Automatic treatment device for industrial volatile organic waste gas
By designing an industrial volatile organic waste gas automatic treatment device integrating organic phase filler spray tower, ultraviolet ozone oxidation catalytic device and absorbing liquid circulation system, the problem of difficulty in dealing with high concentration of VOCs in the prior art is solved, and continuous automatic operation, zero VOCs emissions and environmentally friendly treatment effects are achieved.
Patent Information
- Application Number
- CN202422040044.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The prior art is difficult to effectively treat high-concentration volatile organic waste gas, and traditional adsorption and catalytic oxidation methods have problems such as frequent replacement of adsorbents, safety hazards and high maintenance costs.
An automatic treatment device for industrial volatile organic waste gas is designed, including an organic phase filler spray tower, an ultraviolet ozone oxidation catalytic device, an aqueous phase spray tower, an absorbent liquid circulation system and an automatic control device. Through continuous automatic operation and absorbent liquid circulation, effective treatment of high concentration VOCs is achieved.
It realizes the advantages of no need to replace absorbent liquid, zero VOCs emissions, automatic control and environmental protection, reduces maintenance costs and safety hazards, avoids hazardous waste emissions, and has continuous operation of the process and stable operation.
Smart Images
Figure CN222752940U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for treating volatile organic waste gas, in particular to an automatic device for treating industrial volatile organic waste gas. Background Art
[0002] The requirements for volatile organic waste gas (VOCs) emissions in the waste gas emission implementation standards are becoming increasingly stringent. This makes it difficult for existing VOCs absorption and treatment technologies to meet the requirements. Existing VOCs treatment technologies mainly rely on adsorption to remove VOCs and catalytic oxidation to degrade VOCs to achieve standard emissions of VOCs organic waste gas. Among them, adsorption requires continuous renewal of adsorbents. Even if the adsorbent is regenerable, the number of regenerations is not unlimited. Catalytic oxidation degradation of VOCs cannot achieve standard emissions of high-concentration VOCs organic waste gas. Therefore, a combination of multiple technologies was used to achieve standard emissions of VOCs organic waste gas.
[0003] Processes that use adsorption as a means of VOCs removal, such as dust removal-cooling-activated carbon adsorption process, require regular replacement of activated carbon, are difficult to operate continuously, and have high maintenance costs due to the risk of explosion; molecular sieve adsorption also has the problem of intermittent operation due to adsorption saturation. Although the resin adsorption-water phase spray-resin desorption process can be operated continuously, there is also the problem of resin aging; the washing-adsorption-desorption-combustion process can achieve continuous operation to a certain extent, but the safety is low, and the above processes all consume adsorbents. Processes for oxidative catalytic degradation of VOCs, such as physical cooling-hydrogen peroxide VOCs waste gas mixing-regenerative oxidation reactor to purify organic waste gas can achieve continuous operation, but it is difficult to meet the emission standards for high-concentration VOCs, and there is a disadvantage that activated carbon adsorption is required for deep treatment. The integrated RTO device can treat high-concentration VOCs, but it requires that the waste gas does not contain organic matter with complex components such as sulfur, phosphorus, and chlorine, which limits its application. Summary of the invention
[0004] The utility model aims to provide an automatic treatment device for industrial volatile organic waste gas, which can realize continuous automatic operation, is simple to maintain, convenient to operate, and has no hidden safety hazards during operation.
[0005] The utility model solves the technical problem by adopting the following technical scheme: the industrial volatile organic waste gas automatic treatment device comprises an organic phase filler spray tower, an ultraviolet ozone oxidation catalytic device, an aqueous phase spray tower, an absorption liquid discharge tank, an absorption liquid standby storage tank, an evaporation condensation device, and an automatic control device; a waste gas inlet and an absorption liquid discharge port are arranged at the lower part of the organic phase filler spray tower, a waste gas outlet is arranged at the top of the tower, an absorption liquid return port is arranged at the upper part of the tower body, the waste gas outlet is connected to the inlet of the ultraviolet ozone oxidation catalytic device, the outlet of the ultraviolet ozone oxidation catalytic device is connected to the aqueous phase spray tower, and an induced draft fan is arranged at the top of the aqueous phase spray tower; the absorption liquid discharge port is connected to the absorption liquid discharge tank, and the absorption liquid return port is arranged at the upper part of the tower body; the waste gas outlet is connected to the inlet of the ultraviolet ozone oxidation catalytic device, and the outlet of the ultraviolet ozone oxidation catalytic device is connected to the aqueous phase spray tower. The liquid collection and discharge tank is connected to the evaporation separation device through a lifting pump; the evaporation and condensation device includes an evaporation separation device, a stirring device, and a condensation device. The evaporation separation device is a distillation flask with an electric heating jacket. The stirring paddle of the stirring device is arranged in the distillation flask. The distillation flask has four ports. The absorption liquid discharge tank is connected to the absorption liquid inlet of the distillation flask through a lifting pump, the absorption liquid standby storage tank is connected to the absorption liquid outlet of the distillation flask through a lifting pump, the VOCs outlet of the distillation flask is connected to the condensation device, and the condensation device is connected to the VOCs storage tank; the absorption liquid standby storage tank is connected to the absorption liquid return port of the organic phase filler spray tower through a lifting pump, and the absorption liquid standby storage tank is provided with a refrigeration device.
[0006] In the above scheme, the inlet of the ultraviolet ozone oxidation catalytic device is also connected to an ozone generator.
[0007] In the above scheme, the stirring device includes a stirring paddle and a stirring motor, and the stirring paddle is connected to the stirring motor through a port of the distillation flask.
[0008] In the above scheme, the ultraviolet ozone oxidation catalytic device, the ozone generator, each lifting pump, the electric heating jacket, the stirring motor, and the condensing device are all connected to the automatic control device, and the operation is controlled by the automatic control device.
[0009] The utility model has the following beneficial effects:
[0010] The utility model realizes automatic control, is easy to operate and manage, does not need to replace the absorption liquid, and the entire process realizes zero VOCs emission and automatic control, and has the advantages of environmental protection, simple maintenance, labor saving and zero risk.
[0011] The utility model realizes the recycling of absorption liquid, realizes the collection and reuse of VOCs, and avoids the discharge of hazardous waste.
[0012] 3. The absorption liquid after distillation in the absorption liquid standby storage tank continuously enters the organic phase filler spray tower, and the absorption liquid in the organic phase filler spray tower is continuously discharged into the absorption liquid discharge tank, so that the absorption liquid in the organic phase filler spray tower is continuously renewed, so as to achieve the purpose of reducing the VOCs concentration in the exhaust gas leaving the organic phase filler spray tower.
[0013] 4. The absorption liquid standby storage tank is equipped with a refrigeration device to achieve rapid cooling of the absorption liquid and enter the organic phase filler spray tower at low temperature, and use the low-temperature absorption liquid to reduce the temperature of the exhaust gas entering the organic phase filler spray tower. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] In the figure: 1 organic phase filler spray tower; 2 ultraviolet ozone oxidation catalytic device; 3 water phase spray tower; 4 absorption liquid discharge tank; 5 absorption liquid standby storage tank; 6 automatic control device; 7 ozone generator; 8 induced draft fan; 9 lifting pump; 10 evaporation separation device; 11 stirring device; 12 electric heating jacket; 13 condensation device; 14 condensate storage tank; 15 refrigeration device; 16 VOCs storage tank. DETAILED DESCRIPTION
[0016] The utility model is further described below in conjunction with the accompanying drawings:
[0017] Combination Figure 1 As shown, the automatic treatment device for industrial volatile organic waste gas includes an organic phase filler spray tower 1, an ultraviolet ozone oxidation catalytic device 2, an aqueous phase spray tower 3, an absorption liquid discharge tank 4, an absorption liquid standby storage tank 5, an evaporation condensation device, and an automatic control device 6. The lower part of the organic phase filler spray tower 1 is provided with a waste gas inlet and an absorption liquid discharge port, the top of the tower is provided with a waste gas outlet, the upper part of the tower body is provided with an absorption liquid return port, the waste gas outlet is connected to the inlet of the ultraviolet ozone oxidation catalytic device 2, the ozone generator 7 is also connected to the inlet of the ultraviolet ozone oxidation catalytic device, the outlet of the ultraviolet ozone oxidation catalytic device 2 is connected to the aqueous phase spray tower 3, and the top of the aqueous phase spray tower is provided with an induced draft fan 8; the absorption liquid discharge port is connected to the absorption liquid discharge tank, and the absorption liquid discharge tank is connected to the evaporation separation device 10 through a lifting pump 9.
[0018] The evaporation and condensation device comprises an evaporation and separation device 10, a stirring device 11, and a condensation device 13. The evaporation and separation device 10 is a distillation flask with an electric heating jacket 12. The stirring paddle of the stirring device 11 is arranged in the distillation flask. The distillation flask has four ports. The absorption liquid discharge tank 4 is connected to the absorption liquid inlet of the distillation flask through a lifting pump 9. The absorption liquid standby storage tank 5 is connected to the absorption liquid outlet of the distillation flask through a lifting pump 9. The VOCs outlet of the distillation flask is connected to the condensation device 13. The condensation device 13 is connected to the VOCs storage tank 16. The condensation liquid storage tank 14 of the condensation device is equipped with a refrigeration device 15 to continuously cool the condensation liquid. The condensation liquid continuously flows through the condensation device to realize the condensation of VOCs. After condensation, the VOCs liquid enters the VOCs storage tank 16. The absorption liquid standby storage tank 5 is connected to the absorption liquid return port of the organic phase filler spray tower 1 through a lifting pump 9. The absorption liquid standby storage tank is equipped with a refrigeration device.
[0019] The evaporation and condensation device uses an electric heating jacket 12 to heat the four-port evaporation device. The four ports of the evaporation device are respectively connected to the condensation device 13, the stirring device 11, the lifting pump of the absorption liquid discharge tank and the lifting pump of the absorption liquid standby storage tank. The stirring device 11 includes a stirring paddle and a stirring motor, and the stirring paddle is connected to the stirring motor of the stirring device through one port of the distillation flask.
[0020] The ultraviolet ozone oxidation catalytic device 2, the ozone generator 7, the lifting pumps 9, the stirring motor, and the condensing device 13 are all connected to the automatic control device 6 and are controlled to operate by the automatic control device.
[0021] The waste gas first enters the organic phase packing spray tower 1. The waste gas enters from the bottom of the organic phase packing spray tower, is absorbed by the organic absorption liquid, and leaves the organic phase packing spray tower from the top; the packing increases the contact between the waste gas and the absorption liquid to achieve full absorption of VOCs. The waste gas leaving the organic phase packing spray tower carries a small amount of VOCs generated by volatilization due to vapor pressure. The waste gas leaving the organic phase packing spray tower enters the ultraviolet ozone oxidation catalytic device 2 to achieve full degradation of VOCs. The waste gas leaving the ultraviolet ozone oxidation catalytic device enters the water phase spray tower 3 to remove the products of VOCs degradation, and then the waste gas is discharged in compliance with the standards.
[0022] The absorption liquid in the organic phase packing spray tower 1 absorbs VOCs and enters the absorption liquid discharge tank 4. The organic absorption liquid in the absorption liquid discharge tank enters the evaporation condensation device to separate the absorption liquid from VOCs. The purified absorption liquid in the evaporation condensation device enters the absorption liquid standby storage tank 5 through the lifting pump. The absorption liquid in the absorption liquid standby storage tank continuously enters the organic phase packing spray tower 1. The absorption liquid in the organic phase packing spray tower is continuously discharged into the absorption liquid discharge tank. The absorption liquid in the spray tower is continuously updated to reduce the concentration of VOCs in the exhaust gas leaving the organic phase packing spray tower; automatic control is used to achieve continuous operation.
[0023] The lifting pump of the absorption liquid standby storage tank 5 pumps the distilled absorption liquid from the evaporation separation device into the absorption liquid standby storage tank. The absorption liquid standby storage tank is equipped with a refrigeration device 15 to achieve rapid cooling of the absorption liquid and enter the organic phase filler spray tower at a low temperature. The low-temperature absorption liquid is used to reduce the temperature of the exhaust gas entering the organic phase filler spray tower. The automatic control device is used to realize the automatic control of the absorption liquid temperature and the continuous operation of the process.
[0024] The lifting pump of the absorption liquid discharge tank pumps the absorption liquid into the evaporation bottle, and then the heating jacket is started by the automatic control device to start the distillation, condensation and purification process of the absorption liquid after absorption. The automatic control device is used to realize the continuous automatic switching of each unit.
Claims
1. An automatic treatment device for industrial volatile organic waste gas, characterized in that: The automatic treatment device for industrial volatile organic waste gas comprises an organic phase filler spray tower, an ultraviolet ozone oxidation catalytic device, an aqueous phase spray tower, an absorption liquid discharge tank, an absorption liquid standby storage tank, an evaporation condensation device, and an automatic control device. The lower part of the organic phase filler spray tower is provided with an exhaust gas inlet and an absorption liquid discharge port, the top of the tower is provided with an exhaust gas outlet, the upper part of the tower body is provided with an absorption liquid return port, the exhaust gas outlet is connected to the inlet of the ultraviolet ozone oxidation catalytic device, the outlet of the ultraviolet ozone oxidation catalytic device is connected to the aqueous phase spray tower, and an induced draft fan is provided on the top of the aqueous phase spray tower; the absorption liquid discharge port is connected to the absorption liquid discharge tank, and the absorption liquid discharge tank is connected to the exhaust gas return port through a lifting pump. The evaporation separation device is connected; the evaporation condensation device includes an evaporation separation device, a stirring device, and a condensation device. The evaporation separation device is a distillation flask with an electric heating jacket. The stirring paddle of the stirring device is arranged in the distillation flask. The distillation flask has four ports. The absorption liquid discharge tank is connected to the absorption liquid inlet of the distillation flask through a lifting pump, the absorption liquid standby storage tank is connected to the absorption liquid outlet of the distillation flask through a lifting pump, the VOCs outlet of the distillation flask is connected to the condensation device, and the condensation device is connected to the VOCs storage tank; the absorption liquid standby storage tank is connected to the absorption liquid return port of the organic phase filler spray tower through a lifting pump, and the absorption liquid standby storage tank is provided with a refrigeration device.
2. The automatic treatment device for industrial volatile organic waste gas according to claim 1 is characterized in that: The inlet of the ultraviolet ozone oxidation catalytic device is also connected to an ozone generator.
3. The automatic treatment device for industrial volatile organic waste gas according to claim 2 is characterized in that: The stirring device comprises a stirring paddle and a stirring motor, and the stirring paddle is connected to the stirring motor through a port of the distillation flask.
4. The automatic treatment device for industrial volatile organic waste gas according to claim 3 is characterized in that: The ultraviolet ozone oxidation catalytic device, the ozone generator, the lifting pumps, the stirring motor, the electric heating jacket and the condensing device are all connected to the automatic control device.