CN217163800U - High temperature HF tail gas's processing system - Google Patents
High temperature HF tail gas's processing system Download PDFInfo
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- CN217163800U CN217163800U CN202220270404.2U CN202220270404U CN217163800U CN 217163800 U CN217163800 U CN 217163800U CN 202220270404 U CN202220270404 U CN 202220270404U CN 217163800 U CN217163800 U CN 217163800U
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- tail gas
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- absorption
- absorption tower
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
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- Gas Separation By Absorption (AREA)
Abstract
The utility model provides a processing system of high temperature HF tail gas, including absorption tower, storage tank, tail gas treatment tower and alkali lye pond, let in high temperature HF tail gas in the absorption tower, the bottom intercommunication of absorption tower has the storage tank, the side of absorption tower still communicates there is the tail gas treatment tower, the top of tail gas treatment tower is provided with the gas vent, the tower bottom intercommunication of tail gas treatment tower has the alkali lye pond, alkali lye has been placed in the alkali lye pond, sprays the degree of depth absorption that realizes fluorine ion in the tail gas with alkali lye, discharges after up to standard. The utility model discloses a let in the absorption tower with high temperature HF tail gas, processing system is simple, has realized the precooling to high temperature HF gas, has reduced the damage of high temperature HF gas to the absorption tower, has realized that the circulation absorption liquid carries out the heat transfer through the heat exchanger, further reduces the damage of high temperature gas to the absorption tower in reinforcing HF absorption effect, has realized the recovery to HF gas, and cyclic utilization can be realized to the byproduct of generation.
Description
Technical Field
The utility model belongs to the technical field of the HF tail gas treatment, concretely relates to processing system of high temperature HF tail gas.
Background
Fluorine gas is a very reactive gas that can react with many substances and generate 2H if treated directly with water 2 O+2F 2 ＝4HF+O 2 The violent reaction has potential safety hazard, and fluorine gas can also generate combustion reaction with tail gas treatment plastic equipment and pipelines. Therefore, it is necessary to convert fluorine gas into harmless one in advance. In the process of regenerating the sodium fluoride adsorbent of the industrial purifier, a small amount of fluorine gas and HF cannot be directly discharged along with the removal of replacement purge nitrogen, so that the tail gas containing fluorine, such as fluorine gas, HF and the like, which is treated to remove the tail gas containing fluorine can be discharged after reaching the standard.
In the existing HF high-temperature tail gas treatment, high-temperature gas easily damages an absorption tower, influences the recovery of HF gas and cannot realize the recycling effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that lie in to above-mentioned prior art not enough, provide a processing system of high temperature HF tail gas to solve the problem of proposing in the above-mentioned background art.
In order to solve the technical problem, the utility model discloses a technical scheme is: a high-temperature HF tail gas treatment system comprises an absorption tower, a storage tank, a tail gas treatment tower and an alkali liquor pool, wherein high-temperature HF tail gas is introduced into the absorption tower, and the bottom end of the absorption tower is communicated with the storage tank;
the side of absorption tower still communicates has the tail gas treatment tower, the top of tail gas treatment tower is provided with the gas vent, the tower bottom intercommunication of tail gas treatment tower has the lye pond, alkali lye has been placed in the lye pond, and it sprays the degree of depth absorption that realizes fluorine ion in the tail gas to use lye, discharges after up to standard.
Further, the air inlet pipeline of the absorption tower is arranged at an inclined angle of 30-45 degrees.
Furthermore, the absorption tower is specifically a spray absorber made of polytetrafluoroethylene, and the pipeline is made of steel lining polytetrafluoroethylene.
Further, a circulating absorption liquid is arranged in the absorption tower, and the circulating absorption liquid is specifically pure water, an ammonium fluoride solution or a KOH solution.
Further, the absorption tower is also communicated with a heat exchanger, the circulating absorption liquid in the absorption tower exchanges heat through the heat exchanger, and the temperature of the circulating absorption liquid before entering the absorption tower is controlled to be 10-20 ℃.
Further, the materials used in the alkali liquor pool are lime, Ca (OH) 2 Or KOH.
Compared with the prior art, the utility model has the following advantage:
the utility model introduces the high-temperature HF tail gas into the absorption tower, absorbs HF in the tail gas by using the circulating absorption liquid in the absorption tower, and then flows into the storage tank, and finally obtains a pure byproduct; the circulating absorption liquid in the storage tank exchanges heat through the heat exchanger, tail gas after absorbing HF is introduced into the tail gas treatment tower to be subjected to deep defluorination, gas in the tail gas treatment tower is discharged through a tower top outlet, liquid enters the alkali liquor pool through a tower bottom outlet, deep absorption of fluorine ions in the tail gas is realized through alkali liquor spraying, the tail gas is discharged after reaching the standard, the treatment system is simple, precooling of high-temperature HF gas is realized, the damage of the high-temperature HF gas to the absorption tower is reduced, heat exchange of the circulating absorption liquid through the heat exchanger is realized, the damage of the high-temperature gas to the absorption tower is further reduced while the HF absorption effect is enhanced, the recovery of the HF gas is realized, and the generated by-product can be recycled.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
description of reference numerals:
1-a heat exchanger; 2-an absorption column; 3-a storage tank; 4-a tail gas treatment tower; 5-alkali liquor pool.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a technical solution: a treatment system for high-temperature HF tail gas comprises an absorption tower 2, a storage tank 3, a tail gas treatment tower 4 and an alkali liquor pool 5.
The absorption tower 2 is a spray absorber made of polytetrafluoroethylene, and the pipeline is made of steel lining polytetrafluoroethylene.
The gas inlet pipeline of the absorption tower 2 is set to be at an inclination angle of 30-45 degrees, high-temperature HF tail gas is introduced into the absorption tower 2, circulating absorption liquid is arranged in the absorption tower 2, the absorption tower 2 is also communicated with a heat exchanger 1, the circulating absorption liquid in the absorption tower 2 exchanges heat through the heat exchanger 1, and the temperature of the circulating absorption liquid before entering the absorption tower 2 is controlled to be 10-20 ℃.
The circulating absorption liquid is specifically pure water, an ammonium fluoride solution or a KOH solution, HF in the tail gas is absorbed by the circulating absorption liquid in the absorption tower 2 and then flows into the storage tank 3, and a pure byproduct is finally obtained; the circulating absorption liquid in the storage tank 3 exchanges heat through the heat exchanger 1.
The bottom end of the absorption tower 2 is communicated with a storage tank 3, and when the solution in the storage tank 3 reaches a preset concentration, further prepared by-products are extracted.
The side end of the absorption tower 2 is also communicated with a tail gas treatment tower 4, the top end of the tail gas treatment tower 4 is provided with an exhaust port, tail gas after absorbing HF is introduced into the tail gas treatment tower 4 for deep fluorine removal, and gas in the tail gas treatment tower 4 is discharged through a tower top outlet.
The bottom of the tail gas treatment tower 4 is communicated with an alkali liquor pool 5, alkali liquor is placed in the alkali liquor pool 5, and the materials used in the alkali liquor pool 5 are lime, Ca (OH) 2 Or KOH, the deep absorption of the fluorine ions in the tail gas is realized by alkali liquor spraying, and the tail gas is discharged after reaching the standard.
In conclusion, when the device is used, high-temperature HF tail gas is introduced into the absorption tower 2, HF in the tail gas is absorbed by the circulating absorption liquid in the absorption tower 2 and then flows into the storage tank 3, and a pure byproduct is finally obtained; circulating absorption liquid in the storage tank 3 exchanges heat through the heat exchanger 1, tail gas after absorbing HF is introduced into the tail gas treatment tower 4 to be subjected to deep defluorination, gas in the tail gas treatment tower 4 is discharged through a tower top outlet, liquid enters the alkaline liquid pool 5 through a tower bottom outlet, and the deep absorption of fluorine ions in the tail gas is realized through alkaline liquid spraying, and the tail gas is discharged after reaching the standard.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A processing system of high temperature HF tail gas which characterized in that: the device comprises an absorption tower (2), a storage tank (3), a tail gas treatment tower (4) and an alkali liquor pool (5), wherein high-temperature HF tail gas is introduced into the absorption tower (2), and the bottom end of the absorption tower (2) is communicated with the storage tank (3);
the side of absorption tower (2) still communicates tail gas treatment tower (4), the top of tail gas treatment tower (4) is provided with the gas vent, the bottom intercommunication of tail gas treatment tower (4) has lye pool (5), alkali lye has been placed in lye pool (5), sprays the degree of depth absorption that realizes fluorine ion in the tail gas with alkali lye, discharges after up to standard.
2. A high temperature HF tail gas treatment system according to claim 1 wherein the absorber tower (2) inlet duct is set at an angle of inclination of 30-45 degrees.
3. The high-temperature HF tail gas treating system as set forth in claim 1, wherein the absorption tower (2) is a spray absorber of PTFE material and the pipeline is made of PTFE material.
4. A high temperature HF tail gas treatment system according to claim 1, wherein a circulating absorption liquid is provided in the absorption tower (2), and the circulating absorption liquid is specifically pure water, ammonium fluoride solution or KOH solution.
5. The high-temperature HF tail gas treating system as set forth in claim 1, wherein the absorption tower (2) is also communicated with a heat exchanger (1), the circulating absorption liquid in the absorption tower (2) exchanges heat via the heat exchanger (1), and the temperature of the circulating absorption liquid before entering the absorption tower (2) is controlled at 10-20 ℃.
6. A high temperature HF tail gas treatment system according to claim 1, wherein the materials used in the caustic bath (5) are lime, ca (oh) 2 Or KOH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220270404.2U CN217163800U (en) | 2022-02-10 | 2022-02-10 | High temperature HF tail gas's processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220270404.2U CN217163800U (en) | 2022-02-10 | 2022-02-10 | High temperature HF tail gas's processing system |
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| CN217163800U true CN217163800U (en) | 2022-08-12 |
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| CN202220270404.2U Active CN217163800U (en) | 2022-02-10 | 2022-02-10 | High temperature HF tail gas's processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117695815A (en) * | 2024-02-05 | 2024-03-15 | 长盛(廊坊)科技有限公司 | PAN-based carbon fiber polymerization liquid single-removal tail gas treatment device and control method |
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2022
- 2022-02-10 CN CN202220270404.2U patent/CN217163800U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117695815A (en) * | 2024-02-05 | 2024-03-15 | 长盛(廊坊)科技有限公司 | PAN-based carbon fiber polymerization liquid single-removal tail gas treatment device and control method |
| CN117695815B (en) * | 2024-02-05 | 2024-04-16 | 长盛(廊坊)科技有限公司 | PAN-based carbon fiber polymerization liquid single-removal tail gas treatment device and control method |
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