A Study on Dechlorination of PVC Catalytic Combustion in Air and O2/CO2 Atmosphere Using TG-FTIR

HCl is a dangerous gas product of garbage power plant, which is able to cause corrosion on the heated surface. PVC is the main source of HCl in garbage power plant. The combustion characteristics and dechlorination of polyvinyl chloride (PVC) play an important role in guiding the anti-corrosion work of garbage power plant. In this paper, TG-FTIR was used to make qualitative and quantitative analysis of chlorine release characteristics in the combustion of polyvinyl chloride (PVC). The thermogravimetry of PVC with different mass was systematically studied. The HCl removal efficiency of different mass ratios of CaCO3, CaO, Ca(OH)(2) and kaolin under air atmosphere and O-2/CO2 atmosphere was studied. When the mass of PVC was more than 10mg, the weightlessness trend changed. The HCl removal efficiency increased with the proportion of absorbent, and the removal efficiency of Ca(OH)(2) was the best. Oxygen had a great influence on the HCl removal efficiency of absorbent. The higher the proportion of oxygen, the higher the dechlorination efficiency.