CN114288826B - Height difference overflow water supplementing method of multi-stage waste gas spray tower - Google Patents
Height difference overflow water supplementing method of multi-stage waste gas spray tower Download PDFInfo
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- CN114288826B CN114288826B CN202111650408.XA CN202111650408A CN114288826B CN 114288826 B CN114288826 B CN 114288826B CN 202111650408 A CN202111650408 A CN 202111650408A CN 114288826 B CN114288826 B CN 114288826B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 239000007921 spray Substances 0.000 title claims abstract description 61
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 215
- 238000009826 distribution Methods 0.000 claims abstract description 60
- 238000003860 storage Methods 0.000 claims abstract description 59
- 238000012806 monitoring device Methods 0.000 claims abstract description 10
- 239000013589 supplement Substances 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 11
- 230000003020 moisturizing effect Effects 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 238000007667 floating Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009988 textile finishing Methods 0.000 description 1
- 239000003021 water soluble solvent Substances 0.000 description 1
Classifications
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a height difference overflow water supplementing method of a multi-stage waste gas spray tower, which comprises a spray device, at least n liquid distribution devices positioned above the spray device, a water supplementing device for supplementing water to the uppermost liquid distribution device, a liquid level monitoring device for monitoring the liquid level in the spray device and a control device in signal connection with the liquid level monitoring device and the water supplementing device; the method comprises the following steps: the liquid level monitoring device monitors the liquid level in the circulating storage pool in real time and converts the liquid level into a liquid level signal to be sent to the control device, and the control device receives the liquid level signal and compares the liquid level signal with a preset liquid level threshold value in the control device; when the comparison result shows that the received liquid level signal is smaller than the preset liquid level threshold value, the control device sends a water supplementing signal to the water supplementing device; the water supplementing device receives the water supplementing signal and supplements water to the annular storage pool in the uppermost liquid distribution device.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a height difference overflow water supplementing method of a multi-stage waste gas spray tower.
Background
Organic solvents which are easy to be absorbed by water, such as DMF, DMAC, NMP, are often required in the industries of textile finishing, electronic chip, lithium battery manufacturing and the like, and can be discharged together with waste gas after being dried at high temperature. If not treated, would have a very adverse effect on the environment.
Devices for solving such problems have been developed in the prior art, such as spraying the exhaust gas with a recovery spray tower to absorb the water-soluble solvent in the exhaust gas, but the existing recovery tower is replenished with water via a float valve or the electrically controlled level is controlled by a pneumatic valve. The floating ball valve has the problems of water leakage of the floating ball and ageing of the sealing gasket after a long time, so that water supplementing is out of control; the electrical control liquid level usually has the conditions of sensor corrosion, dirt resistance, water leakage of a ball valve, failure of an electromagnetic valve and the like; and the energy consumption of the existing spray tower working process is high.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the invention aims to provide a height difference overflow water supplementing method of a multi-stage waste gas spray tower, which can effectively reduce energy consumption and equipment failure rate.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the multi-stage waste gas spray tower comprises a spray device, at least n liquid distribution devices positioned above the spray device, a water supplementing device for supplementing water to the uppermost liquid distribution device, a liquid level monitoring device for monitoring the liquid level in the spray device and a control device in signal connection with the liquid level monitoring device and the water supplementing device, wherein the spray device comprises a circulation storage tank, a spray assembly and a first water pump for conveying liquid in the circulation storage tank to the spray assembly; the liquid distribution device comprises an annular storage pool, a liquid distribution assembly and a second water pump, wherein the second water pump is used for conveying liquid in the annular storage pool to the liquid distribution assembly;
the height difference overflow water supplementing method comprises the following steps: the liquid level monitoring device monitors the liquid level in the circulating storage pool in real time and converts the liquid level into a liquid level signal to be sent to the control device, and the control device receives the liquid level signal and compares the liquid level signal with a preset liquid level threshold value in the control device;
when the comparison result shows that the received liquid level signal is smaller than the preset liquid level threshold value, the control device sends a water supplementing signal to the water supplementing device; the water supplementing device receives the water supplementing signal and supplements water to the annular storage pool in the uppermost liquid distribution device. Only need carry out moisturizing to the cloth liquid device of top in the time of moisturizing, afterwards constantly overflow downwards, not only can further promote the absorption effect, and can effectively reduce the energy consumption.
The storage pool of traditional shower head sets up at the bottom of the tower, leads to the crowded difficult more than four grades of preparation of storage pool, and the energy consumption is high. The structure of the storage pool is changed, the floating ball water supplementing mode is canceled, and all liquid levels of the whole system can be controlled by detecting the liquid level height of the circulation storage pool at the lowest position.
According to some preferred embodiments of the present invention, the annular reservoir in the uppermost liquid distribution device receives the liquid delivered by the water replenishment device, the liquid level in the annular reservoir continuously rises and overflows, the overflowed liquid continuously flows from the upper liquid distribution device to the lower liquid distribution device, sequentially fills the annular reservoir in the lower liquid distribution device, and finally flows to the circulation reservoir in the lowermost spraying device.
According to some preferred embodiments of the present invention, when the comparison results in the received liquid level signal being greater than the preset liquid level threshold, the control device does not send a water replenishment signal, and the water replenishment device does not act.
According to some preferred embodiments of the invention, n is a natural number greater than or equal to 2.
According to some preferred embodiments of the invention, n is a natural number greater than or equal to 5. Through the water collection and water supplementing structure in the application, n is more than or equal to 5, namely, the total spray tower can reach 6 grades and above.
According to some preferred embodiments of the invention, a packing layer and a liquid trap are provided below the liquid distribution assembly, the liquid trap being provided below the packing layer, the annular reservoir being provided between the periphery of the liquid trap and the spray tower wall.
According to some preferred embodiments of the invention, the top of the annular reservoir in the liquid distribution device is flush with or below the bottom of the corresponding liquid trap. The liquid collector can only enable the gas to pass through from the lower side to the upper side, and prevent the liquid from falling downwards, so that the liquid in the liquid distribution device cannot flow downwards through the liquid collector, and can only overflow and flow downwards through the annular storage pool.
According to some preferred embodiments of the invention, the multi-stage flue gas spray tower comprises a demisting layer located above the topmost liquid distribution device.
According to some preferred embodiments of the present invention, the second water pump is configured to deliver the liquid in the annular reservoir to the corresponding liquid distribution assembly for liquid distribution.
According to some preferred embodiments of the present invention, the spray device of the multi-stage exhaust gas spray tower comprises an air inlet pipe, wherein the air inlet pipe is used for introducing exhaust gas into the spray device, one end of the air inlet pipe is positioned under the spray assembly, and the air inlet is arranged towards the lower side so as to improve the absorption effect. More preferably, the axis of the air inlet corresponds to the axis of the spray assembly.
Compared with the prior art, the invention has the following advantages: according to the height difference overflow water supplementing method of the multistage waste gas spray tower, the corresponding storage pool and the water pump are arranged in each spray device or liquid distribution device, the storage pool can receive liquid left above, the water pump is used for pumping the liquid in the storage pool into the corresponding spray device or liquid distribution device, a traditional bottom large water pool is omitted, self circulation of the liquid is achieved, water supplementing is only needed to be carried out in the uppermost liquid distribution device during water supplementing, and then the water is continuously overflowed downwards, so that the absorption effect can be further improved, and energy consumption and equipment failure rate can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-stage flue gas spray tower in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic illustration of the gas and water paths of the multi-stage flue gas spray tower in operation in accordance with a preferred embodiment of the present invention;
wherein, the reference numerals include: the liquid level detection device comprises a first circulation pool-11, a first sprayer-12, a first circulation water pump-13, a second annular pool-21, a second liquid distributor-22, a second circulation water pump-23, a second packing layer-24, a second liquid collector-25, a third annular pool-31, a third liquid distributor-32, a third circulation water pump-33, a third packing layer-34, a third liquid collector-35, a fourth annular pool-41, a fourth liquid distributor-42, a fourth circulation water pump-43, a fourth packing layer-44, a fourth liquid collector-45, a fifth annular pool-51, a fifth liquid distributor-52, a fifth circulation water pump-53, a fifth packing layer-54, a fifth liquid collector-55, a sixth annular pool-61, a sixth liquid distributor-62, a sixth circulation water pump-63, a sixth packing layer-64, a sixth liquid collector-65, a demisting layer-7, an air inlet pipeline-8 and a liquid level detection device-9.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
Referring to fig. 1-2, the multi-stage exhaust gas spray tower in this embodiment includes a spray device, 5 liquid distribution devices located above the spray device, a demisting layer 7 located above the topmost liquid distribution device, a water supplementing device for supplementing water into the topmost liquid distribution device, a control device for controlling the water supplementing device to act, and a liquid level detection device 9 corresponding to the spray device, where the control device is in signal connection with the liquid level detection device and the water supplementing device.
The spraying device comprises a circulating storage pool, a spraying assembly and a first water pump, wherein the first water pump is used for conveying liquid in the circulating storage pool into the spraying assembly; the liquid distribution device comprises an annular storage pool, a liquid distribution assembly, a second water pump used for conveying liquid in the annular storage pool to the liquid distribution assembly, a packing layer positioned below the liquid distribution assembly and a liquid collector, wherein the liquid collector is arranged below the packing layer, and the annular storage pool is arranged between the periphery of the liquid collector and the wall of the spray tower. The second water pump is used for conveying the liquid in the annular storage pool to the corresponding liquid distribution assembly for liquid distribution.
Only need carry out moisturizing to the cloth liquid device of top in the time of moisturizing, afterwards constantly overflow downwards, not only can further promote the absorption effect, and can effectively reduce the energy consumption. The top of the annular reservoir in the liquid distribution device is flush with or lower than the bottom of the corresponding liquid collector. The liquid collector can only enable the gas to pass through from the lower side to the upper side, and prevent the liquid from falling downwards, so that the liquid in the liquid distribution device cannot flow downwards through the liquid collector, and can only overflow and flow downwards through the annular storage pool.
Specifically, the (first stage) spraying device in this embodiment includes the first circulation tank 11, the first sprayer 12, and the first circulation water pump 13, (the second stage liquid distribution device includes the second annular tank 21, the second liquid distributor 22, the second circulation water pump 23, the second filler layer 24, and the second liquid collector 25, (the third stage liquid distribution device includes the third annular tank 31, the third liquid distributor 32, the third circulation water pump 33, the third filler layer 34, and the third liquid collector 35, (the fourth stage liquid distribution device includes the fourth annular tank 41, the fourth liquid distributor 42, the fourth circulation water pump 43, the fourth filler layer 44, and the fourth liquid collector 45, (the fifth stage liquid distribution device includes the fifth annular tank 51, the fifth liquid distributor 52, the fifth circulation water pump 53, the fifth filler layer 54, and the fifth liquid collector 55), and the sixth stage liquid distribution device includes the sixth annular tank 61, the sixth liquid distributor 62, the sixth circulation water pump 63, the sixth filler layer 64, and the sixth liquid collector 65. The water replenishment device communicates with the topmost sixth annular reservoir 61.
The storage pool of traditional shower head sets up at the bottom of the tower, leads to the crowded difficult more than four grades of preparation of storage pool, and the energy consumption is high. The structure of the storage pool is changed, the floating ball water supplementing mode is canceled, and all liquid levels of the whole system can be controlled by detecting the liquid level height of the circulation storage pool at the lowest position.
The spray device in this embodiment includes intake duct 8, and intake duct 8 is used for letting in exhaust gas in the spray device, and intake duct's one end position is located under the spray assembly, and the air inlet sets up downwards to promote the absorption effect. More preferably, the axis of the air inlet corresponds to the axis of the spray assembly.
Through the water collecting and supplementing structure, the multi-stage waste gas spray tower can realize that the total spray tower can reach 6 stages and above.
The multistage waste gas spray tower of this embodiment all sets up corresponding reservoir and water pump in every spray set or cloth liquid device, and the liquid that the top was left can be received to the reservoir, and the water pump is arranged in the liquid pump in the reservoir to corresponding shower or cloth liquid ware, has cancelled traditional bottom big pond, has realized the self-loopa of liquid. When water is replenished, only water is required to be replenished into the uppermost liquid distribution device, and then the water continuously overflows downwards, so that the absorption effect can be further improved, and the energy consumption and the equipment failure rate can be effectively reduced.
Example 2
The embodiment provides a height difference overflow water supplementing method based on the multi-stage exhaust gas spray tower in the embodiment 1, which specifically comprises the following steps:
1) A multi-stage flue gas spray tower was manufactured or modified in accordance with the structure of example 1.
2) When the spray tower works, the liquid level monitoring device monitors the liquid level in the circulating storage pool in real time and converts the liquid level into a liquid level signal to be sent to the control device.
3) The control device receives the liquid level signal and compares the liquid level signal with a preset liquid level threshold value in the control device.
4) When the result obtained by comparison is that the received liquid level signal is smaller than the preset liquid level threshold value, the control device sends a water supplementing signal to the water supplementing device; the water supplementing device receives the water supplementing signal and supplements water to the annular storage pool in the uppermost liquid distribution device. Only need carry out moisturizing to the cloth liquid device of top in the time of moisturizing, afterwards constantly overflow downwards, not only can further promote the absorption effect, and can effectively reduce the energy consumption.
Or when the comparison result is that the received liquid level signal is larger than the preset liquid level threshold value, the control device does not send a water supplementing signal, and the water supplementing device does not act.
5) The annular storage pool in the uppermost liquid distribution device receives the liquid conveyed by the water supplementing device, the liquid level in the annular storage pool continuously rises and overflows, the overflowed liquid continuously flows from the upper liquid distribution device to the lower liquid distribution device, the overflowed liquid sequentially fills the annular storage pool in the lower liquid distribution device, and finally flows to the circulating storage pool in the lowermost spraying device.
The liquid level of the circulating storage pool in the lowest spraying device continuously rises, and when the comparison result shows that the received liquid level signal is larger than the preset liquid level threshold value, the control device does not send a water supplementing signal, and the water supplementing device does not act.
The multi-stage waste gas spray tower is provided with the annular water storage tanks in the circumferential direction of the liquid collectors of each stage, and the original bottom water tank is omitted. The circulating liquid in the annular storage pool is directly conveyed to the corresponding spraying or liquid distributing device through the water pump corresponding to each stage, and after spraying and liquid distributing, the circulating liquid is uniformly distributed in the filler and freely flows down to be fully contacted and absorbed with rising waste gas. And finally, collecting the circulating liquid through an annular storage pool, overflowing the circulating liquid into the annular storage pool below, and repeating the flow. When the concentration of the liquid in the lowest primary circulation reservoir reaches a set target, the high-concentration aqueous solution is discharged, the liquid level is reduced, and the liquid level sensor detects that the liquid level is lower than the set value, and the water supplementing device is controlled by the control device to open the water supplementing ball valve. Tap water is fed into the annular storage pool of the highest liquid distribution device, liquid overflows after the annular storage pool of the highest layer is fed, automatically flows into the annular storage pool of the next layer, overflows and freely falls into the next layer after the annular storage pool is fed fully, until the annular storage pool of the second stage is fed fully into a circulation, the liquid level of a circulating water pool can rise, and after the liquid level sensor detects that the liquid level height reaches a set value, the pneumatic valve is closed to stop water feeding.
Compared with the prior art, the multistage waste gas spray tower provided by the invention has the advantages that: (1) The traditional floating ball water supplementing mode is canceled, and all liquid levels of the whole system can be controlled by only detecting the level of a circulating liquid level at the lowest part; the structure of the traditional storage pool is changed, and the original storage pool is arranged at the bottom of the tower, so that the storage pool is crowded and is difficult to manufacture to more than four levels; (2) The external circulation storage pool is arranged at the upper part, so that the height difference between the spraying and the storage pool is reduced, the water pump stroke can be saved, and the electricity consumption is reduced; (3) The traditional recovery tower, N circulation just need join in marriage N liquid level sensor and N pneumatic valve, this application only need the liquid level height of one deck circulating fluid can control all liquid levels in the system, only need dispose 1 liquid level detection and 1 pneumatic valve, all need reduce (N-1) times from cost and fault rate.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. The method is characterized in that the multi-stage waste gas spray tower comprises a spray device, at least n liquid distribution devices positioned above the spray device, a water supplementing device for supplementing water to the uppermost liquid distribution device, a liquid level monitoring device for monitoring the liquid level in the spray device and a control device in signal connection with the liquid level monitoring device and the water supplementing device, wherein the spray device comprises a circulating storage pool, a spray assembly and a first water pump for conveying liquid in the circulating storage pool to the spray assembly; the liquid distribution device comprises an annular storage pool, a liquid distribution assembly and a second water pump, wherein the second water pump is used for conveying liquid in the annular storage pool to the liquid distribution assembly;
the height difference overflow water supplementing method comprises the following steps: the liquid level monitoring device monitors the liquid level in the circulating storage pool in real time and converts the liquid level into a liquid level signal to be sent to the control device, and the control device receives the liquid level signal and compares the liquid level signal with a preset liquid level threshold value in the control device;
when the comparison result shows that the received liquid level signal is smaller than the preset liquid level threshold value, the control device sends a water supplementing signal to the water supplementing device; the water supplementing device receives the water supplementing signal and supplements water to an annular storage pool in the uppermost liquid distribution device;
the annular storage pool in the uppermost liquid distribution device receives the liquid conveyed by the water supplementing device, the liquid level in the annular storage pool continuously rises and overflows, the overflowed liquid continuously flows from the upper liquid distribution device to the lower liquid distribution device, the overflowed liquid sequentially fills the annular storage pool in the lower liquid distribution device, and finally flows to the circulating storage pool in the lowermost spraying device; and the second water pump is used for conveying the liquid in the annular storage pool to the corresponding liquid distribution assembly for liquid distribution.
2. The method according to claim 1, wherein the control device does not send a water replenishment signal when the comparison result is that the received liquid level signal is greater than a preset liquid level threshold, and the water replenishment device does not operate.
3. The method of claim 1, wherein n is a natural number greater than or equal to 2.
4. The method of claim 3, wherein n is a natural number greater than or equal to 5.
5. The differential overflow moisturizing method of claim 1, wherein a packing layer and a liquid collector are disposed below the liquid distribution assembly, the liquid collector is disposed below the packing layer, and the annular reservoir is disposed between the periphery of the liquid collector and the spray tower wall.
6. The differential overflow moisturizing method of claim 5, wherein the top of the annular reservoir in the liquid distribution device is flush with or lower than the bottom of the corresponding liquid trap.
7. The method of claim 1, wherein the multi-stage flue gas spray tower comprises a demisting layer above the topmost liquid distribution device.
8. The method for compensating for height difference overflow according to any of claims 1 to 7, wherein the spray device of the multi-stage exhaust gas spray tower comprises an air inlet pipeline, the air inlet pipeline is used for introducing exhaust gas into the spray device, and one end of the air inlet pipeline is positioned under a spray assembly.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650408.XA CN114288826B (en) | 2021-12-30 | 2021-12-30 | Height difference overflow water supplementing method of multi-stage waste gas spray tower |
| CN202410291113.5A CN118122091A (en) | 2021-12-30 | 2021-12-30 | Multistage waste gas spray tower |
| CN202410291112.0A CN118122090A (en) | 2021-12-30 | 2021-12-30 | Water supplementing method of multi-stage waste gas spray tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650408.XA CN114288826B (en) | 2021-12-30 | 2021-12-30 | Height difference overflow water supplementing method of multi-stage waste gas spray tower |
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| CN202410291112.0A Division CN118122090A (en) | 2021-12-30 | 2021-12-30 | Water supplementing method of multi-stage waste gas spray tower |
| CN202410291113.5A Division CN118122091A (en) | 2021-12-30 | 2021-12-30 | Multistage waste gas spray tower |
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| CN114288826A CN114288826A (en) | 2022-04-08 |
| CN114288826B true CN114288826B (en) | 2024-03-19 |
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| CN202410291112.0A Pending CN118122090A (en) | 2021-12-30 | 2021-12-30 | Water supplementing method of multi-stage waste gas spray tower |
| CN202410291113.5A Pending CN118122091A (en) | 2021-12-30 | 2021-12-30 | Multistage waste gas spray tower |
| CN202111650408.XA Active CN114288826B (en) | 2021-12-30 | 2021-12-30 | Height difference overflow water supplementing method of multi-stage waste gas spray tower |
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| CN202410291113.5A Pending CN118122091A (en) | 2021-12-30 | 2021-12-30 | Multistage waste gas spray tower |
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- 2021-12-30 CN CN202410291112.0A patent/CN118122090A/en active Pending
- 2021-12-30 CN CN202410291113.5A patent/CN118122091A/en active Pending
- 2021-12-30 CN CN202111650408.XA patent/CN114288826B/en active Active
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| GB727379A (en) * | 1953-08-19 | 1955-03-30 | Didier Kogag Hinselmann Koksofenbau Gasverwertung Ag | Improvements relating to apparatus for washing gas |
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| CN118122090A (en) | 2024-06-04 |
| CN118122091A (en) | 2024-06-04 |
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