Control of NO/sub x/ emission by stack gas treatment. Final report. [45 processes]

TL;DRAbstract

This report is a state-of-the-art review of stack gas treatment methods for the control of NO/sub x/ emissions. More than 45 individual processes for removing NO/sub x/ from stack gas have been identified and are described in the body of the report. Particular emphasis is placed on factors affecting performance and status of development. Appendix A contains a classification of stack gas cleaning technology for NO/sub x/. Appendix B contains detailed data sheets for eight specific NO/sub x/ control processes in a cross section of categories but with the main emphasis centered on the most developed process. Appendix C contains a listing of the issued U.S. patents on NO/sub x/ control technology especially pertinent to utility boilers based on an extensive search of the patent art. Most of the active process development work is taking place in Japan. The patent protection issued in the United States to Japanese companies may dominate this technology in the future. The three leading stack

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