Recovery of organic solvents from liquid mixtures
US4508597A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1982 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Apr 5, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/0407
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of recovering light organic solvent from a liquid mixture containing the solvent and a product material, such as asphaltenes or coal liquefaction products. The solvent-product material mixture is treated to separate a first vapor phase rich in solvent and a first liquid phase rich in product material. The first liquid phase is then intimately contacted with steam, under shearing conditions, in a static or dynamic mixer. The steam-liquid phase mixture is then treated to separate a second vapor phase, rich in steam and solvent, and a second liquid phase, rich in product material and substantially depleted of solvent. Solvent is recovered from the first and second vapor phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.