Method of fabricating pelletized medium-high-temperature CO2 sorbent of Ca—Al—CO3
US9283538B1 · kind B1 · utility
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Key dates
| Filing date | Aug 26, 2014 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Aug 26, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sorbent for capturing CO2 is fabricated. The sorbent is pelletized and used under a medium or high temperature. The sorbent is mainly made of aluminum calcium carbonate (Ca—Al—CO3). The present invention has a controllable ratio for mixing Ca—Al—CO3 with a release agent (magnesium stearate, MgSt) and a binder (activated carbon, cement or bentonite). The sorbent has a good performance for anti-degradation under a high temperature with 100% of CO2. During 10 loops of use, 43.3˜47.5% of CO2 is captured with an initial amount up to 10 milli-moles per gram (mmol/g) and a stability ratio up to 91.2% maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.