2010年03期目次

  • Problem analysis and countermeasures of Chinese coal industry sustainable development

    LIU Zhi-qiang~1,ZHANG Chun-hui~2,HE Xu-wen~2 (1.Shenhua Shendong Mine Group Yujialiang Coal Mine,Shenmu 719310,China;2.School of Chemical & Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)

    Take sustainable development theory as a guide,analyze the current status of Chinese coal industry development and the low comprehensive utilization rate,environmental pollution,ecological destruction and other serious non-sustainable development issues in the development process,and put forward specific policies and proposals to deal with the problems in the aspects of macro-control,the industrial structure,resources tax policy and environmental compensation.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 221K]

  • Study on flocculation of high mudding slime water

    KUANG Ya-li~1,Ql Xin~1,DENG Jian-jun~1,ZHANG Hai-yang~1,CHEN Xue~1,GUAN Xiang-ai~2 (1.School of Chemical Engineering,China University of Mining And Technology,Xuzhou 221008,China; 2.Coalfield Geology Bureau of Shandong Province,the Fifth Exploration Teams Detection Center,Tai-an 271000,China)

    The properties of extremely sliming coal slime water from one coal preparation plant were analyzed through X-ray diffraction and screening experiment,while the effect of the concentration of slime water,the dosage of agent,and the water quality on the settlement were also studied.The results show that a large number of clay minerals are in the sample which make slurry water into extremely sliming coal slime water;the concentration of slime water and the dosage of agent are the main factors in settlement;the optimum dosage of agent should be found by experiments as the concentrations of coal slurry is different;compared with running water,the water in the plant is advantageous to the settlement.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 1202K]

  • Optimization of slurry system of Dashu village coal separation plant

    ZHANG Shu-min~1,WEN Wu~1,TU Ya-nan~2,LIU Zhong-qiang~3,ZHAO Lu-guang~3 (1.JIZHONG Energy Group Co.,Ltd.,Handan 056200,China;2.College of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China; 3.Beijing CUMT Energy and Security Science Co.,Ltd.,Beijing 100083,China)

    Analyze the problem of filter pressing system in Dashu village coal separation plant,make in-depth theoretical analysis and experimental study about filter pressing links.Resolve the problem of high moisture content of filtered cake according to optimizating key operation process of slurry water treatment.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 516K]

  • Frequency conversion test of LLLll50 × 600A type scraper centrifuge

    WANG Wan-ming~1,JIANG Yun~1,LI Qiang~1,WU Chao-dang~2,ZHANG Sheng-yong~2,ZHANG Xue-hui~3 1.Wuhai Youyi Clean Coal Co.,Ltd.,Wuhai 016000,China;2.Tangshan Guohua Technology Co.,Ltd., Tangshan 063020,China;3.Tangshan Senpu Mine Equipment Co.,Ltd.,Tangshan 063034,China)

    Introduce the data obtained by using LLL1150×600A type scraper centrifuge.There is a good correlation regression equation between the data and centrifugal strength,also briefly analyze this regression equation.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 817K]

  • Reasons of rewash density decling inYangjian coal preparation plant

    WANG Hua-yong,QIAN Kun,LI Feng-xue,ZHANG Min,CHEN Kai-ling (Yangjian Coal Preparation Plant,China National Coal Group CoRP.,Shuozhou 036002,China)

    Medium barrel barrels bit continuousy in Yangjian coal preparation plant during production process rises, and.Combine process of coal preparation plant and actual test data of the raw coal and others,analyse the possible reasons for situation.Through targeted transformation of the site,the above problems are solved.The results are obvious, and meet expected requirement.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 628K]

  • Application of big-diameter two-product dense medium cyclone in Xuchang coal preparation plant

    LIU Dian-feng,ZHAO Fu-he,LAN Xiang-chun (Xuchang Coal Mine,Zibo Mining Industry Group Co.,Ltd.,Jining 272173,China)

    The big - diameter two - product dense medium cyclone as core equipment of coal - washing system implementing technics upgrading and transforming,the quality of its operation directly effect energy efficiency of the whole system.In view of this,focus on operating factors of influencing the operational effects,constantly testing, research,analysis,collect optimal parameter,meet the demand of the operation technics index。

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 155K]

  • Optimizing modification and practice of coarse slime system of Xinyang Coal Separation Plant

    LIANG Jin-yang,WANG Xiao-qi,REN Wen-qiang (Xinyang Coal Separation Plant,Fenxi Branch,Shanxi Coking Coal Group Co.,Ltd.,Xiaoyi 032300,China)

    According to the index characteristics of each dilute media of HM System in Xinyang coal separation plant,the dilute media in clean coal,the dilute media in middle gangue,the dilute media in middle coal and the dilute media in the gangue are recovered respectively,which decrease the handing capacity of coarse slime separator,and the anticipant production are required which are influenced by large treatment of coarse slime separator.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 378K]

  • Effect of calcium and sodium additives on the pyrolysis characteristics of Pingshuo demineralized coal

    YIN Hong-yan,WANG Mei-jun,WANG Jun-hong,BAO Wei-ren,CHANG Li-ping (Key Laboratory of Coal Science and Technology,Taiyuan University of Technology, Ministry of Education and Shanxi Province,Taiyuan 030024,China)

    The minerals in Pingshuo raw coal were removed by hydrochloric and hydrofluoric acid washing method. Coals loaded calcium and sodium were obtained by impregnating the demineralized coal in the Ca(Ac)_2 or NaAc solution.The pyrolysis experiments of coal samples were carried out in a fixed-bed reactor.The gaseous products form coal pyrolysis were analyzed by gas chromatography.The heat changes during pyrolysis was measured by thermal analytical balance.The experimental results show that calcium and sodium in coal sample decrease the initial temperature and increase the total gaseous products yield during pyrolysis.The gas component from coal pyrolysis is changed and the H_2 accumulated yield in pyrolysis gas of coals loaded calcium and sodium are 10% more than that from demineralized coal.DTA analysis show that the types and amounts of additive loaded are the main factors influencing thermal effects during coal pyrolysis,the changes of the thermal effect and the release of pyrolysis gases are closely related.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 255K]

  • Effect on slurryability of coal water slurry about thermal conversion Shenhua coal

    WANG Guo-fang (Beijing Research Institute of Coal Chemistry,China Coal Research Institute,Beijing 100013,China)

    The coal quality analysis,thermal treatment test and slurry ability were studied by using the two coal samples of Shenhua Energy Corporation.The results show that thermal conversion can obviously improve Shenhua coal quality and slurry ability.It also show that a temperature sensitivearea is exit for the two coal samples and the slurry concentration enhancing obviously at this area.The temperature sensitivearea is 250℃ to 300℃ and 200℃ to 250℃ respectively for the No1 and No2 of Shenhua coal.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 450K]

  • Entrained-flow pulverized coal gasification performance simulation analysis

    SONG Zhi-chun,BAO Wei-ren,CHANG Li-ping,LI Fan (Key Laboratory of Coal Science and Technology,Taiyuan University of Technology, Ministry of Education and Shanxi Province,Taiyuan 030024,China)

    Based on the process simulator-Aspen Plus software,the entrained-flow pulverized coal gasification process was simulated by Gibbs free energy minimization method,the flow arithmetic was improved also.The effects of oxygen-coal ratio,steam-coal ratio,pressure and pulverized coal particle size on the crude syngas composition, gasification temperature,cold gas efficiency,carbon conversion efficiency and productivity of CO+H_2 were studied.The results show that the simulation and the experiment results fit well.Oxygen-coal ratio is one of the most important conditions for gasification process,which is more significant than the other conditions,and the best oxygen-coal ratio is 0.70～0.80 kg/kg for simulated coal.The best parameters corresponding gasification process are CO+H_2 volume fraction of 96.48%(dry base),cold gas efficiency of 83.56% and CO+H_2 yield of 1.74 m~3/kg coal.The gasification temperature is elevated about 40℃ when the oxygen-coal ratio is increased by 0.1kg/ kg and reduced about 8℃ when the stream-coal ratio is increased by 0.1 kg/kg.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 748K]

  • The research development of the briquette and the formcoke production

    FANG Zhao-ying,GONG Zhi-jian,CAI Tao,FENG Li-jun (College of Chemical and Environmental Engineering,SUST,Qingdao 266510,China)

    According to the demestic briquette and the formcoke production,the emphasis should be placed on the modification mechnism of the tar binder and the pitch binder.The pretreatment of the briquettes is an important procedure which can avoid the softening and conglutination during the process of the carbonization of the briquettes. The pretreatment technology and how to achieve the integration of the pretreatment and carbonization in industry is an issue worth of research.Using phenolic resin as the binder can get much carbon resdue after curing and has high strength,only curing at low-temperature will be sufficient for the briquettes to be used as substitute for metallurgical coke in the blast furnace.The further research is how to reduce the production cost of the phenolic resin.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 214K]

  • Exergy thermodynamic analysis of Shell coal dust gasification system

    CUI Guo-xing~1,SHENG-Xin~2,ZHANG Li-hua~1 (Department of Chemical and Biological Engineering,Sanming University,Sanming 365004,China; 2.Anqing Branchh,SINOPEC,Anqing 246002,China)

    Through exergy balancing on the Shell coal dust gasification system by means of exergy thermodynamic, analyze the exergy efficiency and exergy losing of this system.Advance some measures to increase the exergy efficiency. The results show that gasifier is the largest exergy loss equipment,amounting to 81.1% of the total loss; the water cooled wall has the lowest exergy efficiency which is 48.1%;the exergy efficiency of Shell coal dust gasification system is 77.7% which is higher than coal-water slurry entrained flow bed gasification.High load and longterm stable operation determine the Shell coal dust gasification system whether can be successfully used.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 761K]

  • Study on the support of supported gas desulfurizer

    LIU Hong-xing,WANG Ying-li,ZHANG Ying,CHANG Li-ping (Key Laboratory of Coal Science and Technology,Taiyuan University of Technology, Ministry of Education and Shanxi Province,Taiyuan 030024,China)

    The supports of sorbents for removing compounds containing-S from hot coal based gases is very important. The metal oxides can be uniformly distributed on the good support and the specific surface area,thermostability and mechanical strength of sorbent can be improved.The modification of supports of γ-Al_2O_3,active carbon and TiO_2 is analyzed and based on their advantages and disadvantages in desulfurization.The γ-Al_2O_3 and active carbon modified and mixed TiO_2 will be regarded as prospective sorbent supports in the industrial applications for gas cleaning.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 212K]

  • Over temperature of primary super heater in CDQ waste-heat boiler

    YU Hong-ling,LIU Feng,DU Yan-yan,ZHANG De-li,GE Wei-dong (College of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

    Concerning over temperature of primary super heater,the heat transfer coefficient of primary super heater was analyzed from the aspects of reburning of circulatory gas.The results show that the heat transfer coefficient in practice is 13% more than in design.It lead to over temperature of primary super heater when heating surfaces remain unchanged.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 439K]

  • Research on characteristic temperature of coal spontaneous combustion with different granularity by thermal gravity analysis method

    ZHOU Pei-ran,WANG Nai-ji,ZHOU Jian-ming,XIAO Cui-wei (Beijing Research Institute of Coal Chemistry,China Coal Research Institute,Beijing 100013,China)

    Choose three kinds of coal and make each into three granularity.TG with non-isothermal measurement is selected and Obtain TG/DTG curves is obtained.Get six characteristic temperatures of the coal spontaneous combustion process.The related temperature ranges is set.With the analysis of the coal samples,the variation law is concluded.The result show that T_1 and T_6 basically keep constant with different granularity,the laws of other four characteristic temperatures are distinct.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 465K]

  • Study on blending multi-fuel technology in CFB boiler

    ZHANG Yi-wei~1,ZHENG Wen-kai~2 (1.Maoming College,Maoming 525000,China;2.Ethylene power plant, Maoming Petrochmical Corporation,Maoming 525000,China)

    Analyze the features of different kinds of coal and point out the methods and meatures of burning multifuel. In the premise of ensuring safety,make further improvement on the enterprise' s economic benefits.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 367K]

  • Numerical simulation for influence of flue gas recycle and zoned air on NOx formation in chain boiler

    Hu Man-yin,Han Jing,Liu Zhong,Lin Wei (School of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,China)

    Numerical simulation was used to study the combustion procession,temperature distridution and NO_x emission for a 10 t/h chain boiler with and without flue gas recycle.The differences were contrasted when flue gas is recycled to the primary wind inlet and to secondry wind inlet.The results show that the temperature distridution decreased with flue gas recycle and there is less NO_x emission.And when flue gas is recycled to secondry wind inlet,the NO_x emission dropped mostly.The result offer a reference to design and operate a chain boiler.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 578K]

  • Study of removal of SO2 by activated coke impregnated with NH3

    WU Tao,GUO Zhi,LIANG Da-ming,SUN Zhong-chao,LI Lan-ting (Beijing Research Institute of Coal Chemistry,China Coal Research Institute,Beijing 100013,China)

    Adsorption of SO_2 from different containing gas by activated coke and activated coke impregnated with NH_3 was studied.Experimental results show that when the flue gas without O_2-containing and moisture,SO_2 removal in the activated coke is physical adsorption.The activated coke is impregnated with NH_3,the NH_3 on the surface of coke react with SO_2,and improve the removal of SO_2.When the flue gas with O_2-containing and moisture,the activated coke removal of SO_2 is the physical and reaction.The activated coke is impregnated with NH_3 can promote the removal of SO_2 significantly.Through X-ray photoelectron spectrometer find that the nitrogen-containing functional groups increase on the surface of activated coke impregnated with NH_3.These functional groups advance the adsorption and oxidation of SO_2.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 511K]

  • Technical discussion on chemical reaction between coal and CO2

    CHEN Cui-ju (Xi'an Branch,China Coal Research Institute,Xi'an 710054,China)

    Discuss the main problems in dry distillation and analyze from the sample preparation,test preparation, chemical reaction examination between coal and CO_2.Analyze the influence on coal reactiriy temperature increasing and gas flowing.The solution methods are prorosed.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 183K]

  • The dewatering technology for lignite

    WANG Xiu-jun~1,PENG Ding-mao~1,HUANG Feng-bao~1,ZHANG Shou-yu~1,HAO Zheng-hu~2,LV Jun-fu~2 (1.School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China; 2.Department of Thermal Engineering,Tsinghua University,Beijing 100084,China)

    The properties of lignite and the problem in the application of lignite are firstly introduced.Then,the dewatering technologies for lignite are described detailedly.The vibration screen drying technology for lignite dewatering is suitable for China.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 221K]

  • Study of biomass coal water slurry rheological behavior

    DENG Hui,LUO Zu-yun,LIN Rong-ying,LIN Cheng (Institute of Chemical Engineering and Technolog,Fuzhou University,Fuzhou 350108,China)

    Rheological behavior of biomass coal water slurry containing Fujian anthracite,water hyacinth and dispersant were described.The results illustrat that the biomass coal-water slurry made by 3%～3.5% water hyacinth and 1% dispersant could be produced at acceptable viscosity within 0.8Pa·s to 1.2Pa·s with excellent stability. The viscosity of biomass coal water slurry increase while biomass content increasing.When 1 % dispersant is added ,the rheological behavior of biomass coal water slurry turn better;The viscosity of biomass coal water slurry become lower as the mixing time extended.As the temperature is under 60℃,the viscosity of biomass coal water slurry decline. Above 60℃ the viscosity increase.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 387K]

  • Contrast of instrument method and standard method in volatile determination

    LIU Xiang-yun (Guizhou Agency of Quality Supervision and Inspect of Coal Product,Liupanshui 553001,China)

    According to the GB/T 212—2007 provision which introduce how to determine volatile,contrast the instrument method and standard method by doing some experiments.The results show that instrument method can reduce the laboratory technician's labor intensity and improve efficiency while get quick and accurate test results.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 239K]

  • Optimination study of wet desulphurization limestone slurry

    YIN Lian-qing,GUO Jing-juan (College of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,China)

    To improve the efficiency of wet desulphurization and save energy,taking Cangdong plant and Baoding thermoelectric power plant for example,optimize the quality of limestone slurry from the part of slurry parameters, also study the slurry level in absorber and quantity of limestone slurry loop according to field experiments and programming terms.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 400K]

  • Study of rapid determination of coal ash

    YU Yang-bo (Guizhou Agency of Quality Supervision and Inspect of Coal Product,Liupanshui 553001,china)

    Compare the method of GB/T 212 -2008 and rapid determination in determining ash.The results show that the latter method shorten the analysis time,save electric energy and labour power,acquire accurate analytic result.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 195K]

  • Study on advanced treatment of coking wastewater with biological activated carbon process

    GUO Sheng~1,WANG Guang-hua~2,LI Wen-bing~2,WU Zhao-Yang~2,JIANG Li-Juan~2 (1.College of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China; 2.College of Chemical Engineering and Technology,Wuhan University of Science and Technology,Wuhan 430081,China)

    Study the advanced method of biological activated carbon ( BAC) treated bio-treatment outflow of coking wastewater.Results show that the bio-treatment outflow of coking wastewater ( COD 200 mg/L,chroma 900) is treated by biological activated carbon,the COD and chroma respectively reduce to 46.9 mg/L and 25.8,up to the national industrial regeneration of water quality standards (COD < 60 mg/L,chroma < 30).Compared with granular activated carbon (GAC),the treantmentof BAC rise the removal of the COD and chroma separately up to 13.4% and 5.2%.And the service life of BAC is 3.3 times of granular activated carbon,the material fee per ton water of BAC is 1.4 yuan which is 3.26 yuan less that of granular activated carbon.Biological activated carbon is an effective and costless advanced method of coking wastewater.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 347K]

  • The role of microorganism during acidic mine drainage

    WANG Li-yan,WANG Lu,ZHANG Yun-jian,ZHANG Xin (College of Chemical and EnviYonmental Engineering,China University of Mining and Technology,Beijing,100083)

    The varieties,quantities and action of microorganism from acidic mine drainage (AMD) were investigated at different stages of mining.The results show that sulfur and oxygen are necessary conditions and the microorganisms also play an important part in the process of AMD.Bacteria is primary in early stage,such as Thiobacillus ferrooxidans, Thiobacillus ferrooxidans and some other aerobic sulfur bacteria,and at the later stage some mildew strains with biological oxidation hare an effect on the formation of AMD,such as Thiobacillus ferrooxidans.A series of integrate equations are deduced for the formation of AMD in the study.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 376K]

  • Application of “3S” technology in ecological construction of mining area

    WU Gang,ZHANG Yi-ping,PAN Yu-zhong,ZENG Zhao-kai (GuiZhou Key Laboratory of Comprehensive Utilization of Non-metallic mineral resources, Mining College,Guizhou University,Guiyang 550003,China)

    Discuss the advantage of "3S" technology based on the deficiency of the traditional way about environment dynamic monitoring,and focuse on the process of the "3S" technology construction program in the application of the mining ecological construction.Take Guizhou Yanhe Qiaojia mining ecological construction as the main characteristics of karst for the engineering application,explore the "3S" technology effect,then submit the results of practical value.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 201K]

  • Preliminary study of treated water of industrial wastewater reclamation

    WU Zhao-yang,WANG Guang-hua,LI Wen-bing,Guo Sheng,Chen Kun (College of Chemical Engineering and Technology,Wuhan University of Science and Technology,Wuhan 430081,China)

    This research got a dispose of regeneration for treated water of coking industrial wastewater through adding a kind of fine chemical as flocculation synergist in the process of coking treated water of industrial wastewater disposal through flocculation with PAC.The results show that the removing rate of chroma and COD can be increased markedly when flocculation synergist is added in the process of flocculation.Compared with the process when PAC is used alone,the removing rate of COD can be increased to 55.7% from 47.3%,the removing rate of chroma can be increased to 90% from 64.3%,The content of COD reduce to 88mg/L from 200mg/L while the chroma reduce to 55 from 600.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 388K]

  • Separation and purification of 2-Methylnaphthalene from wash oil

    QI Guo-dong,BAI Zhong-lan,LI Su-kun,MA Xiang-lin,SHI Hui-wen (School of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China)

    Introduce an effective method about the separation and purification of low level 2-Methylnaphthalene from wash oil.The determination of gas chromatography shows that the purity of 2-methyl naphthalene reach 99.5%, and the recovery rate reach 79.8% or more.The process has many characteristics such as simple process,higher purity,low pollution,recycle use of azeotrope former,lower lost and so on.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 497K]

  • Comparative analysis of science and technology activities in Jincheng Coal Company

    NIU Dong-lan (Technology Center,Shanxi Jincheng Anthracite Mining Group Co.,Ltd.,Jincheng 048006,China)

    The science and technology talent,technology and corporate investment funds and other aspects of patent output of Jincheng coal company are compared with national medium-sized enterprises.Know the level of science and technology activities,find the good place and defects,point out the areas which shoud be promoted in activities.

    2010 03 v.16;No.67 [Abstract][OnlineView][Download 178K]



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