Process and device for removal of H.sub.2 S

Details Process and device for removal of H.sub.2 S Process and device for removal of H.sub.2 S

1992-01-03

1994-05-24

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423226, 423228, 423229, 423542, 4235731, 422168, 261152, 95235, C01B 1716

Patent

active

053146719

ABSTRACT:
Process for removing hydrogen sulfide at low concentration in a gas containing water vapor. The gas is cooled to a temperature below the dew point of water, which condenses and separates the water. The dry gas is scrubbed free of hydrogen sulfide by an H.sub.2 S-absorbent solvent forming a purified gas. The purified gas is contacted and rehydrated with heated water so that the water content as water vapor corresponds to a mass flow rate of water substantially equal to the mass flow rate of the water present in the H.sub.2 S-containing gas before cooling. An apparatus for carrying out the process is disclosed.

REFERENCES:
patent: 4308243 (1981-12-01), Castel et al.
patent: 4431617 (1984-02-01), Farin
patent: 4452763 (1984-06-01), van de Kraats et al.
patent: 4869884 (1989-09-01), Riggs, Jr.
patent: 5066314 (1991-11-01), Leites et al.
patent: 5085839 (1992-02-01), Celaya et al.
patent: 5145658 (1992-09-01), Chao

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