First Author: X. Li

Correspondence Author: 李显

Co-author: Li Xian,Hu Haoquan, Jin Lijun, Hu, Shuxun, Wu Bo

Journal: FUEL PROCESSING TECHNOLOGY

Affiliation of Author(s): Dalian Univ Technol, Inst Coal Chem Engn, State Key Lab Fine Chem

Place of Publication: NETHERLANDS

Discipline: Science

Document Type: J

Volume: 89

Issue: 11

Page Number: 1090-1095

ISSN No.: 0378-3820

Key Words: Coal liquefaction; Multi-stage; Residue

Date of Publication: 2008-09-11

Abstract: Single and multi-stage liquefaction of Shenhua (SH) bituminous coal and re-liquefaction of its liquefaction residue (SHLR) were carried out in an autoclave reactor to investigate the essential approach for promoting oil yield and conversion in SH coal direct liquefaction (SHDL). The multi-stage liquefaction includes pretreatment, keeping the reactor at 250 degrees C for 40 min before heating up to the reaction temperature, and two-stage liquefaction processes consisting of low temperature stage, 400 degrees C, and high temperature stage, 460 degrees C. The results show that the pretreatment ha