Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1982-09-29
1984-01-03
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423555, 252190, B01J 800, C01B 1700
Patent
active
044241976
ABSTRACT:
A process for adsorbing sulfur dioxide from a gas comprising contacting a gas containing SO.sub.2, such as a flue gas, with about stoichiometric amounts of a specially prepared calcium oxide so that substantially all of the sulfur dioxide content is reacted throughout the calcium oxide particle to form a calcium sulfate reaction product. The useful calcium oxide particles comprise a highly voided skeletal structure of very large surface area and large pore volume with numerous macro pores. Such particles are obtained by flash calcining sand-size grains of calcium carbonate, such as aragonite, calcite or dolomite.
REFERENCES:
patent: 3718453 (1955-09-01), Beckman
patent: 3781408 (1973-12-01), Lin
Chemical Abstracts: vol. 85, 112304p, 1976.
Boynton, Chemistry and Technology of Lime and Limestone, 1966, pp. 146-147.
Bakhshi Virendar S.
Powell Byron E.
Randolph Donald A.
Heller Gregory A.
Kurlandsky Samuel
Roberts Kenneth E.
Robinson Robert H.
United States Gypsum Company
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