Reducing the consumption of anthraquinone disulfonate in Stretford solutions

Patent · Tue Jun 03 04:00:00 EDT 1980

OSTI ID:6002046

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 water soluble phenolic complexing agent or a water-soluble carboxylic complexing agent, to yield an effluent gas of reduced sulfur content. The solution is thereafter regenerated by contact with an oxygen-containing gas, elemental sulfur is recovered from the solution, and the regenerated solution is recycled to the gascontacting 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 4206194
• OSTI ID: 6002046
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ANTHRAQUINONES
AROMATICS
CHEMICAL REACTIONS
CLAUS PROCESS
CONSUMPTION RATES
DESULFURIZATION
ELEMENTS
FLUIDS
GASEOUS WASTES
GASES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
QUINONES
REAGENTS
RECOVERY
RECYCLING
REGENERATION
STRETFORD PROCESS
SULFUR
TRANSITION ELEMENT COMPOUNDS
VANADATES
VANADIUM COMPOUNDS
WASTES