Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1991-09-06
1992-09-08
Straub, Gary P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423228, 423DIG6, 422168, 422173, C01B 1716, C01B 3120, B01D 5000
Patent
active
051456583
ABSTRACT:
A process and apparatus is disclosed for reclaiming of heat of reaction energy from an alkaline scrubbing solution used in acid gas removal processes and apparatus therefor. The heat recovered is used to produce steam which may then be employed to assist in steam stripping the rich scrubbing solution to effect regeneration thereof. The rich scrubbing solution containing heat of reaction thermal energy is passed through a rich-reflux reboiler to recover a part of the energy to produce at least a part of the stripping steam, and then through a rich-lean reboiler under a reduced pressure to produce additional quantities of stripping steam. A reduction in steam requirements for regeneration of the rich alkaline scrubbing agent of at least 10% is thereby realized.
REFERENCES:
patent: 3851041 (1974-11-01), Eickmeyer
patent: 4160810 (1979-07-01), Benson et al.
patent: 4409191 (1983-10-01), Osman
Olsen, John C. Unit Processes & Principles of Chemical Engineering, D. Van Nostrand Company 1932 pp. 1-3.
Eickmeyer & Associates, Inc.
Straub Gary P.
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