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A circulating fluidized bed degasser for preparing hydrogen fluoride

A technology of circulating fluidized bed and degassing device, applied in the directions of hydrogen fluoride, fluorine/hydrogen fluoride, etc., can solve the problems of gas-film mass transfer coefficient of specific surface area, gas-phase flow pressure drop, short liquid residence time, large gas-phase pressure drop, etc. , to achieve the effect of improving thermodynamic efficiency, large liquid film mass transfer coefficient, and small liquid backmixing

Active Publication Date: 2020-03-24
中科微新材料(深圳)有限公司
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Problems solved by technology

[0003] The technical solutions proposed by prior art 1 and prior art 2 are degassing towers. The current degassing towers are generally plate towers or packed towers using structured packing. Packed towers are selected as degassing process devices, which are suitable for rapid and instantaneous reactions. The process has the advantages of high specific surface area, high gas film mass transfer coefficient, and reduced gas phase flow pressure. The disadvantage is that the liquid storage volume is small and the liquid stays in the packed tower for a short time; the plate tower is selected as the rectification process device, which is suitable for In the fast and medium speed reaction process, it has the advantages of small liquid backmixing, uniform residence time, and large liquid film mass transfer coefficient. The disadvantages are complex structure, large gas phase pressure drop, and low corrosion resistance of tower internals.
In summary, due to the limitation of the liquid storage capacity of the packed tower and the plate tower, the processing capacity is small, the mass transfer efficiency is low, the pressure drop is large, and the operating flexibility is small

Method used

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  • A circulating fluidized bed degasser for preparing hydrogen fluoride
  • A circulating fluidized bed degasser for preparing hydrogen fluoride
  • A circulating fluidized bed degasser for preparing hydrogen fluoride

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0022] Such as figure 1 , figure 2 , image 3 As shown, a circulating fluidized bed degassing device for preparing hydrogen fluoride is characterized in that it includes a multi-stage cyclone separator condenser I1, a circulating fluidized bed degassing tower body 2, a material liquid connection pipe 3, a thermostat 4, a multi-stage cyclone Separating condenser Ⅱ7, U-shaped liquid sealer 8, return material 9, and liquid receiving tray 10.

[0023] The circulating fluidized bed degassing tower body 2 is divided into two upper and lower sections, the upper part is a rectification section, and the lower part is a stripping section. The rectification section is designed with a multi-stage cyclone separation condenser I1 and a multi-stage cyclone separation condenser II7. The stripping section is designed with a thermostat 4, and the crude hydrofluoric acid liquid ...

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Abstract

The invention relates to the technical field of fluorine chemical industry, particularly to a fluoride hydrogen preparation circulating fluidized bed degassing apparatus, wherein a circulating fluidized bed degassing tower body is divided into an upper section and a lower section, the upper section is a rectifying section, the lower section is a stripping section, the rectifying section is provided with a multi-stage cyclone separation condenser, and the stripping section is provided with a thermostat.

Description

Technical field [0001] The invention relates to the technical field of fluorine chemicals, in particular to a circulating fluidized bed degassing device for preparing hydrogen fluoride. Background technique [0002] Hydrogen fluoride has been widely used in electronics, chemical, petroleum and other industries. It is mainly used to prepare fluoride salts, fluorohaloalkanes, fluorine refrigerants, corrosive glass, impregnated wood, electrolytic element fluorine, etc. Its degassing device is to prepare anhydrous One of the key equipment of hydrogen fluoride. The Chinese invention patent (patent number CN 201720751304.0, the patent name is a degassing tower for the production of anhydrous hydrogen fluoride) discloses a degassing tower for the production of anhydrous hydrogen fluoride, which is characterized by comprising a tower body, Both sides of the bottom of the inner cavity of the tower are connected with support rods, the top of the support rod is connected with an inner towe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B7/19
CPCC01B7/195C01B7/196
Inventor 杨松
Owner 中科微新材料(深圳)有限公司
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