Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to a concrete CO2 mineralization method, which comprises: preparing a premix: mixing fly ash or/and tailing sand to prepare a powdery premix, and carrying out silicic acid activation treatment to obtain the premix with a particle size of 10-100 [mu] m; preparing a CO2 mineralization liquid: preparing a 25% ammonia water solution, and introducing flue gas containing CO2 at room temperature for flue gas decarburization pretreatment to obtain the CO2 mineralization liquid; catalyst preparation: mixing the premix and the CO2 mineralization liquid, and obtaining the catalyst after the CO2 in the ammonia water is fully absorbed and reacted; preparing concrete: using the catalyst as a raw material for preparing the concrete; according to the method disclosed by the invention, the fly ash and the tailing sand are used as raw materials and are subjected to silicic acid activation treatment, so that generated substances can react with CO2 in the flue gas to realize mineralization of CO2, the content of CO2 in the industrial discharged flue gas is reduced, and application of a carbon dioxide trapping and sealing technology is realized.
本发明涉及一种混凝土CO2矿化的方法，包括以下步骤：制备预混料：将粉煤灰或/和尾矿砂进行混合并制备成粉末状态的预混料，经过硅酸活化处理，获得粒度为10‑100μm的预混料；CO2矿化液制备：配置25％的氨水溶液，在室温下通入含有CO2的烟气进行烟气脱碳预处理，并获得CO2矿化液；催化剂制备：将预混料、CO2矿化液进行混合，待氨水中CO2充分吸收反应获得催化剂；制备混凝土：将催化剂作为制备混凝土的原料使用；本发明本方法以粉煤灰、尾矿砂为原料，通过硅酸活化处理后，使其产生的物质可以与烟气中的CO2反应实现CO2的矿化，从而降低了工业排放烟气中的CO2含量，实现了二氧化碳捕集和封存技术的应用。
The invention relates to a concrete CO2 mineralization method, which comprises: preparing a premix: mixing fly ash or/and tailing sand to prepare a powdery premix, and carrying out silicic acid activation treatment to obtain the premix with a particle size of 10-100 [mu] m; preparing a CO2 mineralization liquid: preparing a 25% ammonia water solution, and introducing flue gas containing CO2 at room temperature for flue gas decarburization pretreatment to obtain the CO2 mineralization liquid; catalyst preparation: mixing the premix and the CO2 mineralization liquid, and obtaining the catalyst after the CO2 in the ammonia water is fully absorbed and reacted; preparing concrete: using the catalyst as a raw material for preparing the concrete; according to the method disclosed by the invention, the fly ash and the tailing sand are used as raw materials and are subjected to silicic acid activation treatment, so that generated substances can react with CO2 in the flue gas to realize mineralization of CO2, the content of CO2 in the industrial discharged flue gas is reduced, and application of a carbon dioxide trapping and sealing technology is realized.
本发明涉及一种混凝土CO2矿化的方法，包括以下步骤：制备预混料：将粉煤灰或/和尾矿砂进行混合并制备成粉末状态的预混料，经过硅酸活化处理，获得粒度为10‑100μm的预混料；CO2矿化液制备：配置25％的氨水溶液，在室温下通入含有CO2的烟气进行烟气脱碳预处理，并获得CO2矿化液；催化剂制备：将预混料、CO2矿化液进行混合，待氨水中CO2充分吸收反应获得催化剂；制备混凝土：将催化剂作为制备混凝土的原料使用；本发明本方法以粉煤灰、尾矿砂为原料，通过硅酸活化处理后，使其产生的物质可以与烟气中的CO2反应实现CO2的矿化，从而降低了工业排放烟气中的CO2含量，实现了二氧化碳捕集和封存技术的应用。
Method for mineralizing concrete CO2
一种混凝土CO2矿化的方法
SHI HENGCHANG (Autor:in)
27.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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