Spouted bed heating of solids for coal gasification

Patent · Tue Nov 03 00:00:00 EST 1987

OSTI ID:5605423

Smith, R H

This patent describes a method for the gasification of coal in a coal gasification reactor using hot inert heat transfer medium solids. The method includes removing a mixture of solids comprising unreacted char and inert transfer medium from the gasification reactor and the char is burned to supply heat for heating the inert heat transfer medium solids. The improvement comprises: (a) passing a part of the solids directly into to a spouted-bed char combustor and combining a part of the solids with combustion supporting gas before the gas is flowed in step (b) into the combustor; (b) flowing a combustion supporting gas into the combustor at a first point; (c) flowing the gas upwardly in the combustor at a volume and rate such that an upwardly flowing spout of the solids is formed above the first point, but below the volume and rate at which the gas would elutriate a majority of the solids in the combustor; (d) burning char in the combustor; and (e) passing heated inert transfer medium solids from the combustor to the coal gasification reactor.

• Assignee: Atlantic Richfield Co., Los Angeles, CA
• Patent Number(s): US 4704138
• OSTI ID: 5605423
• Resource Relation: Patent File Date: Filed date 6 Dec 1982
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION
PHASE CHANGE MATERIALS
HEATING
CHARS
CHEMICAL REACTORS
COMBUSTION
COMBUSTORS
GAS FLOW
HEAT TRANSFER
CHEMICAL REACTIONS
ENERGY TRANSFER
FLUID FLOW
GASIFICATION
MATERIALS
OXIDATION
PYROLYSIS PRODUCTS
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification