Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1990-11-06
1992-01-21
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
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).
Benson Lewis B.
Lee Yungli J.
Dravo Lime Company
Heller Gregory A.
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