Process for stable blend of waste plastic with petroleum feed for feeding to oil refinery units and process of preparing same
US12404458B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Nov 17, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/4006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns, and less than 10 ppm chloride. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. The blend mixture is then hot filtered with the resulting filtered blend mixture being heated to at least 500° F. The heated mixture can then be treated with a chloride removal guard bed. The resulting blend can then be cooled and stored or sent directly to a refinery conversion unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.