Recovering sulfur from gas streams containing hydrogen sulfide

Details Recovering sulfur from gas streams containing hydrogen sulfide Recovering sulfur from gas streams containing hydrogen sulfide

1977-03-25

1978-09-12

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423242, C01B 1700

Patent

active

041138490

ABSTRACT:
Process for the recovery of sulfur from gas streams containing hydrogen sulfide comprising the steps of reacting a portion of the hydrogen sulfide with sulfur dioxide in a Claus reaction to form sulfur, removing the sulfur, incinerating the residual hydrogen sulfide in the resulting gas stream to sulfur dioxide, absorbing the sulfur dioxide in the incinerated gas stream in an aqueous absorbent solution, stripping the sulfur dioxide from the aqueous absorbent solution, recycling the stripped sulfur dioxide for reaction with succeeding portions of hydrogen sulfide in the incoming gas stream, re-contacting the stripped aqueous absorbent solution with succeeding portions of the incinerated gas stream to absorb additional sulfur dioxide, regenerating a portion of the aqueous absorbent solution to remove heat stable sulfur oxyanions therefrom by contacting said solution with an anion exchange resin and re-contacting the regenerated aqueous absorbent solution with said incinerated gas stream to absorb additional sulfur dioxide.

REFERENCES:
patent: 3798316 (1974-03-01), Beavon
patent: 3879521 (1975-04-01), Anderson
patent: 3896215 (1975-07-01), Bratzler et al.
patent: 3911093 (1972-10-01), Sherif
patent: 3914387 (1975-10-01), Von Jordan
patent: 3962405 (1976-06-01), Annesser

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