Cold membrane nitrogen rejection process and system
US11318411B2 · kind B2 · utility
0Cited by
8References
16Claims
0Family size
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Key dates
| Filing date | Dec 3, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | May 27, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2317/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An approach for separating a gaseous mixture includes a multi-stage membrane system in which a rubbery membrane is operated at a low temperature. Various streams are cooled and heated in a multi-fluid heat exchanger. In specific configurations, the multi-fluid heat exchanger is cooled by using no fluids other than fluids derived from the permeate and/or residue generated in the first membrane stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.