The study of thermal pyrolysis mechanisms for chloro organic compounds in electric cable and medical wastes

Abstract

In this paper, experimental modeled results of pyrolysis characteristics and pollution sources for chloric organic compound production are presented. The waste electric cable and medical wastes are investigated by experimental and theoretical analysis, with original chlorine content 11 and 37%, respectively, and heated inside a closed system without oxygen. The study provided extensive pyrolysis parameters such as temperature, heating rate, and initial conditions, calculated gas generation mole ratios, mean molecular weight, weight loss, phase changes, aggregation and degradation of gas products through PVC pyrolysis. The thermochemical characteristics of pyrolysis could be separated into two different steps when the heating temperature was adjusted from 573 to 973 K. The weight loss of hard PVC (cable) and soft PVC (medical treatment wastes, mtw) are 45 and 90%, respectively, and the maximum performances of chloric decontamination at T/ T 0 = 2.5 and 2, respectively, through pyrolysis. The simulation result shows that the exhaust pollutants are reduced as the pyrolysis temperature increases in the pyrolysis cell, which is an important parameter to improve incinerator performance. As the incinerators struggle to deal with harmful chloride and the consumption of chloride is increasing day by day, it is important to develop a pyrolysis process to deal with chloric waste.