Environmental Engineering Research

  • 제23권4호
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  • Pages.397-405
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  • 2018
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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Numerical simulation of a regenerative thermal oxidizer for volatile organic compounds treatment

  • Hao, Xiaowen (School of Automotive Engineering, Harbin Institute of Technology) ;
  • Li, Ruixin (School of Automotive Engineering, Harbin Institute of Technology) ;
  • Wang, Jiao (School of Automotive Engineering, Harbin Institute of Technology) ;
  • Yang, Xinfei (Shandong Academy of Environmental Science)
  • 투고 : 2018.01.31
  • 심사 : 2018.04.05
  • 발행 : 2018.12.31
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초록

As regulations governing the control of volatile organic compounds (VOCs) have become increasingly stringent in China, regenerative thermal oxidizers (RTOs) have been more frequently applied in medium- and high-concentration VOCs treatments. However, due to the lack of existing RTO-related research, experience remains a dominant factor for industrial application. This paper thus aimed to establish a model for industrial RTOs, using a transient simulation method and thermal equilibrium model to simulate the internal velocities and temperature distributions of an RTO across multiple cycles. A comparison showed an error of less than 5% between most correlating simulated and experimental measurement points, verifying that the simulation method was accurate. After verification, the velocity and temperature fields inside the RTO were simulated to study the uniformity of temperature and velocity within the packed beds: both fields displayed high uniformity after gas flowed through the honeycomb regenerator. The effects of air volume, VOCs concentrations, and valve switching times on the oxidation chamber temperature, RTO outlet temperature, and thermal efficiency (as well as their averages) were studied. The VOCs removal rate in this study was constantly above 98%, and the average thermal efficiency reached 90%.

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참고문헌

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