A mechanical dredging device for the pores of a denitration catalyst module
By designing a mechanical dredging device including support, catheter and needle, the deactivation of the denitrification catalyst module channel is solved, and the effect of efficient dust removal and prolonging the catalyst life is achieved.
Patent Information
- Application Number
- CN202421505391.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the prior art, the denitrification catalyst module channel is blocked by large-particle fly ash or deposited fly ash, resulting in decreased activity and physical and chemical inactivation, and the artificial hand-held needle removal efficiency is low.
A mechanical dredging device including a support, a catheter and a needle are designed. The needle is centered with the catalyst module channel through the catheter, and the needle is penetrated into the channel under the guidance of the catheter and removes dust.
It improves the dredging efficiency of the denitrification catalyst module channel, extends the service life of the catalyst, and reduces the risk of physical and chemical inactivation.
Smart Images
Figure CN222724032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of denitration catalyst activation, in particular to a mechanical dredging device for a denitration catalyst module channel. Background Art
[0002] During the use of denitrification catalyst, the pores are blocked due to the adsorption and bridging of large particles of fly ash or deposited fly ash. Due to the blockage of the pores, the reactants in the flue gas cannot further enter the inner surface of the catalyst pores, resulting in a decrease in activity. At the same time, the local flue gas velocity is too fast, and the insufficient residence time causes the pressure drop to increase and the wear to increase, resulting in the physical deactivation of the catalyst. Since the flue gas fly ash contains more compounds of elements such as K, Na, P, and As, they react with the active sites of the catalyst accordingly, thereby reducing the number of active sites participating in the denitrification reaction, causing the catalyst to be chemically deactivated.
[0003] During the activation process of the denitrification catalyst, in order to reduce the load of the cleaning liquid during water washing, acid washing and alkaline washing, mechanical removal of dust in the pores of the denitrification catalyst is a necessary step for the activation of the denitrification catalyst. However, in the prior art, a single handheld needle is usually used to remove the dust in the pores, so the work efficiency is extremely low. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a mechanical dredging device for the pores of a denitration catalyst module with high dredging efficiency.
[0005] The technical solution of the utility model is:
[0006] A mechanical unclogging device for a denitration catalyst module channel comprises a support and a plurality of clearing needles, wherein the support is provided with a plurality of conduits arranged in the same direction as the channels of the denitration catalyst module, each of the clearing needles is slidably connected to the conduits, an extension plate extending outward is provided at any edge of the bottom of the support, and a positioning rod arranged in the same direction as the denitration catalyst channel is provided at the extension plate.
[0007] Preferably, each of the pass needles comprises a plurality of steel wires, and the steel wires are hinged to each other and arranged in strands.
[0008] Preferably, each of the needles is arranged in a conical shape at one end close to the denitration catalyst module.
[0009] Preferably, the extension plate and the body of the support are hinged, and a damper is provided at the hinge point.
[0010] Preferably, a buffer pad is provided at the bottom of the support and at each positioning rod.
[0011] Preferably, each of the catheters is arranged in a split shape and includes a first tube segment and a second tube segment, each of the first tube segments is fixedly connected to the lower part of the support, each of the second tube segments is connected to the upper part of the support, the second tube segment and the first tube segment are sleeved, the upper and lower parts of the support are slidably connected, and the upper part of each of the needles is connected to the upper part of the second tube segment.
[0012] Preferably, a plurality of upwardly extending clamping blocks are provided at the lower portion of the support, and clamping grooves adapted to the clamping blocks are provided at the upper side walls of the support.
[0013] Preferably, the upper portion of each second tube segment is threadedly connected to a first base, the first base is connected to a second base via a spring, and the upper portion of the pass needle is fixedly connected to the second base.
[0014] Preferably, a pressure handle is provided on the upper portion of the support.
[0015] Compared with the prior art, the mechanical dredging device for the pores of the denitration catalyst module of the utility model has a plurality of conduits arranged at the support, each conduit and each pore of the denitration catalyst module are arranged in the same direction, and each conduit is slidably connected with a pass needle. When in use, each conduit and the pores of the denitration catalyst module are aligned by the positioning rod at the extension plate at the bottom of the support, and the dust in the pores of the denitration catalyst module can be removed by dragging each pass needle, thus having the beneficial effect of high dredging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of an embodiment of a mechanical dredging device for the denitration catalyst module pores of the utility model.
[0017] Figure 2 It is a cross-sectional schematic diagram of a preferred embodiment of a pass needle of a mechanical dredging device for a denitration catalyst module channel of the utility model.
[0018] Figure 3 It is a schematic diagram of a preferred embodiment of a support of a mechanical dredging device for a denitration catalyst module channel of the utility model.
[0019] Figure 4 It is a schematic diagram of a preferred embodiment of the cooperation between the extension plate and the support of the mechanical dredging device of the denitration catalyst module channel of the utility model.
[0020] Figure 5 It is a schematic diagram of an embodiment of the cooperation between the first pipe section and the second pipe section of the conduit of the mechanical dredging device of the denitration catalyst module channel of the utility model.
[0021] Figure 6It is a schematic diagram of an embodiment of the connection between the needle and the second pipe section of the mechanical clearing device of the denitration catalyst module channel of the utility model.
[0022] Figure 7 It is a working schematic diagram of the mechanical dredging device for the denitration catalyst module pores of the utility model.
[0023] Description of the numbers in the figure:
[0024] 101-needle; 102-support; 103-extension plate; 104-positioning rod; 105-catheter; 106-fixing plate; 107-slot; 108-block; 109-first pipe section; 110-second pipe section; 111-first base; 112-second base; 113-spring. DETAILED DESCRIPTION
[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0026] Embodiment 1:
[0027] like Figure 1 , 2 In the embodiments shown in FIGS. 3 and 7, the support 102 is used to install various functional components. In order to reduce the weight of the support 102, the support 102 can be made of a stainless steel sheet or an ABS engineering plastic sheet. In order to enhance the strength of the support 102, a plurality of reinforcing ribs can be provided at the body of the support 102.
[0028] The upper and lower parts of the support 102 are both provided with fixing plates 106, and the fixing plates 106 are provided with through holes for accommodating the conduits 105, and each conduit 105 is fixed at the through holes, wherein the arrangement of each conduit 105 is the same as the channel of the denitration catalyst module, and each conduit 105 is arranged in the same direction as the channel of the denitration catalyst module. A through needle 101 is slidably connected to each conduit 105, and each through needle 101 can smoothly penetrate into the interior of the denitration catalyst channel under the guidance of the conduit 105 to remove dust and large particles of impurities in the channel.
[0029] In order to facilitate the insertion of the through needle 101 into the channel of the denitration catalyst module from the outside, one end of each through needle 101 close to the denitration catalyst module is configured in a conical shape.
[0030] The positioning rod 104 arranged at the bottom of the support 102 is inserted into other channels of the denitration catalyst module when in use to achieve the alignment of each conduit 105 and the channel of the part to be cleared. Specifically, an extension plate 103 extending outward is arranged at any edge of the bottom of the support 102, and each positioning rod 104 is arranged at the same interval as the denitration catalyst and is installed at the bottom of the extension plate 103.
[0031] In specific use, the positioning rod 104 at the extension plate 103 at the bottom of the support 102 is inserted into the side channel of the denitration catalyst module channel to be dredged, and the centering of each conduit 105 and the channel can be completed. The staff pushes each pass needle 101, and each pass needle 101 is guided by the conduit 105 to penetrate into the channel, which can remove dust and large particles in each channel.
[0032] Embodiment 2:
[0033] On the basis of Example 1, Figure 2 In the illustrated embodiment, in order to ensure that the pass needle 101 has a certain degree of bendability while ensuring strength, each pass needle 101 includes a plurality of steel wires, and the steel wires are hinged to each other and arranged in strands.
[0034] Embodiment 3:
[0035] On the basis of Example 1 or 2, Figure 4 In the illustrated embodiment, in order to prevent the error in the position of the channel from hindering the insertion of the through needle 101 when the denitration catalyst module is cast, the extension plate 103 and the main body of the support 102 are hinged. When any through needle 101 cannot be inserted during use, the support 102 can be slightly shaken, and the support 102 drives each conduit 105 to change its relative position with the channel, thereby allowing the through needle 101 that has failed to penetrate to be inserted.
[0036] The damper disposed at the hinge point can increase the friction between the support body and the extension plate 103 to prevent excessive adjustment.
[0037] Embodiment 4:
[0038] Based on any one of Examples 1-3, it can be understood that since the main structure of the denitration catalyst module is based on sintered soil, in order to prevent the main structure of the denitration catalyst from being damaged during use, buffer pads are provided at the bottom of the support 102 and each positioning rod 104.
[0039] Among them, the buffer pad can be made of silicone or rubber material.
[0040] Embodiment 5:
[0041] On the basis of any one of embodiments 1-4, Figure 5 , 6In the illustrated embodiment, in order to improve work efficiency, when the channel of the denitration catalyst module is unblocked, each pass needle 101 can be inserted into the channel at the same time, each conduit 105 is arranged in a split type, and each conduit 105 includes a first pipe section 109 and a second pipe section 110. The support 102 is also arranged in a split type, and the upper part of the support 102 is slidably connected to the lower part of the support 102. Each second pipe section 110 and the first pipe section 109 are mutually sleeved, each first pipe section 109 is fixedly connected to the fixed plate 106 at the lower part of the support 102, and each second pipe section 110 is fixedly connected to the fixed plate 106 at the upper part of the support 102. The upper part of each pass needle 101 is connected to the upper part of the second pipe section 110.
[0042] When in use, after the bottom of each first pipe segment 109 is aligned with the channel to be cleared, the second pipe segment 110 can be slid along the first pipe segment 109 by pressing down the upper part of the support 102. Since the upper part of each pass needle 101 is connected to the upper part of the second pipe segment 110, the pass needle 101 can be inserted into the channel of the denitrification catalyst under the push of the upper part of the second pipe segment 110.
[0043] An optional connection mode between the upper part of the support 102 and the lower part of the support 102 is that a plurality of upwardly extending blocks 108 are provided at the lower part of the support 102, and a slot 107 adapted to the block 108 is provided at the side of the upper part of the support 102. The lower part and the upper part of the support 102 are slidably connected through the block 108 and the slot 107.
[0044] In this embodiment, due to the error in the arrangement of the channels of the catalyst module, when some of the needles 101 cannot be probed downward, in order to quickly find the needles 101 that cannot be probed downward, the upper part of each second pipe section 110 is threadedly connected with the first base 111, and the first base 111 is connected with the second base 112 via the spring 113, and the upper part of the needle 101 is fixedly connected with the second base 112. The needle 101 that cannot be probed downward will cause the second base 112 and the second pipe section 110 to move relative to each other due to the obstruction. When in use, the needle 101 at that place can be smoothly probed downward by slightly shaking the support 102.
[0045] In this embodiment, in order to provide a force point when pressing down the upper part of the support 102, a pressure handle is provided on the side of the upper part of the support 102.
[0046] The embodiments described above are only preferred specific implementation methods of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present utility model according to the technical solution and utility model concept of the present utility model, which should be covered by the protection scope of the present utility model.
Claims
1. A mechanical dredging device for a denitration catalyst module channel, characterized in that: The invention comprises a support (102) and a plurality of guide pins (101); the support (102) is provided with a plurality of guide tubes (105) arranged in the same direction as the channels of the denitration catalyst module; each guide pin (101) is slidably connected to the guide tube (105); an extension plate (103) extending outward is arranged at any edge of the bottom of the support (102); and a positioning rod (104) arranged in the same direction as the channels of the denitration catalyst is arranged at the extension plate (103).
2. The mechanical dredging device for the pores of the denitration catalyst module according to claim 1, characterized in that: Each of the guide needles (101) comprises a plurality of steel wires, which are hinged to each other and arranged in strands.
3. The mechanical dredging device for the pores of the denitration catalyst module according to claim 1, characterized in that: Each pass needle (101) is arranged in a cone shape at one end close to the denitration catalyst module.
4. The mechanical dredging device for the pores of the denitration catalyst module according to claim 1, characterized in that: The extension plate (103) and the body of the support (102) are hinged, and a damper is arranged at the hinge point.
5. The mechanical dredging device for the pores of the denitration catalyst module according to claim 1, characterized in that: Buffer pads are provided at the bottom of the support (102) and at each positioning rod (104).
6. The mechanical dredging device for the pores of the denitration catalyst module according to claim 1, characterized in that: Each conduit (105) is arranged in a split shape and comprises a first pipe section (109) and a second pipe section (110); each first pipe section (109) is fixedly connected to the lower part of the support (102); each second pipe section (110) is connected to the upper part of the support (102); the second pipe section (110) and the first pipe section (109) are sleeved; the upper part and the lower part of the support (102) are slidably connected; and the upper part of each needle (101) is connected to the upper part of the second pipe section (110).
7. The mechanical dredging device for the pores of the denitration catalyst module according to claim 6, characterized in that: A plurality of upwardly extending clamping blocks (108) are arranged at the lower part of the support (102), and a clamping groove (107) adapted to the clamping blocks (108) is arranged at the upper side wall of the support (102).
8. The mechanical dredging device for the pores of the denitration catalyst module according to claim 6, characterized in that: The upper part of each second pipe section (110) is threadedly connected to a first base (111), the first base (111) is connected to a second base (112) via a spring (113), and the upper part of the needle (101) is fixedly connected to the second base (112).
9. The mechanical dredging device for the pores of the denitration catalyst module according to claim 6, characterized in that: A pressing handle is arranged on the upper part of the support (102).