Method for converting PET, PTT and PBT products into cyclo-hydrocarbons in aviation kerosene range

Abstract

The invention relates to a method for directly converting wasted fibers, thin films and plastic bottles, which are manufactured from polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT) and polybutylene terephthalate (PBT), into cyclo-hydrocarbons in aviation kerosene range. The method can be used for hydrodeoxygenation with a biomass oxygen-containing compound to acquire a fuelwhich contains a chain hydrocarbon, a cyclo-hydrocarbon and an aromatic hydrocarbon, thus solving the defect that a biomass aviation fuel is lack in aromatic hydrocarbons and is poor in volumetric calorific value and sealability. By using the waste wasted fibers, thin films and plastic bottles manufactured from the PET, PTT and PBT, the method is low in cost; the waste wasted fibers, thin films and plastic bottles manufactured from the PET, PTT and PBT, being white garbage, poses a great threat to environment, so that the method not only solves the problem of aviation fuel to certain degree but also solves environmental problems due to the white pollution. The method has potential advantages in future industrial application.

Description

technical field [0001] The invention relates to a method for directly converting PET, PTT, and PBT products into cyclohydrocarbons in the range of aviation kerosene. Concretely include three steps: 1) mix the fiber, film and plastic bottle made of waste PET, PTT, PBT with alcohol and alcoholyze at high temperature to obtain unsaturated ester; 2) process the unsaturated ester generated in step 1 Hydrogenation reaction to obtain saturated ester; 3) hydrodeoxygenation of saturated ester generated in step 2 to obtain C 7-8 aromatics and alkanes. This is the first report on the method of directly converting fibers, films, and plastic bottles made of waste PET, PTT, and PBT into aviation fuel. Compared with traditional aviation fuel, the source of raw materials is cheap and easy to obtain. , Fibers, films, and plastic bottles made of PBT can be used directly without pretreatment. Background technique [0002] Environmental problems such as the dwindling of fossil resources and ...

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Problems solved by technology

3) Sanitary landfill treatment, waste plastic landfill is the treatment method with the least added value, which not only wastes the recycling value of waste plastic, but also occupies a large area of ​​land resources. In addition, sanitary landfill treatment still requires certain safety technologies

4) Heat recovery by incineration. Waste plastic is a fuel with high calorific value. Waste plastic recovery of heat by incineration is a high value-added treatment method, but the problem of secondary pollution must be properly handled

So far, there has been no international report on the use of waste PET resin to synthesize naphthenic hydrocarbons in the range of aviation kerosene

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