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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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    Simultaneous removal of sulfur dioxide and nitrogen oxide from flue gas by phosphorus sludge:The performance and absorption mechanism

    Yuanyuan YinXujun WangLei XuBinbin He...
    212-221页
    查看更多>>摘要：Developing low-cost and green simultaneous desulfurization and denitrification technologies is of great significance for sulfur dioxide(SO2)and nitrogen oxide(NOx)emission control at low temperatures,especially for small and medium-sized coal-fired boilers and furnaces.Herein,phosphorus sludge,an industrial waste from the production process of yellow phosphorus,has been developed to simulta-neously eliminate SO2 and NOx from coal-fired flue gas.The key factors affecting the experimental results indicate that desulfurization and denitrification efficiency of over 95％can be achieved at a low tem-perature of 55 ℃.Further,the absorption mechanism was investigated by characterizing the solid and liquid phases of the phosphorus sludge during the absorption process.The efficient removal of SO2 is attributed to the abundance of iron(Fe3+)and manganese(Mn2+)in the absorbent.SO2 can be rapidly catalyzed and converted to SO4-by them.The key to NOx removal is the oxidation of NO toward water-soluble high-valent nitrogen oxides by oxidizing reactive substances induced via yellow phosphorus,which are then absorbed by water and converted to NO3-.Meanwhile,yellow phosphorus is oxidized to phosphoric acid(H3PO4).The spent absorption slurry can be reused through wet process phosphoric acid production,as it contains sulfuric acid(H2SO4),nitric acid(HNO3),and H3PO4.Accordingly,this is a technology with broad application prospects.
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    Highly selective extraction of aromatics from aliphatics by using metal chloride-based ionic liquids

    Hui YuXiaojia WuChuanqi GengXinyu Li...
    222-229页
    查看更多>>摘要：The separation of aromatics from aliphatics is essential for achieving maximum exploitation of oil re-sources in the petrochemical industry.In this study,a series of metal chloride-based ionic liquids were prepared and their performances in the separation of 1,2,3,4-tetrahydronaphthalene(tetralin)/dodecane and tetralin/decalin systems were studied.Among these ionic liquids,1-ethyl-3-methylimidazolium tetrachloroferrate([EMIM][FeCl4])with the highest selectivity was used as the extractant.Density functional theory calculations showed that[EMIM][FeCl4]interacted more strongly with tetralin than with dodecane and decalin.Energy decomposition analysis of[EMIM][FeCl4]-tetralin indicated that electrostatics and dispersion played essential roles,and induction cannot be neglected.The van der Waals forces was a main effect in[EMIM][FeCl4]-tetralin by independent gradient model analysis.The tetralin distribution coefficient and selectivity were 0.8 and 110,respectively,with 10％(mol)tetralin in the initial tetralin/dodecane system,and 0.67 and 19.5,respectively,with 10％(mol)tetralin in the initial tetralin/decalin system.The selectivity increased with decreasing alkyl chain length of the extractant.The influence of the extraction temperature,extractant dosage,and initial concentrations of the system components on the separation performance were studied.Recycling experiments showed that the re-generated[EMIM][FeCl4]could be used repeatedly.
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    Preparation and properties of high-energy-density aluminum/boron-containing gelled fuels

    Yi ChenKang XueYang LiuLun Pan...
    230-242页
    查看更多>>摘要：Energetic nanofluid fuel has caught the attention of the field of aerospace liquid propellant for its high energy density(HED),but it suffers from the inevitable solid-liquid phase separation problem.To resolve this problem,herein we synthesized the high-Al-/B-containing(up to 30％(mass))HED gelled fuels,with low-molecular-mass organic gellant Z,which show high net heat of combustion(NHOC),density,storage stability,and thixotropic properties.The characterizations indicate that the application of energetic particles to the gelled fuels obviously destroys their fibrous network structures but can provide the new particle-gellant gelation microstructures,resulting in the comparable stability between 1.0％(mass)Z/JP-10+30％(mass)Al or B and pure JP-10 gelled fuel.Moreover,the gelled fuels with high-content Al or B exhibit high shear-thinning property,recovery capability,and mechanical strength,which are favorable for their storage and utilization.Importantly,the prepared 1.0％(mass)Z/JP-10+30％(mass)B(or 1.0％(mass)Z/JP-10+30％(mass)Al)shows the density and NHOC 1.27 times(1.30)and 1.43 times(1.21)higher than pure JP-10,respectively.This work provides a facile and valid approach to the manufacturing of HED gelled fuels with high content of energetic particles for gel propellants.
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    Effect of bubble morphology and behavior on power consumption in non-Newtonian fluids'aeration process

    Xiemin LiuJing WanJinnan SunLin Zhang...
    243-254页
    查看更多>>摘要：Due to a prolonged operation time and low mass transfer efficiency,the primary challenge in the aeration process of non-Newtonian fluids is the high energy consumption,which is closely related to the form and rate of impeller,ventilation,rheological properties and bubble morphology in the reactor.In this perspective,through optimal computational fluid dynamics models and experiments,the relation-ship between power consumption,volumetric mass transfer rate(kLa)and initial bubble size(d0)was constructed to establish an efficient operation mode for the aeration process of non-Newtonian fluids.It was found that reducing the d0 could significantly increase the oxygen mass transfer rate,resulting in an obvious decrease in the ventilation volume and impeller speed.When d0 was regulated within 2-5 mm,an optimal kLa could be achieved,and 21％of power consumption could be saved,compared to the case of bubbles with a diameter of 10 mm.
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    Long-term operation optimization of circulating cooling water systems under fouling conditions

    Jiarui LiangYong TianShutong YangYong Wang...
    255-267页
    查看更多>>摘要：Fouling caused by excess metal ions in hard water can negatively impact the performance of the circu-lating cooling water system(CCWS)by depositing ions on the heat exchanger's surface.Currently,the operation optimization of CCWS often prioritizes short-term flow velocity optimization for minimizing power consumption,without considering fouling.However,low flow velocity promotes fouling.Therefore,it's crucial to balance fouling and energy/water conservation for optimal CCWS long-term operation.This study proposes a mixed-integer nonlinear programming(MINLP)model to achieve this goal.The model considers fouling in the pipeline,dynamic concentration cycle,and variable frequency drive to optimize the synergy between heat transfer,pressure drop,and fouling.By optimizing the concentration cycle of the CCWS,water conservation and fouling control can be achieved.The model can obtain the optimal operating parameters for different operation intervals,including the number of pumps,frequency,and valve local resistance coefficient.Sensitivity experiments on cycle and environmental temperature reveal that as the cycle increases,the marginal benefits of energy/water conservation decrease.In periods with minimal impact on fouling rate,energy/water conservation can be achieved by increasing the cycle while maintaining a low fouling rate.Overall,the proposed model has significant energy/water saving effects and can comprehensively optimize the CCWS through its incorporation of fouling and cycle optimization.
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    Active MoS2-based electrode for green ammonia synthesis

    Xin LiuLei YangTao WeiShanping Liu...
    268-275页
    查看更多>>摘要：Nitrogen electro-reduction under mild conditions is one promising alternative approach of the energy-consuming Haber-Bosch process for the artificial ammonia synthesis.One critical aspect to unlocking this technology is to discover the catalysts with high selectivity and efficiency.In this work,the N2-to-NH3 conversion on the functional MoS2 is fully investigated by density functional theory calculations since the layered MoS2 provides the ideal platform for the elaborating copies of the nitrogenase found in nature,wherein the functionalization is achieved via basal-adsorption,basal-substitution or edge-substitution of transition metal elements.Our results reveal that the edge-functionalization is a feasible strategy for the activity promotion;however,the basal-adsorption and basal-substitution separately suffer from the electrochemical instability and the NRR inefficiency.Specifically,MoS2 functionalized via edge W-sub-stitution exhibits an exceptional activity.The energetically favored reaction pathway is through the distal pathway and a limiting potential is less than 0.20 V.Overall,this work escalates the rational design of the high-effective catalysts for nitrogen fixation and provides the explanation why the predicated catalyst have a good performance,paving the guidance for the experiments.
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    Rational surface charge engineering of haloalkane dehalogenase for boosting the enzymatic performance in organic solvent solutions

    Yin WuYan Sun
    276-285页
    查看更多>>摘要：Biocatalysis in organic solvents(OSs)has numerous important applications,but native enzymes in OSs often exhibit limited catalytic performance.Herein,we proposed a computation-aided surface charge engineering strategy to improve the catalytic performance of haloalkane dehalogenase DhaA in OSs based on the energetic analysis of substrate binding to the DhaA surface.Several variants with enhanced OS resistance were obtained by replacing negative charged residues on the surface with positive charged residue(Arg).Particularly,a four-substitution variant E16R/E93R/E121R/E257R exhibited the best cata-lytic performance(five-fold improvement in OS resistance and seven-fold half-life increase in 40％(vol)dimethylsulfoxide).As a result,the overall catalytic performance of the variant could be at least 26 times higher than the wild-type DhaA.Fluorescence spectroscopy and molecular dynamics simulation studies revealed that the residue substitution mainly enhanced OS resistance from four aspects:(a)improved the overall structural stability,(b)increased the hydrophobicity of the local microenvironment around the catalytic triad,(c)enriched the hydrophobic substrate around the enzyme molecule,and(d)lowered the contact frequency between OS molecules and the catalytic triad.Our findings validate that computation-aided surface charge engineering is an effective and ingenious rational strategy for tailoring enzyme performance in OSs.
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    Preparation of PrFexCo1-xO3/Mt catalyst and study on degradation of 2-hydroxybenzoic acid wastewater by catalytic wet peroxide oxidation

    Binxia ZhaoYijia GaoTiancheng HunXiaoxiao Fan...
    286-297页
    查看更多>>摘要：In this study,the perovskite nanocomposite PrFexCo1-xO3(Pr(S))was successfully synthesized by the sol-gel method;PrFexCo1-xO3/Al-pillared montmorillonite(Pr(S)/Mt)catalysts were prepared by impreg-nation(D)method and solid-melting(G)method,respectively,with Pr(S)as the active component and Al-pillared montmorillonite as the carrier.The catalysts were applied to treat the 2-hydroxybenzoic acid(2-HA)-simulated wastewater by catalytic wet peroxide oxidation(CWPO)technique,and the chemical oxygen demand(COD)removal rate and the 2-HA degradation rate were used as indicators to evaluate the catalytic performance.The results of the experiment indicated that the solid-melting method was more conducive to preparing the catalyst when the Co/Fe molar ratio of 7:3 and the optimal structural properties of the catalysts were achieved.The influence of operating parameters,including reaction temperature,catalyst dosage,H2O2 dosage,pH,and initial 2-HA concentration,were optimized for the degradation of 2-HA by CWPO.The results showed that 97.64％of 2-HA degradation and 75.23％of COD removal rate were achieved under more suitable experimental conditions.In addition,after the catalyst was used five times,the degradation rate of 2-HA could still reach 76.93％,which implied the high stability and reusability of the catalyst.The high catalytic activity of the catalyst was due to the doping of Co into PrFeO3,which could promote the generation of HO·,and the high stability could be attributed to the loading of Pr(S)onto Al-Mt,which reduced the leaching of reactive metals.The study of reaction mechanism and kinetics showed that the whole degradation process conformed to the pseudo-first-order kinetic equation,and the Langmuir-Hinshelwood method was applied to demonstrate that catalysis was dominant in the degradation process.
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    Notes for Contributors

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