Drying system and process for preparing denitration catalyst

Abstract

The invention discloses a drying system and process for preparing a denitration catalyst in the technical field of catalyst preparation, the drying system comprises a shell and a plurality of drying assemblies arranged in the shell in the vertical direction, driving assemblies are arranged on the left side and the right side of the interior of the shell, a plurality of plate frames are arranged in the shell, and the driving assemblies are arranged on the left side and the right side of the interior of the shell. The plate frame is used for placing a flat plate; according to the drying device, when the drying assembly conducts drying, the interior of the shell can be divided into the independent drying cavities by the multiple adjacent sealing plates, each plate frame is located in the corresponding drying cavity, and therefore hot air can move in the drying cavities when the drying assembly conducts drying in the shell; therefore, the phenomenon that the catalyst flat plate to be dried is dried unevenly and pug is blown off to the flat plate on the lower layer due to the fact that the hot air forms large turbulent flow in the shell can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of catalyst preparation, and in particular to a drying system and process for preparing a denitration catalyst. Background Art

[0002] Flat-plate catalysts have great advantages in preventing fly ash blockage, resisting wear and poisoning, and are particularly suitable for my country's national conditions such as unstable coal types in coal-fired power plants and high dust content in coal-fired flue gas. Therefore, they occupy a large market share in my country's flue gas denitrification projects.

[0003] See also Figure 1 After the mud (a mud mixture with TiO2 as a carrier, V205 as the main active ingredient, and WO3 and M003 as antioxidant and anti-toxic auxiliary ingredients) is coated on the surface of the expanded mesh to form a flat plate, the flat plate needs to be dried to facilitate subsequent shearing.

[0004] When forming a flat plate, the clay material is often required to have a certain fluidity to facilitate the clay material to be wrapped around the steel wire. However, in order to achieve better consistency of different plates, traditional drying equipment stacks and arranges multiple plates in a drying chamber. This will result in: on the one hand, the fluidity of the clay material will cause the clay material of the upper plate to drip to the lower plate in the early stage of drying, thereby causing a chain reaction, resulting in a decrease in the porosity and quality of the lower plate; on the other hand, when multiple plates are placed in the same chamber, turbulence of the hot gas is prone to occur, such as Figure 2 As shown, the airflow blowing from the top to the bottom of the plate easily matches the gravity of the clay, causing it to drip underneath the plate, resulting in an uneven surface on the bottom side of the plate when it is dried. Summary of the Invention

[0005] The object of the present invention is to provide a drying system and process for preparing a denitration catalyst to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A drying system for preparing a denitrification catalyst, comprising a shell and several drying components arranged vertically inside the shell, drive components are provided on the left and right sides of the shell, several plate racks are provided inside the shell, the plate racks are used to place flat plates, and support components are symmetrically arranged on the left and right sides below the plate racks, and the support components include: a sealed plate, the end of the sealed plate is rotatably and slidably arranged inside a slide groove opened on the shell; a push plate, rotatably connected to the sealed plate and slidably arranged on the inner wall of the shell; a support rod, which is provided inside the shell and is used to place the plate rack; the drive component is used to drive the push plate to slide vertically inside the shell.

[0007] As a further solution of the present invention, the driving assembly includes a driving rod, which is slidably connected to the inner wall of the shell, and a cylinder is fixedly connected between the driving rod and the inner wall of the shell, and the driving rod is fixedly connected to several push plates on one side of it.

[0008] As a further solution of the present invention, the support rod is composed of a first placement rack and a second placement rack, the second placement rack is located directly above the push plate and directly in front of the first placement rack, the first placement rack and the second placement rack are at the same height and are used together to support the plate rack; The first and second placement racks are both slidably connected to the limiting grooves, and the limiting grooves are both provided on the inner wall of the housing. When the driving rod descends, the first and second placement racks are driven to slide down along the limiting grooves. A first spring is fixedly connected between the inner wall of the limiting groove and the first and second placement racks. A receiving rod is commonly provided on the left side of the first and second placement racks, the receiving rod being U-shaped, the receiving rod being slidably connected to the inner wall of the shell in the horizontal direction, a second spring being fixedly connected between the receiving rod and the inner wall of the shell, and two wedge blocks being provided on the right side of the receiving rod, the two wedge blocks being fixedly connected to the first and second placement racks respectively; When the first and second placement racks drive the wedge block to descend below the receiving rod, the second spring can push the receiving rod to move toward the middle of the shell under the reset of the second spring, and then the first and second placement racks continue to descend to make the plate rack fall on the receiving rod.

[0009] As a further solution of the present invention, the second placement rack is L-shaped and its front end is rotatably connected to a movable rod, and the rotating shaft sleeve of the movable rod is provided with a torsion spring.

[0010] As a further solution of the present invention, both front and rear ends of the receiving rod are slidably connected to a pressure rod in the vertical direction, the pressure rod is L-shaped, a third spring is fixedly connected between the pressure rod and the inner wall of the receiving rod, and the bottom end of the pressure rod is provided with an integral downward pressing portion; When the plate rack falls on the top end of the receiving rod, the first placement rack and the second placement rack continue to descend, and the pressing portion is pressed down by the movable rod and the end of the first placement rack so that the pressing rod presses down the plate rack.

[0011] As a further solution of the present invention, the side walls of the first placement rack and the second placement rack are both fixedly connected to a blocking rod.

[0012] As a further solution of the present invention, the sealing plates are all slidably connected to sealing plates, and a fourth spring is fixedly connected between the sealing plates and the sealing plates.

[0013] A drying process for preparing a denitration catalyst, the process comprising the following steps: Step 1: Place the catalyst plate inside the plate rack, and then place the plate rack on the first and second racks, so that the first and second racks can make the first rough contact with the dirtier plate rack; Step 2: The shell is divided into multiple chambers by adjacent sealing plates, and then the drying assembly dries the chamber separately, thereby reducing turbulence. The sealing plates can also block possible dripping mud to avoid a chain reaction. Step 3: After the catalyst plate is heated up, the driving assembly drives the push plate to descend and expand the sealing plate to facilitate the overall drying of the catalyst plate; Step 4: When the wedge block drops below the receiving rod, the receiving rod can move to the plate rack to drop to receive the plate rack for the second time, and after the movable rod and the second placement rack press down the pressing part, the pressing rod can press the plate rack down to a state of close fit with the receiving rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when the drying assembly is drying, two adjacent sealed plates will separate the interior of the shell into relatively independent drying chambers, and each plate rack is located in a drying chamber. Therefore, when the drying assembly is drying inside the shell, the hot air will move inside the drying chamber without causing a large movement inside the entire shell, thereby preventing the hot air from forming a large turbulent flow inside the shell, which would cause uneven drying of the catalyst plates to be dried and the mud to be blown onto the plates below. During drying, two adjacent sealed plates are located directly below the plate rack, which can block the middle of the two adjacent catalyst plates to be dried and receive the falling mud, thereby avoiding the mud on the upper plate dripping onto the lower plate in the early stage of drying and causing a chain reaction, resulting in the porosity and quality of the lower plates decreasing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The following is a flow chart of the catalyst manufacturing process; Figure 2 This is a schematic diagram of the traditional drying method with turbulent airflow; Figure 3 It is a schematic diagram of the overall structure of the present invention; Figure 4 for Figure 3 A partial enlarged view of point A in the middle; Figure 5 Schematic diagram of the positional relationship between the sealing plate, the push plate and the receiving rod of the present invention; Figure 6 Schematic diagram of the positional relationship between the driving rod and the limiting groove of the present invention; Figure 7This is a schematic diagram of the present invention when the driving rod descends to drive the sealing plate to tilt; Figure 8 Schematic diagram of the positional relationship among the first placement rack, the second placement rack, the receiving rod and the fourth spring of the present invention; Figure 9 Schematic diagram of the positional relationship between the receiving rod, the movable rod and the pressure rod of the present invention; Figure 10 Schematic diagram of the positional relationship among the third spring, the pressure rod and the downward pressing portion of the present invention.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Shell; 2. Drying assembly; 3. Plate rack; 4. Sealing plate; 5. Push plate; 6. First placement rack; 7. Second placement rack; 8. Driving rod; 9. Cylinder; 10. Limiting groove; 11. First spring; 12. Supporting rod; 13. Second spring; 14. Wedge block; 15. Movable rod; 16. Torsion spring; 17. Pressing rod; 18. Third spring; 19. Lower pressure part; 20. Stop rod; 21. Sealing plate; 22. Fourth spring; 23. Slide; 24. Cabinet door; 25. Catalyst plate to be dried; 26. Drying chamber. DETAILED DESCRIPTION

[0017] See also Figures 1-10 , the present invention provides a technical solution: A drying system for preparing a denitrification catalyst comprises a shell 1 and several drying components 2 arranged vertically inside the shell 1, drive components are provided on the left and right sides of the shell 1, several plate racks 3 are provided inside the shell 1, the plate racks 3 are used to place flat plates, and support components are symmetrically arranged on the left and right sides below the plate racks 3, and the support components comprise: a sealed plate 4, the end of the sealed plate 4 is rotatably and slidably arranged inside a slide groove 23 opened on the shell 1; a push plate 5, rotatably connected to the sealed plate 4 and slidably arranged on the inner wall of the shell 1; a support rod, which is provided inside the shell 1 and is used to place the plate rack 3; and a drive component is used to drive the push plate 5 to slide vertically inside the shell 1.

[0018] The driving assembly includes a driving rod 8, which is slidably connected to the inner wall of the shell 1. A cylinder 9 is fixedly connected between the driving rod 8 and the inner wall of the shell 1. The driving rod 8 is fixedly connected to several push plates 5 on one side.

[0019] like Figure 3-Figure 7 As shown: The housing 1 is hinged with a cabinet door 24 on the outside. The cabinet door 24 is rotated to close and open the housing 1. The catalyst plate 25 to be dried is then placed inside the plate rack 3. The plate rack 3 is then placed on the left and right support rods inside the housing 1. The support rods are aligned to complete the placement of the plate rack 3. Then close the cabinet door 24, and then start the drying component 2 to dry the inside of the housing 1. The drying component 2 is hot air drying, which is common knowledge in the prior art and will not be described in detail. When the drying assembly 2 is drying, two adjacent sealed plates 4 will divide the interior of the shell 1 into relatively separate drying chambers 26, and each plate rack 3 is inside a drying chamber 26. Then, when the drying assembly 2 is drying inside the shell 1, the hot air will move inside the drying chamber 26 without causing a large movement inside the entire shell 1, thereby preventing the hot air from forming a large turbulence inside the shell 1, which will cause uneven drying of the catalyst plates 25 to be dried and the mud to be blown onto the plates below. In addition, when drying, the two adjacent sealed plates 4 are located directly below the plate rack 3, which can block the middle of the two upper and lower adjacent catalyst plates 25 to be dried and can receive the fallen mud, thereby preventing the mud on the upper plate from dripping onto the lower plate in the early stage of drying and causing a chain reaction, resulting in the porosity and quality of the lower plates to decrease. After the plate has been dried for a certain period of time, that is, the plate has been heated up (that is, after the constant humidity and heating stage is completed), it means that the fluidity of the mud on the catalyst plate 25 to be dried is greatly reduced (or the fluidity disappears), then the cylinder 9 is started at this time, the cylinder 9 will extend and drive the driving rod 8 to slide down the inner wall of the shell 1, and the driving rod 8 will drive the ends of several push plates 5 to descend, then the other end of the push plate 5 will rotate inside the chute 23 and move along the chute 23 from the middle of the shell 1 to both sides. When the cylinder 9 is extended to the limit, the driving rod 8 and the push plate 5 have both dropped to the limit. At this time, the top and bottom ends of the closed plate 4 will be in the following position. Figure 7 In the tilted state shown, several drying chambers 26 are opened, and then multiple drying components 2 simultaneously dry the interior of the housing 1. At this time, the fluidity of the sludge on the catalyst plate 25 to be dried is greatly reduced, so there is no need to worry about dripping. After the drying is completed, the cylinder 9 drives the sealing plate 4 to reset, and then the cabinet door 24 is opened and the plate rack 3 is taken out.

[0020] The support rod is composed of a first placement rack 6 and a second placement rack 7. The second placement rack 7 is located directly above the push plate 5 and directly in front of the first placement rack 6. The first placement rack 6 and the second placement rack 7 are at the same height and are used together to support the plate rack 3. The first placement rack 6 and the second placement rack 7 are both slidably connected to the limiting groove 10, and the limiting groove 10 is provided on the inner wall of the housing 1. When the driving rod 8 descends, the first placement rack 6 and the second placement rack 7 will slide down along the limiting groove 10. A first spring 11 is fixedly connected between the inner wall of the limiting groove 10 and the first placement rack 6 and the second placement rack 7. A receiving rod 12 is provided on the left side of the first placement rack 6 and the second placement rack 7. The receiving rod 12 is U-shaped and is slidably connected to the inner wall of the shell 1 in the horizontal direction. A second spring 13 is fixedly connected between the receiving rod 12 and the inner wall of the shell 1. Two wedge blocks 14 are provided on the right side of the receiving rod 12. The two wedge blocks 14 are fixedly connected to the first placement rack 6 and the second placement rack 7 respectively; When the first placement rack 6 and the second placement rack 7 drive the wedge block 14 to descend below the receiving rod 12, the second spring 13 can push the receiving rod 12 to move toward the middle of the shell 1, and then the first placement rack 6 and the second placement rack 7 continue to descend, causing the plate rack 3 to fall on the receiving rod 12.

[0021] like Figures 8-10 As shown: When the plate rack 3 is placed, the left and right sides of the plate rack 3 are respectively on the two first placement racks 6 and the second placement rack 7, and at this time the sealed plate 4 divides the interior of the shell 1 into multiple drying chambers 26. At this time, the catalyst plate 25 to be dried can be dried by the drying assembly 2. When the catalyst plate 25 to be dried is heated up, the cylinder 9 drives the driving rod 8 to slide down inside the shell 1. At this time, the multiple push plates 5 will drive the end of the sealed plate 4 to descend when sliding along the shell 1, and the top of the push plate 5 will contact the bottom of the first placement rack 6 and the second placement rack 7. The push plate 5 blocks the first placement rack 6 and the second placement rack 7 inside the limit groove 10, so that the first spring 11 remains in a compressed state when the push plate 5 does not descend; When the push plate 5 descends, driving the bottom end of the sealed plate 4 to descend and the top end to slide and rotate in the slide groove 23, the first spring 11 will push the first placement rack 6 and the second placement rack 7 to slide down along the limit groove 10. At this time, the plate rack 3 and the catalyst plate above it will also descend together. Because the plate rack 3 and the catalyst plate are placed directly on the first placement rack 6 and the second placement rack 7, and before the plate rack 3 and the catalyst plate are placed inside the shell 1, they themselves may be contaminated during transportation and the placement of the catalyst plate, resulting in the bottom surface of the plate rack 3 being dirty. Then, when the plate rack 3 is placed, the first placement rack 6 and the second placement rack 7 will be contaminated. When the catalyst plate heats up, the cylinder 9 drives the driving rod 8 to slide down. At this time, the push plate 5 descends and drives the end of the sealing plate 4 to descend. When the push plate 5 descends, the first spring 11 pushes the first placement frame 6 and the second placement frame 7 to descend synchronously, and the receiving rod 12 contacts the wedge block 14. The wedge block 14 can block the receiving rod 12, so that the second spring 13 remains in a compressed state, thereby keeping the receiving rod 12 in a position on one side below the plate frame 3. When the first placement frame 6 and the second placement frame 7 descend, the wedge block 14 will remain in contact with the receiving rod 12 and descend at the same time. When the inclined surface of the top end of the wedge block 14 drops below the receiving rod 12, the receiving rod 12 will be pushed by the second spring 13 to move to the bottom of the plate frame 3, but at this time the plate frame 3 has not yet contacted the receiving rod 12. At this time, the first placement rack 6 and the second placement rack 7 will continue to drop. When the first placement rack 6 and the second placement rack 7 drop to the point where the plate frame 3 contacts the front and rear ends of the receiving rod 12, they will support the plate. At this time, the first placement rack 6 and the second placement rack 7 continue to drop and will separate from the plate frame 3, and then the first placement rack 6 and the second placement rack 7 will drop to the limit. The plate rack 3 is received once by the first placement rack 6 and the second placement rack 7, so that the impurities and mud at the bottom of the plate rack 3 can be adhered to the first placement rack 6 and the second placement rack 7 during the first reception, so that the plate rack 3 becomes clean, and then the plate rack 3 is received by the receiving rod 12 after the heating is completed. At this time, the plate rack 3 will be more stable and in a more horizontal position after being placed on the receiving rod 12, which is conducive to the subsequent drying of the drying component 2; When the drying is completed, the cylinder 9 drives the driving rod 8 and the push plate 5 to reset upward. At this time, the first placement rack 6 and the second placement rack 7 slide up along the limit groove 10. When the inclined surface of the top of the wedge block 14 contacts the receiving rod 12, it will push the receiving rod 12, causing the receiving rod 12 to slide along the inner wall of the shell 1 and compress the second spring 13, thereby pushing the receiving rod 12 to one side, and then remove the plate rack 3. When the plate rack 3 is placed again later, the plate rack 3 will be placed on the first placement rack 6 and the second placement rack 7 again.

[0022] The second placement rack 7 is L-shaped and a movable rod 15 is rotatably connected to the front end thereof. A torsion spring 16 is provided on the rotating shaft sleeve of the movable rod 15 .

[0023] like Figures 8-10 As shown: Because there are multiple layers of placement positions for the plate rack 3, it may not be convenient to place the plate rack 3 directly when it is placed at a higher position. Instead, the plate rack 3 is first tilted to contact the second placement rack 7 and then the plate rack 3 is pushed inward. Therefore, when the plate rack 3 is tilted to contact the second placement rack 7, the plate rack 3 will contact the movable rod 15, and by pressing down the movable rod 15, the movable rod 15 is rotated and the torsion spring 16 is compressed, thereby making the plate rack 3 in a tilted state, and then the plate rack 3 can be directly pushed inward. When the front and rear ends of the plate rack 3 are relatively horizontal, the movable rod 15 is reset under the action of the torsion spring 16, thereby supporting the plate rack 3.

[0024] The front and rear ends of the receiving rod 12 are both slidably connected to a pressure rod 17 in the vertical direction. The pressure rod 17 is L-shaped. A third spring 18 is fixedly connected between the pressure rod 17 and the inner wall of the receiving rod 12. The bottom end of the pressure rod 17 is provided with an integral downward pressing portion 19. When the plate rack 3 falls on the top of the receiving rod 12 and the first placement rack 6 and the second placement rack 7 continue to descend, the pressing portion 19 is pressed down by the movable rod 15 and the end of the first placement rack 6 so that the pressing rod 17 presses down the plate rack 3.

[0025] like Figures 8-10 As shown: When the first placement rack 6 and the second placement rack 7 follow the push plate 5 and descend until the top of the wedge block 14 is lower than the receiving rod 12, the receiving rod 12 will be pushed to the bottom of the plate frame 3 under the action of the second spring 13. At this time, the top of the pressure rod 17 will move from the side of the plate frame 3 to the top of the plate frame 3. Then, when the first placement rack 6 and the second placement rack 7 continue to descend, the plate frame 3 contacts the receiving rod 12 and then stays on the receiving rod 12. At this time, the first placement rack 6 and the second placement rack 7 continue to descend while the plate frame 3 stays on the receiving rod 12. , and then the first placement rack 6 drops to the end and contacts the pressing portion 19 below it, which will drive the pressing rod 17 to slide down along the receiving rod 12 and stretch the fourth spring 22. The movable rod 15 drops to the pressing portion 19 below it and contacts it, which will also drive the pressing rod 17 to drop. When the end of the pressing rod 17 drops to contact the top of the plate rack 3, it will press the plate rack 3 down, so that the plate rack 3 can fit tightly on the receiving rod 12, which is also convenient for maintaining the horizontality of the plate rack 3, so that it can be evenly contacted with the hot air during drying, thereby facilitating uniform drying.

[0026] The side walls of the first placement rack 6 and the second placement rack 7 are both fixedly connected to the blocking rods 20 .

[0027] like Figures 8-10 As shown: The blocking rod 20 can limit the space on the left and right sides when the plate rack 3 is placed, making it easier to place the plate rack 3.

[0028] The sealing plates 4 are all slidably connected to the sealing plates 21 , and a fourth spring 22 is fixedly connected between the sealing plates 21 and the sealing plates 4 .

[0029] like Figure 4 、 Figure 5 and Figure 8 As shown: Because the two adjacent sealed plates 4 isolate the shell 1 into a relatively sealed drying chamber 26 before the push plate 5 descends, the middle part of the two sealed plates 4 and one side of the sealed plate 4 are in an open state. When the two sides are open, although it will not affect the normal drying process, if the middle part of the two sealed plates 4 can be sealed, it can ensure that the hot air inside the drying chamber 26 will not enter the interior of the drying chamber 26 above or below, thereby ensuring the mutual circulation of hot air inside adjacent drying chambers 26 and reducing turbulence.

[0030] A drying process for preparing a denitration catalyst, the process comprising the following steps: Step 1: Place the catalyst plate inside the plate rack 3, and then place the plate rack 3 on the first placement rack 6 and the second placement rack 7, so that the first placement rack 6 and the second placement rack 7 can make the first rough contact with the dirty plate rack 3; Step 2: The housing 1 is divided into multiple chambers by adjacent sealing plates 4, and the drying assembly 2 then dries each chamber separately, thereby reducing turbulence. The sealing plates 4 can also block any dripping mud to prevent a chain reaction. Step 3: After the catalyst plate is heated up, the driving assembly drives the push plate 5 to descend and the sealing plate 4 to expand, so as to facilitate the overall drying of the catalyst plate; Step 4: When the wedge block 14 drops below the receiving rod 12, the receiving rod 12 can move until the plate frame 3 drops to receive the plate frame 3 for a second time, and after the movable rod 15 and the second placement rack 7 press down the pressing part 19, the pressing rod 17 can press the plate frame 3 down to a state of close fit with the receiving rod 12.

Claims

1. A drying system for preparing a denitration catalyst, comprising a housing (1) and a plurality of drying components (2) arranged vertically inside the housing (1), characterized in that: The housing (1) is provided with drive components on both left and right sides thereof. The housing (1) is provided with a plurality of plate racks (3) therein. The plate racks (3) are used to place a flat plate. Support components are symmetrically arranged on both left and right sides below the plate racks (3). The support components include: A sealing plate (4), the end of which is rotatably and slidably arranged inside a slide groove (23) provided on the housing (1); A push plate (5) is rotatably connected to the sealing plate (4) and is slidably disposed on the inner wall of the housing (1); A support rod, disposed inside the housing (1) and used to place the plate rack (3); The driving assembly is used to drive the push plate (5) to slide vertically inside the housing (1).

2. A drying system for preparing a denitration catalyst according to claim 1, characterized in that: The driving assembly comprises a driving rod (8), the driving rod (8) being slidably connected to the inner wall of the housing (1), a cylinder (9) being fixedly connected between the driving rod (8) and the inner wall of the housing (1), and the driving rod (8) being fixedly connected to a plurality of push plates (5) on one side thereof.

3. A drying system for preparing a denitration catalyst according to claim 2, characterized in that: The support rod is composed of a first placement rack (6) and a second placement rack (7), the second placement rack (7) is located directly above the push plate (5) and directly in front of the first placement rack (6), the first placement rack (6) and the second placement rack (7) are at the same height and are used together to support the plate rack (3); The first placement rack (6) and the second placement rack (7) are both slidably connected to the limiting groove (10), and the limiting groove (10) is provided on the inner wall of the shell (1). When the driving rod (8) descends, it drives the first placement rack (6) and the second placement rack (7) to slide down along the limiting groove (10), and a first spring (11) is fixedly connected between the inner wall of the limiting groove (10) and the first placement rack (6) and the second placement rack (7); A receiving rod (12) is provided on the left side of the first placement rack (6) and the second placement rack (7), the receiving rod (12) is U-shaped, the receiving rod (12) is slidably connected to the inner wall of the shell (1) in the horizontal direction, a second spring (13) is fixedly connected between the receiving rod (12) and the inner wall of the shell (1), and two wedge blocks (14) are provided on the right side of the receiving rod (12), and the two wedge blocks (14) are fixedly connected to the first placement rack (6) and the second placement rack (7) respectively; When the first placement rack (6) and the second placement rack (7) drive the wedge block (14) to descend below the receiving rod (12), the receiving rod (12) can be pushed to move toward the middle of the shell (1) under the reset of the second spring (13), and then the first placement rack (6) and the second placement rack (7) continue to descend, causing the plate rack (3) to fall on the receiving rod (12).

4. A drying system for preparing a denitration catalyst according to claim 3, characterized in that: The second placement rack (7) is L-shaped and has a front end rotatably connected to a movable rod (15). The rotating shaft sleeve of the movable rod (15) is provided with a torsion spring (16).

5. A drying system for preparing a denitration catalyst according to claim 4, characterized in that: Both front and rear ends of the receiving rod (12) are slidably connected to a pressure rod (17) in the vertical direction, the pressure rod (17) is L-shaped, a third spring (18) is fixedly connected between the pressure rod (17) and the inner wall of the receiving rod (12), and a bottom end of the pressure rod (17) is provided with an integral downward pressing portion (19); When the plate rack (3) falls on the top of the receiving rod (12), the first placement rack (6) and the second placement rack (7) continue to descend, and the movable rod (15) and the end of the first placement rack (6) press down the pressing part (19), so that the pressing rod (17) presses down the plate rack (3).

6. A drying system for preparing a denitration catalyst according to claim 3, characterized in that: The side walls of the first placement rack (6) and the second placement rack (7) are both fixedly connected with a blocking rod (20).

7. A drying system for preparing a denitration catalyst according to claim 1, characterized in that: The sealing plates (4) are slidably connected to the sealing plates (21), and a fourth spring (22) is fixedly connected between the sealing plates (21) and the sealing plates (4).

8. A drying process for preparing a denitration catalyst, applicable to a drying system for preparing a denitration catalyst as claimed in any one of claims 1 to 5, characterized in that: The process includes the following steps: Step 1: placing the catalyst plate inside the plate rack (3), and then placing the plate rack (3) on a first placement rack (6) and a second placement rack (7), so that the first placement rack (6) and the second placement rack (7) can make a first rough contact with the dirtier plate rack (3); Step 2: the housing (1) is divided into a plurality of chambers by adjacent sealing plates (4), and the drying assembly (2) then dries the chamber separately, thereby reducing turbulence, and the sealing plates (4) can block the mud that may drip to avoid causing a chain reaction; Step 3: After the catalyst plate is heated up, the driving assembly drives the push plate (5) to descend so that the sealing plate (4) is unfolded, so as to facilitate the overall drying of the catalyst plate; Step 4: When the wedge block (14) descends to a level lower than the receiving rod (12), the receiving rod (12) can move to the lowered plate frame (3) to receive the plate frame (3) for a second time, and after the movable rod (15) and the second placement frame (7) press down the pressing portion (19), the pressing rod (17) can press the plate frame (3) down to a state where it fits tightly against the receiving rod (12).

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