Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for integrally preparing building material by absorbing and mineralizing CO2 in waste gas
The invention discloses a method for integrally preparing a building material by absorbing and mineralizing CO2 in waste gas, which is characterized in that in an absorption tower, the waste gas is used as a CO2 source, and CO2 is captured by an amine absorption method to form a CO2-rich solution, so that the rapid capture of ultralow-concentration CO2 can be realized. In the desorption tower, high-calcium magnesium minerals and solid wastes are used as raw materials, and low-cost and efficient desorption and regeneration of the CO2 absorbent are realized while the high-value negative carbon building material is prepared through compression molding and maintenance in CO2 rich liquor. And the CO2 barren solution in the desorption tower is recycled into the absorption tower for CO2 capture, so that the raw material cost of the absorbent and the pollution of the absorbent to the environment are greatly reduced. According to the method, harmful gases (such as CO, CH4 and the like) can be prevented from entering the carbonization curing chamber, the problem of poor applicability of multi-source waste gas due to different components is effectively solved, and the waste gas types of technical application are greatly expanded; due to the buffering effect of the liquid phase absorbent, the problem that macro and micro performance of a carbonization maintenance product is difficult to regulate and control due to factors such as different CO2 concentrations of waste gas and mismatching of the CO2 flow rate and the mineralization rate is effectively relieved, and stable production of negative carbon building material quality is guaranteed.
本发明公开了提供为一种废气中CO2吸收矿化一体化制备建筑材料的方法，吸收塔中，以废气为CO2源，采用胺法吸收方法进行CO2捕集，形成CO2富液，可实现超低浓度CO2快速捕集。解吸塔中，以高钙镁矿物和固废作为原料，通过压制成型，CO2富液中养护，制备出高值负碳建筑材料的同时，实现CO2吸收剂低成本、高效解吸和再生。解吸塔中CO2贫液循环回收到吸收塔中进行CO2捕集，大大减少了吸收剂原料成本及其对环境的污染。该方法可以阻断有害气体(如CO、CH4等)进入碳化养护室，有效解决了多源废气由于其组成成分各异适用性差的问题，大大拓展了技术应用的废气类型；由于液相吸收剂缓冲作用，有效缓解了废气CO2浓度的不同、CO2流速与矿化速率不匹配等因素导致碳化养护产品宏微观性能调控难的问题，保证了负碳建筑材料质量稳定化生产。
Method for integrally preparing building material by absorbing and mineralizing CO2 in waste gas
The invention discloses a method for integrally preparing a building material by absorbing and mineralizing CO2 in waste gas, which is characterized in that in an absorption tower, the waste gas is used as a CO2 source, and CO2 is captured by an amine absorption method to form a CO2-rich solution, so that the rapid capture of ultralow-concentration CO2 can be realized. In the desorption tower, high-calcium magnesium minerals and solid wastes are used as raw materials, and low-cost and efficient desorption and regeneration of the CO2 absorbent are realized while the high-value negative carbon building material is prepared through compression molding and maintenance in CO2 rich liquor. And the CO2 barren solution in the desorption tower is recycled into the absorption tower for CO2 capture, so that the raw material cost of the absorbent and the pollution of the absorbent to the environment are greatly reduced. According to the method, harmful gases (such as CO, CH4 and the like) can be prevented from entering the carbonization curing chamber, the problem of poor applicability of multi-source waste gas due to different components is effectively solved, and the waste gas types of technical application are greatly expanded; due to the buffering effect of the liquid phase absorbent, the problem that macro and micro performance of a carbonization maintenance product is difficult to regulate and control due to factors such as different CO2 concentrations of waste gas and mismatching of the CO2 flow rate and the mineralization rate is effectively relieved, and stable production of negative carbon building material quality is guaranteed.
本发明公开了提供为一种废气中CO2吸收矿化一体化制备建筑材料的方法，吸收塔中，以废气为CO2源，采用胺法吸收方法进行CO2捕集，形成CO2富液，可实现超低浓度CO2快速捕集。解吸塔中，以高钙镁矿物和固废作为原料，通过压制成型，CO2富液中养护，制备出高值负碳建筑材料的同时，实现CO2吸收剂低成本、高效解吸和再生。解吸塔中CO2贫液循环回收到吸收塔中进行CO2捕集，大大减少了吸收剂原料成本及其对环境的污染。该方法可以阻断有害气体(如CO、CH4等)进入碳化养护室，有效解决了多源废气由于其组成成分各异适用性差的问题，大大拓展了技术应用的废气类型；由于液相吸收剂缓冲作用，有效缓解了废气CO2浓度的不同、CO2流速与矿化速率不匹配等因素导致碳化养护产品宏微观性能调控难的问题，保证了负碳建筑材料质量稳定化生产。
Method for integrally preparing building material by absorbing and mineralizing CO2 in waste gas
一种废气中CO2吸收-矿化一体化制备建筑材料的方法
LI JIAJIE (Autor:in) / ZENG HUI (Autor:in) / WANG NIANXIN (Autor:in) / DONG HONGZHUANG (Autor:in) / LUAN JIYI (Autor:in) / CHEN WANFU (Autor:in) / ZHANG GE (Autor:in) / YUAN YUHAO (Autor:in) / WANG XUE (Autor:in) / NI WEN (Autor:in)
11.06.2024
Patent
Elektronische Ressource
Chinesisch
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