Many experts believe that hydrogenation can be used to treat mixed plastic products. The mixed plastic chips are placed in a hydrogen reactor and subjected to a specific temperature and pressure to produce raw materials such as synthetic crude oil and gas. This treatment can be used to treat polyvinyl chloride waste, which has the advantage of not producing toxic dioxins and chlorine. In this way, mixed plastic articles are processed, and 60%-80> of the components can be refined into synthetic crude oil according to different plastic components. In a joint research report, three chemical companies such as BASF in Germany pointed out that hydrogenation is the best way of pyrolysis, and the synthesized crude oil is good in quality and can be used for refining.
The University of Kentucky in Lexington in the United States invented a process for converting waste plastics into high-quality plastic fuel oil. The fuel produced in this way is much like crude oil, even lighter than crude oil, and easier to refine into high-octane fuel oil. This fuel oil produced from waste plastics contains no sulfur and contains very little impurities. The plastic is liquefied with coal in a similar manner. It can also produce high quality fuel oil.
The researchers mixed various plastics and zeolite catalysts, tetrahydronaphthalene, etc. in a shower, and placed them in a reactor called a "pipe bomb", pressurized with hydrogen and heated to promote macromolecular plastics. Decomposed into smaller molecular weight compounds, this process is similar to the combination in crude oil processing. After the treatment of waste plastics, the oil production rate is very high, and the oil yield of polyethylene plastic bottles can reach 88%. When waste plastics and coal are mixed and liquefied in a ratio of approximately 1:1, a higher quality fuel oil can be obtained. After evaluating the economic benefits of this process, it is expected that the production of fuel oil from waste plastics will become entwined in 5-10 years with blast furnace benefits. At present, Germany has begun to build a reactor for the hope of a daily production of 200t plastic fuel in Botepu.
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