10:20 〜 10:40
[3K62201-05-01] 粉砕技術を用いたボトムアッシュによる二酸化炭素の吸収
キーワード：炭酸化、ボトムアッシュ、粒子サイズ、加速度、二酸化炭素
Mineral carbonation technology is a process whereby CO2 is chemically reacted with calcium and/or magnesium-containing minerals to form stable carbonate materials. Mineral carbonation is a potentially attractive sequestration technology for the permanent and safe storage of CO2. Large amounts of calcium/magnesium oxide, calcium/magnesium silicate exist in various types of ashes which can be carbonated as stable material and environmentally harmless products.
In the present study, bottom ash provided from incinerated municipal wastes has been used to study the CO2 capture and sequestration process of the material mechanically ground under various sizes. The main objective is to find out a suitable way and optimum condition for accelerating the carbonation rate using grinding technology. Therefore, the optimization of the mineral carbonation process was attempted by increasing the solid-liquid-gas contact time, testing various particle size fractions of the raw material. Particle size reduction was found to be an important parameter affecting the CO2 sequestration rate.
In the present study, bottom ash provided from incinerated municipal wastes has been used to study the CO2 capture and sequestration process of the material mechanically ground under various sizes. The main objective is to find out a suitable way and optimum condition for accelerating the carbonation rate using grinding technology. Therefore, the optimization of the mineral carbonation process was attempted by increasing the solid-liquid-gas contact time, testing various particle size fractions of the raw material. Particle size reduction was found to be an important parameter affecting the CO2 sequestration rate.
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