Removal of mercury from gas streams using hydrogen sulfide and a

Details Removal of mercury from gas streams using hydrogen sulfide and a Removal of mercury from gas streams using hydrogen sulfide and a

1976-05-18

1977-08-23

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

423561B, 55 72, B01D 4700, B01J 800, C01B 1720

Patent

active

040440982

ABSTRACT:
A process is provided in which a gas, particularly a sulfur-free natural gas, that contains mercury is contacted with an amount of hydrogen sulfide in excess of the stoichiometric amount of hydrogen sulfide necessary to precipitate sulfides of mercury with further contact with an amine that is an absorption agent for hydrogen sulfide. Hydrogen sulfide precipitates sulfides of mercury from the gas stream while the amine absorbs the excess hydrogen sulfide to produce a gas stream of minimal sulfur content with a reduced mercury content that can be below the range of detection.

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Oil & Gas, 64, 10/24/1966, pp. 110-118.

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