【摘要】 在一般溶剂抽提试验基础上 ,用石油裂解副产品 -O型溶剂在温和条件下对兖州烟煤进行了详细的抽提试验研究 ,对影响提产率的温度、时间和溶煤比 ,对添加剂、抽提预处理煤的溶剂和抽提煤的二次抽提进行了实验研究。结果表明 :(1)试验用石油裂解副产品是一种高效煤溶剂抽提物质 ;(2 )适宜抽提条件为 :15 0℃ ,抽提时间 1h ,溶煤比为 2∶1;(3)添加适量的盐酸和硝酸可提高溶剂抽提率 ;(4 )用稀硝酸预处理煤可大大提高煤的抽提率 ;(5 )二次抽提可提高煤的总抽提率。本研究对于煤液化和纯煤制备具有一定意义更多还原

【Abstract】 Solvent extraction of Yanzhou bituminous coal with splitted by poduct of petroleum was investigated under mild condition in detail on the basis of general solvent extraction experiments. The main influencing factors of extraction yield,such as temperature,time of extraction and solvent coal ratio and the effect on additives,solvent extraction of pretreatment coal and second extraction of extracted coal have been studied.The results show:(1)the splitted by product of petroleum is an efficient solvent for coal extraction;(2)the suitable conditions of extraction are that temperature is 150℃,solvent coal ration is 2∶1,extraction time is 1.5h;(3)additives of hydrochloric acid or nitric acid added during extraction could improved extraction yield of coal;(4)the pretreatment of coal with diluent HNO 3 before extraction could greatly increase the yield of coal extraction;(5)the higher total extraction yield could be obtained with two times extraction.This study can help development of coal liquefaction and pure coal preparation.更多还原