- WU Bao-zhang,CHEN Xue-li(Henan Yongmei Coal Industry Group.,Yongcheng 476600, China)
Clean coal combustion technology can be divided into pre-combustion, mid-combustion and post-combustion phases based on the basic concept of clean coal technology and by using the gradation analysis and system evaluation method. Environment character, energy saving rate, technical maturity and economics were adopted for multipurpose evaluation of various clean coal technologies. At least, the technical evaluation system was established.
2002 03 [Abstract][OnlineView][Download 38k] - LIU Chen(Dongtan Coal Mine Preparation Plant, Yanzhou Coal Industry Joint-Share Co. Ltd. Zhoucheng 273512, China)
The macrotype, standardized and automation are the development direction of coal preparation technology on the world. The coal preparation industry development direction is that, enhancing cleaned coal quality, increasing steam coal preparation rate and decreasing production cost through technical progress, to encourage the enterprise using steam coal preparation production.
2002 03 [Abstract][OnlineView][Download 30k] - XIE En-qing, FU Cong, LI Ying-hua(Nation Coal Quality Supervision and Inspection Center, Beijing 100013,China)
The measurement method of moisture, ash and volatile matter content in the coal water mixture and its precision accuracy are studied as a focal point. The representative ability and condition of experiment sample are discussed. Optimum test condition of the proximate analysis method for coal water mixture is defined.
2002 03 [Abstract][OnlineView][Download 72k] - LI Shao-bing(Synthesis Material Co. Ltd. Huainan Coal Industry Group. Huainan 232046, China)
The HNF series additives for coal water mixture production are produced by synthesis material Co. Ltd., Huainan Coal Industry Group and popularized application situation in, China were summarized. Application character of HNF series additives is different CWM process, coal rank and usage is introduced. Its advantages and disadvantages are summarized and its development prospect is put forward.
2002 03 [Abstract][OnlineView][Download 24k] - WANG Bao-zhong 1,JIA Xiao-ming 1,ZHAO Wei 2(1.Machinery Department, Hebei Institute of Technology, Tangshan 063009, China; 2.Tangshan Steel and Iron Co. Tangshan 063009, China)
The erosion abrasion mechanism of coal water mixture nozzle was discussed mainly. Effect of main parameter on the nozzle lifetime was decided and improvement countermeasures were also put forward. The surface reinforcement treatment process was adopted and lifetime of nozzle was also improved.
2002 03 [Abstract][OnlineView][Download 25k] - WU Ning,WU Xin-jing,WU Yan,CAO Shu-ming(Technology and Economy Department, Institute of Coal Preparation. Pingdingshan 467002, China)
The coal water mixture combustion efficiency is high therefore it can be used as a substitute fuel for oil and coal. Coal water mixture superiority and industry application feasibility is illustrated from economic and environment control benefit, energy saving and new transportation pattern.
2002 03 [Abstract][OnlineView][Download 29k] - LI Ming-hai,QI Ming-qiang,RONG Zong-qian,MENG Ju-chen(Dongpang Coal Mine Preparation Plant, Hebei Jinniu Energy Co. Ltd. Xingtai 054201, China)
The production process and 12 items key technological transformation after putting into operation in Dongpang Coal Water Mixture Plant are introduced. The high concentration coal water mixture transportation, mixed production process and practice are described mainly.
2002 03 [Abstract][OnlineView][Download 28k] - ZHONG Xiao-jing, LIU Zhen, LIU Jie(Environment Protection Center, Taixi Group Co. shizuishan 753000 China )
The relationship between coa and environment protection is introduced briefly. Process and technology of captured sulfur cleaned briquette are explained systematically. The captured sulfur is very effective and SO 2 emission can be decreased by using this technology through large amount laboratory test and pilot test.
2002 03 [Abstract][OnlineView][Download 31k] - SU Li-qing,LI Mei-fen(Yantai Energy Monitoring Center, Yantai 264001, China)
The enhancing combustion efficiency and utilization rate of upper fired type and square honeycomb briquette that is used in atmosphere hot water boiler were introduced through adjustment the briquette quality.
2002 03 [Abstract][OnlineView][Download 22k] - ZHANG Hong-bo 1,ZHANG Zeng-gui 2,DONG Ping 1(1.Heilongjiang Institute of Science and Technology,Jixi 158105; 2.Chengzihe Coal Mine Preparation Plant,Jixi 158105)
The production process and combustion theory of bio-briquette are analyzed. Main factors that influenced on the combustion rate of bio-briquette are gained through experiments. The result can be used as a theory basis for design and operation of industrial and domestic boiler.
2002 03 [Abstract][OnlineView][Download 37k] - HUANG Lue, JIANG De-hua, GONG Wen-qiang(Maoming Thermal Power Plant, Maoming 525011, China)
The 220 t/h oil fired boiler in Maoming Thermal Plant was transformed into burning coal water mixture. It was fount that the over temperature was happened in the well of steam superheater and superheated steam through a long term operation. Its main cause as mentioned above was analyzed in this paper. The solving method was put ford based on the main influence factor and actual operation situation. A good result was gained after a technical transformation.
2002 03 [Abstract][OnlineView][Download 22k] - WANG Zhi-wei 1,ZHANG Chao-yang 2(1.Nation Electricity Thermal Power Engineering Institute. Xian 710032; 2.Beijing Nation Electricity Longyuan Environment Protection Engineering Co. Ltd. Beijing 100761,)
A desulfurization performance test was conducted in the 1 MWth circulating fluidized bed (CFB) furnace by using a certain high sulfur coal. The result is shown that, desulfurization efficiency reached more than 90% when Ca/s mole ratio is 2.2, the effect of limestone on desulfurization efficiency have relevant to limestone amount in the furnace, the limestone concentration in CFB furnace is an important index for evaluation desulfurization efficiency of limestone and the desulfurization condition on the top of furnace have relevant to the SO 2 concentration in the flue gas at a great extent.
2002 03 [Abstract][OnlineView][Download 52k] - SUN Lin-bing,NI Zhong-hai,ZHANG Li-fang,ZONG Zhi-ming,WEI Xian-yong(School of Chemical Engineering,, China University and Mining Technology, Xuzhou 221008, China)
Research advancement of nitrogen and sulfur existence form in coal and separated out form of them in coal pyrolysis process are summarized in this paper. Effect of temperature, pressure and coal rank on the existence form of nitrogen, sulfur in the pyrolysis products was discussed. The probable formation paths of nitrogen and sulfur compounds were provided. The emphasis is laid on basic research of nitrogen and sulfur forms in pyrolysis process for realized the clean use of coal.
2002 03 [Abstract][OnlineView][Download 41k] - WANG Ling,ZHANG Wen-hui,LI Shu-rong(Beijing Research Institute of Coal Chemistry, CCRI . Beijing 100013, China)
A test method for determination the half dechlorine value of activated carbon was introduced.
2002 03 [Abstract][OnlineView][Download 23k] - WANG Ping 1,HAN Guo-kui 2(1.Science & Technology Department, Fengxi Coal Industry Group Co. Jiexiu 032000 Chian; 2.Gequang mine, Xingtai Coal Industry Group Co.,Xingtai 054102,China)
The status and planning of methanol production and utilization in Shanxi are introduced based on an investigation. Economic benefit of methanol production by using different raw materials is analyzed and a suggestion of methanol industry development in shanxi is put forward.
2002 03 [Abstract][OnlineView][Download 44k] - WANG Yu,MENG Xiang-qing,ZAHO Cai-xia, XU Zheng(Beijing Tsinghua Ziguang Tongxing Environment and Protection Science and Technology Joint-Stock Co. Ltd.,Beijing 100084)
The captured sulfur agent added into clean coal is very important based on the situation in, China such as coal as the main energy, coal users dispersion and coal smoke pollution type. The industrial application result is shown that, the captured sulfur rate may reach more than 40% when TUX-GL series assistant captured sulfur agent added into clean coal production. Therefore, it is a reality and effective route in, China.
2002 03 [Abstract][OnlineView][Download 33k] 下载本期数据