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Absorption washing tower for lithium hexafluorophosphate tail gas

A lithium hexafluorophosphate, absorption washing technology, applied in the field of absorption washing towers, can solve the problems of waste of spray liquid, corrosion of conveying pipes and spray heads, environmental pollution, etc., and achieve the effects of avoiding waste, improving utilization efficiency, and reducing the degree of corrosion

Inactive Publication Date: 2022-03-08
厚成科技(南通)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are still many deficiencies in the prior art, such as: 1. The absorption liquid is sprayed from top to bottom and discharged from the spray tower through the waste liquid outlet, resulting in a large waste of spray liquid, and the waste liquid is discharged through the waste liquid outlet for spraying During the tower process, some lithium hexafluorophosphate tail gas will be brought out, which will pollute the environment; 2. In order to better absorb and neutralize the acid gas in the lithium hexafluorophosphate tail gas, alkaline substances will be added to the absorption liquid to make the absorption liquid appear alkaline, but The absorption liquid in alkaline state will corrode the conveying pipe and sprinkler head during the conveying process, and the conveying pipe and sprinkler head need to be replaced regularly

Method used

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  • Absorption washing tower for lithium hexafluorophosphate tail gas
  • Absorption washing tower for lithium hexafluorophosphate tail gas
  • Absorption washing tower for lithium hexafluorophosphate tail gas

Examples

Experimental program
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Effect test

Embodiment 1

[0037]An absorption scrubber for lithium hexafluorophosphate tail gas, comprising a treatment tower 1 connected with an exhaust pipe 3 and an air supply pipe 2 at the upper and lower ends, the lithium hexafluorophosphate tail gas enters the treatment tower 1 through the air supply pipe 2 for treatment, and the treated lithium hexafluorophosphate tail gas passes through The exhaust pipe 3 leaves the treatment tower 1, and the upper and lower ends of the treatment tower 1 are connected through a circulation pipeline 6, and a circulation pump 7 is installed on the circulation pipeline 6, and the circulation pump 7 provides power for the bottom-up flow of the absorption liquid, and the circulation pipeline 6 exits The liquid end is located at the upper part of the treatment tower 1, and the liquid inlet end of the circulation pipe 6 is located at the lower part of the treatment tower 1, the absorption liquid enters the upper part of the treatment tower 1 through the liquid outlet of...

Embodiment 2

[0040] Embodiment 2 On the basis of Embodiment 1, the acidity and alkalinity of the absorption liquid are adjusted, that is: the left inner wall of the treatment tower 1 is provided with an extrusion block slot 101 for slidingly setting the extrusion block 8, and the inner wall of the treatment tower 1 is fixedly connected There is an elastic collar 37, and the extrusion block 8 slides through the elastic collar 37, the elastic collar 37 plays the effect of isolating liquid, preventing the absorption liquid from entering the switch groove 109 through the extrusion block slot 101, and triggering the switch. The work causes adverse effects, the extrusion block 8 slides out of the extrusion block slot 101 and is squeezed with the rotating blade 5, and the end of the extrusion block 8 stretches into the extrusion block slot 101 and the inner wall of the extrusion block slot 101 The extruding block elastic connecting rod 9 is fixedly connected between them, and the extruding block 8...

Embodiment 3

[0048] The third embodiment optimizes the structure of the electromagnet 2 and the magnetic push pedal 18 on the basis of the second embodiment, namely: the electromagnet 2 is fixedly connected with an electromagnet connecting plate 33 near the end of the magnetic push pedal, and the elastic connecting rod 17 of the push pedal Fixedly connected between the electromagnet connecting plate 33 and the magnetic push plate 18, and the threaded rod 19 is fixedly connected with a turntable head that rotates and inserts in the electromagnet connecting plate 33, so as to realize the rotational connection between the threaded rod 19 and the electromagnet connecting plate 33, Magnetic push plate 18 is fixedly connected with some evenly arranged magnetic blocks 181 on the end face near electromagnet 12, and magnetic block 181 and electromagnet 12 magnetic repel, by arranging a plurality of magnetic blocks 181 and electromagnet 2 magnetic cooperation evenly, improve The force intensity and f...

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Abstract

The absorption washing tower comprises a treatment tower with the upper end and the lower end communicated through a circulating pipeline, a circulating pump is installed on the circulating pipeline, and extrusion blocks matched with rotating blades for extrusion extend out of the inner wall of the treatment tower in a sliding mode. A circuit connected with a power source, an electromagnet, an electromagnetic valve and a trigger switch in series through wires is further arranged in the treatment tower, an alkali powder groove and a liquid pushing groove are formed in the inner wall of the treatment tower, a push plate elastic connecting rod is fixedly connected between the electromagnet and a magnetic push plate, and a liquid receiving hopper communicated with the liquid pushing groove is slidably arranged on the outer side of the partition plate; in use, the absorption liquid is recycled through the circulating pipeline and the circulating pump, the utilization efficiency of the absorption liquid is improved, and the absorption liquid is alkaline in the treatment tower and neutral in the circulating pipeline through cooperative arrangement of the electromagnet, the electromagnetic valve and the magnetic push plate; and the corrosion degree of the absorption liquid to the circulating pipeline and the spraying head is reduced.

Description

technical field [0001] The invention relates to the technical field of tail gas treatment equipment, in particular to an absorption scrubber for lithium hexafluorophosphate tail gas. Background technique [0002] Lithium hexafluorophosphate is the most important part of the electrolyte composition, accounting for about 43% of the total cost of the electrolyte. In the fluorine chemical industry, although traditional products saw a significant year-on-year decrease, the growth in demand for high-end products maintained a strong momentum. In the production process of lithium hexafluorophosphate, a large amount of waste gas pollution will be generated. The source of waste gas pollution is mainly from the HCL and HF acid waste gas generated in the synthesis section and the crude lithium hexafluorophosphate drying section, which need to be treated for a period of time before discharge. Existing tail gas absorption and washing towers usually only use absorption liquid to wash the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/40
CPCB01D53/78B01D53/40
Inventor 陈林
Owner 厚成科技(南通)有限公司