Tubular SCR denitration catalyst structure

Abstract

The utility model relates to the technical field of denitration catalysis, and discloses a tubular SCR denitration catalyst structure which comprises a fixed frame, a tubular catalyst body is mounted in the fixed frame, a filter screen is mounted in the fixed frame, and a plurality of sets of circumferentially arranged knocking assemblies are mounted on the outer surface of the filter screen. According to the tubular SCR denitration catalyst structure, by arranging the filter screen, the purpose of primarily intercepting dust particles in flue gas can be achieved, the service life of the filling catalyst body can be effectively prolonged, the replacement frequency can be reduced, and by arranging the extrusion block matched with the extrusion assembly, in the rotation process of the extrusion block, the dust particles in the filling catalyst body can be effectively blocked; the filter screen is continuously knocked by the knocking ball, dust particles attached to the surface of the filter screen can fall off through vibration, and the filter screen is continuously cleaned and scraped by the cleaning plate driven by the knocking plate, so that the air permeability of the filter screen can be effectively ensured, and the denitration efficiency is ensured.

Description

Technical Field

[0001] The present application relates to the field of denitration catalysis technology, and specifically to a tubular SCR denitration catalyst structure. Background Art

[0002] The tubular SCR denitration catalyst is a catalyst structure used in the field of environmental engineering. Its design purpose is to optimize the removal effect of nitrogen oxides (NOx). The main feature of this catalyst is that its monomer is tubular and belongs to a homogeneous catalyst. Although the tubular SCR denitration catalyst has high performance in the denitration process, it also has some obvious disadvantages. Since the flue gas may contain particles that have not been dust-removed, these particles are easy to cause the catalyst pores to be blocked, thereby affecting the life of the catalyst.

[0003] The existing patent (announcement number: CN202263607U) discloses a tubular SCR denitration catalyst structure. It is characterized in that the catalyst structure monomer is tubular and belongs to a homogeneous catalyst. The inner diameter of the catalyst monomer is 5-15mm, the outer diameter is 5.1-20mm, and the height is 10-10000mm. The utility model solves the problem that once the monomer of the existing catalyst is worn, it needs to be replaced on a large scale, thereby wasting costs. Under the conditions of the same volume space, the same inner diameter, and the same wall thickness, the specific surface area of ​​the tubular catalyst structure is larger than that of the honeycomb catalyst structure. The preparation method of the tubular catalyst structure is simple, the production cost is low, it is not easy to be blocked, and it has a large specific surface area and high denitration efficiency.

[0004] However, during use, due to the small inner diameter of the catalyst monomer tube, after a period of use, the dust inside the flue gas easily covers the inner wall of the monomer tube, causing the channel to become narrow and partially blocked, affecting the permeability of the flue gas and thus affecting the denitrification efficiency. Utility Model Content

[0005] In response to the shortcomings of the prior art, the present application provides a tubular SCR denitrification catalyst structure with advantages such as anti-clogging. It solves the problem that due to the small inner diameter of the catalyst monomer tubular, after a period of use, the dust inside the flue gas is easily covered on the inner wall of the monomer tubular, causing the channel to become narrow and partially blocked, affecting the permeability of the flue gas and further affecting the denitrification efficiency.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a tubular SCR denitration catalyst structure, comprising a fixed frame, a tubular catalyst body is installed inside the fixed frame, a filter is installed inside the fixed frame, and a plurality of groups of circumferentially arranged knocking components are installed on the outer surface of the filter;

[0007] Each of the knocking assemblies comprises two support plates, a reset shaft, two torsion springs, a knocking plate and a knocking ball;

[0008] A rotating shaft is rotatably connected to one side of the filter screen, a plurality of circumferentially arranged extrusion blocks are fixedly connected to the outer surface of the rotating shaft, and a cleaning plate is fixedly connected to a side of each extrusion block close to the filter screen;

[0009] A waste discharge assembly is installed at the bottom of the fixed frame;

[0010] The waste discharge assembly comprises a connecting box, an auger shaft, an auger sheet, a waste discharge pipe and a sealing cover.

[0011] Through the above scheme, the purpose of initial interception of dust particles in the flue gas can be achieved through the set filter, which can effectively extend the service life of the filled catalyst body and reduce the replacement frequency. Through the set extrusion block and the extrusion assembly, the knocking ball can be continuously knocked on the filter during the rotation of the extrusion block, and the dust particles attached to the surface of the filter can be made to fall off by vibration. The cleaning plate can be driven by the knocking plate to continuously clean and scrape the filter, which can effectively ensure the air permeability of the filter and the destocking efficiency. The waste discharge assembly can achieve the purpose of automatic discharge of the fallen dust particles, which effectively improves the convenience of users when cleaning the filter.

[0012] Furthermore, each of the support plates is fixedly connected to one side of the filter screen, both ends of each of the reset shafts are rotatably connected to the support plates adjacent to it, each of the knocking plates is fixedly connected to the reset shafts adjacent to it, each of the knocking balls is fixedly embedded in the knocking plates adjacent to it, each of the knocking balls is in contact with the filter screen, and both ends of each of the torsion springs are respectively fixedly connected to the knocking plates and support plates adjacent to it.

[0013] Through the above scheme and the provision of the torsion spring, the purpose of resetting the knocking plate after it is turned over can be achieved.

[0014] Furthermore, the connecting box is fixedly connected to the fixed frame, the bottom end of the connecting box is set to an arc shape, both ends of the auger shaft are rotatably connected to the inner wall of the connecting box, the auger piece is fixedly connected to the auger shaft, the outer edge of the auger piece is in contact with the inner wall of the connecting box, the waste pipe is fixedly connected to the bottom end of the connecting box, and the sealing cover is threadedly connected to the waste pipe.

[0015] Through the above scheme, dust and impurities can be pushed away by setting the auger blades and the auger shaft.

[0016] Furthermore, one end of the auger shaft is fixedly connected to an external motor output end.

[0017] Through the above scheme, the external motor is set to provide power for the rotation of the auger shaft.

[0018] Furthermore, a power shaft is rotatably connected to the upper surface of the fixed frame, and a bevel gear is fixedly connected to the bottom end of the power shaft and one end of the rotating shaft, and the two bevel gears are meshedly connected.

[0019] Through the above scheme, by setting the bevel gear, power can be transmitted for the rotation of the rotating shaft.

[0020] Furthermore, the top end of the power shaft is fixedly connected to an external motor output end.

[0021] Through the above solution, by setting up an external motor, it is possible to provide power for the rotation of the power shaft.

[0022] Furthermore, a mounting arrow is fixedly connected to one side surface of the fixing frame.

[0023] Through the above solution, by setting the installation arrow, it is convenient for the user to determine the installation direction.

[0024] Furthermore, the outer surface of each knocking plate is provided with a plurality of notches.

[0025] Through the above scheme, the setting of the slots can ensure the permeability of the flue gas and the denitrification efficiency.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0027] The tubular SCR denitrification catalyst structure can achieve the purpose of primary interception of dust particles in the flue gas through the set filter, can effectively prolong the service life of the filled catalyst body, and reduce the replacement frequency; through the set extrusion block and the extrusion component, it can be achieved that the knocking ball continuously knocks on the filter during the rotation of the extrusion block, and the dust particles attached to the surface of the filter can be made to fall off through vibration; the cleaning plate is driven by the knocking plate to continuously clean and scrape the filter, which can effectively ensure the air permeability of the filter and the denitrification efficiency; the waste discharge component can achieve the purpose of automatic discharge of the fallen dust particles, and effectively improve the convenience of users when cleaning the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the overall structure of this application;

[0029] Figure 2 A sectional view of the side view of the overall structure of the present application;

[0030] Figure 3 Tap the component structure diagram for this application;

[0031] Figure 4 Diagram of the extrusion block and cleaning plate structure for this application.

[0032] In the figure:

[0033] 1. Fixed frame; 2. Tubular catalyst body; 3. Filter; 4. Knocking assembly; 401. Support plate; 402. Reset shaft; 403. Torsion spring; 404. Knocking plate; 405. Knocking ball; 5. Rotating shaft; 6. Extrusion block; 7. Cleaning plate; 8. Waste discharge assembly; 801. Connecting box; 802. Auger shaft; 803. Auger piece; 804. Waste discharge pipe; 805. Sealing cover; 9. Power shaft; 10. Bevel gear; 11. Installation arrow; 12. Notch. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] See also Figure 1 , Figure 2 and Figure 3 A tubular SCR denitration catalyst structure in this embodiment includes a fixed frame 1, a tubular catalyst body 2 is installed inside the fixed frame 1, a filter screen 3 is installed inside the fixed frame 1, and a plurality of groups of circumferentially arranged knocking components 4 are installed on the outer surface of the filter screen 3.

[0036] See also Figure 1 , Figure 2 and Figure 3 Each knocking assembly 4 includes two support plates 401, a reset shaft 402, two torsion springs 403, a knocking plate 404 and a knocking ball 405. Each support plate 401 is fixedly connected to one side of the filter 3. Both ends of each reset shaft 402 are rotatably connected to the support plate 401 adjacent to it. Each knocking plate 404 is fixedly connected to the reset shaft 402 adjacent to it. Each knocking ball 405 is fixedly embedded in the knocking plate 404 adjacent to it. Each knocking ball 405 is in contact with the filter 3. Both ends of each torsion spring 403 are respectively fixedly connected to the knocking plate 404 adjacent to it and the support plate 401. Through the setting of the torsion spring 403, the purpose of resetting after the knocking plate 404 is flipped can be achieved. A plurality of notches 12 are provided on the outer surface of each knocking plate 404. Through the setting of the notches 12, the permeability of the flue gas can be guaranteed and the denitrification efficiency can be guaranteed.

[0037] See also Figure 1 , Figure 2 and Figure 4 A rotating shaft 5 is rotatably connected to one side of the filter screen 3, and a plurality of circumferentially arranged extrusion blocks 6 are fixedly connected to the outer surface of the rotating shaft 5. A cleaning plate 7 is fixedly connected to a side of each extrusion block 6 close to the filter screen 3. A power shaft 9 is rotatably connected to the upper surface of the fixed frame 1, and a bevel gear 10 is fixedly connected to the bottom end of the power shaft 9 and one end of the rotating shaft 5. The two bevel gears 10 are meshedly connected. Through the setting of the bevel gear 10, power can be transmitted for the rotation of the rotating shaft 5. The top end of the power shaft 9 is fixedly connected to the output end of an external motor. Through the setting of an external motor, power can be provided for the rotation of the power shaft 9.

[0038] A waste discharge assembly 8 is installed at the bottom of the fixed frame 1 .

[0039] See also Figure 1 , Figure 2 and Figure 3 The waste discharge component 8 includes a connecting box 801, an auger shaft 802, an auger piece 803, a waste discharge pipe 804 and a sealing cover 805. The connecting box 801 is fixedly connected to the fixed frame 1, and the bottom end of the connecting box 801 is set to an arc shape. Both ends of the auger shaft 802 are rotatably connected to the inner wall of the connecting box 801, the auger piece 803 is fixedly connected to the auger shaft 802, and the outer edge of the auger piece 803 contacts the inner wall of the connecting box 801. The waste discharge pipe 804 is fixedly connected to the bottom end of the connecting box 801, and the sealing cover 805 is threadedly connected to the waste discharge pipe 804. Through the setting of the auger piece 803 and the auger shaft 802, dust and impurities can be pushed away. One end of the auger shaft 802 is fixedly connected to the output end of the external motor. Through the setting of the external motor, it can provide power for the rotation of the auger shaft 802.

[0040] See also Figure 1 , Figure 2 and Figure 3 A mounting arrow 11 is fixedly connected to one side of the fixed frame 1. The setting of the mounting arrow 11 can facilitate the user to determine the mounting direction.

[0041] A tubular SCR denitrification catalyst structure in the present embodiment can achieve the purpose of initial interception of dust particles in the flue gas through the set filter 3, can effectively extend the service life of the filled catalyst body, and reduce the replacement frequency. By setting the extrusion block 6 in conjunction with the extrusion assembly, it can be achieved that during the rotation of the extrusion block 6, the knocking ball 405 continuously knocks on the filter 3, and the dust particles attached to the surface of the filter 3 can be made to fall off through vibration. By cooperating with the knocking plate 404 to drive the cleaning plate 7 to continuously clean and scrape the filter 3, the air permeability of the filter 3 can be effectively guaranteed, and the denitrification efficiency can be guaranteed. By setting the waste discharge assembly 8, the purpose of automatic discharge of the fallen dust particles can be achieved, and the convenience of the user when cleaning the filter 3 is effectively improved.

[0042] The working principle of the above embodiment is as follows: when in use, the two ends of the fixed frame 1 are respectively connected to the external smoke exhaust pipe. When the smoke passes through the filter 3, the filter 3 can intercept most of its dust particles, thereby effectively reducing the clogging frequency of the tubular catalyst body 2 and improving the denitrification efficiency. By starting the external motor, the power shaft 9 is driven to rotate, and the bevel gear 10 is driven to rotate. The bevel gear 10 is engaged to drive the rotating shaft 5 and the extrusion block 6 to rotate. When the inclined surface of the extrusion block 6 contacts the knocking ball 405, the knocking ball 405 can drive the knocking plate 404 to flip and compress the torsion spring 403 at the same time. When the two are disengaged, the knocking ball 405 knocks on the filter 3 under the reset of the torsion spring 403, and cooperates with the extrusion block 6 to drive the cleaning plate 7 to rotate on the surface of the filter 3, which can further improve the cleaning effect and avoid clogging of the filter 3. The particles fall to the bottom of the connecting box 801 through the connecting box 801. When processing is required, the external motor is started to drive the auger piece 803 to rotate, so that the collected particles can be pushed, and the sealing cover 805 is opened to release.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tubular SCR denitration catalyst structure, comprising a fixed frame (1), characterized in that: A tubular catalyst body (2) is installed inside the fixed frame (1), a filter screen (3) is installed inside the fixed frame (1), and a plurality of groups of circumferentially arranged knocking components (4) are installed on the outer surface of the filter screen (3); Each of the knocking components (4) comprises two support plates (401), a reset shaft (402), two torsion springs (403), a knocking plate (404) and a knocking ball (405); A rotating shaft (5) is rotatably connected to one side of the filter screen (3); a plurality of circumferentially arranged extrusion blocks (6) are fixedly connected to the outer surface of the rotating shaft (5); and a cleaning plate (7) is fixedly connected to a side of each extrusion block (6) close to the filter screen (3); A waste discharge assembly (8) is installed at the bottom of the fixed frame (1); The waste discharge assembly (8) comprises a connecting box (801), an auger shaft (802), an auger blade (803), a waste discharge pipe (804) and a sealing cover (805).

2. The tubular SCR denitration catalyst structure according to claim 1, characterized in that: Each of the support plates (401) is fixedly connected to a side surface of the filter screen (3); both ends of each of the reset shafts (402) are rotatably connected to the support plate (401) adjacent to it; each of the knocking plates (404) is fixedly connected to the reset shaft (402) adjacent to it; each of the knocking balls (405) is fixedly embedded in the knocking plate (404) adjacent to it; each of the knocking balls (405) is in contact with the filter screen (3); and both ends of each of the torsion springs (403) are respectively fixedly connected to the knocking plate (404) adjacent to it and the support plate (401).

3. The tubular SCR denitration catalyst structure according to claim 1, characterized in that: The connecting box (801) is fixedly connected to the fixed frame (1); the bottom end of the connecting box (801) is configured to be arc-shaped; both ends of the auger shaft (802) are rotatably connected to the inner wall of the connecting box (801); the auger piece (803) is fixedly connected to the auger shaft (802); the outer edge of the auger piece (803) contacts the inner wall of the connecting box (801); the waste discharge pipe (804) is fixedly connected to the bottom end of the connecting box (801); and the sealing cover (805) is threadedly connected to the waste discharge pipe (804).

4. The tubular SCR denitration catalyst structure according to claim 1, characterized in that: One end of the auger shaft (802) is fixedly connected to an external motor output end.

5. The tubular SCR denitration catalyst structure according to claim 1, characterized in that: The upper surface of the fixed frame (1) is rotatably connected to a power shaft (9), the bottom end of the power shaft (9) and one end of the rotating shaft (5) are both fixedly connected to bevel gears (10), and the two bevel gears (10) are meshingly connected.

6. The tubular SCR denitration catalyst structure according to claim 5, characterized in that: The top end of the power shaft (9) is fixedly connected to an external motor output end.

7. The tubular SCR denitration catalyst structure according to claim 1, characterized in that: A mounting arrow (11) is fixedly connected to one side of the fixed frame (1).

8. The tubular SCR denitration catalyst structure according to claim 1, characterized in that: The outer surface of each knocking plate (404) is provided with a plurality of notches (12).

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