CN210845785U - Phthalic anhydride device tail gas aftertreatment device - Google Patents
Phthalic anhydride device tail gas aftertreatment device Download PDFInfo
- Publication number
- CN210845785U CN210845785U CN201921353983.1U CN201921353983U CN210845785U CN 210845785 U CN210845785 U CN 210845785U CN 201921353983 U CN201921353983 U CN 201921353983U CN 210845785 U CN210845785 U CN 210845785U
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- CN
- China
- Prior art keywords
- fixedly connected
- box body
- tail gas
- sliding
- phthalic anhydride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 title claims abstract description 16
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000292 calcium oxide Substances 0.000 claims abstract description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004744 fabric Substances 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 28
- 238000001914 filtration Methods 0.000 abstract description 21
- 239000001569 carbon dioxide Substances 0.000 abstract description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 14
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000009795 derivation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 34
- 230000000694 effects Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 230000036541 health Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 206010010904 Convulsion Diseases 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- -1 cyclic anhydride Chemical class 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field of tail gas treatment, in particular to a phthalic anhydride device tail gas post-treatment device, which comprises a base, wherein the top of the base is fixedly connected with a box body, the top inside the box body is fixedly connected with a supporting plate, the left side surface of the supporting plate and the right side surface of the inner wall of the box body are both provided with a chute, and a slide block is slidably connected in the chute; the utility model discloses, can carry out first adsorption filtration to carbon dioxide through setting up the calcium oxide filter screen, reduce carbon dioxide content in the gas, the device adopts the calcium oxide filter screen, the cloth bag filter, semi-gear and ratch, the aftertreatment to tail gas has been realized, carbon dioxide to containing in the tail gas has been reached and has been adsorbed filterable purpose, environmental pollution and the healthy problem of harm people have been avoided, through setting up the filter, water tank and tap, the filtration collection and the derivation of the moisture that contains in the tail gas have been realized, whole device is rational in infrastructure, the operation is thus simple, therefore, the clothes hanger is strong in practicability.
Description
Technical Field
The utility model belongs to the technical field of the tail gas treatment, concretely relates to phthalic anhydride device tail gas aftertreatment device.
Background
Phthalic anhydride, abbreviated as phthalic anhydride, is a cyclic anhydride formed by intramolecular dehydration of phthalic acid. Phthalic anhydride is a white solid, is an important raw material in chemical engineering, is particularly used for manufacturing a plasticizer, can generate a large amount of tail gas in the manufacturing process, further causes air pollution, and is purified by mostly adopting catalytic reaction in the prior art.
However, after the tail gas is subjected to catalytic treatment, the treated tail gas still can be decomposed into carbon dioxide and water, and the direct emission can cause pollution to air, greatly harm the health of people, and is not beneficial to energy conservation, environmental protection and guarantee of good living environment of people.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a phthalic anhydride device tail gas aftertreatment device has the characteristics that the filter effect is good and convenient to use.
In order to achieve the above object, the utility model provides a following technical scheme: a phthalic anhydride device tail gas aftertreatment device comprises a base, wherein the top of the base is fixedly connected with a box body, the top inside the box body is fixedly connected with a supporting plate, the left side surface of the supporting plate and the right side surface of the inner wall of the box body are respectively provided with a sliding groove, the sliding grooves are in sliding connection with sliding blocks, the opposite surfaces of the two sliding blocks are fixedly connected with a calcium oxide filter screen, the supporting plate and the box body are respectively and fixedly connected with a sliding sleeve, the sliding sleeve is in sliding connection with a sliding rod, the right end of the sliding rod penetrates through the sliding sleeve fixed on the box body and is fixedly connected with a toothed bar, the bottom of the toothed bar is meshed with a half gear, the back surface of the half gear is fixedly connected with a motor, the motor is fixedly connected to the side surface of the box body, the sliding rod is provided, the left end of the slide bar penetrates through a sliding sleeve fixed on the supporting plate and is fixedly connected with a baffle, a first spring is sleeved on the surface of the slide bar, one end of the first spring is fixedly connected onto the baffle, the other end of the first spring is fixedly connected onto the sliding sleeve fixed on the supporting plate, a fan is fixedly connected to the side face of the box body, a pipeline is fixedly connected to an air outlet of the fan, a pipe sleeve is arranged on the surface of the pipeline in a penetrating mode, the pipe sleeve is fixedly connected to the top of the inner wall of the box body, a plurality of spray heads are arranged at the bottom of the pipeline, grooves are formed in the left side face and the right side face of the inner wall of the box body, a filter plate is connected in the grooves in a clamping mode, a second spring is fixedly.
Preferably, the side face of the box body is fixedly connected with an air inlet pipe, and the top of the box body is provided with an air outlet.
Preferably, the bottom of the box body is provided with a water tank, the bottom of the water tank is inclined, and the inclination angle is 30 degrees.
Preferably, a faucet is arranged on the side face of the box body, and the front face of the box body is movably connected with a box door through a hinge.
Preferably, the front side of the box door is fixedly connected with a handle, and the back side of the box door is provided with a sealing gasket.
Preferably, the front of the box body is provided with a button switch, and the button switch is respectively electrically connected with the motor and the fan through leads.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses, can carry out the first adsorption filtration to carbon dioxide through setting up the calcium oxide filter screen, reduce carbon dioxide content in the gas, water can drop to filter department through the calcium oxide filter screen, and then be convenient for store in the water tank, the motor work can drive half gear and rotate, through the constant meshing and separation with the ratch, with the help of the elasticity of first spring, can make the slide bar drive the sack filter and move about, increase the area of contact of sack filter and gas, improve filtration efficiency, be provided with soda lime absorption particle on the sack filter, can carry out the secondary adsorption filtration to carbon dioxide, greatly ensure the purifying effect, the filter is used for filtering aquatic impurity, the device adopts calcium oxide filter screen, the sack filter, half gear and ratch, realized the aftertreatment to the tail gas, reached the purpose of adsorbing the filtration to the carbon dioxide that contains in the tail gas, the problem of environmental pollution and harm people's health has been avoided, through setting up filter, water tank and tap, has realized collecting and deriving the filtration of the moisture that contains in the tail gas, and whole device is rational in infrastructure, easy operation, the practicality is strong.
2. The utility model discloses, through fan work, can spray outside wind pump sending to in the pipeline and through the shower nozzle, be convenient for clear up the sack filter, guarantee sack filter's filtration efficiency and life, the intake pipe is used for leading-in tail gas after handling, the gas outgoing after the gas vent is convenient for filter, button switch is used for the operating condition who controls motor and fan respectively, the chamber door is opened to people of being convenient for through the handle, tap is used for deriving the water in the water tank, the water tank is used for storing the water after filtering, the shape of spout and slider is T shape, slide effect through spout and slider, be convenient for people take out the calcium oxide filter screen, clear up the change to it.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a front view section of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged schematic structural view of the position A of the present invention;
in the figure: 1. a base; 2. a box body; 3. a groove; 4. a cloth bag filter; 5. a slider; 6. a chute; 7. an air inlet pipe; 8. a calcium oxide filter screen; 9. a baffle plate; 10. a first spring; 11. a support plate; 12. a sliding sleeve; 13. pipe sleeve; 14. an exhaust port; 15. a pipeline; 16. a fan; 17. a slide bar; 18. a half gear; 19. mounting holes; 20. mounting a rod; 21. a faucet; 22. a water tank; 23. a filter plate; 24. a hinge; 25. a box door; 26. a gasket; 27. a handle; 28. a motor; 29. a rack bar; 30. a second spring; 31. a spray head; 32. a push button switch.
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.
Examples
Referring to fig. 1-3, the present invention provides the following technical solutions: a phthalic anhydride device tail gas aftertreatment device comprises a base 1, wherein a box body 2 is fixedly connected to the top of the base 1, a supporting plate 11 is fixedly connected to the top of the inner part of the box body 2, sliding grooves 6 are formed in the left side surface of the supporting plate 11 and the right side surface of the inner wall of the box body 2, sliding blocks 5 are connected in the sliding grooves 6 in a sliding mode, the sliding grooves 6 and the sliding blocks 5 are in a T shape, a calcium oxide filter screen 8 is convenient to take out by people through the sliding effects of the sliding grooves 6 and the sliding blocks 5 and is cleaned and replaced, calcium oxide filter screens 8 are fixedly connected to opposite surfaces of the two sliding blocks 5, the calcium oxide filter screen 8 can adsorb and filter carbon dioxide for the first time, the content of carbon dioxide in gas is reduced, water can fall to a filter plate 23 through the calcium oxide filter screen 8 and is further convenient to be stored in a water tank 22, a sliding rod 17 is connected in the sliding sleeve 12 in a sliding manner, the right end of the sliding rod 17 penetrates through the sliding sleeve 12 fixed on the box body 2 and is fixedly connected with a toothed bar 29, a half gear 18 is meshed at the bottom of the toothed bar 29, a motor 28 works to drive the half gear 18 to rotate, the sliding rod 17 can drive the cloth filter 4 to move left and right by means of continuous meshing and separation with the toothed bar 29 and the elasticity of a first spring 10, so that the contact area of the cloth filter 4 and gas is increased, the filtering efficiency is improved, the back of the half gear 18 is fixedly connected with the motor 28, the motor 28 is fixedly connected to the side face of the box body 2, a plurality of mounting holes 19 are formed in the sliding rod 17, a mounting rod 20 is sleeved in each mounting hole 19, the cloth filter 4 is sleeved on the surface of the mounting rod 20, sodium lime absorption particles are arranged on the cloth filter 4, and can perform secondary, the purification effect is greatly ensured, the left end of the sliding rod 17 penetrates through a sliding sleeve 12 fixed on a support plate 11 and is fixedly connected with a baffle plate 9, a first spring 10 is sleeved on the surface of the sliding rod 17, one end of the first spring 10 is fixedly connected on the baffle plate 9, the other end of the first spring 10 is fixedly connected on the sliding sleeve 12 fixed on the support plate 11, a fan 16 is fixedly connected to the side surface of the box body 2, the fan 16 works to pump external air into a pipeline 15 and spray the external air through a spray head 31, so that the cloth bag filter 4 is convenient to clean, the filtering efficiency and the service life of the cloth bag filter 4 are ensured, a pipeline 15 is fixedly connected to an air outlet of the fan 16, a pipe sleeve 13 is arranged on the surface of the pipeline 15 in a penetrating manner, the pipe sleeve 13 is fixedly connected on the top of the inner wall of the box body 2, and a plurality, recess 3 has all been seted up to the inner wall left and right sides face of box 2, the joint has filter 23 in the recess 3, the top and the equal fixedly connected with second spring 30 in bottom of 3 inner walls of recess, the one end fixed connection of second spring 30 is on filter 23, filter 23 is used for filtering aquatic impurity, the device adopts calcium oxide filter screen 8, bag filter 4, semi-gear 18 and ratch 29, the aftertreatment to tail gas has been realized, reached and adsorbed filterable purpose to the carbon dioxide that contains in the tail gas, the problem of environmental pollution and harm people's health has been avoided, through setting up filter 23, water tank 22 and tap 21, the filtration collection and the derivation of the moisture that contains in the tail gas have been realized, whole device is rational in infrastructure, and easy operation, therefore, the clothes hanger is strong in practicability.
Specifically, the side fixedly connected with intake pipe 7 of box 2, the top of box 2 is provided with gas vent 14, and intake pipe 7 is used for leading-in tail gas after the processing, and the gas vent 14 is convenient for the gas outgoing after filtering.
Specifically, the bottom of box 2 is provided with water tank 22, the bottom of water tank 22 sets up to the slope, and inclination is 30, and water tank 22 is used for storing the water after filtering.
Specifically, a water tap 21 is arranged on the side surface of the box body 2, the water tap 21 is used for guiding out water in the water tank 22, and a box door 25 is movably connected to the front surface of the box body 2 through a hinge 24.
Specifically, a handle 27 is fixedly connected to the front surface of the box door 25, a sealing gasket 26 is arranged on the back surface of the box door 25, and people can open the box door 25 conveniently through the handle 27.
Specifically, the front surface of the box body 2 is provided with a button switch 32, the button switch 32 is electrically connected with the motor 28 and the fan 16 through wires, and the button switch 32 is used for controlling the working states of the motor 28 and the fan 16 respectively.
The utility model discloses a theory of operation and use flow: the utility model discloses, during the use, at first make the flue gas pass through intake pipe 7 and get into in the box 2, at first carry out first adsorption filtration to the carbon dioxide in the gas through calcium oxide filter screen 8, the moisture that contains in the tail gas drops to filter 23 and gets into in water tank 22 after filtering, then the tail gas filters through sack filter 4 once more, soda lime absorbed particle on sack filter 4 carries out secondary adsorption filtration to the carbon dioxide that does not filter completely in the tail gas, control motor 28 work through button switch 32, motor 28 drives half gear 18 and rotates, through the constant meshing of half gear 18 and ratch 29, with the help of the elasticity of first spring 10, make sack filter 4 move about, increase the contact efficiency of sack filter 4 and tail gas, improve the adsorption filtration efficiency to the carbon dioxide in the tail gas, then make the gas after filtering discharge through gas vent 14, after the use, through the work of button switch 32 control fan 16, 16 convulsions of fan are cleared up sack filter 4 to pipeline 15 and through 31 blowout of shower nozzle, guarantee sack filter 4's result of use, open tap 21 simultaneously and can derive the water in the water tank 22, use a period after the device, can open chamber door 25, with the help of spout 6 and slider 5's effect, take off calcium oxide filter screen 8 and clear up it and change, it can to clear up filter 23 simultaneously.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a phthalic anhydride device tail gas aftertreatment device, includes base (1), its characterized in that: the top of the base (1) is fixedly connected with a box body (2), the top inside the box body (2) is fixedly connected with a supporting plate (11), the left side surface of the supporting plate (11) and the right side surface of the inner wall of the box body (2) are respectively provided with a sliding groove (6), the sliding grooves (6) are connected with sliding blocks (5) in a sliding manner, the opposite surfaces of the two sliding blocks (5) are fixedly connected with a calcium oxide filter screen (8), the supporting plate (11) and the box body (2) are respectively and fixedly connected with a sliding sleeve (12), the sliding sleeve (12) is connected with a sliding rod (17) in a sliding manner, the right end of the sliding rod (17) penetrates through the sliding sleeve (12) fixed on the box body (2) and is fixedly connected with a toothed bar (29), the bottom of the toothed bar (29) is meshed with a half gear (18), the back surface of the half gear (18), the cloth bag filter is characterized in that the sliding rod (17) is provided with a plurality of mounting holes (19), mounting rods (20) are sleeved in the mounting holes (19), the surface of each mounting rod (20) is sleeved with a cloth bag filter (4), the left end of each sliding rod (17) penetrates through a sliding sleeve (12) fixed on the supporting plate (11) and is fixedly connected with a baffle (9), the surface of each sliding rod (17) is sleeved with a first spring (10), one end of each first spring (10) is fixedly connected onto the baffle (9), the other end of each first spring (10) is fixedly connected onto the sliding sleeve (12) fixed on the supporting plate (11), the side surface of the box body (2) is fixedly connected with a fan (16), an air outlet of the fan (16) is fixedly connected with a pipeline (15), a pipe sleeve (13) is arranged on the surface of the pipeline (15) in a penetrating manner, and the pipe sleeve (13) is fixedly connected to the, the bottom of pipeline (15) is provided with a plurality of shower nozzle (31), the inner wall left and right sides face of box (2) all is seted up recess (3), the joint has filter (23) in recess (3), the equal fixedly connected with second spring (30) in top and the bottom of recess (3) inner wall, the one end fixed connection of second spring (30) is on filter (23).
2. The phthalic anhydride plant tail gas aftertreatment device of claim 1, wherein: the side face of the box body (2) is fixedly connected with an air inlet pipe (7), and an air outlet (14) is formed in the top of the box body (2).
3. The phthalic anhydride plant tail gas aftertreatment device of claim 1, wherein: the bottom of box (2) is provided with water tank (22), the bottom of water tank (22) sets up to the slope, and inclination is 30.
4. The phthalic anhydride plant tail gas aftertreatment device of claim 1, wherein: a faucet (21) is arranged on the side face of the box body (2), and the front face of the box body (2) is movably connected with a box door (25) through a hinge (24).
5. The phthalic anhydride plant tail gas aftertreatment device of claim 4, wherein: the front surface of the box door (25) is fixedly connected with a handle (27), and the back surface of the box door (25) is provided with a sealing gasket (26).
6. The phthalic anhydride plant tail gas aftertreatment device of claim 1, wherein: the front surface of the box body (2) is provided with a button switch (32), and the button switch (32) is respectively electrically connected with the motor (28) and the fan (16) through leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353983.1U CN210845785U (en) | 2019-08-20 | 2019-08-20 | Phthalic anhydride device tail gas aftertreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353983.1U CN210845785U (en) | 2019-08-20 | 2019-08-20 | Phthalic anhydride device tail gas aftertreatment device |
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| Publication Number | Publication Date |
|---|---|
| CN210845785U true CN210845785U (en) | 2020-06-26 |
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ID=71298331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921353983.1U Active CN210845785U (en) | 2019-08-20 | 2019-08-20 | Phthalic anhydride device tail gas aftertreatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210845785U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111888847A (en) * | 2020-08-24 | 2020-11-06 | 浙江明泉工业装备科技有限公司 | Dust innocent treatment mechanism for coating equipment |
| CN111957174A (en) * | 2020-07-31 | 2020-11-20 | 吴菊芬 | A cooling absorbing device for chemical industry tail gas treatment |
| CN112495072A (en) * | 2020-12-23 | 2021-03-16 | 朱加招 | Cement plant flue gas pollutant treatment facility |
-
2019
- 2019-08-20 CN CN201921353983.1U patent/CN210845785U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957174A (en) * | 2020-07-31 | 2020-11-20 | 吴菊芬 | A cooling absorbing device for chemical industry tail gas treatment |
| CN111888847A (en) * | 2020-08-24 | 2020-11-06 | 浙江明泉工业装备科技有限公司 | Dust innocent treatment mechanism for coating equipment |
| CN112495072A (en) * | 2020-12-23 | 2021-03-16 | 朱加招 | Cement plant flue gas pollutant treatment facility |
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Effective date of registration: 20231114 Granted publication date: 20200626 |
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