Method for catalytic conversion of waste plastic into liquid fuel
US11319493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Aug 28, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/143
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure provides a method for catalytic conversion of waste plastic into liquid fuel. The method comprises thermally decomposing the waste plastic at a temperature in the range of 350 to 650° C. and under a pressure in the range of 0.0010 psi to 0.030 psi, to obtain a gaseous stream. The gaseous stream is further subjected to four stage sequential cooling to a temperature in the range of −5 to −15° C. to obtain a gas-liquid mixture comprising a gaseous fraction and a liquid fraction. The gas-liquid mixture is fed to the gas-liquid separator to obtain the gaseous fraction comprising C1 to C4 hydrocarbons and the liquid fraction comprising liquid fuel. The method of the present disclosure is simple, economical and energy efficient, which provides a high value liquid fuel with enhanced yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.