CN216259566U - Emergency acid return device for acid washing - Google Patents
Emergency acid return device for acid washing Download PDFInfo
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- CN216259566U CN216259566U CN202123013321.XU CN202123013321U CN216259566U CN 216259566 U CN216259566 U CN 216259566U CN 202123013321 U CN202123013321 U CN 202123013321U CN 216259566 U CN216259566 U CN 216259566U
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Abstract
The utility model discloses an emergency acid return device for acid washing, which comprises a total acid tank, a main acid pipe, a ceramic filter and an acid inlet structure for inputting acid liquor into the ceramic filter, wherein the total acid tank is connected with a middle barrel through an acid supply pipe; an acid outlet pipe is fixedly connected to the middle barrel, is connected with the main acid pipe and is provided with an acid outlet valve for controlling the on-off of the acid liquor; the acid inlet structure comprises an acid inlet pipe connected to the main acid pipe, an acid mixing barrel communicated with the acid inlet pipe and an acid washing pipe connected between the ceramic filter and the acid mixing barrel, wherein an acid inlet valve used for controlling the on-off of acid liquor is installed on the acid inlet pipe, and a metering pump is installed on the acid washing pipe; and the main acid pipe is provided with a main valve close to the tail end of the main acid tank.
Description
Technical Field
The utility model belongs to the technical field of pickling equipment, and particularly relates to an emergency acid return device for pickling.
Background
In large-scale slag separation plants, ceramic filters are often used, which consist of a rotor, a stirrer, a slurry tank, a ceramic filter plate, a cleaning device, a scraper component and other main components. After the ceramic filter operates for several hours, the small holes of the ceramic plate which has finished a plurality of filtering operations are easily blocked by the fine ore pulp particles, and the next filtering operation stage can be started only by adopting chemical medium cleaning. The chemical medium refers to 98% concentrated nitric acid, and the concentrated nitric acid is injected into a ceramic filter for acid washing. The treatment capacity of large slag from a factory to the past day is large, so that the consumption of acid pickling nitric acid is also large, and the corrosion to equipment parts and the failure frequency of the equipment are high.
The existing ceramic filter acid washing system is often lack of a nitric acid emergency backflow device, once parts of acid washing equipment are damaged, nitric acid is directly exposed or leaked in air, and the risk of corrosion to human bodies and environmental pollution exists; meanwhile, nitric acid which cannot flow back in the system can also cause corrosion risk to operators and maintenance workers, and the operators treat nitric acid leakage sites and waste manpower and time.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides the emergency acid recovery device for acid washing, which can perform emergency reflux on nitric acid, ensure the operation and maintenance safety of equipment and reduce the risk of environmental pollution.
In order to achieve the purpose, the utility model adopts the following technical scheme: an emergency acid return device for acid washing comprises a total acid tank, a main acid pipe, a ceramic filter and an acid inlet structure for inputting acid liquor into the ceramic filter, wherein the total acid tank is connected with a middle barrel through an acid supply pipe; an acid outlet pipe is fixedly connected to the middle barrel, is connected with the main acid pipe and is provided with an acid outlet valve for controlling the on-off of the acid liquor; the acid inlet structure comprises an acid inlet pipe connected to the main acid pipe, an acid mixing barrel communicated with the acid inlet pipe and an acid washing pipe connected between the ceramic filter and the acid mixing barrel, wherein an acid inlet valve used for controlling the on-off of acid liquor is installed on the acid inlet pipe, and a metering pump is installed on the acid washing pipe; and the main acid pipe is provided with a main valve close to the tail end of the main acid tank.
Preferably, an acid outlet standby pipeline is connected to a pipe section of the acid outlet pipe between the acid outlet valve and the intermediate barrel, and the acid outlet standby pipeline is provided with an acid outlet standby valve.
Preferably, the spare acid outlet valve is a fluorine-lined valve.
Preferably, the pipe section of the acid inlet pipe between the acid inlet valve and the acid preparation barrel is connected with an acid inlet standby pipeline, and the acid inlet standby pipeline is provided with an acid inlet standby valve.
Preferably, the acid inlet spare valve is a fluorine lining valve.
Preferably, the ceramic filter is provided with a plurality of ceramic filters, and the acid inlet structures are at least provided with one group corresponding to the number of the ceramic filters.
Preferably, the main acid pipe comprises an acid inlet section connected with the acid inlet pipe and the acid outlet pipe and a reflux extension section detachably connected with the acid inlet section.
Preferably, the acid inlet valve and the acid outlet valve are fluorine-lined valves.
The utility model has the technical effects that:
1. through the arrangement and combination of a plurality of valves and corresponding pipelines in the device, when equipment breaks down, the opening and closing conditions of the valves are correspondingly adjusted, the concentrated nitric acid in the acid preparation barrel or the middle barrel is controlled to flow back and collected into the total acid tank, external power is not required to be added, and the nitric acid can be automatically controlled to flow back, so that the safety and convenience of equipment fault maintenance are effectively ensured, and environmental pollution and personal injury are avoided; meanwhile, the waste of nitric acid is reduced, and manpower and material resources for treating nitric acid leakage sites are saved.
2. Through the setting of entering sour spare valve and going out sour spare valve, the emergence of the condition is revealed in the nitric acid large tracts of land that probably causes when the spare valve can effective handling because of key valve damages, and the loss of manpower and materials reduces when further guaranteeing trouble or occurence of failure, avoids a large amount of leakages of nitric acid extravagant.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The reference numerals of the main technical features in the figure are as follows: 1. a total acid tank; 2. a main acid pipe; 21. an acid inlet section; 22. a reflux lengthening section; 23. a main valve; 3. a ceramic filter; 4. a middle barrel; 5. an acid feeding pipe; 51. an acid feeding pump; 6. an acid outlet pipe; 61. an acid outlet valve; 62. an acid outlet standby pipeline; 63. an acid outlet standby valve; 7. an acid inlet pipe; 71. an acid inlet valve; 72. an acid inlet standby pipeline; 73. an acid inlet standby valve; 8. preparing an acid barrel; 9. pickling the tube; 91. a metering pump.
Detailed Description
The utility model will be further illustrated by the following description and the accompanying drawings.
As shown in the figure, the emergency acid return device for acid washing comprises a total acid tank 1, a main acid pipe 2, a ceramic filter 3 and an acid inlet structure, wherein the total acid tank 1 is connected with a middle barrel 4 through an acid supply pipe 5, and the acid supply pipe 5 is provided with an acid supply pump 51; an acid outlet pipe 6 is fixedly connected to the intermediate barrel 4, and an acid outlet valve 61 is arranged on the acid outlet pipe 6 and used for controlling the on-off of the acid liquor; and the ceramic filter 3 introduces the acid liquor in the total acid tank 1 through the acid inlet structure for acid washing.
Specifically, the main acid pipe 2 includes into sour section 21 and backward flow extension section 22, the one end that goes out sour pipe 6 connect in advance on the sour section 21, advance sour section 21 and backward flow extension section 22 and can dismantle the connection, backward flow extension section 22 connect in total acid tank 1 is last and its end that is close to total acid tank 1 installs main valve 23.
Further, the acid inlet structure comprises an acid inlet pipe 7, an acid preparation barrel 8 and an acid washing pipe 9, wherein one end of the acid inlet pipe 7 is connected to the acid inlet section 21, the other end of the acid inlet pipe is connected to the acid preparation barrel 8, and an acid inlet valve 71 is mounted on the acid inlet pipe; one end of the pickling pipe 9 is connected to the acid preparation barrel 8, the other end of the pickling pipe is connected to the ceramic filter 3, and the metering pump 91 is installed on the pickling pipe 9 and used for driving acid liquor to quantitatively enter the ceramic filter 3.
Furthermore, the number of the ceramic filters 3 is two, and the acid inlet structures are provided with two groups according to the number of the ceramic filters 3.
Further, an acid outlet standby pipeline 62 is connected to a pipe section of the acid outlet pipe 6 between the acid outlet valve 61 and the intermediate barrel 4, and an acid outlet standby valve 63 is installed on the acid outlet standby pipeline 62.
Further, an acid inlet standby pipeline 72 is connected to a pipe section of the acid inlet pipe 7 between the acid inlet valve 71 and the acid preparing barrel 8, and an acid inlet standby valve 73 is installed on the acid inlet standby pipeline 72.
Further, the height of the middle cylinder is higher than that of the acid preparation barrel 8, and the height of the acid preparation barrel 8 is higher than that of the total acid tank 1, so that the self-flow of the nitric acid is realized by utilizing the height difference of field equipment without external power supply.
Further, the acid inlet valve 71, the acid outlet valve 61, the acid inlet standby valve 73 and the acid outlet standby valve 63 are all fluorine-lined valves.
The specific implementation process of the utility model is as follows: under the normal operation condition of the production and pickling operation procedures, the acid inlet pipe 7 and the acid outlet pipe 6 are in an open state, and the acid inlet standby valve 73, the acid outlet standby valve 63 and the main valve 23 are in a closed state: the ceramic filter 3A is started to perform acid cleaning operation, and the ceramic filter 3A is started to perform dehydration filtering operation.
During the dehydration filtration operation, when an operator finds that the metering pump 91 of one acid preparation barrel 8 of the acid inlet structure is corroded and damaged, the washing procedure is immediately stopped, the acid outlet valve 61 and the acid inlet valve 71 of the other acid inlet structure are closed, the acid inlet valve 71 of the fault acid inlet structure is kept in an open state at the moment, the main valve 23 is opened, and the nitric acid in the acid preparation barrel 8 of the fault acid inlet structure automatically flows back to the total acid tank 1.
When the two ceramic filters 3 finish the dehydration filtering operation and start the acid cleaning operation, an operator finds that the metering pumps 91 of the two acid mixing barrels 8 are damaged at the same time, immediately stops the acid cleaning operation of the two ceramic filters 3, closes the acid outlet valve 61, continues to keep the two acid inlet valves 71 in the open state at the moment, opens the main valve 23, and automatically reflows the nitric acid in the two acid mixing barrels 8 to the total acid tank 1.
When one ceramic filter 3 is started for filtering and dehydrating operation and one ceramic filter 3 is started for pickling, an operator finds that the acid outlet valve 61 of the middle barrel 4 is corroded to leak acid, immediately stops the pickling process of the ceramic filter 3 in the pickling operation, closes the two acid inlet valves 71, opens the standby valve of the acid outlet pipe 6, opens the main valve 23, and automatically reflows the nitric acid in the middle barrel 4 to the total acid tank 1.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and the present invention can be applied to similar products, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (8)
1. An emergent acid recovery device that pickling was used which characterized in that: the acid feeding device comprises a total acid tank (1), a main acid pipe (2), a ceramic filter (3) and an acid feeding structure for inputting acid liquor into the ceramic filter (3), wherein the total acid tank (1) is connected with a middle barrel (4) through an acid feeding pipe (5), the acid feeding pipe (5) is provided with an acid feeding pump (51), and one end of the main acid pipe (2) is connected to the total acid tank (1); an acid outlet pipe (6) is fixedly connected to the middle barrel (4), the acid outlet pipe (6) is connected with the main acid pipe (2), and an acid outlet valve (61) for controlling the on-off of acid liquor is mounted on the acid outlet pipe; the acid inlet structure comprises an acid inlet pipe (7) connected to the main acid pipe (2), an acid mixing barrel (8) communicated with the acid inlet pipe (7) and an acid washing pipe (9) connected between the ceramic filter (3) and the acid mixing barrel (8), wherein an acid inlet valve (71) used for controlling the on-off of acid liquor is installed on the acid inlet pipe (7), and a metering pump (91) is installed on the acid washing pipe (9); and a main valve (23) is arranged at the tail end of the main acid pipe (2) close to the total acid tank (1).
2. The emergency acid recovery device for acid washing according to claim 1, wherein: the acid outlet pipe (6) is connected with an acid outlet standby pipeline (62) on the pipe section between the acid outlet valve (61) and the middle barrel (4), and the acid outlet standby pipeline (62) is provided with an acid outlet standby valve (63).
3. The emergency acid recovery device for acid washing according to claim 2, wherein: the spare acid outlet valve (63) is a fluorine-lined valve.
4. The emergency acid recovery device for acid washing according to claim 1, wherein: the acid inlet pipe (7) is connected with an acid inlet standby pipeline (72) on the pipe section between the acid inlet valve (71) and the acid preparation barrel (8), and the acid inlet standby pipeline (72) is provided with an acid inlet standby valve (73).
5. The emergency acid recovery device for acid washing according to claim 4, wherein: the acid inlet standby valve (73) is a fluorine lining valve.
6. The emergency acid recovery device for acid washing according to claim 1, wherein: the ceramic filter (3) is provided with a plurality of acid inlet structures, and at least one group of acid inlet structures is arranged corresponding to the number of the ceramic filter (3).
7. The emergency acid recovery device for acid washing according to claim 1, wherein: the main acid pipe (2) comprises an acid inlet section (21) which is simultaneously communicated with the acid inlet pipe (7) and the acid outlet pipe (6) and a reflux lengthening section (22) which is detachably connected with the acid inlet section (21).
8. The emergency acid recovery device for acid washing according to claim 1, wherein: the acid inlet valve (71) and the acid outlet valve (61) are fluorine-lined valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123013321.XU CN216259566U (en) | 2021-12-02 | 2021-12-02 | Emergency acid return device for acid washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123013321.XU CN216259566U (en) | 2021-12-02 | 2021-12-02 | Emergency acid return device for acid washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216259566U true CN216259566U (en) | 2022-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123013321.XU Active CN216259566U (en) | 2021-12-02 | 2021-12-02 | Emergency acid return device for acid washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216259566U (en) |
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2021
- 2021-12-02 CN CN202123013321.XU patent/CN216259566U/en active Active
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