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A platform for research: civil engineering, architecture and urbanism
Method for preparing ammonium bicarbonate from secondary aluminum ash
The invention relates to a method for preparing ammonium bicarbonate from secondary aluminum ash. The method comprises the following steps: grinding the secondary aluminum ash; transferring the ground secondary aluminum ash into a pre-reaction tank, and adding water or evaporated liquor of the last batch into the pre-reaction tank; stirring the materials in the reaction tank, transferring the stirred materials into a first reaction kettle, and adding water or evaporated liquor generated in the previous batch of preparation process into the first reaction kettle; heating the first reaction kettle to carry out a first reaction; after the first reaction is completed, adding sodium carbonate into the first reaction kettle, and carrying out a second reaction; ammonia gas generated in the second reaction process is introduced into a condensation tank for denitrification; in the condensation tank, the ammonia gas is condensed and concentrated to form ammonia water; transferring the ammonia water into a second reaction kettle, and introducing gas with the carbon dioxide concentration of more than 80% into the second reaction kettle to obtain ammonium bicarbonate.
本发明涉及一种利用二次铝灰制备碳酸氢铵的方法。该方法包括：对二次铝灰进行研磨；将研磨后的二次铝灰转移到预反应槽中，并在所述预反应槽中加入水或上一次批次的蒸发液；将所述反应槽中的物料搅拌后，转移到第一反应釜中，并在所述第一反应釜中添加水或上一批次制备过程中产生的蒸发液；加热所述第一反应釜，进行第一反应；在所述第一反应完成后，在所述第一反应釜加入碳酸钠，进行第二反应；将所述第二反应过程中产生的氨气导入到冷凝罐中，以进行脱氮；在所述冷凝罐中，氨气经过冷凝浓缩形成氨水；将所述氨水转移到第二反应釜中，并在所述第二反应釜中通入二氧化碳浓度大于80％的气体，以得到碳酸氢铵。
Method for preparing ammonium bicarbonate from secondary aluminum ash
The invention relates to a method for preparing ammonium bicarbonate from secondary aluminum ash. The method comprises the following steps: grinding the secondary aluminum ash; transferring the ground secondary aluminum ash into a pre-reaction tank, and adding water or evaporated liquor of the last batch into the pre-reaction tank; stirring the materials in the reaction tank, transferring the stirred materials into a first reaction kettle, and adding water or evaporated liquor generated in the previous batch of preparation process into the first reaction kettle; heating the first reaction kettle to carry out a first reaction; after the first reaction is completed, adding sodium carbonate into the first reaction kettle, and carrying out a second reaction; ammonia gas generated in the second reaction process is introduced into a condensation tank for denitrification; in the condensation tank, the ammonia gas is condensed and concentrated to form ammonia water; transferring the ammonia water into a second reaction kettle, and introducing gas with the carbon dioxide concentration of more than 80% into the second reaction kettle to obtain ammonium bicarbonate.
本发明涉及一种利用二次铝灰制备碳酸氢铵的方法。该方法包括：对二次铝灰进行研磨；将研磨后的二次铝灰转移到预反应槽中，并在所述预反应槽中加入水或上一次批次的蒸发液；将所述反应槽中的物料搅拌后，转移到第一反应釜中，并在所述第一反应釜中添加水或上一批次制备过程中产生的蒸发液；加热所述第一反应釜，进行第一反应；在所述第一反应完成后，在所述第一反应釜加入碳酸钠，进行第二反应；将所述第二反应过程中产生的氨气导入到冷凝罐中，以进行脱氮；在所述冷凝罐中，氨气经过冷凝浓缩形成氨水；将所述氨水转移到第二反应釜中，并在所述第二反应釜中通入二氧化碳浓度大于80％的气体，以得到碳酸氢铵。
Method for preparing ammonium bicarbonate from secondary aluminum ash
利用二次铝灰制备碳酸氢铵的方法
YANG HONGLIANG (author) / YANG YANG (author) / WANG TIE (author) / HU XINGMAO (author) / ZHAO JING (author) / TANG LI (author) / ZHANG JUNLI (author) / MA QINGSHAN (author) / GAN JINJUN (author) / LI JIE (author)
2024-08-16
Patent
Electronic Resource
Chinese
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