- ZHANG Zi shao,YE Da wu,HE De fang,JI Guo you(Institute of China Coal,Beijing 100013,China)
The possibility of limit the yield in high sulfur coal production and related the evaluation of environmental and economical were studied. It was confirmed that, the SO 2 emission could be reduced effectually and the coal output in whole country could not be affected notably by limit the yield of high sulfur coal. A limit yield analysis was made from 112 high sulfur coal mines that are located at different regions in China. The SO 2 emission reduction will be 1 34 Mt/a when limit only to produce 18 58 Mt/a high sulfur coal at first. According to a calculation the SO 2 emission reduction will be 5 57 Mt/a which amount to 24% of the total SO 2 emission in China, if 82 4 Mt/a high sulfur coal was limited in production in whole country.
1999 03 [Abstract][OnlineView][Download 42k] - XU Zhen gang 1,ZHANG Zhen yong 2(1 Beijing Research Institute of Coal Chemistry, Beijing 100013,China) (2 Lingyuan Iron and Steel Corporation,Lingyuan 122500,China)
Methane (CH 4) is the second most important of the greenhouse gases after CO 2. Current total emission of CH 4 in worldwide are estimated to be 535 Mt/a, in which man-made emission from petroleum, natural gas and coal production, disposal of solid waste and sewage, rice cultivation, domesticated livestock and burning of biomass account for a greater proportion of about 70%. This paper presents systematically above mentioned CH 4 emission sources and some appropriate reducing countermeasures according to the investigation and studies of IEA Greenhouse Gas R&D Programme.
1999 03 [Abstract][OnlineView][Download 31k] - LI Jun,LU Da peng(China University of Mining and Technology, Beijing 100083,China)
For satisfied the demand of carburizer in steel making and on the basis of briquette special technology, carburizer was produced by the anthracite. Meanwhile the principal of process parameters and the industrial briquette process were discussed.
1999 03 [Abstract][OnlineView][Download 32k] - SHANG Hong shan,HE Guo feng,CHEN Ming bo, WANG Yan fang,JIN Yu he,QU Si jian,GUAN Bei feng(Beijing Research Institute of Coal Chemistry, CCRI,Beijing 100013,China)
The influence factors of compression strength for coking coal slime briquette were studied based on the character of coking coal slime and through orthogonal and single factor experiment. It is confirmed that, compression strength of briquette is basically proportion to the addition amount of inert substance. The cold compression strength could be enhanced if Y f was selected as binder. At the same time, a deep inquisition was also made.
1999 03 [Abstract][OnlineView][Download 30k] - XU Shao liang, ZHANG Hao(Jiaozuo Huaxia Building Energy Institute,Jiaozuo 454001,Chian)
The major influence factor of briquette industry development especial of the boiler briquette industry is the briquette price and briquetting process through analysis the present situation of briquette industry in China. According to the theory and practice of compound egg shape industrial briquette production above major problems can be solved. At present, many of the small cement plants were limit to develop and operate in China. The idle equipment in it can be provided for compound egg shape briquette industrial production and without large scale investment.
1999 03 [Abstract][OnlineView][Download 26k] - ZHANG Yi ying, ZHANG Wen hui, ZHANG Xue jun(Beijing Research Institute of Coal Chemistry, CCRI, Beijing 100013, China)
The situations of materials, production process and usage of activited carbon in domestic are introduced briefly in this paper. New product development of activited carbon is also discussed.
1999 03 [Abstract][OnlineView][Download 20k] - LI Han xu 1, PAN Wei ping 2, Charles LEE 2, YANG Xiao dong 2, John NAPIER 2, John T. RILEY 2(1 Department of Chemical Engineering, Huainan Institute of Technology, Huainan 232001,China) (2 Center for Coal Science, Department of Chemistry
By using TGA FTIR MA technique, the effects of Cl content on the evoluation of HCl during combustion were evaluated. FTIR results indicate that the maximum absorbency of HCl released from medium and high chlorine content coal is basically proportion to the content of chlorine. MS results show that T max1 (at about 300 ℃) of the first HCl peak is independent on the Cl content in coal. A direct relationship between chlorine content and the HCl release (integration of area) was established with good agreement ( R 2=0 997). Three HCl peaks were observed during combustion. This indicates the existence of three mechanisms of chlorine binding and release. The first release peak is due to Cl - ion normally adsorbed on micropore walls. The second emission represents more tightly bond with coal matrix. The third peak is a result of inorganic chlorides in the coal.
1999 03 [Abstract][OnlineView][Download 48k] - LU Jun fu, REN Wei, ZHANG Jian sheng, LI Yong,WANG Xin,LIU Qing, YUE Guang xi(Department of Thermal Engineering, Tsinghua University,Beijing 100084,China)
The pulverized coalfired boiler burned high grade coal will be shut down according to the national energy policy because of its high emissions. It is possible to retrofit PC boiler into circulating fluidized bed boiler where low grade coal can be used as the fuel. Based on detail calculation, a concept design was introduced in this paper. The original condition was considered in this reasonable design, its performance is insured.
1999 03 [Abstract][OnlineView][Download 55k] - GAO Feng ling(Power Plant of Hefei,Hefei 230041,China)
At first the raw coal and fine ash qualities were introduced in this paper. The main technical parameters of the electrostatic precipitator after technical reform and a series of measures in the reform scheme were introduced. The cleaning efficiency of the electrostatic precipitator was increased from 75 1% of the cyclone to 98 93%. A better benefit of environment and economy was gained such as the dust emission reduced 5 957 5 t/a, power consumption reduced 350 MWh/a and power generation can be increased 720 MWh/a.
1999 03 [Abstract][OnlineView][Download 31k] - PI Zhong yuan, ZHANG Ke rui(China National Center for Quality Supervision and Test of Coal, Beijing 100013,China)
This article introduces the method of oxygen bomb combustion cold atomic absorption for determination of the mercury in coal. The determination limit is below 0 13 ng/ml and recovery is 86%～115%. RSD is less than 3 0% and the correlation coefficient is 0 9996. The experimental result is show that the method is simple, convenient and accurate. It is a very practical method for analysis of the trace mercury in coal.
1999 03 [Abstract][OnlineView][Download 36k] - JIA Yan 1,LI Xin lin 2(1 Beijing Research Institute of Coal Chemistry, CCRI, Beijing 100013,China) (2 Jiangsu Electricity Analysis Apparatus Plant, Jiangyan 225500, China)
By using full automatic carbon hydrogen analysis apparatus and coulomb analysis method, the ultimate analysis method of carbon hydrogen in coal was studied. Based on the principal, test condition and experimental method were introduced. The precision and accuracy of test result were discussed. It is confirmed that this analysis method is suitable for ultimate analysis of carbon and hydrogen.
1999 03 [Abstract][OnlineView][Download 35k]
1999 03 [Abstract][OnlineView][Download 7k] - LI Gen dong(Environmental Protection, Safe and Training Center, Coal Industry in China, Yanzhou 273500, China)
A saving water type coal preparation system was put into operation at Dongtan Coal Washery. It can provide the experiences to the same type coal mines for coordination development the society, economy, resource, environment. The ecosystem and environment in coal mine areas could be improved. It can also provide the experiences for coordination development in coal industry.
1999 03 [Abstract][OnlineView][Download 22k] - YANG Guo dong 1, GAO Han jie 2, YUN Jin hu 2, WANG Xing wen 2(1 Department of Environment protection,Shanxi University, Taiyuan 030006,China) (2 Jinyang Coal Washery,Taiyuan 030024, China)
A specific measure of homogeneous management in coal washery was put forward through analysis and sumup the production experience of many years in Jinyang coal washery. For guarantee the regular process operation condition and products even quality the homogeneous management of product quality, raw coal storage and blending washing should be enhanced. The clean coal yield and efficiency can also be improved.
1999 03 [Abstract][OnlineView][Download 14k] - WANG Ge, ZHAO Shou guo, LIN Yu hong(Haerden Coal Gasification Plant, Yilan 154854,China)
The SCS gas cleanup process and production operation of Haerbin Coal Gasification Plant are introduced in this paper. Improvement measures of total sulfur content in gas analysis and desulfurization result of SCS process are also discussed.
1999 03 [Abstract][OnlineView][Download 15k]
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