Process for the conversion of plastics into olefins
US11459507B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Aug 9, 2019 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Aug 9, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1815
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the conversion of plastics to olefins comprising the following steps: A) gasification of the plastics to synthesis gas by reaction of the plastics with pure oxygen; B) catalytic conversion of the synthesis gas produced in stage A) to methane in at least three successive stages, in each of which hydrogen is added; C) catalytic conversion of the methane produced in stage B) into olefins by the oxidative coupling reaction of methane; and D) separation of the olefins produced in stage C) from other compounds present in the reaction mixture of said stage C).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.