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Title: Regeneration of lime from sulfates for fluidized-bed combustion

Abstract

In a fluidized-bed combustor the evolving sulfur oxides are reacted with CaO to form calcium sulfate which is then decomposed in the presence of carbonaceous material, such as the fly ash recovered from the combustion, at temperatures of about 900.degree. to 1000.degree. C., to regenerate lime. The regenerated lime is then recycled to the fluidized bed combustor to further react with the evolving sulfur oxides. The lime regenerated in this manner is quite effective in removing the sulfur oxides.

Inventors:
 [1];  [2]
  1. (Middle Island, NY)
  2. (Huntington Station, NY)
Issue Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY
OSTI Identifier:
863553
Patent Number(s):
4197285
Assignee:
United States of America as represented by United States (Washington, DC) BNL
DOE Contract Number:  
EY-76-C-02-0016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
regeneration; lime; sulfates; fluidized-bed; combustion; combustor; evolving; sulfur; oxides; reacted; cao; form; calcium; sulfate; decomposed; presence; carbonaceous; material; fly; ash; recovered; temperatures; 900; degree; 1000; regenerate; regenerated; recycled; fluidized; bed; react; manner; effective; removing; fluidized-bed combustion; sulfur oxide; sulfur oxides; bed combustion; fly ash; fluidized bed; carbonaceous material; bed combustor; calcium sulfate; fluidized-bed combustor; form calcium; /423/

Citation Formats

Yang, Ralph T., and Steinberg, Meyer. Regeneration of lime from sulfates for fluidized-bed combustion. United States: N. p., 1980. Web.
Yang, Ralph T., & Steinberg, Meyer. Regeneration of lime from sulfates for fluidized-bed combustion. United States.
Yang, Ralph T., and Steinberg, Meyer. Tue . "Regeneration of lime from sulfates for fluidized-bed combustion". United States. https://www.osti.gov/servlets/purl/863553.
@article{osti_863553,
title = {Regeneration of lime from sulfates for fluidized-bed combustion},
author = {Yang, Ralph T. and Steinberg, Meyer},
abstractNote = {In a fluidized-bed combustor the evolving sulfur oxides are reacted with CaO to form calcium sulfate which is then decomposed in the presence of carbonaceous material, such as the fly ash recovered from the combustion, at temperatures of about 900.degree. to 1000.degree. C., to regenerate lime. The regenerated lime is then recycled to the fluidized bed combustor to further react with the evolving sulfur oxides. The lime regenerated in this manner is quite effective in removing the sulfur oxides.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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