2009年04期目次

  • Research on circular economy development of coal enterprises in Shandong province

    YANG Ji-xian1,LIU Man-zhi2(1.Environmental protection and energy saving Yankuang Group Office,Yanzhou237500,China;2.School of Management,China University of Mining and Technology,Beijing221116,China)

    The development status of circular economy at home and abroad was analyzed firstly.The main practice of circular economy development in Shandong was described.Started from the main problems of economic development of coal enterprises in Shandong,combined with the characteristics of coal enterprises in Shandong,several proposals of constructing circular economy development modes of coal enterprises were put forward.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 178K]

  • Utilization ways of China's coal-bed methane

    MAO Qing-guo1,2,CHEN Gui-feng2,XIE Hua1,ZHAO Lu-zheng2,3(1.School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing100083 China;2.Beijing Research Institute of Coal Chemistry,China Coal Research Institute,Beijing100013,China;3.School of Economics and Management,Beijing University of Chemical Technology,Beijing100029,China)

    The distribution of coal-bed methane resources are first introduced.Then expound some kinds of utilization ways.Analyzed the flow of coal-bed methane power generation system and the advantages as well as disadvantages of generating units.According to examples point out that the power generation is the main way to use coal-bed methane.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 93K]

  • Impact and analysis of filter effects about flotation clean coal of size distribution

    XU Yan1,ZHAO Xin2,MA Zhong-tao2(1.College of Resource and Environment Engineering,Heilongjiang Istitute of Science and Technology,Harbin150027,China;2.Xinxing Coal preparation plan,Qitaihe Mining Industry Clean Coal Group Comp,Qitaihe154600,China)

    Based on low capacity of handing of filtration process system of flotation clean coal and high moisture of products,research on the filtering effect of size distribution of clean coal.Analyze the filtering effects of different filtration equipment,expound the impact of filtration process of flotation cleen coal size and opinions.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 103K]

  • Process practice of fine crushing caking coke washing

    MO Feng-yi(Guizhou Panjiang coal(Group) Co.Huopu Coal Preparation Plant,Panxian553539,China)

    Huopu coal preparation plant has done a large number of process practice according to the characters of fine crushing caking coke,take a series of actions such as roller screening、forced de-medium、decreasing viscosity、filtration aiding dehydration、under-pressure technology to make sure that fine crushing caking coke can be effectively selected,according to this can obtain a better practice process results.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 181K]

  • Deduster reform in dry coal preparation system

    YAN Xue-sheng,ZHANG Min,LIU Qiang,WANG Zhu-liang(College of Energy Resources and Power Engineering,Jiangsu University,Zhenjiang212013,China)

    There are many advantages in dry coal preparation method.However,if the auxiliary dust removal system is not properly selected,large quantity of dusty gases produced will impact severely the operators' health and surrounding circumstances.In this paper,reform is conducted on dust removal system of a coal preparation workshop.Fluidized bed dust removal device and fiber-grid dust removal device are employed.Practical application of the devices indicates that good dust removal effect is obtained and the circumstances inside and outside of the coal preparation workshop are improved greatly.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 126K]

  • Transformation of Φ500 slime water concentration grading cyclone

    CHEN Jian-ping,LIU Xin-guo,YAO Ming-quan(Yanzhou loal Mining lo.Ltd.Jining coal preparation Plant on the 3rd,Jining272072,China)

    According to comparing performance datas of water concentration cyclone in Jisan Washery,transformat in aspects of the feed pressure,cone angle and the length,grinding patience,which not only meet the needs of production,but also greatly reduces the cost.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 113K]

  • The qualitative compare between the reaction heat of coal direct liquefaction and the one of petroleum process

    ZHAO Yuan1,ZHU Xiao Su1,LI Wen Bo1,ZHAO Zhan-bao2(1.Beijing Research Institute of Coal Chemistry,China Coal Research Insititute,Beijing100013,China;2.Jinxi Natural Gas Chemical Industry Co.,Ltd.,Huludao125001,China)

    The complicacy of coal direct liquefaction reaction is recounted in the view of chemical bond.Compare coal direct liquefaction reaction heat with petroleum process reaction heat in the method of analyzing bond energy,and qualitatively explain that the reaction heat of coal direct liquefaction is more than the one of petroleum process.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 151K]

  • Study on properties of white rot fungus degrading model compounds of lignite

    DU Ying,TAO Xiu-xiang,SHI Kai-yi,LV Zuo-peng,LI Yang(School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou,Jiangsu221000,China)

    Begining with the lignite structure,three model compounds of lignite were choosen and effected by white rot fungi.Culture condition and extracellular enzyme activities were optimized.Growth curves of strains were determined to study on the changes of mycelium dry weight and protein content.Extracellular proteins were determined by SDS-PAGE.Research shows that C.Versicolor and Golden Mushroom can grow in presence of model compound.The optimum culture conditions were as follows pH 6.0,carbon-nitrogen ratio 5,Tween 80 at the concentration of 0.1% Catalase activity of C.Versicolor was 0.173mg·ml-1·min-1,polyphenol oxidase etc were produced simultaneously.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 261K]

  • Study on kinetic models of co-gasification of biomass and coal in an atmosphere of CO2

    BIAN Wen,ZHANG Ke-da,WEN Fang,LIANG Da-ming, DONG Wei-guo,WANG Peng(Beijing Research Institute of Coal Chemistry,China Coal Research Institute,Beijing100013,China)

    The main kinetic models of char gasification were reviewed,The gasification data of two chars were used in these models,correlated coefficient was used to evaluate the models.The results indicated that unreacted shrinking core model was more suitable for mixed coke gasification behavior simulation,and calculated the corresponding activation energy.By comparing the activation energy data found that a certain proportion of coal and sawdust mixed could accordingly improve its reactivity.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 167K]

  • Optimization of process conditions on shaped coal gasification technology in ammonia

    PENG Zhan-ying,YAN Xin(Hunan Chemical Industry Vocation and Technology College,Zhuzhou412004,China)

    Shaped coal gasification has accounted for 60% in coal head ammonia production of China,shaped coal gasification has different characteristics from block coal gasification,therefore,systematically summarizing shaped coal gasification technology has important significance to guide practical ammonia production.This paper has systematically summarized aspects of shaped coal gasification technology from the important significance,from gasification characteristics,from process optimization,and from deficiency and prospects for development in ammonia production.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 121K]

  • Speed on the impact of preparation coal-oil slurry evenness

    ZHAI Jin-guo,ZHANG Xu-wen,LAN Jan-hua(Shanghai Research Institute of Chemical Industry,Shanghai200062,China)

    Preparation of coal-oil slurry is the key to stable operation of coal liquefaction process.This article focused on the internal flow diagram of coal-oil slurry preparation plant in the case of changing the speed.Initially defined the best speed in test condition according to comparison of internal flow lines、mixing uniformity and determination of time spent in uniform mixture.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 184K]

  • Empirical formula of modified coefficient about the CWS's rheological relation

    SANG Qian-feng,DUAN Yu-feng,CHEN Liang-yong,LIU Meng(Thermal Engineering Research Institute,Southeast University,Nanjing 210096,China)

    The research of rheological property is the premise and basis to determine CWS's(coal-water slurry) flow rules in the pipeline.In this article,there are some experimental researches about rheological property to cws made from yanzhou coal.Based on the rheological relation obtained by the methods of pipe-flow and rotation viscometer,made some contrasts and analysis,and the experimental data obtained by the method of pipe-flow would regarded as the standard one,then made some amendments to the results obtained by the method of rotation viscometer.For the first time,got a empirical formula of modified coefficient about the CWS's rheological relation.This way realized a purpose that to get the CWS's rheological relation that can fit the technical application well from the method of rotation viscometer which can be simple operated.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 181K]

  • Effect of reduction parameters on the iron catalyst performance for fischer-tropsch synthesis

    TANG Qing-jie1,2,FAN Shao1,LIU Bao1,WANG Yi-hui1,XU De-ping1,WANG Yong-gang1(1.China University of Mining and Technology Beijing,Beijing10083,China; 2.Hebei Northern Institute,Zhangjiakou075000,China)

    The effect of reduction parameters on the iron catalyst performance were investigated in slurry reactor in this paper.The results showed that it was feasible to improve the proportion of CO/H2 for the selectivity of olefin;and It was favorable to the activity of Iron catalyst by improving space velocity of Syngas,but it cause the decrease of olefin selectivity;The activity of catalyst can be improved by improving reduction temperature,but the carton deposition appeared for excessively high temperature,it lead to the decrease of catalyst activity,it was suitable for 210℃～260℃ for reduction temperature.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 220K]

  • Study on lignite pyrogenation by microwave

    MA Hong-zhou,WANG Yao-ning,LAN Xin-zhe(School of Metall.Eng.,Xi'an Univ.of Arch.&Tech.,Xi'an710055,China)

    Study on lignite pyrogenation by microwave,and the results show that the temperature of lignite can be heated to 800℃ by microwave heating.So the microwave heating is an efficient available way which can produce useful components with high concentration in the furnace gas.The final solid product by pyrolysis is highly similar to the ingredient of semi-coke.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 117K]

  • Research development of reaction theory limestone directly vulcanization in coal burning sulfur solidify

    CHEN Lie-rong1,GE Ling-mei2,ZHOU An-ning2(1.College of chemistry and chemical engineering,Linyi Normal college.Linyi276005,China;2.Department of chemical engineering,Xian Science and Technology University.Xian710054,china)

    At elevated pressures under PFBC conditions and in O2/CO2 coal combustion,direct decomposition of limestone has been restrained.CaCO3 and SO2 react directly.This paper reviewed reaction theory limestone directly vulcanization.The effects of temperature,total pressure,the partial pressure of CO2,SO2 and O2 on direct sulfation were presented in this paper.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 121K]

  • Comparison of furnace heat transfer with adding Ex-arch in stoker boiler

    YAO Zhi-peng,ZHANG Zhong-xiao,ZHU Ming,ZHOU Tuo(Department of Power Engineering,University of Shanghai for Science and Technology,Shanghai200093,China)

    The combustion and heat transfer characteristics of a 35t/h and a 10t/h stoker boiler with the arches fit into have been analyzed and compared with those previously.In comparison,combustion has been intensified,the chemical and mechanical incomplete combustion heat loss has been reduced,and therefore the boiler thermal efficiency and the flue temperature at furnace outlet have been raised.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 137K]

  • Application of neural network model with partial least-squares regression on predicting slagging of coal-fired boiler

    SHAN Yan-jiang1,DI Li-mulati2(1.Production Department of Heat Supply Boiler Inc.of Oil Field in Xinjiang,Kelamayi834000,China;2.Maintenance Crew of Heat Supply Boiler First Filiale Inc.of Oil Field in Xinjiang,Kelamayi834008,China)

    Partial least-squares regression method can resolve serious multicollinearity problems among variables.A model for predicting slagging of coal-fired boiler based on the combination of neural network and partial least square method is proposed in oil field of Kelamayi.The factors affecting the slagging of coal-fired boiler are analyzed by means of partial least square method to extract the most important components so that not only the problem of multicorrelation among variables can be solves but also the amount of input dimensions of the neural network can be reduced.Besides,the application of neural network helps to solve the problem of non-linearity of the model.The results indicate that the prediction values approximate to the real values,the proposed model has higher precision than those models based on neural network method or partial least square method only.The model plays an important guiding role in improving operating safety of coal-fired boiler.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 120K]

  • The study of high-voltage pulse supplying electricity of ESP

    HE Zhi-qiang,QI Li-ming(Inner Mongolia Electric Power Science Research Institute,Huhhot010020,China)

    The discorona is the main reason for the declining in the dust removal efficiency when the ESP dealing with high resistivity dust and the power consumption of ESP increase because of a large proportion of ineffective energy.The high-voltage pulse supplying can effectively eliminate the damage of discorona,increase the dust removal efficiency and lower electrical energy consumption at large amplitude.The experiment indicate that the smoking density in the pulse supplying reduced 70.7% and power consumption reduced by 61.5% than the spark following.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 134K]

  • Development progress and characters of drop-tube furnace technology

    MA Zheng-zhong,JIANG Fan,XU Xiang,XIAO Yun-han(Chinese Academy of Sciences Key Laboratory of Advanced Energy power(Institute of Engineering Thermophysics),Beijing100190,China)

    Discuss the necessity and importance of studying the coal reaction dynamic,analyze the characters of an important laboratory device drop-tube furnace in above reaction,summarize development progress of drop-tube furnace which is considered have a wide application prospect at home and abroad.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 155K]

  • Study on the specific area and porous structure Of Daqing oil shale and semi-coke

    ZHAO Na,WU Guo-guang,WANG Pan-cheng,MIAO Zhen-yong,LI Ping,WANG Zhi-hua(School of Chemical Engineering and Technology,China university of mining & technology,Xuzhou221008,China)

    N2 adsorption isotherms at the low temperature were obtained by auto-adsorption analyzer.The absorption isotherms of Daqing oil shale and semi-coke samples are all type II isotherms,which indicates that those samples consist of continuous and complete system of pores.The diameter of pores ranges from molecular scale to upper limit scale(contrast to normal one).There are similar in the specific surface area and the pore size distribution of different samples that is the profiles turn up at the initial part and small peaks of curves show up in the range of diameters between 40 and 50.Under the experimental condition,the specific area and volume of pores are all increased as the final temperature of dry distillation increasing.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 145K]

  • Research on activated coke regeneration in liquid phase and fractal characteristics

    XIONG Yin-wu1,LIANG Da-ming1,WU Tao1,ZHANG Ke-da1,BAI Ya-na2(1.Beijing Research Institute of Coal Chemistry,CCRI,Beijing100013,China; 2.School of Chemistry and Environment Engineering,China University of Mining & Technology(Beijing),Beijing100083,China)

    Regeneration with Inner Mongolia activated cokes(ACs) after desulfurizing was conducted in tap water,ammonia、sodium bicarbonate and sodium hydroxide solution respectively.Using ACs characteristics of fractal geometry to study the relationship of fractal dimension and desulfurization.The results show that regeneration rate and desorption efficiency of ACs in tap water or weak base solution are slower than those in strong base.Using sodium hydroxide solution not only speeds up the desorption rate,but also makes complete level of desorption up to 97%.ACs has the characteristics of fractal geometry,and its fractal dimension has connection with the desulfurization trend.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 181K]

  • Preparation process of activated carbon with Heilongjiang blended coal

    SHAO Jing-jing1,GAO Dan2,XUE Hong-yan1,XIONG Chu-an1,XU Ge-lian1(1.College of Resource and Environment Engineering,Heilongjing Institute of Science and Technology,Harbin150027,China;2.Heilongjing Institute of Science and Technology Library,Harbin150027,China)

    In order to find optimal raw material ratio and preparation process of HSAAC(high surface area activated carbon) with Heilongjiang coal,studied preparation of activated carbon by blended coal from Qitaihe and Yilan,the factors of the absorption value of I2,such as ratio mixture of coals,ratio of alkali to carbon,activated temperature,activated time by the method of orthogonal design.The study features the best condition: Qitaihe and Yilan coal ratio 1,alkali-carbon ratio 6,activated temperature 850℃,activated time 120min.In this condition the absorption value of I2 and BET surface area respectively reached up to 1973mg·g-1 and 1735m2·g-1.This disquisition has definite practical significance for open the applied realm of Heilongjiang coal.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 201K]

  • Study on the performance of coal water slurry additive made from papermaking waste liquor

    ZHANG Xian-lin,LIU Jian-qiu,FU Cui-yan,ZHENG Yi-rong,ZHANG Su-qing(Hebei Vocational and Technical College,Shijiazhuang050091,China)

    Based on analyzing the advantage of coal water slurry(CWS) and using condition of coal water slurry discuss the genaral development of coal water slurry additives and the possibilities that use papermaking waster water making additives.On the basis of experimental study find out various factors which play a role in the impact of coal water slurry additive.Put forward the best allocation of coal water slurry additives and conditions of use.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 120K]

  • Comparison and application prospects of coal mine ventilation air methane treatment technology

    ZHOU Xian1,2,JIANG Fan1,LV Yuan1,2,XU Xiang1,XIAO Yun-han1(1.Chinese Academy of Sciences Key Laboratory of Advanced Energy power(Institute of Engineering Thermophysics),Beijing100190,China;2.Graduate School of Chinese Academy of Sciences,Beijing100049,China)

    Emissions of ventilation air methane(VAM) from all the mines around the world is considerable.It is not only a waste of energy but also exacerbating the greenhouse effect.This article summarizes and compares different technologies to treatment and utilize the VAM.Economic and environmental prospects of the technologies is described.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 137K]

  • Application of micro-flocculation sand filtration technology in mining area's domestic sewage reuse

    QIN Shu-lin1,LI Xiang-dong2,JIN Hai-feng1,LI Chao-hui1(1.Hangzhou Institute for Environmental Protection,CCRI,Hangzhou311201,China;2.School of Environment and Spatial Informatics,CUMT,Xuzhou221008,China)

    Micro-flocculation continuous sand filtration were used to treat mining area's domestic sewage.The results indicated that the size of filter material was bout 0.8~1.0mm;the depth of sand filter was about 1.0~1.2m;sand circulation velocity was about 2~4mm/min;PAC dose was about 20~25mg/L,the effluent-SS was less than 5mg/L,the removal rate arrived at 94.5%.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 85K]

  • Quantum chemistry calculation and experimental study on high-temperature melting point ash mullite

    CHEN Yu-shuang,ZHANG Zhong-xiao,LI Jie,GUAN Rong-qing,WU Xiao-jiang,YAN Bo(Department of Power Engineering,University of Shanghai for Science and Technology,Shanghai200093,China)

    Mullite is one of the main mineral compositions in high-temperature melting point ash.The chemistry,reactivity sites and bond-formation characteristics of mullite surface are investigated by using quantum chemistry methods.The results show that the highest occupied molecular orbits(HOMO) of the mullite cluster in the coal ash mainly consists of oxygen atoms O7,O12 connected with the silicon atom,with relative high energy level.Its chemical activity is stronger than the lowest unoccupied molecular orbits(LUMO) of the mullite cluster.Therefore It is prone to combine with electron acceptor,for example Na+,Ca2+ and It is difficult to combine with electron donor.At the same,the result shows that mullite surface chemical activity is Al1+O13<Al8+O13<Al1+O12<Si6-O7<Al8+O14<Si6-O12,therefore the bond in the Al1+O13,Al8+O13 is so easier broken that lattice is recombined.Quantitative calculation gives a good explanation of blending to reduce the high melting point of coal ash from micro aspects.theoretical calculation has been proved well by experimental.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 251K]

  • Experimental study on the optimization condition of adsorbing sulphate by synthesized zeolite with fly ash

    LIU Hai-cheng,LIU Jian(Department of Environment and Municipal Engineering,Henan University of Urban Construction,Pingdingshan467044,China)

    Zeolite was synthesized with fly ash.The synthesized and optimization conditions of adsorbing sulphate by the synthesized zeolite with fly ash were researched by the single factor experiment and the orthogonal design.The results showed that the optimum processing parameters was dissolving NaOH to fly ash mass ratio 1,melting temperature 400℃,melting time 1h,hydrothermal temperature 60℃ and hydrothermal time 4h.The main and secondary factors and level effecting sulfate removal rate were zeolite size 80 mesh,stirring time 45min,zeolite dosage 10g·L-1 and solution pH value 5.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 145K]

  • Process system and operation analysis of oil sand fluidized bed combustion

    DENG Jia-ying1,ZHOU Jing-hua2,LIU Jian-guo3,JIANG Xiu-min3,MA Yu-feng2,LI Ji-wu2,WANG Jin-jun2 (1.Yingkou City,Liaoning Province,Boiler and Pressure Vessel Inspection Institute,Yingkou115002,China;2.Shengli Oilfield Shengli Power Plant,Dongying257087,China;3.Machinery and Power Engineering Institute,Shanghai Jiaotong University,Shanghai200240,China)

    Put forward a method which takes differential density circulating fluidized bed combustion technology for treating oily sludge.This is a clean way of transforming oily sludge into energy involving relatively low operating cost and diminishing the cost of oil exploitation;simultaneously realizing peril-free treatment of pollutants,reduction,large-scale,resource-based processing.Give a detailed account of technical process,skill feature and design parameters as well as operation features of a 145t/d fluidized bed combustion boiler.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 207K]

  • Recovery of Ammonia from coking products

    WANG Fen,ZHOU Min (School of Chemical Engineering and Technology,China University of Mining &Technology,Xuzhou221008,China)

    After the primary cooling of coke-oven raw gas,a small part of ammonia presents in the residual ammonia water,while the majority remains in the gas.Two parts of ammonia should be recycled.This paper introduces various recycling processes of ammonia in the primarily cooling gas and the residual ammonia water,as well as their advantages and disadvantages.The uses of these processes are also described briefly.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 95K]

  • Progress of characterization methods on coal spontaneous combustion

    CHEN Peng1,XU Hong-ying2,LI Li-ye1,CUI WEN-quan1,LIANG Ying-hua1(1.College of Chemical Engineering and Biological Technology,Hebei Polytechnic University,Tangshan063009,China; 2.Metallurgical Department of Tangshan Vocational College Science and Technology,Tangshan063001,China)

    Introduce the research methods and characterization of coal spontaneous combustion,based on coal-oxygen compound mechanism of coal oxidation,review various principles and researxh progess of coal self-ignition study.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 112K]

  • Analysis of international market developing of coal enterprises based on e-commerce

    ZHANG Zhen-shan,WANG Li(School of Economics and Management,Heilongjiang Institute of Science and Technology,Heilongjiang150027,China)

    Economic crisis has led to oversupply of the coal products.China's coal exports is feasible through analyzing comparatively coal quality、prices of home and abroad.Meanwhile,in order to further enhance the competitiveness of coal enterprises,reduce costs,find out traditional problems of coal export,which can be solved by the establishment of e-commerce in coal enterprises along with increasing their international competitiveness.

    2009 04 v.15;No.62 [Abstract][OnlineView][Download 145K]



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