Carbonyl sulfide abatement in fluids

Details Carbonyl sulfide abatement in fluids Carbonyl sulfide abatement in fluids

1993-11-05

1996-06-04

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423224, 423DIG19, B01D 5348

Patent

active

055230695

ABSTRACT:
A method for removing carbonyl sulfide from fluids, particularly gases, involves contacting them with alkaline aqueous solutions containing peroxide and hindered amine. The sulfur products so formed can then be separated from the fluid. In one embodiment, gas containing carbonyl sulfide is cycled through a wet scrubber containing a solution of hydrogen peroxide and methyldiethanolamine, triethylamine, dimethylmonoethanolamine, diethylmonoethanolamine, triethanolamine, 2-amino-2-meth-yl-1-propanol, and/or 1,8-p-menthanediaminemethyldiethanolamine at a pH of about 9 to 11, e.g., about 10. Methyldiethanolamine is preferred in one embodiment. A dispersant such as a water-soluble polymer having a molecular weight of about 500 to 100,000 may optionally be employed in the solution. Abatement of greater than 90% of the carbonyl sulfide is achieved in preferred embodiments.

REFERENCES:
patent: 3647683 (1972-03-01), Kelly et al.
patent: 3716620 (1973-02-01), Deschamps et al.
patent: 4143119 (1979-03-01), Asperger et al.
patent: 4163044 (1979-07-01), Woertz
patent: 4292293 (1981-09-01), Johnson et al.
patent: 4351812 (1982-09-01), Correll et al.
patent: 4363215 (1982-12-01), Sharp
patent: 4388194 (1983-06-01), Hills
patent: 4499059 (1985-02-01), Jones et al.
patent: 4548708 (1985-10-01), Schwarzer et al.
patent: 4808765 (1989-02-01), Pearce et al.
patent: 4967559 (1990-11-01), Johnston

Affiliated with

Also associated with

Rating

Carbonyl sulfide abatement in fluids does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Carbonyl sulfide abatement in fluids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbonyl sulfide abatement in fluids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-381623