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中国化学工程学报（英文版）
中国化学工程学报（英文版）

廖叶华

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1004-9541

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010-64980783

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中国化学工程学报（英文版）/Journal Chinese Journal of Chemical EngineeringCSCDCSTPCD北大核心EISCI
查看更多>>The Chinese Journal of Chemical Engineering (Bimonthly, started in 1982) is the official journal of the Chemical Industry and Engineering Society of China and published by the Chemical Industry Press. The aim of the journal is to develop the international exchange of scientific and technical information in the field of chemical engineering. It publishes original research papers that cover the major advancements and achievements in chemical engineering in China as well as some articles from overseas contributors. The topics of journal include chemical engineering, chemical technology, biochemical engineering, energy and environmental engineering and other relevant fields. Papers are published on the basis of their relevance to theoretical research, practical application or potential uses in the industry as Research Papers, Research Notes, Chemical Engineering Data and Reviews. Prominent domestic and overseas chemical experts and scholars have been invited to form an International Advisory Board and the Editorial Committee. It enjoys recognition among Chinese academia and industry as a reliable source of information of what is going on in chemical engineering research, both domestic and abroad.
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    The robust design of PMIA braided tube reinforced PFA hollow fiber membranes with graphene doping for water-in-oil separation

    Wei ZhaoXin JinKaikai ChenHaoyang Ling...
    105-117页
    查看更多>>摘要：In order to solve the problem of oily wastewater,the poly(m-phenyleneisophthalamide)(PMIA)braided tube reinforced(PBR)poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether)(PFA)hollow fiber membrane with thermal and solvent resistant property was prepared via no-solvent green method.The membrane surface and pore structure was optimized by changing the sintering temperature and gra-phene(GE)content.The morphologies showed that the spherical surface with good lipophilicity was formed,and the excellent mechanical strength with a favorable interface bonding state could be obtained due to the PFA melts permeating into the supporting layer.The doping of GE produced synergistic effects with the sintering temperature owing to its good thermal conductivity and pore formation.The PBR-PFA/GE hollow fiber membrane exhibited good hydrophobicity and lipophilicity with more than 97％sepa-ration efficiency for different oil products at-0.02 MPa.With the addition of GE,the average pore size first increases and then decreases,and the porosity gradually decreases.In addition,the hollow fiber membrane showed high separation ability to the water-in-oil emulsion,and maintained a stable flux recovery rate after recycling,making it possible to apply in the field of oily wastewater treatment.
      原文链接:
    • 万方数据
    • 维普

    Continuous monitoring of residual water content in boiling water-hydrocarbon emulsions during thermomechanical dehydration

    A.SafiulinaS.KhusnutdinovI.KhusnutdinovI.Goncharova...
    118-123页
    查看更多>>摘要：Significant waste resources are generated in the form of water-oil emulsions.These emulsions cannot be effectively destroyed on an industrial scale by traditional methods that rely on the settling of the aqueous phase,and therefore,they accumulate in large quantities.Thermomechanical dehydration,based on the evaporation of the water phase,presents a promising process for recycling such waste.However,within the framework of thermomechanical dehydration,the issue of optimizing energy costs for heating raw materials and controlling the water content in the product arises.Standard methods of determining water content under the boiling conditions of highly stable water-hydrocarbon emulsions are charac-terized by low efficiency,as they require constant sampling and the involvement of additional equipment and personnel.Consequently,this presents a challenge in predicting and creating an automated ther-momechanical dehydration process.Therefore,dynamic curves depicting changes in the water content of these emulsions,depending on the temperature of the boiling liquid,have been obtained.It is proposed to determine the rate of temperature increase(dT/dt)of the boiling emulsion for continuous,real-time monitoring of the residual water content and for recording the moment of complete dehydration.Achieving a boiling emulsion temperature of 130-170℃(or higher)and/or the rate of temperature increase from 3.0 to 5.5(or above)indicates the complete dehydration of the emulsion.The proposed method can be implemented in any industrial or laboratory-scale unit for thermomechanical dehydra-tion without significant capital costs.It is based on the use of simple devices consisting of temperature sensors and a computing unit for determining the temperature and rate of heating.
      原文链接:
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    Structural parameters and molecular model of Shendong subbituminous coal

    Xiaoping SuNing LiLongjian LiReyila Tuerhong...
    124-134页
    查看更多>>摘要：Coal has a highly complex chemical structure,similar to polymers,coal is a macromolecular structure composed of a large number of"similar compounds",which is called the basic structural unit.Under-standing coal structure is the basis of its transformation and utilization.Shendong(SD)coal was analyzed by FTIR,XRD,XPS,and NMR.The results show that SD coal normalized structure formula is C100H68.5O35.7N1.2S0.2 and the average number of aromatic rings is 1.98.-CH2-content accounts for about 82％in aliphatic C-H region,and the ratio of ether bond C-O,aromatic ether C-O and C=O is about 2∶1∶11 in oxygen-containing functional group region.The d002,Lc,La and Nc of SD coal micro-crystalline structure parameters are 0.1832 nm,1.4688 nm,2.0852 nm and 9.017,respectively.Aromatic carbon and aliphatic carbon ratios of SD coal are 55.67％and 29.97％,aromatic cluster size and average methylene chain length are 0.224 and 1.817.Based on these structural parameters,molecular model of SD coal was constructed with 13C SSNMR experimental spectra as a reference.The model was constructed with an atom composition of C214H214O49N2S.
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    • 维普

    Effect of introducing oxygen into ethylene tar pitches on their carbonaceous products

    Rongqi ChenYongzheng ZhangYanli WangChunyin Shen...
    135-146页
    查看更多>>摘要：Ethylene tar is a prospective precursor for preparing carbonaceous materials,which is regarded as a representative soft carbon material after carbonization.However,the introduction of oxygen can influ-ence the morphology of the final carbonaceous materials.For the introduction of oxygen,dealkylation and dehydrogenation will be promoted and the molecules can be linked more effectively.For the sub-sequent carbonization,the biphenyl structures caused by the deoxygenation via the elimination of CO2,as well as the reserved aromatic ether bonds,can facilitate the strong cross-linking,which will restrain the movement of the carbon layers and the formation of the graphitic structures.After the graphitization treatment at 2800℃,the oxidized pitch can lead to short-range ordered and long-range unordered structures,while the sample without oxidation can result in long-range ordered graphitic structures.It can be proved that a simple oxidation-carbonization treatment can transform ethylene tar into hard carbon structures.
      原文链接:
    • 万方数据
    • 维普

    A general pressure drop model based on liquid holdup of gas-liquid flow in micro-packed beds

    Junjie WangLin ShengJiang DengGuangsheng Luo...
    147-156页
    查看更多>>摘要：The understanding of the gas-liquid flow characteristics in a micro-packed bed reactor is still immature,especially for many gas-organic working systems commonly used in industry.Accordingly,this study proposes a platform to investigate the gas-liquid flow characteristics in a micro-packed bed reactor and presents a unified expression for these characteristics of both organic and aqueous liquid phase.The influence of two-phase flow rate,working solution viscosity,and packing particle size on the liquid holdup and pressure drop were studied.The gas-organic working systems results show that the liquid holdup ranges between 0.5 and 0.8 and pressure drop ranges from 50 to 350 kPa·m-1.In particular,a strong correlation between the two flow characteristics parameters(liquid holdup and pressure drop)was proposed for the first time.Finally,a general pressure drop mathematical prediction model in micro-packed bed were developed.
      原文链接:
    • 万方数据

    Recent study on hydrophilization of polyvinylidene fluoride membrane for oily-wastewater treatment

    Nita AryantiAininu NafiunisaTutuk Djoko Kusworo
    157-186页
    查看更多>>摘要：Polyvinylidene fluoride(PVDF)polymer-based membranes are extensively used in wastewater treat-ment,yet their partially hydrophobic nature poses significant challenges.Numerous studies have focused on creating super-wetting membranes to enhance the water affinity of PVDF membranes.This review provides a comprehensive discussion on the hydrophilization of PVDF-based membranes,examining the chemical and physical properties that influence water affinity.Followed by various fabrication tech-niques,appropriate modifier materials,efficient operational conditions,and recent advancements in hydrophilization methods.Additionally,the review systematically evaluates the performance of these hydrophilized membranes in separating surfactant-stabilized oil-in-water emulsions,highlighting the importance of long-term stability and environmental considerations.The antifouling mechanisms and the effectiveness of hydrophilic membranes in oil-water separation processes are also discussed,of-fering insights into the development and application of these technologies.The discussion explain in this review provides important information for the research of wastewater treatment,green material and green industry.
      原文链接:
    • 万方数据
    • 维普

    On the enhanced properties of composite asphalt via adding surface modified calcium sulfate whisker-SBR

    Aoqi CuiEmmerson HondoNur Fatihah Tajul ArifinYanpeng Pei...
    187-200页
    查看更多>>摘要：With the aim of improving the durability and safety,erosion time,and cost-effective of asphalt road,a composite of modified calcium sulfate whisker-styrene butadiene rubber modified asphalt(MCSW-SBRMA)was prepared via thermal doping.Firstly,stearic acid and titanate coupling agent(NDZ-201)were used as a modifier to transform calcium sulfate whisker(CSW)into MCSW via wet modification method at 60℃ and anhydrous ethanol as a dispersant.What is more,the optimum loading of modifier(a mixture of 25％stearic acid+75％NDZ-201)was found to be at 2％to prepare MCSW.Subsequently,a composite of MCSW-SBRMA was prepared with different loading of MCSW(i.e.2％to 8％)to enhance the softening point of asphalt.In this study,it was found that 4％of modifiers was the best composition to improve the MCSW-SBRMA properties as elucidated in the orthogonal experiment table L16(42).The effects of MCSW and SBR addition on several properties of asphalt were studied by multiple routine tests including penetration,segregation test,and so on.The results show that:2％to 8％MCSW can increase the softening point of SBR modified asphalt(SBRMA)by 7％to 8％.4％MCSW increased the PG of SBRMA from 64 to 70,which greatly improved the high temperature characteristics of asphalt.The 5℃ ductility of MCSW-SBRMA is greater than 100 cm,which greatly improves the low temperature performance of asphalt.Through the application of fluorescence microscopy(FM),Fourier transform infrared spectros-copy(FTIR),Scanning electron microscopy(SEM),and energy dispersive spectroscopy(SEM-EDS),it has been demonstrated that MCSW-SBR effectively alters asphalt in a highly uniform manner,with some MCSW still retaining large cross sections,thereby facilitating the dispersion of shear stress and enhancing the durability of asphalt.
      原文链接:
    • 万方数据
    • 维普

    NiMo-MMO catalyst derived from LDHs precursors toward the deep hydrogenation of pyrene

    Yongliang JiaBoyang BaiJing WangYueyi Wang...
    201-210页
    查看更多>>摘要：A series of Ni-based catalysts were prepared via structural topological transformation from the Ni@Al2O3 layered double hydroxides(LDHs)precursors,and applied for the deep catalytic hydrogenation satura-tion of pyrene in a high-pressure reactor.The pore structures,active species dispersion,surface morphology,amount and type of acid of the prepared catalysts were characterized by BET,XRD,SEM,TEM,XPS,SEM,NH3-TPD and Py-IR.We studied the influence of physicochemical properties of Ni-based catalysts on the regularity and mechanism of deep hydrogenation of pyrene.Meanwhile,the synergy between Ni and Mo,and the interaction between active metals and support were discussed to further reveal the constitutive relationship during the hydrogenation reaction of pyrene.The results of the evaluation of the catalytic hydrogenation of pyrene show that the as-prepared NiMo mixed metal oxide(MMO)catalyst showed excellent catalytic activity:～95％pyrene conversion,90.12％for the selectivity of deep hydrogenation products(hexahydropyrene,decahydropyrene and hexadecahydropyrene).It was expected that the successfully preparation and utilization of NiMo-MMO catalyst could provide a theoretical basis for the design of this kind of catalysts for deep catalytic hydrogenation of polycyclic aromatic hydrocarbons(PAHs).
      原文链接:
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    Rigorous design and economic optimization of reactive distillation column considering real liquid hold-up and hydraulic conditions of industrial device

    Yuchang DuYiqing LuoPeilin YangShengkun Jia...
    211-226页
    查看更多>>摘要：The liquid hold-up in a reactive distillation(RD)column not only has a significant impact on the extent of reactions,but also affects the pressure drop and hydraulic conditions in the column.Therefore,the liquid hold-up would be a critical design factor for RD columns.However,the existing design methods for RD columns typically neglect the influence of considerable amount of liquid hold-up in downcomers owing to the difficulties of solving a large-scale nonlinear model system by considering downcomer hydraulics,resulting in significant deviations from actual situation and even operation infeasibility of the designed column.In this paper,a pseudo-transient(PT)RD model based on equilibrium model considering tray hydraulics was established for rigorous simulation and optimization of RD plate columns considering the liquid hold-up both in downcomers and column trays,and a steady-state optimization algorithm assisted by the PT model was adopted to robustly solve the optimization problem.The optimization results of either ethylene glycol RD or methyl acetate RD demonstrated that assuming all the liquid hold-up of a stage belonged to the tray will cause significant deviations in the column diameter,weir height,and the number of stages,which leads to not meeting the separation requirements and even operation hydraulic infeasibility.The rigorous model proposed in this study which considers the liquid hold-up both on trays and in downcomers as well as hydraulic constraints can be applied to systematically design industrial RD plate columns to simultaneously obtain optimal operating variables and equipment structure variables.
      原文链接:
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    A model free adaptive control method based on self-adjusting PID algorithm in pH neutralization process

    Kang LiuYou FanJuan Chen
    227-236页
    查看更多>>摘要：In this paper,a new model free adaptive control method based on self-adjusting PID algorithm(MFAC-SA-PID)is proposed to solve the problem that the pH process with strong nonlinearity is difficult to control near the neutralization point.The MFAC-SA-PID method also solves the problem that the pa-rameters of the model free adaptive control(MFAC)method are not easy to be adjusted and the effect is not obvious by introducing a fuzzy self-adjusting algorithm to adjust the controller parameters.Then the convergence and stability of the MFAC-SA-PID method are proved in this paper.In the simulation study,the control performance of the MFAC-SA-PID method proposed in this paper is compared with the traditional MFAC method and the improved model free adaptive control(IMFAC)method,respectively.The results show that the proposed MFAC-SA-PID method has better control effect on the pH neutrali-zation process.The MFAC-SA-PID control performance also outperforms the traditional MFAC method and IMFAC method when step input disturbances are added,which indicates that the MFAC-SA-PID method has better robustness and stability.
      原文链接:
    • 万方数据
    • 维普