Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.o.c

Institute of Nuclear Energy Research, Atomic Energy Council

Wun-Syong Chen

Ching-Tsung Yu

Yau-Pin Chyou

Wei-Chin Chen

Huan-Ting Kuo

A sorbent for capturing COis fabricated. The sorbent is pelletized and used under a medium or high temperature. The sorbent is mainly made of aluminum calcium carbonate (Ca&#x2014;Al&#x2014;CO). The present invention has a controllable ratio for mixing Ca&#x2014;Al&#x2014;COwith 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 CO. During 10 loops of use, 43.3&#x2dc;47.5% of COis captured with an initial amount up to 10 milli-moles per gram (mmol/g) and a stability ratio up to 91.2% maintained.

[object Object]

An engineered process of manufacturing a carbon capturing agent calcium aluminum carbonate Ca&#x2014;Al&#x2014;COincludes steps of mixing, solid-liquid separation, drying and extrusion, crushing and conveying, and calcined molding. The acid bath of Caand Alis mixed with the alkaline bath of NaCOand 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&#x2014;Al&#x2014;CO, 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&#x2dc;800&#xb0; C.) COcapture.

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Taoyuan County, Taiwan

Wun-Syong Chen