Multi-leaf membrane module
US4761229A · kind A · utility
Inventors
Key dates
| Filing date | Jun 22, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Jun 22, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D63/069
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Described is a membrane apparatus having particular application in hydrocarbon processes, such as separating ketone dewaxing solvent from a hydrocarbon process stream. The apparatus contains a pressure resistant compartment containing flattened tubular membranes in a parallel stack arrangement separated by retentate spacers. Internally each tube contains permeate spacers for solvent outflow which permeate spacers extend the full length of the tubular membrane. The end of the tubes are not separated by retentate spacers and are clamped together such that solvent exits via the permeate spacers, while the clamping assembly design prevents the cocurrent exit of solution from the high pressure compartment at the solvent inlet location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.