HIGHLY EFFICIENT DECOMPOSITION OF HFC-134a BY COMBUSTION OXIDIZATION METHOD

In this paper, a low-cost combustion system was developed to effectively destruct HFC-134a. Meanwhile, a series of experiments were carried out in the combustion system. The effects of operation parameters such as excess air ratio, type of flame (Premixed flame and Premixed-diffusive flame) and HFC-134a/LPG on the HFC-134a decomposition efficiency were also investigated. The experimental results indicated that a maximum HFC-134a decomposition efficiency of 99.98% was achieved when excess air ratio was above 0.9 and HFC-134/LPG was below 0.8 in the premixed diffusive flame. Meanwhile, the excess air ratio and HFC-134a/LPG ratio had a significant impact on the HFC-134a destruction efficiency. Moreover, the premixed flame was better than the premixed-diffusive flame for decomposing HFC-134a. Although HFC-134a decomposition efficiency was as high as 98.5%, there were still some byproducts such as C2H2F2, CHF3 and C2H3F in the flue gas, which was proven by gas chromatography mass spectrometry analyzer (GC-MS).