Two-reactor, high-recovery sulfur plant and process

Details Two-reactor, high-recovery sulfur plant and process Two-reactor, high-recovery sulfur plant and process

1984-09-07

1989-04-18

Doll, John

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

C01B 1704

Patent

active

048225916

ABSTRACT:
Sulfur is recovered from an acid gas stream comprising hydrogen sulfide by successively reducing the hydrogen sulfide in a thermal reaction zone, a first position Claus catalytic conversion zone operated above the sulfur deposition point, and a second position Claus catalytic conversion zone operated under conditions effective for producing and depositing elemental sulfur on the catalyst. Periodically, the reactor in the second position is switched to the first position, the reactor in the first position having previously been preconditioned thereby avoiding a temporary increase in emissions after switching.

REFERENCES:
patent: Re28830 (1976-05-01), Hunt, Jr. et al.
patent: 2767062 (1956-10-01), Duecker
patent: 3873679 (1975-03-01), Berry et al.
patent: 4088744 (1978-05-01), Reed et al.
patent: 4391790 (1983-07-01), Palm et al.
patent: 4462977 (1984-07-01), Reed
patent: 4482532 (1984-11-01), Cabanaw

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