聚乙烯类废弃塑料延迟焦化方法制取燃料油的研究

By comparing the thermogravimetric curves (TG/DTG) of waste polyethylene and residual oil, the theoretical feasibility of treating waste polyethylene by delayed coking was demonstrated. With the experiments of simulating delayed coking, the reaction characteristics of the simplex waste polyethylene and the waste polyethyleneresidual oil mixtures were studied. The components of fuel oil from the products with simulated distillation were analyzed. The production feasibility of this technology was discussed. In addition, it proposed the industrial application model to achieve the delay coking disposal. The results show that the temperature zone for PE pyrolysis is 350℃~480℃, and that of residue oil is 250℃~460℃. The pyrolysis characteristic of both samples is very similar. The gasoline and diesel oil fraction in liquid product from PE pyrolysis is 62%. The wax oil accounts for 38%. The gas from PE pyrolysis is mainly hydrocarbon with small molecular amounts and hydrogen. The gasoline fraction increases remarkably from delayed cocoking of PE and residue oil than that from pyrolysis of residue oil solely.