Solution removal of H sub 2 S from gas streams

Patent · Mon Mar 02 23:00:00 EST 1992

OSTI ID:5230525

Van Kleeck, D A; Fong, H L; Swanson, S J

This patent describes a process for the removal of H{sub 2}S from a sour gaseous stream. It comprises feeding the sour gaseous stream to a first contacting zone, and intimately contacting the sour gaseous stream in the first contacting zone with an aqueous solution; passing the gas-solution mixture from the third contacting section through an addition contact section of the second-contact zone and contacting the gas-solution mixture with aqueous reactant solution containing solubilized ferric chelate of the acid or acids and solubilized ferrous chelate of the acid or acids, and forming a gas-solution mixture having an increased solution to gas ratio to provide additional wetting liquid for wetting channel surfaces following the addition contact section in the second contact zone; and separating the gas having reduced H{sub 2}S content from gas-reactant solution mixture produced.

• Assignee: Shell Oil Co., Houston, TX (United States)
• Patent Number(s): US 5093094; A
• Application Number: PPN: US 7-754292
• OSTI ID: 5230525
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
CATALYTIC CONVERTERS
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL REACTION KINETICS
CONTROL
EQUIPMENT
FLUE GAS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
KINETICS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REACTION KINETICS
SULFIDES
SULFUR COMPOUNDS
WASTES