Experimental and simulation study on synergistic oxidation of acetone and dimethylformamide (DMF)

The rapid development of the electronic industry causes a large number of volatile organic compounds (VOCs) exhaust emissions. Volatile organic compounds not only harm human health, but also cause photochemical pollution and ozone layer destruction. The main components of volatile organic compounds waste gas discharged during the production of copper clad laminate are acetone, dimethylformamide (DMF) and toluene. In this paper, the oxidation reaction process of acetone and dimethylformamide mixed in different proportions in the temperature range of 450–900 °C was studied by jet stirring reactor (JSR). The effects of temperature and mixing ratio on the oxidation characteristics of low and medium temperature lean combustion were analyzed. The results showed that the emission of NO increased significantly at the low temperature of 550–800 °C after the mixture of acetone and DMF. The higher the mixing ratio, the higher the emission of NO. Meanwhile, the synergistic effect of DMF and acetone co-combustion was simulated and verified by Chemkin software combined with the detailed reaction mechanism model of DMF-Aramco established by the author. The simulation results of the model can well predict the initial formation temperature of the product during the mixed oxidation of DMF and acetone, and the prediction of the concentration of N2O, HCN and various carbon-containing oxides is also in good agreement. Experimental and simulation studies show that the synergistic effect of dimethylformamide -acetone oxidation is reflected in the decrease of reaction temperature and the increase of NO concentration. The addition of acetone makes the mixed oxidation system can produce a large number of H and OH free radicals at low temperature, thus reducing the initial temperature of the product.