A Numerical Calculation for the Optimum Operation of Cyclone-based Combustion System

선회류 방식 연소시스템의 최적 조업을 위한 수치해석

  • Received : 2011.01.03
  • Accepted : 2011.02.10
  • Published : 2011.02.28


This research carried out a 3-dimensional simulation using computerized fluid dynamics (CFD) for the flow characteristics, temperature distribution, velocity distribution and residence time, etc. in a reactor in order to derive the optimal combustion conditions of an innovative combustion system. The area-weighted average temperature of the outlet of a furnace during combustion at a condition of fuel input rate 1.5 ton/hr, residence time 1.25 sec and air/fuel ratio 2.1 was $1,077^{\circ}C$, which is a suitable temperature for energy recovery and treatment of air pollutants. Exhaust gas is discharged through a duct at a 40~50 m/s maximum speed along strong vortexes at the center of a combustion chamber, so strong turbulence is created at the center of a combustion chamber to enhance the combustion speed and combustion efficiency. In this system, the optimum operation conditions to prevent incomplete combustion and suppress the formation of thermal NOx were air/fuel ratio 1.9~2.1 and fuel input rate 1.25~1.5 ton/hr.


CFD;Cyclone;Combustion;Temperature distribution;Velocity distribution


  1. 박영옥, 손재익, "폐기물 소각 배가스 제어기술(II)", 한국폐기물학회지, 11(3), pp. 475-487, 1994.
  2. 권영현, 김진욱, 정유진, 김민철, 이재정, 이강우, 손병현, "반건식 반응기와 백필터를 결합한 하이브리드 대기오염제어 시스템의 수치해석적 연구(I)", 한국산학기술학회논문지, 11(11), pp. 4656-4663, 2010.
  3. 현주수, 이시훈, 임영준, 천석현, "저발열량 폐가스 연소를 위한 선회연소 시스템의 운전 특성", 한국폐기물학회지, 29(2), pp. 89-96, 2003.
  4. 채재우 , 박영수 , 김지완 , 탁선재 , 곽용환, "선회식 공간분할 연소시스템에 관한 연구", 한국폐기물자원순환학회(구 한국폐기물학회) 춘계학술연구회발표논문집, pp. 109-112, 2003.
  5. 손병현, 이강우, "산업폐기물 소각플랜트의 작업환경개선", 한국산학기술학회논문지, 7(3), pp. 431-439, 2006.
  6. 정유진, "자연환기 벤틸레이터 최적화 설계에 관한 기초 연구", 창원대학교 공학석사학위논문, 2001.
  7. B. E. Launder and D. B. Spalding, "The numerical computation of turbulent flows", Computer Methods in Applied Mechanics and Engineering, 3(2), pp. 269-289, 1974.
  8. Gang-Woo Lee, Byung-Hyun Shon, Jeong-Gun Yoo, Jong-Hyeon Jung, Kwang-Joong Oh, "The influence of mixing between $NH_{3}$ and NO for a De-NOx reaction in the SNCR process", Journal of Industrial and Engineering Chemistry, 14, pp. 457-467, 2008.
  9. "Thesaurus on Resource Recovery Terminology", ASTM STP 832, ASTM, 1983.