The Experimental Study On Catalytic Purification Of Cooking Oil Fume Over Cu/Ce Catalyst Based On γ-Al₂O₃

The cookings oil fume pollution has been becoming a serious problem, with the appearance of more and more big restaurants in cities of China. According to corresponding researches there are many noxious and harmful components in cooking oil fumes, some of which are carcinogens and may cause mutations. As a result, the exclusion of oil smoke affects the life of urban residents greatly, and the complains of this issue account for 40% of the total on environment discontentment. So the government has enacted relevant laws, forcing the owner of restaurants to purify it in 2000.Through the analysis of the application of catalytic combustion in the exhaust gas purification, in this paper we choose this method to treat the cooking oil fumes. This method make the most of organic pollutants convert to clean gas such as carbon dioxide and water. Compare with the existing fume purification methods, it has obvious advantages.We developed a suitable evaluation system for purification efficiency of catalysts Fist ,compressed air flow going through the cooking oil was used to produce cooking oil fume, and cooking oil fume with the same flow rate and similar composition to the real situation was obtained. Second, the method of absorbing cooking oil fume by the tube filled with CCl4 solvent was developed,which was practical and gained high absorbing efficiency. Third, IR method was used to measure the concentration of the solution.In this paper, different loading of CuO and CeO2 onγ- Al2O3 were prepared for the experiment and characterized by XRD、BET and SEM. The treatment performance impormance improved with the increasing temperature and CuO loading. CeO2 increased the activity of CuO. The catalytic activities of catalyst on cooking oil fumes catalytic combustion were excellent at optimal conditions, the fume was reduced by 93.8%.At last,GC-MS experiment was carried out to detect the composition of cooking oil fumes before and after catalysis purifying experiment, which is the other measure for estimating the catalyst ability.