Regenerative sulfur dioxide scrubbing system

Details Regenerative sulfur dioxide scrubbing system Regenerative sulfur dioxide scrubbing system

1975-05-27

1977-02-15

Vertiz, Oscar R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423428, C01B 1700, C01B 700

Patent

active

040083101

ABSTRACT:
An aqueous regenerative SO.sub.2 scrubbing system is provided which has a scrubbing loop and a regeneration loop. The scrubbing loop contains a scrubber through which a thiosulfate-rich aqueous solution containing an alkali metal carbonate continuously circulates under sulfite-forming conditions. The sulfute in the spent absorbent solution is converted to thiosulfate in a sulfite conversion zone located in the scrubbing loop but outside the scrubber. The sulfite conversion is effected by means of a reducing agent containing a water soluble alkali metal hydrosulfite as the essential sulfite reducing agent. The regeneration loop serves to convert the incremental portion of thiosulfate formed in the scrubbing loop to H.sub.2 S and an aqueous solution containing the required amounts of alkali metal carbonate and of alkali metal hydrosulfide for the scrubbing loop. By means of a two-step process in the regenerator, the proper ratio of alkali metal hydrosulfide to carbonate for maintaining the system in the correct internal balance of reagents is established, whereby stable continuous operation of the entire system is achieved.

REFERENCES:
patent: 3574097 (1971-04-01), Urban
patent: 3649183 (1972-03-01), Urban
patent: 3728433 (1973-04-01), Urban
patent: 3764653 (1973-10-01), Urban
patent: 3859416 (1975-01-01), Urban
patent: 3937787 (1976-02-01), Gorin et al.

Affiliated with

Also associated with

Rating

Regenerative sulfur dioxide scrubbing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Regenerative sulfur dioxide scrubbing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regenerative sulfur dioxide scrubbing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1438051