Record Display for the EPA National Library Catalog

RECORD NUMBER: 4471 OF 4951

OLS Field Name OLS Field Data
Main Title Technical assessment of thermal DeNOx process /
Author Castaldini, Carlo. ; Salvesen, K. G. ; Mason, H. B.
Other Authors
Author Title of a Work
Lachapelle, David G.
Salvesen, K. G.
Mason, H. B.
CORP Author Acurex Corp., Mountain View, CA. Energy and Environmental Div.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Year Published 1979
Report Number EPA/600/7-79/117; EPA-68-02-2611
Stock Number PB-297 947
Additional Subjects Air pollution control ; Nitrogen oxides ; Boilers ; Performance evaluation ; Cost analysis ; Coal ; Flue gases ; Ammonia ; Economic impact ; Operating costs ; Denitrification ; Thermal deNOx process
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-297 947 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 1 volume (various pagings) : illustrations ; 28 cm.
Abstract
The report gives results of a technical/economic assessment of Exxon's Thermal DeNOx Process, applied to coal-fired utility boilers. The assessment was performed in parallel with a study in which the performance/cost of the process was estimated for eight coal-fired utility boilers representative of the Nation's boiler population. The report concludes that the process is a promising technique for controlling NOx emissions from utility steam generators. However, a number of limitations need to be evaluated when the process is retrofitted to coal-fired boilers. Flue gas temperature fluctuations (caused primarily by load following, furnace slag deposition, and tube fouling) may limit NOx reductions to approximately 50%. In addition, operational and environmental impacts of NH3 emissions and ammonium bisulfate formation could further limit the performance of the process and affect its applicability. These limitations are best evaluated on full scale. Total operating costs are estimated between 0.27 and 1.23 mills/kWhr, exclusive of license fee. Actual costs depend primarily on boiler size, initial NOx concentration, and level of control required. The assessment also considered the impact of widespread process implementation on the ammonia market, feedstock supplies, and their costs. The impacts were found to be small.
Notes
Project Officer: David G. Lachapelle. Acurex Corp., Energy and Environmental Division "May 1979." Includes bibliographical references. "EPA-600/7-79-117." Microfiche.