You are here:
EVALUATION OF NOX EMISSIONS FROM TVA COAL-FIRED POWER PLANTS
Citation:
Jones, J. AND S. Stamey-Hall. EVALUATION OF NOX EMISSIONS FROM TVA COAL-FIRED POWER PLANTS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-92/066.
Description:
The paper gives results of a preliminary evaluation of nitrogen oxide (NOx) emissions from 11 Tennessee Valley authority (TVA) coal-fired power plants. urrent EPA AP-42 emission factors for NOx from coal-fired utility boilers do not account for variations either in these emissions as a function of generating unit load, or in designs of boilers of the same general type, particularly wall-fired boilers. he TVA has compiled short-term NOx emissions data from 30 units at 11 TVA coal-fired plants. hese units include cyclone, cell burner, single wall, opposed wall, single tangential, and twin tangential boiler firing designs. ests were conducted on 29 of the 30 units at high load; 18 were also tested at reduced load. Ox emissions rates were calculated for each test and compared to the calculated rate for each boiler type using AP-42. reliminary analysis indicates that: (1) TVA cyclone-fired units emit more NOx than estimated using AP-42; (2) TVA cell burner units emit considerably more NOx than estimated; (3) most TVA single-wall-fired units emit slightly more NOx than estimated; (4) most TVA single-furnace tangentially fired units emit less NOx than estimated at high load, but the same as (or more than) estimated at reduced load; and (5) most TVA twin-furnace tangentially fired units, at high load, emit slightly more NOx than estimated using AP-42.