Sulfur dioxide removal from gases using a modified lime

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

423555, C01B 1700, C01F 1146

Patent

active

050826395

ABSTRACT:
A wet scrubbing process for removing sulfur dioxide from combustion gases uses an aqueous slurry containing calcium components resulting from the slaking of lime, with the slaked lime formed by mixing lime with water containing a calcium sulfur-oxide salt. The presence of the calcium sulfur oxide salt in the slaking water results in a more easily dewatered sludge that is subsequently removed from the wet scrubbing system.

REFERENCES:
patent: 783570 (1905-02-01), Ellis et al.
patent: 1277855 (1918-09-01), Carson
patent: 1579766 (1926-04-01), Hite
patent: 2044553 (1936-06-01), Welch
patent: 3855125 (1974-12-01), Lin
patent: 4464353 (1984-08-01), Hains
patent: 4627970 (1986-12-01), Kruger
patent: 4976936 (1990-12-01), Rathi et al.
Evaluations of Solids Dewatering for a Pilot-Scale Thiosorbic Lime SO.sub.2 Scrubber: J. Chang and T. Brna, AIChE 1987 National Meeting, Houston, Tex. (Apr., 1987).
Calcium Sulfite Hemihydrate: Crystal Growth Rate and Crystal Habit: P. Tseng and G. Rochelle, Environmental Progress, 5 (1) pp. 5-11 (1986).
Effect of Wet Lime FGD Operating Conditions on Improving Particle Size and Dewatering of Sludge: F. Bazek et al.: Tenth Symposium on Flue Gas Desulfurization (Nov. 1986).
Gypsum Crystallizations for Limestone FGD; Chemical Engineering Progress, 82:51 (1986).
Improved Sludge Dewatering in Magnesium Enhanced Lime FGD Systems, Proceedings of the EPA/EPRI First Combined FGD and Dry SO.sub.2 Control Symposium (1988).
Limestone Dissolution in Flue Gas Desulfurization Processes: G. Rochelle et al., EPA Cooperative Agreement R806251 (1983).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Sulfur dioxide removal from gases using a modified lime 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 from gases using a modified lime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sulfur dioxide removal from gases using a modified lime will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-114255

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.