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Preparation method of high-activity calcium hydroxide
The invention relates to the technical field of flue gas pollution treatment, in particular to a preparation method of high-activity calcium hydroxide. The preparation method comprises the steps of raw material conveying, solvent preparation, digestion drying and solvent recovery. After the high-purity calcium oxide particles are subjected to solvent modification digestion treatment, drying and the like, the prepared calcium hydroxide powder has the effects of high specific surface area, high reaction activity and the like, so that the effect of carrying out acid-base neutralization reaction on the calcium hydroxide powder and acid gas in flue gas is obviously improved. Besides, the digested waste gas can be recycled for the front-end digestion process after the solvent is recycled through spraying condensation, no waste gas or waste water is generated in the whole preparation process, the use amount of the modified solvent is greatly reduced, and the operation cost is saved.
本发明涉及烟气污染处理技术领域，特别是涉及一种高活性氢氧化钙的制备方法。制备方法包括原料输送、溶剂制备、消化干燥、溶剂回收步骤。通过对高纯度氧化钙颗粒进行溶剂改性消化处理、干燥等步骤处理后，使得制备出的氢氧化钙粉体具有高比表面积、高反应活性等效果，从而明显提高氢氧化钙粉体与烟气中酸性气体发生酸碱中和反应的效果。此外，消化后的废气经过喷淋冷凝回收溶剂后可以循环用于前端的消化过程，整个制备过程中无废气和废水产生，且大大降低了改性溶剂的用量，节省了运行成本。
Preparation method of high-activity calcium hydroxide
The invention relates to the technical field of flue gas pollution treatment, in particular to a preparation method of high-activity calcium hydroxide. The preparation method comprises the steps of raw material conveying, solvent preparation, digestion drying and solvent recovery. After the high-purity calcium oxide particles are subjected to solvent modification digestion treatment, drying and the like, the prepared calcium hydroxide powder has the effects of high specific surface area, high reaction activity and the like, so that the effect of carrying out acid-base neutralization reaction on the calcium hydroxide powder and acid gas in flue gas is obviously improved. Besides, the digested waste gas can be recycled for the front-end digestion process after the solvent is recycled through spraying condensation, no waste gas or waste water is generated in the whole preparation process, the use amount of the modified solvent is greatly reduced, and the operation cost is saved.
本发明涉及烟气污染处理技术领域，特别是涉及一种高活性氢氧化钙的制备方法。制备方法包括原料输送、溶剂制备、消化干燥、溶剂回收步骤。通过对高纯度氧化钙颗粒进行溶剂改性消化处理、干燥等步骤处理后，使得制备出的氢氧化钙粉体具有高比表面积、高反应活性等效果，从而明显提高氢氧化钙粉体与烟气中酸性气体发生酸碱中和反应的效果。此外，消化后的废气经过喷淋冷凝回收溶剂后可以循环用于前端的消化过程，整个制备过程中无废气和废水产生，且大大降低了改性溶剂的用量，节省了运行成本。
Preparation method of high-activity calcium hydroxide
一种高活性氢氧化钙的制备方法
CHANG JINGYANG (author) / WAN JUN (author) / LIU MENG (author)
2023-05-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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