Reducing the consumption of anthraquinone disulfonate in stretford solutions

Patent · Tue Feb 16 04:00:00 EST 1982

OSTI ID:5178174

Fenton, D M; Vaell, R P

A process for treating a hydrogen sulfide-containing hydrogenated claus process tail gas to convert the hydrogen sulfide to elemental sulfur in which said gas is contacted with an aqueous alkaline solution containing a water-soluble metal vanadate, a water-soluble anthraquinone disulfonate, and a watersoluble, inorganic fluoride, borate, or phosphate complexing agent to yield an effluent gas to reduced sulfur content. The solution is thereafter regenerated by contact with an oxygencontaining gas, elemental sulfur is recovered from the solution, and the regenerated solution is recycled to the gas-contacting step. The complexing agent contained in the solution reduces the chemical consumption of the anthraquinone disulfonate.

• Assignee: Union Oil Co of California
• Patent Number(s): US 4315903
• OSTI ID: 5178174
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320302 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Materials
ALKALI METAL COMPOUNDS
ANTHRAQUINONES
AQUEOUS SOLUTIONS
AROMATICS
BORATES
BORON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CLAUS PROCESS
CONTROL
DESULFURIZATION
DISPERSIONS
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
GASEOUS WASTES
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MANAGEMENT
MATERIALS RECOVERY
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
POLLUTION CONTROL
PROCESSING
QUINONES
RECOVERY
RECYCLING
REGENERATION
SODIUM COMPOUNDS
SODIUM PHOSPHATES
SOLUTIONS
STRETFORD PROCESS
SULFIDES
SULFUR
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADATES
VANADIUM COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES