VOCs treatment device for gas station

Abstract

The VOCs treatment device of the gas station is provided with an air inlet device and a separation device, the separation device is arranged on one side of the air inlet device, the air inlet device is an air inlet separation barrel, a flow dividing channel is arranged in the air inlet separation barrel, a flow dividing pipeline is arranged on the separation channel, and the flow dividing pipeline is communicated with the separation device. A waste residue treatment part is arranged at the bottom of the air inlet separation barrel, airflow distribution can be balanced and local vortexes can be avoided due to the design of flow dividing channels, sub-pipelines arranged in the separation tank body and the treatment reaction barrel form a gridding filtering system, modular combination is achieved through threaded screwing, the VOCs molecular adsorption capacity can be enhanced, and the treatment effect can be improved. And blocked filter holes can be quickly disassembled and cleaned, so that continuous and efficient operation of the system is guaranteed.

Description

Technical Field

[0001] This utility model relates to a waste gas treatment device, specifically a VOCs treatment device for a gas station. Background Technology

[0002] VOCs, often referred to as volatile organic compounds, participate in the formation of ozone and secondary aerosols in the atmosphere, significantly impacting regional ozone and PM2.5 pollution. Most VOCs have unpleasant odors and are toxic, irritating, teratogenic, and carcinogenic. Benzene, toluene, and formaldehyde, in particular, can cause significant harm to human health. VOCs are important precursors to urban haze and photochemical smog, primarily originating from coal chemical, petrochemical, fuel and coating manufacturing, and solvent manufacturing and use processes. Petrochemical enterprises generate large amounts of VOCs during production, and direct emissions can cause severe environmental pollution. Gas stations also generate significant amounts of VOCs, necessitating VOCs treatment devices to regulate the air quality within their fuel depots.

[0003] In the prior art, CN202322121882.4 discloses a VOCs treatment device for petrochemical enterprises. This utility model discloses a VOCs treatment device for petrochemical enterprises, comprising: a cyclone separation unit, with an air inlet pipe connected to the exhaust gas pipe of the petrochemical production equipment at its upper side; an activated carbon adsorption unit, with the air outlet of the air inlet pipe connected to the upper part of the activated carbon adsorption unit via a connecting pipe, and a negative pressure pump also installed between the connecting pipe and the activated carbon adsorption unit; and a photocatalytic oxidation unit, with an air inlet chamber formed at one end of its inner cavity, and the air outlet of the activated carbon adsorption unit connected to the air inlet chamber of the photocatalytic oxidation unit; the cyclone separation unit removes particulate matter from the exhaust gas, which is then further treated by the activated carbon adsorption unit and the photocatalytic oxidation unit.

[0004] Although existing VOCs treatment equipment has a simple structure, is easy to control, has good treatment effect and low cost, it cannot perform multiple filtrations and treatments of exhaust gas. Utility Model Content

[0005] In order to overcome the shortcomings of existing technologies that only filter exhaust gas once, this utility model provides a VOCs treatment device for gas stations.

[0006] This utility model is achieved using the following technical solution: a VOCs treatment device for a gas station, comprising an air inlet device and a separation device. The separation device is located on one side of the air inlet device. The air inlet device is an air inlet separator. A diversion channel is provided inside the air inlet separator. A diversion pipe is provided on the diversion channel. A waste residue treatment section is located at the bottom of the air inlet separator. The waste residue treatment section is a waste gas pretreatment tank. A reaction liquid inlet pipe is provided on one side of the waste gas pretreatment tank. A transmission pipe is provided on the air inlet device. A separation device is mounted on the transmission pipe. The separation device is a separation tank. A main pipe is provided inside the separation tank. A sub-pipe is provided on the main pipe. A treatment reaction cylinder is mounted on the sub-pipe. The treatment reaction cylinder has multiple reaction holes.

[0007] The sub-pipe is provided with external threads, and the treatment reaction cylinder is provided with internal threads. The sub-pipe and the treatment reaction cylinder are assembled by means of the threads.

[0008] The separation tank is equipped with a reaction pool at the bottom, the treatment reaction cylinder extends into the reaction pool, and the reaction pool is equipped with a liquid input channel at the top.

[0009] The separation tank is equipped with a support frame at the bottom, on which a reaction tank is placed, and a waste liquid outflow channel is provided at the bottom of the reaction tank.

[0010] The separation tank is provided with an outflow pipe on one side, and the waste liquid outflow channel and the outflow pipe are interconnected. The bottom of the separation tank is provided with a bottom support platform.

[0011] Compared to existing technologies, the airflow is stratified through the diversion pipes inside the air inlet separator. The diversion channels can balance the airflow distribution and avoid local eddies. The sub-pipes set inside the separator and the treatment reaction cylinder form a grid-like filtration system. The modular combination is achieved through threaded connections, which can not only enhance the adsorption capacity of VOCs molecules, but also quickly disassemble and clean the clogged filter holes, ensuring the continuous and efficient operation of the system.

[0012] A reaction tank is set at the bottom of the separation tank, and the treatment reaction cylinder extends into the tank to form a submerged reaction zone. The reagents are precisely added through the reaction liquid introduction pipe to promote the full precipitation or neutralization of dissolved pollutants. The waste gas reaction liquid is transported through the top liquid input channel, and the waste liquid outflow channel at the bottom can further discharge the waste liquid after the reaction.

[0013] By relying on the cooperation of the air intake device and the separation device, the exhaust gas of the oil tank in the gas station can be effectively treated. The treatment device adopts a modular quick-disassembly structure, and the external thread of the sub-pipe and the internal thread of the treatment reaction cylinder are screwed together. The parts can be replaced without tools, reducing the difficulty of operation and maintenance. The bottom of the separation tank is equipped with a support platform and a waste liquid through pipe, which facilitates the effective discharge of waste liquid after reaction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a sectional view of the present invention;

[0016] Figure 3 This is a sectional view of the present invention;

[0017] In the diagram: 1 is the air inlet device, 2 is the separation device, 3 is the diversion channel, 4 is the diversion pipe, 5 is the waste gas pretreatment tank, 6 is the reaction liquid inlet pipe, 7 is the transmission channel, 8 is the separation tank, 9 is the main pipe, 10 is the sub-pipe, 11 is the treatment reaction cylinder, 12 is the reaction tank, 13 is the liquid input channel, and 14 is the waste liquid outflow channel. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] A VOCs treatment device for a gas station includes an air inlet device 1 and a separation device 2. The separation device 2 is located on one side of the air inlet device 1. The air inlet device 2 is an air inlet separator. By cooperating with the air inlet device and the separation device, the exhaust gas from the gas tanks in the gas station can be effectively treated. The treatment device adopts a modular quick-release structure. A diversion channel 3 is provided inside the air inlet separator. A diversion pipe 4 is provided on the diversion channel 3. A waste residue treatment section is provided at the bottom of the air inlet separator. The waste residue treatment section is an exhaust gas pretreatment tank 5. A reaction liquid inlet pipe 6 is provided on one side of the exhaust gas pretreatment tank 5. A transmission pipe 7 is provided on the air inlet device. A separation device is installed on the transmission pipe 7. The separation device is a separation tank 8. A main pipe 9 is provided inside the separation tank 8. A sub-pipe 10 is provided on the main pipe 9. A treatment reaction cylinder 11 is installed on the sub-pipe 10. The treatment reaction cylinder 11 is provided with multiple reaction holes.

[0020] Airflow stratification is achieved through the diversion pipe 4 inside the air inlet separator. The diversion channel can balance the airflow distribution and avoid local eddies. The sub-pipes set in the separator tank and the treatment reaction cylinder 11 form a grid-like filtration system. Modular assembly is achieved through threaded connections, which can not only enhance the adsorption capacity of VOCs molecules, but also quickly disassemble and clean the clogged filter pores, ensuring the continuous and efficient operation of the system. The sub-pipes 10 are provided with external threads, and the treatment reaction cylinder is provided with internal threads. The sub-pipes 10 and the treatment reaction cylinder 11 are assembled by threads. The screw connection between the external threads of the sub-pipes 10 and the internal threads of the treatment reaction cylinder 11 allows for component replacement without tools, reducing the difficulty of operation and maintenance. A support platform and waste liquid through pipe are set at the bottom of the separator tank to facilitate the effective discharge of waste liquid after reaction.

[0021] A reaction tank 12 is located at the bottom of the separation tank. The treatment reaction cylinder 11 extends into the reaction tank 12, forming a submerged reaction zone. Reagents are precisely added through a reaction liquid inlet pipe to promote the full precipitation or neutralization of dissolved pollutants. A liquid inlet channel 13 is located at the top of the reaction tank 14, and an outlet pipe 15 is located on one side of the separation tank. The waste liquid outlet channel 14 and the outlet pipe 15 are interconnected. A bottom support platform is located at the bottom of the separation tank, and a shelf is provided at the bottom of the separation tank. The reaction tank 12 is placed on the shelf, and a waste liquid outlet channel 14 is located at the bottom of the reaction tank 12. The waste gas reaction liquid is transported through the top liquid inlet channel 13, and the waste liquid is further discharged through the bottom waste liquid outlet channel 14.

[0022] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A VOCs treatment device for a gas station, comprising an air inlet device and a separation device, wherein the separation device is provided on one side of the air inlet device, the air inlet device is an air inlet separator, the air inlet separator has a diversion channel, the diversion channel has a diversion pipe, the bottom of the air inlet separator has a waste residue treatment section, the waste residue treatment section is a waste gas pretreatment tank, a reaction liquid inlet pipe is provided on one side of the waste gas pretreatment tank, the air inlet device has a transmission pipe, and the transmission pipe is equipped with a separation device, characterized in that: The separation device is a separation tank, which is equipped with a main pipe and a sub-pipe. A treatment reaction cylinder is mounted on the sub-pipe, and the treatment reaction cylinder is provided with multiple reaction holes.

2. The VOCs treatment device for a gas station according to claim 1, characterized in that: The sub-pipe is provided with external threads, and the treatment reaction cylinder is provided with internal threads. The sub-pipe and the treatment reaction cylinder are assembled by means of the threads.

3. The VOCs treatment device for a gas station according to claim 1, characterized in that: The separation tank is equipped with a reaction pool at the bottom, the treatment reaction cylinder extends into the reaction pool, and the reaction pool is equipped with a liquid input channel at the top.

4. The VOCs treatment device for a gas station according to claim 3, characterized in that: The separation tank is equipped with a support frame at the bottom, on which a reaction tank is placed, and a waste liquid outflow channel is provided at the bottom of the reaction tank.

5. A VOCs treatment device for a gas station according to claim 4, characterized in that: The separation tank is provided with an outflow pipe on one side, and the waste liquid outflow channel and the outflow pipe are interconnected. The bottom of the separation tank is provided with a bottom support platform.

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