燃料化学学报2012，Vol.40Issue(7)：776-781,6.
神华煤直接液化残渣超临界溶剂萃取研究
Supercritical solvent extraction of direct liquefaction residue from Shenhua coal
刘朋飞 1张永奇 2房倚天 1赵建涛1
作者信息
- 1. 中国科学院山西煤炭化学研究所,山西太原030001
- 2. 中国科学院研究生院,北京100049
- 折叠
摘要
Abstract
Extraction of direct liquefaction residue from Shenhua coal with three solvents was investigated in a batch autoclave at supercritical conditions to clarify the impacts of pressure, temperature, and extraction time on the yields of heavy liquid and its compositions. It is found that when toluene is used as a solvent, extract time has no obvious effect on yield of heavy liquid, hexane soluble(HS) and asphaltene( A). Extract temperature, extract pressure and mass ratio of solvent to residue have significant effect on yield and composition of residue extract. During the supercritical solvent extraction of liquefaction residue, some other components are transformed into HS and this results in increasing yield of HS. Benzene shows similar extraction ability to toluene while ethanol is poor in dissolving heavy liquid. There are more light components in heavy liquid extracted by ethanol than those by benzene and toluene. Sulfur and ash are mainly enriched in extract residue during extraction process.关键词
液化残渣/重质液体/超临界萃取/萃取残渣Key words
liquefaction residue/ heavy liquid/ supercritical extraction/ extract residue分类
化学引用本文复制引用
刘朋飞,张永奇,房倚天,赵建涛..神华煤直接液化残渣超临界溶剂萃取研究[J].燃料化学学报,2012,40(7):776-781,6.
