Recycling of waste heat boiler effluent to an oxygen-enriched claus reaction furnace
A method of recovering sulfur from a feed gas stream containing hydrogen sulfide combusted with an oxygen-enriched gas in a Claus reaction furnace zone is described, comprising: dividing combustion effluent as it is received directly from a waste heat boiler associated with the Claus reaction furnace zone into a first and a second stream; introducing the first stream into a first condensation zone for cooling, and condensation and removal of sulfur; introducing effluent from the first condensation zone into at least one stage of sulfur formation and recovery in a catalytic Claus reaction zone; introducing the second stream into a second condensation zone for cooling, and condensation and removal of sulfur, wherein the temperature of the effluent of the second condensation zone is less than the temperature of the effluent of the first condensation zone; and introducing effluent from the second condensation zone into the Claus reaction furnace zone to moderate the temperatures therein.
- Assignee:
- Amoco Corp., Chicago, IL
- Patent Number(s):
- US 4756900
- OSTI ID:
- 6817940
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
BOILERS
CHALCOGENIDES
CHEMICAL REACTIONS
CLAUS PROCESS
COMBUSTION PRODUCTS
CONTROL
COOLING
DESULFURIZATION
ELEMENTS
EMISSION
EVAPORATION
EXHAUST GASES
FLUIDS
FURNACES
GASEOUS WASTES
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NONMETALS
OXYGEN
PHASE TRANSFORMATIONS
POLLUTION CONTROL
RECOVERY
RECYCLING
SULFIDES
SULFUR
SULFUR COMPOUNDS
WASTE HEAT BOILERS
WASTES