Organic exhaust gas treatment device and method with noble metal catalyst

Abstract

The application relates to the technical field of waste gas treatment, in particular to an organic waste gas treatment device and method with noble metal catalysts, which comprises a treatment box, a plurality of gas pipes for allowing waste gas to pass through and arranged in the treatment box, a first catalytic bed arranged in the treatment box and used for treating waste gas, a second air guide plate fixedly connected to the inside of the treatment box and used for guiding the flow of waste gas, an island plate fixedly connected to the inside of the treatment box, a second catalytic bed arranged between the island plate and the second air guide plate in the inside of the treatment box and used in parallel with the first catalytic bed, noble metal catalysts arranged on the surfaces of the first catalytic bed and the second catalytic bed, and a regeneration assembly arranged on the two sides of the treatment box and used for isolating and cleaning the first catalytic bed and the second catalytic bed; a shunt plate, a cavity is arranged in the inside of the island plate and used for placing the shunt plate and separating the shunt plate, and a circulation assembly arranged on the two sides of the treatment box and used for providing airflow transmission for the regeneration assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to an organic waste gas treatment device with noble metal catalyst and a method thereof. BACKGROUND

[0002] With the rapid development of industrialization, volatile organic compounds (Volatile Organic Compounds, VOC S ) as one of the main sources of air pollution, its emission problem is increasingly serious. VOC S not only participates in photochemical reaction to form ozone and secondary particulate matter, aggravates haze weather, but also poses a direct threat to human health (such as carcinogenic, teratogenic). Therefore, the emission standard of VOC S in industrial waste gas is becoming more and more strict, and efficient, low-consumption waste gas treatment technology has become the research focus in the field of environmental protection.

[0003] For example, the patent document with the publication number CN210584488U belongs to the technical field of waste gas treatment. The existing block catalyst has low utilization efficiency when applied to the catalytic device. In view of the problems in the prior art, the utility model discloses a block catalyst and a VOC S waste gas treatment device containing the block catalyst. The block catalyst includes a metal shell and a catalyst carrier located in the shell. The catalyst carrier is internally provided with a plurality of vertical catalytic channels. The height of the bottom of the catalytic channel is lower than the height of the bottom of the metal shell. The catalytic channel has a corrugated wall surface. The inner wall of the catalytic channel is coated with a catalyst. The waste gas treatment device includes a furnace body, a heat preservation layer, a support member, and a plurality of layers of block catalysts arranged on the support member. The patent document has a simple structure, which can improve the utilization efficiency of the block catalyst and the catalytic efficiency of the VOC S waste gas treatment device containing the block catalyst on VOC S waste gas.

[0004] Although the prior art improves the specific surface area and airflow contact efficiency of the catalyst by setting a metal shell to support the catalyst, thereby improving the catalytic activity and utilization efficiency to a certain extent, the catalyst is still inevitably deactivated due to physical and chemical factors such as carbon deposition, poisoning, sintering, or loss of active components during long-term actual operation, resulting in a continuous decrease in purification efficiency. Once the catalyst is deactivated, it must be replaced or regenerated, which not only increases the operation and maintenance cost, but also seriously affects the continuity and stability of the waste gas treatment system, making it difficult to meet the needs of industrial scenarios for efficient, durable, and uninterrupted environmental protection operation. Therefore, the present application proposes an organic waste gas treatment device with noble metal catalyst and a method thereof. SUMMARY

[0005] The present application aims to provide an organic waste gas treatment device and method with noble metal catalyst to solve the problems in the background art.

[0006] To achieve the above object, the present application provides the following technical solution: an organic waste gas treatment device with noble metal catalyst, comprising a treatment box and a plurality of gas pipes arranged in the treatment box for the waste gas to pass through, further comprising:

[0007] A first catalytic bed is arranged in the treatment box for treating the waste gas, a second gas guide plate is fixedly connected to the inside of the treatment box for guiding the flow of the waste gas, an island plate is fixedly connected to the inside of the treatment box, a second catalytic bed is arranged between the island plate and the second gas guide plate in the treatment box and used in parallel with the first catalytic bed, the surfaces of the first catalytic bed and the second catalytic bed are provided with noble metal catalysts, and a regeneration assembly is arranged on both sides of the treatment box for isolating and cleaning the first catalytic bed and the second catalytic bed;

[0008] A shunt plate is arranged in the cavity of the island plate for separating the shunt plate, a circulation assembly is arranged on both sides of the treatment box for providing gas flow for the regeneration assembly, a pressurizing groove is arranged in the cavity of the island plate for discharging gas, and an efficiency increasing assembly is arranged in the pressurizing groove for pressurizing the gas.

[0009] Preferably, the regeneration assembly comprises side frames fixedly connected to both sides of the treatment box, a sealed upper half plate is arranged on the top of the side frame and can penetrate into the inside of the treatment box, a sealed lower half plate is arranged on the bottom of the side frame and can penetrate into the inside of the treatment box, the sealed upper half plate and the sealed lower half plate penetrate into the inside of the treatment box to form a closed space between the island plate and the second gas guide plate, a connecting shaft is rotatably connected to the inside of the treatment box and connected to the second catalytic bed and the first catalytic bed, and a rotary motor is fixedly connected to one side of the treatment box for driving the connecting shaft to rotate.

[0010] Preferably, the circulation assembly comprises a gas conveying pump fixedly connected to one side of the treatment box, the output end of the gas conveying pump extends into the cavity of the island plate and is located above the shunt plate, a dust extraction pump is fixedly connected to the other side of the treatment box, the output end of the dust extraction pump extends into the cavity of the island plate and is located below the shunt plate, a gas conveying groove is arranged in the cavity of the island plate and communicates with the cavity of the island plate, the gas conveying groove communicates with the pressurizing groove, an air inlet groove is arranged in the inside of the sealed upper half plate and communicates with the pressurizing groove, a plurality of purge grooves are arranged in the bottom of the sealed upper half plate for discharging gas, a dust return groove is arranged in the inside of the island plate and communicates with the cavity of the island plate, an air return groove is arranged in the top of the sealed lower half plate and communicates with the dust return groove, and a collection groove is arranged in the top of the air return groove for air to enter.

[0011] Preferably, the synergistic assembly comprises a pressurization baffle plate arranged between the pressurizing groove and the gas conveying groove, the pressurization baffle plate is used to separate the passageway between the pressurizing groove and the gas conveying groove, the gas cylinder is fixedly connected inside the gas conveying groove, one end of the gas cylinder is slidably connected with the piston rod fixedly connected with the pressurization baffle plate, and the spring is fixedly connected inside the gas cylinder and at one end of the piston rod.

[0012] Preferably, the hammer head is further provided, one side of the island plate is rotatably connected with a flap for supporting the hammer head, one side of the flap is fixedly connected with the tension spring fixedly connected with the island plate, and the plurality of rolling balls are arranged inside the hammer head.

[0013] Preferably, the gas groove is arranged inside the island plate, the piston push rod is slidably connected inside the gas groove, one end of the piston push rod is rotatably connected with the transmission handle rotatably connected with the flap, the reset spring is arranged on the outer surface of the piston push rod for resetting itself, and the gas groove is in communication with the gas cylinder through the connecting gas groove.

[0014] Preferably, the first air guide plate is fixedly connected inside the treatment box, the burner for heating the waste gas is fixedly connected to one side of the treatment box, and the exhaust pipe for discharging the waste gas is fixedly connected to the top of the treatment box.

[0015] Preferably, the centrifugal fan for conveying the waste gas is further provided, the output end of the centrifugal fan is in communication with the waste gas inlet pipe extending above the treatment box, and the plurality of gas pipes are fixedly connected inside the first air guide plate and the second air guide plate.

[0016] Preferably, the sliding shoes are fixedly connected inside the sealing upper half plate and the sealing lower half plate, and the electric guide groove is arranged on the surface of the electric guide groove for driving the sliding shoes to move.

[0017] The application also provides an organic waste gas treatment method, comprising the following steps:

[0018] S1, carrier synthesis: tetraethoxysilane, tetrapropylammonium hydroxide, cetyltrimethylammonium bromide and water are mixed in a molar ratio of 1:(0.15-0.25):(0.10-0.20):100, hydrothermal crystallization, centrifugal washing, drying, and then calcination at 500-650℃ to obtain a porous all-silicon molecular sieve carrier with a hierarchical micro-mesoporous structure; equal volume impregnation: using an equal volume impregnation method, a chloroplatinic acid solution is loaded onto the porous all-silicon molecular sieve carrier; drying and heat treatment: the impregnated product is dried at 60-80℃, then calcined in an air atmosphere at 350-450℃, and finally reduced in a reducing atmosphere at 250-350℃ to manufacture a first catalytic bed and a second catalytic bed and install them in the treatment box;

[0019] S2, the waste gas is conveyed into the treatment box for treatment;

[0020] S3、When the first catalytic bed or the second catalytic bed is physically blocked after long-term operation, the regeneration assembly can be operated to isolate the first catalytic bed or the second catalytic bed;

[0021] S4, the first catalytic bed or the second catalytic bed is cleaned under the operation of the circulating assembly;

[0022] S5, the cooperation with the pressurizing assembly can effectively improve the cleaning strength of the circulating assembly.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] 1. The working mode of "one use and one standby" is adopted, and the automatic switching of the catalytic bed is realized by the connecting shaft driven by the rotary motor. When one catalytic bed is physically blocked or the activity is reduced due to long-term use, it can be transferred to the isolation area for maintenance, and at the same time, the other catalytic bed is immediately put into operation, which completely avoids the shutdown problem caused by replacing or regenerating the catalyst in traditional equipment, significantly improves the continuity and operation efficiency of the system, and through the collaborative movement of the sealing upper half plate and the sealing lower half plate under the drive of the sliding shoe and the electric guide groove, a closed regeneration chamber can be formed inside the treatment box, and the catalytic bed to be cleaned is completely isolated. The high-speed airflow is sprayed to the reverse side of the catalytic bed through the blowing groove, and the airflow carrying dust is collected by the collecting groove and the air return groove, filtered by the filter screen, and discharged by the dust extraction pump, forming a closed-loop cleaning system to prevent secondary pollution. The efficiency assembly converts the conventional airflow into a pulse high-pressure airflow through the mechanism of pressure accumulation to instantaneous release, significantly enhances the blowing strength, effectively removes the physical blockage such as carbon deposition and dust in the catalyst channel, and greatly improves the regeneration effect.

[0025] 2. The gas cylinder is connected with the gas groove through the gas groove, so that the reciprocating movement of the pressurized resistance plate under the action of the pulse airflow directly drives the piston push rod to move left and right in the gas groove. The piston push rod drives the flap to swing around the rotating shaft through the transmission handle, thereby driving the hammer head to periodically tap the catalytic bed (such as the first catalytic bed) in the regeneration state. The hammer head adopts a tapping design, and is limited by a tension spring to avoid strong impact that may cause the honeycomb catalyst to break or the metal carrier to deform. The vibration frequency is synchronized with the airflow pulse, the action is uniform, and the active coating of the catalyst is not damaged. The hammer head and the flap are arranged on one side of the island plate and only start to work after the catalytic bed enters the island area and is isolated by the sealing upper half plate and the sealing lower half plate. The vibration energy is enclosed in the regeneration chamber and does not affect the main airflow channel and other equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the first three-dimensional structure schematic diagram of the present application;

[0027] Figure 2 It is the second three-dimensional structure schematic diagram of the present application;

[0028] Figure 3 This is a frontal cross-sectional view of the processing box in this invention;

[0029] Figure 4 This is a top view cross-sectional structural diagram of the processing box in this invention;

[0030] Figure 5 This is a schematic cross-sectional view of the island plate in this invention;

[0031] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A;

[0032] Figure 7 This is a schematic cross-sectional view of the side frame in this invention;

[0033] Figure 8 This is a schematic cross-sectional view of the upper and lower sealing half plates in this invention.

[0034] Figure 9 This is a schematic diagram of the island plate structure in this invention;

[0035] Figure 10 This is a schematic cross-sectional view of the island plate in this invention;

[0036] Figure 11 For the present invention Figure 10 Enlarged schematic diagram of the structure at point B.

[0037] In the diagram: 100, processing box; 101, exhaust gas inlet pipe; 102, centrifugal fan; 103, first guide plate; 104, second guide plate; 105, exhaust pipe; 106, burner; 107, gas pipe; 200, first catalytic bed; 201, second catalytic bed; 202, connecting shaft; 203, rotary motor; 204, island plate; 205, side frame; 206, upper sealing plate; 207, lower sealing plate; 208, slipper; 209, electrical conductivity groove; 300, diverter plate; 301, gas pump; 3 02. Dust pump; 303. Air delivery trough; 304. Pressurization trough; 305. Dust return trough; 306. Air inlet trough; 307. Purge trough; 308. Air return trough; 309. Collection trough; 310. Filter screen; 311. Inspection port; 312. Pressurization baffle plate; 313. Air cylinder; 314. Piston rod; 315. Spring; 400. Hammer; 401. Hatch plate; 402. Ball bearing; 403. Tension spring; 404. Air trough; 405. Air connection trough; 406. Piston push rod; 407. Return spring; 408. Drive handle. Detailed Implementation

[0038] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0039] Embodiment one: please refer to Figure 1 Figure 11 The present application provides a technical solution: an organic waste gas treatment device with noble metal catalyst, comprising a treatment box 100 and a plurality of gas pipes 107 for the waste gas to pass through arranged inside the treatment box 100, a first air guide plate 103 fixedly connected inside the treatment box 100, a burner 106 fixedly connected to one side of the treatment box 100 for heating the waste gas, an exhaust pipe 105 fixedly connected to the top of the treatment box 100 for discharging the waste gas, and a centrifugal fan 102 for conveying the waste gas, the output end of the centrifugal fan 102 being communicated with a waste gas inlet pipe 101 extending above the treatment box 100, and the plurality of gas pipes 107 being fixedly connected inside the first air guide plate 103 and a second air guide plate 104, the waste gas being conveyed by operating the centrifugal fan 102 to pass through the waste gas inlet pipe 101 into the gas pipes 107, and finally flowing into the treatment box 100, the waste gas being heated by turning on the burner 106, and being guided under the action of the second air guide plate 104 and the first air guide plate 103 to flow fully in the treatment box 100, the clean high-temperature gas after treatment flowing reversely along the outer surface of the gas pipes 107 before being discharged, and performing countercurrent heat exchange with the low-temperature inlet gas in the pipes to realize heat recovery and significantly reduce energy consumption. Finally, the purified gas is discharged into the atmosphere through the exhaust pipe 105 arranged at the top.

[0040] The first catalytic bed 200 is arranged inside the treatment box 100 for treating the waste gas, the second air guide plate 104 is fixedly connected inside the treatment box 100 for guiding the flow of the waste gas, the island plate 204 is fixedly connected inside the treatment box 100, the second catalytic bed 201 is arranged inside the treatment box 100 between the island plate 204 and the second air guide plate 104 and used in parallel with the first catalytic bed 200, the surfaces of the first catalytic bed 200 and the second catalytic bed 201 are provided with noble metal catalysts, and the two sides of the treatment box 100 are provided with regeneration assemblies for isolating and cleaning the first catalytic bed 200 and the second catalytic bed 201, the first catalytic bed 200 and the second catalytic bed 201 are arranged in parallel to realize "one use and one maintenance", reduce the time for stopping and replacing the catalyst, and the regeneration assemblies can maintain the used catalyst without affecting the normal treatment of the waste gas in the treatment box 100.

[0041] ​The shunt plate 300 is arranged in the cavity of the island plate 204 to separate the cavity into an air inlet and an air outlet. The circulation assembly is arranged on both sides of the processing box 100 to continuously transport and extract the air, thereby forming a continuous air flow to clean the catalyst. The efficiency assembly is arranged in the pressurized groove 304 to pressurize the air and improve the cleaning effect.

[0042] Further, the regeneration assembly comprises side frames 205 fixedly connected to both sides of the processing box 100. The top of each side frame 205 is provided with a sealed upper half plate 206 which can penetrate into the interior of the processing box 100. The bottom of each side frame 205 is provided with a sealed lower half plate 207 which can penetrate into the interior of the processing box 100. The sealed upper half plate 206 and the sealed lower half plate 207 penetrate into the interior of the processing box 100 to form a sealed space between the island plate 204 and the second air guide plate 104. The second catalyst bed 201 and the first catalyst bed 200 are jointly connected to a connecting shaft 202 which is rotatably connected to the interior of the processing box 100. One side of the processing box 100 is fixedly connected to a rotating motor 203 for driving the connecting shaft 202 to rotate. The interior of the sealed upper half plate 206 and the sealed lower half plate 207 is fixedly connected to a sliding shoe 208. The surface of an electric guide groove 209 is provided with a driving electric guide groove 209 for moving the sliding shoe 208. The sliding shoe 208 and the electric guide groove 209 are arranged in cooperation to flexibly drive the sealed upper half plate 206 and the sealed lower half plate 207 to move into the interior of the processing box 100 to seal the space between the island plate 204 and the second air guide plate 104. The first catalyst bed 200 or the second catalyst bed 201 can be arranged between the island plate 204 and the second air guide plate 104. The movable sealed upper half plate 206 and the sealed lower half plate 207 can facilitate the first catalyst bed 200 and the second catalyst bed 201 to switch back and forth and be arranged between the island plate 204 and the second air guide plate 104.

[0043] Further, the circulating assembly comprises a gas conveying pump 301 fixedly connected to one side of the processing box 100, and the output end of the gas conveying pump 301 extends into the cavity of the island plate 204 and is located above the flow distribution plate 300; the other side of the processing box 100 is fixedly connected with a dust extraction pump 302, and the output end of the dust extraction pump 302 extends into the cavity of the island plate 204 and is located below the flow distribution plate 300; the inside of the island plate 204 is provided with a gas conveying groove 303 in communication with the cavity of the island plate 204, the gas conveying groove 303 is in communication with the pressurizing groove 304, the inside of the sealed upper half plate 206 is provided with an air inlet groove 306 in communication with the pressurizing groove 304, and the bottom of the sealed upper half plate 206 is provided with a plurality of purge grooves 307 for discharging gas; the inside of the island plate 204 is provided with a dust return groove 305 in communication with the cavity of the island plate 204, the top of the sealed lower half plate 207 is provided with a gas return groove 308 in communication with the dust return groove 305, and the top of the gas return groove 308 is provided with a collection groove 309 for the gas to enter; the gas conveying pump 301 is arranged to continuously convey the gas into the cavity of the island plate 204, so that the gas enters the inside of the gas conveying groove 303 under the guidance of the flow distribution plate 300, and finally flows into the sealed upper half plate 206 to be discharged from the top to purge the first catalytic bed 200 or the second catalytic bed 201, wherein the first catalytic bed 200 or the second catalytic bed 201 is always kept in a state of having the catalyst adhering surface facing upward when located between the island plate 204 and the second gas guide plate 104; the gas flows into the inside of the air inlet groove 306 through the pressurizing groove 304, is discharged from the purge grooves 307, enters the inside of the sealed lower half plate 207 through the collection groove 309, and finally flows into the inside of the dust return groove 305 through the gas return groove 308, so as to realize continuous gas flow; the filter screen 310 arranged in the inside of the sealed lower half plate 207 can block the cleaned particulate impurities, and the bottom of the sealed lower half plate 207 is provided with an access hole 311 which can be opened to clean the filter screen 310.

[0044] Further, the efficiency increasing assembly comprises a pressurizing resistance plate 312 arranged between the pressurizing groove 304 and the gas conveying groove 303, the pressurizing resistance plate 312 is used to separate the passageway between the pressurizing groove 304 and the gas conveying groove 303; a plurality of air cylinders 313 are fixedly connected to the inside of the gas conveying groove 303, one end of each of the air cylinders 313 is slidably connected with a piston rod 314 fixedly connected with the pressurizing resistance plate 312, and the inside of each of the air cylinders 313 is fixedly connected with a spring 315 fixedly connected with one end of the piston rod 314; the pressurizing resistance plate 312 is arranged to block the gas in the gas conveying groove 303 from entering the inside of the pressurizing groove 304, and under the continuous pressurization of the gas, the spring 315 can be overcome, and the piston rod 314 can be driven to move to press the gas in the air cylinder 313 as the gas pressure increases, so as to store the gas in the gas conveying groove 303, and finally the gas is rapidly discharged through the pressurizing groove 304 to flow into the inside of the sealed upper half plate 206.

[0045] Specifically, by opening the centrifugal fan 102 to pump the exhaust gas into the exhaust pipe 101 and then through the plurality of air pipes 107 into the inside of the processing box 100, the burner 106 is opened to preheat the exhaust gas, the preheated gas will pass through the first catalytic bed 200, which is completely oxidized and decomposed under the action of the catalyst, and then the processed exhaust gas passes through the surface of the plurality of air pipes 107 to exchange heat for the gas in the air pipe 107, and finally is discharged through the exhaust pipe 105. When the first catalytic bed 200 works for a long time to produce physical blockage, the connecting shaft 202 is rotated by operating the rotating motor 203, so that the first catalytic bed 200 enters between the island plate 204 and the second guide plate 104, and at this time the second catalytic bed 201 is located between the first guide plate 103 and the second guide plate 104. Then operate the electric guide groove 209 to drive the sliding shoe 208 to move, so that the sealing upper half plate 206 and the sealing lower half plate 207 enter the inside of the processing box 100 and then form a closed state, thereby sealing the space between the second guide plate 104 and the island plate 204. At this time, the first catalytic bed 200 located between the island plate 204 and the second guide plate 104 will stop working, and the second catalytic bed 201 will take over the exhaust gas treatment. The exhaust gas will pass through the second catalytic bed 201 when passing through the second guide plate 104 and the first guide plate 103. Simultaneously open the gas pump 301 and the dust pump 302, so that the gas is continuously pumped into the inside of the island plate 204 and then into the gas conveying groove 303, and the pressure blocking plate 312 is extruded and pressed. Under the action of gas pressure, the pressure blocking plate 312 will push the pressure blocking plate 312 over the pressure groove 304. When the pressure blocking plate 312 passes through the pressure groove 304, the gas conveying groove 303 will be communicated with the pressure groove 304 to quickly pump out the gas, thereby making the gas flow into the sealing upper half plate 206 through the gas inlet groove 306. Finally, the dust is blown off by the blow-off groove 307, and the gas flow passes through the electric guide groove 209 into the sealing lower half plate 207, and then passes through the gas return groove 308 to return to the dust return groove 305, and finally is sucked away by the dust pump 302, forming a continuous gas flow system.

[0046] In summary, the automatic switching of the catalytic bed is realized by adopting the working mode of "one use and one standby" and the connecting shaft 202 driven by the rotary motor 203. When one catalytic bed is physically blocked or its activity is reduced due to long-term use, it can be transferred to the isolation area for maintenance, while the other catalytic bed is immediately put into operation, completely avoiding the shutdown problem caused by replacing or regenerating the catalyst in traditional equipment, significantly improving the continuity and operation efficiency of the system. By the coordinated movement of the sealing upper half plate 206 and the sealing lower half plate 207 under the drive of the sliding shoe 208 and the electric guide groove 209, a closed regeneration chamber can be formed inside the treatment box 100, completely isolating the catalytic bed to be cleaned. By spraying high-speed airflow to the reverse side of the catalytic bed through the blowing groove 307, and collecting the airflow carrying dust through the collection groove 309 and the air return groove 308, and then filtering through the filter screen 310 and discharging through the dust extraction pump 302, a closed-loop cleaning system is formed to prevent secondary pollution. The efficiency assembly converts the conventional airflow into a pulsed high-pressure airflow through the mechanism of pressure accumulation and instantaneous release, significantly enhancing the blowing force and effectively removing the physical blockage such as carbon deposition and dust in the catalyst pores, greatly improving the regeneration effect.

[0047] Embodiment two: please refer to Figure 1 Figure 11 The application also provides a technical solution, which is different from the technical solution of embodiment one: an organic waste gas treatment device with a noble metal catalyst, further comprising a hammer head 400, a movable plate 401 for supporting the hammer head 400 is rotatably connected to one side of the island plate 204, a tension spring 403 is fixedly connected to one side of the movable plate 401 and fixedly connected to the island plate 204, a plurality of rolling balls 402 are arranged inside the hammer head 400, by setting the hammer head 400, the first catalytic bed 200 or the second catalytic bed 201 can be continuously hammered to be affected by the vibration force, which accelerates the falling of the attached particles, and by setting the rolling balls 402, the impact force and the transmission of the vibration force can be improved by the inertia of the rolling balls 402 when the movable plate 401 moves.

[0048] The inside of the island plate 204 is provided with a gas groove 404, a piston push rod 406 is slidably connected inside the gas groove 404, one end of the piston push rod 406 is rotatably connected with a transmission handle 408 rotatably connected with the movable plate 401, a reset spring 407 is arranged on the outer surface of the piston push rod 406 for resetting itself, the gas groove 404 is communicated with the air cylinder 313 through a connecting gas groove 405, by setting the connecting gas groove 405, the hammering action of the hammer head 400 and the movement of the pressurizing blocking plate 312 can be coordinated, the pulsed gas formed when the gas passes through the pressurizing groove 304 and the hammering of the hammer head 400 can be synchronously operated, and the cleaning effect of the catalyst can be further improved by the synchronous operation of the two actions.

[0049] ​Specifically, when the pressure blocking plate 312 is continuously reset by the gas to form a stable reciprocating motion, the gas inside the air cylinder 313 is continuously squeezed to flow between the air grooves 404, thereby driving the piston push rod 406 to reciprocate left and right, thereby continuously moving the transmission handle 408, so that the flap 401 continuously drives the hammer head 400 to lightly hammer the first catalytic bed 200 to make it vibrate, and when the flap 401 is swinging and hammering, the inertia will make the ball 402 give energy to the hammer head 400 to increase the impact force.

[0050] In summary, the air groove 405 connects the air cylinder 313 and the air groove 404, so that the reciprocating motion of the pressure blocking plate 312 under the action of the pulse gas flow directly drives the piston push rod 406 to move left and right in the air groove 404, and the piston push rod 406 drives the flap 401 to swing around the rotating shaft through the transmission handle 408, thereby driving the hammer head 400 to periodically tap the catalytic bed in the regeneration state, such as the first catalytic bed 200. The hammer head 400 adopts a tapping design, cooperates with the limiting of the tension spring 403, avoids strong impact to cause the honeycomb catalyst to break or the metal carrier to deform, the vibration frequency is synchronized with the gas flow pulse, the action is uniform, does not damage the active coating of the catalyst, the hammer head 400 and the flap 401 are arranged on one side of the island plate 204, and only after the catalytic bed enters the island area and is isolated by the sealing upper half plate 206 and the sealing lower half plate 207 Work only after starting, the vibration energy is enclosed in the regeneration chamber, which does not affect the main gas flow channel and other equipment.

[0051] Example three: please refer to Figure 1 Figure 11 The present application also provides a technical solution, which is different from the technical solution of example one: an organic waste gas treatment method, comprising the following steps:

[0052] S1, open the centrifugal fan 102 to pump the waste gas into the waste gas pipe 101, and then through a plurality of air pipes 107 to flow into the inside of the treatment box 100, open the burner 106 to preheat the waste gas, and the preheated gas will pass through the first catalytic bed 200, which is completely oxidized and decomposed under the action of the catalyst, and then the treated waste gas passes through the surface of the plurality of air pipes 107 for heat exchange for the gas in the air pipe 107, and finally discharged through the exhaust pipe 105;

[0053] ​S2, when the first catalytic bed 200 works for a long time to produce physical blockage, by operating the rotary motor 203 to drive the connecting shaft 202 to rotate, so that the first catalytic bed 200 enters between the island plate 204 and the second air guide plate 104, and at this time the second catalytic bed 201 is exposed between the first air guide plate 103 and the second air guide plate 104, then operate the electric guide groove 209 to drive the sliding shoe 208 to move, so that the sealing upper half plate 206 and the sealing lower half plate 207 enter the inside of the processing box 100 to form a closed state, thereby blocking the space between the second air guide plate 104 and the island plate 204, at this time the first catalytic bed 200 between the island plate 204 and the second air guide plate 104 will stop working, and the second catalytic bed 201 will take over to treat the exhaust gas, and the exhaust gas will pass through the second catalytic bed 201 when passing through between the second air guide plate 104 and the first air guide plate 103;

[0054] S3, synchronously open the gas conveying pump 301 and the dust extraction pump 302, so that the gas is continuously pumped into the inside of the island plate 204 and flows into the inside of the gas conveying groove 303 to press the pressurizing resistance plate 312, under the action of the gas pressure, the pressurizing resistance plate 312 will be pushed to pass through the pressurizing groove 304, and when the pressurizing resistance plate 312 passes through the pressurizing groove 304, the gas conveying groove 303 will be communicated with the pressurizing groove 304 to pump out the gas quickly, and then the gas flows into the inside of the sealing upper half plate 206 through the gas inlet groove 306, and finally is blown out through the blowing groove 307 to contact the opposite side of the first catalytic bed 200, so as to blow off the dust, and after the gas flow passes through the first catalytic bed 200, it will enter the inside of the sealing lower half plate 207 through the electric guide groove 209, and then flows back to the dust extraction groove 305 through the back gas groove 308, and finally is extracted by the dust extraction pump 302, forming a continuous gas flow system;

[0055] S4, wherein when the pressurizing resistance plate 312 is continuously pushed to reset by the gas to form a stable reciprocating motion, so as to continuously press the gas in the gas cylinder 313 to flow between the gas grooves 404, so as to drive the piston push rod 406 to move left and right reciprocally, so as to pull the transmission handle 408 to move continuously, so that the movable plate 401 continuously drives the hammer head 400 to slightly hammer the first catalytic bed 200 to make it vibrate, and when the movable plate 401 swings and hammers, the ball 402 will be energized by the hammer head 400 to increase the impact force by relying on the action of inertia;

[0056] S5, and when the second catalytic bed 201 needs to be cleaned, steps S1 to S4 are repeated to clean the second catalytic bed 201.

[0057] Embodiment four: the application also provides a technical scheme, a preparation method of a noble metal catalyst:

[0058] The catalyst ratio is: the pt loading is 1.0 g / L,

[0059] The remaining components are hierarchical porous Silicalite-1 (meso-S1, full-silica) molecular sieve support.

[0060] The preparation method of the catalyst comprises the following steps:

[0061] S1, mixing tetraethoxysilane (TEOS), tetrapropylammonium hydroxide (TPAOH), cetyltrimethylammonium bromide (CTAB) and water in a predetermined molar ratio (TEOS: TPAOH: CTAB: H2O = 1: 0.15-0.25: 0.10-0.20: 100), and crystallizing at 180°C for 48h; after crystallization is completed, calcining at 600°C for 5.5h to obtain a hierarchical S-1 support containing mesopores;

[0062] In the step S1, first, the TEOS, TPAOH, CTAB and water are fully stirred to form a uniform sol, and then transferred to a polytetrafluoroethylene-lined autoclave for crystallization at 180°C for 48h under static conditions; the crystallization product is centrifuged, washed and dried, and then calcined at 600°C for 5.5h under an air atmosphere to obtain the meso-S1 support. -1

[0063] S2, the meso-S1 support obtained in step S1 is impregnated with an equal volume of Pt: a certain amount of meso-S1 is weighed according to a Pt loading of 1.0g / L, mixed with an H2PtCl6 solution by an equal volume impregnation method, dried at 65°C, calcined at 400°C for 2h under an air atmosphere, and then reduced at 300°C for 2h under a 10%H2 / Ar atmosphere to obtain a Pt / meso-S1 catalyst;

[0064] In the step S2, the specific operation is as follows: the meso-S1 is placed in a rotary evaporating flask, and a calculated amount of H2PtCl6 aqueous solution is added dropwise while rotating and mixing to ensure uniform penetration of the solution; after impregnation, vacuum drying is performed at 65°C for 12h, and then the temperature is increased to 400°C at a rate of 5°C / min -1 , and air calcination is performed for 2h; after calcination, the temperature is increased to 300°C at a rate of 10°C / min -1 , and reduction is completed by maintaining the temperature at 300°C for 2h to obtain the Pt / meso-S1 catalyst.

[0065] In summary, the surface of the traditional γ-Al2O3 or aluminum-containing zeolite support contains Lewis or Brønsted acid sites, and these acid sites will strongly adsorb VOC S Cl - , SO4 2- ​intermediate products, leading to irreversible poisoning and deactivation of the catalyst. Silicalite-1 is a pure silica molecular sieve, with an electrically neutral framework and almost no surface acid sites, which fundamentally inhibits the strong chemical adsorption of Cl - , SO4 2- , and other poisons, endowing the catalyst with excellent resistance to halogen and sulfur poisoning and greatly extending its lifetime.

[0066] The all-silica framework makes it naturally hydrophobic (large water contact angle), which can effectively repel water molecules and prevent them from competing with VOC S molecules for adsorption on active sites. This means that the catalyst can still maintain very high activity in high humidity environments, while the performance of traditional hydrophilic catalysts will decrease dramatically.

[0067] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0068] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. An organic exhaust gas treatment device with a noble metal catalyst, comprising a treatment box (100) and a plurality of gas pipes (107) provided inside the treatment box (100) through which exhaust gas passes, characterized in that, Also include: The first catalytic bed (200) is arranged in the processing box (100) for treating exhaust gas, the inside of the processing box (100) is fixedly connected with the second air guide plate (104) for guiding the flow of exhaust gas, the inside of the processing box (100) is fixedly connected with the island plate (204), the inside of the processing box (100) and between the island plate (204) and the second air guide plate (104) is provided with the second catalytic bed (201) used in parallel with the first catalytic bed (200), the surface of the first catalytic bed (200) and the second catalytic bed (201) is provided with a noble metal catalyst, the both sides of the processing box (100) are provided with the regeneration assembly for isolating and cleaning the first catalytic bed (200) and the second catalytic bed (201); The shunt plate (300) is arranged in the cavity of the island plate (204) to separate the shunt plate (300), the both sides of the processing box (100) are provided with the circulation assembly for providing the regeneration assembly with airflow, the inside of the island plate (204) is provided with the pressurized groove (304) for discharging gas, the pressurized groove (304) is provided with the efficiency assembly for pressurizing the gas; The regeneration assembly includes the side frame (205) fixedly connected to the both sides of the processing box (100), the top of the side frame (205) is provided with the sealed upper half plate (206) which can penetrate into the inside of the processing box (100), the bottom of the side frame (205) is provided with the sealed lower half plate (207) which can penetrate into the inside of the processing box (100), and the sealed upper half plate (206) and the sealed lower half plate (207) penetrate into the inside of the processing box (100) to form a closed space between the island plate (204) and the second air guide plate (104), the second catalytic bed (201) and the first catalytic bed (200) are jointly connected with the connecting shaft (202) rotatably connected to the inside of the processing box (100), and one side of the processing box (100) is fixedly connected with the rotary motor (203) for driving the connecting shaft (202) to rotate. The circulating assembly includes a gas conveying pump (301) fixedly connected to one side of the processing box (100), and the output end of the gas conveying pump (301) extends into the cavity of the island plate (204) and is located above the flow distribution plate (300), the other side of the processing box (100) is fixedly connected with a dust extraction pump (302), the output end of the dust extraction pump (302) extends into the cavity of the island plate (204) and is located below the flow distribution plate (300), the inside of the island plate (204) is provided with a gas conveying groove (303) in communication with the cavity of the island plate (204), the gas conveying groove (303) is in communication with the pressurizing groove (304), the inside of the sealed upper half plate (206) is provided with an air inlet groove (306) in communication with the pressurizing groove (304), and the bottom of the sealed upper half plate (206) is provided with a plurality of purge grooves (307) for discharging gas, the inside of the island plate (204) is provided with a dust return groove (305) in communication with the cavity of the island plate (204), the top of the sealed lower half plate (207) is provided with a gas return groove (308) in communication with the dust return groove (305), and the top of the gas return groove (308) is provided with a collection groove (309) for gas entering. The efficiency increasing assembly includes a pressurizing resistance plate (312) arranged between the pressurizing groove (304) and the gas conveying groove (303), the pressurizing resistance plate (312) is used for blocking the channel between the pressurizing groove (304) and the gas conveying groove (303), a plurality of air cylinders (313) are fixedly connected to the inside of the gas conveying groove (303), one end of each of the plurality of air cylinders (313) is slidably connected with a piston rod (314) fixedly connected with the pressurizing resistance plate (312), and the inside of the air cylinder (313) is fixedly connected with a spring (315) fixedly connected with one end of the piston rod (314).

2. An organic exhaust gas treatment device with noble metal catalyst according to claim 1, characterized in that: Further comprising a hammer head (400), one side of the island plate (204) is rotatably connected with a flap (401) for supporting the hammer head (400), one side of the flap (401) is fixedly connected with a tension spring (403) fixedly connected with the island plate (204), and the inside of the hammer head (400) is rotatably provided with a plurality of rolling balls (402).

3. An organic exhaust gas treatment device with noble metal catalyst according to claim 2, characterized in that: The inside of the island plate (204) is provided with a gas groove (404), the inside of the gas groove (404) is slidably connected with a piston push rod (406), one end of the piston push rod (406) is rotatably connected with a transmission handle (408) rotatably connected with the flap (401), the outer surface of the piston push rod (406) is sleeved with a reset spring (407) for resetting itself, and the gas groove (404) is in communication with the air cylinder (313) through a connecting gas groove (405).

4. The organic exhaust treatment device with noble metal catalyst according to claim 1, characterized in that: The inside of the processing box (100) is fixedly connected with a first air guide plate (103), one side of the processing box (100) is fixedly connected with a burner (106) for heating waste gas, and the top of the processing box (100) is fixedly connected with an exhaust pipe (105) for discharging waste gas.

5. An organic exhaust gas treatment device with noble metal catalyst according to claim 4, characterized in that: Also include a centrifugal fan (102) for the exhaust gas delivery, the output of the centrifugal fan (102) is communicated with the exhaust gas pipe (101) extending to the processing box (100) above, and a plurality of air pipes (107) are fixedly connected in the first air guide plate (103) and the second air guide plate (104).

6. The organic exhaust treatment device with noble metal catalyst according to claim 1, characterized in that: The inside of the sealing upper half plate (206) and the sealing lower half plate (207) is fixedly connected with a sliding shoe (208), and the surface of the side frame (205) is provided with an electric guide groove (209) for driving the sliding shoe (208) to move.

7. An organic exhaust gas treatment method, characterized by using the organic exhaust gas treatment device according to any one of claims 1 to 6 with a noble metal catalyst. The method comprises the following steps: S1, carrier synthesis: tetraethoxysilane, tetrapropylammonium hydroxide, cetyltrimethylammonium bromide and water are mixed in a molar ratio of 1:(0.15-0.25):(0.10-0.20):100, hydrothermal crystallization, centrifugal washing, drying, and then calcining at 500-650℃ to obtain a porous all-silica molecular sieve carrier with a hierarchical micro-mesoporous structure; isochoric impregnation: using isochoric impregnation method, loading chloroplatinic acid solution onto the porous all-silica molecular sieve carrier; drying and heat treatment: drying the impregnated product at 60-80℃, then calcining in air atmosphere at 350-450℃, and finally reducing in reducing atmosphere at 250-350℃ to manufacture the first catalytic bed (200) and the second catalytic bed (201) and install them in the processing box (100); S2, the exhaust gas is delivered into the processing box (100) for treatment; S3, when the first catalytic bed (200) or the second catalytic bed (201) produces physical blockage after long-term work, it can be isolated by operating the regeneration assembly; S4, cleaning the first catalytic bed (200) or the second catalytic bed (201) under the operation of the circulating assembly; S5, cooperating with the booster assembly can effectively improve the cleaning intensity of the circulating assembly.

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