Gas scrubbing method

Patent · Tue May 03 04:00:00 EDT 1988

OSTI ID:7230510

Rose, J T; Stockman, J M

This patent describes a process for scrubbing flue gasses containing sulfur dioxide for the removal thereof which comprises (1) contacting the flue gases with an aqueous medium containing a material which will react with the sulfur dioxide to form either calcium sulfate or calcium sulfite or both; and (2) separating the insoluble either calcium sulfate or calcium sulfite or both from the aqueous medium. The improvement is adding to the aqueous medium prior to contact with the gas a water-soluble surfactant in an mount sufficient to increase sulfur dioxide removal, the surfactant is selected from the group consisting of a polyoxpropylene polyoxyethylene block polymer, alkyl phenol polyethylene oxide polymer, alkyl phenoxy polyethoxyenthanol polymer, alkyl phenol polyethylene glycol ether polymer, and alkyl phenol polyethylene oxide polymer.

• Assignee: Betz Labs., Inc., Trevose, PA
• Patent Number(s): US 4741890
• OSTI ID: 7230510
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
AQUEOUS SOLUTIONS
AROMATICS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
DISPERSIONS
FLUE GAS
GASEOUS WASTES
HYDROXY COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENOLS
POLLUTION CONTROL
POLYMERS
PROCESS SOLUTIONS
REMOVAL
SCRUBBING
SOLUTIONS
SULFATES
SULFITES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACTANTS
WASTES