Identification of CaSO sub 4 formed by reaction of CaO and SO sub 2

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · A.I.Ch.E. Journal (American Institute of Chemical Engineers); (USA)

DOI:https://doi.org/10.1002/aic.690351020· OSTI ID:6990969

Gullett, B K ^[1]; Bruce, K R ^[2]

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1. Environmental Protection Agency, Research Triangle Park, NC (USA). Air and Energy Engineering Research Lab.
2. Acurex Corp., Research Triangle Park, NC (USA)

The injection of calcium-based sorbents into coal-fired boilers for reaction with, and reduction in the levels of, sulfur dioxide (SO{sub 2}) in the flue gas has undergone considerable research and development. Significant effort has also been made in developing models for the overall reaction CaO + SO{sub 2} + 1/2 O{sub 2} {leftrightarrow} CaSo{sub 4} in order to better predict the effects of system and sorbent variables upon performance. Development of internal surface area and pore structure is necessary for measurable reaction to occur. Further, since the calcium sulfate (CaSo{sub 4}) product has a larger molar volume than the reactant, calcium oxide (CaO), the extent of pore volume development may control the levels of reaction. The molar volume of CaSO{sub 4} is related to its density. The authors present an analysis to identify the form of the CaSO{sub 4} product and to determine its density.

• OSTI ID: 6990969
• Journal Information: A.I.Ch.E. Journal (American Institute of Chemical Engineers); (USA), Journal Name: A.I.Ch.E. Journal (American Institute of Chemical Engineers); (USA) Vol. 35:10; ISSN AICEA; ISSN 0001-1541
• Country of Publication: United States
• Language: English

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