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Crystallization device of sodium fluoride

A crystallization device and sodium fluoride technology, applied in the direction of alkali metal fluoride, can solve the problems of uncontrollable crystal particle size, low crystallization rate, and long crystallization time, so as to shorten the crystallization time, increase the crystallization rate, and reduce the crystallization speed Effect

Inactive Publication Date: 2013-04-24
山东兴氟新材料有限公司
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  • Abstract
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Problems solved by technology

[0004] The invention provides a sodium fluoride crystallization device to solve the problems of low crystallization rate, long crystallization time and uncontrollable crystal particle size in the prior art

Method used

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  • Crystallization device of sodium fluoride

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Embodiment Construction

[0013] A sodium fluoride crystallization device, mainly composed of a reaction tank 1, a feeding pump 2 and a middle tank 3, the outer surface of the reaction tank 1 is provided with a jacket 4, the inside of the middle tank 3 is provided with a coil 5, the jacket 4 and the coil 5 are all passed into frozen brine.

[0014] When the device of the present invention is in use, sodium carbonate solution and hydrogen fluoride gas are sent to the reaction tank 1 for reaction, and the temperature in the reaction tank 1 can be controlled at 40 to At 43°C, the reaction material is sent to the middle tank 3 through the feeding pump 2, and the coil 5 in the middle tank 3 is fed with a cooling medium to further cool the reaction material, so that sodium fluoride crystals are obtained at the bottom of the middle tank 3. The crystallization device of the present invention can adjust the cooling rate of the sodium fluoride solution by controlling the flow rate of the frozen brine in the jack...

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Abstract

The invention provides a crystallization device of sodium fluoride, and belongs to the technical field of chemical equipment. The crystallization device mainly comprises a traction tank, a feeding pump and a middle tank, wherein the outer surface of the reaction tank is provided with a jacket, a coil pipe is arranged in the middle tank, and cooling media can be piped into both the jacket and the coil pipe. According to the crystallization device, by means of the cooling media in the jacket and the coil pipe, the crystallization temperature and the crystallization speed of the sodium fluoride can be reduced, the crystallization rate of the sodium fluoride is improved, the crystallization time of the sodium fluoride is shortened, the particle sizes of sodium fluoride crystals can be artificially controlled, and quality of the sodium fluoride crystals is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a sodium fluoride crystallization device. Background technique [0002] Sodium fluoride is a colorless bright crystal. It is used as a phosphating accelerator in the coating industry to stabilize the phosphating solution, refine the phosphating, and improve the performance of the phosphating film. In the phosphating of aluminum and its alloys, the trivalent aluminum, which has a very harmful negative catalytic effect, is closed to make the phosphating go smoothly. Wood preservatives, agricultural pesticides, brewing fungicides, pharmaceutical preservatives, welding fluxes, alkali Zinc salt galvanizing additives and enamel, paper industry, etc. [0003] At present, sodium fluoride reacts by passing hydrogen fluoride gas into a container containing sodium carbonate solution, and the generated sodium fluoride undergoes natural cooling and cooling crystallizat...

Claims

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Application Information

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IPC IPC(8): C01D3/02
Inventor 刘根宪李济阳朱东春
Owner 山东兴氟新材料有限公司
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