Gas transfer process with hollow fiber membrane
US4268279A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1979 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Jun 6, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/262
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process which comprises allowing a liquid to contact with the inside of a microporous hollow fiber and a fluid to contact with the outside, thereby allowing the gaseous components contained in both fluids to transfer between said liquid and said fluid. For use in the process, the inner diameter of the hollow fiber should be 50 to 5,000.mu. and the wall membrane should have an average micropore diameter of 0.01 to 0.5.mu., a porosity of 10 vol.-% or more, a micropore surface area of 5 m.sup.2 /g or more, and an oxygen permeability of 10.sup.-6 cm.sup.3 (STP).multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg or more. In cases where the liquid is water or a liquid substance with aqueous medium, the process can be used effectively in artificial lung units or the like by using a hollow fiber of a polyolefin or a fluorinated polyolefin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.