Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1975-12-03
1978-03-14
Vertiz, O. R.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423422, 423428, C01B 1700, C01D 700, C01D 1508, C01D 1722
Patent
active
040791190
ABSTRACT:
There is disclosed a process for reducing the loss of sodium values in a system for removing sulfur dioxide from a gas by the use of an absorption-desorption cycle employing aqueous sodium sulfite as the essential absorption solution. Sodium sulfate and/or sodium thiosulfate build-up in the system is avoided and the loss of sodium values reduced by subjecting sodium sulfate and/or sodium thiosulfate-containing material to chemical reduction to form a product containing a substantial amount of sodium carbonate. Preferably, the reduced product is subjected to carbonation followed by reaction of the bicarbonate and bisulfide components of the mixture to give a resulting liquid which is more suitable for use in the absorption-desorption process. By-product gases can be incinerated to produce sulfur dioxide-containing gases which can be charged to the sulfur dioxide absorption zone. Sodium thiosulfate can be purged from the absorption-desorption system by treating a purge stream from the desorption zone of the process.
REFERENCES:
patent: 3401010 (1968-09-01), Guerrier
patent: 3728433 (1973-04-01), Urban
patent: 3790660 (1974-02-01), Earl
patent: 3932587 (1976-01-01), Granthan et al.
patent: 3966891 (1976-06-01), Renault et al.
patent: 3971844 (1976-07-01), Schneider
Nicholson Norman E.
Scarlett John
Davy Powergas Inc.
Heller Gregory A.
Vertiz O. R.
LandOfFree
Sulfur dioxide removal process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sulfur dioxide removal process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sulfur dioxide removal process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2230774