• Title, Summary, Keyword: NH3 slip(암모니아 슬립량)

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Control of SCR System for NOx Reduction in a Refuse Incineration Plant Using Repetitive Control Method (반복제어법을 이용한 소각장 NOx 저감용 SCR 시스템의 제어)

  • 김인규;여태경;김환성;김상봉
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.24 no.11
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    • pp.2762-2770
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    • 2000
  • The refuse incineration plant has an important role in saving the combustion energy for local heating system. But harmful combustion gas(NOx etc.) leads to some serious environmental problem. To reduce the gas, a SCR(Selective Catalytic Reduction)system is installed and it is controlled by adjusting the flow of ammonia gas(NH3) . In this paper, we apply a repetitive control method to reduce NOx by adjusting the flow of ammonia gas for SCR system in a refuse incineration plant which is located in Haeundae, Pusan, Firstly, we analyze the inlet NOx period by FFt method, and verify its periodic variations. Secondly, we design a repetitive control system by using state space model method. Lastly, the effectiveness of repetitive control system is shown by comparing to a conventional PID control in simulation and experimental results.