Control of thiosulfate in wet desulfurization process solutions

Patent · Tue Jan 04 04:00:00 EST 1983

OSTI ID:6483901

Castrantas, H M

A method for controlling the concentration of dissolved thiosulfate byproduct which forms in a wet desulfurization process, by introducing a peroxygen chemical into its recirculating aqueous absorption medium. A peroxygen chemical such as aqueous hydrogen peroxide is introduced into the recirculating aqueous alkaline absorption medium, preferably after its regeneration, in an amount sufficient to maintain the concentration of thiosulfate byproduct below a saturation concentration. The method is applicable to cyclic wet desulfurization processes, used to recover elemental sulfur from H/sub 2/S-containing gas streams, in which the absorption medium contains a regenerable oxidizing agent and is subject to thiosulfate byproduct buildup.

• Assignee: Fmc Corp
• Patent Number(s): US 4367212
• OSTI ID: 6483901
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
ABSORPTION
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
DISPERSIONS
ELEMENTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
MIXTURES
NONMETALS
OXYGEN COMPOUNDS
PEROXIDES
RECOVERY
RECYCLING
REGENERATION
SOLUTIONS
SULFUR
THIOSULFATES
WASTES