Inventors:
Gaurang B. Haldipur - Hempfield PA
Richard G. Anderson - Penn Hills PA
Peter Cherish - Bethel Park PA
Assignee:
The United States of America as represented by the United States
Department of Energy - Washington DC
International Classification:
F23D 1902
Abstract:
A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.