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《Coal Science and Technology》 2014-01
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Study on Super Clean Coal Preparation Technique with 1 /3 Coking Coal from Xiaokang Village by Heat Extraction

CUI Yong-mei;HU Yong-qi;XU Yong-quan;YUAN Zhong-kai;LI Li-ye;ZHANG Zhao-xiang;ZHAO Feng-yun;School of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology;Hebei Iron and Steel Technology Research Institute;  
In order to obtain the optimal technique conditions for preparing the super clean coal,taking industry washing oil as solvent,super clean coal was prepared by heat extraction with 1 /3 coking coal from Xiaokang Village. The initial pressure,residence time,coal particle size,cold- hot filtering method,volume ratio of solvents and other factors were investigated on the properties of coal heat extraction and the industry washing oil recycling times was studied. The results showed that in an inert environment,extraction and filtration temperature was 380 ℃,coal particle size was 0. 177 mm,residence time was 10 min,the ratio of solvent volume and coal mass was 6∶ 1( mL / g),the super clean coal extraction yield was 66. 8%. The industry washing oil after recovery still had excellent heat extraction performance. After recycled four times,the super clean coal extraction yield was still bigger than 60%.
【Fund】: 河北省自然科学基金资助项目(B2011208089);; 河北省科技支撑计划资助项目(13200216D);; 河北科技大学博士科研启动基金资助项目(QD201045);; 河北科技大学校立科研基金资助项目(XL201116)
【CateGory Index】: TQ536
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