CN220802368U - Deep treatment device for tail gas in calcium chloride production - Google Patents
Deep treatment device for tail gas in calcium chloride production Download PDFInfo
- Publication number
- CN220802368U CN220802368U CN202322415446.8U CN202322415446U CN220802368U CN 220802368 U CN220802368 U CN 220802368U CN 202322415446 U CN202322415446 U CN 202322415446U CN 220802368 U CN220802368 U CN 220802368U
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- Prior art keywords
- box
- tail gas
- calcium chloride
- air
- filter
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 title claims abstract description 24
- 229910001628 calcium chloride Inorganic materials 0.000 title claims abstract description 24
- 239000001110 calcium chloride Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000005192 partition Methods 0.000 claims abstract description 18
- 238000007664 blowing Methods 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
- 239000003570 air Substances 0.000 abstract description 33
- 239000002245 particle Substances 0.000 abstract description 8
- 239000000443 aerosol Substances 0.000 abstract description 7
- 239000012080 ambient air Substances 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000428 dust Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Separation Of Particles Using Liquids (AREA)
Abstract
The utility model aims to solve the technical problem of providing a deep treatment device for tail gas in calcium chloride production, which can reduce the discharge of calcium chloride aerosol, further reduce the concentration of particles in the tail gas and improve the quality of ambient air, and comprises a box body and a fan, wherein the lower part of the box body is communicated with a liquid collecting box, a partition plate is transversely arranged in the box body, the box body is divided into an upper part and a lower part by the partition plate, and the upper part of the box body is a gas collecting box and the lower part is a filter box; the air collecting box is communicated with an air suction port of the fan through an air outlet pipe, and the filter box is communicated with an air inlet pipe; the filter box is internally provided with a hydrophobic filter element, the hydrophobic filter element is provided with a plurality of filter cavities, the upper ends of the filter cavities are openings, the partition plate is provided with plate holes corresponding to the filter cavities one by one, and when the upper end face of the hydrophobic filter element is arranged on the bottom face of the partition plate, the plate holes are communicated with the openings of the filter cavities correspondingly.
Description
Technical Field
The utility model belongs to the technical field of environmental treatment, and particularly relates to a device for deeply treating tail gas generated in calcium chloride production.
Background
The tail gas generated in the production process of calcium chloride is mainly drying tail gas, the drying tail gas contains a large amount of water vapor and calcium chloride particles, after cyclone dust removal and water spray washing are adopted for treatment, the calcium chloride dust which is not removed and saturated water vapor form aerosol to be discharged, the requirement of ultralow emission cannot be met, and the formed smoke plume has a large influence on surrounding landscapes.
The prior study discloses a tail gas absorption system for calcium chloride production, a spray pipe is arranged in an alkali absorption tower, a plurality of spray heads are arranged on the spray pipe, and the tail gas is effectively discharged up to the standard after being completely neutralized through neutralization and filtration of the alkali absorption tower, so that no gas pollution of the discharged gas is ensured, and a filter screen is arranged at the tail end of the liquid suction pipe to prevent a circulating water pipeline from being blocked. The system performs neutralization treatment on acidic substances in the tail gas, but does not remove aerosol in the tail gas. The prior research also discloses a vertical type flow-through sieve plate foam tower for treating calcium chloride dry tail gas, which improves the washing efficiency of the tail gas, but also does not remove aerosol in the tail gas.
At present, tail gas generated in the calcium chloride production process is mainly discharged after cyclone dust removal, washing and purification, but aerosol formed by particles in the tail gas cannot be removed, so that tail gas tailing is longer, and enterprises are under larger pressure along with higher and higher environmental quality requirements.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a device for deeply treating tail gas in calcium chloride production, which can reduce the discharge of calcium chloride aerosol, further reduce the concentration of particulate matters in the tail gas and improve the quality of ambient air.
The utility model is realized by the following technical scheme:
The device comprises a box body and a fan, wherein the lower part of the box body is communicated with a liquid collecting box, a partition plate is transversely arranged in the box body, the box body is divided into an upper part and a lower part by the partition plate, and the upper part of the box body is a gas collecting box and the lower part of the box body is a filter box;
the air collecting box is communicated with an air suction port of the fan through an air outlet pipe, and the filter box is communicated with an air inlet pipe;
The filter box is internally provided with a hydrophobic filter element, the hydrophobic filter element is provided with a plurality of filter cavities, the upper ends of the filter cavities are openings, the partition plate is provided with plate holes corresponding to the filter cavities one by one, and when the upper end face of the hydrophobic filter element is arranged on the bottom face of the partition plate, the plate holes are communicated with the openings of the filter cavities correspondingly.
Further, the hydrophobic filter element is of a plate-shaped structure, the hydrophobic filter element is made of a PE substrate, and a PTFE layer is arranged on the outer surface of the hydrophobic filter element.
Further, the front and rear surfaces of the hydrophobic filter element are of a corrugated structure.
Further, the filter box and the gas collecting box are respectively communicated through pipelines at the outer sides of the box bodies, and a back blowing pipe is further arranged in the gas collecting box.
Further, the upper side of gas collection box is equipped with the air pocket, one side switch-on of air pocket has compressed air source, the top surface of air pocket communicates pulse valve and blowback pipe in proper order through the pipeline.
Further, the bottom side wall of the back blowing pipe is provided with a plurality of air nozzles which are in one-to-one correspondence with the plate holes.
Further, the liquid collecting box is of a conical bucket structure.
Compared with the prior art, the utility model has the following beneficial effects:
1. The tail gas from calcium chloride production enters the tail gas deep treatment device after cyclone dust removal and washing purification, the surface of the hydrophobic filter element can reliably intercept fine water drops formed by particles with the diameter of more than 0.1 micron and saturated steam, the intercepted substances roll into the liquid collecting box along the surface of the filter plate in the form of the water drops, and the collected liquid is sent to the washing tower to be used as circulating washing liquid. Clean gas passes through the hydrophobic filter element under the action of the attractive force of the fan, is collected in the gas collection box and is led out by the fan;
The utility model can reduce the emission of fine particles and eliminate the adverse effect of tail gas carried aerosol on the surrounding environment. The liquid generated in the treatment process can be fully recycled, and secondary pollution is avoided. Promote the improvement of the treatment of the gas pollutants in the industry and reach the level which is ahead of the national standard or the industry standard;
2. The blowback pipe is matched with the air bag to clean the hydrophobic filter element in a blowback mode regularly, so that the device can keep long-term, stable and efficient operation;
3. The hydrophobic filter element is of a plate-shaped structure, and the front surface and the rear surface of the hydrophobic filter element are of corrugated structures, so that the contact area with tail gas is greatly increased, and the filtering efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a device for deeply treating tail gas from calcium chloride production according to the present utility model;
FIG. 2 is a schematic structural view of the hydrophobic cartridge of the present utility model;
FIG. 3 is a top cross-sectional view of the hydrophobic filter element of the present utility model;
In the figure: 1. the device comprises an air inlet pipe, 2, a liquid collecting box, 3, a box body, 4, a hydrophobic filter element, 5, a filter box, 6, a partition plate, 7, a fan, 8, an air outlet pipe, 9, a gas collecting box, 10, a filter cavity, 11, a gas bag, 12, a differential pressure meter, 13, a back-blowing pipe, 14 and a pulse valve.
The specific embodiment is as follows:
exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1-3, this embodiment discloses a device for deeply treating tail gas generated in calcium chloride production, which comprises a tank body 3, a liquid collecting tank 2, a differential pressure gauge 12, an air bag 11, a pulse valve 14, a hydrophobic filter element 4 and a fan 7, wherein the lower part of the tank body 3 is communicated with the liquid collecting tank 2 through a flange structure and a bolt, and the whole liquid collecting tank 2 is of a cone-shaped bucket structure. The partition plate 6 is transversely installed in the box body 3, the partition plate 6 divides the box body 3 into an upper part and a lower part, the upper part of the box body 3 is provided with a gas collecting box 9, the lower part of the box body is provided with a filter box 5, wherein the side wall of the gas collecting box 9 is communicated with an air suction port of a fan 7 through an air outlet pipe 8, and the side wall of the filter box 5 is communicated with an air inlet pipe 1.
The hydrophobic filter core 4 is platy structure, and hydrophobic filter core 4 adopts PE base plate preparation to form, and the PE base plate can filter the particulate matter that the diameter is greater than 0.1 micron, is equipped with the PTFE layer at the surface of hydrophobic filter core 4, and the PTFE material has good hydrophobicity, avoids the water droplet to condense at its surface, designs the front and back surface of hydrophobic filter core 4 into corrugated structure in this embodiment, increases tail gas and hydrophobic filter core 4's area of contact, improves tail gas treatment effeciency. 16 filter cavities 10 are processed on the hydrophobic filter element 4, the upper end of each filter cavity 10 is provided with an opening, plate holes corresponding to the filter cavities 10 one by one are processed on the partition plate 6, the upper end of the hydrophobic filter element 4 is connected to the bottom surface of the partition plate 6 through a bolt component, the plate holes are correspondingly communicated with the openings of the filter cavities 10, and a sealing gasket is arranged between the hydrophobic filter element 4 and the partition plate 6 for preventing air leakage.
Two ports of the differential pressure meter 12 are respectively communicated with the filter box 5 and the air collecting box 9 through pipelines at the outer side of the box body 3 and are used for monitoring the differential pressure between the filter box and the air collecting box, and when the differential pressure is too large, the surface of the hydrophobic filter element 4 is blocked by particles, and the hydrophobic filter element 4 needs to be subjected to back flushing cleaning. Therefore, it is necessary to install a blowback pipe 13 laterally in the gas collection box 9, and a plurality of gas nozzles corresponding to the plate holes one by one are installed on the bottom side wall of the blowback pipe 13.
The air bag 11 is arranged above the air collection box 9, one side of the air bag 11 is communicated with a compressed air source, the top surface of the air bag 11 is sequentially communicated with the pulse valve 14 and the blowback pipe 13 through pipelines, and the pulse valve 14 is controlled by the pulse controller, so that pulse air is ensured to enter the blowback pipe 13, and blowback is carried out on each filter cavity 10.
The utility model relates to a device for deeply treating tail gas in calcium chloride production, which comprises the following specific working processes:
The tail gas from calcium chloride production enters the filter tank 5 from the air inlet pipe 1 after cyclone dust removal and washing purification, flows upwards from the bottom, passes through the hydrophobic filter element 4 at a filtering wind speed of 0.6-1.0 m/min under the suction force of the fan 7, particles in the gas are intercepted on the outer surface of the hydrophobic filter element 4, the filtered clean gas enters the filter cavity 10 through the hydrophobic filter element 4 and then enters the gas collection tank 9, and finally is pumped out by the fan 7, the intercepted particles with the diameter larger than 0.1 micron roll into the liquid collection tank 2 together with water drops, and the collected liquid is sent to the washing tower to be used as circulating washing liquid.
In order to ensure the stable dust removal efficiency of the device, the differential pressure gauge 12 monitors the differential pressure between the gas collecting tank 9 and the filter tank 5, the differential pressure is controlled to be 800-1200 Pa, and in order to ensure the stable differential pressure, the filter cavity 10 of the hydrophobic filter element 4 is cleaned by back blowing by compressed air, the back blowing pulse interval is 10s, and the back blowing pressure is 0.4-0.5 MPa. Compressed air enters the air bag 11 after passing through the pressure reducing valve, and is sprayed out by the back-blowing pipe 13 after passing through the pulse valve 14, so that instantaneous reverse pressure is generated to enter the filter cavity 10, attachments on the surface of the hydrophobic filter element 4 are removed, and the stable operation of the device is ensured. The concentration of the tail gas particles after advanced treatment is controlled below 5mg/m 3, so that the problem that the smoke of the tail gas affects the surrounding environment for a long time is fundamentally solved, and the recovered liquid is sent to a washing tower to be used as washing liquid, so that secondary pollution is avoided.
Claims (7)
1. The device is characterized by comprising a box body and a fan, wherein the lower part of the box body is communicated with a liquid collecting box, a partition plate is transversely arranged in the box body, the partition plate divides the box body into an upper part and a lower part, and the upper part of the box body is a gas collecting box and the lower part of the box body is a filter box;
the air collecting box is communicated with an air suction port of the fan through an air outlet pipe, and the filter box is communicated with an air inlet pipe;
The filter box is internally provided with a hydrophobic filter element, the hydrophobic filter element is provided with a plurality of filter cavities, the upper ends of the filter cavities are openings, the partition plate is provided with plate holes corresponding to the filter cavities one by one, and when the upper end face of the hydrophobic filter element is arranged on the bottom face of the partition plate, the plate holes are communicated with the openings of the filter cavities correspondingly.
2. The device for deeply treating tail gas generated in calcium chloride production according to claim 1, wherein the hydrophobic filter element is of a plate-shaped structure, the hydrophobic filter element is made of a PE substrate, and a PTFE layer is arranged on the outer surface of the hydrophobic filter element.
3. The device for deeply treating tail gas from calcium chloride production according to claim 2, wherein the front and rear surfaces of the hydrophobic filter element are corrugated structures.
4. The device for deeply treating tail gas generated in calcium chloride production according to claim 1, further comprising a differential pressure gauge, wherein two ports of the differential pressure gauge are respectively communicated with the filter tank and the gas collecting tank through pipelines at the outer side of the tank body, and a back blowing pipe is further arranged in the gas collecting tank.
5. The device for deeply treating tail gas generated in calcium chloride production according to claim 4, wherein an air bag is arranged above the air collection box, a compressed air source is connected to one side of the air bag, and the top surface of the air bag is sequentially communicated with the pulse valve and the back blowing pipe through a pipeline.
6. The device for deeply treating tail gas from calcium chloride production according to claim 5, wherein a plurality of air nozzles corresponding to the holes of the plate are arranged on the side wall of the bottom of the back blowing pipe.
7. The apparatus for deep treatment of tail gas from calcium chloride production according to any one of claims 1 to 6, wherein the header tank has a conical bucket structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322415446.8U CN220802368U (en) | 2023-09-06 | 2023-09-06 | Deep treatment device for tail gas in calcium chloride production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322415446.8U CN220802368U (en) | 2023-09-06 | 2023-09-06 | Deep treatment device for tail gas in calcium chloride production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220802368U true CN220802368U (en) | 2024-04-19 |
Family
ID=90704853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322415446.8U Active CN220802368U (en) | 2023-09-06 | 2023-09-06 | Deep treatment device for tail gas in calcium chloride production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220802368U (en) |
-
2023
- 2023-09-06 CN CN202322415446.8U patent/CN220802368U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |