Novel process for depolymerization of coal to C(sub 2)-C(sub 4) hydrocarbons. Final report, 1 September 1989--31 August 1993

摘要

A principal objective of this work was to study the conversion of coal to C(sub 2) (-) C(sub 4) hydrocarbons in a two-stage reactor system. Coal was converted to liquids at 440C in a stirred batch autoclave using tetralin as the hydrogen donor solvent. The liquids produced were separated from the unreacted coal and ash by filtration. The liquids were then fed into a second stage fixed bed reactor containing sulfided Ni-Mo/Al(sub 2)O(sub 3) and SiO(sub 2(-))Al(sub 2)O(sub 3) catalyst. The liquids were hydrocracked on the dual functional catalyst giving high yields of C(sub 2) (-) C(sub 4). hydrocarbons. The pressure was 1800 psi and the temperatures were in the range of 425 to 500C. The kinetic parameters of the conversion of coal liquids to gases were determined. The activation energy was determined.