Process for recovering and treating of aqueous solutions
US6340373B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D9/0036
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is described a method for the treatment and processing of solutions of an organic fluid, water and one or more compounds of alkaline earth metals, alkali metals and metal ions, comprising the following steps: a) conducting a stream (5) consisting of organic fluid, water and one or more compounds of alkaline earth metals, alkali metals and metals ions to a salt reduction and crystallization unit (6), b) evaporating and optionally partially condensing the stream (5) and providing thereby a steam (9, 10) of evaporated water and organic solvent and a steam (8) of organic fluid and the compounds of alkaline earth metals, alkali metals and/or metal ions, c) conducting the steam (8) consisting substantially of organic fluid and the compounds of alkaline earth metals, alkali metals and/or metals ions to a salt reduction means (24), d) nucleating crystals of the compounds of alkaline earth metals, alkali metals and/or metal ions by means of depressurization and temperature increase, e) removing the portion of the precipitated crystals and/or particles from the organic fluid. The method is particularly well suited for processing of solution consisting of mono-, di, tri, or polyethylene…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.