Sulfur recovery process using metal oxide absorbent

Patent · Tue Sep 04 04:00:00 EDT 1990

OSTI ID:6404387

Lee, M H; Pendergraft, P T

This patent describes an improvement in a process for the recovery of sulfur. The process comprises introducing a H{sub 2}S containing stream into a Claus plant producing Claus plant effluent; during an absorption period introducing Claus plant effluent into a first absorption zone containing ZnO absorbent and reacting at least H{sub 2}S with ZnO producing sulfided absorbent ZnS and absorber effluent; and concurrently introducing O{sub 2} and a fraction of first absorption zone effluent into a second absorption zone regenerating ZnS to ZnO and returning effluent to the Claus plant.

• Assignee: Amoco Corp., Chicago, IL (USA)
• Patent Number(s): A; US 4954331
• Application Number: PPN: US s 7-296294
• OSTI ID: 6404387
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020800* -- Petroleum-- Waste Management
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ABSORPTION
ADSORBENTS
AIR POLLUTION CONTROL
CHALCOGENIDES
CHEMICAL REACTIONS
CLAUS PROCESS
CONTROL
DESULFURIZATION
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC PHOSPHORS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
POLLUTION CONTROL
SEPARATION EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
ZINC COMPOUNDS
ZINC OXIDES
ZINC SULFIDES