CN219879561U - Ozone catalytic oxidation pond tail gas treatment system - Google Patents
Ozone catalytic oxidation pond tail gas treatment system Download PDFInfo
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- CN219879561U CN219879561U CN202321371321.3U CN202321371321U CN219879561U CN 219879561 U CN219879561 U CN 219879561U CN 202321371321 U CN202321371321 U CN 202321371321U CN 219879561 U CN219879561 U CN 219879561U
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- Prior art keywords
- ozone
- catalytic oxidation
- inlet
- tail gas
- outlet
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 151
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 48
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 48
- 230000003647 oxidation Effects 0.000 title claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 238000000926 separation method Methods 0.000 claims abstract description 40
- 239000003054 catalyst Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010298 pulverizing process Methods 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract description 2
- 238000005949 ozonolysis reaction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 27
- 239000010842 industrial wastewater Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses an ozone catalytic oxidation pond tail gas treatment system, which comprises an ozone catalytic oxidation pond, wherein an air inlet of the ozone catalytic oxidation pond is connected with an ozone inlet pipe, an air outlet of the ozone catalytic oxidation pond is connected with an air inlet of a gas-liquid separation tank through a pipeline, an air outlet of the gas-liquid separation tank is connected with an air inlet of an ozone decomposition catalyst, an air outlet of the ozone decomposition catalyst is connected with an inlet of a fan, and an outlet of the fan is connected with an emptying pipe; the exhaust pipe is also connected with the ozone inlet pipe through an ozone return pipe, an ozone inlet valve is arranged at the inlet of the ozone inlet pipe, a tail gas exhaust valve is arranged at the outlet of the exhaust pipe, and an ozone return valve is arranged at the ozone return pipe; an ozone content detector is arranged at the outlet of the fan. The system realizes the automatic control of the ozone tail gas treatment, effectively removes water mist in the tail gas, and ensures the service life of the catalyst and the removal effect of ozone; can avoid liquid from entering the ozonolysis catalyst and avoid the pulverization failure of the catalyst.
Description
Technical field:
the utility model relates to the field of industrial wastewater treatment, in particular to an ozone catalytic oxidation pond tail gas treatment system.
The background technology is as follows:
the ozone catalytic oxidation process is widely applied to industrial wastewater treatment due to the advantages of strong oxidizing property, high sterilization efficiency, environmental protection and the like of ozone. When the ozone catalytic oxidation technology is adopted to treat industrial wastewater, ozone is generally excessively added for ensuring the treatment effect, the retention time is limited, the ozone cannot completely react in the catalytic oxidation reaction process, and the tail gas inevitably contains a small amount of ozone; if the exhaust gas is directly discharged, the ozone content of the surrounding air can exceed the allowable ozone concentration limit value of 160 mug/m of the industrial area specified in the environmental air quality standard (GB 3095-2012) 3 Therefore, the ozone tail gas discharged by the ozone catalytic oxidation process can be discharged after being treated by the ozone decomposition catalyst and reaching the national emission standard.
Ozone is injected into a sealed ozone catalytic oxidation pond from the bottom, so that the tail gas of the ozone catalytic oxidation pond contains a large amount of water, the water is separated by a gas-liquid separation tank and then is sent into an oxygen decomposition catalyst, a drain valve at the bottom of the gas-liquid separation tank is a manual valve, manual operation on site is needed by personnel, the gas-liquid separation tank is extremely easy to drain water in time and in place, the air inlet humidity of the ozone decomposition catalyst is high or water is directly fed, if the catalyst is in contact with liquid water or is wetted, the catalyst is extremely easy to pulverize, the ozone damage effect is greatly reduced, even the ozone is invalid in serious cases, the ozone treatment is influenced, and the emission is not up to standard; and the catalyst powder enters the fan along with the tail gas and is attached to the inner wall of the fan or the impeller, so that the fan is damaged.
The utility model comprises the following steps:
the utility model aims to provide an ozone catalytic oxidation pond tail gas treatment system.
The utility model is implemented by the following technical scheme:
the exhaust treatment system of the ozone catalytic oxidation pond comprises an ozone catalytic oxidation pond, wherein an air inlet of the ozone catalytic oxidation pond is connected with an ozone inlet pipe, an air outlet of the ozone catalytic oxidation pond is connected with an air inlet of a gas-liquid separation tank through a pipeline, an air outlet of the gas-liquid separation tank is connected with an air inlet of an ozone decomposition catalyst, an air outlet of the ozone decomposition catalyst is connected with an inlet of a fan, and an outlet of the fan is connected with an emptying pipe; the exhaust pipe is also connected with the ozone inlet pipe through an ozone return pipe, an ozone inlet valve is arranged at the inlet of the ozone inlet pipe, a tail gas exhaust valve is arranged at the outlet of the exhaust pipe, and an ozone return valve is arranged at the ozone return pipe; the outlet of the fan is provided with an ozone content detector, the signal output end of the ozone content detector is electrically connected with the signal input end of the controller, and the signal output end of the controller is electrically connected with the signal input ends of the ozone inlet valve, the tail gas exhaust valve and the ozone return valve.
Preferably, the liquid outlet of the gas-liquid separation tank is connected with the water inlet of the ozone catalytic oxidation tank, a liquid level meter is arranged on the gas-liquid separation tank, a separation tank liquid discharge valve is arranged on the liquid outlet of the gas-liquid separation tank, a signal output end of the liquid level meter is electrically connected with a signal input end of the controller, and a signal input end of the separation tank liquid discharge valve is electrically connected with a signal output end of the controller.
Preferably, the liquid outlet of the ozone decomposition catalyst is connected with the water inlet of the ozone catalytic oxidation pond, and an automatic liquid outlet valve is arranged at the liquid outlet of the ozone decomposition catalyst.
Preferably, a spray header from top to bottom is arranged on a pipeline between the ozone catalytic oxidation tank and the gas-liquid separation tank, and the spray header is connected with a spray water pipeline.
Preferably, a demister is arranged on a pipeline between the ozone catalytic oxidation tank and the gas-liquid separation tank, and the demister is positioned above the spray header.
The utility model has the advantages that:
the system realizes the automatic control of the ozone tail gas treatment, effectively removes water mist in the tail gas, and ensures the service life of the catalyst and the removal effect of ozone; meanwhile, liquid can be prevented from entering the ozonolysis catalyst, and catalyst pulverization failure is avoided; the ozone removal rate of the system can reach more than 99.5%, and the concentration of the outlet ozone is about 0ppm.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of a control circuit of the present utility model.
In the figure: the ozone catalytic oxidation pond 1, ozone inlet pipe 2, gas-liquid separation tank 3, ozone decomposition catalyst 4, fan 5, evacuation pipe 6, ozone return pipe 7, ozone admission valve 8, tail gas evacuation valve 9, ozone return valve 10, ozone content detector 11, controller 12, liquid level gauge 13, separation tank drain valve 14, automatic drain valve 15, shower head 16, shower water pipe 17, defroster 18.
The specific embodiment is as follows:
as shown in fig. 1 and 2, an ozone catalytic oxidation pond tail gas treatment system comprises an ozone catalytic oxidation pond 1, wherein an air inlet of the ozone catalytic oxidation pond 1 is connected with an ozone inlet pipe 2, an air outlet of the ozone catalytic oxidation pond 1 is connected with an air inlet of a gas-liquid separation tank 3 through a pipeline, an air outlet of the gas-liquid separation tank 3 is connected with an air inlet of an ozone decomposition catalyst 4, an air outlet of the ozone decomposition catalyst 4 is connected with an inlet of a fan 5, and an outlet of the fan 5 is connected with an emptying pipe 6; the exhaust pipe 6 is also connected with the ozone inlet pipe 2 through an ozone return pipe 7, an ozone inlet valve 8 is arranged at the inlet of the ozone inlet pipe 2, a tail gas exhaust valve 9 is arranged at the outlet of the exhaust pipe 6, and an ozone return valve 10 is arranged at the ozone return pipe 7; an ozone content detector 11 is arranged at the outlet of the fan 5, the signal output end of the ozone content detector 11 is electrically connected with the signal input end of a controller 12, and the signal output end of the controller 12 is electrically connected with the signal input ends of an ozone inlet valve 8, an exhaust gas evacuation valve 9 and an ozone return valve 10;
when the system is in normal operation, the ozone inlet valve 8 and the tail gas exhaust valve 9 are in an open state, the ozone return valve 10 is in a closed state, ozone is injected into the ozone catalytic oxidation pond 1 from the ozone inlet pipe 2, industrial wastewater is treated in the ozone catalytic oxidation pond 1, unreacted ozone and reacted gas are sent into the gas-liquid separation tank 3 together because the ozone catalytic oxidation pond 1 is in a closed arrangement, water in the gas is separated, the separated gas is sent into the ozone decomposition catalyst 4 to destroy the ozone into oxygen, and finally the oxygen is pressurized by the fan 5 and then is exhausted through the exhaust pipe 6;
the ozone content detector 11 is used for detecting the ozone content of the tail gas discharged by the fan 5 and sending a signal to the controller 12, when the ozone content detector 11 detects that the ozone content is higher than or equal to 160 mug/m 3 The controller 12 controls the ozone inlet valve 8 and the tail gas exhaust valve 9 to be closed, the ozone return valve 10 is opened, the fan 5 returns unqualified tail gas to the ozone catalytic oxidation pool 1 for continuous reaction, ozone in the system is fully utilized, and the ozone is continuously decomposed through the ozone decomposition catalyst 4 until the ozone content detector 11 detects that the ozone content is lower than 160 mu g/m 3 The controller 12 controls the ozone inlet valve 8 and the exhaust gas evacuation valve 9 to be opened, the ozone return valve 10 to be closed, and the system returns to a normal operation state.
The liquid outlet of the gas-liquid separation tank 3 is connected with the water inlet of the ozone catalytic oxidation pond 1, a liquid level meter 13 is arranged on the gas-liquid separation tank 3, a separation tank liquid discharge valve 14 is arranged on the liquid outlet of the gas-liquid separation tank 3, the signal output end of the liquid level meter 13 is electrically connected with the signal input end of the controller 12, and the signal input end of the separation tank liquid discharge valve 14 is electrically connected with the signal output end of the controller 12;
the liquid level meter 13 is used for detecting the water level in the gas-liquid separation tank 3 and sending a signal to the controller 12, when the water level in the gas-liquid separation tank 3 reaches 30%, the controller 12 controls the separation tank drain valve 14 to open, and when the water level in the gas-liquid separation tank 3 reaches 10%, the controller 12 controls the separation tank drain valve 14 to close, so that automatic drain is realized, and a large amount of water is prevented from entering the ozone decomposition catalyst 4 to cause catalyst pulverization.
The liquid outlet of the ozone decomposition catalyst 4 is connected with the water inlet of the ozone catalytic oxidation tank 1, and an automatic liquid outlet valve 15 is arranged at the liquid outlet of the ozone decomposition catalyst 4; the pressure detection is carried on the water inlet of the automatic liquid discharge valve 15, after the water in the ozone decomposition catalyst 4 reaches a certain amount, the pressure reaches a certain value, the automatic liquid discharge valve 15 is opened, and the ozone decomposition catalyst 4 starts to discharge water.
A spray header 16 from top to bottom is arranged on a pipeline between the ozone catalytic oxidation tank 1 and the gas-liquid separation tank 3, and the spray header 16 is connected with a spray water pipeline 17;
the spray water pipeline 17 sprays spray water from the spray header 16, so that foams entering along with tail gas in the ozone catalytic oxidation tank 1 are flushed away, and a large amount of foams are prevented from entering the ozone decomposition catalyst 4 to cause the catalyst to be wetted;
a demister 18 is arranged on a pipeline between the ozone catalytic oxidation tank 1 and the gas-liquid separation tank 3, and the demister 18 is positioned above the spray header 16; the demister 18 is used for dehumidifying the sprayed tail gas, and reducing the water content in the tail gas.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (5)
1. The tail gas treatment system of the ozone catalytic oxidation pond is characterized by comprising the ozone catalytic oxidation pond, wherein an air inlet of the ozone catalytic oxidation pond is connected with an ozone inlet pipe, an air outlet of the ozone catalytic oxidation pond is connected with an air inlet of a gas-liquid separation tank through a pipeline, an air outlet of the gas-liquid separation tank is connected with an air inlet of an ozone decomposition catalyst, an air outlet of the ozone decomposition catalyst is connected with an inlet of a fan, and an outlet of the fan is connected with an emptying pipe; the exhaust pipe is also connected with the ozone inlet pipe through an ozone return pipe, an ozone inlet valve is arranged at the inlet of the ozone inlet pipe, a tail gas exhaust valve is arranged at the outlet of the exhaust pipe, and an ozone return valve is arranged at the ozone return pipe; the outlet of the fan is provided with an ozone content detector, the signal output end of the ozone content detector is electrically connected with the signal input end of the controller, and the signal output end of the controller is electrically connected with the signal input ends of the ozone inlet valve, the tail gas exhaust valve and the ozone return valve.
2. The ozone catalytic oxidation pond tail gas treatment system according to claim 1, wherein a liquid outlet of the gas-liquid separation tank is connected with a water inlet of the ozone catalytic oxidation pond, a liquid level meter is installed on the gas-liquid separation tank, a separation tank liquid outlet valve is installed on the liquid outlet of the gas-liquid separation tank, a signal output end of the liquid level meter is electrically connected with a signal input end of the controller, and a signal input end of the separation tank liquid outlet valve is electrically connected with a signal output end of the controller.
3. The tail gas treatment system of an ozone catalytic oxidation pond according to claim 1, wherein a liquid outlet of the ozone decomposition catalyst is connected with a water inlet of the ozone catalytic oxidation pond, and an automatic liquid outlet valve is arranged at the liquid outlet of the ozone decomposition catalyst.
4. A tail gas treatment system for an ozone catalytic oxidation tank according to any one of claims 1 to 3, wherein a spray header is installed on a pipeline between the ozone catalytic oxidation tank and the gas-liquid separation tank from top to bottom, and the spray header is connected with a spray water pipeline.
5. The ozone catalytic oxidation tank tail gas treatment system according to claim 4, wherein a demister is installed on a pipeline between the ozone catalytic oxidation tank and the gas-liquid separation tank, and the demister is located above the spray header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321371321.3U CN219879561U (en) | 2023-05-30 | 2023-05-30 | Ozone catalytic oxidation pond tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321371321.3U CN219879561U (en) | 2023-05-30 | 2023-05-30 | Ozone catalytic oxidation pond tail gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219879561U true CN219879561U (en) | 2023-10-24 |
Family
ID=88410025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321371321.3U Active CN219879561U (en) | 2023-05-30 | 2023-05-30 | Ozone catalytic oxidation pond tail gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219879561U (en) |
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2023
- 2023-05-30 CN CN202321371321.3U patent/CN219879561U/en active Active
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