Toluene methylation with transalkylation of heavy aromatics
US10975002B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2017 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Dec 10, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of producing a purified mixed xylene comprising: introducing toluene and methanol to an alkylation reactor; reacting the toluene and the methanol in the alkylation reactor to form a hydrocarbon stream comprising a first mixed xylene, wherein the alkylation reactor comprises an alkylation catalyst; separating the hydrocarbon stream into a toluene stream and a separated C8+ stream; introducing the toluene stream to a transalkylation reactor with a transalkylation catalyst to produce a transalkylated stream comprising a second mixed xylene; adding the transalkylated stream to the hydrocarbon stream; and separating a C8 product stream comprising the purified mixed xylene from the separated C8+ stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.