||Boiler design criteria for dry sorbent SO2 control with low-NOx burners /
Clark, J. P. ;
Kwasnik, A. F.
||Combustion Engineering, Inc., Windsor, CT.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
|| U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
Boilers--Design and construction. ;
Acid rain--United States. ;
Nitrogen oxides. ;
Sulfur dioxide. ;
Air pollution control equipment ;
Sulfur dioxide ;
Air pollution control ;
Nitrogen oxides ;
Dry methods ;
Combustion products ;
Economic analysis ;
Low nitrogen oxides burners ;
Coal fired power plants
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||42 pages ; 28 cm
The report describes a study to define boiler modifications required to achieve 70% SO2 removal with sorbent injection on a large tangentially fired utility boiler without supplemental spray drying. The study is a follow on to a recently completed broader evaluation of boiler design criteria for sorbent SO2 control technology. A new 500 MWe utility boiler burning low-sulfur coal was considered to be modified to increase sorbent residence time and decrease gas quench rate to achieve 70% SO2 removal in the boiler with atmospheric calcium hydrate prepared on-site. A second case was considered where no change was made to gas quench rate or sorbent residence time. The effects of adding a pulverizer to the sorbent preparation/injection system to produce a finer sorbent were determined. Capital costs, cost of electricity, and cost effectiveness per ton of SO2 removed were developed and compared with the results of the earlier study.
Caption title. "December 1986." "EPA/600/7-86/023." Microfiche.