Hot air drying device for SCR denitration catalyst

Abstract

The utility model discloses a kind of hot air drying devices of SCR denitration catalyst, it is related to hot air drying device technical field, including work platform, the right side surface of the work platform is equipped with second motor, the output shaft of the left direction of second motor is connected with threaded rod by coupling, the outside surface of threaded rod is equipped with internal thread block with screw thread, the upper surface of internal thread block is fixedly connected with jet ring, the upper surface of work platform is fixedly connected with bracket in left and right sides, the right side surface of right part bracket is equipped with first motor, the output shaft of the left direction of first motor is connected with rotating rod by coupling. The utility model is by being provided with jet ring and air jet, the air jet of annular arrangement is set on jet ring, so that the distance of SCR denitration catalyst in jet ring center, close to air jet is same, avoid SCR denitration catalyst excessive drying and drying deficiency phenomenon, improve drying quality.

Description

Technical Field

[0001] This utility model relates to the technical field of hot air drying devices, specifically a hot air drying device for SCR denitrification catalyst. Background Technology

[0002] In the field of industrial flue gas treatment, selective catalytic reduction (SCR) denitrification technology is widely used in industries such as power, chemical, and metallurgy due to its highly efficient nitrogen oxide removal capabilities. As the core component of this technology, the SCR denitrification catalyst undergoes key processes such as molding, drying, and calcination during its preparation. Among these, the hot air drying process directly affects the catalyst's mechanical strength, active component distribution, and service life. To ensure that the catalyst avoids cracking and deformation during moisture removal, a hot air drying device is needed to achieve a uniform temperature and controllable airflow environment. Therefore, a highly efficient and stable hot air drying device is crucial equipment for ensuring the quality of SCR denitrification catalyst products.

[0003] The existing equipment uses a single straight-tube hot air delivery duct with a fixed air outlet at the end of the duct. This causes the hot air to be concentrated and the air velocity to be too high in the area near the air outlet, which can easily lead to localized over-drying of the catalyst. Meanwhile, the hot air in the area far from the air outlet decays quickly and the flow rate is insufficient, resulting in residual moisture in the catalyst. The existing support frames are mostly one-piece fixed structures with non-adjustable spacing. When processing catalysts of different sizes, it is impossible to achieve a tight and reasonable arrangement. In addition, the support frames lack a rotating mechanism, and the catalyst can only receive hot air by sitting still. For catalysts with complex pore structures, it is difficult for the inside and bottom to make sufficient contact with the hot air, resulting in a "dry outside and wet inside" phenomenon. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a hot air drying device for SCR denitrification catalysts, which solves the problems mentioned in the background section.

[0005] (II) Technical Solution To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a working platform, a second motor is installed on the right side of the working platform, the output shaft of the second motor in the left direction is connected to a threaded rod through a coupling, an internal threaded block is threadedly connected to the outer side of the threaded rod, and an air jet ring is fixedly connected to the top of the internal threaded block; The working platform is fixedly connected to the left and right sides of the top. A first motor is installed on the right side of the right support. The output shaft of the first motor in the left direction is connected to a rotating rod through a coupling. A slide cylinder is slidably connected to the outer side of the rotating rod. A clamping plate is fixedly connected to the side of the slide cylinder near the jet ring.

[0006] Optionally, a fan is connected to the front and rear parts of the work platform by screws, and a ventilation hose is fixedly connected to the outer side of the air outlet of the fan. The other end of the ventilation hose is fixedly connected to the outer side of the air jet ring.

[0007] Optionally, an air inlet pipe is fixedly connected to the outer side of the air inlet of the fan, and an electric heating wire is provided on the inner side of the air inlet pipe.

[0008] Optionally, the jet ring has an air chamber inside, and the inner wall of the jet ring has a jet port that communicates with the air chamber. The air chamber is also connected to the ventilation hose.

[0009] Optionally, the outer sides of both ends of the threaded rod are connected to the working platform via bearings, and support legs are fixedly connected to the four lower corners of the working platform.

[0010] Optionally, the inner side of one end of the rotating rod inside the bracket is connected to the bracket via a bearing, and a slider is fixedly connected to the outer side of the end of the rotating rod away from the bracket. A groove is provided on the inner wall of the slide cylinder, and the slider slides on the inner side of the groove. An internal threaded ring abuts against the side of the slide cylinder near the bracket, and the inner side of the internal threaded ring is threadedly connected to the rotating rod.

[0011] This invention provides a hot air drying device for SCR denitration catalyst, which has the following beneficial effects: 1. The hot air drying device for the SCR denitrification catalyst, by setting up a jet ring and jet nozzles, and the jet nozzles arranged in a ring on the jet ring, ensures that the distance between the SCR denitrification catalyst and the jet nozzle is the same when it is in the center of the jet ring, thus avoiding the phenomenon of over-drying and under-drying of the SCR denitrification catalyst and improving the drying quality.

[0012] 2. The hot air drying device for the SCR denitrification catalyst, by setting a first motor, clamp, rotating rod, slider and chute, can fix SCR denitrification catalysts of different sizes and can make the SCR denitrification catalyst rotate, so that the SCR denitrification catalyst can fully contact the hot air and fully dry the SCR denitrification catalyst. Attached Figure Description

[0013] Figure 1 This is a frontal three-dimensional structural diagram of the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention from the front view. Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0014] In the diagram: 1. Jet ring; 2. Slide cylinder; 3. Fan; 4. Inlet pipe; 5. First electric motor; 6. Working platform; 7. Second electric motor; 8. Internal threaded ring; 9. Support; 10. Ventilation hose; 11. Jet nozzle; 12. Threaded rod; 13. Support leg; 14. Internal threaded block; 15. Heating wire; 16. Clamping plate; 17. Rotating rod; 18. Slider; 19. Slide groove; 20. Air chamber. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example Please see Figures 1 to 3 This utility model provides a hot air drying device for SCR denitrification catalyst, including a working platform 6. A second motor 7 is installed on the right side of the working platform 6. The output shaft of the second motor 7 in the left direction is connected to a threaded rod 12 through a coupling. An internal threaded block 14 is threadedly connected to the outer side of the threaded rod 12. An air jet ring 1 is fixedly connected to the top of the internal threaded block 14. The work platform 6 is fixedly connected to the left and right sides of the top. The right side of the right support 9 is equipped with the first motor 5. The output shaft of the first motor 5 in the left direction is connected to the rotating rod 17 through the coupling. The outer side of the rotating rod 17 is slidably connected to the slide cylinder 2. The side of the slide cylinder 2 near the jet ring 1 is fixedly connected to the clamp 16.

[0017] Specifically, the inner diameter of the jet ring 1 is adapted to the diameter of common SCR denitrification catalysts, the clamping surface of the chuck 16 is made of high-temperature resistant rubber to avoid scratching the catalyst and enhance friction, the maximum clamping force is to ensure that the catalyst does not slip when rotating, and the sliding adjustment range of the slide cylinder 2 and the rotating rod 17 is adapted to catalysts of different lengths.

[0018] Please refer to Figure 1 to Figure 3 The front and rear parts of the working platform 6 are connected to the fan 3 by screws. The outer side of the air outlet of the fan 3 is fixedly connected to the air hose 10, and the outer side of the other end of the air hose 10 is fixedly connected to the air jet ring 1.

[0019] Specifically, the ventilation hose 10 is made of high-temperature resistant silicone, and its length is adapted to the left and right movement range of the air jet ring 1.

[0020] Please refer to Figure 3. An air inlet pipe 4 is fixedly connected to the outer side of the air inlet of the fan 3, and an electric heating wire 15 is provided on the inner side of the air inlet pipe 4.

[0021] Specifically, the heating wire 15 is made of nickel-chromium alloy and is spirally wound around the inner wall of the intake pipe 4, with a length that accounts for the entire length of the intake pipe 4, to ensure that the air is fully heated.

[0022] Please refer to Figure 3. An air chamber 20 is provided inside the jet ring 1. An air port 11 is provided on the inner wall of the jet ring 1. The air port 11 is connected to the air chamber 20. The air chamber 20 is connected to the ventilation hose 10.

[0023] Specifically, the jet direction of jet nozzle 11 is obliquely towards the center of the ring.

[0024] Please refer to Figure 1 to Figure 3 The outer sides of both ends of the threaded rod 12 are connected to the working platform 6 through bearings, and the four corners of the working platform 6 are fixedly connected to support legs 13.

[0025] Please refer to Figure 3 to Figure 4 The inner side of one end of the rotating rod 17 inside the bracket 9 is connected to the bracket 9 via a bearing. The outer side of the rotating rod 17 away from the bracket 9 is fixedly connected to a slider 18. The inner wall of the slide cylinder 2 is provided with a groove 19. The slider 18 slides on the inner side surface of the groove 19. The side of the slide cylinder 2 near the bracket 9 is abutted by an internal threaded ring 8. The inner side of the internal threaded ring 8 is threadedly connected to the rotating rod 17.

[0026] Specifically, the fit tolerance between slider 18 and groove 19 is 0.1-0.3mm to ensure smooth sliding without radial wobble.

[0027] In use, the SCR denitrification catalyst is placed between the two clamping plates 16, and then the clamping plates 16 are pulled to clamp the SCR denitrification catalyst, thereby causing the slide cylinder 2 to slide on the rotating rod 17. The slider 18 slides and connects to the inner side of the slide groove 19. Then the internal threaded ring 8 is rotated to press against the slide cylinder 2. Then the blower 3, heating wire 15, first motor 5 and second motor 7 are started. The heating wire 15 heats the air entering the air intake pipe 4. Then the blower 3 raises the hot air in the air intake pipe 4 and sends it into the air chamber 20 through the ventilation hose 10. Then the hot air in the air chamber 20 is then circulated through the ventilation hose 10. The gas is sprayed through the nozzle 11 and acts on the SCR denitrification catalyst to dry it. At the same time, the second motor 7 drives the threaded rod 12 to rotate. The threaded connection between the threaded rod 12 and the internal threaded block 14 causes the internal threaded block 14 to move left and right, which in turn drives the jet ring 1 to move left and right, drying the SCR denitrification catalyst at different positions. Meanwhile, the first motor 5 drives the rotating rod 17 to rotate. The rotating rod 17 drives the sliding cylinder 2 to rotate through the slider 18. The sliding cylinder 2 then drives the SCR denitrification catalyst to rotate through the clamp 16, drying the SCR denitrification catalyst.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hot air drying device for SCR denitration catalyst, comprising a working platform (6), characterized in that: The right side of the working platform (6) is equipped with a second motor (7). The output shaft of the second motor (7) in the left direction is connected to a threaded rod (12) through a coupling. The outer side of the threaded rod (12) is threaded with an internal threaded block (14). An air jet ring (1) is fixedly connected to the top of the internal threaded block (14). The working platform (6) is fixedly connected to the left and right sides of the top with brackets (9). The right side of the bracket (9) is equipped with a first motor (5). The output shaft of the first motor (5) in the left direction is connected to a rotating rod (17) through a coupling. The outer side of the rotating rod (17) is slidably connected to a slide cylinder (2). The side of the slide cylinder (2) near the jet ring (1) is fixedly connected to a clamp (16). 2.The hot air drying device for SCR denitration catalysts of claim 1, characterized in that: The front and rear parts of the working platform (6) are connected to a fan (3) by screws. A ventilation hose (10) is fixedly connected to the outer side of the air outlet of the fan (3). The other end of the ventilation hose (10) is fixedly connected to the outer side of the air jet ring (1). 3.The hot air drying device for SCR denitration catalysts of claim 2, characterized in that: An air inlet pipe (4) is fixedly connected to the outer side of the air inlet of the fan (3), and an electric heating wire (15) is provided on the inner side of the air inlet pipe (4).

4. The hot air drying device for an SCR denitration catalyst according to claim 1, characterized in that: The air chamber (20) is provided inside the air jet ring (1), and an air jet port (11) is provided on the inner wall of the air jet ring (1). The air jet port (11) is connected to the air chamber (20), and the air chamber (20) is connected to the ventilation hose (10).

5. The hot air drying device for SCR denitration catalyst according to claim 1, characterized in that: The outer sides of both ends of the threaded rod (12) are connected to the working platform (6) via bearings, and the four corners of the working platform (6) are fixedly connected with support legs (13). 6.The hot air drying device for SCR de-NOx catalyst according to claim 1, characterized in that: The inner side of the rotating rod (17) at one end inside the bracket (9) is connected to the bracket (9) via a bearing. The outer side of the rotating rod (17) away from the bracket is fixedly connected to a slider (18). The inner wall of the slide cylinder (2) is provided with a slide groove (19). The slider (18) slides on the inner side of the slide groove (19). The side of the slide cylinder (2) near the bracket (9) is abutted by an internal threaded ring (8). The inner side of the internal threaded ring (8) is threadedly connected to the rotating rod (17).

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