Apparatus for and process of converting carbonaceous materials containing sulphur to an essentially sulphur-free combustible gas

Patent · Tue May 31 04:00:00 EDT 1977

OSTI ID:7212406

Collin, P H

A process for the conversion of carbonaceous materials containing sulphur to an essentially sulphur-free combustible gas by gasification comprises partially gasifying the carbonaceous material in a first circulating fluid bed by supplying to said zone adjusted streams of the carbonaceous material, finely divided CaO-containing material and steam, separating solid materials from streams of gases and solid materials leaving said reaction zone, subjecting an adjusted fraction stream of said solid materials to separation of ashes and sulphur purification and then returning this stream to the reaction zone, transferring the rest of the solid materials to a second circulating fluid bed, wherein the solid materials by partial combustion with an adjusted stream of gases containing molecular oxygen is heated to an overtemperature which is adjusted by controlling the content of oxygen of the gas in such a way that the materials after separation from the reaction gases and recirculation to the first fluid bed satisfies the heat requirement for the gasification therein. The invention also covers an apparatus for carrying out said process. 7 claims, 1 figure.

• Assignee: Stora Kopparbergs Bergslags Aktiebolag
• Patent Number(s): US 4026679
• OSTI ID: 7212406
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010404* -- Coal
Lignite
& Peat-- Gasification
02 PETROLEUM
020400 -- Petroleum-- Processing
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL GASIFICATION
CRYOGENIC FLUIDS
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FLUIDIZED BED
FLUIDS
FOSSIL FUELS
FUEL OILS
FUELS
GASIFICATION
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
REMOVAL
SULFUR
THERMOCHEMICAL PROCESSES