Hollow fiber membrane separation apparatus
US5837033A · kind A · utility
27Cited by
24References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Mar 29, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/23
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention comprises an annular hollow fiber membrane module comprising a plurality of helically wound layers of semi-permeable hollow fibers, wherein the fiber wind angle varies across the axial length of the module in one or more layers. In a preferred embodiment, the module has at least one tubesheet region and an active region, and the wind angle in the tubesheet region of the module differs from the wind angle in the active region of the module. A method of making the module, and a separation module which includes the module described above is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.