CN110975457A - Storage tank breather valve exhaust gas purification device - Google Patents
Storage tank breather valve exhaust gas purification device Download PDFInfo
- Publication number
- CN110975457A CN110975457A CN201911331209.5A CN201911331209A CN110975457A CN 110975457 A CN110975457 A CN 110975457A CN 201911331209 A CN201911331209 A CN 201911331209A CN 110975457 A CN110975457 A CN 110975457A
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- Prior art keywords
- breather valve
- drawer type
- cylinder body
- type filter
- cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
Abstract
The invention discloses a waste gas purification device for a storage tank breather valve, which comprises a cylinder body and a drawer type filter frame, wherein an opening is formed in the side wall of the cylinder body, the drawer type filter frame is inserted into the cylinder body through the opening, the drawer type filter frame is in push-pull connection with the inner side of the cylinder body, a multistage progressive filter element is arranged in the drawer type filter frame, and the multistage progressive filter element is arranged along the height direction of the cylinder body; one end of the elbow is communicated with the bottom of the cylinder, the other end of the elbow is connected with one outlet of the three-way ball valve, and the inlet of the three-way ball valve is connected with the air outlet of the breather valve through a flange. The invention can effectively absorb the toxic and harmful molecules contained in the harmful gas discharged by the breather valve, has strong adsorption capacity and good purification effect, can quickly capture the toxic and harmful molecules in the waste gas, has high purification degree, reduces the resistance to less than 200Pa, plays a role in purification while ensuring the performance of the breather valve, and achieves the aim of environmental protection.
Description
Technical Field
The invention relates to the field of air purification devices, in particular to a storage tank breather valve waste gas purification device.
Background
The breather valve is a valve which can ensure that the storage tank space is isolated from the atmosphere within a certain pressure range and can be communicated with the atmosphere (breathe) when the pressure exceeds or is lower than the pressure range. The function of the device is to prevent the storage tank from being damaged due to overpressure or vacuum, and simultaneously, the evaporation loss of the stored liquid can be reduced. When the pressure in the tank reaches the rated positive exhalation pressure, the pressure valve flap is opened, and the steam in the tank is discharged; when the vacuum degree in the tank reaches the rated suction negative pressure, the vacuum valve clack is opened, and air enters.
In the petrochemical industry, storage tanks such as oil storage tanks, various chemical raw material tanks, chemical raw material semi-finished product tanks and chemical product storage tanks need to be used, the storage tanks are generally provided with breather valves, in the process of storing various raw materials, more steam can be discharged into the atmosphere through the breather valves, the steam inevitably contains a large amount of oil gas or volatile gas, the harmful gas discharged through the breather valves is not treated and controlled by effective measures, and the gas is directly discharged into the atmosphere without any treatment and is bound to cause serious atmospheric pollution.
Therefore, it is necessary to perform a certain purification treatment on the gas discharged from the breather valve to reduce the pollution to the atmosphere.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an exhaust gas purification device for a storage tank breather valve.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a storage tank breather valve exhaust gas purification device comprising: the purifying device comprises a purifying device body, the purifying device body comprises a cylinder body and a drawer type filter frame, the top of the cylinder body is in an opening shape, a rain-proof cap is arranged above the cylinder body, a semicircular opening is formed in the side wall of the cylinder body, the drawer type filter frame is inserted into the cylinder body through the opening, a bracket for supporting the drawer type filter frame is arranged at the bottom of the cylinder body, the drawer type filter frame is connected with the cylinder body in a push-pull mode,
the drawer type filter frame comprises at least three filter frame units arranged along the height direction, each filter frame unit comprises a circular frame with a bottom, vent holes are uniformly formed in the bottom wall of the circular frame, a multi-stage progressive filter element is arranged in the circular frame, and a net cover is arranged above the circular frame;
the center of the bottom of the cylinder is connected with an elbow, the elbow is connected with an outlet of the three-way ball valve through a flange, and an inlet of the three-way ball valve is connected with an air outlet of the breather valve through a flange.
Furthermore, a handle for pushing and pulling the circular frame is welded on the side wall of the circular frame, an upper baffle is arranged at the upper end of the circular frame, a lower baffle is also arranged at the lower end of the circular frame at the lowest end, the upper baffle or the lower baffle is fixedly connected with the side wall of the circular frame, the outer diameter of the upper baffle or the lower baffle is in a rectangular structure,
the drawer type filter frame is characterized in that the left side and the right side of the drawer type filter frame are respectively provided with a side baffle, the side baffles are respectively positioned on the left side and the right side of the upper baffle or the lower baffle, the upper baffle, the lower baffle and the two side baffles form a square frame structure, the upper baffle, the lower baffle and the two side baffles are buckled together through a rectangular flange ring, a series of through holes are uniformly formed in the edge of the rectangular flange ring, a front baffle is arranged in front of the drawer type filter frame, a series of through holes are also formed in the edge of the front baffle, the through holes correspond to the screw holes formed in the upper baffle or the lower baffle one by one, and fastening bolts are arranged in the through holes and the screw holes.
Further, the barrel includes shell and bobbin base, the bobbin base is the arc structure, the bobbin base with the junction of shell is equipped with the bracket.
Further, the circular frame is a circular structure matched with the inner wall of the barrel, and the outer diameter of the circular frame is not larger than the inner diameter of the barrel.
Further, the bracket comprises a metal ring welded on the inner wall of the cylinder body along the circumferential direction, a circle of groove is formed in the metal ring, and a rubber sealing ring is arranged in the groove.
Furthermore, the multistage progressive filter element comprises activated carbon particles with different diameters, and the diameters of the activated carbon particles in the multistage progressive filter element gradually become smaller along the direction from bottom to top.
Further, the rain hat is conical or arc-shaped, the diameter of the bottom surface of the rain hat is larger than the outer diameter of the barrel, and the bottom of the inner side surface of the rain hat is fixedly connected with the top of the barrel through a supporting rod.
Further, still include adjustable landing leg, the bottom of adjustable landing leg is equipped with the supporting seat, adjustable landing leg is equipped with a plurality of connecting holes along length direction, the interval between the connecting hole equals, the welding of bottom one side of barrel has a fixed block, be equipped with two locating holes on the fixed block, interval and arbitrary two between two locating holes interval between the connecting hole equals, two locating hole and arbitrary two accessible locking bolt is fixed between the connecting hole.
The invention has the beneficial effects that:
1. the waste gas purification device for the storage tank breather valve is arranged at the outlet of the breather valve on the storage tank, when harmful gas exhausted by the breather valve enters the device, the harmful gas passes through a drawer type filter frame which is provided with active carbon in the device, and is subjected to inertial collision under the action of a multistage progressive filter element, the active carbon with larger particles is firstly used for adsorption, and then the active carbon with smaller particles is used for adsorption, so that micro-mist particles are collected under the action of a filtering mechanism, and the waste gas generates condensation adsorption in the process of passing through the purification device, so that the cleanliness of the gas exhausted by the breather valve is effectively improved, and the environmental pollution is avoided.
2. According to the storage tank breather valve waste gas purification device disclosed by the invention, the activated carbon is adopted for physical purification, toxic and harmful molecules contained in harmful gas discharged by the breather valve can be effectively absorbed, the adsorption capacity is strong, the purification effect is good, the toxic and harmful molecules in the waste gas can be rapidly captured, the purification degree is high, the resistance is reduced to be less than 200Pa, the purification effect is realized while the performance of the breather valve is ensured, and the purpose of environmental protection is achieved.
3. According to the waste gas purification device for the storage tank breather valve, the drawer type filter frame is inserted into the cylinder through the opening, and the drawer type filter frame is in push-pull connection with the inner side of the cylinder, so that the multi-stage progressive filter element in the drawer type filter frame can be conveniently replaced in time, and the purification efficiency is ensured. Set up the change over switch that the tee bend ball valve can switch the tee bend ball valve when changing the filter core between barrel and the breather valve, close being connected between breather valve and the barrel, make the breather valve pass through another export and the atmosphere of tee bend ball valve and be connected, avoid causing direct harm to maintainer.
4. According to the waste gas purification device for the storage tank breather valve, the drawer type filter frame is internally provided with the multistage progressive filter element, the multistage progressive filter element comprises a plurality of circular frames arranged in the drawer type filter frame, the circular frames are arranged in the drawer type filter frame from bottom to top, activated carbon is stored in the circular frames, and the particle diameter of the activated carbon stored in the circular frames is gradually reduced along the direction from bottom to top. Can improve the adsorption effect on toxic and harmful substances in the waste gas, increase the absorption of the active carbon on the toxic and harmful substances and improve the purification effect.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of an embodiment of the present invention;
FIG. 3 is an exploded view of the components of an embodiment of the present invention;
FIG. 4 is a schematic structural view of a drawer-type filter frame according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a bracket according to an embodiment of the present invention.
In the figure: 1-barrel body, 2-rain hat, 3-support rod, 4-barrel shell, 5-barrel bottom, 6-opening, 7-drawer type filter frame, 8-bracket, 9-metal ring, 10-groove, 11-rubber sealing ring, 12-round frame, 13-vent hole, 14-net cover, 15-handle, 16-upper baffle, 17-lower baffle, 18-side baffle, 19-rectangular flange ring, 20-front file, 21-elbow, 22-three-way ball valve, 23-adjustable support leg, 24-support seat, 25-connecting hole, 26-fixing block and 27-positioning hole.
Detailed Description
The present invention is further described in conjunction with the appended drawings so that the advantages and features of the present invention may be more readily understood by those skilled in the art and the scope of the invention will be more clearly defined.
As shown in figures 1-5 of the drawings,
the utility model provides a storage tank breather valve exhaust gas purification device, includes barrel 1, and the top of barrel 1 is the opening form, and rain-proof cap 2 is installed to the top of barrel 1, and rain-proof cap 2 is conical or convex, and the bottom surface diameter of rain-proof cap 2 is greater than the external diameter of barrel 1, and the top fixed connection of bracing piece 3 and barrel 1 is passed through to the medial surface bottom of rain-proof cap 2.
The barrel 1 comprises a barrel shell 4 and a barrel bottom 5, the barrel bottom 5 is of an arc-shaped structure, a semicircular opening 6 is formed in the side wall of the barrel shell 4, a drawer type filter frame 7 is inserted into the barrel 1 through the opening 6, a bracket 8 used for supporting the drawer type filter frame 7 is arranged at the joint of the barrel bottom 5 and the barrel shell 4, the drawer type filter frame 7 is connected with the barrel 1 in a push-pull mode, the bracket 8 comprises a metal ring 9 welded on the inner wall of the barrel 1 along the circumferential direction, a circle of groove 10 is formed in the metal ring 9, and a rubber sealing ring 11 is arranged in the groove 10.
The drawer-type filter frame 7 includes at least three filter frame units arranged along the height direction, the present embodiment is four filter frame units, each filter frame unit includes a circular frame 12 with a bottom, the circular frame 12 is a circular structure matched with the inner wall of the cylinder 1, and the outer diameter of the circular frame 12 is not larger than the inner diameter of the cylinder 1. The bottom wall of the circular frame 12 is uniformly provided with vent holes 13, a multistage progressive filter element is arranged in the circular frame 12, and a net cover 14 is arranged above the circular frame 12. The multistage progressive filter element comprises activated carbon particles with different diameters, and the diameters of the activated carbon particles in the multistage progressive filter element gradually become smaller along the direction from bottom to top.
The welding has the handle 15 that is used for push-and-pull circular frame 12 on the lateral wall of circular frame 12, and the upper end of circular frame 12 is equipped with overhead gage 16, and the lower extreme that is located the circular frame 12 of least significant end still is equipped with down baffle 17, overhead gage 16 or baffle 17 down all with the lateral wall fixed connection of circular frame 12, the external diameter of overhead gage 16 or baffle 17 down becomes the rectangle structure.
The left side and the right side of the drawer type filter frame 7 are respectively provided with a side baffle 18, the side baffles 18 are respectively positioned on the left side and the right side of the upper baffle 16 or the lower baffle 17, the upper baffle 16, the lower baffle 17 and the two side baffles 18 form a square frame structure, the upper baffle 16, the lower baffle 17 and the two side baffles 18 are buckled together through a rectangular flange ring 19, the edge of the rectangular flange ring 19 is uniformly provided with a series of through holes, the front baffle 20 is arranged in front of the drawer type filter frame 7, the edge of the front baffle 20 is also provided with a series of through holes, the through holes are in one-to-one correspondence with screw holes arranged on the upper baffle 16 or the lower baffle 17, and fastening bolts are arranged in the through holes and the screw.
The two sides and the front side of the drawer type filter frame 7 are sealed through the upper baffle 16, the lower baffle 17, the side baffles 18 and the front baffle 20 on the two sides, so that the waste gas is prevented from leaking from the two sides and the front side of the drawer type filter frame 7, and the waste gas can be ensured to be sequentially filtered from the bottom of the barrel body 1 from bottom to top through the multistage progressive filter element.
The center of the bottom of the cylinder bottom 5 is connected with an elbow 21, the elbow 21 is connected with an outlet of a three-way ball valve 22 through a flange, and an inlet of the three-way ball valve 22 is connected with an air outlet of a breather valve through a flange.
The bottom of barrel 1 still is equipped with adjustable landing leg 23, the bottom of adjustable landing leg is equipped with supporting seat 24, adjustable landing leg 23 is equipped with a plurality of connecting holes 25 along length direction, the interval between connecting hole 25 is equal, the welding of bottom one side of barrel 1 has a fixed block 26, be equipped with two locating holes 27 on the fixed block 26, the interval between two locating holes 27 is equal with the interval between two arbitrary connecting holes 25, accessible locking bolt fixes between two locating holes 27 and two arbitrary connecting holes 25.
The invention is installed at the outlet of the breather valve on the storage tank, after the harmful gas discharged by the breather valve enters the device, the harmful gas passes through the drawer type filter frame 7 which is provided with active carbon in the device, and under the action of the multistage progressive filter element, the harmful gas is subjected to inertial collision, the active carbon with larger particles is firstly adsorbed, and then the active carbon with smaller particles is adsorbed, under the action of the filtering mechanism, the tiny fog-like particles are trapped, and the waste gas generates condensation adsorption in the process of passing through the purification device, so that the cleanliness of the gas discharged by the breather valve is effectively improved, and the environmental pollution is avoided. Adopt the active carbon to carry out the physics and purify, can carry out the effective absorption with the poisonous and harmful molecule that contains in the harmful gas of breather valve exhaust, the adsorption efficiency is strong, and purifying effect is good, can catch the poisonous and harmful molecule in the waste gas fast, and purification degree is high, and the resistance falls and is less than below 200Pa, plays the purifying action when guaranteeing the performance of breather valve, reaches the purpose of environmental protection.
The drawer-type filter frame 7 is inserted into the barrel 1 through the opening 6, the drawer-type filter frame 7 is in push-pull connection with the inner side of the barrel 1, a multistage progressive filter element in the drawer-type filter frame 7 can be conveniently replaced in time, and the purification efficiency is ensured. Set up three-way ball valve 22 between barrel 1 and the breather valve and can switch over three-way ball valve 22's change over switch when changing the filter core, close the breather valve and be connected between the barrel 1, make the breather valve pass through another export and the atmosphere of three-way ball valve 22 and be connected, avoid causing direct harm to the maintainer.
Adopt multistage progressive filter core in the drawer type filter frame 7, multistage progressive filter core is including setting up a plurality of circular frames 12 in drawer type filter frame 7, and circular frame 12 sets up in drawer type filter frame 7 from bottom to top, all stores the active carbon in every circular frame 12, and the particle diameter of the active carbon of storing in the circular frame 12 of direction from bottom to top diminishes gradually. Can improve the adsorption effect on toxic and harmful substances in the waste gas, increase the absorption of the active carbon on the toxic and harmful substances and improve the purification effect.
The invention purifies the harmful gas discharged by the breather valve, the purification degree is up to more than 95%, and the resistance is less than 200MPa and can be ignored, so the device not only ensures the performance of the breather valve, but also purifies the air, and plays a role in environmental protection. The device is suitable for the class A with the flash point lower than 28 ℃, oil products, oxyhydrogen liquefaction class, kerosene, diesel oil, toluene, crude oil and the like with the flash point lower than 60 ℃, can be matched with a flame arrester, a breather valve and the like for use, and can be independently used on an internal floating roof oil tank breather pipe and an underground oil tank breather pipe of a gas station.
This device is for guaranteeing purification performance and safety, regularly inspects the maintenance to drawer type filter frame, if change after the absorption saturation, through switching to the side discharge opening with the tee bend ball valve during the change, avoids breather valve exhaust medium to cause the injury to maintainer, opens purifier's drawer type filter frame again, changes the back to the active carbon in the purifier, with in pushing the cylinder with the drawer type filter frame, switch the tee bend ball valve to original position can.
The above description is only exemplary of the present invention, and not intended to limit the present invention, and any modifications, equivalents, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Other technical features than those described in the specification are known to those skilled in the art, and are not described in detail herein in order to highlight the novel features of the present invention.
Claims (8)
1. The utility model provides a storage tank breather valve exhaust gas purification device which characterized in that includes: the purifying device comprises a purifying device body, the purifying device body comprises a cylinder body and a drawer type filter frame, the top of the cylinder body is in an opening shape, a rain-proof cap is arranged above the cylinder body, a semicircular opening is formed in the side wall of the cylinder body, the drawer type filter frame is inserted into the cylinder body through the opening, a bracket for supporting the drawer type filter frame is arranged at the bottom of the cylinder body, the drawer type filter frame is connected with the cylinder body in a push-pull mode,
the drawer type filter frame comprises at least three filter frame units arranged along the height direction, each filter frame unit comprises a circular frame with a bottom, vent holes are uniformly formed in the bottom wall of the circular frame, a multi-stage progressive filter element is arranged in the circular frame, and a net cover is arranged above the circular frame;
the center of the bottom of the cylinder is connected with an elbow, the elbow is connected with an outlet of the three-way ball valve through a flange, and an inlet of the three-way ball valve is connected with an air outlet of the breather valve through a flange.
2. The waste gas purification device for the storage tank breather valve according to claim 1, wherein a handle for pushing and pulling the circular frame is welded on the side wall of the circular frame, an upper baffle plate is arranged at the upper end of the circular frame, a lower baffle plate is further arranged at the lower end of the circular frame at the lowest end, the upper baffle plate or the lower baffle plate is fixedly connected with the side wall of the circular frame, and the outer diameter of the upper baffle plate or the lower baffle plate is in a rectangular structure,
the drawer type filter frame is characterized in that the left side and the right side of the drawer type filter frame are respectively provided with a side baffle, the side baffles are respectively positioned on the left side and the right side of the upper baffle or the lower baffle, the upper baffle, the lower baffle and the two side baffles form a square frame structure, the upper baffle, the lower baffle and the two side baffles are buckled together through a rectangular flange ring, a series of through holes are uniformly formed in the edge of the rectangular flange ring, a front baffle is arranged in front of the drawer type filter frame, a series of through holes are also formed in the edge of the front baffle, the through holes correspond to the screw holes formed in the upper baffle or the lower baffle one by one, and fastening bolts are arranged in the through holes and the screw holes.
3. The waste gas purification device for the storage tank breather valve according to claim 1, wherein the cylinder body comprises a cylinder shell and a cylinder bottom, the cylinder bottom is of an arc-shaped structure, and the bracket is arranged at the joint of the cylinder bottom and the cylinder shell.
4. The exhaust gas purification device for the breather valve of the storage tank as recited in claim 1, wherein the circular frame is a circular structure matched with the inner wall of the cylinder, and the outer diameter of the circular frame is not larger than the inner diameter of the cylinder.
5. The exhaust gas purification device for the storage tank breather valve according to claim 1, wherein the bracket comprises a metal ring welded on the inner wall of the cylinder body along the circumferential direction, a circle of groove is formed in the metal ring, and a rubber sealing ring is arranged in the groove.
6. The exhaust gas purification device for the storage tank breather valve according to claim 1, wherein the multistage progressive filter element comprises activated carbon particles with different diameters, and the diameters of the activated carbon particles in the multistage progressive filter element are gradually reduced along a bottom-up direction.
7. The waste gas purification device for the storage tank breather valve according to claim 1, wherein the rain hat is conical or arc-shaped, the diameter of the bottom surface of the rain hat is larger than the outer diameter of the cylinder, and the bottom of the inner side surface of the rain hat is fixedly connected with the top of the cylinder through a support rod.
8. The waste gas purification device for the storage tank breather valve according to claim 1, further comprising an adjustable support leg, wherein a support seat is arranged at the bottom of the adjustable support leg, a plurality of connecting holes are formed in the adjustable support leg along the length direction, the intervals between the connecting holes are equal, a fixed block is welded on one side of the bottom of the cylinder body, two positioning holes are formed in the fixed block, the interval between the two positioning holes is equal to the interval between any two connecting holes, and the two positioning holes and any two connecting holes can be fixed through locking bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911331209.5A CN110975457A (en) | 2019-12-21 | 2019-12-21 | Storage tank breather valve exhaust gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911331209.5A CN110975457A (en) | 2019-12-21 | 2019-12-21 | Storage tank breather valve exhaust gas purification device |
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| Publication Number | Publication Date |
|---|---|
| CN110975457A true CN110975457A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911331209.5A Pending CN110975457A (en) | 2019-12-21 | 2019-12-21 | Storage tank breather valve exhaust gas purification device |
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| CN (1) | CN110975457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471138A (en) * | 2021-12-27 | 2022-05-13 | 康瑞达（福州）环保科技有限公司 | TVOC remover and detection and removal matching device thereof |
-
2019
- 2019-12-21 CN CN201911331209.5A patent/CN110975457A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471138A (en) * | 2021-12-27 | 2022-05-13 | 康瑞达（福州）环保科技有限公司 | TVOC remover and detection and removal matching device thereof |
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