ABSTRACT
The Babcock and Wilcox company developed a number of processes but is perhaps best known for its coal gasification process. This uses a single-stage, two-zone gasifier. In the lower zone, coal and recycled char contact oxygen (or air) and steam at 1,650 to 1,855°C and molten slag is removed from the base of the zone. The upper zone is cooled to 900°C. A commercial scale oxygen-blown plant was operated in West Virginia in the 1950s, and a pilot-scale air-blown plant was operated in Ohio in the 1960s.
