Gas treating process and composition
This patent describes a process for the removal of H/sub 2/S from a sour gaseous stream. The process consists of: (a) contacting the sour gaseous stream in a contacting zone with an aqueous reaction solution, at a temperature not greater than about 160{sup 0}C, the reaction solution comprising an effective amount of vanadium V-containing ions to oxidize H/sub 2/S to elemental sulfur and being substantially free of anthraquinone disulfonate, and producing a sweet gas stream and an aqueous solution having a pH of 8-11 and containing sulfur and vanadium IV-containing ions, the reaction solution further comprising an amount of phosphate ions sufficient to provide a molar ratio of phosphate ions to vanadium IV-containing ions produced in solution of at least 0.1; (b) removing sulfur from the aqueous solution, producing an aqueous solution having reduced sulfur content; (c) regenerating aqueous solution having reduced sulfur content in a regenerating zone and producing regenerated reactant in the solution; and (d) returning regenerated solution from step (c) to the contacting zone for use as aqueous reaction solution therein.
- Assignee:
- Shell Oil Co., Houston, TX
- Patent Number(s):
- US 4840782
- OSTI ID:
- 5567342
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
030300* -- Natural Gas-- Drilling
Production
& Processing
030800 -- Natural Gas-- Environmental Aspects
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MIXTURES
NATURAL GAS
OXIDATION
POLLUTION CONTROL
REMOVAL
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS