| 粉煤灰用于碳捕集、利用及封存的研究进展 |
| 摘要点击 2969 全文点击 967 投稿时间：2022-03-11 修订日期：2022-06-01 |
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| 中文关键词 粉煤灰 综合利用 CO2捕集 CO2封存 CO2利用 |
| 英文关键词 fly ash comprehensive utilization CO2 capture CO2 utilization CO2 storage |
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| 中文摘要 |
| 总结了国内外粉煤灰用于CO2捕集、利用和封存的不同技术研究进展，同时对今后的研究和机遇进行了展望.粉煤灰自身可通过直接干式、半干式、湿式和间接方法对CO2进行矿化捕集封存，在CO2矿化的同时降低粉煤灰自身重金属的浸出，并且矿化后的粉煤灰因有效降低游离CaO和MgO的含量而更适合于制作混凝土添加剂.粉煤灰也可制成活性炭、沸石和多孔二氧化硅等产品，并对CO2进行物理吸附捕集，制成产品的类型主要取决于粉煤灰自身的成分组成和理化性质.在CO2利用方面，粉煤灰除了可拓展建材的利用途径外，还可制作CO2多种化学工艺所需催化剂或催化剂载体，以及制作新型材料拟薄水铝石等.我国"双碳"目标的提出及燃煤电厂粉煤灰自身的理化特性为粉煤灰提供了一条新的综合利用途径. |
| 英文摘要 |
| The research progress of different technologies of fly ash for CO2 capture, utilization, and storage at home and abroad was summarized, and the research opportunities were discussed. Fly ash could mineralize, capture, and store CO2 through direct dry, semi dry, wet, and indirect methods, reducing the leaching of heavy metals in fly ash while mineralizing CO2. The mineralized fly ash was more suitable for making concrete additives because it could effectively reduce the content of free CaO and MgO. Fly ash could also be made into activated carbon, zeolite, porous silica, and other products for physical adsorption and capture of CO2. The type of products depended mainly on the composition and physical/chemical properties of fly ash. In terms of CO2 utilization, fly ash could not only expand the utilization of building materials but also be made as catalysts or catalyst carriers required for various chemical processes of CO2 and new materials such as pseudo boehmite. The proposal of "double carbon" in China and the physical/chemical characteristics of fly ash from coal-fired power plants provide a new method for comprehensive utilization of fly ash. |
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