Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1997-09-19
2000-05-30
Griffin, Steven P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423224, 42324308, 423551, 423DIG19, B01D 5348, B01D 5350, B01D 5352
Patent
active
06068822&
ABSTRACT:
An uncondensed gas in steam discharged from a turbine in a geothermal power plant and separated from water with a condenser is treated by a desulfurization method comprising the combustion step of combusting the uncondensed gas in the steam to convert hydrogen sulfide in the uncondensed gas to a sulfurous acid gas and the absorption reaction step of bringing a combustion gas coming from the combustion step into gas-liquid contact with an absorbent slurry and further bringing air into air-liquid contact with the absorbent slurry to allow the absorbent slurry to absorb the sulfurous acid gas and undergo oxidation and neutralization to exhaust desulfurized gas and to convert the absorbent slurry to a sulfate slurry, whereby detrimental hydrogen sulfide is removed from the steam exhausted after the use of the steam for power generation in the geothermal power plant.
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patent: 5312609 (1994-05-01), College
Kohl et al. Gas Purification, 4th Edition, Gulf Publishing Co. Houston TX; ISBN 0-87201-314-6; pp. 333-334, 341-349 & 420-421, 1985.
Kotake Shinichiro
Tatani Atsushi
Griffin Steven P.
Mitsubishi Heavy Industries Ltd.
Vanoy Timothy C.
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