CN210385270U - Tail gas absorbing device for oxidation workshop - Google Patents
Tail gas absorbing device for oxidation workshop Download PDFInfo
- Publication number
- CN210385270U CN210385270U CN201920681725.XU CN201920681725U CN210385270U CN 210385270 U CN210385270 U CN 210385270U CN 201920681725 U CN201920681725 U CN 201920681725U CN 210385270 U CN210385270 U CN 210385270U
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- China
- Prior art keywords
- waste gas
- purification tower
- circulating water
- acid mist
- tower body
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 17
- 230000003647 oxidation Effects 0.000 title claims abstract description 13
- 239000002912 waste gas Substances 0.000 claims abstract description 52
- 239000007789 gas Substances 0.000 claims abstract description 40
- 238000000746 purification Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 26
- 239000003595 mist Substances 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000006303 photolysis reaction Methods 0.000 claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 230000015843 photosynthesis, light reaction Effects 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 14
- 238000004332 deodorization Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000011152 fibreglass Substances 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 3
- 238000006298 dechlorination reaction Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 14
- 238000003916 acid precipitation Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 2
- 241000894006 Bacteria Species 0.000 description 12
- 238000003756 stirring Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 230000001877 deodorizing effect Effects 0.000 description 4
- 239000012717 electrostatic precipitator Substances 0.000 description 4
- 150000007523 nucleic acids Chemical class 0.000 description 4
- 102000039446 nucleic acids Human genes 0.000 description 4
- 108020004707 nucleic acids Proteins 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 206010027439 Metal poisoning Diseases 0.000 description 3
- 208000008127 lead poisoning Diseases 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 208000004998 Abdominal Pain Diseases 0.000 description 1
- 208000014644 Brain disease Diseases 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- 206010010774 Constipation Diseases 0.000 description 1
- 206010010904 Convulsion Diseases 0.000 description 1
- 208000032274 Encephalopathy Diseases 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 208000013403 hyperactivity Diseases 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a tail gas absorption device for an oxidation workshop, which comprises a production workshop, a Roots blower, an exhaust pipeline, a waste gas filtering mechanism, an activated carbon adsorption filter, an acid mist purification tower, a deodorization box, a glass fiber reinforced plastic blower, a standard discharge tower and a UV photolysis lamp, and the utility model discloses the arrangement of the waste gas filtering mechanism effectively realizes the filtration of waste gas and prevents dust particles from causing the increase of the workload of subsequent waste gas treatment; the acid mist purification tower is arranged, and the circulating pump sprays the medicament water in the circulating water tank to the waste gas through the circulating water pipe, so that the acid mist in the waste gas is neutralized, the emission of the acid mist is effectively reduced, and the acid rain is avoided; the setting of clean shot because there is higher liquid holdup in the space department of packing layer, can make the dwell time who purifies interior liquid of tower body increase through the setting of clean shot to increase the double-phase contact time of gas-liquid, improved the mass transfer efficiency of packing layer.
Description
Technical Field
The utility model belongs to the technical field of tail gas absorbing device, especially, relate to a tail gas absorbing device is used in oxidation workshop.
Background
According to the emission regulation related to non-ferrous metal smelting in China, special dust removal and water washing equipment for metal dust and gas in tail gas in the smelting process of a smelting furnace is required to be matched, particularly lead poisoning can cause intelligence reduction and lead poisoning encephalopathy expressions such as coma and convulsion, lead poisoning of children can cause abdominal pain, constipation, anemia, hyperactivity, easiness in impulsion and the like, and damage to central nerves and cells of children is irreversible, so that the treatment requirement of the discharged tail gas is higher in the lead ingot smelting process, and the current tail gas treatment device cannot meet the treatment requirement standard.
The invention discloses a novel tail gas absorption device with the Chinese patent publication number of CN 208448996U, and the invention provides a novel tail gas absorption device, which comprises a base, wherein a first water storage tank is arranged at the top of the base, a first stirring motor is fixedly arranged at one side of the bottom of the first water storage tank, a roller is fixedly connected with one side of the first stirring motor through a transmission rod, three groups of first stirring paddles are fixedly arranged at the outer side of the roller, tail gas flows into an inner cavity of the roller through a second air inlet and then is discharged through an air outlet hole at the outer side surface of the roller, so that the tail gas is fully contacted with absorption liquid, the tail gas absorption efficiency is improved, the roller and the first stirring paddles are driven by the first stirring motor to rotate so that the tail gas and the absorption liquid are fully mixed, the tail gas absorption efficiency is high, the tail gas after primary absorption, flows into an inner cavity of an absorption tower through the first, the second stirring motor drives the second stirring paddle to rotate so as to stir the tail gas, and the tail gas is absorbed more thoroughly. But present novel tail gas absorbing device still has and can not handle the acid mist in the waste gas, discharges and arouses acid rain easily in the atmosphere to cause the destruction in field, house and crops, can not adsorb waste gas and the foul smell carries out the photodissociation, cause the problem that the environment worsens.
Therefore, the invention of the tail gas absorption device for the oxidation workshop is very necessary.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a tail gas absorbing device is used in oxidation workshop to solve current novel tail gas absorbing device and still having the acid mist that can not handle in the waste gas, discharge and arouse the acid rain easily in the atmosphere, thereby cause the field, house and the destroy of crops, can not adsorb waste gas and the stench carries out the photodissociation, cause the problem that the environment worsens. A tail gas absorption device for an oxidation workshop comprises a production workshop, a Roots blower, an exhaust pipeline, a waste gas filtering mechanism, an activated carbon adsorption filter, an acid mist purification tower, a deodorization box, a glass fiber reinforced plastic blower, a standard emission tower and a UV photolysis lamp, wherein the Roots blower is respectively connected with the production workshop and the waste gas filtering mechanism through the exhaust pipeline; the exhaust pipeline is provided with a plurality of positions; the waste gas filtering mechanism is connected with the activated carbon adsorption filter through an exhaust pipeline; the activated carbon adsorption filter is connected with the acid mist purification tower through an exhaust pipeline; two ends of the deodorization box are respectively connected with the acid mist purification tower and the glass fiber reinforced plastic fan through exhaust pipelines; the glass fiber reinforced plastic fan is connected with the standard discharge tower through a smoke exhaust pipeline; UV photodissociation lamp adopts a plurality ofly, and the alternating expression setting is in the deodorization incasement.
The waste gas filtering mechanism comprises a tower body, a primary filter screen, a high-efficiency filter screen and an electrostatic dust collector, wherein the primary filter screen and the high-efficiency filter screen are arranged in the tower body; the electrostatic dust collector is arranged at the upper end inside the tower body.
The acid mist purification tower comprises a purification tower body, a packing layer, a circulating water tank, a circulating pump, a medicine adding barrel, a circulating water pipe, a spray header and hollow balls, wherein the packing layer is provided with 2 layers and is embedded in the purification tower body; the circulating water tank is arranged at the bottom of the purification tower body; the circulating pump is respectively connected with the circulating water tank and the spray header through a circulating water pipe; the medicine feeding barrel is arranged on one side of the purification tower body and is connected with the circulating water tank through a guide pipe; the spray header is arranged above the packing layer; the hollow ball adopts a plurality of, sets up to 2 layers, and every layer all inlays the dress in the below of packing layer.
The UV photolysis lamp specifically adopts a G10q type ozone waste gas treatment UV lamp, and ultraviolet light beams generated by the UV photolysis lamp irradiate waste gas to enable organic or inorganic high molecular compound molecular chains to react with ozone to generate low molecular compounds under the irradiation of high-energy ultraviolet light beams, and the high-energy UV light beams are utilized to crack molecular bonds of bacteria in malodorous gas, destroy nucleic acids of the bacteria, and then carry out oxidation reaction through the ozone, so that the aims of deodorizing and killing the bacteria are thoroughly achieved.
The hollow ball specifically adopts the XG-KXQ type high-adsorptivity hollow ball for removing chlorine and oxygen, and the retention time of liquid in the purification tower body can be prolonged by arranging the hollow ball because the gap of the packing layer has higher liquid holdup, so that the contact time of gas phase and liquid phase is prolonged, and the mass transfer efficiency of the packing layer is improved.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses waste gas filtering mechanism's setting, after waste gas entered the tower body, at first carried out the dust of big granule in the primary filter screen memorability filtration waste gas, filtered through high-efficient filter screen again, adsorbed through the dust of electrostatic precipitator in to waste gas at last, and effectual realization prevents that the dust granule from causing follow-up exhaust-gas treatment's work load increase to the filtration of waste gas.
2. The utility model discloses a setting of acid mist purifying tower, after waste gas enters into the purification tower body, add the neutralization medicament of medicine bucket to the circulating water inslot, the circulating pump sprays waste gas through circulating pipe with the medicament water in the circulating water groove, reaches the acid mist in the waste gas and carries out neutralization, and the emission of effectual reduction acid mist avoids the appearance of acid rain.
3. The utility model discloses a setting of clean shot because the space department of packing layer has higher liquid holdup, can make the dwell time who purifies interior liquid of tower body increase through setting up of clean shot to increased the double-phase contact time of gas-liquid, improved the mass transfer efficiency of packing layer.
4. The utility model discloses a setting of UV photodissociation lamp, the ultraviolet ray beam that UV photodissociation lamp produced shines waste gas, makes organic or inorganic macromolecular compound molecular chain, under high energy ultraviolet ray beam shines, reacts with ozone and generates low molecular compound, utilizes the molecular bond of bacterium in the high energy UV light beam schizolysis foul gas, destroys the nucleic acid of bacterium, and rethread ozone carries out oxidation reaction, thoroughly reaches the deodorization and kills the purpose of bacterium.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the exhaust gas filtering mechanism of the present invention.
Fig. 3 is a schematic structural view of the acid mist purification tower of the present invention.
Fig. 4 is a schematic view of the structure of the deodorizing chamber and the UV photolysis lamp according to the present invention.
In the figure:
1-production workshop, 2-roots blower, 3-exhaust pipeline, 4-waste gas filtering mechanism, 41-tower body, 42-primary filter screen, 43-high efficiency filter screen, 44-electrostatic precipitator, 5-activated carbon adsorption filter, 6-acid mist purification tower, 61-purification tower body, 62-filler layer, 63-circulating water tank, 64-circulating pump, 65-medicine adding barrel, 66-circulating water pipe, 67-spray header, 68-hollow ball, 7-deodorization box, 8-glass fiber reinforced plastic blower, 9-standard discharge tower and 10-UV photolysis lamp.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
as shown in figures 1 to 4
The utility model provides a tail gas absorption device for an oxidation workshop, which comprises a production workshop 1, a Roots blower 2, an exhaust pipeline 3, a waste gas filtering mechanism 4, an activated carbon adsorption filter 5, an acid mist purification tower 6, a deodorization box 7, a glass fiber reinforced plastic blower 8, a standard discharge tower 9 and a UV photolysis lamp 10, wherein the Roots blower 2 is respectively connected with the production workshop 1 and the waste gas filtering mechanism 4 through the exhaust pipeline 3; the exhaust pipeline 3 adopts a plurality of positions; the waste gas filtering mechanism 4 is connected with an activated carbon adsorption filter 5 through an exhaust pipeline 3; the activated carbon adsorption filter 5 is connected with the acid mist purification tower 6 through an exhaust pipeline 3; two ends of the deodorization box 7 are respectively connected with the acid mist purification tower 6 and the glass fiber reinforced plastic fan 8 through the exhaust pipeline 3; the glass fiber reinforced plastic fan 8 is connected with the standard discharge tower 9 through a smoke discharge pipeline; the UV photolysis lamp 10 is provided in a plurality of staggered form in the deodorization tank 7.
The waste gas filtering mechanism 4 comprises a tower body 41, a primary filter screen 42, a high-efficiency filter screen 43 and an electrostatic dust collector 44, wherein the primary filter screen 42 and the high-efficiency filter screen 43 are both arranged in the tower body 41; the electrostatic precipitator 44 is provided at an upper end of the inside of the tower body 41.
The acid mist purification tower 6 comprises a purification tower body 61, a filler layer 62, a circulating water tank 63, a circulating pump 64, a dosing barrel 65, a circulating water pipe 66, a spray header 67 and hollow balls 68, wherein the filler layer 62 is arranged into 2 layers and is embedded in the purification tower body 61; the circulating water tank 63 is arranged at the bottom of the purification tower body 61; the circulating pump 64 is respectively connected with a circulating water tank 63 and a spray header 67 through a circulating water pipe 66; the medicine adding barrel 65 is arranged on one side of the purification tower body 61 and is connected with the circulating water tank 63 through a guide pipe; the spray header 67 is arranged above the packing layer 62; the hollow balls 68 are arranged in 2 layers, and each layer is embedded below the filler layer 62.
The UV photolysis lamp 10 specifically adopts a G10q type ozone waste gas treatment UV lamp, and UV ultraviolet light beams irradiate waste gas to enable organic or inorganic high molecular compound molecular chains to react with ozone to generate low molecular compounds under the irradiation of high-energy ultraviolet light beams, and the high-energy UV light beams are utilized to crack molecular bonds of bacteria in malodorous gas, destroy nucleic acids of the bacteria, and then carry out oxidation reaction through ozone, thereby thoroughly achieving the purposes of deodorizing and killing the bacteria.
The hollow ball 68 is specifically an XG-KXQ type chlorine and oxygen removal high-adsorbability hollow ball, and due to the fact that the gap of the packing layer 62 has high liquid holdup, the retention time of liquid in the purification tower body 61 can be prolonged through the arrangement of the hollow ball 68, so that the contact time of gas phase and liquid phase is prolonged, and the mass transfer efficiency of the packing layer 62 is improved.
Principle of operation
In the utility model, when in use, the Roots blower 2 extracts the tail gas in the workshop 1 through the exhaust pipe 3 and discharges the tail gas into the waste gas filtering mechanism 4, after the waste gas enters the tower body 41, firstly, the primary filter 42 filters the large-particle dust in the waste gas, then, the high-efficiency filter 43 filters the dust, finally, the dust in the waste gas is absorbed through the electrostatic precipitator 44, the waste gas is effectively filtered, after the waste gas enters the activated carbon adsorption filter 5 through the exhaust pipe 3, the waste gas is purified and absorbed through the activated carbon, and then, the waste gas is discharged into the acid mist purification tower 6, after the waste gas enters the purification tower body 61, the medicine adding barrel 65 adds neutralizing agent into the circulating water tank 63, the circulating pump 64 sprays the waste gas through the circulating water pipe 66 with the agent water in the circulating water tank 63, the acid mist in the waste gas is neutralized, because the gap of the packing layer 62 has higher liquid holdup, the retention time of the liquid in the purification tower body 61 can be prolonged through the arrangement of the hollow ball 68, thereby increasing the contact time of gas phase and liquid phase, improving the mass transfer efficiency of the packing layer 62, effectively reducing the emission of acid mist, leading the waste gas after the deacidification treatment to enter the deodorization box 7, leading the ultraviolet light beam generated by the UV photolysis lamp 10 to irradiate the waste gas, leading the molecular chain of the organic or inorganic macromolecular compound, the method comprises the steps of reacting with ozone to generate low-molecular-weight compounds under the irradiation of high-energy ultraviolet light beams, cracking molecular bonds of bacteria in malodorous gas by using the high-energy UV light beams, destroying nucleic acids of the bacteria, then carrying out oxidation reaction by using ozone, thoroughly achieving the purpose of deodorizing and killing the bacteria, extracting waste gas subjected to multi-stage treatment by using a glass fiber reinforced plastic fan 8 after reaching the emission standard, and then discharging the waste gas through a standard-reaching discharge tower 9.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (5)
1. The utility model provides a tail gas absorbing device for oxidation workshop which characterized in that: the device comprises a production workshop (1), a Roots blower (2), an exhaust pipeline (3), a waste gas filtering mechanism (4), an activated carbon adsorption filter (5), an acid mist purification tower (6), a deodorization box (7), a glass fiber reinforced plastic fan (8), a standard discharge tower (9) and a UV photolysis lamp (10), wherein the Roots blower (2) is respectively connected with the production workshop (1) and the waste gas filtering mechanism (4) through the exhaust pipeline (3); the exhaust pipeline (3) adopts a plurality of positions; the waste gas filtering mechanism (4) is connected with the activated carbon adsorption filter (5) through an exhaust pipeline (3); the activated carbon adsorption filter (5) is connected with the acid mist purification tower (6) through an exhaust pipeline (3); two ends of the deodorization box (7) are respectively connected with the acid mist purification tower (6) and the glass fiber reinforced plastic fan (8) through the exhaust pipeline (3); the glass fiber reinforced plastic fan (8) is connected with the standard discharge tower (9) through a smoke discharge pipeline; the UV photolysis lamp (10) is provided with a plurality of UV photolysis lamps, and the UV photolysis lamps are arranged in the deodorization box (7) in a staggered mode.
2. The exhaust gas absorption device for an oxidation plant according to claim 1, wherein: the waste gas filtering mechanism (4) comprises a tower body (41), a primary filter screen (42), a high-efficiency filter screen (43) and an electrostatic dust collector (44), wherein the primary filter screen (42) and the high-efficiency filter screen (43) are arranged inside the tower body (41); the electrostatic dust collector (44) is arranged at the upper end of the interior of the tower body (41).
3. The exhaust gas absorption device for an oxidation plant according to claim 1, wherein: the acid mist purification tower (6) comprises a purification tower body (61), a packing layer (62), a circulating water tank (63), a circulating pump (64), a medicine adding barrel (65), a circulating water pipe (66), a spray header (67) and hollow balls (68), wherein the packing layer (62) is arranged into 2 layers and is embedded in the purification tower body (61); the circulating water tank (63) is arranged at the bottom of the purification tower body (61); the circulating pump (64) is respectively connected with the circulating water tank (63) and the spray header (67) through a circulating water pipe (66); the medicine adding barrel (65) is arranged on one side of the purification tower body (61) and is connected with the circulating water tank (63) through a guide pipe; the spray header (67) is arranged above the filler layer (62); the hollow balls (68) are arranged into 2 layers, and each layer is embedded below the filler layer (62).
4. The exhaust gas absorption device for an oxidation plant according to claim 1, wherein: the UV photolysis lamp (10) is a G10q ozone waste gas treatment UV lamp.
5. The exhaust gas absorption device for an oxidation plant according to claim 3, wherein: the hollow ball (68) is specifically an XG-KXQ type dechlorination and deoxidization high-adsorbability hollow ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681725.XU CN210385270U (en) | 2020-02-21 | 2020-02-21 | Tail gas absorbing device for oxidation workshop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920681725.XU CN210385270U (en) | 2020-02-21 | 2020-02-21 | Tail gas absorbing device for oxidation workshop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210385270U true CN210385270U (en) | 2020-04-24 |
Family
ID=70345036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920681725.XU Expired - Fee Related CN210385270U (en) | 2020-02-21 | 2020-02-21 | Tail gas absorbing device for oxidation workshop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210385270U (en) |
-
2020
- 2020-02-21 CN CN201920681725.XU patent/CN210385270U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of tail gas absorption device for oxidation workshop Effective date of registration: 20220920 Granted publication date: 20200424 Pledgee: Guangde Licheng Financing Guarantee Co.,Ltd. Pledgor: Anhui Delui New Materials Technology Co.,Ltd. Registration number: Y2022980015728 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 |