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IMPACT OF AMMONIA UTILIZATION BY NOX FLUE GAS TREATMENT PROCESSES
Citation:
Burnett, T. AND H. Faucett. IMPACT OF AMMONIA UTILIZATION BY NOX FLUE GAS TREATMENT PROCESSES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-79/011 (NTIS PB300596), 1979.
Description:
The report gives results of a study of the impact of ammonia (NH3) utilization by NOx flue gas treatment (FGT) processes. The most technolologically advanced FGT system for the highly efficient (about 90%) removal of NOx from power plang stack gas is selective catalytic reduction (SCR) using NH3. A major economic consideration in the widespread application of SCR is the impact of this demand on the domestic NH3 market. Annual NH3 requirements for NOx FGT control of new, fossil-fuel-fired boilers were calculated and predicted for the period 1978-2000. The total NH3 supply was also projected for the same period and compared with the projected annual demand for NOx FGT. The study concludes that NH3 demand for NOx FGT systems will begin gradually and rise at relatively slow rates, giving the domestic NH3 market adequate time to adjust to the increased demand. Under other than study assumptions (e.g., requiring retrofit of NOx FGT systems on all large boilers), significant impacts and market disruptions are foreseen. The cuttent and projected NH3 production techniques were outlined and the 1978 unit production cost for NH3 was estimared for four potential feedstocks.