Method of removing H.sub.2 S from a gas stream utilizing boron-v

Details Method of removing H.sub.2 S from a gas stream utilizing boron-v Method of removing H.sub.2 S from a gas stream utilizing boron-v

1982-03-30

1983-08-23

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423224, 423225, 423574R, B01D 5334

Patent

active

044003617

ABSTRACT:
A process for removing hydrogen sulfide from sour gas streams is provided wherein the sour gas is passed in cocurrent flow relationship with a liquid alkaline absorption solution containing a vanadium-boron complex characterized by the properties of reacting with the H.sub.2 S thereby oxidizing [HS.sup.- ] to elemental sulfur in conjunction with reduction of the vanadium while the boron constituent is functional to inhibit formation of insoluble vanadium sulfide compounds. Regeneration of the absorption medium by contact with an oxygen containing gas is enhanced by the provision of an iron-polyamine organic acid oxidation catalyst in the absorption liquid. The process is a direct replacement for and may be operated far more economically than conventional Stretford processes.

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"Hydrogen Sulphide Removal by the Stretford Liquid Purification Process" by T. Nicklin & E. Brunner, May 1961.

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