Efficient SCR denitration catalyst cleaning device

Abstract

The utility model relates to the technical field of SCR denitration catalyst cleaning, in particular to an efficient SCR denitration catalyst cleaning device which comprises a cleaning frame, and a hydraulic cylinder is fixedly connected to the upper end of the surface of the cleaning frame. The anti-attachment mechanism comprises a hollow frame fixedly connected to the bottom end of the hydraulic cylinder; according to the device, most impurities separated from a catalyst during cleaning can be discharged out of the hollow-out frame through the hollow-out frame and the liquid discharging holes, so that the coverage area of the impurities in the hollow-out frame is reduced, the bottom of the catalyst is supported through the supporting rods, and the impurities separated from the catalyst can be conveniently discharged through the liquid discharging holes; compared with an existing mode that impurities in an inactivated SCR denitration catalyst containing bin are prone to being attached to the catalyst for the second time, according to the mode, the impurities left in the hollowed-out frame are reduced, the impurities left in the hollowed-out frame are discharged, then the impurities are prevented from being attached to the catalyst for the second time, and the cleaning effect on the SCR denitration catalyst is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of SCR denitrification catalyst cleaning technology, and in particular to a high-efficiency SCR denitrification catalyst cleaning device. Background Technology

[0002] SCR (Selective Catalytic Reduction) denitrification technology is widely used in industrial fields such as coal-fired power plants, steel mills, and chemical plants to reduce nitrogen oxide emissions in flue gas. During long-term operation of SCR denitrification systems, the catalyst's activity can decrease due to fly ash deposition, chemical poisoning, and other factors, thus affecting denitrification efficiency. Therefore, cleaning devices are needed to clean and regenerate the SCR denitrification catalyst, thereby extending its service life and reducing operating costs.

[0003] A search revealed that the Chinese patent "An Ultrasonic Cleaning and Dust Removal System for Deactivated SCR Denitrification Catalyst" (authorization announcement number CN220127041U) utilizes a cylinder, servo motor, gear one, rotating shaft, gear two, support plate, upright, and a deactivated SCR denitrification catalyst holding chamber with through holes on its surface. This system rotates the holding chamber, causing the deactivated SCR denitrification catalyst inside to collide with water, thereby facilitating and accelerating the removal of dust from the surface of the deactivated SCR denitrification catalyst and improving cleaning efficiency.

[0004] In the aforementioned application, because the surface of the deactivated SCR denitrification catalyst holding chamber is cylindrical, during the rinsing process, impurities washed off from the catalyst surface may easily adhere to the inner wall of the deactivated SCR denitrification catalyst holding chamber due to centrifugal force or the dynamics of water flow. This can easily lead to the impurities in the deactivated SCR denitrification catalyst holding chamber re-attaching to the catalyst, thereby affecting the cleaning effect on the catalyst.

[0005] Therefore, a high-efficiency SCR denitrification catalyst cleaning device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency SCR denitrification catalyst cleaning device to solve the above-mentioned problems, thereby improving the problem that impurities in the storage chamber of deactivated SCR denitrification catalyst are easily re-attached to the catalyst.

[0007] This utility model achieves the above-mentioned objectives through the following technical solution: a high-efficiency SCR denitrification catalyst cleaning device, comprising: a cleaning frame, wherein a hydraulic cylinder is fixedly connected to the upper surface of the cleaning frame; an anti-adhesion mechanism, wherein the anti-adhesion mechanism includes a hollow frame fixedly connected to the bottom of the hydraulic cylinder, wherein the bottom of the hollow frame is provided with equally spaced drainage holes, the inner wall of the drainage holes is recessed in a funnel shape, and a plurality of support rods and partition rods are fixedly connected to the inner bottom wall of the hollow frame, and a limiting frame is provided inside the hollow frame. Through the hollow frame and drainage holes, most of the impurities detached from the catalyst during cleaning are discharged into the hollow frame, thereby reducing the area covered by impurities inside the hollow frame. The support rods provide support for the bottom of the catalyst, facilitating the discharge of impurities detached from the catalyst through the drainage holes, thus preventing the cleaned impurities from failing to discharge into the hollow frame, thereby preventing impurities from adhering to the catalyst again, ensuring the cleaning effect of the SCR denitrification catalyst; and the partition rods and limiting frame limit the catalyst placed inside the hollow frame, ensuring that the catalyst is stably positioned inside the hollow frame.

[0008] Preferably, two guide rods are fixedly connected to the end of the hollow frame, and the inner wall of the limiting frame is slidably connected to the surface of the guide rods. The guide rods limit the movement of the limiting frame and prevent it from shifting during movement.

[0009] Preferably, a spring is fixedly connected to the opposite end of the limiting frame and the guide rod. The spring allows the limiting frame to be pushed down, initially limiting the catalyst.

[0010] Preferably, a retaining bracket is slidably connected to the upper end of the inner wall of the limiting frame, and the surface of the retaining bracket is engaged with the lower end of the surface of the guide rod. The retaining bracket locks the limiting frame, ensuring stable positioning of the catalyst.

[0011] Preferably, one side of the support rod has an evenly spaced array of inclined blocks fixedly connected to its surface, and the bottom of each inclined block is fixedly connected to the inner bottom wall of the hollow frame. The inclined blocks provide initial guidance for the catalyst placed within the hollow frame, allowing the catalyst to be smoothly pushed onto the support rod surface.

[0012] Preferably, a sliding rod is fixedly connected to the rear end of the card holder, and the surface of the sliding rod is slidably connected to the upper end of the inner wall of the limiting frame. The sliding rod restricts the movement range of the card holder, preventing it from detaching from the upper end of the inner wall of the limiting frame during movement.

[0013] Preferably, a waterproof sleeve is fixedly connected to the opposite end of the limiting frame and the guide rod, and the surface of the spring is located inside the waterproof sleeve. The waterproof sleeve protects the spring and prevents liquid from soaking into the spring surface.

[0014] The beneficial effects of this utility model are:

[0015] 1. By using a perforated frame and drainage holes, most of the impurities detached from the catalyst during cleaning are discharged into the perforated frame, thereby reducing the area covered by impurities inside the perforated frame. The support rods provide support for the bottom of the catalyst, facilitating the discharge of impurities detached from the catalyst through the drainage holes. Compared to existing catalysts that are easily re-attached by impurities in the deactivated SCR denitrification catalyst storage chamber, this method reduces the amount of impurities remaining inside the perforated frame and discharges the impurities remaining inside the perforated frame, thereby preventing impurities from adhering to the catalyst again and ensuring the cleaning effect of the SCR denitrification catalyst.

[0016] 2. By using a partition rod and a limiting frame, the catalyst placed inside the hollow frame is limited, ensuring that the catalyst is stably located inside the hollow frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the cleaning frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the anti-attachment mechanism of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of A in the middle.

[0021] In the diagram: 1. Cleaning frame; 2. Hydraulic cylinder; 3. Anti-attachment mechanism; 31. Hollow frame; 32. Support rod; 33. Drain hole; 34. Partition rod; 35. Limiting frame; 36. Guide rod; 37. Inclined block; 38. Spring; 39. Card holder; 310. Waterproof sleeve; 311. Slide rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figure 1-4As shown, a high-efficiency SCR denitrification catalyst cleaning device includes: a cleaning frame 1, with a hydraulic cylinder 2 fixedly connected to the upper surface of the cleaning frame 1; an anti-attachment mechanism 3, which includes a hollow frame 31 fixedly connected to the bottom of the hydraulic cylinder 2, with equally spaced drainage holes 33 at the bottom of the hollow frame 31, the inner wall of the drainage holes 33 being recessed in a funnel shape, and a number of support rods 32 and partition rods 34 fixedly connected to the inner bottom wall of the hollow frame 31, and a limiting frame 35 provided inside the hollow frame 31.

[0024] An ultrasonic generator is installed at the lower end of the surface of the cleaning frame 1. The rear end of the ultrasonic generator is connected to two transducers. The surface of the transducers is fixedly connected to the bottom of the cleaning frame 1. Liquid storage tanks are fixedly connected to both the front and rear ends of the cleaning frame 1. A water pump is connected to the top of the liquid storage tank. Two high-pressure water pipes are connected to the upper end of the inner wall of the cleaning frame 1. One end of the water pump is connected to the inner wall of the high-pressure water pipe. An outlet pipe is connected to the bottom of the cleaning frame 1.

[0025] When cleaning the SCR denitrification catalyst, connect the outlet pipe to the corresponding treatment pipe via flange or thread. Close the valve on the treatment pipe and add a certain amount of organic solution, such as ethanol, into the cleaning frame 1. Place the catalyst onto the surface of the support rod 32 through the opening at the front of the perforated frame 31. Due to the obstruction of the limiting frame 35, each catalyst will not stick together. At this time, manually activate the ultrasonic generator and hydraulic cylinder 2. The extension end of the hydraulic cylinder 2 moves downward, causing the perforated frame 31 to move into the ethanol. The ultrasonic generator will then generate a high-frequency electrical signal, which is transmitted to the transducer. The transducer converts these high-frequency electrical signals... The ultrasonic vibration is then transmitted to the ethanol in the cleaning frame 1 via high-frequency mechanical vibration, causing the liquid to form tiny cavities or bubbles. During the compression stage, these bubbles will quickly close, generating a strong impact force and high temperature. This strong impact force can act on impurities on the catalyst surface and in the internal pores, causing the impurities to detach from the catalyst surface. For example, dust, oil, metal oxides and other contaminants attached to the catalyst surface will be broken and dispersed into the cleaning liquid under the impact force generated by the cavitation effect. The dispersed impurities are discharged through the open hollow frame 31 and the funnel-shaped drain hole 33.

[0026] After cleaning, manually open hydraulic cylinder 2 to move the hollow frame 31 up a certain height inside the cleaning frame 1. Then manually close hydraulic cylinder 2 and turn on water pump. The water pump draws cleaning liquid, such as ethanol, from the storage tank to perform high-pressure rinsing on the hollow frame 31 and the catalyst. After rinsing, manually turn off water pump and open hydraulic cylinder 2 to remove the hollow frame 31 from the liquid. Then the cleaned catalyst can be taken out and placed inside the hollow frame 31.

[0027] like Figure 4As shown, two guide rods 36 are fixedly connected to the end of the hollow frame 31. The inner wall of the limiting frame 35 is slidably connected to the surface of the guide rods 36. A spring 38 is fixedly connected to the opposite end of the limiting frame 35 and the guide rods 36. A clip 39 is slidably connected to the upper end of the inner wall of the limiting frame 35. The surface of the clip 39 is engaged with the lower end of the surface of the guide rods 36. A slide rod 311 is fixedly connected to the rear end of the clip 39. The surface of the slide rod 311 is slidably connected to the upper end of the inner wall of the limiting frame 35. A waterproof sleeve 310 is fixedly connected to the opposite end of the limiting frame 35 and the guide rods 36. The surface of the spring 38 is located inside the waterproof sleeve 310. The waterproof sleeve 310 is an ethylene propylene rubber component.

[0028] The elastic force of the spring 38 pushes the limiting frame 35 down to the top of the catalyst holder. At this time, it pushes the clamp 39, causing the clamp 39 to move the slide bar 311 within the limiting frame 35 and engage with the guide rod 36, thereby making the limiting frame 35 stably limit the catalyst.

[0029] like Figure 3 As shown, one of the support rods 32 has an evenly distributed array of inclined blocks 37 fixedly connected to its surface, and the bottom of the inclined blocks 37 is fixedly connected to the inner bottom wall of the hollow frame 31.

[0030] In use, the catalyst is quickly guided to the surface of the support rod 32 through the opening at the front end of the hollow frame 31 via the inclined block 37. Due to the obstruction of the limiting frame 35, each catalyst is not stuck together. The elastic force of the spring 38 pushes the limiting frame 35 down to the top of the catalyst holder. At this time, the clamping bracket 39 is pushed, causing the clamping bracket 39 to move the sliding rod 311 within the limiting frame 35 and engage with the guide rod 36, thereby stabilizing the limiting frame 35 to limit the catalyst. At this time, the ultrasonic generator and hydraulic cylinder 2 are manually activated. The telescopic end of the hydraulic cylinder 2 moves down, causing the hollow frame 31 to move into the ethanol. At this time, the ultrasonic generator generates a high-frequency electrical signal, which is transmitted to... On the transducer, these high-frequency electrical signals are converted into high-frequency mechanical vibrations, which are then transmitted to the ethanol in the cleaning frame 1, causing the liquid to form tiny cavities or bubbles. During the compression stage, these bubbles will quickly close, generating a strong impact force and high temperature. This strong impact force can act on impurities on the catalyst surface and in the internal pores, causing the impurities to detach from the catalyst surface. For example, dust, oil, metal oxides and other contaminants attached to the catalyst surface will be broken and dispersed into the cleaning liquid under the impact force generated by the cavitation effect. The dispersed impurities are discharged through the open hollow frame 31 and the funnel-shaped drain hole 33.

[0031] It should be noted that the cleaning frame 1, hydraulic cylinder 2, hollow frame 31, water pump, ultrasonic generator and transducer mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the hydraulic cylinder 2, water pump, ultrasonic generator and transducer can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency SCR denitrification catalyst cleaning device, characterized in that, include: A cleaning frame (1) is provided, and a hydraulic cylinder (2) is fixedly connected to the upper surface of the cleaning frame (1). Anti-attachment mechanism (3), the anti-attachment mechanism (3) includes a hollow frame (31) fixedly connected to the bottom end of the hydraulic cylinder (2), the bottom of the hollow frame (31) is provided with equally distributed drainage holes (33), the inner wall of the drainage holes (33) is recessed in the shape of a funnel, the inner bottom wall of the hollow frame (31) is fixedly connected with several support rods (32) and partition rods (34), and the interior of the hollow frame (31) is provided with a limiting frame (35).

2. The high-efficiency SCR denitrification catalyst cleaning device according to claim 1, characterized in that: Two guide rods (36) are fixedly connected to the end of the hollow frame (31), and the inner wall of the limiting frame (35) is slidably connected to the surface of the guide rods (36).

3. The high-efficiency SCR denitrification catalyst cleaning device according to claim 1, characterized in that: A spring (38) is fixedly connected to the opposite end of the limiting frame (35) and the guide rod (36).

4. The high-efficiency SCR denitrification catalyst cleaning device according to claim 1, characterized in that: The upper end of the inner wall of the limiting frame (35) is slidably connected to a card holder (39), and the surface of the card holder (39) is engaged with the lower end of the surface of the guide rod (36).

5. The high-efficiency SCR denitrification catalyst cleaning device according to claim 1, characterized in that: One of the support rods (32) has an evenly distributed array of inclined blocks (37) fixedly connected to its surface, and the bottom of the inclined blocks (37) is fixedly connected to the inner bottom wall of the hollow frame (31).

6. The high-efficiency SCR denitrification catalyst cleaning device according to claim 4, characterized in that: The rear end of the card holder (39) is fixedly connected to a slide rod (311), and the surface of the slide rod (311) is slidably connected to the upper end of the inner wall of the limiting frame (35).

7. The high-efficiency SCR denitrification catalyst cleaning device according to claim 3, characterized in that: The limiting frame (35) and the guide rod (36) are fixedly connected to a waterproof sleeve (310), and the surface of the spring (38) is located inside the waterproof sleeve (310).

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