Process for removal of sulfur compounds from fuel gases
- Richland, WA
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.
- Research Organization:
- Battelle Memorial Institute, Columbus, OH (United States)
- DOE Contract Number:
- AC06-76RL01830
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4086323
- OSTI ID:
- 863062
- Country of Publication:
- United States
- Language:
- English
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fuel
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stripped
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contact
molten
metal
salt
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intimately
mixed
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venturi
constriction
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separated
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major
minor
flow
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passing
regenerator
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steam
carbon
dioxide
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passed
flows
solid
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recombined
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intimately mixed
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fuel gases
particulate matter
fuel gas
carbon dioxide
molten metal
molten salt
metal salt
sulfur compounds
remove sulfur
sulfur removal
strip gas
gas entrains
gas-liquid separator
sulfur compound
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