Catalytic reactor for removing ozone

Abstract

The ozone removal catalytic reactor comprises a fixed shell and a movable cover body which are matched with each other, one of the fixed shell and the movable cover body is provided with a gas inlet, and the other one of the fixed shell and the movable cover body is provided with a gas outlet; a plurality of catalyst modules are arranged in the fixed shell, and a gas distributor is arranged in the movable cover body and / or the fixed shell; and the catalyst module and the gas distributor are positioned on a gas passage between the gas inlet and the gas outlet. According to the utility model, the modularized catalyst is arranged, so that great resistance drop when gas passes through the catalyst is avoided, and the catalytic reaction efficiency is improved; modularized catalysts are piled and placed, so that the catalysts are more convenient to disassemble, assemble and replace; and through the gas distributor, the gas material is more uniformly contacted with the catalyst when passing through the catalyst module.

Description

Technical Field

[0001] The utility model relates to the technical field of catalytic reactors, in particular to a deozonation catalytic reactor. Background Art

[0002] At present, in the field of sewage treatment, ozone advanced oxidation is used to treat high COD in sewage, as well as disinfection and sterilization. The tail gas after ozone oxidation needs to be degraded with a deozonation catalyst. However, the tail gas volume is generally small, only a few dozen cubic meters, and the catalyst is granular. Such a reactor is generally cylindrical, and the gas volume is small, so there is no need to distribute the gas and redistribute the rate.

[0003] With the expansion of the application field of ozone advanced oxidation technology, it is also used in some low-temperature flue gas denitrification, but the flue gas volume is large, ranging from tens of thousands to millions of cubic meters. It is unreasonable to use granular deozonation catalysts to treat such a large amount of flue gas, because the gas resistance drop is large, which will increase the load of the fan and affect the catalytic efficiency of the catalytic reaction.

[0004] The Chinese utility model patent with a publication date of 2022-05-10 and a publication number of CN216472594U discloses an ozone catalytic reactor, including a reaction tank and a filtering component; the reaction tank is provided with a mixing chamber for mixing sewage and ozone and a water chamber to be discharged connected to the mixing chamber; the reaction tank is provided with a feeding structure for supplying sewage and ozone into the mixing chamber; the filtering component separates the mixing chamber and the water chamber to be discharged, and is used to catalytically filter the sewage and ozone into liquid to be discharged and gas to be discharged; the reaction tank is provided with a liquid discharge hole connected to the water chamber to be discharged and for the liquid to be discharged to flow out, and a gas discharge hole connected to the water chamber to be discharged and for the gas to be discharged to be discharged; the reaction tank is provided with a backwash gas inlet hole and a backwash liquid inlet hole both connected to the mixing chamber, the backwash gas inlet hole is used to supply the washing gas to enter the mixing chamber, and the backwash liquid inlet hole is used to supply the washing liquid to enter the mixing chamber. However, the catalyst of the patent is granular, and the resistance drop is large when used for a large amount of materials, which affects the catalytic efficiency of the catalytic reaction. Summary of the invention

[0005] In view of the above technical problems, the utility model proposes a deozonation catalytic reactor, which is used to solve the problem that the catalytic efficiency of the catalytic reactor in the prior art is low when used for a large amount of materials.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A deozonation catalytic reactor includes a matching fixed shell and a movable cover, one of which is provided with a gas inlet and the other with a gas outlet; a plurality of catalyst modules are provided in the fixed shell, and a gas distributor is provided in the movable cover and / or the fixed shell; and the catalyst modules and the gas distributor are located on the gas passage between the gas inlet and the gas outlet. The utility model avoids a large resistance drop when the gas passes through the catalyst and improves the catalytic reaction efficiency by arranging modular catalysts; by arranging modular catalyst stacking and placement, the catalyst can be more conveniently disassembled and replaced; and by using the gas distributor, the gas material can be more evenly contacted with the catalyst when passing through the catalyst module.

[0008] Furthermore, the fixed shell includes a straight cylinder and a first conical cylinder, the large end of the first conical cylinder is connected to one side of the straight cylinder, the movable cover is movably arranged on the other side of the straight cylinder, and the small end of the first conical cylinder is a gas inlet.

[0009] Furthermore, the movable cover body comprises a second conical cylinder, the large end of the second conical cylinder cooperates with the straight cylinder, and the small end of the second conical cylinder is a gas outlet.

[0010] Furthermore, the straight cylinder is a rectangular cylinder, and the first tapered cylinder and / or the second tapered cylinder is a square tapered cylinder.

[0011] Furthermore, a plurality of the catalyst modules are arranged in the straight cylinder, and the plurality of catalyst modules are stacked.

[0012] Furthermore, a blocking bar is provided in the movable cover and / or in the fixed shell at a position close to the catalyst module to prevent the catalyst module from falling down.

[0013] Furthermore, the gas distributor is a "W"-shaped distributor, and a plurality of circular holes with a diameter of 3 to 5 mm are distributed on the gas distributor.

[0014] Furthermore, the movable cover body is hingedly connected to the fixed shell on one side and connected to the fixed shell on the other side through a lock. The lock includes a screw hinged on the fixed shell and a clamping plate arranged on the movable cover body. The clamping plate is provided with an opening for the screw to rotate through. A nut is threaded on the screw for tightening the clamping plate.

[0015] Furthermore, a sealing ring is provided between the fixed shell and the movable cover.

[0016] Furthermore, a connecting flange is provided on the gas inlet and / or the gas outlet, and a primary filter cotton is provided on the connecting flange located at the gas inlet.

[0017] Beneficial effects of the utility model:

[0018] 1. The utility model provides modular catalysts to avoid a large resistance drop when the gas passes through the catalyst, thereby improving the efficiency of the catalytic reaction;

[0019] 2. The utility model uses a "W"-shaped distributor to make the gas material contact with the catalyst more evenly when passing through the catalyst module, and the catalyst on the periphery can also play a better catalytic role;

[0020] 3. The utility model provides modular catalyst stacking, making it more convenient to disassemble, assemble and replace the catalyst;

[0021] 4. The utility model provides a baffle to prevent the catalyst module from falling down. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0025] In the figure: 1. fixed shell, 2. movable cover, 3. baffle, 4. catalyst module, 5. sealing ring, 6. gas distributor, 7. screw, 8. clamping plate, 9. nut. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1As shown, a deozonation catalytic reactor described in Example 1 of the utility model comprises a matching fixed shell 1 and a movable cover 2, a gas inlet is provided at one end of the fixed shell 1 away from the movable cover 2, and a gas outlet is provided at one end of the movable cover 2 away from the fixed shell 1; a plurality of catalyst modules 4 are provided in the fixed shell 1. A gas distributor 6 is provided in the movable cover 2 and / or the fixed shell 1. In this embodiment, a gas distributor 6 is provided in both the movable cover 2 and the fixed shell 1, and the two gas distributors 6 are respectively located on both sides of the catalyst module 4. And the catalyst module 4 and the gas distributor 6 are both located on the gas passage between the gas inlet and the gas outlet.

[0028] Furthermore, if Figure 1 and Figure 2 As shown, the fixed shell 1 includes a straight cylinder and a first conical cylinder, the large end of the first conical cylinder is connected to one side of the straight cylinder, the movable cover 2 is movably arranged on the other side of the straight cylinder, and the small end of the first conical cylinder is a gas inlet.

[0029] Furthermore, the movable cover body 2 includes a second conical cylinder, the large end of the second conical cylinder cooperates with the straight cylinder, and the small end of the second conical cylinder is a gas outlet.

[0030] Embodiment 2 is different from Embodiment 1 in that Figure 1 and Figure 2 As shown, the straight cylinder is a rectangular cylinder, and the first conical cylinder and the second conical cylinder are square conical cylinders. The catalyst module 4 is arranged in the straight cylinder. The gas distributor 6 is arranged in the first conical cylinder and the second conical cylinder respectively. In this embodiment, Figure 1 and Figure 2 As shown, a plurality of catalyst modules 4 are arranged in the straight cylinder, and the plurality of catalyst modules 4 are stacked.

[0031] Embodiment 3 is different from Embodiment 2 in that Figure 2 As shown, the gas distributor 6 is a "W"-shaped distributor, and a plurality of small meshes are provided on the "W"-shaped distributor. The "W"-shaped distributor forms a plurality of angles with the gas flow direction, which makes the gas distribution more uniform. In this embodiment, a plurality of circular holes with a diameter of 3 to 5 mm are evenly distributed on the gas distributor 6, which, on the one hand, play a role in dispersing the gas velocity, and on the other hand, play a role in making the gas distribution uniform.

[0032] Embodiment 4 is different from Embodiment 2 in that Figure 1 and Figure 2 As shown, the movable cover 2 and the fixed shell 1 are both provided with baffles 3 near the catalyst module 4. In this embodiment, the baffles 3 are of a "well"-shaped structure, which is used to prevent the catalyst module 4 from being scattered or falling down.

[0033] Furthermore, the movable cover 2 is hingedly connected to the fixed housing 1 at one side and connected to the fixed housing 1 at the other side through a lock. In this embodiment, the lock comprises a screw 7 hingedly connected to the fixed housing 1 and a clamping plate 8 arranged on the movable cover 2, the clamping plate 8 is provided with an opening for the screw 7 to rotate through, and a nut 9 is screwed on the screw 7 for pressing the clamping plate 8.

[0034] Furthermore, a sealing ring 5 is provided between the fixed housing 1 and the movable cover 2. In this embodiment, the sealing ring 5 is embedded in the straight cylinder near the movable cover 2, and after the movable cover 2 is closed, the sealing ring 5 can be compressed by the lock to prevent gas leakage. In this embodiment, the sealing ring is sealed with a high temperature resistant asbestos strip.

[0035] In addition, after the movable cover 2 and the fixed housing 1 are closed, the blocking strip 3 in the movable cover 2 squeezes the sealing ring 5 to further play a sealing role.

[0036] Embodiment 5 is different from Embodiment 4 in that the gas inlet and the gas outlet are provided with connecting flanges 9 for connecting the gas pipeline. The connecting flange 9 at the gas inlet is provided with primary filter cotton to filter dust, grease and other granular substances entering the gas.

[0037] Embodiment 6 differs from Embodiment 5 in that a sampling valve (not shown in the figure) is provided on the gas pipeline connected to the gas inlet and outlet.

[0038] Furthermore, in another embodiment, the entire deozonation catalytic reactor is made of 316 stainless steel.

[0039] The size of the deozonation catalytic reactor varies according to the actual gas volume.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deozonation catalytic reactor, characterized in that: The invention comprises a fixed shell (1) and a movable cover (2) which match each other, wherein one of the fixed shell (1) and the movable cover (2) is provided with a gas inlet, and the other is provided with a gas outlet; a plurality of catalyst modules (4) are provided in the fixed shell (1), and a gas distributor (6) is provided in the movable cover (2) and / or the fixed shell (1); and the catalyst modules (4) and the gas distributor (6) are located on the gas passage between the gas inlet and the gas outlet.

2. The deozonation catalytic reactor according to claim 1, characterized in that: The fixed shell (1) comprises a straight cylinder and a first conical cylinder, the large end of the first conical cylinder is connected to one side of the straight cylinder, the movable cover (2) is movably arranged on the other side of the straight cylinder, and the small end of the first conical cylinder is a gas inlet.

3. The deozonation catalytic reactor according to claim 2, characterized in that: The movable cover body (2) comprises a second conical cylinder, the large end of the second conical cylinder cooperates with the straight cylinder, and the small end of the second conical cylinder is a gas outlet.

4. The deozonation catalytic reactor according to claim 3, characterized in that: The straight cylinder is a rectangular cylinder, and the first tapered cylinder and / or the second tapered cylinder is a square tapered cylinder.

5. The deozonation catalytic reactor according to any one of claims 2 to 4, characterized in that: A plurality of the catalyst modules (4) are arranged in the straight cylinder, and the plurality of catalyst modules (4) are stacked.

6. The deozonation catalytic reactor according to claim 5, characterized in that: A blocking bar (3) is provided in the movable cover (2) and / or in the fixed shell (1) at a position close to the catalyst module (4) for preventing the catalyst module (4) from falling down.

7. The deozonation catalytic reactor according to any one of claims 1 to 4 or 6, characterized in that: The gas distributor (6) is a "W"-shaped distributor, and is provided with a plurality of circular holes with a diameter of 3 to 5 mm.

8. The deozonation catalytic reactor according to any one of claims 1 to 4 or 6, characterized in that: The movable cover (2) is hingedly connected to the fixed housing (1) on one side and connected to the fixed housing (1) on the other side via a lock, the lock comprising a screw (7) hingedly connected to the fixed housing (1) and a clamping plate (8) arranged on the movable cover (2), the clamping plate (8) being provided with an opening for the screw (7) to rotate through, and a nut (9) being threadedly connected to the screw (7) for pressing the clamping plate (8).

9. The deozonation catalytic reactor according to claim 8, characterized in that: A sealing ring (5) is provided between the fixed shell (1) and the movable cover (2).

10. The deozonation catalytic reactor according to any one of claims 1 to 4 or 6 or 9, characterized in that: A connecting flange (10) is provided on the gas inlet and / or the gas outlet, and a primary filter cotton is provided on the connecting flange (10) located at the gas inlet.

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