Abstract
Considering that a significant part of used refrigerants have to be destroyed in an environmentally friendly manner together with the high global warming potential (GWP) of HFCs (hydrofluorocarbons), the development of a proper incineration method of HFCs becomes one of the viable methods in the refrigeration and air-conditioning industry. To this end, in this study, the development of a comprehensive modeling of CHF3 (HFC-23 or R-23) incineration is made to assist in the proper design and determination of optimal operating condition of a practical HFCs incinerator, since the refrigerant of CHF3 is one of typical HFCs. For this, numerical investigation was performed by the development of a predictive model for the thermal destruction of the CHF3 using CH4–air flames in an incinerator designed for CDM (clean development mechanism) project. First of all, comparison between calculation and operation data was made to evaluate the program developed in this study. Numerical calculation of CHF3–CH4–air flame predicts successfully the operation data of a CDM incinerator such as temperature, CHF3 destruction rate more than 99.99 % and other species concentrations such as CO and NO at the exit of the incinerator. Further parametric study was performed also in terms of important variables such as excess air, amount of steam and incinerator size. In general, the results obtained appear physically acceptable and give a clear physical insight into the role of the important variables. Further work is strongly recommended for the development of a general turbulent reaction model for the thermal destruction of HFCs, especially for the condition of non-equilibrium turbulent reaction dominance.






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This project was supported by the “R&D Center for reduction of Non-CO2 Greenhouse gases (2013001690006)” funded by the Korea Ministry of Environment (MOE) as the “Global Top Environment R&D Program”.
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Shin, M., Jang, D., Lee, Y. et al. Comprehensive modeling of HFC-23 incineration in a CDM incinerator. J Mater Cycles Waste Manag 19, 754–762 (2017). https://doi.org/10.1007/s10163-016-0476-1
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DOI: https://doi.org/10.1007/s10163-016-0476-1