Engineered process of manufacturing calcium aluminate carbonates for medium-high temperature CO2 capture
US9108859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2012 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jun 15, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An engineered process of manufacturing a carbon capturing agent calcium aluminum carbonate Ca—Al—CO3 includes steps of mixing, solid-liquid separation, drying and extrusion, crushing and conveying, and calcined molding. The acid bath of Ca+2 and Al+3 is mixed with the alkaline bath of Na2CO3 and NaOH while stirring to form slurry which are then subject to solid-liquid separation to obtain a filtrated cake. The filtrated cake is place into a drying and extrusion device to obtain granular material. The granular material is placed in a conveying and crushing equipment to obtain a powder material. The powder material is calcined at furnace for forming a Ca—Al—CO3, which is nano-layered composite with high porosity. Thereby, the preparation of a solid sorbent can be scale up under systematically controlled with yield of at least batches of kilograms used in medium-high temperature (400˜800° C.) CO2 capture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.