Two stages dry hydroliquefaction of a subbituminous coal
A low-rank coal was partially depolymerised employing toluene and ZnCl(2) as treatment previous to the hydroliquefaction stage. The conditions used were: a) first stage: toluene/coal ratio 10cc/1g, coal/catalyst ratios 2:1 and 1:1, atmospheric pressure and reflux temperature for 3 hours. b) second stage: partially depolymerised coal loaded 1% Mo processed in absence of solvent in tubing bombs reactors at 400 C, 5 to 30 min residence time, 10 and 15 MPa hydrogen pressure. Conversions to tetrahydrofurane-solubles were found to be 4-29% higher for the two-stages process than for the original coal, ranging from 58.8 to 80.8%.
Bibliographic Reference: Paper presented: International Coal Science Conference, Tokyo (JP), Oct. 1989
Availability: Available from (1) as Paper EN 34428 ORA
Record Number: 198910860 / Last updated on: 1994-12-01
Original language: en
Available languages: en