- LUO Yun-fei,Du Ming-hua,LI Wen-hua(Beijing Research Institute of Coal Chemistry,China Coal Research Institute,Beijing 100013,China)
The DOE's near-and long-term clean coal programs of USA are introduced,and three typical coal programs(Vision 21,FutureGen and CCPI) are presented in this paper.
2005 04 [Abstract][OnlineView][Download 307K]
2005 04 [Abstract][OnlineView][Download 128K] - LI Pu~1,DUAN Mu-song~2(1.The Northwest Research Institute of Chemical Industry.Xi′an 710600,China;2.The Northwestern Polytechnical University.Xi′an 710072,China)
Coal is the main primary energy in the world,but it is not clean energy.A series of environmental pollution problems during the mining、processing、transportation and utilization were created while it makes contribution to the society.Improving the efficiency of coal utilization,reducing the environmental pollution and developing Clean coal technology should be conducted for solving low efficiency utilization and serious pollutions in China.
2005 04 [Abstract][OnlineView][Download 69K] - Ding Zhi-jie~1,WANG Zu-na~2(1.Chemical and Environmental Engineering College,China University of Mining and Technology.Fengyang 233100,China;)2.Chemistry and Environment Department,China University of Mining and Technology.Beijing 100083,China
The effect of the varying dosage of emulsified collector on the separation of the separation process for ultra-fine coal was investigated.Three kinds of interface chemistry techniques: conventional flotation,aggregative flotation and oil agglomerates screening were used in this process.The addition of collector to a suspension of small hydrophobic coal particles sets up a flocculation process in which oil droplets can condense at the points of particle contact to form pendulum bridges.Depending on the amount of oil,this pendulum flocculation process can result in the formation of flocks,macro flocks or spherical agglomerates.The agglomerates were viewed and photographed with a transmitted light microscope with research quality optics.Agglomerates size distribution was measured by laser beam master size.The product ash content and the yield were determined.The study aims at optimizing the condition for beneficiating ultra-fine coal.
2005 04 [Abstract][OnlineView][Download 547K] - FANG Cun-song,ZHANG Ming-xu(Material Department,Anhui Technology University.Huainan 232001,China)
The structure and principle of tri-products heavy media cyclone were discussed briefly.Heavy media separation process based on the tri-products heavy media cyclone as the main equipment,transformation of coal preparation plant and to produce 9 10 grade cleaned coal from extremely difficult separation coal were introduced after transformation.The yield of cleaned coal was enhances and large economic benefits were gained.
2005 04 [Abstract][OnlineView][Download 78K] - HAO Shou-xin,GAO Zhi-an(Kailuan Lüjiatuo Mining Branch Corporation,Tangshan 063107,China)
Flotation coarse grain recovery system was adopted in Lujiatuo Coal Preparation Plant.The annual profit reached 21.6 million yuan RMB and cleaned the wash water after transformation.The system disposition,start and shut down operation procedures are introduced.
2005 04 [Abstract][OnlineView][Download 38K] - YANG Chun-lan,FAN Xiao-nan(Material Science and Engineering Department,Anhui University of Technology.Huainan 232001,China)
The improved method of slime water treatment system was put forward through analysis of slime water treatment system problem of zhangji coal preparation plant.The method reduces the slime water concentration and keeps the circulation water concentration in a good interval range,which ensures continuous and normal operation of coal Jigging process and close circulation.Meanwhile,a good effect can be gained.
2005 04 [Abstract][OnlineView][Download 67K] - WU Li-qiong(Beijing Research Institute of Coal Chemistry,CCRI.Beijing 100013,China)
Blending 5% anthracite in coking blending is not only decreasing production cost but also decreasing ash and sulfur content in coke,enhancing coke quality based on the feasibility study on Chinese coal quality anthracite distribution and used in coking blending.
2005 04 [Abstract][OnlineView][Download 107K] - TIAN Zhong-kun~1,PAN Qiang~2(1.Chemistry and Environment Department,China University of Mining and Technology.Beijing 100083,China;2.Mechanics and Building Engineering Department,China University of Mining and Technology.Beijing 100083,China)
The designs of clean coal water mixture pumping process and energy station construction were put forward through economic analysis and fine clean coal water mixture character.It indicates that the fine water mixture has great developing potential as the substitute source through its operation economic condition.
2005 04 [Abstract][OnlineView][Download 101K] - YIN Su-dong,TAO Xiu-xiang(School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221008,China)
Bio-solubilization of coals is a new field for coals comprehensive utilization and processing.In this paper,actualities of the study on bio-solubilization of coals are introduced,including the background,the study methods,and the mechanism of bio-solubilization,products from bio-solubilization,problems and futurity of bio-solubilization.Structure of coals,the relation between microorganism and coals and the new method of bio-solubilization of coals are the main study aspects in future.
2005 04 [Abstract][OnlineView][Download 126K] - YU Guang-yuan,LI Ya-dong(Zhongyuan Dahua Group Co.Ltd.Henan Province,Puyang 457004,China)
It was introduced two kinds of representative coal gasification processes.The Texaco configuration using slurry coal feed gasifier and Shell configuration with dry coal feed gasifier were compared for finding affection to total gasification performance.Different technical features and critical equipment are also analyzed.The dry feed method avoid losing energy for gasified water,and more flexible distribution of nozzle than the coal water slurry feed method were illuminated.Finally,described the Shell process had more advantage than Texaco process by some primary performance parameters.
2005 04 [Abstract][OnlineView][Download 116K] - LIU Zhi-rong~(1,2),Peter Warwick~2(1.Department of Applied Chemistry,East China Institute of Technology Fuzhou 344000,China;2.tment of chemistry,Loughborough University Leicestershire LE11 3TU)
The experiments show that the mechanics of adsorption on peat cannot be determined by the pH change of solution of peat by means of different quantity and different pH peat solution and peat acts as a buffer agent.
2005 04 [Abstract][OnlineView][Download 42K] - FENG Zhi-hua~(1,2),NIE Bai-sheng~(1),CHANG Li-ping~2,XIE Ke-chang~(2)(1.College of Resource and Safety Engineering,China University of Mining and Engineering,Beijing 100083);(2.Shanxi Key Laboratory of Coal Science and Technology,Taiyuan University of Technology,Taiyuan 030024,Shanxi)
Pyrolysis is the first and essential step in coal conversion process.Experiments have been carried out to investigate the effects of parameters on the formation of HCN and NH_(3) during Shenmu coal pyrolysis in a fixed-bed reactor.Experimental results indicated that the peak temperature affects the formation of HCN and NH3,particle size,heating rate and gas flow rate.In pace with increasing the end temperature and heating rate,the more HCN and NH_(3)release.Particle size has a reverse effect on the formation of HCN and NH_(3).The gas flow rate influences the HCN and NH_(3) depending on the mode of pyrolysis.
2005 04 [Abstract][OnlineView][Download 152K] - LI Zhen~(1,2),LIU Ze-chang~(1,3),ZHAO Ying~1,SHI Yu-miao~1(Chemical and environmental engineering college of Shandong university of science and technology,Shandong Qingdao 266510,China;2.Chemical department of Taishan college,Shandong Taian 271021,( )China;3.Shandong institute of architecture and engineering Jinan 250100,China)
The chlorine emission characteristics during coal heating in reductive atmosphere were studied through different coal samples pyrolysis and analysis the factors influencing chlorine emission.The absorption model of chlorine occurrence in coal was established and the absorption energy of different coal samples was worked out.The results indicate that absorption energy is related with coal rank,especially with volatile matter form a linear relation.
2005 04 [Abstract][OnlineView][Download 181K] - ZHANG Dong-chen~1,ZHANG Ming-xu~1,CHEN Qing-ru~2,Li Qing~1(Department of Material Science and Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China;2.School of Chemical Engineering,CUMT.Xuzhou,Jiangsu 221008,China)
Desulfurization effect of pyrite sulfur in coal was studied by using the magnetizing cultivates the China coal series and non-coal series thiobacillus ferrooxidans.Result is shown that,the magnetizing environment has a promotion role on mineral chemistry nutrition desulfurization bacterium thiobacillus ferrooxidans growth.Maximum desulfurization rate of coal series thiobacillus ferrooxidans under certain magnetizing cultivate condition reached 86.16 % that is higher than the non-coal series.Obviously,the coal series thiobacillus ferrooxidans is better for coal desulfurization.
2005 04 [Abstract][OnlineView][Download 210K] - DONG Ping,CHEN Yan-jie(Heilongjiang Institute of Science and Technology.Harbin 150027,China)
This paper focuses on modelling of steam coal blending with application of some non-linear theories,based on the requirement of consumers and the principle fundaments of some algorithms to optimising steam coal blending process.The result of studies state clearly as follows: Enumerative algorithm is accurate but not efficient while mixed discrete-variables optimisation design can only achieve part optimisation and is easily trapped into partially optimised result;With strong robustness,genetic algorithm is good at searching for the final optimised result.And simulated-annealing algorithm is simple and of a great ability of local searching.On the basis of the two later algorithms,this paper proposes a hybrid algorithm of genetic algorithm and simulated-annealing algorithm.The new hybrid algorithm may produce a more marked effect than other single algorithm.
2005 04 [Abstract][OnlineView][Download 125K] - NIE Jin-xu~(1,2),XIAO Xian-min~1(1.Guangzhou Institute of Geochemistry Chinese Academy of Sciences.Guangzhou 510640,China;2.Department of Municipal Public Facility,Guangdong University of Technology.Guangzhou 510090,China)
This paper introduced the process of nanofiltration for treating mining water containing suspended matters.The influence of nanofiltration membrane operating condition to the filtration function of membrane and the effect of the combined process on coal mining water treatment were investigated.The experimental results showed that when operated at the cycle of T=30min and adapted to backaeration,the fouling of the membrane decreased effectively.The effluent quality of the system is stable and the tested items of the effluent met the national drinking criterion.The nanofiltration membrane is a high-efficiency and economical process in coal mining water treatment.
2005 04 [Abstract][OnlineView][Download 105K] - MA Han-peng~(1,2),WANG De-ming~1(1.School of Mineral and Safety Engineering,China University of Mining and Technology,Xuzhou 221008,China;2.Ventilation Division,Zaozhuang Mining Group,Zaozhuang 277000,China)
The advantages and disadvantages of coal dust preventing techniques at domestic and abroad were analyzed.The dust preventing equipment effect of new dust preventing equipment,technical methods are discussed through analyzing data from each coal seam and each working process in coalmines attached to Zaozhuang Ming Group Corp Ltd.
2005 04 [Abstract][OnlineView][Download 62K] - MU Shajiang~(1,2),ZHU Shuquan~(1),WANG Haifeng~1,WU Xiaohua~1,ME Dingyet~3(1.Beijing campus,China University of Mining and Technology, Beijing 100083,China;2.Xinjiang Coal Research Institute,Urumqi 830091,China;3.Xinjiang Agricultual University,Urumqi 830091,Chine)
Two kinds of low degree coalification coal,Xinjiang 1# and Xinjiang 2#,have been adopted to make CWS with(N-NH_(3))ammonia-containing coking wastewater in this study.The results show that it is hard to produce CWS due to high content of oxygenic functional groups,high inherent moisture and low grindability of the coal.Ammonia-containing coking wastewater of different concentrations have been used in the experiments for a further study on how the ammonia concentration affects the rheological characteristic of CWS.The experiments indicated that it had disadvantageous effects on the rheological characteristic.As the concentration increased,the apparent viscosity of CWS increased and the liquidity gradually decreased,but the stability improved.
2005 04 [Abstract][OnlineView][Download 117K] - WANG Xiao-ming(Gushuyuan Coal Mine,Jinmei Coal Industry Group.Jincheng 048000,China)
The feeding device transformation scheme and the result of type of DGC1147/180 briquetting machine was introduced during its production commissioning process.Design modification route of large output briquetting machine was put forward based on the transformation experiences.
2005 04 [Abstract][OnlineView][Download 94K] - MI Hong-yan(Coal Preparation Plant,Kailuan Fangezhuang Mining Corporation.Tangshan 063109,China)
The composition,application,basic order,feature and development tendency of CVMID programmable controller that is made by Omron Co.,Japan were introduced in this paper.
2005 04 [Abstract][OnlineView][Download 55K] - YU Fang(Yinzhou Power Supply Bureau,Ningbo City.Ningbo 315040,China)
The transformer station automation technology will be entered into digital new stage based on the electromechanical integrated development such as intelligent switch and photoelectricity mutual indicator.The character,structure and functions of automation system in digitise transformer station were discussed.
2005 04 [Abstract][OnlineView][Download 59K] -
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