Sulfite-oxide process for scavenging hydrogen sulfide

Details Sulfite-oxide process for scavenging hydrogen sulfide Sulfite-oxide process for scavenging hydrogen sulfide

1986-11-10

1989-05-30

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423225, 423231, C01B 1716, C01B 3120

Patent

active

048350435

ABSTRACT:
Adding sodium sulfite in the slurry of the iron oxide slurry process for scavenging hydrogen sulfide described in U.S. Pat. No. 4,246,244, eliminates excessive foaming on start-up, stabilizes the suspension of the oxide particles in the slurry, lessens clogging of reacted particles, which otherwise interferes with cleaning out the reactor vessel, and so materially buffers the slurry as to minimize corrosion of the reactor vessel and piping. Further, adding small amounts of oxygen to the gas stream, which would be expected to cause corrosion, does not do so; instead it prolongs the usefulness of the reactant oxide particles and affords increased acid-stability to the reaction products.

REFERENCES:
patent: 4146569 (1979-03-01), Giammarco et al.
patent: 4246244 (1981-01-01), Fox
patent: 4310497 (1982-01-01), Deschamps et al.
patent: 4634539 (1987-01-01), Fox et al.

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