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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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    Green synthesis of ZSM-5 using silica fume and catalytic co-cracking of lignin and plastics for production of monocyclic aromatics

    Hongbing FuYufei GuTianhua GaoFuwei Li...
    92-105页
    查看更多>>摘要：ZSM-5 with hierarchical pore structure was synthesized by a simple two-step hydrothermal crystalliza-tion from silica fume without using any organic ammonium templates.The synthesized ZSM-5 were oval shaped particles with a particle size about 2.0 μm and weak acid-dominated with proper Brønsted(B)and Lewis(L)acid sites.The ZSM-5 was used for catalytic co-cracking of n-octane and guaiacol,low-density polyethylene(LDPE)and alkali lignin(AL)to enhance the production of benzene,toluene,ethyl-benzene and xylene(BTEX).The most significant synergistic effect occurred at n-octane/guaiacol at 1∶1 and LDPE/AL at 1∶3,under the condition,the achieved BTEX selectivity were 24％and 33％(mass)higher than the calculated values(weighted average).The highest BTEX selectivity reached 88.5％,which was 3.7％and 54.2％higher than those from individual cracking LDPE and AL.The synthesized ZSM-5 exhibited superior catalytic performance compared to the commercial ZSM-5,indicating potential application prospect.
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    Investigation of oxy-fuel combustion for methane and acid gas in a diffusion flame

    Songling GuoXun TaoFan ZhouMengyan Yu...
    106-116页
    查看更多>>摘要：Co-combustion of methane(CH4)and acid gas(AG)is required to sustain the temperature in Claus reac-tion furnace.In this study,oxy-fuel combustion of methane and acid gas has been experimentally studied in a diffusion flame.Three equivalence ratios(ER=1.0,1.5,2.0)and CH4-addition ratios(CH4/AG=0.3,0.5,0.7)were examined and the flame was interpreted by analyzing the distributions of the temperature and species concentration along central axial.CH4-AG diffusion flame could be classified into three sec-tions namely initial reaction,oxidation and complex reaction sections.Competitive oxidation of CH4 and H2S was noted in the first section wherein H2S was preferred and both were mainly proceeding decom-position and partial oxidation.SO2 was formed at oxidation section together with obvious presence of H2 and CO.However,H2 and CO were inclined to be sustained under fuel rich condition in the complex reac-tion section.Reducing ER and increasing CH4/AG contributed to higher temperature,H2S and CH4 oxida-tion and CO2 reactivity.Hence a growing trend for CH4 and AG to convert into H2,CO and SO2 could be witnessed.And this factor enhanced the generation of CS2 and COS in the flame inner core by interactions of CH4 and CO2 with sulfur species.COS was formed through the interactions of CO and CO2 with sulfur species.The CS2 production directly relied on reaction of CH4 with sulfur species.The concentration of COS was greater than CS2 since CS2 was probably inhibited due to the presence of H2.COS and CS2 could be consumed by further oxidation or other complex reactions.
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    Study on synergistic leaching of potassium and phosphorus from potassium feldspar and solid waste phosphogypsum via coupling reactions

    Chao LiShizhao WangYunshan WangXuebin An...
    117-129页
    查看更多>>摘要：To achieve the resource utilization of solid waste phosphogypsum(PG)and tackle the problem of utiliz-ing potassium feldspar(PF),a coupled synergistic process between PG and PF is proposed in this paper.The study investigates the features of P and F in PG,and explores the decomposition of PF using hydroflu-oric acid(HF)in the sulfuric acid system for K leaching and leaching of P and F in PG.The impact factors such as sulfuric acid concentration,reaction temperature,reaction time,material ratio(PG/PF),liquid-solid ratio,PF particle size,and PF calcination temperature on the leaching of P and K is systematically investigated in this paper.The results show that under optimal conditions,the leaching rate of K and P reach more than 93％and 96％,respectively.Kinetics study using shrinking core model(SCM)indicates two significant stages with internal diffusion predominantly controlling the leaching of K.The apparent activation energies of these two stages are 11.92 kJ·mol-1 and 11.55 kJ·mol-1,respectively.
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    Enhanced activation of peroxymonosulfate by Fe/N co-doped ordered mesoporous carbon with dual active sites for efficient removal of m-cresol

    Donghui LiWenzhe WuXue RenXixi Zhao...
    130-144页
    查看更多>>摘要：The novel Fe-N co-doped ordered mesoporous carbon with high catalytic activity in m-cresol removal was prepared by urea-assisted impregnation and simple pyrolysis method.During the preparation of the Fe-NC catalyst,the complexation of N elements in urea could anchor Fe,and the formation of C3N4 during urea pyrolysis could also prevent migration and aggregation of Fe species,which jointly improve the dispersion and stability of Fe.The FeN4 sites and highly dispersed Fe nanoparticles synergistically trigger the dual-site peroxymonosulfate(PMS)activation for highly efficient m-cresol degradation,while the ordered mesoporous structure of the catalyst could improve the mass transfer rate of the catalytic process,which together promote catalytic degradation of m-cresol by PMS activation.Reactive oxygen species(ROS)analytic experiments demonstrate that the system degrades m-cresol by free radical path-way mainly based on SO4-·and·OH,and partially based on OH as the active components,and a possible PMS activation mechanism by 5Fe-50 for m-cresol degradation was proposed.This study can provide theoretical guidance for the preparation of efficient and stable catalysts for the degradation of organic pollutants by activated PMS.
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    Environmental,economic and exergy analysis of separation of ternary azeotrope by variable pressure extractive distillation based on multi-objective optimization

    Peizhe CuiJiafu XingChen LiMengjin Zhou...
    145-157页
    查看更多>>摘要：In this work,the ternary azeotrope of tert-butyl alcohol/ethyl acetate/water is separated by extractive distillation(ED)to recover the available constituents and protect the environment.Based on the conduc-tor like shielding model and relative volatility method,ethylene glycol was selected as the extractant in the separation process.In addition,in view of the characteristic that the relative volatility between com-ponents changes with pressure,the multi-objective optimization method based on nondominated sorting genetic algorithm Ⅱ optimizes the pressure and the amount of solvent cooperatively to avoid falling into the optimal local solution.Based on the optimal process parameters,the proposed heat-integrated pro-cess can reduce the gas emissions by 29.30％.The heat-integrated ED,further coupled with the pervapo-ration process,can reduce gas emission by 42.36％and has the highest exergy efficiency of 47.56％.In addition,based on the heat-integrated process,the proposed two heat pump assisted heat-integrated ED processes show good economic and environmental performance.The double heat pump assisted heat-integrated ED can reduce the total annual cost by 28.78％and the gas emissions by 55.83％compared with the basis process,which has a good application prospect.This work provides a feasible approach for the separation of ternary azeotropes.
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    Study of the reaction mechanism for preparing powdered activated coke with SO2 adsorption capability via one-step rapid activation method under flue gas atmosphere

    Binxuan ZhouJingcai ChangJun LiJinglan Hong...
    158-168页
    查看更多>>摘要：In this study,the impact of different reaction times on the preparation of powdered activated carbon(PAC)using a one-step rapid activation method under flue gas atmosphere is investigated,and the un-derlying reaction mechanism is summarized.Results indicate that the reaction process of this method can be divided into three stages:stage Ⅰ is the rapid release of volatiles and the rapid consumption of O2,primarily occurring within a reaction time range of 0-0.5 s;stage Ⅱ is mainly the continuous release and diffusion of volatiles,which is the carbonization and activation coupling reaction stage,and the carbonization process is the main in this stage.This stage mainly occurs at the reaction time range of 0.5-2.0 s when SL-coal is used as material,and that is 0.5-3.0 s when JJ-coal is used as material;stage Ⅲ is mainly the activation stage,during which activated components diffuse to both the surface and interior of particles.This stage mainly involves the reaction stage of CO2 and H2O(g)activation,and it mainly occurs at the reaction time range of 2.0-4.0 s when SL-coal is used as material,and that is 3.0-4.0 s when JJ-coal is used as material.Besides,the main function of the first two stages is to provide more diffusion channels and contact surfaces/activation sites for the diffusion and activation of the activated components in the third stage.Mastering the reaction mechanism would serve as a crucial reference and foundation for designing the structure,size of the reactor,and optimal positioning of the activator nozzle in PAC preparation.
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    Extending homogeneous fluidization flow regime of Geldart-A particles by exerting axial uniform and steady magnetic field

    Qiang ZhangWankun LiuHengjun GaiQuanhong Zhu...
    169-177页
    查看更多>>摘要：The homogeneous/particulate fluidization flow regime is particularly suitable for handling the various gas-solid contact processes encountered in the chemical and energy industry.This work aimed to extend such a regime of Geldart-A particles by exerting the axial uniform and steady magnetic field.Under the action of the magnetic field,the overall homogeneous fluidization regime of Geldart-A magnetizable par-ticles became composed of two parts:inherent homogeneous fluidization and newly-created magnetic stabilization.Since the former remained almost unchanged whereas the latter became broader as the magnetic field intensity increased,the overall homogeneous fluidization regime could be extended remarkably.As for Geldart-A nonmagnetizable particles,certain amount of magnetizable particles had to be premixed to transmit the magnetic stabilization.Among others,the mere addition of magnetizable particles could broaden the homogeneous fluidization regime.The added content of magnetizable parti-cles had an optimal value with smaller/lighter ones working better.The added magnetizable particles might raise the ratio between the interparticle force and the particle gravity.After the magnetic field was exerted,the homogeneous fluidization regime was further expanded due to the formation of mag-netic stabilization flow regime.The more the added magnetizable particles,the better the magnetic per-formance and the broader the overall homogeneous fluidization regime.Smaller/lighter magnetizable particles were preferred to maximize the magnetic performance and extend the overall homogeneous fluidization regime.This phenomenon could be ascribed to that the added magnetizable particles them-selves became more Geldart-A than-B type as their density or size decreased.
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    Removal of kathon by UV-C activated hydrogen peroxide:Kinetics,mechanisms,and enhanced biodegradability assessment

    Jinzhi CuiGuiqiao WangXing RongWensu Gao...
    178-187页
    查看更多>>摘要：Kathon(CMI-MI),a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one(CMI)and 2-methyl-4-isothiazolin-3-one(MI),was extensively used in industry as a nonoxidizing biocide or disinfectant.However,it would show adverse effects on aquatic life when it is discharged into surface water.In this study,the removal performance,parameter influence,degradation products and enhancement of subse-quent biodegradation of CMI-MI in UV/H2O2 system were systematically investigated.The degradation rate of CMI-MI could reach 90％under UV irradiation for 20 min when the dosage of H2O2 was 0.3 mmol·L-1.The DOC(dissolved organic carbon)mineralization rate of CMI-MI could reach 35％under certain conditions([H2O2]=0.3 mmol·L-1,UV irradiation for 40 min).kobs was inversely proportional to the concentration of CMI-MI and proportional to the concentration of H2O2.The degradation rate of CMI-MI was almost unchanged in the pH range from 4 to 10.Except the presence of CO32-inhibited the removal rate of CMI-MI,SO42-,Cl-,NO3-,and NH4+did not interfere with the degradation of CMI-MI in the system.It was found that UV/H2O2 system had lower energy consumption and more economic advan-tage compared with UV/PS system by comparing the EEO(electric energy per order)values under the same conditions.Two main organic products were identified,namely HCOOH and CH3NH2.There's also the formation of Cl-and SO42-.After UV and UV/H202 photolysis,the biochemical properties of CMI-MI solution were obviously improved,especially the UV/H2O2 treatment effect was better,indicating that UV/H2O2 technology is expected to combine with biotechnology to remove CMI-MI effectively and envi-ronmentally friendly from wastewater.
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    Insight into the experiment and extraction mechanism for separating carbazole from anthracene oil with quaternary ammonium-based deep eutectic solvents

    Xudong ZhangYanhua LiuJun ShenYugao Wang...
    188-199页
    查看更多>>摘要：Carbazole is an irreplaceable basic organic chemical raw material and intermediate in industry.The sep-aration of carbazole from anthracene oil by environmental benign solvents is important but still a chal-lenge in chemical engineering.Deep eutectic solvents(DESs)as a sustainable green separation solvent have been proposed for the separation of carbazole from model anthracene oil.In this research,three quaternary ammonium-based DESs were prepared using ethylene glycol(EG)as hydrogen bond donor and tetrabutylammonium chloride(TBAC),tetrabutylammonium bromide or choline chloride as hydro-gen bond acceptors.To explore their extraction performance of carbazole,the conductor-like screen-ing model for real solvents(COSMO-RS)model was used to predict the activity coefficient at infinite dilution(γ∞)of carbazole in DESs,and the result indicated TBAC:EG(1:2)had the stronger extraction ability for carbazole due to the higher capacity at infinite dilution(C∞)value.Then,the separation per-formance of these three DESs was evaluated by experiments,and the experimental results were in good agreement with the COSMO-RS prediction results.The TBAC∶EG(1∶2)was determined as the most promising solvent.Additionally,the extraction conditions of TBAC∶EG(1∶2)were optimized,and the extraction efficiency,distribution coefficient and selectivity of carbazole could reach up to 85.74％,30.18 and 66.10％,respectively.Moreover,the TBAC∶EG(1∶2)could be recycled by using environmentally friendly water as antisolvent.In addition,the separation performance of TBAC∶EG(1∶2)was also evalu-ated by real crude anthracene,the carbazole was obtained with purity and yield of 85.32％,60.27％,respectively.Lastly,the extraction mechanism was elucidated by σ-profiles and interaction energy anal-ysis.Theoretical calculation results showed that the main driving force for the extraction process was the hydrogen bonding((N-H… Cl)and van der Waals interactions(C-H…O and C-H …π),which corresponding to the blue and green isosurfaces in IGMH analysis.This work presented a novel method for separating carbazole from crude anthracene oil,and will provide an important reference for the separation of other high value-added products from coal tar.
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    Importance of oxygen-containing functionalities and pore structures of biochar in catalyzing pyrolysis of homologous poplar

    Li QiuChao LiShu ZhangShuang Wang...
    200-211页
    查看更多>>摘要：Biochar and bio-oil are produced simultaneously in one pyrolysis process,and they inevitably contact and may interact,influencing the composition of bio-oil and modifying the structure of biochar.In this sense,biochar is an inherent catalyst for pyrolysis.In this study,in order to investigate the influence of functionalities and pore structures of biochar on its capability for catalyzing the conversion of homol-ogous volatiles in bio-oil,three char catalysts(600C,800C,and 800AC)produced via pyrolysis of poplar wood at 600 or 800 ℃ or activated at 800 ℃,were used for catalyzing pyrolysis of homologous poplar wood at 600 ℃,respectively.The results indicated that the 600C catalyst was more active than 800C and 800AC for catalyzing cracking of volatiles to form more gas(yield increase by 40.2％)and aromatization of volatiles to form more light or heavy phenolics,due to its abundant oxygen-containing functionalities acting as active sites.The developed pores of the 800AC showed no such catalytic effect but could trap some volatiles and allow their further conversion via sufficient aromatization.Nevertheless,the inter-action with the volatiles consumed oxygen on 600C(decrease by 50％),enhancing the aromatic degree and increasing thermal stability.The dominance of deposition of carbonaceous material of a very aro-matic nature over 800C and 800AC resulted in net weight gain and blocked micropores but formed additional macropores.The in situ diffuse reflectance infrared Fourier transform spectroscopy characterization of the catalytic pyrolysis indicated superior activity of 600C for removal of-OH,while conversion of the intermediates bearing C=O was enhanced over all the char catalysts.
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