Process for separating SO.sub.2 from a current of gas containing

Details Process for separating SO.sub.2 from a current of gas containing Process for separating SO.sub.2 from a current of gas containing

1979-02-15

1980-12-30

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423524, C01B 1782

Patent

active

042423210

ABSTRACT:
A process is described for separating SO.sub.2 from a current of gas containing the same, at least intermittently, in a concentration which is impermissibly high for discharge into the ambient atmosphere, with attendant production of sulfuric acid by the nitrogen oxide process, in which latter process the SO.sub.2 -containing gas initially flows through a dentriation zone, or first through a pretreatment zone forming a first sector of an SO.sub.2 -processinbg zone and then through the denitration zone, thereafter through the main sector of the SO.sub.2 -processing zone, and subsequently through a nitrogen oxide absorption zone, in the course of which flow it is brought into contact in at least one of the two sectors of the SO.sub.2 -processing zone with dilute acid having a H.sub.2 SO.sub.4 -concentration of less than 70% by weight (55.degree. Be) which acid is circulated through the sector concerned of this latter zone, while in the absorption zone the nitrogen oxides released in the denitration zone are absorbed by sulfuric acid, and nitrose-containing acid having a H.sub.2 SO.sub.4 -concentration of 70 to 80% by weight (55.degree. to 63.5.degree. Be) is drawn off from the absorption zone and fed into the denitration zone, which process further comprises

REFERENCES:
patent: 1486757 (1924-03-01), Jensen
patent: 1800786 (1931-04-01), Fairlie
patent: 1889973 (1932-12-01), Miller
patent: 2053834 (1936-09-01), Kachkaroff et al.
Apachow et al., Chem. Zentralblatt 127, 14151 (1956).
Riegel Industrial Chemistry, 5th edition, Reinhold Publishing Corp., NY, NY, 1949, pp. 1-11.

Affiliated with

Also associated with

Rating

Process for separating SO.sub.2 from a current of gas containing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for separating SO.sub.2 from a current of gas containing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for separating SO.sub.2 from a current of gas containing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-7080