Temperature-vacuum swing adsorption process for capture of CO2
US11148092B2 · kind B2 · utility
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Key dates
| Filing date | Jun 27, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | May 8, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and systems for capture of CO2 from a hydrated gaseous stream are described. Systems can be utilized for direct air capture of CO2 and incorporate a low energy temperature-vacuum swing adsorption (TVSA) process. A TVSA process can include a multi-step CO2 capture bed regeneration process that includes depressurization of the bed, heating of the bed, venting and purging of the bed, and cooling of the bed. Multiple beds can be cycled between CO2 capture and regeneration, during which captured CO2 is recovered. Off-gas from a CO2 capture bed can be used in regenerating a parallel bed for increased efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.