CN202657969U - Fluorine-absorbing device in enhanced mass transfer process - Google Patents
Fluorine-absorbing device in enhanced mass transfer process Download PDFInfo
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- CN202657969U CN202657969U CN 201220206013 CN201220206013U CN202657969U CN 202657969 U CN202657969 U CN 202657969U CN 201220206013 CN201220206013 CN 201220206013 CN 201220206013 U CN201220206013 U CN 201220206013U CN 202657969 U CN202657969 U CN 202657969U
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- circulation
- tail gas
- pipeline
- fluorine
- absorption tower
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Abstract
The utility model discloses a fluorine-absorbing device in an enhanced mass transfer process. The fluorine-absorbing device in the enhanced mass transfer process is composed of a rotating packed bed absorption tower, a circulation fluid groove, a circulation liquid pump, a tail gas demister and a pipeline connecting with the rotating packed bed absorption tower, the circulation fluid groove, the circulation liquid pump and the tail gas demister. Absorption liquid inlet and absorption liquid outlet of the rotating packed bed absorption tower are respectively connected with the circulation liquid groove and the circulation liquid pump through the pipeline, and the circulation liquid groove is communicated with the circulation pump through a pipeline so as to form circulation. A tail gas outlet at the top of the rotating packed bed absorption tower is connected with the tail gas demister through the pipeline, and the bottom of the tail gas demister is connected with the circulation liquid groove through the pipeline. The fluorine-absorbing device in the enhanced mass transfer process overcomes deflects in the original technology, greatly improves absorption rate of fluorine, can generate high-concentration fluorosilicic acid, simultaneously facilitates maintenance, and is convenient to clear, low in cost and suitable for wet-process phosphoric acid production enterprises.
Description
Technical field
The utility model relates to the absorption of fluorine, specifically, relates to the absorption equipment of fluorine.
Background technology
In the Wet-process Phosphoric Acid Production process, Phosphoric Acid Concentration is that dilute phosphoric acid is boiled off moisture in flashing chamber or evaporator room, contains SiF in the secondary steam that evaporation produces
4And HF, for the needs that reclaim the fluorine resource and the needs of environment protection, must be with the SiF in the process
4Absorb with HF and to get off to make the byproduct silicofluoric acid.Traditional method is to wash this gas in tower with water, makes water, SiF
4Reaction generates silicofluoric acid with HF.But the method fluorine rate of recovery is low, not only causes the wasting of resources, also also has the fluorinated tail gas discharging.
Through retrieval, the Chinese patent application part that relates to the recovery of phosphorous chemical industry fluorine only has ZL94116682.1 number " extruding fluorine absorbing process ", No. 200610125005.2 " the phosphorus fluorine method for absorbing and separating of kiln-process phosphoric acid ", No. 200710052195.4 " the phosphorus fluorine method for absorbing and separating of kiln-process phosphoric acid " and No. 200810069080.0 " method that a kind of fluorine absorbs ".But the mass transfer process of these technical schemes is still traditional method basically, and assimilation effect is undesirable.
Summary of the invention
The purpose of this utility model is to provide a kind of reinforcing mass transfer process to absorb the device of fluorine, to overcome the deficiencies in the prior art, solves better SiF
4Absorption problem with HF.
Reinforcing mass transfer process that the designer provides absorbs the device of fluorine, is comprised of rotary packed bed absorption tower, circulation liquid bath, recycle liquid pump, tail gas scum dredger and the pipeline that connects above each equipment; The absorption liquid import on rotary packed bed absorption tower connects respectively circulation liquid bath and recycle liquid pump with being connected by pipeline, and the circulation liquid bath has again pipeline and recycle liquid pump UNICOM, thereby forms circulation; The tail gas outlet at top, rotary packed bed absorption tower has pipeline to be connected with the tail gas scum dredger, and tail gas scum dredger bottom has pipeline to connect the circulation liquid bath.
There is bed of packings inside, above-mentioned absorption tower, and the rotation of motor drives bed of packings is arranged at the bottom; Secondary steam import and circulation fluid outlet are arranged respectively at the bottom; The circulation fluid import is arranged at top, and the top is the tail gas outlet; Filler is arranged in the bed of packings, the circulation fluid shower nozzle that radially distributes is arranged in the bed of packings.
The top of above-mentioned circulation liquid bath also has the import of process water, is used for replenishing the water of whole device, keeps the balance of water.
Above-mentioned recycle liquid pump has pipeline to draw qualified circulation fluid, removes to produce silicofluoric acid.
In the above-mentioned tail gas scum dredger foam-removing layer is arranged, vapor pipe is arranged at the top.
The device using method that the reinforcing mass transfer process absorbs fluorine is: fluorine-containing secondary steam enters from the bottom, absorption tower, up carries out countercurrent washing with circulating absorption solution from the circulation liquid bath in rotary packed bed through rotary packed bed bottom; Enter the settling section of bottom after the washing, the circulation fluid after the sedimentation enters the circulation liquid bath, by the recycle pump pressurization absorption that circulates, meets the requirements of circulation fluid and sends to the production silicofluoric acid again; Absorption tail gas is gone out from the top and is entered the tail gas scum dredger, enters atmosphere after the foam removal.
The device that reinforcing mass transfer process of the present utility model absorbs fluorine has overcome the defective of original technology, has greatly improved the specific absorption of fluorine, silicofluoric acid that can the production high density, and simultaneously maintenance of equipment and cleaning are convenient, and cost is low; Be applicable to Wet-process Phosphoric Acid Production enterprise.
Description of drawings
Fig. 1 is the device synoptic diagram that the reinforcing mass transfer process absorbs fluorine.1 is the absorption tower among the figure, and 2 are the circulation liquid bath, and 3 is recycle liquid pump, and 4 is the tail gas scum dredger, and 5 is bed of packings, and 6 is shower nozzle, and 7 is electric motor, and 8 is the secondary steam import, and 9 are the tail gas outlet, and 10 is the absorption liquid import, and 11 are the absorption liquid outlet, and 12 is vapor pipe.
Embodiment
Absorb the device of fluorine such as the reinforcing mass transfer process of Fig. 1, its is comprised of absorption tower 1, circulation liquid bath 2, recycle liquid pump 3, tail gas scum dredger 4 and the pipeline that connects above each equipment; The absorption liquid import 10 on absorption tower 1 is connected 11 and connects respectively circulation liquid bath 2 and recycle liquid pump 3 by pipeline with absorption liquid, circulation liquid bath 2 has again pipeline and recycle liquid pump 3 UNICOMs, thereby forms circulation; The tail gas outlet 9 at 1 top, absorption tower has pipeline to be connected with tail gas scum dredger 4, and tail gas scum dredger 4 bottoms have pipeline to connect circulation liquid bath 2, and the top has vapor pipe 12 to put into atmosphere.
There is bed of packings 51 inside, absorption tower, and the bottom has electric motor 7 to drive bed of packings 5 rotations; Secondary steam import 8 and circulation fluid outlet 11 are arranged respectively at the bottom; Circulation fluid import 10 is arranged at top, and the top is tail gas outlet 9; In the bed of packings 5 filler is arranged, there is the circulation fluid shower nozzle 6 that radially distributes at the middle part of bed of packings 5.
The top of circulation liquid bath 2 also has the import of process water.
Recycle liquid pump 3 has qualified circulation fluid introduction pipe.
In the tail gas scum dredger 4 foam-removing layer is arranged, vapor pipe 12 is arranged at the top.
Claims (5)
1. the device of a reinforcing mass transfer process absorption fluorine is characterized in that it is comprised of the pipeline of absorption tower (1), circulation liquid bath (2), recycle liquid pump (3), tail gas scum dredger (4) and above each equipment of connection; The absorption liquid import (10) on absorption tower (1) is connected (11) and connects respectively circulation liquid bath (2) and recycle liquid pump (3) by pipeline with absorption liquid, circulation liquid bath (2) has again pipeline and recycle liquid pump (3) UNICOM, forms circulation; The tail gas outlet (9) at top, absorption tower (1) has pipeline to be connected with tail gas scum dredger (4), and tail gas scum dredger (4) bottom has pipeline to connect circulation liquid bath (2).
2. according to device claimed in claim 1, it is characterized in that there is bed of packings (5) inside, described absorption tower (1), the bottom has electric motor (7) to drive bed of packings (5) rotation; Secondary steam import (8) and circulation fluid outlet (11) are arranged respectively at the bottom; Circulation fluid import (10) is arranged at top, and the top is tail gas outlet (9); Bed of packings has filler in (5), and the circulation fluid shower nozzle (6) that radially distributes is arranged in the bed of packings (5).
3. according to device claimed in claim 1, the top that it is characterized in that described circulation liquid bath (2) also has the import of process water.
4. according to device claimed in claim 1, it is characterized in that described recycle liquid pump (3) has qualified circulation fluid introduction pipe.
5. according to device claimed in claim 1, it is characterized in that in the described tail gas scum dredger (4) foam-removing layer being arranged, vapor pipe (12) is arranged at the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220206013 CN202657969U (en) | 2012-05-09 | 2012-05-09 | Fluorine-absorbing device in enhanced mass transfer process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220206013 CN202657969U (en) | 2012-05-09 | 2012-05-09 | Fluorine-absorbing device in enhanced mass transfer process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202657969U true CN202657969U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220206013 Expired - Lifetime CN202657969U (en) | 2012-05-09 | 2012-05-09 | Fluorine-absorbing device in enhanced mass transfer process |
Country Status (1)
| Country | Link |
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| CN (1) | CN202657969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466631A (en) * | 2013-09-12 | 2013-12-25 | 瓮福（集团）有限责任公司 | Method for reducing degree of supersaturation of hexafluorosilicic acid |
-
2012
- 2012-05-09 CN CN 201220206013 patent/CN202657969U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466631A (en) * | 2013-09-12 | 2013-12-25 | 瓮福（集团）有限责任公司 | Method for reducing degree of supersaturation of hexafluorosilicic acid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
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| CX01 | Expiry of patent term |