2009年02期目次

  • Exploration for development pattern of cycle eco-industrial chian in the region of coal exploitation

    CHENG Shui-ying(Xi'an Branch Environmental protetion Research Institute,China Coal Research Institute,Xi'an 710054,China)

    Discuss the development pattern of the region of coal exploitation to construct circular economy industrial chain according to the instance of Shendong mining area.Based on the theory of recycle economy,Shendong mining area elongates and widens the industrial chain through developing circular eco-industrial chain,and the industrial chain systems containing coal,electricity,coke,chemical and building materials,etc.thus the new development pattern of eco-industrial chain of the region of coal exploitation is established.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 180K]

  • Economy assessment of coal-based methanol to poly-olefins project

    LUO Teng,YU Zhu-feng,CHEN Gui-feng,REN Shi-hua(Clean Coal Engineering & Research Center of Coal Industry,Beijing 100013,China)

    Using CCTM model,investment estimate and benefit analysis are carried on in the paper about coal-based methanol to poly-olefins project in which Texaco and Shell coal gasification technology are used in the project,whose scale is 600,000tons per year.Analysis on impact of coal prices and production prices on the production costs and internal rate of return.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 460K]

  • Application of coal deep processing technology

    XIONG Dao-ling,LI Jin-hui,ZHONG Hong-ming(School of Materials and Chemical Engineering,Jiangxi University of Science & Technology,Ganzhou 341000,China)

    The paper introduced two kinds of coal deep processing technology,coal gasification technology and coal liquefaction technology,and the application of the products of coal deep processing.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 198K]

  • Application and development of air dense medium fluidized bed coal beneficiation technology

    CHENG Xiao-yan,ZENG Ming(China University of Mining and Technology,Beijing 100083,China)

    Starting with applied background of air-fluidization technology in dry coal beneficiation area and performable condition.Summarized the ppliancethe necessity and accuracy of this technology.Reviewed several important courses in air dense medium fluidized bed coal beneficiation,Prospected that the technology would play a key rou in speeding up coal beneficiation cause and fulfiu to build environment-friendly society.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 71K]

  • Estimation of the separation parameters of the water medium fluidized separator

    PENG De-qiang,LV Yi-bo(College of Resource and Environment Engineering,Heilongjiang Institute of Science and Technology,Harbin 150027,China)

    The study of water medium fluidized separator(WMFS) is at the stage of research,in order to improve its faultiness,different factors effected the influencing factors were analyzed,ascertained the water flow,the depth of the feed pipe and the solids feed as the main influencing factors.An orthogonality form with three factors and three levels were designed after analyzing the different factors in influencing the separation effect.The optimum technological parameters were established after experiment that the interstitial water flow were 63mL/s;the depth of the feed pipe were 140mm;solids feed were 400g/L.Then the parameters would apply to the WMFS' development.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 123K]

  • Technical reconstruction of coal production process and control of quality in Xianqiao dressing-works

    HE Mao-lin(Yongcheng newbridge Holdings coal preparation plant,Yongcheng 476600,China)

    In order to meet the changes of raw coal feed,Xinqiao dressing-works has carried out constant technical innovation aiming at the washing technology which can not fit to the production for the past year,optimize the process of technological innovation focusing on the quality of products,orient products to the needs of the market.optimize the structure of product quality,increase the recovery rate,increase the economic efficiency.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 279K]

  • Development and prospect of classification techhology and equipment

    XU Jian-rong1,WANG Huai-fa2(1.The Department of mineral processing of Taiyuan University of Technology,Taiyuan 030024,China;2.Jinzhong College,Jinzhong 030600,China)

    Summarized the status quo of the classification technology and grading equipment,introduced the general classification-Hydrocyclone application status and development prospects,also introduced the development of the ultra-fine grading technology and typical grading equipment-Turbo-classifier and Jet-classifier.Finally,prospected for this technology.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 298K]

  • The floatation mechanism under centrifuge field

    LV Yu-ting,WANG Jin-cao(Heilongjiang institute of science and technology,Harbin 150027,China)

    Introduced two pulp flotation equipments-floatation cyclone and circular floatator,which separation process was under the centrifugal field.The main characteristic of those equipments is that pulp is sprayed into circular floatation unit by bubble generator under pressure and the mineralized froth are flowed out by the floating force under centrifugal,there are not motion parts in all equipments.The mineralizing process is a synthesize mineralizing process including hydrophobic-action mineralization,fine bubble separate-out mineralization etc.The floatation processing under the centrifuge field carried the advantages of good floatation selectivity,great unit volume treatment capability,fast floatation velocity,and shorten separation time.The research and development of the floatation equipments in the field of centrifugal force have provided a new filed of development for the separation of fine particle coal.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 178K]

  • The experimental study on damping fluid bed separation to coarse slime

    PAN Lan-ying,HUI Bing,FENG Jin-tao(School of material,Henan Polytechnic University,Jiaozuo 454000,China)

    The coarse slime that size is 3.00mm to 0.25mm has been respectively separated by columned fluid bed without damping and rectangle fluid bed(TBS) with damping at laboratory.The result indicates that the effection can be improved if the fluid bed holds damping blocks.The reason is analysed in this paper,and the following research direction of damping fluid bed is clear through this experiment.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 193K]

  • The application of FRP wet dust collector in the slime drying system

    LU Jun1,WANG Feng-hong2,KAN Xiao-jing3,WEI Hong-wu3(1.Shenhua Ningxia Coal Group Co.,Ltd.Electrical Taixi Coal Preparation Plant Management Division,Shizuishan 753000,China;2.Zibo Mining Group,Zibo 255000,China;3.Tangshan Tianhe Science and Technology Development Co.,Ltd.,Tangshan 063020,China)

    Introduce the working principle and characteristics of FRP wet dust collector,also recommend the application in coal sludge drying system.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 120K]

  • Technological condition of oil shale under microwave assistant extraction

    ZHOU Guo-jiang,SUN Jing(Resource and Environment Engineering College,Heilongjiang Institute of Science and Technology,Harbin 150027,China)

    Yilan oil shale was researched using CS2-NMP as solvent under microwave assistant extraction with orthogonal experiment of four factors and four levels,and analyze the results of orthogonal experiment.The results show that optimum technological condition was granularity 0.119mm,solvent volume 55mL(mineral sample 5±0.0250g),15min and 600W power,in which extraction rate may achieved 10.9%.Sdvent volume plays a key roll in extracting,granularity came next,then would be power and time,at the same time,for extraction rate,the granularity,the solvent and the power had the remarkable influence.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 186K]

  • Studies on Phanerochaete chrysosporium' sselect breeding and influence to the biodegradation of lignite

    XU Jing-yao,ZHANG Ming-xu(School of Material Science and Engineering,Anhui University of Science & Technology,Huainan 232001,China)

    A mutant of Phanerochaete chrysosporium,which is capable of degrading lignin,was bred by ultraviolet ray irradiation and this mutant strain shows high capability of degrading of lignite.The degradation ratio of original Yima lignite and nitric acid treated Yima lignite by this mutant are 37.6% and 51.62%respectively,whereas those by the original strain are 31.84% and 32.55% respectively.FTIR analyses of the lignite converted product show that its polymerization degree and average molecular weight are both greatly reduced.The content of the functional groups also been altered.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 244K]

  • Experimental research on low ash content and high caloricity slurry coal water mixture

    MO Xiao-lan,SUN Chun-bao,XU Cheng-yan (Department of Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China)

    The feasibility of preparation of high concentration slurry coal water mixture(SCWM) which from Shanxi coal mine was studied.the coal slurry's ability to be a mixture with water and its influencing factors were investigated.The optimum conditions of the preparation of SCWM were obtained under single-factor tests and orthogonal tests.The optimum condition is that the additive amount is 0.16%,the temperature is 35℃,the agitation intensity is 1200r/min,the stirring time is 25min.Under the best condition,the SCWM of Grade 1 which has the properties of the concentration of 69%,the viscosity of 911.30mPa·s and the calorific value of 20.60MJ/kg has been obtained.The SCWM is up to the standards of GB/T 18855-2002 CWM technical.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 249K]

  • Feasibility study on enhancing gasification CWM concentration of Shenhua coal

    DUAN Qing-bing,LIANG Xing,ZHANG Sheng-ju,GUO Zhi-xin,HE Guo-feng(National CWM Engineering & Technology Center,Beijing 100013,China)

    A comparison test was conducted between the high concentration CWM production new process provided by the China National CWM Engineering Technology Research Center and gasification CWM production process provided by the Shanghai Coking and Chemical CO.LTD.Following the workout,the new process can increase the CWM concentration more than 3%.At the same time,the additive used and process between of them were also compared.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 89K]

  • Study on swelling kinetics of Yilan coal in some liquefaction solvents

    XIONG Chu-an1,2,WANG Yong-gang1,CHEN Wei1,LIU Han-fang1(1.School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 100083,China;2.Heilongjiang Institute of Science and Technology,Harbin 150027,China)

    The rate of the swelling of Yilan coal have been measured in starting solvent(STA) and recycle solvent(REC)within the temperature range(25～200℃),and the kinetic parameters of the swelling were calculated based on time profile of volumetric swelling rate.The results show that: the rate of the swelling of Yilan coal in STA and REC increases along with temperature and time,the swelling process of Yilan coal can be illustrated by Case-Ⅱdiffusion,and the activation energies for the kinetics of swelling is 4.18 or 4.22kJ·mol-1 in STA or REC.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 335K]

  • Operating technology and analysis research of scaling-up in shallow bed of circulating fluidized bed boiler

    SUN Xian-bin(Thermal Power Research Institute,Xi'an 710032,China)

    Operating technology of small capacity circulating fluidized bed(CFB)boiler has been analysed,operation mode of shallow bed was suitable for CFB boiler used lignite and high volatile bituminous,it can reduce pressure head of primary air fan and power consumption of fan.For middle capacity CFB boiler,operation mode of shallow bed could induce such problems as agglomeration in dense bottom bed and low of combustion efficiency,in order to reduce carbon content of fly ash and bottom ash,it required to maintain sufficient bed heghit or pressure of wind box.Has technical analysed that operation mode of Shallow bed on circulating fluidized bed(CFB)boiler.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 239K]

  • Experimental research on influence of included minerals on the combustion kinetics of coal charas

    LI Mei (College of Chemistry and Chemical Engineering,North University of National,Yinchuan 750021,China)

    Four different metamorphic degree NingXia coals were selected for this study.The ash content of coal about 30% were obtained with float-sink method and prepared chars in muffle furnace at 900℃,then acid-washed by HCL—HF.The effect of included minerals on char combustion kinetics were investigated by isothermal thermogravimetry under conditions of eliminating the effect of diffusion of internal and external.The change of activation energy of chars and their demineralized chars were calculated.The results showed that the activation energy of bituminous chars higher than its dimineralized chars and the activation energy of anthracite chars lower than its dimineralized chars.It also indicated that included minerals in the bituminous chars hampered combustion and the included minerals in the anthracite chars accelerated combustion.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 371K]

  • Characteristics of CFB boiler ignition coal

    REN Yue-ping1,ZHAO Peng-bo2,GAO Hong-pei2(1.Shanxi International Hongguang Energy Limited,Liulin,China;2.Xi'an Institute of Thermal Engineering Co.,Ltd.,Xian 710032,China)

    Compared the results of five kinds of coal TGA with the lgnition characteristic parameters obtained in the 1MWth circulating fluidized bed combustion test rig,got the ignition point of different types of coal,and analysed the level of difficulty of them,analysed the relationship between the ignition point and its volatile.The results can be used to guide the uesign and operation of large-scale CFB boilers and combustion apparatus.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 374K]

  • CF4 decomposition over Al2O3—the search for optimal reaction temperature

    NIU Xian-Jun,XU Xiu-Feng,FAN Jie(Institute of Applied Catalysis,Yantai University,Yantai 264005,China)

    CF4 decomposition over Al2O3 was carried out by the way of temperature-programmed and constant temperature responses.The CF4 conversion was tested,the structure before and after reaction of Al2O3 was characterized by XRD,specific surface area measurement and SEM-EDS.The conversion of CF4 temperature-programmed decomposition over Al2O3 reached a high level at 700℃.At the isothermal reaction stage,γ-Al2O3 was stable at 850℃,while CF4 conversion decreased sharply with time on stream at 900℃ due to the transformation of un-reacted γ-Al2O3 into inactive α-Al2O3.Based on the results,the optimal reaction temperature for CF4 decomposition over γ-Al2O3 is 850℃.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 381K]

  • Kinetics study on Ni and Cu based oxides for chemical-looping combustion

    CHEN Lei,JIN Jing,DUAN Hui-wei,ZHAO Bing-tao(University of Shanghai for Science and Technology Institute of Power Engineering,Shanghai 200093,China)

    Chemical-looping combustion(CLC) is a combustion technology with inherent separation of the greenhouse gas carbon dioxide.Oxygen carriers with good activity for chemical reaction are very important for its development.A comparative study on chemical kinetics and cycle reaction ability of two kinds of oxygen carriers(Ni/NiAl2O4,Cu/Al2O3) obtained by mechanical mixing is performed.The results show that the apparent activation energy of oxygen carriers by adding Al2O3 is changed and the chemical reaction performance is enhanced.By XRD measurement,the results show that the cycle reaction ability has been improved greatly.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 576K]

  • Neural model predictive control of coal-water mixture boiler

    LI Yi1,ZHANG Xuan2(1.Shanghai University of Engineering Science,Shanghai 201620,China 2.Hebei University of Engineering,Handan 056038,China)

    In response to the coal-water mixture boiler's characteristics of nonlinear,strong coupling and large dead time,a neural model predictive control method has been designed.The model is built by BP neural network,which is obtained by the research of combustion system of coal-water mixture boiler.The network meets the requirement after being trained by optimized data.Rolling optimization arithmetic adopts one step prediction.Simulation results show that the designed control system can meet the requirement of real running and be an effective control method.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 336K]

  • Comparing for tests of a wet-method flue gas desulfuration at different piping arrangements

    YU Jing-mei1,SUN jun-jian,WANG zhan-jun2(1.College of Mechanical Enginearing,Liaoning Technical University,Fuxin 123000,2.Fuxin Power State Limited Liability Companythree phrase of operotion branch factory,Liaoning,Fuxin 123000)

    Wet desulfurization technology is widely used.Study of atomizing nozzle and nozzle performance in the layout of the tower is very important.This paper is often used in wet desulfurization spiral swirl nozzle and nozzle in the tower of a different arrangement of test.Test showed that Helical Cyclone nozzle than the nozzle can form more water,then screw the nozzle in the lower single-layer film and on the same side of the pipeline into the water film minimal damage.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 204K]

  • To reduce the tar content in gas after the electronic capture

    ZHANG Xian-lin1,LI Yong-jun2,ZHU Yin-hui1,ZHANG Xiao-fei1(1.Hebei College of Industry and Technology,Shijiazhuang 050091,China 2.Shijiazhuang Coking Group,Shijiazhuang 050031,China)

    The length of the cycle and the efficient level of tar electricity were key to the long-term and normal production in the gas purification system.High content of tar was harm to the later production.The department of the gas purification system in Shijiazhuang Coking Group researched the tar content in gas couected by the electronic capture and achieved highly desirable results.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 111K]

  • Study of microbial selective flocculation desulfurization of coal

    ZHU Zi-qi,XIE Guang-yuan,XIE Ling-hui,WANG Hong,LIU Jun-zhang,SHA Jie(School of Chemical Engineering and Technology,China University of Mining & Technology,Xuzhou 221008,China)

    The surface characteristic and surface potential of Mycobacterium phlei and coal were studied,as well as the issues of selective adsorption,The study showed that Mycobacterium phlei can absorb the mineral of positive electricity and cause the mineral hydrophobic.On the other hand,it can flocculate with hydrophobic mineral,therefore Mycobacterium phlei could be used in floatation as flocculant or collector,this can be verified according to flotation desulfurization experiment.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 203K]

  • Preliminary study on influence of different preparation method to coal-based activated carbon

    DONG Dan-dan,YANG Sheng-shi2,CHEN Xiao-feng1,WANG Hao-wei1(1.School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221008,China;2.Kunming University of Science and Technology,Kunming 650500,China)

    Introduce processing preparation of pressed activated carbon and indefinite form activated carbon,and then an experimental study of the activated carbon with Taixi coal as raw material was conducted to produce pressed active carbon and indefinite form active carbon with the same gas activation method.At last,find the performance of indefinite from activated carbon is better than activated carbon,and analyze the cause of the different performance.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 264K]

  • The natural disposal experiment of mine water in northwest of China

    LIU Yong1,SUN Ya-jun1,ZHOU Xiao-lu2(1.School of Resource and Earth Science,CUMT,Xuzhou 221008,China;2.Dept.of Environmental Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

    Based on analyzing the characteristic of mine water in Yushenfu mine area,a comparative analysis of eht results of the sandfitter experiments has been done,taking the geology and hydrogeology condition in this area into account,expounds feasibility of the natural disposal method for utilization of mine water.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 190K]

  • Study on the physicochemical properties of desulfurization ash from coal fired power plant

    ZHOU Dong,HAN Bao-ping(School of Environment and Spatial Informatics,China University of Mining and Technology,Xuzhou 221008,China)

    Desulfurization ashes from different coal fired power plant in Xuzhou were studied in three aspects including granularity distribution,content of heavy metals and mineral composing.The results showed that granularity distribution was similar in the two power plants,granularity was mainly under 5 microns,the content of granule above 20microns was more than 98%;The contents of heavy metals tested were all above 1μg/g except Cd,Mn had the highest content above 300μg/g.Most of the heavy metals tested were reliable to enrich in fly ash;The mineral composition differed from the relative content of mullite and calcium sulphate,it was related to the technics and coal used of power plant.The particle morphology of each plants fly ash had distinct differences.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 437K]

  • Characterization and properties of modified coal fly ash as adsorbent for removal of Nickel(Ⅱ) Ions from solution

    ZHOU Xiao-lu1,2,LU Jiang-tao1(1.College of Environmental and Chemical Engineering,Shanghai University,Shanghai 200074,China;2.Department of Environment Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

    The influence factors of the modified fly ash on removal of Ni2+containing in wastewater were discussed.The results showed that the ability of the modified fly ash removing nickel depended on pH,contact time and temperature.When the pH<7,the absorption played a leading role;with the increasing of pH,the precipitation gradually played a leading role.The study of dynamics and thermodynamics showed that: the absorption of modified fly ash on removal of Ni2+ containing in wastewater accord with Bangham adsorption dynamic equation and Langmuir adsorption isotherm,and that squared with the single-molecule layer adsorption theory,also the spontaneous,endothermic process.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 345K]

  • Study on displacement coalbed methane by carbon dioxide injection

    LI Xiang-dong1,2,FENG Qi-yan1,2,LIU Bo2,ZHOU Lai2(1.Jiangsu Key Laboratory of Resources and Environmental Information Engineering,Xuzhou 221008;2.China School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China)

    The adsorption-desorption behavior of carbon dioxide and methane gases in coal samples were experimentally studied,a modeling experiment of carbon dioxide displacing CH4 was accomplished.The results indicate that the adsorption of CO2 is prior to that of CH4 and the desorption rate of CH4 at unit pressure drop in the process of carbon dioxide displacement is obviously higher than that in the process of pure CH4 desorption,the coalbed methane desorption rate at unit pressure drop of coal was increased by 77.7%.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 157K]

  • Experimental study on coal blending coking

    DENG Zhi-wei(Yuncheng Coked coal gas factory,Yuncheng 044000,China)

    The conventional coking and coking tamping test were carried out in 40kg pilot coke oven through three single-species of coal and nine kinds of coal blending.Analyzing and Studying the quality of coke,proposed the best scheme to produce superior coke.

    2009 02 v.15;No.60 [Abstract][OnlineView][Download 77K]



Clean Coal Technology            京ICP备05086979号-19

Website  Copyright © 2019 Clean Coal Technology 
Coal Tower, Hepingli, Chaoyang District, Beijing, China. 100013
Tel:  86-10-87986452 / 010-87986451           E-mail:  jjmjs@263.net