Co-gasification process for hydrocarbon solids and biomass

摘要

A process for the co-gasification of carbonaceous solids (coal, coke) and biomass in which the biomass material is pyrolyzed to provide a biomass pyrolysis oil and biomass char or coke which are then mixed with the carbonaceous solid to form a slurry. This slurry is then heated if necessary to achieve a viscosity which can be processed conveniently in the gasifier. The heat required for pyrolyzing the biomass can conveniently be obtained from the heat exchanger used to cool the hot synthesis gas product emerging from the gasifier.

主权项

1. A process for forming a slurry feed for the gasification to synthesis gas of solid carbonaceous particles and solid biomass, comprising:
pyrolyzing the biomass to form biomass pyrolysis oil and biomass char; and mixing the biomass pyrolysis oil and biomass char with the solid carbonaceous particles to form the slurry feed, the slurry feed comprising a plastic slurry, the solid carbonaceous particles having an average particle size by weight of about 0.01 mm to about 10 mm, wherein the ratio of the solid carbonaceous particles to biomass pyrolysis oil is from 60:40 to 40:60 by weight, and the viscosity of the slurry feed is from 500 to 5000 centipoise (cP).