A kind of using method of preparing hydrogen fluoride circulating fluidized bed rectification device

A circulating fluidized bed, hydrogen fluoride technology, applied in hydrogen fluoride, fluorine/hydrogen fluoride, chemical instruments and methods, etc., can solve the problems of high gas film mass transfer coefficient, non-corrosion resistance of column internals, short liquid residence time, etc. Achieve the effect of large liquid film mass transfer coefficient, improved thermodynamic efficiency, and small liquid back-mixing

A circulating fluidized bed, hydrogen fluoride technology, applied in hydrogen fluoride, fluorine/hydrogen fluoride, chemical instruments and methods, etc., can solve the problems of high gas film mass transfer coefficient, non-corrosion resistance of column internals, short liquid residence time, etc. Achieve the effect of large liquid film mass transfer coefficient, improved thermodynamic efficiency, and small liquid back-mixing

CN109260742BActive Publication Date: 2021-06-04杨松
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  • A kind of using method of preparing hydrogen fluoride circulating fluidized bed rectification device
  • A kind of using method of preparing hydrogen fluoride circulating fluidized bed rectification device
  • A kind of using method of preparing hydrogen fluoride circulating fluidized bed rectification device

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Embodiment Construction

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Such as figure 1 , figure 2 , image 3 As shown, a method of preparing a fluoride circulating fluidized bed rectification device is characterized by:

[0021] Step 1, must observe the liquid level of the multi-stage cyclone condenser II7 bottom U-type liquid seal 8 before use, ensuring that the liquid level is higher than the return tube 9 at least 300 mm, ensuring that the U-type liquid seal 8 is in a normal operating state. .

[0022] Step 2, the crude hydrofluoric acid solution is supplied from the material liquid conduit 3 designed in the middle of the circulating fluidized bed distillation tower body 2, injecting the liquid disc 10, injection temperature 9 ° C, crude hydrofluoro acid liquid to subjected to liquid disc 10 uniformly distributed The rear drops of the reboiler 4, the reboiler 4 includes a heat transfer tube 5 and a fin plate 6, and the reboiler 4 heat...

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Abstract

The invention relates to the technical field of fluorine chemical industry, in particular to a method for preparing hydrogen fluoride circulating fluidized bed rectification device, which is characterized in that: the crude hydrofluoric acid liquid flows from the feed liquid conduit designed in the middle of the circulating fluidized bed rectification tower Enter and inject into the liquid receiving plate, the crude hydrofluoric acid liquid is evenly distributed in the liquid plate and then drips into the reboiler. The disk enters the multi-stage cyclone condenser, and the liquid droplets carried by the rising steam are separated by the cyclone to form a continuous liquid film on the wall of the multi-stage cyclone condenser. The purity of the hydrogen fluoride liquid condensed by the condenser is continuously improved and drawn out from the bottom.

Description

Technical field [0001] The present invention relates to the field of fluorochemical techniques, and more particularly to the use of the preparation of a fluoride circulating fluidized bed rectification device. Background technique [0002] Hydrogen fluoride has been widely used in electronics, chemical, petroleum and other industries, mainly used as a fluorine salt, fluorine halide, fluorine refrigerant, corrosion glass, impregnated wood, electrolytic element fluorine, etc., its rectification device is produced by water One of the key equipment of hydrogen fluoride. The Chinese invention patent (patent No. CN 2010 20651387.4, the patent name is anhydrous hydrogenide rectification tower) discloses anhydride-free hydrogenide rectification tower, which comprises a tower body, a tower, and an reboiler, the tower. The kettle is provided at the bottom of the tower body and communicates directly with the tower body, and the top and bottom of the reboiler are connected to the tower side ...

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Application Information

Patent Timeline
04 Jun 2021
Publication
CN109260742B
IPC
B01D3/00; B01D3/14; B01D3/32; B01J19/30; B01D5/00; C01B7/19
CPC
B01D3/009; B01D3/14; B01D3/322; B01D5/0036; B01D5/0054; B01D5/0057; B01J19/30; C01B7/19
Inventors
杨松