Methods and systems for biomass-derived CO2 sequestration in concretes and aggregates
US12246993B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2023 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Feb 24, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided herein are integrated biomass combustion-carbonation gas conditioning systems to directly sequester carbon dioxide from biomass-derived CO2-containing flue gas. The CO2 is sequestered by mineral carbonation in concrete materials within a carbonation reactor. The mineral carbonation processes sequester CO2 in concrete materials, aqueous slurries, or aggregates without any additional carbon enrichment process. Contacting a CO2-containing gas stream from a biomass combustion apparatus with concrete, aggregate, or alkaline solutions, causes a carbonation reaction in which carbonation products such as calcium carbonate (CaCO3) and alumina silica gel are formed. The carbonation reactions set forth herein are useful for strengthening concrete and concrete components. Certain processes herein condition the biomass-derived flue gas. The conditioning includes condensing the gas to remove acidic gas, and to remove particulates and water. The conditioning includes adjusting the temperature, relative humidity, and gas flow rate of the biomass-derived flue gas without any carbon capture step before entering the carbonation reactor. The permanent storage of CO2 in concrete materials redu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.