Application of a catalytic membrane reactor to the selective hydrogenation of 1-butyne
Publication date: Available online 1 May 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): G. García Colli, J.A. Alves, O.M. Martínez, G.F. BarretoAbstractA catalytic membrane reactor (CMR) was applied in order to enhance the selectivity in the hydrogenation of 1-butyne in the presence of 1-butene. The performance of the CMR was studied in batch-wise operation for the hydrocarbon liquid mixture, while hydrogen was continuously fed to keep a constant partial pressure. The reaction was carried out at 44 °C and partial pressures of hydrogen in the range of 1 to 5&thin...
Source: Chemical Engineering and Processing: Process Intensification - May 2, 2019 Category: Chemistry Source Type: research

Development of a Roadmap for Dynamic Process Intensification by Using a Dynamic, Data-Driven Optimization Approach
Publication date: Available online 1 May 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Seyed Mostafa Safdarnejad, Jake F. Tuttle, Kody M. PowellAbstractThe concept of process intensification involves any improvement in the process or equipment that leads to reduced cost and emissions, increased efficiency, or improved productivity. This paper proposes a novel dynamic process intensification approach that results in similar benefits as the traditional process intensification. The proposed approach utilizes a dynamic optimization approach in improving the operation of a plant. The main c...
Source: Chemical Engineering and Processing: Process Intensification - May 2, 2019 Category: Chemistry Source Type: research

Numerical Investigation of Heat Transfer in Direct Contact Condensation of Steam to Subcooled Water Spray
Publication date: Available online 27 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Hengtao Ding, Yiqing Luo, Xigang YuanAbstractThe direct contact condensation heat transfer (DCCHT) of saturated steam to subcooled water spray produced by a pressure-swirl nozzle was examined by computational fluid dynamics (CFD) in which a two-dimensional (2-D) axisymmetric swirl calculation was performed to simulate the hydraulic characteristics and the temperature profile of the water spray in the sheet region. The CFD simulations were validated by the experimental results obtained in the studi...
Source: Chemical Engineering and Processing: Process Intensification - April 28, 2019 Category: Chemistry Source Type: research

Optimal Liquid Fuel Extractive Desulfurization in Micro and Mini-channels
This study examined the performance of polyethylene glycol 200 (PEG 200) and a mixture synthesized by mixing 1:2 molar ratio of tetrabutyl ammonium bromide salt and polyethylene glycol 200 (PEG200-TBAB) for extraction of thiophene (TS) and dibenzothiophene (DBT) from liquid fuel. The central composite design (CCD) was employed to visualize the interaction effect of different operation factors including channel diameter, channel length, mixing velocity and volume fraction on the extraction of sulfur compounds. It was found that extraction efficiency fluctuates with respect to mixture velocity but the highest removal was obs...
Source: Chemical Engineering and Processing: Process Intensification - April 28, 2019 Category: Chemistry Source Type: research

Dense CO2 technology: Overview of recent applications for drug processing/formulation/delivery
Publication date: Available online 25 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Ravenna L. Matos, Silvio A.B. Vieira de Melo, Elaine C.M. Cabral Albuquerque, Neil R. FosterAbstractDense carbon dioxide technology is promising for the processing of drug compounds and development of varied pharmaceutical formulations through micronization, coprecipitation, encapsulation and coating techniques. The main advantages of this technology are the possibility to process thermo-sensitive compounds at low temperatures and using no/low amounts of organic solvents. Many processes have been ...
Source: Chemical Engineering and Processing: Process Intensification - April 26, 2019 Category: Chemistry Source Type: research

Synthesis of luminescent carbon quantum dots by microplasma process
In this study, a fast and effective method was developed for the synthesis of fluorescent carbon dots by microplasma technology, at atmospheric pressure, using isopropanol as the only reactant. Characterizations of the synthesized carbon dots including the investigation of their structure, morphology and optical properties were performed. The results show that the carbon dots produced have a narrow size distribution (average diameter of 1.78 nm) and are amorphous and graphitic in nature. The photoluminescent study indicates that the carbon dots present an excitation-dependent emission property with the excitation wa...
Source: Chemical Engineering and Processing: Process Intensification - April 26, 2019 Category: Chemistry Source Type: research

Subcritical Water Processing for Nanopharmaceuticals
Publication date: Available online 25 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Yuan Pu, Jie-Xin Wang, Dan Wang, Neil. R. Foster, Jian-Feng ChenAbstractNanonization of poorly water-soluble drugs offers an efficient approach for enhancing the bioavailability of drugs where the solubility and dissolution rate are the main limitations. The solvent anti-solvent precipitation methods have been the most straightforward technique for producing ultrasmall drug nanoparticles with narrow size distributions. By using subcritical water (SBCW) as the solvent, the use of organic solvents c...
Source: Chemical Engineering and Processing: Process Intensification - April 25, 2019 Category: Chemistry Source Type: research

Effect of light phase inlet structure on liquid-liquid cyclone reactor for isobutane alkylation catalyzed by ionic liquid
Publication date: Available online 19 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Shuiqiang Duan, Mengzijing Chen, Rui Zhang, Xianghai Meng, Jian Xu, Wei Du, Zhenbo Wang, Zhichang LiuAbstractThe liquid-liquid cyclone reactor (LLCR) is a new and promising device suitable for the fast reaction and separation for the liquid-liquid system, such as isobutene alkylation catalyzed by acidic ionic liquids. The effect of the number and the width of light phase inlet structures of LLCR on the mixing and separation performance was investigated. The Euler-Euler model and Reynolds Stress Mo...
Source: Chemical Engineering and Processing: Process Intensification - April 20, 2019 Category: Chemistry Source Type: research

Bubble Generation by Micro-Orifices with Application on Activated Sludge Wastewater Treatment
Publication date: Available online 15 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): E. Mohseni, R. Herrmann-Heber, S.F. Reinecke, U. HampelAbstractWe studied the initial gas dispersion performance of diffuser concepts based on micro-orifices and needles with very fine orifice diameters in the range from 37 µm to 225 µm, as such diffusers are currently in discussion for energy-efficient wastewater treatment plants. To evaluate the performance of these micro-orifices, we compared them with industrial rubber membrane diffusers with respect to Sauter mean bu...
Source: Chemical Engineering and Processing: Process Intensification - April 16, 2019 Category: Chemistry Source Type: research

Biodiesel production intensification via microwave irradiation-assisted transesterification of oil blend using nanoparticles from elephant-ear tree pod husk as a base heterogeneous catalyst
This study investigated the potential of a blend of neem-rubber seed oil together with calcined husk of elephant-ear tree pod as catalyst for biodiesel production via transesterification aided with microwave irradiation. The essential process parameters involved in biodiesel production were optimized using central composite rotatable design combined with response surface methodology. The free fatty acid of the blend of neem and rubber seed oils in ratio 60:40 used in this work was effectively reduced from 17.76 to 0.67% using methanol/oil blend ratio of 25:1, catalyst [Fe2(SO4)3] dosage of 10 wt.%, reaction time of ...
Source: Chemical Engineering and Processing: Process Intensification - April 16, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: April 2019Source: Chemical Engineering and Processing - Process Intensification, Volume 138Author(s): (Source: Chemical Engineering and Processing: Process Intensification)
Source: Chemical Engineering and Processing: Process Intensification - April 14, 2019 Category: Chemistry Source Type: research

Process Integration for Simulated Moving Bed Reactor for the Production of Glycol Ether Acetate
Publication date: Available online 13 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Shan Tie, Balamurali Sreedhar, Megan Donaldson, Timothy Frank, Alfred K. Schultz, Andreas Bommarius, Yoshiaki KawajiriAbstractThis work designs and optimizes a simulated moving bed reactor (SMBR) within an overall process that includes two downstream units. The extract and raffinate streams are processed to improve product purity, and recycle streams leaving the downstream units are returned to the SMBR to reduce solvent consumption. Three different operating schemes are evaluated—the standa...
Source: Chemical Engineering and Processing: Process Intensification - April 14, 2019 Category: Chemistry Source Type: research

Experimental investigation on a combined system of vacuum membrane distillation and mechanical vapor recompression
Publication date: Available online 13 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Zetian Si, Dong Han, Yan Song, Junjie Chen, Liantan Luo, Rongyi LiABSTRACTIn order to improve the product quality and reduce the energy consumption for the treatment of strongly corrosive solution, a new combined system of mechanical vapor recompression (MVR) and vacuum membrane distillation (VMD) was developed and constructed in this study, and performance tests were conducted utilizing polytetrafluoroethylene (PTFE) membranes with a pore size of 0.2 um. The effects of process operating parameter...
Source: Chemical Engineering and Processing: Process Intensification - April 13, 2019 Category: Chemistry Source Type: research

A Novel System for Ammonia-Based Sustainable Energy and Agriculture: Concept and Design Optimization
Publication date: Available online 13 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Matthew J. Palys, Anatoliy Kuznetsov, Joel Tallaksen, Michael Reese, Prodromos DaoutidisAbstractThis work presents a new vision for sustainable energy supply and agriculture: an ammonia-based sustainable energy agriculture (ABSEA) system. This intensified system uses renewables to produce ammonia both as fertilizer and as fuel for tractors and grain drying, to meet local electrical power demand and to provide predictable, consistent power export to the grid. The conceptual design of this system ex...
Source: Chemical Engineering and Processing: Process Intensification - April 13, 2019 Category: Chemistry Source Type: research

Model-based performance for gas distribution from perforated manifolds and spargers
Publication date: Available online 11 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Gandhali Kogekar, Robert J. KeeAbstractThe in-situ introduction and mixing of chemical precursors can be a potentially important aspect of process intensification. In this sense, a separate premixing unit process can be eliminated. However, depending on the process, introducing the precursors with spatial uniformity can be important to achieving desired results. The present paper develops a computational model to simulate gas distribution within channel manifolds containing uniformly spaced perfor...
Source: Chemical Engineering and Processing: Process Intensification - April 11, 2019 Category: Chemistry Source Type: research

Process Intensification of Solar Thermal Power Using Hybridization, Flexible Heat Integration, and Real-Time Optimization
Publication date: Available online 9 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Khalid Rashid, Seyed Mostafa Safdarnejad, Kody M. PowellAbstractThis work demonstrates process intensification of a solar thermal and natural gas hybrid power plant. Process intensification is achieved in three novel ways: 1- By synergistically designing the plant, the efficiency at which solar power is collected is dramatically improved. The plant uses a parabolic trough solar collector and combines it with natural gas for steam superheating and auxiliary power. 2- This work introduces the concept...
Source: Chemical Engineering and Processing: Process Intensification - April 10, 2019 Category: Chemistry Source Type: research

Mass Transfer in a Rotating Packed Bed: A Critical Review
Publication date: May 2019Source: Chemical Engineering and Processing - Process Intensification, Volume 139Author(s): Zhihong Wang, Tao Yang, Zhixi Liu, Shicheng Wang, Yang Gao, Mingou WuAbstractProcess intensification in rotating packed bed (RPB) has been demonstrated to be a favorite and spotlight in field of multiphase transportation and reaction. The state of the art in the field of mass transfer has been investigated and proposed. In this review, firstly, highlighted modifications on rotor and distributor are developed and enumerated to inspire the potential on mass transfer. Additionally, various methods are presente...
Source: Chemical Engineering and Processing: Process Intensification - April 7, 2019 Category: Chemistry Source Type: research

Sonocrystallisation: observations, theories and guidelines
Publication date: Available online 4 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Jeroen Jordens, Bjorn Gielen, Christos Xiouras, Mohammed Noorul Hussain, Georgios D. Stefanidis, Leen C.J. Thomassen, Leen Braeken, Tom Van GervenAbstractCrystallization is an important and widely used separation technique in the chemical and pharmaceutical industry. Control of the final particle properties is of great importance for these industries. The application of ultrasound in these crystallization processes, also referred to as sonocrystallization, has shown to impact nucleation, crystal gr...
Source: Chemical Engineering and Processing: Process Intensification - April 5, 2019 Category: Chemistry Source Type: research

Optimization of dual-functional membrane and application for esterification enhancement
Publication date: Available online 3 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Yuewen Li, Li Zhang, Weixing Li, Weihong XingAbstractPoly (styrene sulfonic acid-co-maleic acid) - poly (vinyl alcohol) (PSSA_ MA-PVA) catalytic membrane was prepared by solution casting to enhance esterification of ethanol and acetic acid. The properties of the membranes were characterized by means of thermogravimetry (TGA), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), etc. The pervaporation performance of catalytic membrane was investigated with mixtures of ...
Source: Chemical Engineering and Processing: Process Intensification - April 5, 2019 Category: Chemistry Source Type: research

Rigorous Design and Simultaneous Optimization of Extractive Distillation Systems Considering the Effect of Column Pressures
Publication date: Available online 3 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Chengtian Cui, Jinsheng SunAbstractColumn pressure is one of the most important decision variables in the design and optimization of energy-efficient extractive distillation (ED) as it impacts on phase equilibrium, column temperature, and azeotropic concentration. However, many previous works fixed column pressure heuristically before optimization, resulting in divergence from the global optimum with variable column pressures. This ignorance gives this work the target to simultaneously optimize ED ...
Source: Chemical Engineering and Processing: Process Intensification - April 5, 2019 Category: Chemistry Source Type: research

Electrocoagulation using perforated electrodes: an increase in metalworking fluid removal from wastewater
Publication date: Available online 1 April 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Oriane Avancini Dias, Eduardo Perini Muniz, Paulo Sérgio da Silva PortoAbstractA continuous electrocoagulation reactor with electrode polarity switch was used for removal of a metalworking fluid from synthetic oily water. The effects of perforating the aluminum electrodes, changing the number of holes, flow rate and the distance between electrodes were studied. Higher values of flow rate reduced final pH. Perforating the electrodes led to faster convergence of pH to its maximum value with no...
Source: Chemical Engineering and Processing: Process Intensification - April 2, 2019 Category: Chemistry Source Type: research

A new concept of liquid membranes in Taylor flow: performance for lactic acid removal
Publication date: Available online 31 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Alan D. Pérez, Javier FontalvoAbstractA liquid membrane in Taylor flow regime is a novel alternative kind of contact in three phase flow for liquid membranes that preserves the advantages of conventional emulsion liquid membranes while overcomes the stability problems of emulsion systems. As a proof of concept, this work presents experimental results of a liquid membrane in Taylor flow for lactic acid removal. Several operating conditions, such as injection times, delay times and flow of th...
Source: Chemical Engineering and Processing: Process Intensification - April 2, 2019 Category: Chemistry Source Type: research

Review and analysis of mass transfer process in rotating packed bed
Publication date: Available online 30 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Zhihong Wang, Tao Yang, Zhixi Liu, Shicheng Wang, Yang Gao, Mingou WuAbstractProcess intensification in rotating packed bed (RPB) has been demonstrated to be a favorite and spotlight in field of multiphase transportation and reaction. The state of the art in the field of mass transfer has been investigated and proposed. In this review, firstly, highlighted modifications on rotor and distributor are developed and enumerated to inspire the potential on mass transfer. Additionally, various methods ar...
Source: Chemical Engineering and Processing: Process Intensification - March 31, 2019 Category: Chemistry Source Type: research

Design and Control of Different Pressure Thermally Coupled Reactive Distillation for Synthesis of Isoamyl Acetate
Publication date: Available online 30 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Jun Li, Hao Zhou, Lanyi Sun, Nan ZhangAbstractIn this paper, a steady state model and three control structures of different pressure thermally coupled reactive distillation process for isoamyl acetate synthesis are proposed. The process is firstly designed in Aspen Plus to build a steady state model, economic analysis is then adopted to optimize process parameters. The optimized process shows 39.65% saving on operating cost and 1.25-19.05% saving on TAC with the payback period varies from 5 to 10 ...
Source: Chemical Engineering and Processing: Process Intensification - March 31, 2019 Category: Chemistry Source Type: research

Feasibility evaluation of reactive distillation process for the production of fuel ethanol from methyl acetate hydrotreating
Publication date: Available online 29 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Xin Gao, Shibin Tu, Xingang Li, Hong LiAbstractIn order to seeking further intensification of hydrogenation process during the synthesis of fuel ethanol from methyl acetate (MA), an alternative reactive distillation (RD) with heat integration has been proposed to execute this production. In this paper we develop a mathematical model to describe the behavior and performance of a hydrotreating reactive distillation by considering the amounts of side products and the heat integration. The effect of a...
Source: Chemical Engineering and Processing: Process Intensification - March 30, 2019 Category: Chemistry Source Type: research

Experimental investigation on non-premixed CH4/air combustion in a novel miniature Swiss-roll combustor
Publication date: Available online 28 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Shixuan Wang, Zili Yuan, Aiwu FanAbstractIn the past decades, combustion in miniature Swiss-roll combustors has widely investigated for applications to micro power generation systems. However, all the existing Swiss-roll combustors are designed for premixed combustion mode, in which the flame is prone to flash back or become extinguished at low flow rates. In the present work, a miniature Swiss-roll combustor was designed specifically for non-premixed combustion, which has two inlets for counterfl...
Source: Chemical Engineering and Processing: Process Intensification - March 30, 2019 Category: Chemistry Source Type: research

Experimental study on mass transport mechanism in poly (styrene-co-divinylbenzene) microspheres with hierarchical pore structure
Publication date: Available online 25 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Yongkun Zheng, Qinglian Wang, Chen Yang, Ting QiuABSTRACTCatalyst performance is highly relevant to its mass transport performance. In the present study, seven styrene-co-divinylbenzene polymer samples were synthesized by varying the amounts of crosslinker and porogen, so as to elucidate mass transport mechanism in poly (styrene-co-divinylbenzene) microspheres with hierarchical pore structure. Correspondingly, pore structure parameters of seven samples were characterized by BET and MIP. By choosin...
Source: Chemical Engineering and Processing: Process Intensification - March 27, 2019 Category: Chemistry Source Type: research

Production of hydrogen and syngas using chemical looping technology via cerium-iron mixed oxides
Publication date: Available online 26 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Seyyed Yaghoob Hosseini, Mohammad Reza Khosravi-Nikou, Ahmad ShariatiAbstractChemical looping based on steam reforming of methane was used to co-generate syngas (with H2/CO ratio of 2) and hydrogen without purification processes. Chemical precipitation method was used to prepare CeO2-Fe2O3 combined oxides with different Fe/Ce ratios as the oxygen carriers. The oxygen carriers were tested in the fixed bed micro reactor to investigate the reactivity of the prepared samples in methane conversion (red...
Source: Chemical Engineering and Processing: Process Intensification - March 27, 2019 Category: Chemistry Source Type: research

Editorial Board
Publication date: March 2019Source: Chemical Engineering and Processing - Process Intensification, Volume 137Author(s): (Source: Chemical Engineering and Processing: Process Intensification)
Source: Chemical Engineering and Processing: Process Intensification - March 18, 2019 Category: Chemistry Source Type: research

Scale-up Criteria and Economic Analysis for Supercritical Fluid Extraction of Phyllanthus niruri
Publication date: Available online 15 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Norsyamimi Hassim, Masturah Markom, Masli Irwan Rosli, Shuhaida HarunAbstractThe purpose of this study is to determine the best scale-up criterion of the Supercritical Fluid Extraction (SFE) from Phyllanthus niruri. The modification of solubility determination for Sovová mass transfer model was successfully applied to the overall yield curves of SFE for the plant. Solvent to feed ratio (S/F) was found to be the best scale-up criterion for model verification and economic analysis because it ...
Source: Chemical Engineering and Processing: Process Intensification - March 16, 2019 Category: Chemistry Source Type: research

Improved rate of transesterification reaction in biodiesel synthesis using hydrodynamic cavitating devices of high throat perimeter to flow area ratios
Publication date: Available online 15 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Swapnil Bargole, Suja George, Virendra Kumar SaharanAbstractThe present study reports the process intensification of biodiesel synthesis from waste cooking oil using hydrodynamic cavitation (HC) which was achieved by increasing the ratio of the throat/hole perimeter to flow cross section area (α) (α: 1.33 to 13.33 mm-1) of the cavitating device. Initially, the optimization of process reaction parameters such as oil to alcohol molar ratio (1:6.8) and catalyst concentration (NaOH;...
Source: Chemical Engineering and Processing: Process Intensification - March 16, 2019 Category: Chemistry Source Type: research

Intensification of waste gangue removal from 6–1 mm fine-sized iron ores based on density-based dry vibrated separation and upgrading
Publication date: April 2019Source: Chemical Engineering and Processing - Process Intensification, Volume 138Author(s): Jingfeng He, Lingtao Zhu, Xuezhi Bu, Chengguo Liu, Zhenfu Luo, Yake YaoAbstractDensity-based dry separation with a vibrated fluidized bed was performed to investigate the segregation and separation of 6–1 mm fine-sized iron ore through the removal intensification of waste gangue. The 6–3 mm and 3–1 mm iron ore samples were a typical hematite with total Fe-grades of 46.5% and 46.2%, respectively. The effects of static bed height (Hs), vibration amplitude (A), and freq...
Source: Chemical Engineering and Processing: Process Intensification - March 15, 2019 Category: Chemistry Source Type: research

Pomegranate peel and orange juice by-product as new biosorbents of phenolic compounds from olive mill wastewaters
Publication date: Available online 12 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Maria Ververi, Athanasia M. GoulaAbstractSeveral wastes and residues have been studied for the adsorption of phenolic compounds with varying success. However, new economical, easily available, and highly effective adsorbents are still needed. The purpose of this work is to consider the potential of two food wastes derived from agricultural activities, the non-modified pomegranate peel and orange juice by-product, after the removal of their own phenolic content, for phenolics sorption from olive mi...
Source: Chemical Engineering and Processing: Process Intensification - March 13, 2019 Category: Chemistry Source Type: research

Control of Compression Refrigeration Processes with Superheat or Saturated Boiling
Publication date: Available online 11 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): William L. LuybenAbstractCryogenic separation processes typically use compression refrigeration systems to achieve the desired low temperature levels for heat removal in the condenser. Many compression refrigeration systems are designed to produce slightly superheated refrigerant vapor leaving the evaporator. The liquid expansion valve is manipulated to control the amount of superheating. Commercial refrigeration systems must often handle drastic changes in operating conditions of refrigerant load...
Source: Chemical Engineering and Processing: Process Intensification - March 12, 2019 Category: Chemistry Source Type: research

Process Intensification of Stirred Pulp-mixing in Flotation
Publication date: Available online 11 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Zhen Li, Chengqian Zhao, Huaiqing Zhang, Jiongtian Liu, Chao Yang, Shanxin XiongABSTRACTWith the increasing demands for the high efficiency of pulp-mixing, which is adapted to the fine particles entering into flotation section, an intensification pulp-mixing device with novel design has been developed. On the basis of numerical simulation, which indicated efficient circulation and shear effect of the “maleic-cutting” configuration equipped with static-guide-blade, the power dissipation...
Source: Chemical Engineering and Processing: Process Intensification - March 12, 2019 Category: Chemistry Source Type: research

Effects of coexisting substances on aniline degradation with ozone-based advanced oxidation process in high-gravity fields
Publication date: Available online 11 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Weizhou Jiao, Jingjuan Qiao, Yuejiao Qin, Youzhi LiuAbstractEffects of common coexisting substances in industrial wastewater on the removal of total organic carbon (TOC) by O3/Fe(II) and O3/Fenton systems in rotating packed bed (RPB) were investigated. The results show that for the RPB-O3/Fe(II) system, Na3PO4 and NaNO3 act as a promoter for the removal of TOC in aniline-containing wastewater; NaOH, Na2CO3, NaNO2, NaCl and NaHCO3 act as an inhibitor for the removal of TOC. For the RPB-O3/Fenton sy...
Source: Chemical Engineering and Processing: Process Intensification - March 12, 2019 Category: Chemistry Source Type: research

DRYING DYNAMICS OF MICROALGAE (Chlorella pyrenoidosa) DISPERSION DROPLETS
Publication date: Available online 11 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Ana Paula Biz, Lúcio Cardozo-Filho, Everton Fernando ZanoeloAbstractSpray drying of microalgae is believed to reduce the high cost of energy, and the low yield of extraction that typically make it prohibitive to produce commercially lipids from microalgae. In this framework, the primary aim of this study was to investigate the drying kinetics of droplets that mimic the ones formed during spray drying of microalgae dispersions. Drying of a set of one hundred, equal in size droplets of distil...
Source: Chemical Engineering and Processing: Process Intensification - March 12, 2019 Category: Chemistry Source Type: research

Structure improvements and performance study of Supersonic Separation device with reflux channel
Publication date: Available online 11 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Cheng Ma, Yingguang Wang, Yang Yu, Wenwen Ren, Dapeng HuAbstractA new supersonic separator with reflux channel has been proposed to obtain better refrigeration and separation performance. However, the specific structure of the new separator has not been reported so far. Moreover, the length of the conical drainage structure is too short to allow sufficient time to discharge the condensate. Therefore, in the paper, a new hybrid two-stage drainage structure is designed by adding additional side drai...
Source: Chemical Engineering and Processing: Process Intensification - March 12, 2019 Category: Chemistry Source Type: research

The selection and mechanism of composite solvent containing ionic liquid in liquid-liquid microextraction Process
Publication date: Available online 8 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Jing Fang, Yihan Li, Tingting Li, Chunli LiAbstractThe composite solvent containing ionic liquid is applied in dispersive liquid–liquid microextraction (DLLME) to improve its performance. The solvents are screened by COSMO-SAC method and density functional theory (DFT) is used to verify the reliability of COSMO-SAC. At the same time, DFT is also used to prove the superiority and study the mechanism of the composite solvent. The feasibility of molecular design, the optimized composite ratio an...
Source: Chemical Engineering and Processing: Process Intensification - March 9, 2019 Category: Chemistry Source Type: research

Preparation of Polypyrrole/Chitosan/Carbon Nanotube Composite Nano-electrode and Application to Capacitive Deionization Process for removing Cu2+
Publication date: Available online 8 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Yu-Jie Zhang, Juan-Qin Xue, Fei Li, JI-Zhe Dai, Xuan-Zhuo-Yi ZhangAbstractCapacity deionization technology, an innovative desalination technology, is applied to removing heavy metal ions. As a new pseudo-capacitance electrode material, polypyrrole (PPy) is considered as a promising and perfect electrode material of CDI. In this paper, polypyrrole/chitosan/carbon nanotubes (PPy/CS/CNT) composite nano-electrode were prepared by in situ polymerization, and its surface characteristics, electrochemical ...
Source: Chemical Engineering and Processing: Process Intensification - March 9, 2019 Category: Chemistry Source Type: research

Intensification of waste gangue removal from 6−1 mm fine-sized iron ores based on density-based dry vibrated separation and upgrading
Publication date: Available online 6 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Jingfeng He, Lingtao Zhu, Xuezhi Bu, Chengguo Liu, Zhenfu Luo, Yake YaoAbstractDensity-based dry separation with a vibrated fluidized bed was performed to investigate the segregation and separation of 6 − 1 mm fine-sized iron ore through the removal intensification of waste gangue. The 6 − 3 mm and 3 − 1 mm iron ore samples were a typical hematite with total Fe-grades of 46.5% and 46.2%, respectively. The effects of st...
Source: Chemical Engineering and Processing: Process Intensification - March 8, 2019 Category: Chemistry Source Type: research

Synthesis of 5-Hydroxymethylfurfural (5-HMF) from Fructose over Cation Exchange Resin in a Continuous Flow reactor
Publication date: Available online 5 March 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Chaloemkrit Sonsiam, Amaraporn Kaewchada, Supakrit pumrod, Attasak JareeAbstractA continuous packed-bed reactor was applied for the synthesis of 5-HMF via dehydration of fructose. Cation exchange rasin functionalized with sulfonic acid groups; -HSO3 was used as catalyst. 1-methyl-2-pyrrolidinone (NMP) was used as aqueous solvent to partially substitute water. A biphasic system with methyl isobutyl ketone (MIBK) as organic solvent was applied to enhance the transfer of 5-HMF from aqueous phase. Effe...
Source: Chemical Engineering and Processing: Process Intensification - March 6, 2019 Category: Chemistry Source Type: research

Ethylene/ethane absorption with AgNO3 solutions in ultrasonic microreactors
In this study, characteristics of chemical absorption of C2H4 from the mixture of C2H6/C2H4 into AgNO3 solutions under Taylor flow are investigated in a high-power ultrasonic microreactor. The effect of ultrasound on the bubble size reduction, absorption and mass transfer coefficient is presented and discussed. It is demonstrated that very large mass transfer coefficient with kLa and kL in the range of 7-42 s-1 and 0.00169-0.0225 m·s-1 respectively are obtained, presenting significant intensification compared to absorption without ultrasound in the same reactor.Graphical abstract (Source: Chemical Engineering...
Source: Chemical Engineering and Processing: Process Intensification - March 1, 2019 Category: Chemistry Source Type: research

Heat and water recovery from flue gas: application of micro-porous ceramic membrane tube bundles in gas-fired power plant
In this study, the water and heat-recovery performance of 2 μm HWTMC on a gas-fired power plant was studied theoretically and experimentally. The simultaneous drop-wise/film-wise condensation heat transfer process was proposed in this study, and we investigated them by installing several temperature sensors within the HWTMC. In addition, the heat and water-recovery performance of HWTMC was evaluated respectively under different operational conditions, and the velocity loss of flue gas was also measured to verify its practicability. The experimental results showed that flue gas temperatures change significantly in...
Source: Chemical Engineering and Processing: Process Intensification - March 1, 2019 Category: Chemistry Source Type: research

Implementation and long term experiences with a continuous hygienisation process in food industry – A case study
Publication date: March 2019Source: Chemical Engineering and Processing - Process Intensification, Volume 137Author(s): D. Wöss, M. Ortner, J. Mensik, R. Kirchmayr, A. Schumergruber, T. PröllAbstractA three tonne/hour batch-type hygienisation process for animal waste was replaced by a fully continuous process including heat integration. The plant is embedded into a pig abattoir including an anaerobic digestion (biogas) plant and gas-engine-based combined heat and power (CHP) production. Pre-heating is done in a series of four tube bundle apparatuses with heat transferred from the hot treated animal waste leaving ...
Source: Chemical Engineering and Processing: Process Intensification - March 1, 2019 Category: Chemistry Source Type: research

The RAPID Manufacturing Institute – Reenergizing US Efforts in Process Intensification and Modular Chemical Processing
Publication date: Available online 27 February 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): James Bielenberg, Ignasi Palou-RiveraGraphical abstract (Source: Chemical Engineering and Processing: Process Intensification)
Source: Chemical Engineering and Processing: Process Intensification - February 28, 2019 Category: Chemistry Source Type: research

A conceptual investigation for the simultaneous production of gasoline and ammonia in thermally coupled reactors
Publication date: Available online 27 February 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Mahdi Shakeri, Davood Iranshah, Abbas NaderifarAbstractIn recent years, there have been many efforts to improve the catalytic naphtha reforming, due to the importance of this process in the industry. In this research, simultaneous production of gasoline and ammonia in the thermally coupled reactor is studied theoretically. It is considered that the naphtha reforming process as the endothermic reaction takes place in the shell side of the reactor and ammonia synthesis process as the exothermic r...
Source: Chemical Engineering and Processing: Process Intensification - February 28, 2019 Category: Chemistry Source Type: research

Sonochemical Enzymatic Esterification of Oleic Acid and Tri-Ethanolamine for a Fabric Softener in Textile Application
Publication date: Available online 28 February 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Archana S. Bansode, Dipak D. Pukale, Nilesh L. Jadhav, Usha Sayed, Dipak V. PinjariAbstractThe present study deals with the ultrasound-assisted enzymatic synthesis of diester from oleic acid and triethanolamine (TEA) for the preparation of esterquat. The effect of reaction conditions such as sonication time, reaction temperature, sonication power, enzyme loading on the % of esterification has been investigated. Acid value analysis was used to check the progress of the reaction. The formed produ...
Source: Chemical Engineering and Processing: Process Intensification - February 28, 2019 Category: Chemistry Source Type: research

Evaluation of lipid extraction from microalgae based on different phase regions of CO2-expanded ethanol
This study revealed the necessity of the consideration of key factors such as phase equilibrium during employing CXE for the extraction of oxidizable or thermolabile products.Graphical abstract (Source: Chemical Engineering and Processing: Process Intensification)
Source: Chemical Engineering and Processing: Process Intensification - February 26, 2019 Category: Chemistry Source Type: research

SiC foam based structured catalyst for process intensification in oxidative dehydrogenation of 1-butene to butadiene
Publication date: Available online 25 February 2019Source: Chemical Engineering and Processing - Process IntensificationAuthor(s): Renzheng Jiang, Yilai Jiao, Yingpeng Xie, Zhenming Yang, Jinsong ZhangAbstractOxidative dehydrogenation of butenes to butadiene is a highly exothermic and diffusion-controlled reaction. The problems of high adiabatic temperature rise and pressure drop, low gas velocity and conversion, as well as high consumption of water exist in the conventional reactors. In order to ease these problems, SiC foam supporting ZnFe2O4-α-Fe2O3 (ZnFe2O4-α-Fe2O3/SiC foam) structured catalyst was prepared...
Source: Chemical Engineering and Processing: Process Intensification - February 25, 2019 Category: Chemistry Source Type: research