Co-liquefaction behavior of wheat straw and Jingou lignite was investigated in an autoclave. The product distribution and sulfur transformation at different temperatures or different blending ratios of wheat straw and lignite were studied. Adding [Bmim]Cl would make the yield of n-hexane insoluble fraction lower

while make gas yield and total conversion higher during co-liquefaction of lignite and wheat straw in sub-critical water. When decreasing the blending ratio of wheat straw

oil yield

yield of n-hexane insoluble fraction

yield of tetrahydrofuran soluble fraction

gas yield and total conversion all decreased. Moreover

adding ionic liquid [Bmim]Cl also could make the relative content of sulfur in the residue increase

while decrease the relative content of sulfur in other products. Furthermore

with increasing temperature

the relative content of organic sulfur in residue and the content of COS and H2S in gas all increased when adding ionic liquid during co-liquefaction of lignite and wheat straw.