Apparatus and method for refining waste plastic pyrolysis oil using a separator
US11905474B2 · kind B2 · utility
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Key dates
| Filing date | Jul 13, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jul 13, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/4012
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided are an apparatus and a method for refining pyrolysis oil in which a dechlorination reaction is performed under a first hydrotreating catalyst. Hydrogen chloride as a by-product is removed, and then a denitrification reaction is performed under a second hydrotreating catalyst, thereby preventing production of an ammonium salt (NH4Cl), and providing refined oil. It is excellent in prevention of corrosion of a reactor, improvement of durability, occurrence of differential pressure, process efficiency, has very low contents of impurities such as chlorine, nitrogen, and metal and olefin, and has excellent quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.