2009年03期目次

  • Current development utilization situation and development suggestions of coal-bed gas

    YU Jun-jie1,ZHU Ling2,ZHOU Bo1,SHAO Li-nan1,HE Xu-wen1(1.School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing100083,China;2.Department of Environmental Engineering,Beijing Institute of Petrochemical Technology,Beijing102617,China)

    China has rich coal bed gas resource and its development and utilization is at the starting stage.Although the quantity of coal mine methane extraction is increasing each year,the extraction rate is still relatively low.The utilization of coal bed gas is focus on the traditional area,such as civil gas,industry fuel,chemical application and power generation,and some new area as clean development mechanism projects.The paper concluded the current situation of coal bed gas development and utilization in China,analyzed the existing problems in the development of coal bed gas industry,and then put forward some suggestions based on the above analysis.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 360K]

  • The production cost and solving countermeasures of China's coal enterprises

    ZHANG Ru-gen,WANG Xin(Heilognjiang College of Science and Technology school of Ewnomics and Maragement,Harbin150027,China)

    This paper quantified the cost of coal production,established the coal production cost model,used the national coal production-related data for empirical analysis,and obtained the forecast results.Finally put forward the countermeasures to solve the production-cost problem of China's coal enterprises.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 215K]

  • Application of FCMC-type cyclone microbubble flotation column in Xinjiang

    SHA Jie,XIE Guang-yuan,LIU Jun-zhang(College of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou221008,China)

    Introduce the present situation of coal industry in Xinjiang,and expound the working principle,structure and application advantage of FCMC-type cyclone microbubble flotation column.Make a comparison about performance between flotation column and flotation machine.Finally,discuss the application of cyclone microbubble flotation column in coal separational industry in Xinjiang.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 390K]

  • Study on the flotation reagent

    KONG Xiao-hong1,KANG Wen-ze1,CAO Gang2(1.College of Resource and Environmental Engineering,Heilongjiang Institute of Scinece and Technology,Harbin150027,China;2.College of Materials Science and Engineering,Heilongjiang Institute of Scinece and Technology,Harbin150027,China)

    The coal sample from Taoshan was studied as the mian object,order to investigate the effection of different flotation systems on coal flotation effect.The experiments were conducted under different conditions,such as different proportions,quantities and ways of adding collector and foaming agent.The results showed that the flotation performance was optimum,when the collector and frother of roportion mass was 4∶1,total mass was 1.70kg/t and adding them into floation system ofter being mixed,the best system flotation reagent was determined.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 247K]

  • Exploration test of gringing-floating with medium density level of feed coal

    TIAN Xiao-ming1,GUO De2,ZHANG Xiu-mei2,XU Jian-jun3,GUO Ya-li3,WANG Yun-lai3(1.Jinyan Power Coal Chemical.Co.,Ltd.,Xiaoyi032308,China;2.North China Institute of Science and Technology,Sanhe065201,China;3.Tangshan Guohua Technology Co.,Ltd.,Tangshan063020,China)

    Medium density level(1.40~1.60kg/L and 1.60~1.80kg/L)of feed coal were grinded respectively,then carry out screening,floating,flotation test,explore the possibility in increasing clean coal yield of coal washery,in order to make full use of coal resources.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 1163K]

  • Practice of technical innovation in Liangbei coal preparation plant

    SHAO Yan-xiang,HUANG Wen-feng,DOU Wei,YANG Zhen(Xinlong Xuchang,Henan Province Mining Co.,Ltd.,Yuzhou461600,China)

    Discuss the issues exist in coal dressing technology according to analyzing characteristics of Liangbei coal,productivity and efficiency have improved sharply after carrying out the technical innovation,achieved the purpose of saving energy and reducing consumption,this innovation played a demonstration effect in Zhengzhou and Xuchang coal processing.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 200K]

  • The application of belt cold bonding technology in coal washery

    LIU Xin-guo,CHEN Jian-ping,LIU Guo-dong(Yanzhou Coal Mining Co.,Ltd.Jining Coal Preparation Plant on the 3rd,Jining272072,China)

    Belt conveyor,as a convenient and efficient transportation equipment,has come into general application in coal washery.The quality of connection between adhesive tape has a direct impact on the use of belt conveyor.The technology of cold bonding with the characteristics of high strength,long life,joint formation,easy to operate,and low labor intensity is widely used in belt conveyor.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 216K]

  • Study on coal structure after removal of the mineral matter

    LI Xin,LING Kai-cheng,HE Min,SHEN Jun,JIA Wei(College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan030024,China)

    Shenhua and Yanzhou coals were treated with solutions of HCl and HF in order to detach the mineral.The raw and treated coals were burmed into ashes at 815℃ in oxidizing atmosphere.The mineral composition and coal structure were studied by FT-IR.The results show that the acid cure can remove most mineral of coal.The mineral composition of two kinds of coal are mainly quartz、anhydrite、calcite、kaolinite and mineral of iron,but the quantities are differdent.After treatments,the oxygen functional groups of coal chemical structure were changed.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 360K]

  • Component analysis of products from brown coal oxidation

    SUN Xiao-man1,ZHANG Jing-hua1,QIN Chun-mei1,HOU Wei1,QI Lu1,2(1.CITIC Guo'an Mengguli New Energy Source Technology Company,Limited,Beijing102200,China;2.College of Chemistry and Molecular Engineering,Peking University,Beijing100871,China)

    Brown coal was extracted by petroleum ether and chloroform by stages,the residues after extraction were oxidized with NaOH and H2O2,the extraction of products of oxidation were same to coal,GC/MS was used to analyze the components.The results show that 46 compounds are identified from petroleum ether extraction of coal.The main constituents are hydrocarbon(80.2%) and esters(14.3%).Comparing to coal,44 compounds were identified from petroleum ether extraction of oxidation coal.The relatively content of alkyls(43.3%) decreased,but esters(18.9%),alcohols(15%),aroma hydrocarbons(6.5%),hydroxybenzene(6.1%),alkene(4.6%),acids(2.2%) increased.It indicted that other available chemicals can be obtained from coal oxidation.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 208K]

  • CF4 decomposition over P/Al2O3 without water and the determination of active species

    NIU Xian-Jun,XU Xiu-Feng,FAN Jie,LI Ji-sen,GUAN Ren-gui,QI Shi-xue (Institute of Applied Catalysis,Yantai University,Yantai 264005,China)

    The temperature-programmed reaction and isothermal reaction of CF4 decomposition over P/Al2O3 without water was carried out.P/Al2O3 before and after reaction were characterized by using XRD and BET.surface area measurement.CF4 conversion decreased quickly because the un-reacted γ-Al2O3 was transformed into α-Al2O3.After Al2O3 was modified with P,the formation of α-Al2O3 was inhibited by the protective layer of AlPO4 and consequently the structural stability of γ-Al2O3 were improved,but the de-fluorinated activity of P/Al2O3 did not increase evidently due to the decrease in Al2O3 content in P/Al2O3,it is demonstrated that Al2O3 is the active species in P/Al2O3.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 260K]

  • Dynamics research on preparation of activated carbon from blended coal

    SHAO Jing-jing,ZHONG Nai-liang,XUE Hong-yan(College of Resource and Environment Engineering,Heilongjing Institute of Science and Technology,Harbin150027,China)

    This paper studies on dynamics of carbonization and activation of preparation from activated carbon by blended coal from Qitaihe and Yilan,under the two type of coals as 1/1 ratio mixture,ratio of alkali/carbon of 6/1,activated temperature of 850℃,activated time of 120min.The results show the reaction rate of burn-off B is first-order reaction used KOH in 800~950℃.According to Arrhenius equation,it is calculated that the apparent activation energy of carbonization-activation reaction is 101.4032 kJ·mol-1,and the pre-exponential factor is 3.1382×104.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 471K]

  • Study on the influence of coal's granularity and metamorphic grade on emission of particulate during layer combustion process

    WU Peng1,YANG Shou-ming2,LV Yu-ting1,ZHOU Guo-jiang1(1.Heilongjiang Institute of Science and Technology,Harbin150027,China;2.Tangshan Shenzhou Machinery Limited Company,Tangshan063000,China)

    Fine particles matter was tested during coal combustion in the layer combustion boiler by the laser analyzer,its emissions rules of different metamorphic grade and granularity coals were studied during combustion.The experimental results show that the quantity of fine particles matter increased with granularity of coal decreasing,and the quantity of fine particles matter released gradually reduced with volatile content of coal decreasing,the same as cohesiveness increasing.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 385K]

  • Catalytic combustion promoter for pulverized coal injected into a blast furnace and its industrial application

    LUO Ye1,SUN Si-ping2,XU Lei2,GUO Jia2,QIN Yin3,LI Peng3(1.School of Science,Wuhan Institute of Technology,Wuhan430073,China;2.Key Laboratory for Green Chemical Process of Ministry of Education,Wuhan Institute of Technology,Wuhan430073,China;3.Guangxi Qingrong Refractory Materials Co.Ltd.,Qinzhou535000,China)

    The effects of some inorganic chemicals such as manganese dioxide,alumina oxide and calcium carbonate on catalytic combustion of pulverized coal injected into a blast furnace were investigated.The effects of the new promoter containing these chemicals on the ignition temperature and the combustion efficiency were studied.The catalytic combustion mechanism of these inorganic chemicals was discussed.Industrial applications of this catalytic combustion promoter for pulverized coal injection of the blast furnace were also proposed.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 219K]

  • Study on the influecing factors of thermal environment for desulfurization in the chain furnace

    MA Xiao-yan,DONG Ping,LI Xiao-mei,JIANG Chuan-li,KONG Xiao-hong(Resource and Environment Engineering Dept.,Heilongjiang Institute of Science and Technology,Harbin 150027,China)

    Through analyzing the combustion process and the releasing characteristics of sulpher dioxide in the chain furnace,master the thermal environment in the chain furnace.Analyze the thermal stability of calcium sulfate in different thermal environments,the results show that calcium sulfate also can be decomposed under relative low temperature,sulphur dioxide releases once more,reduce the rate of desulfurization.In this article,propose the improvement measure for this situation of the low rate of desulurization in the chain furnace.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 249K]

  • Study on CO2 capture technologies used in flue gas of coal-fired power plant

    LI Xin-chun(North China Power Engineering(Beijing)Co.,Ltd.,Beijing100120,China)

    Carried on the introduction and the analysis of several kinds of CO2 capture technologies at home and abroad.According to the characteristics of the flue gas of coal-fired power plant,the selection conditions of CO2 capture technologies used in flue gas were proposed.Hydramine method that is fit for flue gas of coal-fired power plant is commended.On the base of it,give the material suggest in the selection of the absorbent of multi-hydramine and selecting the technics.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 398K]

  • The analysis of suction-wind voltage-operated autoignite coke oven

    JU Cai-xia1,LI FENG-gang2,SUN De2,LI Chang-hai3 (1.Department of Chemistry and Chemical engineering,Zaozhuang University,Zaozhuang277160,China;2.School of Chemical Engineering,Changchun University of Technology,Changchun130012,China;3.Binzhou University,Binzhou256600,China)

    Introduced a new type of semi-coke production of special equipment—the structure characteristics、principle of production and process flow of a sequence of vertical suction-wind voltage-operated autoignite coke oven were introduced.Then analyzed this coke oven.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 310K]

  • Application of HPF method in coke oven gas desulfurization process

    ZHANG Xian-lin1,ZHU Yin-hui1,LI Yong-jun2(1.Hebei College of Industry And Technology,Shijiazhuang050091,China;2.Shijiazhuang Coking Group,Shijiazhuang050031,China)

    Introduce the application of HPF method in coke oven gas desulfurization process,H2S strength can be reduced to 50mg/m3 after desulfurization.Using ammonia as alkali source without additional alkali,Plate-and-Frame filter press,not consuming steam,running low-cost operating environment,and has obvious economic benefits.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 66K]

  • Study on the coke oven with the type of double-layer heel tap charing room

    GONG Zhi-jian,LIANG Peng,FANG Zhao-ying,JIN Ying(School of Chemical and Environmental Engineering,Shandong University of Science and Technology,Qingdao266510,China)

    The technology of formed coke production is one of the clean coal technology.The key point is the structures and characteristics of formcoke charing oven.Designed a foracoke charing oven with the type of double-layer heel tap charing room and carried out a detailed research on its structure and characteristics in cognizance of the non-caking and weak-caking coal.This oven can improve the quality and productivity of formed coke production as well as reducing environmental pollution owing to reasonable processing、good quality of formed coke、high thermal efficiency、environmentally friendly.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 263K]

  • Study on the promoting action of salt slurry to calcium-based desulfurization agent

    LI Xiao-mei1,MA Xiao-yan1,NIU Chun-mei2(1.Resource and Environment Engineering Dept.,Heilongjiang Institute of Science and Technology,Harbin150027,China;2.Daqing Technician college,Daqing163000,China)

    Using industrial waste-salt slurry as additives to adjust calcium-based desulfurization agent,carry out the desulphurization experiment by ZCS-1 intelligent sulfur instrument.The results show that salt slurry additives can improve the desulphurization ratio of calcium-based desulfurization agent,the reasonable quality ratio is 8∶1.The analysis by SEM shows that the adjustment can improve pore distribution of desulphurization agent particle,The superficial microscopic appearance of desulphurization agent particles have been changed,so that can improve the desulphuriztion performance.The study discoveries that the main compositions in salt slurry not only change the microscopic structure,but also have the function of desulphurization.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 351K]

  • Development of coal dust additive OT—MF—5

    XIAO Guang-tao,ZHANG Jun-feng(Foshan Outao Inorganic Materials Co.,Ltd.,Foshan528031,China)

    Introduce the main characteristics of coal dust additive OT—MF—5,research the key features of this additive at the process of grinding coal according to coal-pulverizing experiment.The results show that adding a small amount of additive can significantly improve the powder content,short the granding time,increase the production.This effective technical measures which can reduce the production costs have broad market prospects.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 421K]

  • Improvement of Fe2O3 determination in ash

    LIU Xiang-yun(Guizhou Supervision and inspection institute of product quality,Liupanshui553001,China)

    Make an attempt at improving operating steps of coal analytical standard according to the analysis results of standard coal.Finally get the satisfactory and accurate results.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 63K]

  • Relationship between fractal structure of grain-size distribution of backfill gangue and property of gangue spontaneous combustion

    ZHU Li-hua,XU Feng(School of Safety Engineering & Technology,Heilongjiang Institute of Science & Technology,Harbin150027,China)

    In order to research the effect of the grain-size distribution of coal gangue on its spontaneous combustion,the grain-size characteristic of coal gangue is analyzed by using the fractal theory,and the spontaneous combustion property of coal gangue of the different grain-size distribution is investigated based on the experiment in which the temperature rise rate of the coal gangue in oxidation process is determined.The results show that the coal gangue discrete material possesses fractal structure feature,and its temperature rise rate in oxidation process(R) increases gradually with the increase of fractal dimension of the grain-size distribution(D).Meanwhile,the quantitative equation between R and D is put forward.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 185K]

  • Study on the IR spectra of inhibitor effect of insulation material for preventing spontaneous combustion of coal

    XU Hong-feng,WU Guo-guang,ZHANG Yong-jian,MENG Xian-liang,WANG Guang-you(School of Chemical Engineering and Technology,China University of Mining&Technology,Xuzhou221008,China)

    An effective method for preventing spontaneous combustion of coal is to cover oxygen insulation material on coal stockpiles.an organic oxygen insulation material which had been prepared was covered over the surface of coal stockpiles.Putting in atmosphere over some days,the coal covered under the material was analyzed by IR spectra and was compared with the uncovered coal and fresh coal.The results have shown the amount of oxidized functional groups of coal increased with the oxidation reaction.Also,the peak area of oxidized functional groups of coal covered with oxygen insulation material was further less than the one of uncovered coal,but was almost same as the one of fresh coal.So it was concluded that the obvious oxidation reaction happened during the uncovered coal and the coal covered with the material hardly have any oxidation reaction.Therefore,the oxygen insulation material can insulate oxygen and prevent spontaneous combustion of coal.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 180K]

  • Study on the removal of NH3-N from the ammonia water in AS process using fine chemicals

    LIU Rui,WANG Guang-hua,LI Wen-bing,LI Min,ZHANG Jun-qiu,DONG Xin(College of Chemical Engineering and Technology,Wuhan University of Science and Technology,Wuhan430081,China)

    The purpose of this study was to choose a fine chemical to efficiently remove ammonia nitrogen from the ammonia water in AS Process,which provides a new available approach to treat coking wastewater.The experiment adopted "Air Stripping and Adsorption" to remove ammonia nitrogen from the ammonia water,and studied the reaction temperature(T/℃),pH,the time of stripping(t/min),the dosage of the fine chemical,and so on.Got the optium reaetion condition,improved the removing effiency of ammonia and nitrogen provide a new effective way to treat the Coking wastewater.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 233K]

  • The preliminary research on coal-bed gas bioconversion

    ZHOU Sheng-fang,TAO Xiu-xiang,HOU Tong,MA Qiang(School of Chemical Engineering and Technology,China University of Mining & Technology,Xuzhou221008,China)

    Gives an introduction to the research progress at home and abroad on methane degradation by microorganism and its theoretical feasibility,as well as the advantages of new treatment technology on gas by bioreactor.Moreover,it was found from the discussion on conversion of methane to methano by methanotroph that this strain has potential application value in gas biodegradation.Thus,on the basis of current studies and experiments,suggestions for future studies were given.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 116K]

  • gray theory on self-ignition prediction on fully mechanized top-coal caving face

    HUANG Yu-sheng(Department of Modern Technology Library,Henan Polytechnic University,Jiaozuo454003,China)

    Having analyzed the density and concentration of CO of one coal mine over a period of time,has established mathematic model on coal self-ignition by using gray prediction predication theory.The application of the theory can help predict when the self-ignition may occur in great accuracy and meet the real demand,it provides an effective method to prevent the disaster of self-ignition of coal.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 181K]

  • Application of support vector machine in classification of fly ash

    CHEN Zu-yun1,2,YANG Sheng-qiang2,WU Chang-fu1(1.School of Environmental and Architectural Engineering,Jiangxi University of Science and Technology,Nanchang341000,China;2.School of Safety Science &Engineering,China University of Mining and Technology,Xuzhou221008,China)

    For the one-sidedness of classification of fly ash in the past,the chemical composition and physical properties related to the quality of fly ash are choiced as the feature vectors.Then,classification of fly ash is proposed based on support vector machine at this paper.The result shows that the SVM method is not only simple in structure,but also has markedly improved in technical performance and generalization ability,especially compared with the neural network.It reflects more comprehensive the activity of fly ash,and lays a foundation for the utilization of fly ash so as to optimize the distribution.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 500K]

  • Effect of Pb、Zn on soil urease activity during wheat growth

    ZHANG Shuang,XIAO Xin,BAI Xing-lei,JIA Hong-xia(Jiangsu Key Laboratory of Resources and Environmental Information Engineering(China University of Mining and Technology),Xuzhou221008,China)

    The effect of Pb、Zn and their conpound on urease activity in both root-zone and non root-zone soil during wheat growth were studied.The results showed that the response of soil urease activities to Pb、Zn during wheat growth were different.The urease activity changed obviously at the early growth period as stressed by Pb or Zn alone and increased at the late growth periods(heading stage,maturity stage).The effect of Pb and Zn interactions on urease activity transformed from activation into inhibition as the wheat growing up.Urease activity of wheat root zone was higher than that of wheat non-root zone.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 271K]

  • Control system of wet-process synthetic leather based on Profibus

    ZHANG Hui-rong,WANG Guo-zhen(Hebei Institute of Vocation and Technology,Shijiazhuang050091,China)

    Present a control system based on profibus field bus,and introduce the application of profibus field bus in wet-process synthetic leather in detail.Profibus field bus can satisfy synchronous control demands,and improve control quality by solving problems in traditional control system because of high speed,high reliability of date transmission,simple connecting line and easy servicing.

    2009 03 v.15;No.61 [Abstract][OnlineView][Download 134K]
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