Process of regenerating alkali carbonate solutions formed by the

Details Process of regenerating alkali carbonate solutions formed by the Process of regenerating alkali carbonate solutions formed by the

1978-07-06

1981-03-24

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423232, 423233, B01D 5334

Patent

active

042580196

ABSTRACT:
A process for the selective removal of hydrogen sulfide from a gas containing hydrogen sulfide and carbon dioxide wherein said gas is contacted at superatmospheric pressure with an alkali metal carbonate solution, the resultant solution which contains hydrosulfide and bicarbonate is subjected to pressure reduction, the total alkali metal bicarbonate content of the resultant solution is adjusted so that it is at least 55% of the total alkali content of the solution and the said solution is then stripped and recycled to the hydrogen sulfide absorption step.

REFERENCES:
patent: 1918153 (1933-07-01), Wagner
patent: 2094070 (1937-09-01), Hultman et al.
patent: 3934012 (1976-01-01), Schievelbein

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