CN207287062U - A kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride - Google Patents
A kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride Download PDFInfo
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- CN207287062U CN207287062U CN201721282760.1U CN201721282760U CN207287062U CN 207287062 U CN207287062 U CN 207287062U CN 201721282760 U CN201721282760 U CN 201721282760U CN 207287062 U CN207287062 U CN 207287062U
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- absorption tower
- coke filter
- cleaning solution
- inlet
- coke
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride, including multistage absorption tower, coke filter and the chimney set gradually, the air inlet connection offgas duct on the absorption tower of front end in multistage absorption tower, gas outlet is connected with the air inlet on next absorption tower, the air inlet of the gas outlet connection coke filter on afterbody absorption tower, the gas outlet connection chamber inlet of coke filter；The device further includes cleaning solution collecting tank, it is connected respectively to the inlet of absorption tower and coke filter by valve and pipeline, and the liquid outlet of absorption tower and coke filter is respectively connected to cleaning solution collecting tank.Apparatus structure provided by the utility model is simple, easy to operate, cost is low, with good economic efficiency and environmental benefit.And by setting cleaning solution accumulator tank, cleaning solution therein can recycle, until it reaches certain concentration is used to prepare anhydrous hydrogen fluoride by its further concentration afterwards.
Description
Technical field
The utility model belongs to technical field of fluorine chemical industry, relates to the use of fluosilicic acid and prepares tail gas during anhydrous hydrogen fluoride
Processing unit.
Background technology
When producing anhydrous hydrogen fluoride using phosphorous chemical industry fluosilicic acid as byproduct, it is dense first will to enter fluosilicic acid after dilute fluosilicic acid dearsenification
Compression system, by concentration, obtains certain density dense fluosilicic acid, and after being separated by filtration, dense fluosilicic acid enters reactor and dense sulphur
Acid mixing, produces the mixed gas such as ocratation, hydrogen fluoride, and after being absorbed with the concentrated sulfuric acid, ocratation is carried out into concentration systems
Absorb.Sulfuric acid after reaction contains a large amount of hydrogen fluoride, separates hydrogen fluoride with sulfuric acid through distilling, by purification, rectifying remove height,
Low boiling impurity, obtains anhydrous hydrogen fluoride product.Sulfuric acid after distillation obtains dilute sulfuric acid, is sent into phosphatase reaction device by stripping
Carry out production phosphoric acid.Tetrafluoride hydrogen and hydrogen fluoride gas are mainly contained in tail gas in production process, it is impossible to directly discharge.Mesh
Before, at this moment vent gas treatment generally use alkali cleaning absorption process, lye mutability in caustic wash tower is absorbed into acid solution and gradually supersaturation
Rate, which declines, to be caused to absorb not exclusively and give off hydrogen fluoride gas, causes environmental pollution.
The content of the invention
A kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride provided by the utility model, structure
Design is reasonable, can effectively handle tail gas, it is ensured that qualified discharge, and fluorine-containing product therein can be recycled.
In order to solve the above technical problems, technical solution is used by the utility model：One kind prepares nothing using fluosilicic acid
Exhaust gas processing device during water hydrogen fluoride, including multistage absorption tower, coke filter and the chimney set gradually, multistage are inhaled
The air inlet connection offgas duct on the absorption tower of front end in tower is received, gas outlet is connected with the air inlet on next absorption tower, last
The air inlet of the gas outlet connection coke filter on level absorption tower, the gas outlet connection chamber inlet of coke filter；The dress
Put and further include cleaning solution collecting tank, it is connected respectively to the inlet of absorption tower and coke filter by valve and pipeline, inhales
The liquid outlet for receiving tower and coke filter is respectively connected to cleaning solution collecting tank.
Further, it is provided with pump between the cleaning solution collecting tank and absorption tower and the inlet of coke filter.
Further, the top on the absorption tower is equipped with packing layer, and the top of packing layer is equipped with filler import, and lower section is equipped with
Filler exports.Packing layer is between absorption tower air inlet and exhaust outlet.
Further, described device is additionally provided with cleaning solution supplement pipeline, itself and absorption tower and the inlet of coke filter
Connected by pipeline and valve.
Further, the inlet of the absorption tower and coke filter is respectively positioned on the top of equipment, and is provided with spray
Device.
Apparatus structure provided by the utility model is simple, easy to operate, cost is low, other will not be introduced in vent gas treatment process
Impurity and pollutant, will not produce exhaust emission etc., with good economic efficiency and environmental benefit.
By setting cleaning solution accumulator tank, cleaning solution therein can recycle, until its reach certain concentration it
Its further concentration is used to prepare anhydrous hydrogen fluoride afterwards.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
The utility model, but the scope of the requires of the utility model protection are further illustrated with reference to embodiment and attached drawing
It is not limited to the scope of embodiment statement.
As shown in Figure 1, the technical solution used is：At a kind of tail gas prepared using fluosilicic acid during anhydrous hydrogen fluoride
Manage device, including multistage absorption tower 1, coke filter 2 and the chimney 3 set gradually, the absorption of front end in multistage absorption tower
The air inlet connection offgas duct of tower, gas outlet are connected with the air inlet on next absorption tower, and the gas outlet on afterbody absorption tower connects
Connect the air inlet of coke filter 2, the gas outlet connection chamber inlet of coke filter 2；The device further includes cleaning solution receipts
Collect groove 4, it is connected respectively to the inlet of absorption tower 1 and coke filter 2, absorption tower 1 and coke mistake by valve and pipeline
The liquid outlet of filter 2 is respectively connected to cleaning solution collecting tank 4.
Further, it is provided with pump between the cleaning solution collecting tank 4 and the inlet of absorption tower 1 and coke filter 2.
Further, the top on the absorption tower 1 is equipped with packing layer, and the top of packing layer is equipped with filler import, and lower section is set
There is filler outlet.Specific filler can be that gama-alumina, alumina etc. are adsorbent, or polypropylene, polyethylene or
Polyvinyl chloride etc., the setting of filler further can absorb HF acid, increase the absorption efficiency of HF acid.
Further, described device is additionally provided with cleaning solution supplement pipeline, itself and absorption tower 1 and the feed liquor of coke filter 2
Mouth passes through pipeline and valve connects.
Further, the inlet of the absorption tower 1 and coke filter 2 is respectively positioned on the top of equipment, and is provided with spray
Shower device.
Cleaning solution in the utility model can directly use process water, using water as absorbing liquid, absorb the fluorination in exhaust gas
Hydrogen and ocratation, generate hydrofluoric acid and silicate fluoride solution, and after it reaches a certain concentration, it is dense to send the progress of fluosilicic acid enriching section back to
Contracting, can recycle fluorine and be used as raw material, can realize zero-emission and increase economic efficiency.
Claims (5)
- A kind of 1. exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride, it is characterised in that：Including setting successively The multistage absorption tower put（1）, coke filter（2）And chimney（3）, the air inlet on the absorption tower of front end connects in multistage absorption tower Offgas duct is connect, gas outlet is connected with the air inlet on next absorption tower, the gas outlet connection coke filter on afterbody absorption tower （2）Air inlet, coke filter（2）Gas outlet connection chamber inlet；The device further includes cleaning solution collecting tank（4）, It is connected respectively to absorption tower by valve and pipeline（1）And coke filter（2）Inlet, absorption tower（1）With coke mistake Filter（2）Liquid outlet be respectively connected to cleaning solution collecting tank（4）.
- 2. device according to claim 1, it is characterised in that：The cleaning solution collecting tank（4）With absorption tower（1）And coke Filter（2）Inlet between be provided with pump.
- 3. device according to claim 1, it is characterised in that：The absorption tower（1）Top be equipped with packing layer, packing layer Top be equipped with filler import, lower section is exported equipped with filler.
- 4. device according to claim 1, it is characterised in that：Described device is additionally provided with cleaning solution supplement pipeline, itself and suction Receive tower（1）And coke filter（2）Inlet pass through pipeline and valve and connect.
- 5. device according to claim 1, it is characterised in that：The absorption tower（1）And coke filter（2）Inlet The top of equipment is respectively positioned on, and spray equipment is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721282760.1U CN207287062U (en) | 2017-09-30 | 2017-09-30 | A kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721282760.1U CN207287062U (en) | 2017-09-30 | 2017-09-30 | A kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207287062U true CN207287062U (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721282760.1U Active CN207287062U (en) | 2017-09-30 | 2017-09-30 | A kind of exhaust gas processing device prepared using fluosilicic acid during anhydrous hydrogen fluoride |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075695A (en) * | 2019-05-30 | 2019-08-02 | 江苏新聚环保科技有限公司 | Emission-control equipment |
| CN113321185A (en) * | 2021-05-20 | 2021-08-31 | 浙江瑞星氟化工业有限公司 | Production process of anhydrous hydrogen fluoride |
-
2017
- 2017-09-30 CN CN201721282760.1U patent/CN207287062U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075695A (en) * | 2019-05-30 | 2019-08-02 | 江苏新聚环保科技有限公司 | Emission-control equipment |
| CN113321185A (en) * | 2021-05-20 | 2021-08-31 | 浙江瑞星氟化工业有限公司 | Production process of anhydrous hydrogen fluoride |
| CN113321185B (en) * | 2021-05-20 | 2023-11-03 | 合肥市贵谦信息科技有限公司 | Anhydrous hydrogen fluoride production process |
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