Gasification process and system using dryer integrated with water-gas shift catalyst

摘要

The present invention relates to a gasification process and system, wherein a dryer integrated with a water-gas-shift catalyst is disposed in front of a gasifier.

主权项

1. A gasification method, comprising the steps of:
a) supplying a water-containing carbonaceous feedstock into a dryer integrated with a water-gas-shift reaction catalyst; b) drying the water-containing carbonaceous feedstock in the dryer to produce a steam while performing a water-gas-shift reaction using the steam as a reactant; c) solid-gas-separating the dried carbonaceous feedstock and the water-gas-shift reaction product; d) gasifying the dried carbonaceous feedstock in the presence of a gasifying agent to obtain a gasification product; and e) recycling at least a part of the gasification product into the dryer in the step b) to provide an energy source for drying the water-containing carbonaceous feedstock.