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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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    Mechanochemical synthesis of Ag/TiO2@PANI nanocomposites for enhanced toluene photocatalytic degradation under near-ultraviolet light

    Qiulian ZhuBinghao WangYing MoShengfan Liao...
    222-229页
    查看更多>>摘要:Photocatalytic oxidation technology is a promising green technology for degrading volatile organic compounds(VOCs)due to its non-toxic,environmentally friendly,energy-saving and affordable char-acteristics.In this paper,Ag/TiO2@PANI-MC with high stability and activity was synthesized by the mechanochemical method.The designed Ag/TiO2@PANI-MC were of high specific surface area,light absorption capacity and low recombination rate of electron-hole pairs,which was demonstrated by various characterizations.When applied in photocatalytic toluene oxidation,the conversion is 17%at 20 ℃ under 100 W high-pressure mercury lamp.This photocatalytic performance is with less temper-ature sensitivity and significantly improved compared with Ag/TiO2 or TiO2 catalysts.Furthermore,the reaction routine was also confirmed by gas chromatography-mass spectrometry and toluene was mineralized to CO2.More importantly,the Ag/TiO2@PANI-MC indicated good reusability after three cy-cles,which was verified by the Fourier transform-infrared spectroscopy comparison with fresh and used catalysts.Our work proves a potential way of constructing nanocomposites based on mechanochemical synthesis for enhanced toluene photocatalytic degradation.

    Enhanced thermal conductivity and mechanical properties of boron nitride@polymethylacrylimide/epoxy composites with self-assembled stable three-dimensional network

    Yang WangYe FangXudong YangHongmin Cong...
    230-238页
    查看更多>>摘要:Constructing a three-dimensional(3D)network of fillers with high thermal conductivity is considered to be an effective strategy to obtain ideal thermal management materials(TMMs).However,3D filler network is often disrupted by the subsequent processing and forming processes,and it is difficult to incorporate high levels of fillers into lyophilized aerogels,which is a key factor limiting their widespread use.In this work,boron nitride@polymethylacrylimide/epoxy(BN@PMI/EP)composites with a stable 3D BN network were prepared by freeze-drying and hot-pressing.A water-soluble copolymer quaternary ammonium salt has been synthesized by the solution polymerization.A BN@PMI aerogel was obtained by the freeze-drying of ammonium salt and BN solution and thermal imidization.The BN@PMI aerogel has a six-membered imine ring structure that can be loaded with a high content of BN,which ensures the stability of the 3D BN network structure and facilitates the subsequent impregnation of EP in vacuum,which is one of the innovations of this work.The stable and complete 3D BN network leads to the enhancement of thermal conductivity,and the out-of-plane and in-plane thermal conductivities of BN@PMI/EP reach 1.21 W·m-1·K-1 and 2.76 W m-1·K-1 at a BN mass loading of 40%,respectively.Meanwhile,the excellent mechanical properties and results of finite-element simulation and actual experiments confirm that BN@PMI/EP is a potential TMM.

    Town gas daily load forecasting based on machine learning combinatorial algorithms:A case study in North China

    Peng XuYuwei SongJingbo DuFeilong Zhang...
    239-252页
    查看更多>>摘要:Timely and accurate gas load forecasting is critical for optimal scheduling under tight winter gas supply conditions.Under the background of the implementation of"coal-to-gas"for winter heating in rural areas of North China and the sufficient field research,this paper proposes a correction algorithm for daily average temperature based on the cumulative effect of temperature and a set of combined forecasting models for gas load forecasting based on machine learning and introduces its application through a detailed case study.In order to solve the problems of forecasting performance degradation and complexity increase caused by too many influencing factors,a combined forecasting model back-prop-agation-improved complete ensemble empirical mode decomposition with adaptive-noise-gated recurrent unit based on residual sequence analysis is proposed.Back propagation(BP)neural network is used to analyze the main influencing factors,so that the secondary influencing factors are reflected in the residual sequence generated by the forecasting.After decomposition,reconstruction,and re-forecast,the mean absolute percentage error(MAPE)of the combined models for the daily gas load in the case study has been controlled under 1.9%,which is significantly improved compared with each single algorithm.The forecasting error before and after the temperature correction are also compared.It is found that the MAPE with the temperature correction is reduced by 1.7%,which reflects the effectiveness of the tem-perature correction to eliminate the impact of temperature cumulative effect and its contribution to the improvement of the forecasting accuracy for the combined forecasting models.

    Exploring the metallurgical coke thermal properties in viewpoint of experiment and molecular simulation

    Zhao LeiQiannan YueQin PeiJi Chen...
    253-265页
    查看更多>>摘要:The Chinese standard method of GB/T 4000-2017 was unable to accurately measure the coke thermal properties in the large blast furnace.Therefore,the coke compressive strength(CCS)test at a high temperature was designed to examine the coke thermal properties.Then,the large-scale coke model(sp2C17421sp3C6579)was established.After,the ReaxFF molecular dynamics simulations were imple-mented to mimic the coke solution loss(CSL)and the CCS at the high temperature.It was found that the adsorption energy and the diffusion energy of micropores were greater than those of mesopores and macropores,indicating that the CSL reaction mainly happened in the coke micropore.It was discovered that the CSL reaction mechanism was the sp3 C oxidization mechanism with the transient state of ketene structure.And,it was detected that the CCS process was divided into the plastic deformation,the instantaneous fracture and the elastic deformation and yield,which was caused by the local recon-struction,the overall folding and the center stretching of carbon layer,respectively.By comparing simulated results with experiments,it was proved that obtained mechanisms were valid.The proposed experimental and simulated methods provided a novel method to measure and understand the coke thermal properties.

    Electrocoagulation efficiency probed using electrochemical impedance spectroscopy

    Abdellatif AarfaneMeryem BensemlaliAbderrahmane ElmeloukyBadreddine Hatimi...
    266-273页
    查看更多>>摘要:In order to treat the polluted discharge from El-Jadida,Morocco,a method of electrocoagulation using aluminum electrodes was used.This approach was coupled for the first time with high-frequency elec-trochemical impedance spectroscopy(EIS).Significant pollutant abatement was observed after 30 min,at a current density of 190.5 A·m-2,with a specific electrical energy consumption of 1.58 kW h(per gram of eliminated carbon organic demand(COD))and specific aluminum consumption of 0.11 g·g-1:electrocoagulation proved to be particularly effective,achieving 85.7%elimination of COD and a decrease of total dissolved solid(TDS)and electrical conductivity(EC)levels from 2430 mg·L-1 to 1773 mg·L-1 and from 4230 μS·cm-1 to 3210 μS·cm-1,respectively.As for USP and ORP,they decreased from 2.5 to 1.87 and from 244.6 mV to 51 mV,respectively.The inductance of the electrocoagulation system measured by EIS was modeled through an electrical equivalent circuit.When the applied intensity increased,the coagulation resistance increased suddenly when the applied electrical current reached 0.2 A(current density:95.2 A·m-2).At this point,the rate of COD abatement versus SEEC(specific electrical energy consumption decreases which shows that the EC process should be combined with another process to improve its efficiency,such as ultrasound.

    Energy,exergy,economic,and environmental compromising performance of dual-stage evaporation-ammonia hybrid compression-absorption refrigeration system for the cooling supply of keto-benzene dewaxing process

    Shuaishuai ZhangYuanbo LiuTong ZhengDa Ruan...
    274-289页
    查看更多>>摘要:Absorption refrigeration systems driven by low-temperature waste heat is one way to achieve"carbon neutrality."Meanwhile,the keto-benzene dewaxing equipment needs a cooling capacity of 5 MW,with refrigeration temperature of-10 ℃ and-25 ℃.This paper researches the feasibility of dual-stage evaporation-ammonia hybrid compression-absorption refrigeration system(DSE-AHCARS)replacing the vapor compression refrigeration system for keto-benzene dewaxing process based on energy,exergy,economic,and environmental(4E)analysis.At the primary-and secondary-stage evaporation temper-ature of 0 and-23 ℃,respectively,the coefficient of performance(COP)reaches the maximum value of 0.85;however,COP-electricity reaches the minimum value of 8.1.When the secondary-stage refrigera-tion temperature is-23 ℃,CO2 emission increases from 1150 t·a-1 to 3600 t·a-1,and life cycle climate performance increases from 3.29 × 104 to 7.7 × 104 t,with the primary-stage refrigeration temperature being-15-0 ℃,as well as matching three parameters to ensure the 4E compromising performance by the multi-objective optimization.To guarantee that the life cycle climate performance is less than 5.5 × 104 t,the payback period is<2 a,and COP is>0.6 at the optimal operation ranges,such that the refrigeration temperature difference between primary stage and secondary stage is within 20 ℃.The power of DSE-AHCARS was reduced by 77%compared with the vapor-compression refrigeration system.Therefore,the DSE-AHCARS can reduce CO2 emissions by about 6250 t·a-1 and save 1.2 × 105 t of CO2 in the life cycle climate performance term.This result shows that the DSE-AHCARS can completely replace the vapor-compression refrigeration system.

    Electrochemical performance of NiAl-activated cathode for green hydrogen production

    Sofiane LatrecheNaïma Boutarek-ZaourarIsmail BencherifaFaouzi Messaoud...
    290-298页
    查看更多>>摘要:The current study presents for the first time the preparation of a NiAl(68%(mass)Ni)intermetallic compound through the induction heating technique as a cathode for alkaline water electrolysis.The high-purity target was confirmed by X-ray diffraction and scanning electron microscopy combined with energy dispersive X-ray analysis.The chemical activation of Al from the NiAl electrode was achieved in a 25%NaOH solution at 353 K for 72 h.The performance and stability tests in a 1 mol·L-1 KOH solution at 298 K demonstrated that the enhancement of the hydrogen evolution reaction was 13 times higher in the activated NiAl electrode than in the non-activated NiAl electrode.In addition,the electrochemical tests showed that the activated NiAl electrode exhibited the best hydrogen evolution reaction performance.Based on the findings,it is believed that the induction heating technique is a promising route for pre-paring a highly active and cost-effective NiAl electrode for green hydrogen production.

    Notes for Contributors

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