Method and device for treating waste plastics and heavy oil

The invention provides a waste plastic and heavy oil treatment method and device. The invention firstly provides a waste plastic and heavy oil treatment method which comprises the following steps: firstly, pretreating waste plastic to remove impurities and grease on the surface of the waste plastic, then inputting the waste plastic and the heavy oil into a mixing unit for mixing, and finally, discharging the waste plastic and the heavy oil. A first slurry obtained by mixing waste plastics and heavy oil is sequentially subjected to first cracking treatment and second cracking treatment. According to the method provided by the invention, co-cracking of the waste plastics and the heavy oil can be realized, continuous processing of the waste plastics is realized, the chlorine content in the cracking oil is reduced, the pressure and load of subsequent refining are reduced, and the limitation of a downstream process on the chlorine content in the cracking product is met. 本发明提供一种废塑料和重油的处理方法和装置。本发明第一方面提供一种废塑料和重油的处理方法