RCO catalytic bed

Abstract

The utility model relates to an RCO catalytic bed. The RCO catalytic bed comprises a case, when the catalyst in the upper catalytic cavity and the catalyst in the lower catalytic cavity are about to lose activity, the switch valves and the control valves on the first pipe and the fourth pipe are opened, the switch valves on the second pipe and the third pipe are closed, and the heating rods in the upper catalytic cavity and the heating rods in the lower catalytic cavity work at the same time; organic waste gas sequentially enters a gas inlet pipe, an upper catalysis cavity, a through hole, a lower catalysis cavity, a fourth pipe, a connecting pipe, a heat exchange cavity and a gas outlet pipe, the organic waste gas is treated for the first time through a catalyst which is about to lose activity in the upper catalysis cavity, and further gas enters the catalyst which is about to lose activity in the catalysis cavity through the through hole to be treated for the second time. Although the catalyst is about to lose activity, the catalyst can still be used for treating the organic waste gas through two treatments, and the residual value of the catalyst can be fully exerted. Therefore, the replacement cost of the catalyst is reduced, and the utilization rate of resources is improved.

Description

Technical Field

[0001] This utility model relates to the field of catalytic combustion technology, specifically to an RCO catalytic bed. Background Technology

[0002] In catalytic combustion, after the exhaust gas enters the catalytic bed, the organic matter in the exhaust gas undergoes a full oxidation reaction with oxygen under the action of the catalyst within the catalytic bed, ultimately producing carbon dioxide and water. This organic waste gas reaction process occurs at a relatively low temperature, making it more environmentally friendly than traditional combustion methods. (See Publication No. CN210485766U - Chinese Utility Model: An RCO Catalytic Bed). However, this catalytic bed contains only one catalytic chamber. When the catalyst in the catalytic chamber is about to lose its activity, the entire catalyst within the chamber must be replaced. However, replacing the entire catalyst means purchasing a large amount of new catalyst, which directly leads to a significant increase in equipment operating costs. Utility Model Content

[0003] The main purpose of this invention is to provide an RCO catalyst bed to solve the problem that in existing RCO catalyst beds, when the catalyst in the catalyst chamber is about to lose its activity, the entire catalyst in the catalyst chamber needs to be replaced. Replacing the entire catalyst means that a large number of new catalysts need to be purchased, which will directly lead to a significant increase in equipment operating costs.

[0004] To achieve the above objectives, this utility model provides an RCO catalyst bed, including a casing;

[0005] Two partitions are fixedly installed inside the chassis, which divide the chassis into an upper catalytic chamber, a lower catalytic chamber and a heat exchange chamber from top to bottom.

[0006] The two sides of the upper catalytic chamber are respectively connected to the first tube and the second tube;

[0007] The lower catalytic chamber is connected to the third and fourth tubes on both sides, respectively;

[0008] Both the first and third pipes are connected to the air intake pipe;

[0009] Both the second and fourth tubes are connected to a connecting tube, and the end of the connecting tube furthest from the second or fourth tube is connected to the heat exchange chamber.

[0010] Switch valves are installed in the first, second, third, and fourth pipes;

[0011] Among them, a through hole is opened in the partition between the upper catalytic chamber and the lower catalytic chamber, and a control valve is installed at the through hole;

[0012] Heating rods and catalysts are installed in both the upper and lower catalytic chambers;

[0013] The heat exchange chamber is connected to the air outlet pipe.

[0014] Preferably, multiple heating rods are provided in both the upper and lower catalytic chambers.

[0015] Preferably, a switch door is provided on one side of both the upper catalytic chamber and the lower catalytic chamber, and a placement component is provided inside both.

[0016] The placement component includes two vertical plates and a rectangular shell with an open top;

[0017] Two vertical plates are fixedly installed on the inner wall of the chassis along the height direction, and limiting grooves are opened at the same height on the opposite side walls of the two plates. The rectangular shell can be inserted into the two limiting grooves, and the catalyst is filled inside the rectangular shell.

[0018] Preferably, the bottom wall of the rectangular shell has multiple ventilation holes.

[0019] Preferably, a heat exchanger is installed inside the heat exchange chamber.

[0020] Preferably, there are two air outlet pipes, which are located on both sides of the heat exchange chamber and at the bottom of the heat exchange chamber, with one end of the connecting pipe connected to the top of the heat exchange chamber.

[0021] Preferably, a rectangular groove is formed on one side wall of the chassis, the rectangular groove extends to the partition plate between the upper catalytic chamber and the lower catalytic chamber, and the rectangular groove communicates with the through hole;

[0022] The control valve includes a shield and a cylinder;

[0023] One end of the shielding plate is fixedly connected to the piston rod of the cylinder via a connecting plate. The cylinder seat is fixedly connected to the outer wall of the casing. The shielding plate is slidably mounted on the rectangular groove and can cover the through hole.

[0024] The beneficial effects of the above scheme are as follows: In the initial state, all four switching valves and the control valve are in the closed state, and the gas flow is divided into three states:

[0025] State 1: The valves of both the first and second pipes are open, driving the heating rod of the upper catalytic chamber to work. The organic waste gas enters the upper catalytic chamber from the inlet pipe and the first pipe to react with the catalyst. Further, the gas after reaction enters the heat exchange chamber through the second pipe and the connecting pipe. Further, the gas enters the next process through the outlet pipe.

[0026] State 2: When the catalyst in the upper catalytic chamber is about to lose its activity, the valves of the first and second pipes are closed, and the valves of the third and fourth pipes are opened, driving the heating rod of the lower catalytic chamber to work. The organic waste gas enters the lower catalytic chamber from the inlet pipe and the third pipe to react with the catalyst. Furthermore, the gas after reaction enters the heat exchange chamber through the fourth pipe and the connecting pipe. Furthermore, the gas enters the next process through the outlet pipe. In this way, the lower catalytic chamber can be replaced online directly.

[0027] State 3: When the catalysts in both the upper and lower catalytic chambers are nearing deactivation, the switching valves and control valves on the first and fourth pipes open, while the switching valves on the second and third pipes close. The heating rods in both the upper and lower catalytic chambers operate simultaneously. Organic waste gas sequentially enters the inlet pipe, upper catalytic chamber, through-hole, lower catalytic chamber, fourth pipe, connecting pipe, heat exchange chamber, and outlet pipe. The organic waste gas first undergoes a first-stage treatment on the nearly deactivated catalyst in the upper catalytic chamber. Then, the gas passes through the through-hole into the nearly deactivated catalyst in the lower catalytic chamber for a second-stage treatment. Although the catalyst is nearing deactivation, through these two stages of treatment, it can still be used to treat the organic waste gas, fully utilizing its remaining value. This not only reduces catalyst replacement costs but also improves resource utilization. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 yes Figure 1 A cross-sectional structural diagram.

[0031] Explanation of reference numerals in the attached figures

[0032] 1. Chassis; 11. Exhaust pipe; 12. Switch door; 13. Placement component; 130. Vertical plate; 1301. Limiting groove; 131. Rectangular shell; 1310. Vent hole; 14. Rectangular groove;

[0033] 2. Partition; 21. Through hole;

[0034] 3. Upper catalytic chamber; 31. First tube; 32. Second tube;

[0035] 4. Lower catalytic converter chamber; 41. Third tube; 42. Fourth tube;

[0036] 5. Heat exchange chamber; 51. Heat exchanger;

[0037] 6. Air intake pipe;

[0038] 7. Connecting pipe;

[0039] 8. Control valve; 81. Shielding plate; 82. Cylinder; 83. Connecting plate;

[0040] 9. Heating rod. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides an RCO catalyst bed, including a casing 1. Figure 2 As shown, two partitions 2 are fixedly installed inside the casing 1, dividing the casing 1 from top to bottom into an upper catalytic chamber 3, a lower catalytic chamber 4, and a heat exchange chamber 5. The upper catalytic chamber 3 is connected to a first pipe 31 and a second pipe 32 on both sides, respectively. The lower catalytic chamber 4 is connected to a third pipe 41 and a fourth pipe 42 on both sides, respectively. Both the first pipe 31 and the third pipe 41 are connected to an intake pipe 6. Both the second pipe 32 and the fourth pipe 42 are connected to a connecting pipe 7, with the end of the connecting pipe 7 furthest from the second pipe 32 or the fourth pipe 42 connected to the heat exchange chamber 5. Switch valves (not shown) are installed in the first pipe 31, the second pipe 32, the third pipe 41, and the fourth pipe 42. A through hole 21 is opened in the partition 2 between the upper catalytic chamber 3 and the lower catalytic chamber 4, and a control valve 8 is installed at the through hole 21. A rectangular groove 14 is opened on one side wall of the casing 1, as shown... Figure 2As shown, the rectangular groove 14 extends to the partition plate 2 located between the upper catalytic chamber 3 and the lower catalytic chamber 4, and the rectangular groove 14 communicates with the through hole 21. The control valve 8 includes a shielding plate 81 and a cylinder 82. One end of the shielding plate 81 is fixedly connected to the piston rod of the cylinder 82 via a connecting plate 83. The cylinder seat of the cylinder 82 is fixedly connected to the outer wall of the casing 1. The shielding plate 81 is slidably disposed on the rectangular groove 14, and the shielding plate 81 can shield the through hole 21. The extension and retraction of the piston rod of the cylinder 82 can drive the shielding plate 81 to slide in the rectangular groove 14, thereby shielding or opening the through hole 21. Multiple heating rods 9 and catalyst are installed in both the upper catalytic chamber 3 and the lower catalytic chamber 4. The heat exchange chamber 5 is connected to the gas outlet pipe 11. A heat exchanger 51 is installed in the heat exchange chamber 5. The heat exchanger 51 adopts existing technology, so it will not be described in detail. Heat exchanger 51 can cool the gas after catalytic combustion, effectively protecting subsequent processing equipment. This is because the thermal shock and potential thermal damage to the equipment are greatly reduced after cooling. There are two outlet pipes 11, located on both sides of the heat exchange chamber 5 and at the bottom of the heat exchange chamber 5. One end of the connecting pipe 7 is located at the top of the heat exchange chamber 5 and is connected to it.

[0043] Initially, all four switching valves and control valve 8 are closed. Gas flow occurs in three states: State 1: The switching valves of the first pipe 31 and the second pipe 32 are both open, driving the heating rod 9 of the upper catalytic chamber 3. Organic waste gas enters the upper catalytic chamber 3 from the inlet pipe 6 and the first pipe 31 to react with the catalyst. The reacted gas then enters the heat exchange chamber 5 through the second pipe 32 and the connecting pipe 7. Finally, the gas exits through the outlet pipe 11 to the next process. State 2: When the catalyst in the upper catalytic chamber 3 is about to lose its activity, the switching valves of the first pipe 31 and the second pipe 32 are closed, as are the switching valves of the third pipe 41 and the fourth pipe 42. This drives the heating rod 9 of the lower catalytic chamber 4 to open, allowing organic waste gas to enter the lower catalytic chamber 4 from the inlet pipe 6 and the third pipe 41 to react with the catalyst. The reacted gas then enters the heat exchange chamber 5 through the fourth pipe 42 and the connecting pipe 7. Finally, the gas exits through the outlet pipe 11 to the next process. This allows for direct online replacement of the lower catalytic chamber 4. State 3: When the catalysts in both the upper catalytic chamber 3 and the lower catalytic chamber 4 are about to lose their activity, the switching valves on the first pipe 31 and the fourth pipe 42, as well as the control valve 8, open, while the switching valves on the second pipe 32 and the third pipe 41 close. The heating rods 9 in both the upper catalytic chamber 3 and the lower catalytic chamber 4 operate simultaneously. The organic waste gas sequentially enters the inlet pipe 6, upper catalytic chamber 3, through-hole 21, lower catalytic chamber 4, fourth pipe 42, connecting pipe 7, heat exchange chamber 5, and outlet pipe 11. The organic waste gas first undergoes a first treatment on the nearly deactivated catalyst in the upper catalytic chamber 3. Then, the gas passes through through-hole 21 into the nearly deactivated catalyst in the catalytic chamber for a second treatment. Although the catalyst is about to lose its activity, through these two treatments, it can still be used to treat the organic waste gas, fully utilizing its remaining value. This not only reduces the cost of catalyst replacement but also improves resource utilization.

[0044] Both the upper catalytic chamber 3 and the lower catalytic chamber 4 have a switch door 12 on one side, and both contain a placement component 13. The placement component 13 includes two vertical plates 130 and a rectangular shell 131 with an open top. The two vertical plates 130 are fixedly mounted on the inner wall of the casing 1 along its height, and limiting grooves 1301 are formed at the same height on opposite side walls. The rectangular shell 131 can be inserted into the two limiting grooves 1301, and is filled with catalyst. The design of the switch door 12 and the rectangular shell 131 facilitates catalyst replacement. Multiple vent holes 1310 are formed in a matrix on the bottom wall of the rectangular shell 131, which is beneficial for the flow of organic waste gas.

[0045] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. An RCO catalyst bed, characterized in that, include: The chassis has two partitions fixedly installed inside, which divide the chassis from top to bottom into an upper catalytic chamber, a lower catalytic chamber, and a heat exchange chamber. The upper catalytic chamber is connected to the first tube and the second tube on both sides, respectively; The lower catalytic chamber is connected to the third tube and the fourth tube on both sides, respectively; Both the first pipe and the third pipe are connected to the air intake pipe; Both the second tube and the fourth tube are connected to a connecting tube, and the end of the connecting tube furthest from the second tube or the fourth tube is connected to the heat exchange chamber; The first pipe, the second pipe, the third pipe, and the fourth pipe are all equipped with switching valves; The partition between the upper catalytic chamber and the lower catalytic chamber has a through hole, and a control valve is installed at the through hole; Both the upper and lower catalytic chambers are equipped with heating rods and filled with catalysts. The heat exchange chamber is connected to the air outlet pipe.

2. The RCO catalyst bed according to claim 1, characterized in that, Both the upper catalytic chamber and the lower catalytic chamber are equipped with multiple heating rods.

3. The RCO catalyst bed according to claim 1, characterized in that, Both the upper catalytic chamber and the lower catalytic chamber have openings on one side, and both are equipped with placement components. The placement component includes two vertical plates and a rectangular shell with an open top; The two vertical plates are fixedly installed on the inner wall of the chassis along the height direction of the chassis, and the two plates have limiting grooves at the same height on their opposite side walls. The rectangular shell can be inserted into the two limiting grooves, and the catalyst is filled in the rectangular shell.

4. The RCO catalyst bed according to claim 3, characterized in that, The bottom wall of the rectangular shell has multiple ventilation holes.

5. The RCO catalyst bed according to claim 1, characterized in that, A heat exchanger is installed inside the heat exchange cavity.

6. The RCO catalyst bed according to claim 5, characterized in that, There are two air outlet pipes, which are located on both sides of the heat exchange chamber and at the bottom of the heat exchange chamber. One end of the connecting pipe is located at the top of the heat exchange chamber and is connected to it.

7. The RCO catalyst bed according to any one of claims 1-6, characterized in that, A rectangular groove is formed on one side wall of the chassis, the rectangular groove extends to the spacer plate located between the upper catalytic chamber and the lower catalytic chamber, and the rectangular groove communicates with the through hole; The control valve includes a shielding plate and a cylinder; One end of the shielding plate is fixedly connected to the piston rod of the cylinder via a connecting plate. The cylinder seat of the cylinder is fixedly connected to the outer wall of the chassis. The shielding plate is slidably disposed on the rectangular groove and can cover the through hole.

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