Method of separating a mixture of gases by absorption
US5510567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1994 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Feb 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/921
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of separating a mixture of gases by the following stages: PA1 a) absorbing a part G2 of a gas mixture G1 by a solvent L1 in an absorption zone C1; PA1 b) expanding the solvent L1, leading to partial vaporization of the absorbed gases G2 and cooling of the solvent L1; PA1 c) desorbing the gas fraction G2 in a desorption apparatus D1 having a reboiling zone B1 and an internal heat exchange zone Z1, wherein the solvent L1 from stage (b) is circulated in countercurrent contact with the vapor phase, and simultaneously has counter-current heat exchange with the solvent phase from the reboiling zone B1; PA1 d) passing the regenerated solvent leaving the reboiling zone B1 into the heat exchange zone Z1, and transferring the regenerated solvent to the top of said internal heat exchange zone; and PA1 e) recycling the regenerated solvent to the absorption zone C1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.