Purification of fluid compounds utilizing a distillation - membrane separation process
US7070694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2003 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Dec 21, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/229
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus and processes are disclosed for economical separation of fluid mixtures. Broadly, apparatus of the invention is an integrated fractional distillation and perm-selective membrane separation apparatus. More particularly, the integrated apparatus comprises a fractional distillation column and one or more membrane device utilizing solid perm-selective membranes. Processes of the invention are particularly useful for simultaneous recovery of a very pure permeate product, a desired non-permeate stream, and one or more distillate products from a fluid mixture containing at least two compounds of different boiling point temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.