Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1980-11-24
1983-07-26
Thomas, Earl C.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423560, 423561A, B01D 5334
Patent
active
043953859
ABSTRACT:
A process for removing hydrogen sulfide from a sour gas stream wherein the sour gas stream is contacted with an aqueous alkali metal hydroxide solution containing a stoichiometric excess of the alkali metal hydroxide to provide a sweet gas substantially free of hydrogen sulfide and a partially spent aqueous alkali metal solution. The partially spent aqueous alkali metal solution is contacted with a second sour gas stream in a countercurrent absorber to provide a second sweet gas and a substantially caustic-free aqueous solution of the alkali metal hydrosulfide.
REFERENCES:
patent: 740700 (1903-10-01), Schutz
patent: 2662000 (1953-12-01), Maschwitz
patent: 2747962 (1956-05-01), Heitz et al.
patent: 3245752 (1966-04-01), Fryar et al.
patent: 3839548 (1974-10-01), Jackson
patent: 4151260 (1979-04-01), Woertz
"Simultaneous Utilization of Waste Sodium Hydroxide and Hydrogen Sulfide Containing Waste Gas", Kaguko Kojo, 11, (No. 5), (1967), and English Translation.
X Thorpe's Dictionary of Applied Chemistry at 891, (4th ed., 1950).
Addison William G.
Kerr-McGee Refining Corporation
Thomas Earl C.
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