Pyrolysis Processing of Polymer Waste Components of Electronic Products

Abstract

The recycling of ABS plastic as a component of electronic and electrical equipment waste by the method of low-temperature pyrolysis is shown and substantiated as well as obtaining alternative sources of energy: pyrolysis liquid, gas mixture, and pyrocarbon. The main components of electronic and electrical equipment waste, which consists of plastic and refractory oxides, along with copper and iron compounds, were analyzed. The composition of precious, toxic, rare, basic metals, and plastic waste is given. It is shown that the waste of electronic and electrical equipment is a valuable secondary raw material and requires separate environmentally friendly processing technologies. The thermal destruction of ABS plastic as a component of waste electronic and electrical equipment at a technological installation of periodic action in the absence of air oxygen and an acid-type catalyst was investigated. Gasoline, naphtha, kerosene, and diesel fractions were obtained by distillation of the pyrolysis liquid, and their qualitative and quantitative composition was studied by gas chromatography. It was established that the vast majority of compounds in different fractions are saturated С8–С16 hydrocarbons of normal and isomeric structure.