Method for recovering CO2 in the Rectisol process and recovery system
US11596897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2020 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Jan 29, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for recovering CO2 in the Rectisol process. The method includes at least the following steps: performing reduced-pressure flash distillation treatment on the CO2-rich methanol liquid, and outputing the CO2 desorbed gas obtained after the reduced-pressure flash distillation treatment as a product gas; performing heat exchange flash distillation treatment on a first methanol treatment liquid obtained after the reduced-pressure flash distillation treatment, and outputing the CO2 desorbed gas obtained after the heat exchange flash distillation treatment as a product gas; performing vacuum flash distillation treatment on a second methanol treatment liquid obtained after the heat exchange flash distillation treatment, and outputing the CO2 desorbed gas obtained after the vacuum flash distillation treatment as a product gas. Reduced-pressure flash distillation treatment, heat exchange flash distillation treatment and vacuum flash distillation treatment are sequentially performed on the CO2-rich methanol liquid in this method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.