Lignin hydrocracking process to produce phenol and benzene

Details Lignin hydrocracking process to produce phenol and benzene Lignin hydrocracking process to produce phenol and benzene

C - Chemistry, Metallurgy

07

C

260/687.4, 260/6

C07C 15/04 (2006.01) C07C 37/54 (2006.01) C07C 39/04 (2006.01) C10G 1/00 (2006.01) C10G 1/08 (2006.01)

Patent

CA 1179374

ABSTRACT A lignin-containing feed material in particulate form is mixed with a process-derived slurrying oil and fed into an ebullated catalyst bed hydrocracking reactor. Reaction conditions are maintained at 650-850°F temperature, 500-1500 psig hydrogen partial pressure and space velocity of 1.0-10 wt. lignin/hr/wt. catalyst. The reaction products are phase separated to recover hydrogen and slurrying oil, and the resulting liquid stream is passed to a thermal hydrodealkylation step. The reacted stream is fractionated to produce phenol and benzene products, along with a heavy alkylated material which is recycled to the hydrodealkyla- tion step to increase the yield of phenol and benzene.

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