A triple-effect catalytic converter for rare earth processing waste gas

Abstract

This invention relates to the field of waste gas separation and treatment technology, specifically to a three-way catalytic converter for rare earth processing, comprising a first catalytic cylinder, a second catalytic cylinder, and a sedimentation tail chamber. Waste gas is sequentially processed through the first catalytic cylinder, the second catalytic cylinder, and the sedimentation tail chamber. The first catalytic cylinder contains a first catalyst honeycomb ceramic, and the second catalytic cylinder contains a second catalyst honeycomb ceramic. This invention's three-way catalytic converter can effectively purify three types of waste gas generated during rare earth processing, thereby reducing gaseous pollution generated during rare earth processing.

Description

Technical Field

[0001] This invention relates to the field of waste gas separation and treatment technology, specifically to a three-way catalytic converter for rare earth waste gas treatment. Background Technology

[0002] During rare earth processing, especially when processing bastnaesite using the sulfuric acid roasting method, hydrogen fluoride is produced. sulfur dioxide and carbon monoxide These three types of harmful waste gases originate from acidic gases and unreacted sulfuric acid vapors volatilized during the reaction of concentrated sulfuric acid with rare earth concentrate, especially when the reaction is intense at low temperatures. Existing technologies lack specialized catalytic treatment devices for these three types of waste gases, and they can only be treated together in other gas purification systems. This is not suitable for low-cost specialized processing. As environmental protection requirements increase, it is necessary to reduce the pollution generated during rare earth processing. Summary of the Invention

[0003] The purpose of this invention is to provide a three-way catalytic converter for rare earth processing waste gas to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a three-way catalytic converter for rare earth processing waste gas, comprising a first catalytic cylinder, a second catalytic cylinder, and a sedimentation tail chamber, wherein the waste gas is processed sequentially through the first catalytic cylinder, the second catalytic cylinder, and the sedimentation tail chamber;

[0005] The first catalyst cartridge is equipped with a surface with... The first catalyst is a honeycomb ceramic, and the second catalyst cartridge contains a surface coated with... The second catalyst of the catalyst is a honeycomb ceramic;

[0006] When the exhaust gas passes through the first catalyst honeycomb ceramic at 200-300℃, the exhaust gas contains... It will be catalyzed by the first catalyst, honeycomb ceramic, to react with oxygen to produce ;

[0007] When the exhaust gas passes through the second catalyst honeycomb ceramic at 300-400℃, the exhaust gas contains... It will be catalyzed by the second catalyst, honeycomb ceramic, to react with oxygen to produce ;

[0008] The sedimentation tailings chamber is filled with an alkaline solution. and in the exhaust gas It enters the sedimentation tailings tank and reacts with the alkaline solution there to form precipitate, thus achieving separation;

[0009] Heating rods are inserted into the pores of both the first and second catalyst honeycomb ceramics, and the heating rods are used to control the temperature of the gas.

[0010] A ceramic synchronous substrate is fixedly provided at the end of the heating rod. The ceramic synchronous substrate is used to support the heating rod and provide power supply. An elastic support is installed on the ceramic synchronous substrate. The elastic support provides elastic support to the ceramic synchronous substrate, so that the ceramic synchronous substrate can be driven by external force to vibrate, and thus drive the heating rod to vibrate.

[0011] An intermediate shaft is fixed between the ceramic synchronous substrates correspondingly arranged in the first catalytic cylinder and the ceramic synchronous substrates correspondingly arranged in the second catalytic cylinder.

[0012] Fixed shaft seats are fixedly installed on the side walls of the first and second catalyst cylinders respectively. The intermediate shaft passes through the fixed shaft seats. A vertical plate is fixedly installed on the intermediate shaft. A horizontal limiting plate is fixedly installed on the vertical plate. A limiting groove is provided on the outside of the horizontal limiting plate. The limiting groove slides and limits the horizontal limiting plate, so that the horizontal limiting plate and the vertical plate can only move along the axial direction of the intermediate shaft.

[0013] A vibrating pusher is provided on one side of the vertical plate, and a vibrating protrusion is provided on the vibrating pusher. When the vibrating pusher rotates, the vibrating pusher intermittently presses against the vertical plate through the vibrating protrusion, causing the vertical plate to move along the axial direction of the intermediate shaft. In conjunction with the supporting elastic force of the elastic support member, the intermediate shaft and the ceramic synchronous substrate are in a vibrating state.

[0014] A rubber sealing cover is provided between the vertical plate and the fixed shaft seat for sealing connection. The vertical plate is provided with a frustum portion, and a frustum cavity is opened inside the frustum portion. A mating piston is provided in the frustum cavity. The mating piston is in sealed contact with the frustum cavity. The mating piston is fixedly installed with the first catalytic cylinder. When the vertical plate moves, the mating piston moves relative to the vertical plate.

[0015] The vertical plate is provided with an air intake channel and an exhaust channel;

[0016] One end of the air intake channel is connected to the inner cavity of the frustum cavity, and the other end is connected to the outside atmosphere;

[0017] One end of the exhaust channel is connected to the inner cavity of the frustum cavity, and the other end is connected to the inside of the rubber sealing cover;

[0018] An intake check valve is provided in the intake channel, which allows gas from the outside atmosphere to flow unidirectionally into the frustum cavity; an exhaust check valve is provided in the exhaust channel, which allows gas from the frustum cavity to flow unidirectionally into the rubber sealing cover.

[0019] The first catalytic cylinder, the second catalytic cylinder, and the sedimentation tail chamber are all equipped with an equipment housing. The equipment housing provides shielding and protection for the first catalytic cylinder, the second catalytic cylinder, and the sedimentation tail chamber. The surface of the equipment housing is provided with a through-hole for ventilation.

[0020] The upper part of the first catalytic cylinder is connected to an exhaust gas inlet pipe, and a pre-filter section that can be separated and disassembled is provided on the exhaust gas inlet pipe. The pre-filter section is provided with a separation filter element, which filters dust from the gas flowing through the exhaust gas inlet pipe.

[0021] The upper part of the second catalytic cylinder is connected to a receiving pipe, the other end of which is connected to the bottom of the first catalytic cylinder, and the bottom of the second catalytic cylinder is connected to a catalytic tail pipe.

[0022] The sedimentation tail chamber has an internal cavity with a clamping wall, and the catalytic tail pipe is connected to the internal cavity with the clamping wall.

[0023] A right-angle air blowing pipe is connected to the upper part of the inner cavity of the clamp wall. The lower end of the right-angle air blowing pipe is inserted into the alkaline solution in the sedimentation tail chamber. A treatment discharge pipe is connected to the upper part of the sedimentation tail chamber. The gas output from the right-angle air blowing pipe passes through the alkaline solution and is discharged to the outside through the treatment discharge pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This invention relates to a three-way catalytic converter for treating waste gas, which can target the waste gas generated during rare earth processing. , and The three types of waste gases undergo specialized purification treatment, effectively reducing gaseous pollution generated during rare earth processing.

[0026] This invention, through the combination of a ceramic synchronous substrate, an intermediate shaft, and a vertical plate, enables the electric heating rod to vibrate within the pores of the catalyst honeycomb ceramic during the catalytic treatment process. When the gas flows through the pores of the catalyst honeycomb ceramic, the vibration of the electric heating rod agitates the gas, generating turbulence, which allows the gas to come into more complete contact with the electric heating rod and the catalyst, thereby improving catalytic and heating efficiency.

[0027] By combining the designed rubber sealing cover, truncated cone section, and exhaust channel, a seal can be achieved between the intermediate shaft and the fixed shaft seat. At the same time, the movement of the vertical plate generates a positive pressure airflow and inputs it into the rubber sealing cover. This forces the exhaust gas to prevent it from escaping from the gap between the intermediate shaft and the fixed shaft seat into the rubber sealing cover, thus avoiding contact between corrosive exhaust gases such as hydrogen fluoride and sulfur dioxide and the rubber sealing cover, which would otherwise significantly shorten its lifespan. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0030] Figure 3 This is a three-dimensional half-sectional schematic diagram of the present invention.

[0031] Figure 4 for Figure 3 Enlarged schematic diagram of region A in the middle.

[0032] Figure 5 for Figure 4 Enlarged schematic diagram of region B in the middle.

[0033] Figure 6 This is a three-dimensional half-section front view of the present invention.

[0034] Figure 7 for Figure 6 Enlarged diagram of region C.

[0035] Figure 8 This is a schematic diagram of the rubber sealing cover structure.

[0036] In the diagram: 1. First catalytic converter; 2. Second catalytic converter; 3. Precipitation tail chamber; 4. First catalyst honeycomb ceramic; 5. Second catalyst honeycomb ceramic; 6. Heating rod; 601. Ceramic synchronous substrate; 602. Elastic support; 603. Intermediate shaft; 604. Fixed shaft seat; 605. Vertical plate; 606. Horizontal limiting plate; 607. Limiting groove; 608. Vibrating pusher; 609. Vibrating protrusion; 610. Rubber sealing cover; 61 1. Frustum section; 612. Frustum cavity; 613. Matching piston; 614. Inlet air passage; 615. Inlet one-way valve; 616. Exhaust passage; 617. Exhaust one-way valve; 7. Equipment housing; 701. Air window; 101. Exhaust gas inlet pipe; 102. Pre-filter section; 103. Separator filter element; 201. Receiving pipe; 202. Catalytic tailpipe; 301. Clamped wall inner cavity; 302. Right angle air blow-out pipe; 303. Processing discharge pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figures 1 to 8This invention provides a technical solution: a three-way catalytic converter for rare earth processing waste gas, comprising a first catalytic cylinder 1, a second catalytic cylinder 2, and a sedimentation tail chamber 3, wherein the waste gas is sequentially processed through the first catalytic cylinder 1, the second catalytic cylinder 2, and the sedimentation tail chamber 3; the first catalytic cylinder 1 is provided with a surface coated with... The first catalyst is a honeycomb ceramic 4, and the second catalyst cartridge 2 is equipped with a surface coated with... The second catalyst honeycomb ceramic 5, the first catalyst honeycomb ceramic 4, and the second catalyst honeycomb ceramic 5 are as follows: Figure 4 As shown in the figure, holes are opened through the top and bottom, and the holes are evenly arranged in a honeycomb pattern.

[0039] When the exhaust gas passes through the first catalyst honeycomb ceramic 4 at 200-300℃, the exhaust gas contains... It will be catalyzed by the first catalyst, honeycomb ceramic 4, to react with oxygen to produce The chemical formula is as follows:

[0040] ;

[0041] When the exhaust gas passes through the second catalyst honeycomb ceramic 5 at 300-400℃, the exhaust gas contains... It will be catalyzed by the second catalyst, honeycomb ceramic 5, to react with oxygen to produce The chemical formula is as follows:

[0042] ;

[0043] The sedimentation tank 3 is filled with an alkaline solution, which can be selected... Solution. and in the exhaust gas The product enters the sedimentation tailings tank 3 and reacts with the alkaline solution there to form a precipitate, thus achieving separation. The chemical formula is as follows:

[0044] Sulfate precipitate and calcium fluoride precipitate are formed respectively;

[0045] Heating rods 6 are inserted into the holes of both the first catalyst honeycomb ceramic 4 and the second catalyst honeycomb ceramic 5. The heating rods 6 are used for gas temperature control. A ceramic synchronization substrate 601 is fixedly mounted at the end of the heating rod 6. The ceramic synchronization substrate 601 supports the heating rod 6 and provides power. The ceramic synchronization substrate 601 is made of insulating ceramic material, and the heating rod 6 is a heating metal rod embedded in the ceramic synchronization substrate 601. Figure 4 As shown in the figure, copper wires are embedded inside the ceramic synchronous substrate 601, and multiple sets of heating rods 6 are connected in series and parallel through the copper wires, thereby realizing the common power supply of multiple sets of heating rods 6.

[0046] An elastic support member 602 is installed on the ceramic synchronous substrate 601. The ceramic synchronous substrate 601 is elastically supported by the elastic support member 602, so that the ceramic synchronous substrate 601 can be driven by external force to vibrate, and drive the heating rod 6 to vibrate.

[0047] An intermediate shaft 603 is fixed between the ceramic synchronous substrate 601 correspondingly arranged in the first catalytic cylinder 1 and the ceramic synchronous substrate 601 correspondingly arranged in the second catalytic cylinder 2.

[0048] Fixed bearing seats 604 are fixedly installed on the side walls of the first catalytic cylinder 1 and the second catalytic cylinder 2, respectively. An intermediate shaft 603 passes through the fixed bearing seats 604. A vertical plate 605 is fixedly installed on the intermediate shaft 603. A horizontal limiting plate 606 is fixedly installed on the vertical plate 605. A limiting groove 607 is provided on the outside of the horizontal limiting plate 606. The limiting groove 607 slides and limits the horizontal limiting plate 606, so that the horizontal limiting plate 606 and the vertical plate 605 can only move along the axial direction of the intermediate shaft 603.

[0049] A vibration pusher 608 is provided on one side of the vertical plate 605. The vibration pusher 608 is provided with a vibration protrusion 609. When the vibration pusher 608 rotates, the vibration pusher 608 intermittently presses against the vertical plate 605 through the vibration protrusion 609, causing the vertical plate 605 to move along the axial direction of the intermediate shaft 603. In conjunction with the supporting elastic force of the elastic support member 602, the intermediate shaft 603 and the ceramic synchronous substrate 601 are in a vibration state.

[0050] A rubber sealing cover 610 is provided for the sealing connection between the vertical plate 605 and the fixed shaft seat 604, see reference. Figure 5 and Figure 8 As shown, the rubber sealing cover 610 has an annular circular structure. One side of the rubber sealing cover 610 is glued or embedded to the surface of the vertical plate 605 to achieve a sealing contact. The other half of the rubber sealing cover 610 is fitted onto the end position of the fixed bearing 604 and reinforced with glue for sealing, thereby achieving a sealed connection between the vertical plate 605 and the fixed bearing 604. This allows the rubber sealing cover 610 to form a sealed cavity without affecting the relative movement between the vertical plate 605 and the fixed bearing 604. When the vertical plate 605 moves relative to the fixed bearing 604, the rubber sealing cover 610 adapts its position through deformation.

[0051] A frustum portion 611 is provided on the vertical plate 605. A frustum cavity 612 is provided inside the frustum portion 611. A mating piston 613 is provided in the frustum cavity 612. The mating piston 613 is in sealed contact with the frustum cavity 612. The mating piston 613 is fixedly installed with the first catalytic cylinder 1. When the vertical plate 605 moves, the mating piston 613 moves relative to the vertical plate 605.

[0052] The vertical plate 605 has an air intake channel 614 and an exhaust channel 616. One end of the air intake channel 614 is connected to the inner cavity of the frustum cavity 612, and the other end is connected to the outside atmosphere. One end of the exhaust channel 616 is connected to the inner cavity of the frustum cavity 612, and the other end is connected to the inside of the rubber sealing cover 610. An air intake one-way valve 615 is provided in the air intake channel 614, which allows the gas in the outside atmosphere to flow unidirectionally into the frustum cavity 612. An exhaust one-way valve 617 is provided in the exhaust channel 616, which allows the gas in the frustum cavity 612 to flow unidirectionally into the inside of the rubber sealing cover 610.

[0053] The first catalyst cylinder 1, the second catalyst cylinder 2, and the sedimentation tail chamber 3 are provided with an equipment housing 7. The equipment housing 7 provides shielding and protection for the first catalyst cylinder 1, the second catalyst cylinder 2, and the sedimentation tail chamber 3. An air window 701 is provided through the surface of the equipment housing 7.

[0054] The upper part of the first catalytic cylinder 1 is connected to an exhaust gas inlet pipe 101. The exhaust gas inlet pipe 101 is equipped with a pre-filter section 102 that can be separated and disassembled. The pre-filter section 102 is equipped with a separation filter element 103, which filters the gas flowing through the exhaust gas inlet pipe 101 for dust.

[0055] The upper part of the second catalytic cylinder 2 is connected to a receiving pipe 201, the other end of which is connected to the bottom of the first catalytic cylinder 1, and the bottom of the second catalytic cylinder 2 is connected to a catalytic tail pipe 202.

[0056] The interior of the sedimentation tail chamber 3 is provided with a clamped inner cavity 301, and the catalytic tail pipe 202 is connected to the clamped inner cavity 301. A right-angle gas blowing pipe 302 is connected to the upper part of the clamped inner cavity 301. The lower end of the right-angle gas blowing pipe 302 is inserted into the alkaline solution in the sedimentation tail chamber 3. A treatment discharge pipe 303 is connected to the upper part of the sedimentation tail chamber 3. The gas output from the right-angle gas blowing pipe 302 passes through the alkaline solution and is discharged to the outside through the treatment discharge pipe 303.

[0057] The waste gas triple-effect catalytic converter of this invention contains, during use... , and The rare earth treatment waste gas is input through the waste gas input pipe 101, and after being filtered by the separation filter element 103 to remove dust, it is processed in the first catalytic cylinder 1, the second catalytic cylinder 2 and the sedimentation tail chamber 3 in sequence.

[0058] like Figure 4 As shown, an electric heating rod 6 is inserted into the holes of the first catalyst honeycomb ceramic 4. When the exhaust gas passes through the first catalyst honeycomb ceramic 4, it is heated to 200-300℃ by the electric heating rod 6. After being catalyzed by the first catalyst, honeycomb ceramic 4, it reacts with oxygen to generate... The oxygen comes from the oxygen in the air during the negative pressure collection process of the exhaust gas.

[0059] The waste gas is conveyed through the receiving pipe 201 and enters the second catalytic cylinder 2 for treatment. When the waste gas passes through the second catalyst honeycomb ceramic 5, it is heated to 300-400℃ by the corresponding electric heating rod 6 in the second catalyst honeycomb ceramic 5. After being catalyzed by the second catalyst, honeycomb ceramic 5, it reacts with oxygen to generate... ,contain and The gas enters the inner cavity 301 of the jacket wall through the catalytic tail pipe 202, and is finally fed into the alkaline solution in the precipitation tail chamber 3 through the right-angle gas blowing pipe 302. After reacting with the alkaline solution to form a precipitate, it is discharged through the treatment discharge pipe 303.

[0060] In the above process, such as Figure 4 and Figure 5 As shown, the vibrating pusher 608 is driven to rotate by a motor. The vibrating pusher 608 impacts the vertical plate 605 at high frequency through the vibrating protrusions 609 on its surface. Combined with the restoring force generated by the elastic support 602, the vertical plate 605 and the intermediate shaft 603 oscillate and move back and forth along the axial direction of the intermediate shaft 603, thereby driving the ceramic synchronous substrate 601 and the electric heating rod 6 to vibrate. When the airflow passes through the holes of the first catalyst honeycomb ceramic 4 or the second catalyst honeycomb ceramic 5, the vibration of the electric heating rod 6 can agitate the gas and generate turbulence, so that the gas can come into more complete contact with the electric heating rod 6 and the catalyst, thereby improving the catalytic and heating efficiency.

[0061] like Figure 5 As shown, the intermediate shaft 603 reciprocates relative to the fixed shaft seat 604. Since the internal exhaust gas of the first catalytic cylinder 1 and the second catalytic cylinder 2 is heated to the range of 200-400°C, if a rubber ring is used to achieve contact sealing between the intermediate shaft 603 and the fixed shaft seat 604, the rubber ring will quickly fail under the high temperature of several hundred degrees, the corrosive gas in the exhaust gas, and the high-frequency friction. In this application, an external rubber sealing cover 610 is used to achieve the sealing between the intermediate shaft 603 and the fixed shaft seat 604 and the outside atmosphere, which reduces the working temperature of the rubber sealing cover 610 and avoids high-frequency friction on the rubber sealing cover 610.

[0062] Simultaneously, during the reciprocating movement of the vertical plate 605, the piston 613 moves synchronously within the frustum cavity 612, causing atmospheric gas to be continuously drawn in through the intake check valve 615 and discharged into the rubber sealing cover 610 through the exhaust check valve 617. The continuous influx of atmospheric gas into the rubber sealing cover 610 increases the pressure within it compared to the first catalytic cylinder 1 and the second catalytic cylinder 2. At this point, atmospheric gas enters the first catalytic cylinder 1 and the second catalytic cylinder 2 through the gap between the intermediate shaft 603 and the fixed shaft seat 604. This forces the corrosive exhaust gas in the first and second catalytic cylinders 1 and 2 to prevent it from escaping into the rubber sealing cover 610 through the gap between the intermediate shaft 603 and the fixed shaft seat 604, thus preventing the rubber sealing cover 610 from contacting the corrosive gases in the exhaust gas and extending its service life. Furthermore, the input of oxygen-containing air into the first and second catalytic cylinders 1 and 2 replenishes the oxygen required for the catalytic reaction, improving the catalytic effect.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-way catalytic converter for rare earth waste gas treatment, comprising a first catalytic cylinder, a second catalytic cylinder, and a sedimentation tail chamber, characterized in that: The exhaust gas is treated sequentially through the first catalytic converter, the second catalytic converter, and the sedimentation tail chamber; The first catalyst cartridge is provided with a surface coated with The first catalyst is a honeycomb ceramic, and the second catalyst cartridge contains a surface coated with... The second catalyst of the catalyst is a honeycomb ceramic; When the exhaust gas passes through the first catalyst honeycomb ceramic at 200-300℃, the exhaust gas contains... It will be catalyzed by the first catalyst, honeycomb ceramic, to react with oxygen to produce ; When the exhaust gas passes through the second catalyst honeycomb ceramic at 300-400℃, the exhaust gas contains... It will be catalyzed by the second catalyst, honeycomb ceramic, to react with oxygen to produce ; The sedimentation tailings chamber is filled with an alkaline solution. and in the exhaust gas It enters the sedimentation tailings tank and reacts with the alkaline solution there to form precipitate, thus achieving separation; Heating rods are inserted into the pores of both the first and second catalyst honeycomb ceramics, and the heating rods are used to control the temperature of the gas. A ceramic synchronous substrate is fixedly provided at the end of the heating rod. An elastic support is installed on the ceramic synchronous substrate. The ceramic synchronous substrate is elastically supported by the elastic support, so that the ceramic synchronous substrate can be driven by external force to vibrate and drive the heating rod to vibrate. An intermediate shaft is fixed between the ceramic synchronous substrates correspondingly arranged in the first catalytic cylinder and the ceramic synchronous substrates correspondingly arranged in the second catalytic cylinder. Fixed bearing seats are fixedly installed on the side walls of the first and second catalyst cylinders, respectively. The intermediate shaft passes through the fixed bearing seats and a vertical plate is fixedly installed on the intermediate shaft. A horizontal limiting plate is fixedly installed on the vertical plate. A limiting groove is provided on the outside of the horizontal limiting plate. The limiting groove slides and limits the horizontal limiting plate, so that the horizontal limiting plate and the vertical plate can only move along the axial direction of the intermediate shaft. A vibrating pusher is provided on one side of the vertical plate. The vibrating pusher is provided with a vibrating protrusion. When the vibrating pusher rotates, the vibrating pusher intermittently presses against the vertical plate through the vibrating protrusion, so that the vertical plate moves along the axial direction of the intermediate shaft. With the support elastic force of the elastic support member, the intermediate shaft and the ceramic synchronous substrate are in a vibrating state.

2. The three-way catalytic converter for rare earth processing waste gas as described in claim 1, characterized in that: The ceramic synchronous substrate is used to support the heating rod and provide power supply.

3. The three-way catalytic converter for rare earth processing waste gas as described in claim 1, characterized in that: A rubber sealing cover is provided between the vertical plate and the fixed shaft seat for sealing connection. The vertical plate is provided with a frustum portion, and a frustum cavity is opened inside the frustum portion. A mating piston is provided in the frustum cavity. The mating piston is in sealed contact with the frustum cavity. The mating piston is fixedly installed with the first catalytic cylinder. When the vertical plate moves, the mating piston moves relative to the vertical plate.

4. The rare earth treatment waste gas triple-effect catalytic converter according to claim 3, characterized in that: The vertical plate is provided with an air intake channel and an exhaust channel; One end of the air intake channel is connected to the inner cavity of the frustum cavity, and the other end is connected to the outside atmosphere; One end of the exhaust channel is connected to the inner cavity of the frustum cavity, and the other end is connected to the inside of the rubber sealing cover; An intake check valve is provided in the intake channel, which allows gas from the outside atmosphere to flow unidirectionally into the frustum cavity; an exhaust check valve is provided in the exhaust channel, which allows gas from the frustum cavity to flow unidirectionally into the rubber sealing cover.

5. The rare earth treatment waste gas triple-effect catalytic converter according to claim 1, characterized in that: The first catalytic cylinder, the second catalytic cylinder, and the sedimentation tail chamber are all equipped with an equipment housing. The equipment housing provides shielding and protection for the first catalytic cylinder, the second catalytic cylinder, and the sedimentation tail chamber. The surface of the equipment housing is provided with a through-hole for ventilation.

6. The three-way catalytic converter for rare earth processing waste gas according to claim 1, characterized in that: The upper part of the first catalytic cylinder is connected to an exhaust gas inlet pipe, and a pre-filter section that can be separated and disassembled is provided on the exhaust gas inlet pipe. The pre-filter section is provided with a separation filter element, which filters dust from the gas flowing through the exhaust gas inlet pipe.

7. The three-way catalytic converter for rare earth processing waste gas according to claim 1, characterized in that: The upper part of the second catalytic cylinder is connected to a receiving pipe, the other end of which is connected to the bottom of the first catalytic cylinder, and the bottom of the second catalytic cylinder is connected to a catalytic tail pipe.

8. The three-way catalytic converter for rare earth processing waste gas according to claim 7, characterized in that: The sedimentation tail chamber has an internal cavity with a clamping wall, and the catalytic tail pipe is connected to the internal cavity with the clamping wall. A right-angle air blowing pipe is connected to the upper part of the inner cavity of the clamp wall. The lower end of the right-angle air blowing pipe is inserted into the alkaline solution in the sedimentation tail chamber. A treatment discharge pipe is connected to the upper part of the sedimentation tail chamber. The gas output from the right-angle air blowing pipe passes through the alkaline solution and is discharged to the outside through the treatment discharge pipe.

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