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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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北京东城区青年湖南街13号

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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    Physicochemical properties of lard oil and rubber seed oil blends and their comprehensive characterization

    Amonrat ThangthongWuttichai RoschatPhongsakorn PholsuphoAekkaphon Thammayod...
    1-13页
    查看更多>>摘要：This research investigates the potential of blending complementary lard oil with rubber seed oil as feed-stock for biodiesel production.Rubber seed oil,obtained through hexane extraction using the Soxhlet method,contains the major fatty acids of oleic acid(C18∶1),palmitic acid(C16∶0),linoleic acid(C18∶2),and stearic acid(C18∶0),while rubber seed oil primarily consists of linoleic acid(C18∶2),oleic acid(C18∶1),linolenic acid(C18∶3),palmitic acid(C16∶0),and stearic acid(C18∶0).The least acid value of lard oil(0.55 mg KOH/g)can benefit of reducing soap formation of rubber seed oil during transesterification process in biodiesel pro-duction due to its substantial-high acid value(16.28 mg KOH/g).Blending at ratios below 80:20 volume ratio produced biodiesel exceeding 85％,utilizing CaO as a catalyst.Lard oil demonstrated a higher reaction rate constant(11.88 × 10-3 min-1)than rubber seed oil(2.11 × 10-3 min-1),indicating a significant dif-ference in performance.High acid value and free fatty acids in rubber seed oil correlated with lower re-action rates.Maintaining a mixture ratio below 80:20 volume ratio optimized reaction rates during biodiesel production.Biodiesel obtained from blends below 80∶20 volume ratio met ASTM D6751 and EN 14214 standards,demonstrating suitability for bio-auto fuel.The drawbacks of using rubber seed oil as a raw material for biodiesel production are overcome by blending with lard oil,giving rise to expanding renewable energy options for rural communities,community enterprises,and large-scale biodiesel production.
      原文链接:
    • 万方数据
    • 维普

    Green leaching and predictive model for copper recovery from waste smelting slag with choline chloride-based deep eutectic solvent

    Mehmet Ali TopçuSeyit Alperen ÇeltekAydin Rüşen
    14-24页
    查看更多>>摘要：This research was performed to investigate the optimization of copper recovery from copper smelting slag(CSS)with a deep eutectic solvent as a green reagent.The effect of important parameters on the leaching efficiency of copper and zinc(as well as dissolution of iron),such as leaching time,leaching temperature,solid/liquid ratio,and particle size was studied.In order to model the copper recovery,an optimization method was used.According to the chemical analysis of CSS,the slag contains 0.9％copper,3.3％zinc,and 36.7％iron.Also,it was found that the CSS is mainly composed of Fe2SiO4,Fe3O4 and SiO2.Copper-containing structures were determined as CuO and CuS.As a result of leaching experiments,80％copper and 61％zinc recoveries were obtained at 48 h,95 ℃,1/25 g·ml-1,and-33 μm.It is noted that the iron and silicon dissolution remained negligible under the selected conditions.According to the math-ematical model,the highest copper leaching efficiency(up to 100％)could be under optimum working conditions as 48.5 ℃ leaching temperature,40.1 h leaching duration,and 62.3 ml·g-1 solid/liquid ratio.Also,the proposed model revealed that a wide range of experimental levels can be used as leaching parameter to get desired metal leaching efficiency.
      原文链接:
    • 万方数据
    • 维普

    Investigation on the synthesis conditions of poly(4-methyl-1-pentene)hollow fiber membrane with high gas permeability and strong tensile strength

    Changfeng LuDonghai ShengLin ZhangBeibei Feng...
    25-34页
    查看更多>>摘要：Poly(4-methyl-1-pentene)hollow fiber membranes(PMP HFMs)are commonly used in gas separation membrane and artificial lung membrane in extracorporeal membrane oxygenation(ECMO),and its porous structure and mechanical properties have a significant impact on the performance of the membrane material.In our work,PMP HFMs were prepared by thermally induced phase separation method.Subsequently,through characterization analysis of powder X-ray diffraction,universal tensile machine,scanning electron microscope and other instruments,the effects of PMP concentration,diluent ratio,quenching temperature,air gap distance and winding speed on the membrane performance were systematically investigated to obtain optimal preparation conditions for PMP HFMs.The results showed that the PMP HFMs prepared under optimal conditions possessed good gas permeability with a nitrogen flux of 10.5 ml·MPa-1·cm-2 min-1,a surface dense layer,and a good tensile strength of 9.33 MPa.We believed that this work could provide useful references for the application of PMP membranes in the medical field.
      原文链接:
    • 万方数据
    • 维普

    A stepwise optimization method for topology structure of fluid machinery network

    Wei GaoXuliang JingJing ChenHongxiong Li...
    35-45页
    查看更多>>摘要：The circulating water system is widely used as the cooling system in the process industry,which has the characteristics of high water and power consumption,and its energy consumption level has an important impact on the economic performance of the whole system.Pump network and water turbine network constitute the work network of the circulating water system,that is,the fluid machinery network.Based on the previous studies,this paper proposes a stepwise method to optimize the fluid machinery network,that is,to optimize the network structure by using the recoverable pressure-head curve of the branch,and consider the recovery of adjustable resistance at the valve of each branch,so as to further reduce energy consumption and water consumption.The calculation result of the case shows that the topology structure optimization can further reduce the operation cost and the annual capital cost on the basis of the fixed structure optimization,and the total annualized cost can be reduced by 30.04％.The optimi-zation result of different flow shows that both the pump network and the water turbine network tend to series structure at a low flow rate whereas to parallel structure at a high flow rate.
      原文链接:
    • 万方数据
    • 维普

    Beneficial synergetic effect of feedstock characteristics and reaction conditions on bio crude production from hydrothermal liquefaction of mixed residential waste

    Vaishnavi MahadevanSathishkumar KannaiyanGopinath Kannappan Panchamoorthy
    46-61页
    查看更多>>摘要：Hydrothermal liquefaction(HTL)is a promising method for sustainable waste management and renewable energy production,converting mixed feedstocks into bio-crude,a precursor to various bio-fuels.A study focused on mixed residential waste(MRW)as an HTL feedstock investigated temperature ranges(280-360 ℃)and residence times(30-90 min),achieving a maximum bio-crude yield of 39.16％at 340 ℃ and 75 min.Also,a thorough investigation of the synergistic relationships between all sub-components of the MRW feedstock was conducted and concluded that the mixed waste(MW)feedstock samples containing a higher proportion of food and plastic wastes and MRW sample presented with a co-liquefaction percentage(CE)of around 60％and 107％respectively for production of bio crude.Also,solvents such as ethanol,glycerol and aqueous phase(AQ)were tested for their potential as hydro-thermal mediums and found that bio crude yield of 46.19％was obtained in case of AQ phase recircu-lation.Further,the quantitative and qualitative effect of usage of four different catalysts were tested individually and in combination with AQ phase recirculation and found that,although individually nanoporous ZnO and diatomaceous earth(DE)yielded bio crude in the range of 46.86％and 42.68％respectively,when used in combination,DE cat-HTL with AQ resulted in maximum bio crude yield of 54.35％.Furthermore,qualitatively,the bio crude from DE cat-HTL with AQ presented with a high carbon and energy recovery percentage of 62.20％and 72.95％respectively and a high hydrocarbon content of 58.98％.
      原文链接:
    • 万方数据
    • 维普

    Synthesis of flexible inter-plant heat exchanger networks:A decomposition method considering intermedium fluid circles

    Ran TaoSiwen GuLinlin LiuJian Du...
    62-73页
    查看更多>>摘要：The traditional methods for synthesizing flexible heat exchanger networks(HENs)are not directly applicable to inter-plant HEN challenges,primarily due to the spread of system uncertainty across plants via intermedium fluid circles.This complicates the synthesis process significantly.To tackle this issue,this study proposes a decomposed stepwise methodology to facilitate the flexible synthesis of the inter-plant HENs performing indirect heat integration.A decomposition strategy is proposed to divide the overall network into manageable sub-networks by dissecting the intermedium fluid circles.To address the variability in intermedium fluid temperatures,a temperature fluctuation analysis approach is developed and a heuristic rule is introduced to maintain the temperature feasibility of the intermedium fluids.To ensure adequate flexibility and cost-effectiveness of the designed networks,flexibility analysis and network retrofit steps are conducted through model-based optimization techniques.The efficacy of the method is demonstrated through two case studies,showing its potential in achieving the desired operational flexibility for inter-plant HENs.
      原文链接:
    • 万方数据
    • 维普

    Enhanced electrochemical nitrate removal from groundwater by simply calcined Ti nanopores with modified surface characters

    Yuan MengWanli TanShuang LvFang Liu...
    74-85页
    查看更多>>摘要：A simple and convenient preparation method with high catalytic reduction activity is crucial for the remediation of nitrate contamination.In this study,the innovation for fabricating a nanoelectrode was developed by calcinating the anodized plate to alter the surface crystalline phase of the material.The prepared calcined Ti nanopores(TNPs)electrode could effectively remove up to 95.1％nitrate from simulated groundwater at 30 mA·cm-2 electrolysis for 90 min,while under the same conditions,the removal efficiency of nanoelectrode prepared by conventional methods was merely 52.5％.Scanning electron microscopy images indicated that the calcined TNP nanoelectrode was porous with different pore sizes.The higher nitrate removal efficiency of TNPs-500(95.1％)than TNPs-400(77.5％)and TNPs-550(93.4％)may resulted from the positive nonlinear response of the larger electrochemical active surface area,the improved electron transfer and suitable surface structure,and not the"anatase-to-rutile"of surface TiO2 nanotubes.After 90 min of electrolysis,using Ru02 as an anode and adding 0.3 g·L-1 NaCl solution,87.5％nitrate was removed,and the by-products(ammonia and nitrite)were negligible.Increased temperature and alkaline conditions can enhance the nitrate removal,while higher initial nitrate concentration only improved the nitrate removal slightly.Moreover,The TNPs-500 elec-trode also exhibited excellent nitrate removal performance in real groundwater with the efficiency at 82.9％and 92.1％after 90 and 120 min,which were 0.87(removal efficiency=95.1％),0.92(removal efficiency=100％)of the efficiency for simulated groundwater,indicating the widely applicable condi-tions of the TNPs-500 electrode.This approach of surface-bonded elements and structure modification through calcination significantly improves catalytic activity and will guide the simple designing of functional nanostructured electrodes with wide application conditions.
      原文链接:
    • 万方数据
    • 维普

    A comparative techno-economic analysis for implementation of carbon dioxide to chemicals processes

    Zhun LiJinyang ZhaoPing LiYadong Yu...
    86-101页
    查看更多>>摘要：CO2-based carbon-neutral organics production processes could potentially reshape the chemical in-dustry.However,their feasibility and net carbon footprint rely strongly on the sources of H2.Herein,we present a comprehensive comparative techno-economic analysis of CO2-based methanol(CO2TM)and α-olefins(CO2TO)manufacturing using various feedstock supply modes:(1)the standalone mode with external CO2 but H2 from on-site water electrolysis,(2)the integrated mode with both CO2 and H2 recovered from coal-chemical plants,and(3)the integrated mode with recycled CO2 but H2 from on-site water electrolysis.The integration of CO2TM and CO2TO into coal-to-olefins(CTO)and coal-to-methanol(CTM)facilities is currently cost-effective and can reduce net CO2 emissions by 65.7％and 68.5％,resulting in a three-fold and two-fold increase in carbon efficiency,respectively.As carbon tax policies and electrolysis technologies continue to evolve,standalone CO2TM and CO2TO are projected to become more economically competitive than CTO and CTM by 2035-2045.
      原文链接:
    • 万方数据
    • 维普

    Selective hydrogenation of dimethyl toluene-2,4-dicarbamate over supported Rh-based catalysts:Effect of support properties

    Yaqi QuXiang LiHualiang AnXinqiang Zhao...
    102-109页
    查看更多>>摘要：The selective hydrogenation of dimethyl toluene-2,4-dicarbamate(TDC)to methyl cyclohexyl-2,4-dicarbamate(also called hydrogenated TDC,HTDC)is an essential process for non-phosgene synthesis of methylcyclohexane-2,4-diisocyanate.Herein,we prepared a series of supported Rh-based catalysts by the excessive impregnation method and investigated their catalytic performance for the selective hy-drogenation of TDC.The emphasis was put on the influence of support properties on the catalytic per-formance.Among the prepared catalysts,Rh/γ-Al2O3 performed the best:a HTDC yield of 88.4％was achieved with a 100％conversion of TDC under the conditions of 100 ℃,3 MPa and 1 h.Furthermore,Rh/γ-Al2O3 could be repetitively used for 4 times without a significant loss of its catalytic activity.TEM,XRD,N2 adsorption-desorption,H2-TPR,NH3/CO2-TPD,XPS and ICP characterizations were employed to distinguish the properties of the prepared catalysts and the results were correlated with their catalytic performance.It is indicated that the yield of HTDC shows a positive relevance with the percentage of moderate-to-strong acid sites and the content of Rhn+(n ≥ 3)in the catalysts.High values of the per-centage and the content can promote a strong interaction between Rh nanoparticles and the supports,facilitating both the transfer of electrons from Rh to the support and the formation of Rhn+species.This is conducive to activating the benzene ring of TDC and thereby improving the yield of HTDC.
      原文链接:
    • 万方数据
    • 维普

    Steady-state and dynamic simulation of gas phase polyethylene process

    Xiaodong HongWanke ChenZuwei LiaoXiaoqiang Fan...
    110-120页
    查看更多>>摘要：Gas-phase polyethylene(PE)processes are among the most important methods for PE production.A deeper understanding of the process characteristics and dynamic behavior,such as properties of PE and reactor stability,holds substantial interest for both academic researchers and industries.In this study,both steady-state and dynamic models for a gas-phase polyethylene process are established as a simulation platform,which can be used to study a variety of operation tasks for commercial solution polyethylene processes,such as new product development,process control and real-time optimization.The copolymerization kinetic parameters are fitted by industrial data.Additionally,a multi-reactor series model is developed to characterize the temperature distribution within the fluidized bed reactor.The accuracy in predicting melt index and density of the polymer,and the dynamic behavior of the developed models are verified by real plant data.Moreover,the dynamic simulation platform is applied to compare four practical control schemes for reactor temperature by a series of simulation experiments,since temperature control is important in industrial production.The results reveal that all four schemes effectively track the setpoint temperature.However,only the demineralized water temperature cascade control demonstrates excellent performance in handling disturbances from both the recycle gas sub-system and the heat exchange subsystem.
      原文链接:
    • 万方数据
    • 维普