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Main Title Regeneration of calcium-based SO2 sorbents for fluidized-bed combustion : engineering evaluation /
Author Newby, R. A. ; Katta, S. ; Keairns., D. L.
Other Authors
Author Title of a Work
Katta, S.,
Keairns, D. L.,
CORP Author Westinghouse Research and Development Center, Pittsburgh, Pa.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
Publisher Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA-600/7-78-039; EPA-68-02-2132
Stock Number 22161
OCLC Number 04244142
ISBN pbk.
Subjects Fluidized-bed furnaces ; Combustion ; Sulfur dioxide ; Sulphur dioxide
Additional Subjects Fluidized bed processing ; Sulfur dioxide ; Air pollution control ; Absorbers(Materials) ; Electric power plants ; Regeneration(Engineering) ; Combustion products ; Industrial wastes ; Limestone ; Dolomite ; Economics ; Performance evaluation ; Sulfur ; Materials recovery ; Carbon dioxide ; Design criteria ; Process charting ; Scrubbers ; Assessments ; Waste recycling
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-600/7-78-039 Research Triangle Park Library/RTP, NC 11/21/2003
ELBD ARCHIVE EPA 600-7-78-039 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-7-78-039 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-281 317 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xv, 133 p. : ill. ; 28 cm.
The report gives results of an engineering evaluation of regeneration of calcium-based SO2 sorbents (limestone and dolomite) for application in both atmospheric and pressurized fluidized-bed combustion (FBC) processes. Economics of FBC power plants, operated with regeneration, are projected based on current estimates of regeneration process performance. Coal-fueled reductive decomposition is the regeneration process considered for atmospheric FBC; three regeneration schemes (two reductive decomposition processes and a two-step process) are evaluated for pressurized FBC. Estimated costs of FBC power plants with regeneration are compared with costs of FBC plants using once-through sorbent (no regeneration). The economic feasibility of the regenerative system depends on several variables, including in particular the sulfur concentration achievable in the regenerator off-gas, the reduction in fresh sorbent feed rate possible through regeneration, and the cost of fresh sorbent and of solid residue disposal. The performance required for the regenerative FBC system to achieve economic feasibility is projected, and critical development needs are discussed. An integrated regeneration system for both atmospheric and pressurized FBC, capable of achieving the performance necessary, has yet to be demonstrated experimentally.
Prepared for U.S. Environmental Protection Agency, Office of Research and Development, under contract no. 68-02-2132, program element no. EHE623A. Issued Mar. 1978. Includes bibliographical references.