H sub 2 S removal process
This patent describes a process for the removal of hydrogen sulfide from a sour gaseous stream. It comprises feeding the sour gaseous stream to a vertically disposed walled reaction zone containing an aqueous reactant solution, at a temperature below the melting point of sulfur, the aqueous reactant solution containing an amount of solubilized oxidizing agent sufficient to reduce the concentration of H{sub 2}S in the stream; passing the gaseous stream and aqueous reactant solution concurrently upward through the reaction zone, passing the purified gas, sulfur, and partially spent solution admixture to a gas-liquid separation zone comprising an open separation space and a liquid reservoir in liquid flow communication with the entrance of the reaction zone, separating the purified gas, sulfur, and partially spent solution admixture in the separation zone into a purified gas stream and partially spent solution containing sulfur; and collecting the combining partially spent solution containing sulfur with and forming a part of the aqueous reactant solution in the reservoir; removing aqueous reactant solution from the reservoir, and regenerating at least a portion thereof to produce a regenerated reactant solution, periodically or continuously recovering sulfur from aqueous reactant solution or regenerated reactant solution; concurrently maintaining the aqueous reactant solution liquid level is the reservoir at a level sufficient to provide aqueous reactant solution by gravity to the entrance of the reaction zone.
- Assignee:
- Shell Oil Co., Houston, TX (United States)
- Patent Number(s):
- US 5094824; A
- Application Number:
- PPN: US 7-620981
- OSTI ID:
- 5203722
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020800 -- Petroleum-- Waste Management
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
AQUEOUS SOLUTIONS
CATALYSTS
CATALYTIC CONVERTERS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
DISPERSIONS
EQUIPMENT
FLUE GAS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MIXTURES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
WASTES