Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1989-10-31
1991-03-26
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423242, B01J 800, C01B 1700
Patent
active
050027433
ABSTRACT:
The invention relates to a process for the removal of sulfur dioxide from hot flue gases (8) which have been obtained by burning a sulfur-containing substance (4) in a boiler (1). In the process, a substance (6), such as lime or limestone, which reacts with sulfur dioxide to form a solid product is fed into the boiler or into the reaction zone (2) subsequent to the boiler, the hot flue gases (8) are cooled in the reaction zone (2) by feeding into it at maximum such an amount of water as the hot flue gases are capable of evaporating, and the substantially dry solid products are separated (3) in the form of dust (10) from the cooled flue gases. According to the invention, the flue gases (11) thus obtained are scrubbed (13) with an alkaline aqueous solution (15) in order to remove the remaining sulfor dioxide and dust from the flue gases, and part (9') of the cycled scrubbing solution (9) is fed into the boiler (1) or the reaction zone (2) in order to evaporate the water from this solution.
REFERENCES:
patent: 3411864 (1968-11-01), Pallinger
patent: 4309393 (1982-01-01), Nguyen
patent: 4559211 (1985-12-01), Feldman et al.
patent: 4788047 (1988-11-01), Hamala et al.
patent: 4867955 (1989-09-01), Johnson
Alppi Hannu
Kenakkala Timo
Kokkonen Kari
Tuominiemi Seppo
Heller Gregory A.
OY Tampella AB
LandOfFree
Process for the removal of sulfur dioxide from hot flue gases 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 the removal of sulfur dioxide from hot flue gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the removal of sulfur dioxide from hot flue gases will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-615996