Coal characteristics and coal chemical utilization direction of a well field in Shanghaimiao mining area,Inner Mongolia
In order to realize the clean and efficient utilization of coal resources in a well field in Shanghaimiao mining area,based on the coal quality testing data of coal exploration work,the coal quality characteristics of the main mineable coal seams in the well field are analyzed,the coal cleanliness level is divided,and the utilization methods of coal for gasification,liquefaction and coking are discussed.The results show that the mineable coal seams in the well field are a kind of moderately metamorphic gas coal,which has the characteristics of low moisture,high volatile,low～medium ash,medium～high sulfur,low～medium phosphorus,extra low～low chlorine,medium bonding,high thermal stability,high softening temperature,easy～difficult grinding,medium and high calorific value.The cleanliness of the raw coal in the well field is poor,which is poor-medium clean coal,and the clean coal grade of floating coal is poor-good clean coal,and the main unfavorable factors for clean coal utilization are high coal ash yield and sulfur content.No.1 and No.3-1 coal meet the second-level index of coal blending for coking,the rest can be used as coal blending for coking after flotation.The coal quality characteristics of each coal seam do not meet the coal requirements for direct liquefaction,fixed bed gasification,fluidized bed gasification,coal water slurry gasification in entrained-flow gasifier,and dry feed entrained flow bed gasifier.
Shanghaimiao mining areaCoal rock and coal qualityCoal for liquefactionCoal for gasificationClean utilization
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