Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Use method of circulating fluidized bed rectification device for preparing hydrogen fluoride

A circulating fluidized bed, hydrogen fluoride technology, applied in hydrogen fluoride, fluorine/hydrogen fluoride, chemical instruments and methods, etc., can solve the problems of non-corrosion resistance of column internals, high gas film mass transfer coefficient, gas flow pressure drop, etc. The effect of improving thermodynamic efficiency, large liquid film mass transfer coefficient, and reducing reversibility

Active Publication Date: 2019-01-25
杨松
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical solutions proposed by prior art 1 and prior art 2 are rectification towers. The current rectification towers are generally plate towers or packed towers using structured packing. Packed towers are selected as rectification process devices, which are suitable for fast 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 the 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Use method of circulating fluidized bed rectification device for preparing hydrogen fluoride
  • Use method of circulating fluidized bed rectification device for preparing hydrogen fluoride
  • Use method of circulating fluidized bed rectification device for preparing hydrogen fluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 , figure 2 , image 3 Shown, a kind of using method of preparing hydrogen fluoride circulating fluidized bed rectification device is characterized in that:

[0021] Step 1. Before use, the liquid level of the U-shaped liquid seal 8 at the bottom of the multi-stage cyclone condenser II7 must be observed through the liquid level gauge to ensure that the liquid level is at least 300mm higher than the return pipe 9 and that the U-shaped liquid seal 8 is in a normal working state. .

[0022] Step 2, the crude hydrofluoric acid liquid enters from the feed liquid conduit 3 designed in the middle of the circulating fluidized bed rectification tower body 2, injects into the liquid receiving pan 10, the injection temperature is 9°C, and the crude hydrofluoric acid liquid is evenly distributed through the liquid pan 10 After d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of fluorine chemical engineering and specifically relates to a use method of a circulating fluidized bed rectification device for preparing hydrogen fluoride. The use method is characterized by comprising the steps that a coarse hydrofluoric acid solution enters from a liquid material guiding pipe which is arranged in the middle of a circulating fluidized bed rectification tower, the coarse hydrofluoric acid solution is injected into a liquid receiving disk, the coarse hydrofluoric acid solution is evenly distributed by the liquid receiving disk anddrops into a reboiler, the coarse hydrofluoric acid solution is gasified to form rising steam when flowing downwards to various stages of fin plates, the coarse hydrofluoric acid solution passes through the liquid receiving disk to enter a multistage cyclone condenser, liquid drops carried by the rising steam can be cyclone separated to form a continuous liquid film on a barrel body wall of the multistage cyclone condenser, in this case, the content of a volatile component hydrogen fluoride in the rising steam is continuously improved, the purity of the hydrogen fluoride liquid condensed by the multistage cyclone condenser is continuously improved, and the hydrogen fluoride liquid is drained out from the bottom.

Description

technical field [0001] The invention relates to the technical field of fluorine chemical industry, in particular to a method for using a circulating fluidized bed rectification device for preparing hydrogen fluoride. Background technique [0002] Hydrogen fluoride has been widely used in electronics, chemical industry, petroleum and other industries. It is mainly used to produce fluorine salts, fluorohaloalkanes, fluorine refrigerants, corrode glass, impregnate wood, and electrolyze elemental fluorine. Its rectification device is used to produce anhydrous One of the key equipment of hydrogen fluoride. Chinese invention patent (patent number CN 201020651387.4, patent name is an anhydrous hydrogen fluoride rectification tower) discloses an anhydrous hydrogen fluoride rectification tower, which is characterized in that it includes a tower body, a tower kettle and a reboiler. The kettle is arranged at the bottom of the tower body and directly communicates with the interior of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00B01D3/14B01D3/32B01J19/30B01D5/00C01B7/19
CPCB01D3/009B01D3/14B01D3/322B01D5/0036B01D5/0054B01D5/0057B01J19/30C01B7/19C01B7/196
Inventor 杨松
Owner 杨松
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products