Integral type SCR (Selective Catalytic Reduction) denitration catalyst coating device

Abstract

The utility model discloses an integral type SCR (Selective Catalytic Reduction) denitration catalyst coating device which comprises an infiltration bin, a groove body is arranged in the infiltration bin, a circle of shelving frame used for shelving the groove body and erecting the groove body is arranged in the infiltration bin, a plurality of partition plates are arranged in the groove body, and the groove body is divided into a plurality of longitudinal channels used for loading catalyst units by the partition plates. The bottom of the longitudinal channel is of a net-shaped structure. In the coating production stage, coating liquid enters the longitudinal channels through the net-shaped structure to coat the catalytic units in the tank body, and the tank body is divided into a plurality of longitudinal channels by the separators, so that the coating efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of SCR denitration catalysts, in particular to an integral SCR denitration catalyst coating device. Background Art

[0002] In the production of denitration catalysts, more than about 90% of industrial catalysts are mostly solid-phase integral structures, that is, the surface phase and bulk phase components and properties of the catalysts are uniform. Due to the integral structure of the catalysts, a large amount of active substances need to be added, resulting in high production costs of the catalysts and gradually decreasing competitive advantages. The coated catalyst has a two-phase structure of an external coating and an internal carrier. The carrier is simple to form, and the added active substances are less. It not only greatly reduces the catalyst cost, but also can be used as a heat storage body or a heat sink, which can effectively buffer the reaction heat, avoid the temperature fluctuation of the catalyst bed layer caused by reaction heat release, and improve the reaction stability. At present, most SCR denitration catalyst coating production lines use special coating equipment for single-root coating, with large investment, low production efficiency, large waste of coating liquid, and complex and difficult-to-operate technological steps.

[0003] The Chinese authorized patent document with the publication number of CN 218742020 U discloses a continuous production device for hardening the end face of a denitration catalyst, which belongs to the technical field of denitration catalyst production. The technical solution includes a belt conveying device, a turnover machine, a belt conveying device, an automatic clamping and conveying robotic arm, an end face hardening tank, an automatic clamping and conveying robotic arm, a draining tank, a blower, a belt conveying device, and a drying and roasting furnace; the belt conveying device is arranged at the front end of the turnover machine; the turnover machine turns the denitration catalyst monomer from a horizontal placement to a vertical placement; the belt conveying device is located behind the turnover machine and in front of the automatic clamping and conveying robotic arm; the automatic clamping and conveying robotic arm is located in front of the end face hardening tank; the automatic clamping and conveying robotic arm is located between the end face hardening tank and the draining tank; the draining tank is arranged behind the end face hardening tank and is used for draining the hardening liquid on the surface of the denitration catalyst monomer; the blower is located directly above the draining tank; the belt conveying device is located behind the draining tank and in front of the drying and roasting furnace. Although this production method is continuous and effective, it does not optimize the production line for multiple catalytic units, resulting in a large equipment investment cost. Especially, the coating production line and the draining production line have many equipment processes, and the actual consumption of the coating liquid is large, resulting in problems such as low coating efficiency and uneven coating. Therefore, it is necessary to develop an integral SCR denitration catalyst coating device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an integral SCR denitration catalyst coating device.

[0005] The innovation point of the utility model is that during the coating stage, the device can carry out coating production with multiple groups of catalytic units, and the coating effect is better through the bubbling system. The recycling of the coating liquid is realized by draining and recycling, saving the production cost.

[0006] To achieve the above-mentioned utility model purpose, the technical solution of the present utility model is: an integral SCR denitration catalyst coating device, which is characterized in that it includes a soaking bin, a tank body is placed in the soaking bin, a placing rack for placing the tank body and lifting the tank body off the ground is arranged in a circle in the soaking bin, a plurality of partition plates are arranged in the tank body, and the partition plates divide the tank body into a plurality of longitudinal channels for loading catalyst units, and the bottom of the longitudinal channels is a mesh structure. The tank body is lifted off the ground in the soaking bin by the placing rack to ensure that there is a certain space between the tank body and the bottom of the soaking bin, so that the coating liquid can be evenly distributed on the catalyst units, improving the coating efficiency; the setting of the partition plates can reasonably partition the inside of the tank body, so that each longitudinal channel can independently load the catalyst units; the mesh structure at the bottom of the longitudinal channels ensures that the liquid can pass through smoothly and provides effective support for the catalyst units, ensuring the uniformity of the coating process.

[0007] Further, a liquid suction hole and a liquid inlet hole are arranged on the side wall of the soaking bin, the liquid suction hole and the liquid inlet hole are connected by a communication pipe on the outer wall of the soaking bin, the liquid suction hole is located above the liquid inlet hole, a bubbling machine is arranged in the middle of the communication pipe, and a liquid injection pipe is also arranged on the outer wall of the soaking bin. The dynamic balance of the coating liquid is maintained by the bubbling machine, promoting the circulation and flow of the liquid, and improving the uniformity of the catalyst unit coating.

[0008] Further, a liquid draining plate is connected to one side of the top of the soaking bin, and the end of the liquid draining plate connected to the soaking bin is slightly inclined downward. The addition of the liquid draining plate design can effectively guide the excess coating liquid back into the soaking bin, preventing liquid waste and achieving the effect of recycling.

[0009] Further, a plurality of support frames are arranged on the liquid draining plate. The coated tank body is lifted by the support frames, so that the remaining coating liquid can flow out smoothly along the longitudinal channels.

[0010] Further, a plurality of limiting members for limiting the tank body are vertically arranged inside the soaking bin, and an inclined section is arranged at the upper end of the limiting member, and the inclined section gradually becomes wider from top to bottom. The offset of the tank body in the soaking bin is ensured by the limiting members; the design that the inclined section gradually becomes wider from top to bottom facilitates the operator to lift and place the tank body, preventing the tank body from getting stuck.

[0011] Further, a plurality of lifting lugs are arranged on the side wall of the tank body. The lifting and moving of the tank body are facilitated by the lifting lugs.

[0012] Further, a plurality of reinforcing members are arranged on the outer wall of the soaking bin. By setting the reinforcing members, the structural stability of the soaking bin is enhanced and the service life is prolonged.

[0013] Furthermore, a conical groove is provided at the bottom of the infiltration chamber, and a sewage discharge pipe is provided at the bottom of the conical groove. By providing the conical groove, it is beneficial to collect the waste liquid and residues at the bottom of the infiltration chamber, and the dirt is discharged in a timely manner through the sewage discharge pipe, reducing the pollution to the coating liquid and facilitating cleaning and maintenance.

[0014] Furthermore, a support mechanism is provided below the infiltration chamber. The support mechanism ensures its stability during operation, prevents deviation caused by vibration or external force, and improves the safety of the equipment.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, the trough body is elevated by the shelving rack to ensure that the coating liquid is evenly distributed on the catalyst unit, improving the coating efficiency; the trough body is divided into multiple longitudinal channels to independently load the catalyst units, enhancing the coating uniformity; the mesh structure at the bottom of the longitudinal channels ensures smooth liquid flow, providing support for the catalyst units while maintaining the coating uniformity.

[0017] 2. In the present utility model, the bubbling machine is used to maintain the dynamic balance of the coating liquid, promote the liquid circulation flow, and improve the coating uniformity of the catalyst unit; the liquid draining plate guides the excess coating liquid to flow back to the infiltration chamber, preventing liquid waste and realizing recycling.

[0018] 3. In the present utility model, a support frame is provided on the liquid draining plate to allow the trough body after coating to naturally drain the residual coating liquid; lifting lugs are provided on the side wall of the trough body to facilitate hoisting and moving, improving the operation convenience; the limiting member is used to ensure the stability of the trough body in the infiltration chamber, and the inclined section design is added to facilitate hoisting and shelving, preventing jamming.

[0019] 4. In the present utility model, the reinforcement members on the outer wall of the infiltration chamber enhance the structural stability and extend the service life; a conical groove is provided at the bottom of the infiltration chamber to collect waste liquid and residues, and the dirt is discharged through the sewage discharge pipe, reducing the pollution to the coating liquid and facilitating cleaning and maintenance; the support mechanism ensures the stability of the infiltration chamber during operation and improves the equipment safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0021] Figure 2 It is a schematic sectional view of the present utility model and a side view of the limiting member.

[0022] Figure 3 It is a schematic diagram of the structure of the trough body of the present utility model.

[0023] In the figure:

[0024] 1. Infiltration bin; 2. Tank body; 3. Shelf; 4. Partition board; 5. Longitudinal channel; 6. Mesh structure; 71. Liquid suction hole; 72. Liquid inlet hole; 8. Connecting pipe; 9. Bubbling machine; 10. Liquid injection pipe; 11. Liquid draining plate; 12. Support frame; 13. Limiting part; 14. Inclined section; 15. Lifting lug; 16. Reinforcement; 17. Conical groove; 18. Sewage discharge pipe; 19. Support mechanism. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] Embodiment 1: As Figure 1 , 2 , and shown in FIG. 3, an integral SCR denitration catalyst coating device includes an infiltration bin 1, in which a tank body 2 is placed. There is a circle of shelves 3 in the infiltration bin 1 for placing the tank body 2 and lifting the tank body 2 off the ground. There are several partition boards 4 in the tank body 2, and the partition boards 4 divide the tank body 2 into several longitudinal channels 5 for loading catalyst units. The bottom of the longitudinal channel 5 is a mesh structure 6. The side wall of the infiltration bin 1 is provided with a liquid suction hole 71 and a liquid inlet hole 72. The liquid suction hole 71 is connected to the liquid inlet hole 72 through a connecting pipe 8 on the outer wall of the infiltration bin 1. The liquid suction hole 71 is above the liquid inlet hole 72, and a bubbling machine 9 is arranged in the middle of the connecting pipe 8. The outer wall of the infiltration bin 1 is also provided with a liquid injection pipe 10. One side of the top of the infiltration bin 1 is connected with a liquid draining plate 11, and the end of the liquid draining plate 11 connected to the infiltration bin 1 is slightly inclined downward. There are several support frames 12 on the liquid draining plate 11. Several limiting parts 13 for limiting the tank body 2 are vertically arranged inside the infiltration bin 1. The upper end of the limiting part 13 is provided with an inclined section 14, and the inclined section 14 gradually becomes wider from top to bottom. There are several lifting lugs 15 on the side wall of the tank body 2. There are several reinforcements 16 on the outer wall of the infiltration bin 1. The bottom of the infiltration bin 1 is provided with a conical groove 17, and a sewage discharge pipe 18 is arranged at the bottom of the conical groove 17. A support mechanism 19 is arranged below the infiltration bin 1.

[0027] The working principle of the present utility model is as follows: When conducting the coating production of the catalyst unit, several catalyst monomers are sequentially placed into the corresponding longitudinal channels 5 in the tank body 2. The movement of the tank body 2 is realized by using the lifting lugs 15 on the side wall of the tank body 2. The tank body 2 is placed into the infiltration chamber 1, and the placing rack 3 holds up the tank body 2 in the infiltration chamber 1. The side wall of the tank body 2 is in contact with the limiting member 13 to ensure the stability of the tank body 2 during the liquid immersion process. Coating liquid is injected into the injection pipeline 10. After the coating liquid enters the infiltration chamber 1, it enters the catalyst unit in the longitudinal channel 5 through the mesh structure 6 at the bottom of the tank body 2 for coating. In order to make the coating sufficient, the connecting pipeline 8 sucks the coating liquid from the liquid suction hole 71 into the bubbling machine 9 and then injects it into the infiltration chamber 1 through the liquid inlet hole 8. The bubbling machine 9 can accelerate the circulation and flow of the coating liquid, enabling it to contact the catalyst unit faster in the infiltration chamber 1 and improving the coating efficiency. After the coating is completed, the tank body 2 is lifted and placed on the support frame 12 on the liquid draining plate 11 for liquid draining. The coating liquid flows naturally down along the longitudinal channel 5 and is guided into the infiltration chamber 1 through the liquid draining plate 11 for recycling. The sewage discharge pipeline 18 at the bottom of the conical tank 17 is opened to release the waste liquid and residues.

[0028] In summary, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. An integral SCR denitration catalyst coating device, characterized in that, It includes a soaking bin, in which a trough body is placed. There is a circle of shelving racks in the soaking bin for placing the trough body and lifting the trough body off the ground. There are several partition plates in the trough body, and the partition plates divide the trough body into several longitudinal channels for loading catalyst units. The bottom of the longitudinal channel is a mesh structure.

2. The integral SCR denitration catalyst coating device according to claim 1, wherein The side wall of the soaking bin is provided with a liquid suction hole and a liquid inlet hole. The liquid suction hole and the liquid inlet hole are connected by a connecting pipe on the outer wall of the soaking bin. The liquid suction hole is located above the liquid inlet hole. A bubbling machine is arranged in the middle of the connecting pipe. The outer wall of the soaking bin is also provided with a liquid injection pipe.

3. The integral SCR denitration catalyst coating device according to claim 1, wherein, One side of the top of the soaking bin is connected with a liquid draining plate, and the end of the liquid draining plate connected to the soaking bin is slightly inclined downward.

4. The integral SCR denitration catalyst coating device according to claim 3, characterized in that, Several support frames are arranged on the liquid draining plate.

5. The integral SCR denitration catalyst coating device according to claim 1, characterized in that, Several limiting members for limiting the trough body are vertically arranged inside the soaking bin. The upper end of the limiting member is provided with an inclined section, and the inclined section gradually becomes wider from top to bottom.

6. The integral SCR denitration catalyst coating device according to claim 1, wherein Several lifting lugs are arranged on the side wall of the trough body.

7. The integral SCR denitration catalyst coating device according to claim 1, characterized in that, Several reinforcing members are arranged on the outer wall of the soaking bin.

8. The integral SCR denitration catalyst coating device according to claim 1, characterized in that A conical groove is arranged at the bottom of the soaking bin, and a sewage discharge pipe is arranged at the bottom of the conical groove.

9. The integral SCR denitration catalyst coating device according to claim 1, wherein A support mechanism is arranged below the soaking bin.

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