Process for removal of sulfur compounds from fuel gases. [US DOE]
Fuel gases such as those produced in the gasification of coal are stripped of sulfur compounds and particulate matter by contact with molten metal salt. The fuel gas and salt are intimately mixed by passage through a venturi or other constriction in which the fuel gas entrains the molten salt as dispersed droplets to a gas-liquid separator. The separated molten salt is divided into a major and a minor flow portion with the minor flow portion passing on to a regenerator in which it is contacted with steam and carbon dioxide as strip gas to remove sulfur compounds. The strip gas is further processed to recover sulfur. The depleted, minor flow portion of salt is passed again into contact with the fuel gas for further sulfur removal from the gas. The sulfur depleted, fuel gas then flows through a solid absorbent for removal of salt droplets. The minor flow portion of the molten salt is then recombined with the major flow portion for feed to the venturi.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4086323
- OSTI ID:
- 6529873
- Resource Relation:
- Patent File Date: Filed date 21 Jun 1977; Other Information: PAT-APPL-808,488
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FUEL GAS
DESULFURIZATION
SULFUR
RECOVERY
SULFUR COMPOUNDS
REMOVAL
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CARBONATES
COAL GASIFICATION
MOLTEN SALTS
PARTICLES
SCRUBBERS
CARBON COMPOUNDS
CHEMICAL REACTIONS
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FLUIDS
FUELS
GAS FUELS
GASES
GASIFICATION
NONMETALS
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
SALTS
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
010402 - Coal
Lignite
& Peat- Purification & Upgrading