Upgrading of Condensibles from Coal Devolatilization.

摘要

This project has emphasized the removal of basic nitrogen-containing compounds from condensible liquids that are by-products of mild coal devolatilization processes. Significant amounts of representative condensible products have been difficult to obtain. Products examined during the course of this project have included liquids from the United Coal Company Research Corporation's mile gasification process development unit (UCCRCMGU) in Bristol, VA; from the KILnGAS commercial module being operated by the Allis-Chalmers Coal Gas Corporation in East Alton, IL; and from the process being tested by SGI International at the Salem Furnace Company in Pittsburgh, PA. The UCCRC MGU is capable of handling up to 1500 lb/d of coal at temperatures up to 1500/degree/F under pressure conditions ranging from atmospheric to a mild vacuum. The KILnGAS commercial module is a 600 ton/d plant and uses a ported and pressurized rotary kiln to produce fuel gas from coal. The SGI system, which is a relatively small, batch-fed, atmospheric pyrolyzer with a nominal operating temperature of 1000/degree/F, and a residence time of 20 min, is capable of feeding 50 lb of coal per batch. (ERA citation 13:042577)