Waste gas treatment equipment and method of use thereof

Abstract

The present application relates to the technical field of waste gas separation and treatment, and in particular to a waste gas treatment device and its use method, comprising a first drying tank, an adsorption mechanism, and an incineration assembly. The adsorption mechanism is located between the first drying tank and the incineration assembly. An air intake pipe is connected between the first drying tank and the workshop. The air intake pipe is provided with a first air pump electrically connected to a control system. The first drying tank is provided with a drying element for drying the waste gas. The adsorption mechanism includes a first adsorption tank. An intermediate pipe is connected between the first drying tank and the first adsorption tank. The first adsorption tank is provided with an exhaust pipe. Zeolite is provided in the first adsorption tank. The zeolite is used to adsorb volatile organic compounds. The first adsorption tank is provided with a desorption assembly for desorbing the volatile organic compounds from the zeolite. The incineration assembly is used to incinerate the volatile organic compounds desorbed from the zeolite. The present application has the effect of reducing the hazards of volatile organic compounds and saving energy.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas separation and treatment, and in particular to a waste gas treatment device and a method for using the same. Background Art

[0002] With the development of industry, more and more equipment uses spray painting as a way to prevent corrosion or improve appearance. In order to prevent the spread of volatile organic compounds (VOCs) during the painting process, workers usually paint the equipment in a closed workshop. The main components of VOCs in the workshop are benzene series, and the rest are non-methane total hydrocarbon exhaust gases.

[0003] As the painting operation progresses, the concentration of volatile organic compounds in the workshop will gradually increase. When the concentration of volatile organic compounds in the workshop rises to a certain level, it will irritate people's eyes and respiratory tract, cause skin allergies, sore throat and fatigue, and in severe cases, damage people's central nervous system, liver and other organs.

[0004] At present, the common treatment method is to extract all the gas in the workshop through an exhaust fan and burn it through an incineration device at the exhaust gas outlet.

[0005] In the above technology, as the concentration of volatile organic compounds in the workshop is continuously extracted, the concentration of volatile organic compounds at the exhaust gas outlet continues to decrease, while the combustion treatment effect of the incineration equipment usually does not change. This will result in a high concentration of volatile organic compounds at the beginning of the exhaust gas combustion treatment, and the exhaust gas combustion treatment may not be sufficient and be discharged into the atmosphere, which will pollute the atmosphere; at the end of the exhaust gas combustion treatment, the concentration of volatile organic compounds is low, and the incineration equipment will waste a lot of fuel when burning exhaust gas, which increases the cost of exhaust gas treatment and has shortcomings. Summary of the Invention

[0006] In order to improve the problems existing in the waste gas combustion treatment, the present application provides a waste gas treatment device and a method of using the same.

[0007] In the first aspect, the present application provides an exhaust gas treatment device that adopts the following technical solutions:

[0008] A waste gas treatment device includes a first drying tank, an adsorption mechanism and an incineration component, the adsorption mechanism is located between the first drying tank and the incineration component, an air intake pipe is connected between the first drying tank and the workshop, the air intake pipe is provided with a first air pump electrically connected to a control system, a drying element for drying waste gas is provided in the first drying tank, the adsorption mechanism includes a first adsorption tank, an intermediate pipe is connected between the first drying tank and the first adsorption tank, an exhaust pipe is provided on the first adsorption tank, zeolite is provided in the first adsorption tank, the zeolite is used to adsorb volatile organic compounds, the first adsorption tank is provided with a desorption component for desorbing volatile organic compounds from the zeolite, and the incineration component is used to incinerate the volatile organic compounds desorbed from the zeolite.

[0009] By adopting the above technical solution, workers start the first air pump through the control system, and the first air pump draws the gas in the workshop to the first drying tank. The gas dried in the first drying tank flows to the first adsorption tank through the intermediate pipe. The zeolite in the first adsorption tank adsorbs the volatile organic compounds in the gas, and the remaining gas is discharged through the exhaust pipe. After a period of time, the desorption component desorbs the volatile organic compounds adsorbed on the zeolite. The desorbed volatile organic compounds flow to the incineration component for centralized incineration, thereby solving the problem caused by the change in the concentration of volatile organic compounds in the exhaust gas of the combustion workshop, which is conducive to reducing the cost of exhaust gas treatment and reducing the possibility of environmental pollution.

[0010] Optionally, the drying element includes a plurality of adsorption layers disposed in the first drying tank, and the plurality of adsorption layers are arranged from the air inlet end to the air outlet end of the first drying tank.

[0011] By adopting the above technical solution, moisture and other components in the exhaust gas are adsorbed through multiple adsorption layers, with high adsorption drying efficiency and good adsorption effect, which reduces the impact of other substances in the exhaust gas on the subsequent adsorption of volatile organic compounds.

[0012] Optionally, a second adsorption tank and a third adsorption tank having the same structure as the first adsorption tank are provided next to the first adsorption tank.

[0013] By adopting the above technical solution, when the zeolite in the first adsorption tank is undergoing volatile organic compound desorption treatment, the gas from the first drying tank can flow to the second adsorption tank for zeolite adsorption, and the third adsorption tank is cooled, thereby shortening the equipment waiting time occupied by the zeolite desorption in the first adsorption tank. Relying on the first adsorption tank and the second adsorption tank to cyclically adsorb and desorb volatile organic compounds in the gas is beneficial to improving the efficiency of waste gas separation treatment.

[0014] Optionally, the incineration assembly includes an incineration box, an incineration nozzle is provided in the incineration box, a first solenoid valve is provided on the exhaust pipe, the incineration box is connected to the exhaust end of the first adsorption tank through a second solenoid valve, the first solenoid valve and the second solenoid valve are both electrically connected to the control system, the incineration box is connected with an air inlet pipe and a drain pipe, the air inlet pipe is provided with a second air pump electrically connected to the control system, and the drain pipe is provided with a drain valve.

[0015] By adopting the above technical solution, before the desorption component desorbs the zeolite in the first adsorption tank, the worker closes the first solenoid valve and opens the second solenoid valve through the control system. The volatile organic matter desorbed in the first adsorption tank flows into the incineration box through the second solenoid valve, and the incineration nozzle in the incineration box is ignited. The volatile organic matter burns in the incineration box, causing the temperature in the incineration box to rise. The high temperature in the incineration box causes the volatile organic matter that flows in subsequently to burn, thereby achieving the treatment of volatile organic matter. At the same time, it reduces the fuel consumed by the continuous incineration of volatile organic matter, which is beneficial to reducing the cost of waste gas treatment.

[0016] Optionally, the exhaust pipe is connected to a cooling box, which isolates the exhaust pipe. The cooling box is provided with a sensor electrically connected to the control system and used to detect the concentration of volatile organic compounds. The first solenoid valve is located between the first adsorption tank and the cooling box. The intermediate pipe is provided with a third solenoid valve electrically connected to the control system. A return pipe is connected between the cooling box and the intermediate pipe. The connection point between the return pipe and the intermediate pipe is located between the third solenoid valve and the first adsorption tank. The return pipe is provided with a third air pump electrically connected to the control system. A fourth air pump is provided on the exhaust pipe on the side of the cooling box facing away from the first solenoid valve, and the fourth air pump is electrically connected to the control system.

[0017] By adopting the above technical solution, the control system closes the second solenoid valve and opens the first solenoid valve, and the gas from the intermediate pipe flows to the cooling box through the first adsorption tank. The sensor on the cooling box feeds back the organic matter concentration in the cooling box to the control system. When the organic matter concentration in the cooling box triggers the sensor, the control system closes the third solenoid valve corresponding to the first adsorption tank and opens the third solenoid valve corresponding to the second adsorption tank at the same time. The control system starts the third air pump, and the third air pump draws the gas in the cooling box back to the intermediate pipe. The first adsorption tank adsorbs the gas from the return pipe again until the organic matter concentration in the cooling box can no longer trigger the sensor.

[0018] Optionally, the desorption component includes a second drying tank, which is provided with multiple drying layers. A heating tank is provided on the first adsorption tank. There is a gap between the circumferential outer wall of the first adsorption tank and the circumferential inner wall of the heating tank. The second drying tank is connected to the incineration box through a fifth air pump, the second drying tank is connected to the heating tank through a fourth solenoid valve, and the heating tank is connected to the cooling box through a fifth solenoid valve. The fifth air pump, the fifth solenoid valve and the fourth solenoid valve are all electrically connected to the control system.

[0019] By adopting the above technical solution, when the concentration of organic matter in the cooling box cannot trigger the sensor, the control system closes the first solenoid valve and the drain valve, and opens the second solenoid valve, the fourth solenoid valve, the fifth solenoid valve, the second air pump, the fourth air pump and the fifth air pump. The high-temperature gas in the incineration box is pumped to the second drying tank by the fifth air pump for drying. The dried high-temperature gas flows to the gap between the heating tank and the first adsorption tank through the fourth solenoid valve. The first adsorption tank is heated, and the zeolite releases the adsorbed volatile organic matter after heating. The released volatile organic matter flows into the incineration box through the second solenoid valve, and the gas in the heating tank flows into the cooling box through the fifth solenoid valve for cooling. The cooled gas is discharged through the fourth air pump.

[0020] Optionally, a vortex tube is provided between the air inlet pipe and the second air pump, the second air pump is connected to the air inlet end of the vortex tube, the air inlet pipe is connected to the hot air end of the vortex tube, a cooling tube is connected between the cold air end of the vortex tube and the first adsorption tank, the cooling tube passes through the heating tank, and a sixth solenoid valve electrically connected to the control system is provided on the cooling tube.

[0021] By adopting the above technical solution, the control system closes the sixth solenoid valve corresponding to the first adsorption tank and the second adsorption tank, opens the sixth solenoid valve corresponding to the third adsorption tank, and the second air pump supplies high-pressure airflow to the air inlet end of the vortex tube. The cold air generated by the cold air end of the vortex tube flows into the third adsorption tank through the sixth solenoid valve corresponding to the third adsorption tank, cooling the zeolite in the third adsorption tank, regenerating the zeolite in the third adsorption tank, and preparing for the next adsorption of volatile organic compounds.

[0022] Optionally, a spiral sheet is provided between the circumferential outer wall of the first adsorption tank and the circumferential inner wall of the heating tank.

[0023] By adopting the above technical solution, the spiral blade increases the contact time between the high-temperature gas and the first adsorption tank, improves the heating effect of the first adsorption tank, shortens the time required for the zeolite to heat up, and is beneficial to improving the efficiency of the zeolite in releasing volatile organic compounds per unit time.

[0024] Optionally, the cross section of the zeolite in the first adsorption tank is honeycomb-shaped.

[0025] By adopting the above technical solution, the contact area between zeolite and volatile organic compounds in the gas is increased, which is beneficial to improving the adsorption efficiency of volatile organic compounds in the gas.

[0026] In a second aspect, the present application provides a method for using an exhaust gas treatment device, which adopts the following technical solution:

[0027] A method for using an exhaust gas treatment device comprises the following steps:

[0028] S1. The control system starts the first air pump, which draws volatile organic gas in the workshop into the first drying tank. The drying element in the first drying tank absorbs moisture from the gas.

[0029] S2, the gas adsorbed in the first drying tank flows to the first adsorption tank through the intermediate pipe, the zeolite in the first adsorption tank adsorbs volatile organic compounds in the gas, and the remaining gas is discharged from the exhaust pipe;

[0030] S3. The desorption component desorbs the volatile organic compounds adsorbed on the zeolite, and the incineration component incinerates the volatile organic compounds desorbed from the zeolite.

[0031] By adopting the above technical solution, the first drying tank dries the gas drawn by the first air pump, the first adsorption tank adsorbs volatile organic compounds in the dried gas, the desorption component centrally desorbs the volatile organic compounds adsorbed on the zeolite, and the incineration component incinerates the centrally desorbed volatile organic compounds.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The worker starts the first air pump through the control system. The first air pump draws the air in the workshop into the first drying tank. The dried air in the first drying tank flows to the first adsorption tank through the intermediate pipe. The zeolite in the first adsorption tank adsorbs the volatile organic compounds in the air, and the remaining air is discharged through the exhaust pipe. After a period of time, the desorption component desorbs the volatile organic compounds adsorbed on the zeolite. The desorbed volatile organic compounds flow to the incineration component for centralized incineration. This solves the problem caused by the change in the concentration of volatile organic compounds in the exhaust gas of the combustion workshop, helps to reduce the cost of exhaust gas treatment and minimize the possibility of environmental pollution.

[0034] 2. Before the desorption component desorbs the zeolite in the first adsorption tank, the worker closes the first solenoid valve and opens the second solenoid valve through the control system. The volatile organic compounds desorbed from the first adsorption tank flow through the second solenoid valve into the incineration box. The incineration nozzle in the incineration box is ignited, and the volatile organic compounds burn in the incineration box, causing the temperature inside the incineration box to rise. The high temperature in the incineration box causes the subsequent volatile organic compounds to burn, reducing the cost of waste gas treatment.

[0035] 3. The control system closes the sixth solenoid valve corresponding to the first adsorption tank and the second adsorption tank, opens the sixth solenoid valve corresponding to the third adsorption tank, and the second air pump supplies high-pressure airflow to the air inlet end of the vortex tube. The cold air generated by the cold air end of the vortex tube flows into the third adsorption tank through the sixth solenoid valve corresponding to the third adsorption tank, cooling the zeolite in the third adsorption tank and regenerating the zeolite in the third adsorption tank to prepare for the next adsorption of volatile organic compounds. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural diagram of an embodiment of the present application.

[0037] Figure 2 It is a structural diagram of the positional relationship among the first adsorption tank, the second adsorption tank and the third adsorption tank in the embodiment of the present application.

[0038] Figure 3 It is a cross-sectional view showing the positional relationship among the heating tank, the first drying tank and the vortex tube in the embodiment of the present application.

[0039] Figure 4 Schematic diagram of the cross section of the zeolite in the examples of the present application.

[0040] Explanation of reference numerals: 1. Workshop; 2. First drying tank; 3. Adsorption mechanism; 31. First adsorption tank; 32. Intermediate pipe; 33. Exhaust pipe; 34. Zeolite; 35. Desorption assembly; 351. Second drying tank; 352. Drying layer; 353. Heating tank; 354. Fifth air pump; 355. Fourth solenoid valve; 356. Fifth solenoid valve; 4. Incineration assembly; 41. Incineration box; 42. Incineration nozzle; 43. First solenoid valve; 44. Second solenoid valve; 45. Inlet Air duct; 46, drain pipe; 47, second air pump; 48, drain valve; 5, air inlet pipe; 6, first air pump; 7, drying element; 71, adsorption layer; 8, second adsorption tank; 9, third adsorption tank; 10, cooling box; 11, sensor; 12, third solenoid valve; 13, return pipe; 14, third air pump; 15, fourth air pump; 16, vortex tube; 17, cooling pipe; 18, sixth solenoid valve; 19, spiral blade; 20, rack; 21, exhaust pipe; 22, partition net. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-4This application is described in further detail.

[0042] Example 1

[0043] The embodiment of the present application discloses an exhaust gas treatment device.

[0044] Reference Figure 1 A waste gas treatment device includes a rack 20 arranged next to a workshop 1, an exhaust pipe 21 is arranged on the workshop 1, a first drying tank 2, an adsorption mechanism 3 and an incineration component 4 are arranged on the rack 20, and the adsorption mechanism 3 is located between the first drying tank 2 and the incineration component 4.

[0045] Reference Figure 1 、 Figure 2 and Figure 3 An air intake pipe 5 is connected between the first drying tank 2 and the workshop 1. A first air pump 6 electrically connected to the control system is bolted to the air intake pipe 5. A drying element 7 for drying exhaust gas is arranged in the first drying tank 2. The drying element 7 includes a multi-layer adsorption layer 71 installed in the first drying tank 2. The multi-layer adsorption layer 71 is arranged from the air inlet end to the air outlet end of the first drying tank 2.

[0046] The worker starts the first air pump 6 through the control system. The first air pump 6 draws the gas in the workshop 1 to the first drying tank 2. The multi-layer adsorption layer 71 in the first drying tank 2 adsorbs substances such as moisture in the exhaust gas and dries the exhaust gas, thereby reducing the impact of other substances in the exhaust gas on the subsequent adsorption and separation of volatile organic compounds in the exhaust gas.

[0047] Reference Figure 1 、 Figure 2 and Figure 3 The adsorption mechanism 3 includes a first adsorption tank 31, an intermediate pipe 32 is connected between the first drying tank 2 and the first adsorption tank 31, an exhaust pipe 33 is connected to the first adsorption tank 31, and a second adsorption tank 8 and a third adsorption tank 9 with the same structure as the first adsorption tank 31 are arranged next to the first adsorption tank 31 on the frame 20.

[0048] Reference Figure 1 、 Figure 2 and Figure 4 A zeolite 34 with a honeycomb-shaped cross section is installed in the first adsorption tank 31. The zeolite 34 is used to adsorb volatile organic compounds. A desorption component 35 is arranged on the first adsorption tank 31 to separate the volatile organic compounds from the zeolite 34. The incineration component 4 is used to incinerate the volatile organic compounds desorbed from the zeolite 34.

[0049] Reference Figure 1 、 Figure 2 and Figure 3The incineration assembly 4 includes an incineration box 41, in which a plurality of incineration nozzles 42 are installed. A first solenoid valve 43 is bolted to the exhaust pipe 33. The incineration box 41 is connected to the exhaust end of the first adsorption tank 31 through a second solenoid valve 44. The first solenoid valve 43 and the second solenoid valve 44 are both electrically connected to the control system. An air inlet pipe 45 and a liquid discharge pipe 46 are connected to the incineration box 41, and a partition net 22 is installed in the incineration box 41.

[0050] Reference Figure 1 、 Figure 2 and Figure 3 A second air pump 47 electrically connected to the control system is arranged on the air inlet pipe 45, a drain valve 48 is bolted to the drain pipe 46, the exhaust pipe 33 is connected to the cooling box 10, the cooling box 10 is bolted to the frame 20, the cooling box 10 isolates the exhaust pipe 33, and a sensor 11 electrically connected to the control system and used to detect the concentration of volatile organic compounds is bolted to the cooling box 10. The first solenoid valve 43 is located between the first adsorption tank 31 and the cooling box 10.

[0051] Reference Figure 1 、 Figure 2 and Figure 3 A third solenoid valve 12 electrically connected to the control system is bolted to the intermediate pipe 32, a return pipe 13 is connected between the cooling box 10 and the intermediate pipe 32, the connection point of the return pipe 13 and the intermediate pipe 32 is located between the third solenoid valve 12 and the first adsorption tank 31, a third air pump 14 electrically connected to the control system is bolted to the return pipe 13, and a fourth air pump 15 is bolted to the exhaust pipe 33 on the side of the cooling box 10 facing away from the first solenoid valve 43, and the fourth air pump 15 is electrically connected to the control system.

[0052] The control system closes the third solenoid valve 12 corresponding to the second adsorption tank 8 and the third adsorption tank 9, and the dried exhaust gas flows into the first adsorption tank 31. When the sensor 11 on the cooling box 10 corresponding to the first adsorption tank 31 detects volatile organic compounds, the control system closes the third solenoid valve 12 corresponding to the first adsorption tank 31 and opens the third solenoid valve 12 corresponding to the second adsorption tank 8.

[0053] Then the control system starts the third air pump 14 corresponding to the first adsorption tank 31. The third air pump 14 draws the gas in the cooling box 10 to the intermediate pipe 32 corresponding to the first adsorption tank 31, so that the gas from the cooling box 10 is adsorbed again until the sensor 11 on the cooling box 10 corresponding to the first adsorption tank 31 can no longer be triggered. The control system starts the second solenoid valve 44 corresponding to the first adsorption tank 31 and closes the first solenoid valve 43 corresponding to the first adsorption tank 31. The volatile organic compounds released by the zeolite 34 in the first adsorption tank 31 flow into the incineration box 41 through the second solenoid valve 44.

[0054] The incineration nozzle 42 in the incineration box 41 ignites the volatile organic compounds, and at the same time, the second air pump 47 fills a large amount of air into the incineration box 41. Under the obstruction of the partition net 22, the air drawn in by the second air pump 47 is fully mixed with the volatile organic compounds, so that the volatile organic compounds are fully burned in the incineration box 41. The combustion of the volatile organic compounds causes the temperature in the incineration box 41 to continue to rise. The high temperature in the incineration box 41 causes the volatile organic compounds that subsequently flow in to continue to burn, and the water produced by the combustion is discharged through the drain pipe 46.

[0055] Reference Figure 1 、 Figure 2 and Figure 3 The desorption component 35 includes a second drying tank 351, in which a plurality of drying layers 352 are installed. The plurality of drying layers 352 are arranged from the air inlet end to the air outlet end of the second drying tank 351. A heating tank 353 is provided on the first adsorption tank 31. There is a gap between the circumferential outer wall of the first adsorption tank 31 and the circumferential inner wall of the heating tank 353. A spiral sheet 19 is arranged in the gap between the first adsorption tank 31 and the heating tank 353.

[0056] Reference Figure 1 、 Figure 2 and Figure 3 The spiral sheet 19 is wound on the first adsorption tank 31, the second drying tank 351 and the incineration box 41 are connected through the fifth air pump 354, the second drying tank 351 and the heating tank 353 are connected through the fourth solenoid valve 355, and the heating tank 353 and the cooling box 10 are connected through the fifth solenoid valve 356. The fifth air pump 354, the fifth solenoid valve 356 and the fourth solenoid valve 355 are all electrically connected to the control system.

[0057] The worker closes the drain valve 48 and starts the fifth air pump 354 through the control system. At the same time, the fourth solenoid valve 355 and the fifth solenoid valve 356 corresponding to the first adsorption tank 31 are started through the control system. The fifth air pump 354 draws the high-temperature gas in the incineration box 41 to the second drying tank 351 for drying. The dried high-temperature gas flows to the gap between the heating tank 353 and the first adsorption tank 31 through the fourth solenoid valve 355 corresponding to the first adsorption tank 31.

[0058] Under the obstruction of the spiral blade 19, the first adsorption tank 31 is rapidly heated, and the zeolite 34 in the first adsorption tank 31 releases the adsorbed volatile organic compounds after being heated. The control system starts the third air pump 14 corresponding to the first adsorption tank 31, and the third air pump 14 pumps the gas in the cooling box 10 into the intermediate pipe 32 corresponding to the first adsorption tank 31.

[0059] The released volatile organic matter is flowed into the incineration box 41 by the airflow through the second solenoid valve 44 corresponding to the first adsorption tank 31, and the gas in the heating tank 353 corresponding to the first adsorption tank 31 flows into the cooling box 10 corresponding to the first adsorption tank 31 through the fifth solenoid valve 356 corresponding to the first adsorption tank 31 for cooling. The cooled gas is discharged to the exhaust pipe 21 through the fourth air pump 15 corresponding to the first adsorption tank 31.

[0060] Reference Figure 1 、 Figure 2 and Figure 3 A vortex tube 16 is arranged between the air inlet pipe 45 and the second air pump 47. The second air pump 47 is connected to the air inlet end of the vortex tube 16. The air inlet pipe 45 is connected to the hot air end of the vortex tube 16. A cooling pipe 17 is connected between the cold air end of the vortex tube 16 and the first adsorption tank 31. The cooling pipe 17 passes through the heating tank 353. The cooling pipe 17 is bolted with a sixth solenoid valve 18 electrically connected to the control system.

[0061] When the control system starts the second air pump 47, the control system simultaneously closes the sixth solenoid valve 18 corresponding to the first adsorption tank 31 and the second adsorption tank 8, opens the fourth air pump 15, the sixth solenoid valve 18 and the first solenoid valve 43 corresponding to the third adsorption tank 9, and the second air pump 47 supplies high-pressure airflow to the air inlet end of the vortex tube 16, and the hot air generated by the hot air end of the vortex tube 16 flows into the incineration box 41.

[0062] The cold air generated by the cold air end of the vortex tube 16 flows into the third adsorption tank 9 through the sixth solenoid valve 18 corresponding to the third adsorption tank 9, cooling the zeolite 34 in the third adsorption tank 9. The cooled exhaust gas is pumped to the exhaust pipe 21 by the fourth air pump 15 corresponding to the third adsorption tank 9, so that the zeolite 34 in the third adsorption tank 9 can restore its adsorption capacity and prepare for the next adsorption.

[0063] The implementation principle of Example 1 is as follows: a worker activates the first air pump 6 through the control system, and the first air pump 6 draws the gas in the workshop 1 into the first drying tank 2. The multi-layer adsorption layer 71 in the first drying tank 2 adsorbs substances such as moisture in the exhaust gas and dries the exhaust gas, thereby reducing the impact of other substances in the exhaust gas on the subsequent adsorption and separation of volatile organic compounds in the exhaust gas.

[0064] The control system closes the third solenoid valve 12 corresponding to the second adsorption tank 8 and the third adsorption tank 9, and the dried exhaust gas flows into the first adsorption tank 31. When the sensor 11 on the cooling box 10 corresponding to the first adsorption tank 31 detects volatile organic compounds, the control system closes the third solenoid valve 12 corresponding to the first adsorption tank 31 and opens the third solenoid valve 12 corresponding to the second adsorption tank 8.

[0065] Then the control system starts the third air pump 14 corresponding to the first adsorption tank 31. The third air pump 14 draws the gas in the cooling box 10 to the intermediate pipe 32 corresponding to the first adsorption tank 31, so that the gas from the cooling box 10 is adsorbed again until the sensor 11 on the cooling box 10 corresponding to the first adsorption tank 31 can no longer be triggered. The control system starts the second solenoid valve 44 corresponding to the first adsorption tank 31 and closes the first solenoid valve 43 corresponding to the first adsorption tank 31. The volatile organic compounds released by the zeolite 34 in the first adsorption tank 31 flow into the incineration box 41 through the second solenoid valve 44.

[0066] The incineration nozzle 42 in the incineration box 41 ignites the volatile organic compounds, and at the same time, the second air pump 47 fills a large amount of air into the incineration box 41. Under the obstruction of the partition net 22, the air drawn in by the second air pump 47 is fully mixed with the volatile organic compounds, so that the volatile organic compounds are fully burned in the incineration box 41. The combustion of the volatile organic compounds causes the temperature in the incineration box 41 to continue to rise. The high temperature in the incineration box 41 causes the volatile organic compounds that subsequently flow in to continue to burn, and the water produced by the combustion is discharged through the drain pipe 46.

[0067] The worker closes the drain valve 48 and starts the fifth air pump 354 through the control system. At the same time, the fourth solenoid valve 355 and the fifth solenoid valve 356 corresponding to the first adsorption tank 31 are started through the control system. The fifth air pump 354 draws the high-temperature gas in the incineration box 41 to the second drying tank 351 for drying. The dried high-temperature gas flows to the gap between the heating tank 353 and the first adsorption tank 31 through the fourth solenoid valve 355 corresponding to the first adsorption tank 31.

[0068] Under the obstruction of the spiral blade 19, the first adsorption tank 31 is rapidly heated, and the zeolite 34 in the first adsorption tank 31 releases the adsorbed volatile organic compounds after being heated. The control system starts the third air pump 14 corresponding to the first adsorption tank 31, and the third air pump 14 pumps the gas in the cooling box 10 into the intermediate pipe 32 corresponding to the first adsorption tank 31.

[0069] The released volatile organic matter is flowed into the incineration box 41 by the airflow through the second solenoid valve 44 corresponding to the first adsorption tank 31, and the gas in the heating tank 353 corresponding to the first adsorption tank 31 flows into the cooling box 10 corresponding to the first adsorption tank 31 through the fifth solenoid valve 356 corresponding to the first adsorption tank 31 for cooling. The cooled gas is discharged to the exhaust pipe 21 through the fourth air pump 15 corresponding to the first adsorption tank 31.

[0070] When the control system starts the second air pump 47, the control system simultaneously closes the sixth solenoid valve 18 corresponding to the first adsorption tank 31 and the second adsorption tank 8, opens the fourth air pump 15, the sixth solenoid valve 18 and the first solenoid valve 43 corresponding to the third adsorption tank 9, and the second air pump 47 supplies high-pressure airflow to the air inlet end of the vortex tube 16, and the hot air generated by the hot air end of the vortex tube 16 flows into the incineration box 41.

[0071] The cold air generated by the cold air end of the vortex tube 16 flows into the third adsorption tank 9 through the sixth solenoid valve 18 corresponding to the third adsorption tank 9, cooling the zeolite 34 in the third adsorption tank 9. The cooled exhaust gas is pumped to the exhaust pipe 21 by the fourth air pump 15 corresponding to the third adsorption tank 9, so that the zeolite 34 in the third adsorption tank 9 can restore its adsorption capacity and prepare for the next adsorption.

[0072] Example 2

[0073] Example 2 of the present application discloses a method for using an exhaust gas treatment device, comprising the following steps:

[0074] S1. The control system starts the first air pump 6, which pumps the volatile organic compound gas in the workshop 1 to the first drying tank 2. The drying element 7 in the first drying tank 2 absorbs moisture in the gas.

[0075] S2. The control system opens the first solenoid valve 43, the third solenoid valve 12, and the fourth air pump 15 corresponding to the first adsorption tank 31. The gas adsorbed in the first drying tank 2 flows through the intermediate pipe 32 to the first adsorption tank 31. The zeolite 34 in the first adsorption tank 31 adsorbs volatile organic compounds in the gas. The remaining gas is discharged into the cooling box 10 corresponding to the first drying tank 2 and finally discharged to the exhaust pipe 21 by the fourth air pump 15 corresponding to the first adsorption tank 31.

[0076] S3, after the sensor 11 corresponding to the first adsorption tank 31 is triggered, the control system closes the third solenoid valve 12 corresponding to the first adsorption tank 31, and simultaneously opens the first solenoid valve 43, the third solenoid valve 12 and the fourth air pump 15 corresponding to the second adsorption tank 8;

[0077] S4, the control system starts the third air pump 14 and the fifth solenoid valve 356 corresponding to the first adsorption tank 31 until the sensor 11 corresponding to the first adsorption tank 31 cannot be triggered;

[0078] S5. The control system closes the first solenoid valve 43 corresponding to the first adsorption tank 31, opens the second solenoid valve 44 and the fourth solenoid valve 355 corresponding to the first adsorption tank 31, and simultaneously opens the second air pump 47, the fifth air pump 354, and the sixth solenoid valve 18 corresponding to the third adsorption tank 9;

[0079] S6. The second air pump 47 fills the incineration box 41 with air. The high-temperature gas in the incineration box 41 is dried by the fifth air pump 354 through the second drying tank 351 and then transported to the heating tank 353 corresponding to the first adsorption tank 31 by the fourth solenoid valve 355. The third air pump 14 corresponding to the first adsorption tank 31 blows the volatile organic compounds released by the zeolite 34 in the first adsorption tank 31 into the incineration box 41. At the same time, the fourth air pump 15 corresponding to the first adsorption tank 31 discharges the gas in the cooling box 10 to the exhaust pipe 21.

[0080] S7, the second air pump 47 fills the vortex tube 16 with high-pressure gas, and the cold air generated by the cold air end of the vortex tube 16 flows into the third adsorption tank 9 through the sixth solenoid valve 18 corresponding to the third adsorption tank 9, cooling the zeolite 34 in the third adsorption tank 9.

[0081] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An exhaust gas treatment device, characterized in that: The invention comprises a first drying tank (2), an adsorption mechanism (3) and an incineration assembly (4), wherein the adsorption mechanism (3) is located between the first drying tank (2) and the incineration assembly (4), an air intake pipe (5) is connected between the first drying tank (2) and the workshop (1), and a first air pump (6) electrically connected to a control system is provided on the air intake pipe (5), a drying element (7) for drying exhaust gas is provided in the first drying tank (2), the adsorption mechanism (3) comprises a first adsorption tank (31), the first An intermediate pipe (32) is connected between the drying tank (2) and the first adsorption tank (31); an exhaust pipe (33) is provided on the first adsorption tank (31); a zeolite (34) is provided in the first adsorption tank (31); the zeolite (34) is used to adsorb volatile organic compounds; a desorption component (35) is provided on the first adsorption tank (31) for separating the volatile organic compounds from the zeolite (34); and the incineration component (4) is used to incinerate the volatile organic compounds desorbed from the zeolite (34); Next to the first adsorption tank (31) are arranged a second adsorption tank (8) and a third adsorption tank (9) having the same structure as the first adsorption tank (31); The incineration assembly (4) includes an incineration box (41), an incineration nozzle (42) is provided in the incineration box (41), a first solenoid valve (43) is provided on the exhaust pipe (33), the incineration box (41) is communicated with the exhaust end of the first adsorption tank (31) via a second solenoid valve (44), the first solenoid valve (43) and the second solenoid valve (44) are both electrically connected to a control system, the incineration box (41) is communicated with an air inlet pipe (45) and a liquid discharge pipe (46), the air inlet pipe (45) is provided with a second air pump (47) electrically connected to the control system, and the liquid discharge pipe (46) is provided with a liquid discharge valve (48); The exhaust pipe (33) is connected to a cooling box (10), the cooling box (10) blocks the exhaust pipe (33), the cooling box (10) is provided with a sensor (11) electrically connected to a control system and used to detect the concentration of volatile organic compounds, the first solenoid valve (43) is located between the first adsorption tank (31) and the cooling box (10), the intermediate pipe (32) is provided with a third solenoid valve (12) electrically connected to the control system, the cooling box (10) and the cooling box (10) are connected to each other. A return pipe (13) is connected between the intermediate pipes (32), and the connection point between the return pipe (13) and the intermediate pipe (32) is located between the third solenoid valve (12) and the first adsorption tank (31). A third air pump (14) electrically connected to a control system is provided on the return pipe (13). A fourth air pump (15) is provided on the exhaust pipe (33) on the side of the cooling box (10) facing away from the first solenoid valve (43), and the fourth air pump (15) is electrically connected to the control system. The desorption component (35) includes a second drying tank (351), wherein a plurality of drying layers (352) are provided in the second drying tank (351), a heating tank (353) is provided on the first adsorption tank (31), and a gap is provided between the circumferential outer wall of the first adsorption tank (31) and the circumferential inner wall of the heating tank (353), the second drying tank (351) and the incineration box (41) are communicated through a fifth air pump (354), the second drying tank (351) and the heating tank (353) are communicated through a fourth solenoid valve (355), and the heating tank (353) and the cooling box (10) are communicated through a fifth solenoid valve (356), and the fifth air pump (354), the fifth solenoid valve (356) and the fourth solenoid valve (355) are all electrically connected to a control system; A vortex tube (16) is provided between the air inlet pipe (45) and the second air pump (47), the second air pump (47) is connected to the air inlet end of the vortex tube (16), the air inlet pipe (45) is connected to the hot air end of the vortex tube (16), a cooling tube (17) is connected between the cold air end of the vortex tube (16) and the first adsorption tank (31), the cooling tube (17) passes through the heating tank (353), and a sixth solenoid valve (18) electrically connected to the control system is provided on the cooling tube (17).

2. The exhaust gas treatment equipment according to claim 1, characterized in that: The drying element (7) comprises a plurality of adsorption layers (71) arranged in the first drying tank (2), wherein the plurality of adsorption layers (71) are arranged from the air inlet end to the air outlet end of the first drying tank (2).

3. The exhaust gas treatment equipment according to claim 1, characterized in that: A spiral sheet (19) is provided between the circumferential outer wall of the first adsorption tank (31) and the circumferential inner wall of the heating tank (353).

4. The exhaust gas treatment equipment according to claim 1, characterized in that: The cross section of the zeolite (34) in the first adsorption tank (31) is honeycomb-shaped.

5. A method for using the exhaust gas treatment equipment according to any one of claims 1 to 4, characterized in that: The invention comprises the following steps: S1, the control system starts the first air pump (6), the first air pump (6) draws the volatile organic compound gas in the workshop (1) to the first drying tank (2), and the drying element (7) in the first drying tank (2) adsorbs moisture in the gas; S2, the gas adsorbed in the first drying tank (2) flows to the first adsorption tank (31) through the intermediate pipe (32), the zeolite (34) in the first adsorption tank (31) adsorbs the volatile organic compound in the gas, and the remaining gas is discharged from the exhaust pipe (33); S3, the desorption component (35) desorbs the volatile organic compound adsorbed on the zeolite (34), and the incineration component (4) incinerates the volatile organic compound desorbed from the zeolite (34).

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