CHARACTERISTIC OF RESIDUES FROM SUPERCRITICAL WATER EXTRACTION OF COAL
(0) IntroductionCoal has great potential as a substitute for petroleum as liquid fuel and chemical sources. In addition to classical techniques, some new concepts 1 are being developed. The supercritical extraction of coal with water for its interesting physical and physico-chemical properties 2, has received more attention and some detailed studies have been reported 3, 4. But little information about extraction residue character in sub-and supercritical solvent was reported. Abundant Jurassic coalfields exist in western of China and play a very important role in the energy supply of China. Because the Jurassic coals were formed in inland gathering environment and subjected to strong oxidation, these coals have the characteristics of typical weak reductive coal. Weak reductive coal exhibits different physicochemical properties from common reductive coal such as its high-inertinite, low-ash and low-sulfurous content, and shows different performances in conversion. The purpose of this work is to study the characteristic of a typical weak reductive coal and its extraction residues by sub-and supercritical water extraction and to make comparison with a reductive coal.
Bo Wu Lijun Jin Haoquan Hu
Institute of Coal Chemical Engineering, Dalian University of Technology, 129 Street, Dalian 116012, P.R.China
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
125-126
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）