CN219149631U - Spray washing tower for treating industrial acid-base organic waste gas - Google Patents
Spray washing tower for treating industrial acid-base organic waste gas Download PDFInfo
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- CN219149631U CN219149631U CN202221867039.XU CN202221867039U CN219149631U CN 219149631 U CN219149631 U CN 219149631U CN 202221867039 U CN202221867039 U CN 202221867039U CN 219149631 U CN219149631 U CN 219149631U
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- pipe
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- 239000007921 spray Substances 0.000 title claims abstract description 52
- 239000007789 gas Substances 0.000 title claims abstract description 21
- 239000010815 organic waste Substances 0.000 title claims abstract description 14
- 238000005406 washing Methods 0.000 title abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 239000002912 waste gas Substances 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000007790 scraping Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field related to waste gas treatment equipment, in particular to a spray washing tower for treating industrial acid-base organic waste gas, which comprises a tower body, wherein the top end of the tower body is rotationally connected with a first straight pipe, the top end of the first straight pipe is connected with the bottom rotating end of a rotating joint, the bottom end of the first straight pipe is fixedly connected with a spray pipe rack, and a plurality of liquid outlets which are equidistantly arranged at the bottom end of the spray pipe rack are all fixedly provided with spray heads. The utility model is different from the prior art, utilizes the transmission mechanism, and utilizes the action of a motor and a liquid pump and is matched with a plurality of components, so that the spray pipe rack can drive a plurality of spray heads to spray in a rotating way, the range of spraying the spray liquid on the waste gas is wide, the waste gas and the spray liquid can be fully contacted, the effect of waste gas treatment is greatly improved, and meanwhile, the annular scraping plate can reciprocate in the tower body, and further, harmful particles in the waste gas adhered on the inner wall of the tower body can be scraped, thereby bringing convenience for later cleaning.
Description
Technical Field
The utility model relates to the technical field related to waste gas treatment equipment, in particular to a spray washing tower for treating industrial acid-base organic waste gas.
Background
The washing tower is a novel gas purifying treatment device, is produced by improvement on the basis of a filler layer gas purifier, is widely applied to pretreatment in the aspects of industrial waste gas purification, dust removal and the like, when mixed gas is introduced into the washing tower from the bottom of the washing tower, liquid passes through each layer of tower plates from top to bottom under the action of gravity and is discharged from the bottom of the tower through the spray header, the gas passes through each layer of tower plates from bottom to top under the pushing of air pressure and is discharged from the top of the tower through the tower plates, the spray liquid and the gas flow reversely, and are contacted in a uniform cross flow manner, so that harmful particles in waste gas are trapped in the gas-liquid two-phase contact process, and thus sedimentation is achieved.
At present, the spray washing tower for treating the existing industrial acid-base organic waste gas is fixed in position of a spray head, so that the range of the spray liquid for waste gas is small, the waste gas and the spray liquid cannot be fully contacted, the treatment effect is poor, and harmful particles in the waste gas are easy to adhere to the inner wall of the tower body, so that the later cleaning is inconvenient, and therefore, the spray washing tower for treating the industrial acid-base organic waste gas is provided.
Disclosure of Invention
The utility model aims to provide a spray washing tower for treating industrial acid-base organic waste gas, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the spray washing tower for treating the industrial acid-base organic waste gas comprises a tower body, wherein the top end of the tower body is rotationally connected with a first straight pipe, the top end of the first straight pipe is connected with the bottom rotating end of a rotary joint, a spray pipe rack is fixedly connected to the bottom end of the first straight pipe, spray nozzles are fixed at liquid outlets which are arranged at a plurality of equal intervals at the bottom end of the spray pipe rack, a second straight pipe is fixed at the top end of the rotary joint, the second straight pipe is fixed at the top end of the tower body through an inverted L-shaped plate, and a transmission mechanism is connected between the first straight pipe and the tower body;
the transmission mechanism comprises a gear a fixedly connected to the outer side of a straight pipe, a gear b is connected to the outer side of the gear a in a meshed mode, an installation shaft hole of the gear b is connected with an output shaft of a motor, the motor is fixed to an inverted-L-shaped plate, a belt pulley a fixedly connected to the outer side of the straight pipe is arranged above the gear a, the belt pulley a is connected with a belt pulley b through transmission belt transmission, the belt pulley b is fixedly connected to the outer side of a top extending part of a reciprocating screw rod, the reciprocating screw rod is rotationally connected to the inside of a tower body, a moving block is connected to the outer side of the reciprocating screw rod in a spiral transmission mode, an annular scraping plate is fixedly connected to one end of the moving block, the outer scraping surface of the annular scraping plate is movably attached to the inside of the tower body, a sliding sleeve is further fixed to the inner side of the annular scraping plate, the sliding sleeve is arranged on the outer side of an L-shaped sliding rod, a cleaning mechanism which is convenient to clean impurities on the surface of a filter screen is further connected between the bottom end of the reciprocating screw rod and the tower body, and the filter screen is fixed to the tower body.
Preferably, an air inlet pipe which is convenient for waste gas to enter is arranged on one side wall of the tower body, an exhaust pipe is fixed at an air outlet on one side of the top end of the tower body, a flange connecting piece is arranged at one end of the air inlet pipe, the air inlet pipe can be conveniently connected with an equipment pipeline which is used for conveying waste gas from the outside, and the exhaust pipe can conveniently remove waste gas particles and impurities, so that the waste gas reaching the standard can be discharged.
Preferably, the top of the second straight pipe is connected with a liquid feeding pipe, the bottom of the liquid feeding pipe is connected to the liquid outlet of the liquid pump, the liquid pump is fixed to the outer side of the tower body, the liquid inlet of the liquid pump extends into the tower body through a liquid pumping pipe, the liquid pump can pump spray liquid at the inner bottom of the tower body to the second straight pipe, and the spray liquid can be sprayed out from a plurality of spray heads through the functions of the rotary joint, the first straight pipe and the spray pipe rack, so that the spray operation of waste gas is realized.
Preferably, the cleaning mechanism comprises a gear c fixedly connected to the bottom end of the reciprocating screw. The outer side of the gear c is connected with an inner gear plate in a meshed manner, and the reciprocating screw rod rotates to further enable the gear c to rotate, so that the gear c can drive the inner gear plate.
Preferably, the inner gear ring plate is slidably sleeved on the outer side of the guide ring, the guide ring is fixed on the inner side of the tower body, a guide groove matched with the guide ring is further formed in the outer side of the inner gear ring plate, and the inner gear ring plate and the tower body form a rotating structure through the guide ring, the guide groove and the tower body.
Preferably, the cleaning brush fixed on the inner side of the inner gear ring plate is arranged below the gear c, the bottom brush surface of the cleaning brush is attached to the top of the filter screen, and when the inner gear ring plate rotates, the cleaning brush can be driven to rotate on the surface of the filter screen, so that particle impurities intercepted on the surface of the filter screen can be cleaned.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model is different from the prior art, by utilizing the transmission mechanism, the motor and the liquid pump are started, and the functions of a plurality of components are matched, so that the spray pipe rack can drive a plurality of spray heads to spray in a rotating way, the range of spraying liquid to waste gas is wide, the waste gas and the spray liquid can be fully contacted, the effect of waste gas treatment is greatly improved, meanwhile, the annular scraping plate can reciprocate in the tower body, further, harmful particles in the waste gas adhered on the inner wall of the tower body can be scraped, the later cleaning is convenient, and secondly, the cleaning mechanism can be synchronous with the process, and the functions of a plurality of components are matched, so that the inner gear plate can drive the cleaning brush to clean particle impurities on the surface of the filter screen, and the problems of low filtering efficiency of the spray liquid, untimely use and the like caused by blockage of the filter screen caused by particle impurities are avoided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of each component in the transmission mechanism of the present utility model;
FIG. 3 is a schematic view of a part of the cleaning mechanism of the present utility model in an expanded configuration.
In the figure: 1. a tower body; 2. an air inlet pipe; 3. an exhaust pipe; 4. a straight pipe I; 41. a rotary joint; 42. spraying pipe frames; 43. a spray head; 44. a straight pipe II; 5. a liquid pump; 51. a liquid suction pipe; 52. a liquid feeding pipe; 6. a transmission mechanism; 601. a gear a; 602. a gear b; 603. a motor; 604. a belt pulley a; 605. a transmission belt; 606. a belt pulley b; 607. a reciprocating screw; 608. a moving block; 609. an annular scraping plate; 610. a sliding sleeve; 611. an L-shaped slide bar; 7. a filter screen; 8. a cleaning mechanism; 801. a gear c; 802. an inner ring gear plate; 803. a guide ring; 804. a cleaning brush; 805. a guide groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a technical solution: the spray washing tower for treating the industrial acid-base organic waste gas comprises a tower body 1, wherein a first straight pipe 4 is rotationally connected to the top end of the tower body 1, the top end of the first straight pipe 4 is connected with the bottom rotary end of a rotary joint 41, a spray pipe rack 42 is fixedly connected to the bottom end of the first straight pipe 4, spray nozzles 43 are fixed at a plurality of liquid outlets which are equidistantly arranged at the bottom end of the spray pipe rack 42, a second straight pipe 44 is fixed to the top end of the rotary joint 41, the second straight pipe 44 is fixed to the top end of the tower body 1 through an inverted L-shaped plate, and a transmission mechanism 6 is connected between the first straight pipe 4 and the tower body 1;
the transmission mechanism 6 comprises a gear a601 fixedly connected to the outer side of the straight pipe 4, a gear b602 is connected to the outer side of the gear a601 in a meshed mode, an installation shaft hole of the gear b602 is connected with an output shaft of the motor 603, the motor 603 is fixed to an inverted L-shaped plate, a belt pulley a604 fixedly connected to the outer side of the straight pipe 4 is arranged above the gear a601, the belt pulley a604 is connected with a belt pulley b606 through transmission of a transmission belt 605, the belt pulley b606 is fixedly connected to the outer side of a top end extension portion of a reciprocating screw 607, the reciprocating screw 607 is rotatably connected to the tower 1, a moving block 608 is connected to the outer side of the reciprocating screw 607 in a spiral mode, an annular scraping plate 609 is fixedly connected to one end of the moving block 608, an outer scraping surface of the annular scraping plate 609 is movably attached to the tower 1, a sliding sleeve 610 is further fixed to the inner side of the annular scraping plate 609, the sliding sleeve 610 is sleeved on the outer side of the L-shaped sliding rod 611, the L-shaped sliding rod 611 is fixed to the tower 1, the filter screen 7 is fixed to the tower 1, and the filter screen 7 can filter and be reused for filtering spray liquid after being filtered.
Be equipped with the intake pipe 2 that is convenient for waste gas to get into on the lateral wall of tower body 1, top one side gas outlet department of tower body 1 is fixed with blast pipe 3, the one end of intake pipe 2 is equipped with flange joint spare, can be convenient for carry the equipment piping connection of waste gas with the external world, blast pipe 3 can be convenient for get rid of waste gas particulate impurity's up to standard waste gas and can discharge, the top of straight tube two 44 is connected with the liquid feed pipe 52, the liquid outlet department at liquid pump 5 is connected to the bottom of liquid feed pipe 52, liquid pump 5 is fixed in the outside of tower body 1, liquid feed inlet department of liquid pump 5 extends to in the tower body 1 through drawing liquid pipe 51, liquid pump 5 can be to the spray liquid of tower body 1 inner bottom extract to straight tube two 44, and through rotary joint 41, straight tube one 4, spray pipe rack 42's effect, can be followed a plurality of shower nozzles 43 and spout, realize the operation of spraying to waste gas.
A cleaning mechanism 8 which is convenient for cleaning impurities on the surface of the filter screen 7 is further connected between the bottom end of the reciprocating screw 607 and the tower body 1, and the cleaning mechanism 8 comprises a gear c801 fixedly connected to the bottom end of the reciprocating screw 607. The outside meshing of gear c801 is connected with ring gear plate 802, reciprocating screw 607 rotates, and then make gear c801 rotate, thereby make gear c801 can carry out the transmission to ring gear plate 802, ring gear plate 802 slip cap establishes in the outside of guide ring 803, the guide ring 803 is fixed in tower 1 inboard, ring gear plate 802's outside has still seted up the guide slot 805 with guide ring 803 matched with, ring gear plate 802 passes through guide ring 803, guide slot 805 constitutes rotating architecture with tower 1, the below of gear c801 is equipped with the cleaning brush 804 of fixing in ring gear plate 802 inboard, the bottom brush face of cleaning brush 804 is laminated with the top of filter screen 7, when ring gear plate 802 rotates, can drive its cleaning brush 804 and rotate on the surface of filter screen 7, and then can clear up the granule impurity of filter screen 7 surface interception.
This scheme, when using, let in waste gas from intake pipe 2, and through starter motor 603 and liquid pump 5 thereof, and then drive gear b602 rotates, and the transmission rotates in the straight tube 4 that gear a601 is connected, and then drive a plurality of shower nozzles 43 on spray pipe support 42 and rotate the operation, then range when spraying the liquid to waste gas is wide, make waste gas and spray can fully contact between the liquid, promote waste gas treatment's effect greatly, meanwhile, because belt pulley a604 passes through the drive belt 605 and is connected with belt pulley b606 transmission, then make reciprocating screw 607 rotate, because reciprocating screw 607 is connected with movable block 608 spiral transmission, then make annular scraper 609 can carry out reciprocal elevating motion in tower 1, and then can strike off harmful particles in the waste gas that bonds on tower 1 inner wall, bring convenience when later stage clearance, secondly, reciprocating screw 607 rotates, drive gear c801 and rotate, and drive in inner gear plate 802 and rotate on guide ring 803, and then can drive the particle that cleaning brush 804 was to filter screen 7 surface is clear away, avoid particle impurity to cause to block up, cause the filter screen that the filtration efficiency is not in time waiting for the time to use.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an industry acid-base organic waste gas handles with spray scrubber, includes tower body (1), its characterized in that: the tower body (1) is characterized in that the top end of the tower body (1) is rotationally connected with a first straight pipe (4), the top end of the first straight pipe (4) is connected with the bottom rotating end of a rotating joint (41), a spray pipe rack (42) is fixedly connected to the bottom end of the first straight pipe (4), spray nozzles (43) are fixed at liquid outlets which are formed in multiple equal intervals at the bottom end of the spray pipe rack (42), a second straight pipe (44) is fixed at the top end of the rotating joint (41), the second straight pipe (44) is fixed at the top end of the tower body (1) through an inverted L-shaped plate, a transmission mechanism (6) is connected between the first straight pipe (4) and the tower body (1), an air inlet pipe (2) which is convenient for waste gas to enter is arranged on one side wall of the tower body (1), and an exhaust pipe (3) is fixed at an air outlet at one side of the top end of the tower body (1).
The transmission mechanism (6) comprises a gear a (601) fixedly connected to the outer side of a straight pipe I (4), a gear b (602) is connected to the outer side of the gear a (601) in a meshed manner, an installation shaft hole of the gear b (602) is connected with an output shaft of a motor (603), the motor (603) is fixed on an inverted-L-shaped plate, a belt pulley a (604) fixedly connected to the outer side of the straight pipe I (4) is arranged above the gear a (601), the belt pulley a (604) is connected with a belt pulley b (606) in a transmission manner through a transmission belt (605), the belt pulley b (606) is fixedly connected to the outer side of the top end extension part of a reciprocating screw (607), the reciprocating screw (607) is rotatably connected to the inside of a tower body (1), a moving block (608) is connected to the outer side of the reciprocating screw in a spiral transmission manner, one end of the moving block (608) is fixedly connected with an annular scraping plate (609), the outer side of the annular scraping plate (609) is movably attached to the inside the tower body (1), the inner side of the annular scraping plate (609) is fixedly provided with a sliding sleeve (610), the sliding sleeve (610) is slidably sleeved on the outer side of the L-shaped (611), the L-shaped sliding rod (611) is fixedly arranged in the tower body (1) at the top end extension part of the top end of the reciprocating screw (607) is fixedly arranged on the top end of the reciprocating screw (607) to the tower body (1) and is convenient to clean the bottom end of the reciprocating screw (7), the filter screen (7) is fixed in the tower body (1).
2. The spray scrubber for treating industrial acid-base organic waste gas according to claim 1, wherein: the top of straight tube two (44) is connected with liquid feed pipe (52), and liquid feed pipe (52)'s bottom is connected in the liquid outlet department of liquid pump (5), and the outside at tower body (1) is fixed in liquid pump (5), and liquid feed inlet department of liquid pump (5) extends into in tower body (1) through drawing liquid pipe (51).
3. The spray scrubber for treating industrial acid-base organic waste gas according to claim 1, wherein: the cleaning mechanism (8) comprises a gear c (801) fixedly connected to the bottom end of the reciprocating screw rod (607), and an inner gear plate (802) is connected to the outer side of the gear c (801) in a meshed mode.
4. A spray scrubber for treating industrial acid-base organic waste gas as claimed in claim 3, wherein: the inner gear ring plate (802) is slidably sleeved on the outer side of the guide ring (803), the guide ring (803) is fixed on the inner side of the tower body (1), and a guide groove (805) matched with the guide ring (803) is formed in the outer side of the inner gear ring plate (802).
5. The spray scrubber for treating industrial acid-base organic waste gas as claimed in claim 4, wherein: a cleaning brush (804) fixed on the inner side of the inner gear ring plate (802) is arranged below the gear c (801), and the bottom brush surface of the cleaning brush (804) is attached to the top of the filter screen (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221867039.XU CN219149631U (en) | 2022-07-20 | 2022-07-20 | Spray washing tower for treating industrial acid-base organic waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221867039.XU CN219149631U (en) | 2022-07-20 | 2022-07-20 | Spray washing tower for treating industrial acid-base organic waste gas |
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| Publication Number | Publication Date |
|---|---|
| CN219149631U true CN219149631U (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221867039.XU Active CN219149631U (en) | 2022-07-20 | 2022-07-20 | Spray washing tower for treating industrial acid-base organic waste gas |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116585832A (en) * | 2023-06-14 | 2023-08-15 | 常熟市新明宇新材料科技有限公司 | Equipment and method for recycling waste gas from PE film production |
| CN116899355A (en) * | 2023-08-02 | 2023-10-20 | 吉安创成环保科技有限责任公司 | A halogen spray device and method for removing mercury from flue gas |
| CN117109021A (en) * | 2023-08-31 | 2023-11-24 | 衡阳丰联精细化工有限公司 | A flue gas cooling tower with purification function |
| CN117166942A (en) * | 2023-08-09 | 2023-12-05 | 生态环境部南京环境科学研究所 | A green and portable groundwater monitoring well cleaning device and method |
| CN117379949A (en) * | 2023-12-07 | 2024-01-12 | 广饶齐成新能源有限公司 | Low-pressure gas-separation hydrogen recycling device in diesel hydrogenation process |
| CN120346614A (en) * | 2025-06-24 | 2025-07-22 | 山西晋纲新材料科技有限公司 | Dust treatment device for corundum sand production |
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2022
- 2022-07-20 CN CN202221867039.XU patent/CN219149631U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116585832A (en) * | 2023-06-14 | 2023-08-15 | 常熟市新明宇新材料科技有限公司 | Equipment and method for recycling waste gas from PE film production |
| CN116899355A (en) * | 2023-08-02 | 2023-10-20 | 吉安创成环保科技有限责任公司 | A halogen spray device and method for removing mercury from flue gas |
| CN117166942A (en) * | 2023-08-09 | 2023-12-05 | 生态环境部南京环境科学研究所 | A green and portable groundwater monitoring well cleaning device and method |
| CN117109021A (en) * | 2023-08-31 | 2023-11-24 | 衡阳丰联精细化工有限公司 | A flue gas cooling tower with purification function |
| CN117379949A (en) * | 2023-12-07 | 2024-01-12 | 广饶齐成新能源有限公司 | Low-pressure gas-separation hydrogen recycling device in diesel hydrogenation process |
| CN117379949B (en) * | 2023-12-07 | 2024-02-09 | 广饶齐成新能源有限公司 | Low-pressure gas-separation hydrogen recycling device in diesel hydrogenation process |
| CN120346614A (en) * | 2025-06-24 | 2025-07-22 | 山西晋纲新材料科技有限公司 | Dust treatment device for corundum sand production |
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