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A platform for research: civil engineering, architecture and urbanism
High-activity calcium hydroxide as well as preparation method and application thereof
The invention discloses high-activity calcium hydroxide and a preparation method and application thereof.The preparation method comprises the steps that a certain amount of foaming agent azodicarbonamide and a proper amount of activating agent are added into quick lime, a proper amount of dispersing auxiliaries such as sodium hexametaphosphate and sodium pyrophosphate are mixed, the mixture is mixed with water in a digester after being fully and evenly mixed, the quick lime reacts with water, and calcium hydroxide is generated; meanwhile, a large amount of heat is generated, the materials reach the decomposition temperature of the foaming agent, a large amount of nitrogen released after decomposition forms rich air holes in calcium hydroxide, the dispersing agent can prevent calcium hydroxide particles from being agglomerated, and finally the calcium hydroxide product with the high specific surface area and the high activity is obtained and can be used for the dry-method flue gas desulfurization process.
本发明公开一种高活性氢氧化钙及其制备方法和应用，向生石灰中添加一定量的发泡剂偶氮二甲酰胺，以及适量活化剂，并混入适量的六偏磷酸钠、焦磷酸钠等分散助剂，充分混合均匀后，在消化器中与水混合，生石灰与水反应，生成氢氧化钙，同时产出大量热量，物料达到发泡剂分解温度，其分解后释放的大量氮气在氢氧化钙中形成丰富的气孔，分散剂可防止氢氧化钙颗粒发生团聚，最终得到高比表面、高活性的氢氧化钙产品，可用于干法烟气脱硫过程。
High-activity calcium hydroxide as well as preparation method and application thereof
The invention discloses high-activity calcium hydroxide and a preparation method and application thereof.The preparation method comprises the steps that a certain amount of foaming agent azodicarbonamide and a proper amount of activating agent are added into quick lime, a proper amount of dispersing auxiliaries such as sodium hexametaphosphate and sodium pyrophosphate are mixed, the mixture is mixed with water in a digester after being fully and evenly mixed, the quick lime reacts with water, and calcium hydroxide is generated; meanwhile, a large amount of heat is generated, the materials reach the decomposition temperature of the foaming agent, a large amount of nitrogen released after decomposition forms rich air holes in calcium hydroxide, the dispersing agent can prevent calcium hydroxide particles from being agglomerated, and finally the calcium hydroxide product with the high specific surface area and the high activity is obtained and can be used for the dry-method flue gas desulfurization process.
本发明公开一种高活性氢氧化钙及其制备方法和应用，向生石灰中添加一定量的发泡剂偶氮二甲酰胺，以及适量活化剂，并混入适量的六偏磷酸钠、焦磷酸钠等分散助剂，充分混合均匀后，在消化器中与水混合，生石灰与水反应，生成氢氧化钙，同时产出大量热量，物料达到发泡剂分解温度，其分解后释放的大量氮气在氢氧化钙中形成丰富的气孔，分散剂可防止氢氧化钙颗粒发生团聚，最终得到高比表面、高活性的氢氧化钙产品，可用于干法烟气脱硫过程。
High-activity calcium hydroxide as well as preparation method and application thereof
一种高活性氢氧化钙及其制备方法和应用
YU LEI (author) / YU WEIZHAO (author) / CUI ZE (author) / WANG XIAOYU (author) / WANG ZHENGBO (author) / CHU ANYANG (author)
2024-06-21
Patent
Electronic Resource
Chinese
Nanometer layered porous calcium hydroxide as well as preparation method and application thereof
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