Gasification Property of Direct Coal Liquefaction Residue with Steam

Study on the stability of hydro-liquefaction residue of Shenfu sub-bituminous coal

“…Recently, the researches on the utilization of DCLR mainly focus on gasification [14][15][16][17], pyrolysis [18][19][20], hydro-liquefaction [21][22][23][24] and preparation of advanced carbon materials [25][26][27]. Cui et al [14] found that DCLR has good reactivity of gasification because of the catalysis of spent catalyst and enriched minerals.…”

“…Cui et al [14] found that DCLR has good reactivity of gasification because of the catalysis of spent catalyst and enriched minerals. Chu et al [15] thought that the enriched mineral has catalysis on the steam gasification of the DCLR char, but the spent catalyst has no remarkably positive effect. Although the minerals, especially the alkaline earth metal minerals such as CaO, CaS and CaCO 3 , can promote gasification of DCLR as catalyst [16,17], the gasification of DCLR is unfavorable for the high valuable utilization of heavy materials.…”

Co-pyrolysis of lignite and Shendong coal direct liquefaction residue

“…Coal direct liquefaction residue (DLR) seems to be a very interesting material because of its low oxygen content, which facilitate more hydrogen to stabilize radical in co-pyrolysis instead of producing water. Especially, DLR contains half of organic matters with high boiling points like heavy oil, asphaltene and preasphaltene, and another half of carbon-rich materials, minerals and the remaining liquefaction catalyst (Fe 1Àx S) [4]. Therefore, a process to integrate DLR with lignite pyrolysis was put forward for improving the tar yield of lignite pyrolysis.…”

Comparison study of modified asphalt by different coal liquefaction residues and different preparation methods

“…To make CLHP practically using in road paving, a series of studies has been carried out [8][9][10][11]. As the China Shenhua Direct Coal Liquefaction Demonstration Project puts in action, the wise use of the residues becomes more significant and more related studies were carried out [12,13]. This study aimed to understand the difference of the performance of modified asphalts by different CLRs from different coals and different conventional DCL units.…”