Waste gas treatment method of heat accumulating type oxidation furnace

Abstract

The invention relates to the field of waste gas treatment, in particular to a waste gas treatment method of a heat accumulating type oxidation furnace, which comprises the following steps: S1, waste gas primary treatment: conveying waste gas into a multi-stage permeation mechanism, and carrying out primary treatment on the waste gas by using the multi-stage permeation mechanism; s2, the waste gas is conveyed, specifically, the waste gas subjected to primary treatment is conveyed into a heat storage type oxidation furnace, and further oxidation treatment is conducted on the waste gas; and S3, exhaust of waste gas, wherein the waste gas subjected to oxidation treatment is exhausted from the heat storage type oxidation furnace. The problem that in a traditional mode, the waste gas treatment efficiency is low is solved, and the effect of improving the waste gas treatment efficiency can be achieved.

Description

Technical Field

[0001] The present application relates to the field of waste gas treatment, and in particular to a waste gas treatment method of a regenerative thermal oxidation furnace. Background Art

[0002] The regenerative thermal oxidizer is a common waste gas purification equipment in industry, and it is excellent in treating waste gas. Usually, waste gas containing organic matter will be transported to the regenerative thermal oxidizer, and the waste gas will be oxidized by the burner installed in the regenerative thermal oxidizer, so that the treated waste gas can meet the emission standards.

[0003] However, when the concentration of organic matter in the exhaust gas transported to the regenerative thermal oxidation furnace is low, direct combustion treatment will consume a lot of energy and prolong the time for exhaust gas treatment, which makes the exhaust gas treatment efficiency low and also increases a lot of operating costs. Summary of the invention

[0004] In order to improve the waste gas treatment efficiency, the present application provides a waste gas treatment method of a regenerative thermal oxidation furnace.

[0005] The present application provides a method for treating waste gas from a regenerative thermal oxidation furnace, which adopts the following technical solution: A method for treating waste gas from a regenerative thermal oxidation furnace comprises the following steps: S1. Initial treatment of waste gas: transporting waste gas to a multi-stage infiltration mechanism, and using the multi-stage infiltration mechanism to perform preliminary treatment on waste gas; S2, conveying the waste gas, conveying the preliminarily treated waste gas to the regenerative thermal oxidation furnace for further oxidation treatment of the waste gas; S3, exhausting the waste gas, and exhausting the waste gas after oxidation treatment from the regenerative thermal oxidation furnace.

[0006] By adopting the above technical scheme, the waste gas is treated by a multi-stage permeation mechanism so that the content of organic matter in the treated waste gas reaches a concentration suitable for combustion, and then the waste gas enriched with organic matter is transported to a thermal oxidation furnace to treat the waste gas, thereby reducing energy consumption and improving the waste gas treatment efficiency.

[0007] In a specific feasible implementation scheme, the S1 step also includes, S11, a primary separation treatment, wherein the exhaust gas is transported to a primary permeation component in a multi-stage permeation mechanism for pervaporation treatment, and the separated organic-rich mixed gas is transported to a regenerative oxidation furnace for oxidation treatment; the mixed gas that does not meet the emission standards after treatment by the multi-stage permeation mechanism is re-transported to the primary permeation component for circulation treatment.

[0008] By adopting the above technical solution, the exhaust gas is subjected to a primary separation treatment, so that the concentration of organic matter in the exhaust gas after separation treatment is increased, thereby facilitating the thermal storage oxidation furnace to treat the exhaust gas.

[0009] In a specific feasible implementation scheme, the step S1 also includes step S12, secondary separation treatment, wherein the mixture that does not meet the emission standards after the primary separation treatment is transported to the secondary permeation component in the multi-stage permeation mechanism, and the waste gas is subjected to secondary permeation vaporization treatment by the secondary permeation component, so that the waste gas rich in organic matter enters the regenerative thermal oxidation furnace for oxidation treatment, and the mixed gas that does not meet the emission standards after treatment is re-transported to the primary permeation component for circulation treatment, and when the mixed gas meets the emission standards after treatment, the gas mixture is discharged into the atmosphere.

[0010] By adopting the above technical scheme, in the waste gas after the first-stage separation treatment, if the mixture with a higher oxygen content has not yet reached the emission standard, the oxygen-enriched mixed gas is transported to the secondary permeation component for further separation, so that the waste gas enriched with organic matter is then transported to the regenerative oxidation furnace, and the residual mixed gas can gradually reach the emission standard.

[0011] In a specific embodiment, the temperature of the mixed gas discharged from the multi-stage permeation mechanism is between -20 degrees Celsius and 200 degrees Celsius.

[0012] In a specific embodiment, the total concentration of organic matter in the mixed gas transported to the regenerative thermal oxidizer is lower than 0-25 vol% of the lower explosion limit concentration of the mixture.

[0013] By adopting the above technical solution, the total concentration of organic matter in the mixed gas after separation treatment is lower than 0-25vol% of the lower explosion limit concentration of the mixture, thereby facilitating safe treatment of the waste gas.

[0014] In a specific possible implementation mode, the multi-stage permeation mechanism includes at least two groups of permeation components, at least two groups of the permeation components are connected through air supply pipes, and at least two groups of the permeation components are connected to the regenerative thermal oxidation furnace through pipelines.

[0015] By adopting the above technical solution, the waste gas is transported to a multi-stage permeation mechanism for separation and treatment, thereby facilitating the concentration of organic matter in the treated waste gas, thereby facilitating the subsequent thermal storage oxidation furnace to treat the waste gas, thereby improving the efficiency of waste gas treatment.

[0016] In a specific feasible implementation scheme, both ends of the air supply pipe are provided with a quick-release mechanism, and the quick-release mechanism is used to connect the air supply pipe with the infiltration component. The quick-release mechanism includes a quick-release tube, a positioning component and a sealing component. The quick-release tube is installed on the infiltration component, the positioning component is installed on the air supply pipe, and the positioning component is used to connect the quick-release tube with the air supply pipe, the sealing component is installed on the air supply pipe, and the sealing component is connected to the quick-release tube.

[0017] By adopting the above technical solution, when adding infiltration components or adjusting the position of infiltration components according to site requirements, the quick installation or quick disassembly between infiltration components can be conveniently achieved through the quick release mechanism.

[0018] In a specific feasible implementation scheme, the positioning assembly includes a positioning hook, a push block, a connecting rod, a positioning ring and a connecting ring, the positioning hook is rotatably installed in the air supply pipe, and one end of the positioning hook is used to be plugged into the quick-release tube, the quick-release tube is provided with a positioning groove for plugging one end of the positioning hook, and a reset spring is also installed in the air supply pipe, one end of the reset spring is connected to the air supply pipe, and the other end is connected to the positioning hook, the pushing block is installed on the air supply pipe, and one end of the pushing block is in conflict with the side wall of the positioning hook, and the other end of the pushing block is used to be connected to the quick-release tube, the connecting rod is installed on the side wall of the air supply pipe, and one end of the connecting rod is connected to the push block, and the other end passes through the outer wall of the air supply pipe and extends outward, the connecting ring is installed on the outer wall of the air supply pipe, and the connecting ring is connected to the connecting rod, the positioning ring is threadedly installed on the outer wall of the air supply pipe, and the positioning ring is slidably connected to the connecting ring.

[0019] By adopting the above technical solution, during installation, the air supply pipe is connected to the quick-release pipe and the quick-release pipe is inserted into the air supply pipe, so that the end of the quick-release pipe abuts against the push block, and the push block is pushed into the inner wall of the air supply pipe, so that the push block abuts against the positioning hook, so that the positioning hook compresses the reset spring sheet, and the other end of the positioning hook extends out of the inner wall of the air supply pipe and is inserted into the positioning groove of the quick-release pipe, so that the quick-release pipe is positioned on the air supply pipe, thereby facilitating the stability of the connection between the quick-release pipe and the air supply pipe.

[0020] In a specific feasible implementation scheme, the sealing assembly includes a sealing plate, a sealing rod, a sealing spring and a push rod. A sealing ring is installed on the inner wall of the air supply pipe, and the sealing ring is provided with a sealing bevel. The sealing plate is installed in the air supply pipe, and the side wall of the sealing plate is in contact with the sealing bevel. The sealing rod is installed in the air supply pipe, and one end of the sealing rod is connected to the sealing plate. The sealing spring is installed on the sealing rod, and one end of the sealing spring is connected to the sealing rod, and the other end is connected to the sealing plate. The push rod is installed in the quick-release tube, and the push rod is used to resist the sealing rod.

[0021] By adopting the above technical solution, when the air supply pipe is connected to the quick-release pipe, the push rod in the quick-release pipe contacts the sealing rod, thereby pushing the sealing rod into the air supply pipe, so that the sealing rod compresses the sealing spring and drives the sealing plate to separate from the sealing ring, thereby opening the air supply pipe and facilitating the circulation of gas.

[0022] In a specific possible implementation scheme, a butterfly valve is also installed on the quick-release pipe, and the butterfly valve is used to control the opening and closing of the quick-release pipe.

[0023] By adopting the above technical solution, after the various permeation components are connected to each other, the on-off between the various permeation components can be controlled by setting a butterfly valve, so that the number of permeation components used can be adjusted according to needs.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. The present application sets up a multi-stage infiltration mechanism to facilitate the pre-treatment of the waste gas through the multi-stage infiltration mechanism, thereby increasing the concentration of organic matter in the waste gas, so that the subsequent waste gas can be fully burned and oxidized after being transported to the regenerative thermal oxidation furnace, thereby facilitating improving the waste gas treatment efficiency.

[0025] 2. The present application provides a quick-release mechanism, thereby facilitating the addition and removal of various infiltration components in a multi-stage infiltration mechanism through the quick-release mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the exhaust gas treatment device of the regenerative thermal oxidation furnace in the embodiment of the present application.

[0027] Figure 2 It is a structural schematic diagram of the multi-stage infiltration mechanism in an embodiment of the present application.

[0028] Figure 3 It is a structural schematic diagram of the quick release mechanism in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the quick-release tube and the air supply tube being separated in an embodiment of the present application.

[0030] Description of reference numerals: 1. Multi-stage penetration mechanism; 11. Primary penetration assembly; 12. Secondary penetration assembly; 13. Tertiary penetration assembly; 14. Air supply pipe; 141. Mounting slot; 142. Connecting slot; 15. Reflux pipe; 16. Penetration box; 2. Quick-release mechanism; 21. Quick-release pipe; 211. Positioning slot; 212. Buffer slot; 22. Positioning assembly; 221. Positioning hook; 222. Push block; 223. Connecting rod; 224. Positioning ring; 225. Connecting ring; 226. Reset spring; 23. Sealing assembly; 231. Sealing plate; 232. Sealing rod; 233. Sealing spring; 234. Push rod; 235. Bracket; 236. Baffle; 237. Sealing ring; 3. Butterfly valve; 4. Regenerative thermal oxidation furnace. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The present application discloses a method for treating waste gas from a regenerative thermal oxidation furnace, comprising the following steps: S1. Initial treatment of waste gas: transport the waste gas to the multi-stage permeation mechanism 1, and use the first-stage permeation component 11, the second-stage permeation component 12, the third-stage permeation component 13 and several permeation components in the multi-stage permeation mechanism 1 to perform preliminary treatment on the waste gas, so as to separate the organic matter in the waste gas, and transport the waste gas rich in organic matter to the regenerative thermal oxidation furnace 4.

[0033] Typically, the organic matter in the exhaust gas is mainly composed of any one or more of ethanol, ethyl acetate, methyl acetate, cyclobutane, toluene, xylene, cyclopentane, cyclohexane, n-propanol, maleic anhydride, and fumaric anhydride. The primary permeation component 11, the secondary permeation component 12, the tertiary permeation component 13, and several permeation components all use pervaporation membranes for separation. The membrane type of the selected pervaporation membrane is at least one of a tubular membrane, a hollow fiber membrane, a flat membrane, and a roll membrane. The specific pervaporation membrane may be a silicone rubber polymer membrane or a polyether block amide polymer membrane or a graphene or graphene oxide membrane. The separation temperature of the pervaporation membrane is -20~200 °C, the relative pressure range of the interception side of the pervaporation membrane is 0-3 atm, and the pressure range of the permeation side of the pervaporation membrane is 500-50000 Pa. The pervaporation membrane and the separation treatment of the exhaust gas by the pervaporation membrane are prior arts in the art and will not be elaborated here.

[0034] During the separation process, the amount on the permeation side of the pervaporation membrane is 5%-25% of the input exhaust gas mass flow rate, and in the embodiment of the present application it is 5%-15%. The oxygen content in the mixed gas on the retentate side of the pervaporation membrane is 6-21 vol%, and in the present embodiment it is 12 vol-21 vol%. The total concentration of organic matter in the mixed gas on the permeation side of the pervaporation membrane is lower than the lower explosion limit (LEL) concentration of the mixture by 0-25 vol%, and in the present embodiment it is 5-12 vol%.

[0035] S11, primary separation treatment, by conveying the waste gas to the multi-stage permeation mechanism 1, so that the waste gas enters the primary permeation component 11 in the multi-stage permeation mechanism 1, and the primary permeation component 11 performs pervaporation treatment on the waste gas, so that the waste gas mixture rich in organic matter enters the permeation side of the pervaporation membrane, and is conveyed to the regenerative thermal oxidation furnace 4 for oxidation treatment, so that the oxygen-rich mixture enters the interception side of the pervaporation membrane, and the mixture on the interception side is analyzed and detected, and when the concentration reaches the emission standard, the mixture on the interception side is discharged into the atmosphere. The emission standard is the prior art in the art and will not be elaborated here; S12, secondary separation treatment, when the mixture on the retention side of the primary permeation component 11 does not meet the emission standard, the mixture on the retention side of the primary permeation component 11 is transported to the secondary permeation component 12 in the multi-stage permeation mechanism 1, and the waste gas is subjected to secondary permeation vaporization treatment by the secondary permeation component 12, so that the waste gas rich in organic matter enters the permeation side of the permeation vaporization membrane, and is transported to the regenerative thermal oxidation furnace 4 for oxidation treatment, so that the oxygen-rich mixture enters the retention side of the permeation vaporization membrane, and the mixture on the retention side is detected and analyzed again. When the mixture on the retention side meets the emission standard, the mixture on the retention side is discharged into the atmosphere.

[0036] S13, three-stage separation treatment. When the mixture on the interception side of the secondary permeation component 12 does not meet the emission standard, the mixture on the interception side of the secondary permeation component 12 is transported to the three-stage permeation component 13 in the multi-stage permeation mechanism 1, and the waste gas is once again subjected to permeation vaporization separation treatment through the third permeation component, so that the waste gas rich in organic matter enters the permeation side of the permeation vaporization membrane and is transported to the regenerative thermal oxidation furnace 4 for oxidation treatment, so that the oxygen-rich mixture enters the interception side of the permeation vaporization membrane, and the mixture on the interception side is detected and analyzed again. When the mixture on the interception side meets the emission standard, the mixture on the interception side is discharged into the atmosphere. When the mixture on the interception side does not meet the emission standard, it is once again transported to the next-level permeation component for treatment, or according to the concentration of organic matter in the mixture, the waste gas is re-transported to the aforementioned permeation component for cyclic separation until the waste gas meets the emission standard and is discharged into the atmosphere.

[0037] S2, conveying the waste gas, conveying the preliminarily treated waste gas to the regenerative thermal oxidation furnace 4, and further subjecting the waste gas to high-temperature oxidation treatment by the burner in the regenerative thermal oxidation furnace 4, so that the waste gas meets the emission standards; S3, exhausting waste gas: extracting the waste gas after oxidation treatment from the regenerative thermal oxidation furnace 4 through an external fan and discharging it to the next process or into the atmosphere.

[0038] Reference Figure 1 and Figure 2 The embodiment of the present application also discloses a waste gas treatment device of a regenerative thermal oxidation furnace, including a multi-stage permeation mechanism 1 and a regenerative thermal oxidation furnace 4, wherein the regenerative thermal oxidation furnace 4 is arranged on one side of the multi-stage permeation mechanism 1, and the regenerative thermal oxidation furnace 4 is connected to the multi-stage permeation mechanism 1 through a pipeline.

[0039] Reference Figure 1 and Figure 2 The multi-stage permeation mechanism 1 includes several groups of permeation components. In the embodiment of the present application, three groups of permeation components are described. The three groups of permeation components are arranged in the order of the exhaust gas being fed in, and are the first-stage permeation component 11, the second-stage permeation component 12 and the third-stage permeation component 13. The three groups of permeation components have the same structure and all include a permeation box 16 and a pervaporation membrane (not shown in the figure). The pervaporation membrane is detachably installed in the permeation box 16, and the pervaporation membrane divides the internal space of the permeation box 16 into two parts, wherein the space on one side of the pervaporation membrane in the permeation box 16 is the interception side (not shown in the figure), and the space on the other side of the pervaporation membrane in the permeation box 16 is the permeation side (not shown in the figure). The permeation side in the permeation box 16 in each group of permeation components is connected to the thermal storage oxidation system through a delivery pipe. The air inlet end of the furnace 4 is connected, the interception side of the permeation box 16 in the primary permeation component 11 is connected to the gas source of the external exhaust gas through an air inlet pipe, and the interception side of the permeation box 16 in the primary permeation component 11 is also connected to the interception side of the permeation box 16 in the secondary permeation component 12 through an air supply pipe 14, the interception side of the permeation box 16 in the secondary permeation component 12 is also connected to the interception side of the permeation box 16 in the tertiary permeation component 13 through an air supply pipe 14, the interception side of the permeation box 16 in the tertiary permeation component 13 is also connected to the interception side of the permeation box 16 in the primary permeation component 11 and the interception side of the permeation box 16 in the secondary permeation component 12 through two reflux pipes 15 respectively, and the permeation side of the permeation box 16 in the tertiary permeation component 13 is also connected to the external atmosphere through an exhaust pipe.

[0040] Reference Figure 2 and Figure 3In order to facilitate the series connection of more infiltration components, quick-release mechanisms 2 are installed at both ends of the air supply pipe 14 and both ends of the return pipe 15. The quick-release mechanism 2 on the air supply pipe 14 is taken as an example for explanation. The quick-release mechanism 2 includes a quick-release tube 21, a positioning assembly 22 and a sealing assembly 23. One end of the quick-release tube 21 is installed on the side wall of the retention side of the infiltration box 16, and the quick-release tube 21 is connected to the retention side in the infiltration box 16. The other end of the quick-release tube 21 is used to be plugged into the air supply pipe 14. The positioning assembly 22 includes a positioning hook 221, a push block 222, a connecting rod 223, a positioning ring 224 and a connecting ring 225. A mounting groove 141 is provided in the side wall of the end of the air supply pipe 14, and the mounting groove 141 is arranged along the axial direction of the air supply pipe 14. The positioning hook 221 is rotatably installed in the mounting groove 141, and one end of the positioning hook 221 close to the end of the air supply pipe 14 is bent toward the axial direction of the air supply pipe 14. A positioning groove 211 for the bent part of the positioning hook 221 to be engaged is provided on the outer wall of the quick-release tube 21. A reset spring piece 226 is also provided at one end of the mounting groove 141 located away from the bent part of the positioning hook 221. The reset spring piece 226 is located between the positioning hook 221 and the side wall of the mounting groove 141, and one end of the reset spring piece 226 is fixedly connected to the side wall of the mounting groove 141, and the other end conflicts with the side wall of one end of the positioning hook 221 away from the bent part of the positioning hook 221.

[0041] Reference Figure 3 and Figure 4 The push block 222 is slidably installed on the inner side wall of the air supply pipe 14 along the axial direction perpendicular to the air supply pipe 14, and the push block 222 is located on the inner wall of the air supply pipe 14 near the reset spring piece 226. A slide groove for the push block 222 to slide is provided on the inner wall of the air supply pipe 14, and the slide groove is connected to the mounting groove 141, and the width of the slide groove is greater than the width of the mounting groove 141. One end of the push block 222 is located in the slide groove and is used to contact the side wall of one end of the positioning hook 221 near the reset spring piece 226, and the other end of the push block 222 extends out of the slide groove, and the push block 222 is provided on the inner wall of the air supply pipe 14. A guide slope is provided at one end of the block 222 away from the positioning hook 221, and the guide slope extends obliquely from the top wall of the bent portion of the push block 222 close to the positioning hook 221 toward the direction of the bent portion away from the positioning hook 221 to the end of the push block 222, and the guide slope is used to contact the end of the quick-release tube 21. The outer side wall of the end of the quick-release tube 21 is also provided with a buffer groove 212, and the buffer groove 212 extends from the end of the quick-release tube 21 along the axial direction of the quick-release tube 21 to the direction of the penetration box 16, and the buffer groove 212 is used for the push block 222 to slide.

[0042] Reference Figure 3 and Figure 4A connecting groove 142 is provided on the outer wall of the air supply pipe 14, and the connecting rod 223 is L-shaped and slidably installed in the connecting groove 142. One end of the connecting rod 223 is located in the connecting groove 142 and extends out of the connecting groove 142 along a direction perpendicular to the axis of the air supply pipe 14. The other end of the connecting rod 223 is also located in the connecting groove 142 and extends into the slide groove along a direction parallel to the axis of the air supply pipe 14. The end of the connecting rod 223 located in the slide groove is slidably connected to the side wall of the push block 222 away from the guide slope. The connecting ring 225 is slidably installed on the outer wall of the air supply pipe 14 along the axis of the air supply pipe 14, and the inner side wall of the connecting ring 225 is fixedly connected to the end of the connecting rod 223 located outside the connecting groove 142. The positioning ring 224 is threadedly mounted on the outer wall of the air supply pipe 14 , and the positioning ring 224 is located between the connecting ring 225 and the end of the air supply pipe 14 , and the positioning ring 224 is also slidably connected to the connecting ring 225 .

[0043] Reference Figure 3 and Figure 4 , by connecting the air supply pipe 14 with the quick-release pipe 21, one end of the quick-release pipe 21 is inserted into the air supply pipe 14, so that the outer wall of the quick-release pipe 21 slides along the inner wall of the air supply pipe 14, and one end of the push block 222 slides along the side wall of the buffer groove 212. When the quick-release pipe 21 is inserted until the guide inclined surface on the push block 222 contacts the groove top wall of the buffer groove 212, the push block 222 is pushed into the slide groove by the quick-release pipe 21, so that the push rod contacts the positioning hook 221, thereby driving the positioning hook 221 to rotate, and the positioning hook 221 compresses the reset spring sheet 226, so that the end of the positioning hook 221 away from the reset spring sheet 226 rotates toward the direction of the quick-release pipe 21 and is inserted into the positioning groove 211 on the quick-release pipe 21, so that the positioning hook 221 is engaged with the positioning groove 211 on the quick-release pipe 21, thereby positioning the quick-release pipe 21 on the air supply pipe 14.

[0044] Reference Figure 3 and Figure 4When it is necessary to disassemble the air supply pipe 14, the positioning ring 224 is rotated to move the positioning ring 224 in the direction away from the end of the air supply pipe 14, thereby driving the connecting ring 225 to move, so that the connecting ring 225 drives the push block 222 to move in the direction away from the bending part of the positioning hook 221 through the connecting rod 223, so that the push block 222 slides along the side wall of the positioning hook 221, and the end of the push block 222 away from the positioning hook 221 is moved back to the buffer groove 212, so that the positioning hook 221 pushes the push block 222 into the buffer groove 212 under the action of the reset spring piece 226, so that the push block 222 is inserted into the buffer groove 212, so that the bending part of the positioning hook 221 is rotated in the direction away from the air supply pipe 14, and the positioning hook 221 is separated from the positioning groove 211 of the air supply pipe 14, thereby releasing the positioning of the quick-release pipe 21, thereby facilitating the separation of the quick-release pipe 21 and the air supply pipe 14.

[0045] Reference Figure 3 and Figure 4 The sealing assembly 23 includes a sealing plate 231, a sealing rod 232, a sealing spring 233 and a push rod 234. A sealing ring 237 is also fixedly mounted on the inner wall of the air supply pipe 14. The sealing ring 237 is integrally formed with the air supply pipe 14, and the diameter of the inner ring of the sealing ring 237 is smaller than the inner diameter of the air supply pipe 14. A sealing slope is provided at one end of the sealing ring 237 away from the end of the air supply pipe 14. One end of the sealing slope is located on the side wall of the inner ring of the sealing ring 237, and the other end of the sealing slope extends in a direction away from the end of the air supply pipe 14 and is inclined in a direction toward the inner wall of the air supply pipe 14. The cross section of the sealing plate 231 is an isosceles trapezoid, and the hypotenuse of the isosceles trapezoid is used to fit with the sealing slope, and the height of the sealing plate 231 is less than the height of the sealing ring 237. The sealing rod 232 is fixedly installed on the side wall of the sealing plate 231 on one side close to the end of the air supply pipe 14 along the axial direction of the air supply pipe 14, and a bracket 235 is also fixedly installed on the inner wall of the air supply pipe 14. The sealing rod 232 is slidably connected to the bracket 235, and a baffle 236 is fixedly installed on the end of the sealing rod 232 away from the sealing plate 231. The sealing spring 233 is installed on the sealing rod 232, and one end of the sealing spring 233 is in contact with the bracket 235, and the other end is in contact with the side wall of the baffle 236.

[0046] Reference Figure 3 and Figure 4 The push rod 234 is fixedly mounted on the inner wall of the quick-release tube 21 , and the push rod 234 is coaxial with the sealing rod 232 , and the push rod 234 is used to abut against the baffle 236 on the sealing rod 232 .

[0047] Reference Figure 3 and Figure 4When the quick-release tube 21 is inserted into the air supply tube 14, the push rod 234 contacts the baffle 236, thereby pushing the baffle 236 away from the push rod 234, so that the baffle 236 pushes the sealing plate 231 away from the bracket 235 through the sealing rod 232, and the baffle 236 compresses the sealing spring 233, so that the sealing plate 231 is separated from the sealing ring 237, thereby opening the air supply tube 14, so that the gas from the quick-release tube 21 enters the air supply tube 14. When the quick-release tube 21 is separated from the air supply tube 14, the baffle 236 is reset under the action of the sealing spring 233, thereby driving the sealing rod 232 and the sealing plate 231 to move, so that the sealing plate 231 moves toward the bracket 235, so that the peripheral side wall of the sealing plate 231 contacts the sealing inclined surface of the sealing ring 237, thereby closing the air supply tube 14.

[0048] Reference Figure 1 and Figure 2 A butterfly valve 3 is also installed on the end of the quick-release tube 21 away from the air supply tube 14. The butterfly valve 3 is used to close or open the quick-release tube 21. The butterfly valve 3 is a prior art in this field and will not be described in detail here.

[0049] Reference Figure 1 A fan is also provided at the output end of the regenerative thermal oxidation furnace 4. The fan is used to lead the gas mixture in the regenerative thermal oxidation furnace 4 into the atmosphere. The fan is a prior art in this field and will not be described in detail here.

[0050] The working principle of the embodiment of the present application is: by conveying the exhaust gas to the multi-stage permeation mechanism 1 for pervaporation treatment, the mixed gas rich in organic matter is conveyed to the regenerative thermal oxidation furnace 4 for oxidation treatment, and the treated gas is discharged into the atmosphere.

[0051] When the number of infiltration components in the multi-stage infiltration mechanism 1 needs to be further increased, the infiltration box 16 in the newly added infiltration component is connected to the infiltration box 16 in the original infiltration component through the air supply pipe 14 through the quick release mechanism 2, thereby realizing the communication between multiple groups of infiltration components, so as to facilitate the separation and treatment of exhaust gas. When the number of infiltration components needs to be reduced, the air supply pipe 14 is separated from the infiltration box 16 through the quick release mechanism 2, thereby realizing the separation between the infiltration boxes 16 and the infiltration boxes 16, thereby realizing the adjustment of the number of infiltration components.

[0052] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for treating waste gas from a regenerative thermal oxidation furnace (4), characterized in that: The following steps are included: S1, initial treatment of waste gas, transporting the waste gas to the multi-stage permeation mechanism (1), and using the multi-stage permeation mechanism (1) to perform preliminary treatment on the waste gas; S2, conveying the waste gas, conveying the preliminarily treated waste gas to the regenerative thermal oxidation furnace (4), and subjecting the waste gas to further oxidation treatment; S3, exhausting the waste gas, and exhausting the waste gas after oxidation treatment from the regenerative thermal oxidation furnace (4).

2. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 1, characterized in that: The step S1 also includes, S11, a primary separation treatment, wherein the waste gas is transported to the primary permeation component (11) in the multi-stage permeation mechanism (1) for pervaporation treatment, and the organic-rich mixed gas after separation is transported to the regenerative thermal oxidation furnace (4) for oxidation treatment; and the mixed gas that does not meet the emission standards after being treated by the multi-stage permeation mechanism (1) is transported back to the primary permeation component (11) for circulation treatment.

3. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 2, characterized in that: In step S1, The method comprises step S12, a secondary separation treatment, wherein the mixture that does not meet the emission standard after the primary separation treatment is transported to the secondary permeation component (12) in the multi-stage permeation mechanism (1), and the waste gas is subjected to secondary permeation vaporization treatment by the secondary permeation component (12), so that the waste gas rich in organic matter enters the regenerative thermal oxidation furnace (4) for oxidation treatment, and the mixed gas that does not meet the emission standard after treatment is transported back to the primary permeation component (11) for circulation treatment, and when the mixed gas meets the emission standard after treatment, the gas mixture is discharged into the atmosphere.

4. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 1, characterized in that: The temperature of the mixed gas discharged from the multi-stage permeation mechanism (1) is between -20 degrees Celsius and 200 degrees Celsius.

5. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 1, characterized in that: The total concentration of organic matter in the mixed gas transported to the regenerative thermal oxidation furnace (4) is lower than 0-25 vol% of the lower explosion limit concentration of the mixture.

6. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 1, characterized in that: The multi-stage permeation mechanism (1) comprises at least two groups of permeation components, the at least two groups of permeation components are connected via an air supply pipe (14), and the at least two groups of permeation components are connected to the regenerative thermal oxidation furnace (4) via a pipeline.

7. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 6, characterized in that: Both ends of the air supply pipe (14) are provided with a quick-release mechanism (2), and the quick-release mechanism (2) is used to connect the air supply pipe (14) with the infiltration component. The quick-release mechanism (2) comprises a quick-release pipe (21), a positioning component (22) and a sealing component (23). The quick-release pipe (21) is installed on the infiltration component, the positioning component (22) is installed on the air supply pipe (14), and the positioning component (22) is used to connect the quick-release pipe (21) with the air supply pipe (14), and the sealing component (23) is installed on the air supply pipe (14), and the sealing component (23) is connected to the quick-release pipe (21).

8. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 7, characterized in that: The positioning assembly (22) comprises a positioning hook (221), a push block (222), a connecting rod (223), a positioning ring (224) and a connecting ring (225); the positioning hook (221) is rotatably mounted in the air supply pipe (14); one end of the positioning hook (221) is used to be plugged into the quick-release pipe (21); the quick-release pipe (21) is provided with a positioning groove (211) for plugging one end of the positioning hook (221); a reset spring sheet (226) is further mounted in the air supply pipe (14); one end of the reset spring sheet (226) is connected to the air supply pipe (14), and the other end is connected to the positioning hook (221); the push block (222) is mounted on the air supply pipe (14) The push block (222) is mounted on the side wall of the air supply pipe (14), and one end of the push block (222) is in contact with the side wall of the positioning hook (221); the other end of the push block (222) is used to be connected to the quick-release tube (21); the connecting rod (223) is mounted on the side wall of the air supply pipe (14), and one end of the connecting rod (223) is connected to the push block (222), and the other end passes through the outer wall of the air supply pipe (14) and extends outward; the connecting ring (225) is mounted on the outer wall of the air supply pipe (14), and the connecting ring (225) is connected to the connecting rod (223); the positioning ring (224) is threadedly mounted on the outer wall of the air supply pipe (14), and the positioning ring (224) is slidably connected to the connecting ring (225).

9. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 7, characterized in that: The sealing assembly (23) comprises a sealing plate (231), a sealing rod (232), a sealing spring (233) and a push rod (234); a sealing ring (237) is installed on the inner wall of the air supply pipe (14); a sealing bevel is provided on the sealing ring (237); the sealing plate (231) is installed in the air supply pipe (14), and the side wall of the sealing plate (231) is in contact with the sealing bevel; the sealing rod (232) is installed in the air supply pipe (14), and one end of the sealing rod (232) is connected to the sealing plate (231); the sealing spring (233) is installed on the sealing rod (232), and one end of the sealing spring (233) is connected to the sealing rod (232), and the other end is connected to the sealing plate (231); the push rod (234) is installed in the quick-release tube (21), and the push rod (234) is used to resist the sealing rod (232).

10. The method for treating waste gas from a regenerative thermal oxidation furnace (4) according to claim 7, characterized in that: A butterfly valve (3) is also installed on the quick-release tube (21), and the butterfly valve (3) is used to control the opening and closing of the quick-release tube (21).

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