Systems and methods for enhancing the recovery of styrene
US12281071B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2022 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Jul 22, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for enhancing the recovery of styrene includes feeding a hot liquid residue stream to a stripping vessel from a styrene monomer purification finishing system. The hot liquid residue stream includes styrene and compounds less volatile than styrene. The method includes introducing a gas to the stripping vessel to strip a portion of the styrene as vapor, generating a vaporized styrene portion, returning the vaporized styrene portion and the gas to the styrene monomer purification finishing system, recovering at least a portion of the vaporized styrene portion into a styrene monomer product, and producing a final liquid residue stream from a bottom of the stripping vessel with a lower concentration of styrene than the hot liquid residue stream feeding the stripping vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.