Development Of Advanced No Subscript X Control Concepts For Coal Fired Utility Boilers Quarterly Technical Progress Report No 5 October 1 December 31 1991
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Development of Advanced NO(subscript X) Control Concepts for Coal-fired Utility Boilers. Quarterly Technical Progress Report No. 5, October 1--December 31, 1991
CombiNO(subscript x) is an integration of three technologies: modified reburning, promoted selective noncatalytic reduction (SNCR) and methanol injection. These technologies are combined to achieve high levels of NO(subscript x), emission reduction from coal fired power plants equipped with SO2 scrubbers. The first two steps, modified reburning and promoted SNCR are linked. It has been shown that, performance of the SNCR agent is dependent upon local oxidation of CO. Reburning is used to generate the optimum amount of CO to promote the SNCR agent, although lower levels of reburning are needed than are traditionally applied in the reburning process. If the reburn fuel is natural gas, the combination of reburning and SNCR may result in a significant cost savings over conventional reburning. The third step, injection of methanol into the flue gas, is used to convert NO to NO2 which may subsequently be removed in a wet scrubber.
Development of Advanced NO(subscript X) Control Concepts for Coal-fired Utility Boilers. Quarterly Technical Progress Report No. 2, January 1--March 31, 1991
Energy and Environmental Research Corporation (EER) is currently conducting a test program to develop an advanced NO(subscript x) control method utilizing reburning, promoted selective noncatalytic agent injection. The study will consist of fundamental and process testing over a large enough range of operating parameters to significantly reduce the risk of a full scale demonstration project. The test plan for the fundamental testing phase of the program is presented here.
Development of Advanced NO(subscript X) Control Concepts for Coal-fired Utility Boilers. Quarterly Technical Progress Report No. 1, September 26--December 31, 1990
Hybrid technologies for reduction of NO(subscript x) emissions from coal fired utility boilers may offer greater levels of NO(subscript x) control than the sum of the individual technologies, leading to more cost effective emissions control strategies. Energy and Environmental Research Corporation had developed a hybrid NO(subscript x) control strategy involving two proprietary concepts which has the potential to meet the US Department of Energy's goal at a significant reduction in cost compared to existing technology. The process has been named CombiNO(subscript x). CombiNO(subscript x) is the integration of three separate NO control technologies: (1) Gas Reburning, (2) CO-Promoted Selective Non-Catalytic Reduction, and (3) Methanol Injection/NO2 Scrubbing.