Identification of CaSO sub 4 formed by reaction of CaO and SO sub 2. Report for October 1988-March 1989

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5317867

Gullett, B K; Bruce, K R

This article discusses the XRD determination of the identity of CaSO{sub 4}, formed by the reaction between CaO and SO{sub 2}, and the support of that determination by density measurements with helium pycnometry. The anhydrous CaSO{sub 4} compound formed has an orthorhombic crystal structure and an analytically calculated density of 2.98 g/cu cm, versus the JCPDS reported value of 2.995 g/cu cm. The product of this reaction, formed during calcium-based sorbent injection for SO{sub 2} removal from coal-fired power plants, has largely been assumed to have a density of 2.61 g/cu cm. Since reaction models must incorporate the product density in determining the rate of sorbent pore blockage or filling, correct identification of the reaction product is crucial.

• Research Organization: Acurex Corp., Research Triangle Park, NC (USA)
• OSTI ID: 5317867
• Report Number(s): PB-89-236392/XAB
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION ABATEMENT
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CALCIUM SULFATES
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COHERENT SCATTERING
DESIGN
DIFFRACTION
EVALUATION
FOSSIL-FUEL POWER PLANTS
LIMESTONE
MATHEMATICAL MODELS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION ABATEMENT
POROSITY
POWER PLANTS
REMOVAL
ROCKS
SCATTERING
SEDIMENTARY ROCKS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
X-RAY DIFFRACTION