Production method for preparing high-efficiency fluorine removal agent by using waste hydrochloric acid and aluminum-containing sludge and application
A technology of waste hydrochloric acid and fluoride removal agent, which is applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc. and economic value, reducing environmental harm, reducing the effect of waste discharge
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[0024] Example 1
[0025] A method and application for preparing a high-efficiency defluorinating agent using waste hydrochloric acid and aluminum-containing sludge, the steps are as follows:
[0026] (1) Add the absorption water from the tail gas absorption tower of the upper kettle to the reaction kettle, each time about 500 kg, taking 10 tons of product as an example, turn on the tail gas absorption device.
[0027] (2) Add 3000kg of limestone with 40% calcium oxide content into the reaction kettle in batches, mix it with the water in the kettle, add the materials from the feeding port, use a metering pump to adjust the flow rate to 30L / min and pump into the industrial side with a concentration of 30% Produce 5600kg of hydrochloric acid, complete within 3 hours, keep stirring, and add 10kg defoamer to eliminate bubbles, the neutralization reaction temperature rises to about 65℃, and the content of 10% (with Al 2 O 3 ) Aluminum slag 1200kg, react for 1 hour, adjust the pH to about ...
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[0028] Example 2
[0029] A method and application for preparing a high-efficiency defluorinating agent using waste hydrochloric acid and aluminum-containing sludge, the steps are as follows:
[0030] (1) Add the absorption water from the tail gas absorption tower of the upper kettle to the reaction kettle, each time about 500 kg, taking 10 tons of product as an example, turn on the tail gas absorption device.
[0031] (2) Add 2000kg of qualified calcium carbonate into the reaction kettle in batches, mix with the water in the kettle, add the materials from the feeding port, use a metering pump to adjust the flow to 30L / min and pump 5600kg of industrial by-product hydrochloric acid with a concentration of 30% , Complete within 3 hours, keep stirring, and add 10kg defoamer to eliminate bubbles, the neutralization reaction temperature rises to about 65 ℃, while hot, add 10% (with Al 2 O 3 ) Aluminum slag 1200kg, react for 1 hour, adjust the pH to about 5.0 with calcium hydroxide, heat u...
Example Embodiment
[0032] Example 3
[0033] A method and application for preparing a high-efficiency defluorinating agent using waste hydrochloric acid and aluminum-containing sludge, the steps are as follows:
[0034] (1) Add the absorption water from the tail gas absorption tower of the upper kettle to the reaction kettle, each time about 500 kg, taking 10 tons of product as an example, turn on the tail gas absorption device.
[0035] (2) Add 1500kg of qualified calcium hydroxide into the reaction kettle in batches, mix with the water in the kettle, add the materials from the feeding port, use a metering pump to adjust the flow rate to 30L / min and pump into the industrial by-product hydrochloric acid with a concentration of 30% 5600kg, complete within 3 hours, keep stirring, and add 10kg defoamer to eliminate bubbles, the neutralization reaction temperature rises to about 65℃, and the content is 10% (with Al 2 O 3 ) Aluminum slag 1200kg, react for 1 hour, adjust the pH to about 5.0 with calcium hydr...
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