Quick replacement device for SCR (Selective Catalytic Reduction) denitration catalyst

Abstract

The utility model relates to the field of denitration catalysts, in particular to an SCR denitration catalyst quick replacement device which comprises a denitration reactor, two access holes are formed in the side wall of the denitration reactor, access doors used for blocking the access holes are fixedly installed on the side wall of the denitration reactor, and a plurality of I-shaped steel is fixedly installed in the denitration reactor. One end of each I-shaped steel extends out of the denitration reactor and is slidably provided with a hoisting assembly, and the side wall of the denitration reactor is provided with an avoiding opening for avoiding the I-shaped steel. Through the built-in I-shaped steel rail and the hoisting assembly, hoisting and moving of a catalyst can be directly completed outside the denitration reactor, the problem that a traditional crane cannot be used due to complex construction environment or space limitation is solved, and equipment dependence is reduced.

Description

Technical Field

[0001] This utility model relates to the field of denitrification catalysts, specifically to a rapid replacement device for SCR denitrification catalysts. Background Technology

[0002] In large industrial sectors such as power generation, metallurgy, chemical, petroleum, steel, and cement plants, SCR (Selective Catalytic Reduction) is the most widely used and effective NOx treatment process for flue gas treatment. The catalyst is the most significantly affected component in the SCR process. Commonly used catalysts are honeycomb-shaped. Due to the complex operating conditions and the presence of fly ash and sulfur dioxide in the flue gas, the catalyst is easily clogged, leading to catalyst failure and even the release of toxic gases. Furthermore, the catalyst's lifespan is only 2-3 years, necessitating regular cleaning, activation, and replacement. Therefore, convenient replacement tools are required for easy catalyst replacement.

[0003] Because the catalyst is large in size and weight, it is generally lifted by a crane when it needs to be replaced. When replacing the catalyst, the catalyst module needs to be lifted to the top of the denitrification reactor, and then the catalyst is vertically placed into the denitrification reactor through a hoist.

[0004] While the above replacement method using a crane is relatively simple and convenient, the varying working conditions and complex environment at construction sites, and the lack of crane operation capabilities, make it impossible to replace the catalyst. Using large lifting equipment for long-distance lifting would increase the lifting cost.

[0005] Therefore, how to improve the existing catalyst hoisting scheme to achieve rapid catalyst replacement and reduce maintenance costs is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a rapid replacement device for SCR denitrification catalyst to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A rapid replacement device for SCR denitrification catalyst includes a denitrification reactor. The side wall of the denitrification reactor has two inspection ports. An inspection door for sealing the inspection ports is fixedly installed on the side wall of the denitrification reactor. Multiple I-beams are fixedly installed inside the denitrification reactor, and one end of each I-beam extends out of the denitrification reactor and is slidably installed with a hoisting assembly. The side wall of the denitrification reactor has a clearance opening for avoiding the I-beams.

[0009] Furthermore, the hoisting assembly includes a monorail trolley slidably mounted on the end of the I-beam, a lifting hoist is hoisted at the bottom of the monorail trolley, and a lifting hook is hoisted at the bottom of the lifting hoist.

[0010] Furthermore, the hoist is connected to the hook and the monorail trolley via a chain, and the hoist is externally connected to a motor for driving the chain to extend and retract.

[0011] Furthermore, the sidewall of the denitrification reactor is fixedly equipped with a sealing plate for sealing the avoidance port.

[0012] Furthermore, two foot platforms are fixedly installed on the side wall of the denitrification reactor, and the tops of the two foot platforms are respectively flush with the bottoms of the two inspection ports.

[0013] Furthermore, the denitrification reactor has an inspection port on its side wall, and the side wall of the denitrification reactor is hinged with a cover plate for sealing the inspection port.

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

[0015] 1. This utility model, through its built-in I-beam rail and hoisting components, allows for the direct hoisting and movement of the catalyst outside the denitrification reactor, solving the problem that traditional cranes cannot be used due to complex construction environments or space limitations, and reducing equipment dependence.

[0016] 2. This utility model improves the hoisting efficiency by horizontally hoisting the catalyst. Specifically, through the combination of the inspection port and the horizontally sliding hoisting components, the catalyst can be directly and horizontally fed into the denitrification reactor, replacing the traditional top vertical hoisting method, reducing the complexity of the hoisting path and shortening the replacement time.

[0017] 3. This utility model adds a stepping platform that is flush with the inspection port, providing a stable working surface and facilitating manual operation, thereby enhancing operational safety and convenience; the design of the inspection port facilitates quick inspection of the reactor's internal condition, avoids repeated disassembly of the inspection door, and improves maintenance efficiency and construction safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2for Figure 1 Enlarged diagram of A in the middle;

[0021] Figure 3 This is a schematic diagram of the denitrification reactor in this utility model.

[0022] In the diagram: 1. Denitrification reactor; 2. Inspection port; 3. Inspection door; 4. I-beam; 5. Lifting assembly; 6. Circumvention opening; 7. Monorail trolley; 8. Lifting hoist; 9. Hook; 10. Sealing plate; 11. Stepping platform; 12. Inspection port; 13. Cover plate. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] Example

[0025] A rapid replacement device for SCR denitrification catalyst includes a denitrification reactor 1. The side wall of the denitrification reactor 1 has two inspection ports 2. The side wall of the denitrification reactor 1 is fixedly installed with an inspection door 3 for sealing the inspection ports 2. Multiple I-beams 4 are fixedly installed inside the denitrification reactor 1, and one end of each I-beam 4 extends out of the denitrification reactor 1 and is slidably installed with a hoisting assembly 5. The side wall of the denitrification reactor 1 has an avoidance opening 6 for avoiding the I-beams 4.

[0026] As a preferred solution provided by a rapid replacement device for SCR denitrification catalyst, the hoisting assembly 5 includes a monorail trolley 7 that is slidably mounted on the end of the I-beam 4, a lifting hoist 8 that is hoisted at the bottom of the monorail trolley 7, and a hook 9 that is hoisted at the bottom of the lifting hoist 8.

[0027] As a further explanation of this embodiment, in this embodiment, the object to be hoisted is hooked by the hook 9, and the vertical height of the object is controlled by the telescopic adjustment of the hoist 8. The horizontal movement distance of the object is controlled by the reciprocating movement of the single-track trolley 7 (which is equipped with a drive motor) along the length of the I-beam 4.

[0028] As a preferred solution provided by a rapid replacement device for SCR denitrification catalyst, the hoist 8 is connected to the hook 9 and the monorail trolley 7 via a chain, and the hoist 8 is externally connected to a motor for driving the chain to extend and retract.

[0029] As a further illustration of this embodiment, in this example, the I-beam 4 is made of Q355 steel, the lifting hoist 8 is a 2t lifting hoist, and the inspection door 3 is made of Q355 steel plate.

[0030] As a preferred solution provided by a rapid replacement device for SCR denitrification catalyst, a sealing plate 10 for sealing the avoidance port 6 is fixedly installed on the side wall of the denitrification reactor 1.

[0031] As a further explanation of this embodiment, the end of the I-beam 4 in this embodiment passes through the relief opening 6 and extends out of the denitrification reactor 1. In order to prevent air leakage when the denitrification reactor 1 is working, the relief opening 6 is sealed by the sealing plate 10. Before the hoisting assembly 5 on the I-beam 4 needs to slide, the sealing plate 10 can be directly removed. In order to further improve the sealing performance of the sealing plate 10, an asbestos-supported sealing strip is also laid between the sealing plate 10 and the relief opening 6.

[0032] As a preferred solution provided by a rapid replacement device for SCR denitrification catalyst, two stepping platforms 11 are fixedly installed on the side wall of the denitrification reactor 1, and the tops of the two stepping platforms 11 are flush with the bottoms of the two inspection ports 2 respectively.

[0033] As a further explanation of this embodiment, in this embodiment, the catalyst to be replaced is placed on the stepping platform 11 to facilitate the connection operation of the hoisting assembly 5 to the catalyst before hoisting. The stepping platform 11 is also available for construction workers to stand on. Furthermore, in order to improve the safety of the construction work environment, a fence can be set up around the stepping platform 11 to prevent construction workers from falling from the edge of the stepping platform 11.

[0034] As a preferred solution provided by a rapid replacement device for SCR denitrification catalyst, the side wall of the denitrification reactor 1 is provided with an inspection port 12, and the side wall of the denitrification reactor 1 is hinged with a cover plate 13 for sealing the inspection port 12.

[0035] As a further explanation of this embodiment, in this embodiment, during routine maintenance and repair, technicians can directly inspect the internal condition of the denitrification reactor 1 from the outside by opening the cover plate 13, which facilitates the judgment of subsequent disassembly and repair plans and avoids repetitive work.

[0036] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0037] In practical applications, after confirming the need to replace the catalyst in the denitrification reactor 1 through the inspection port 12, the hook 9 in the hoisting assembly 5 is connected to the inspection door 3. Then, the connection between the inspection door 3 and the side wall of the denitrification reactor 1 is released, and the sealing plate 10 is removed. Using the hoist 8 and the monorail trolley 7, the inspection door 3 is lifted away from the denitrification reactor 1, exposing the inspection port 2. The hoisting assembly 5 is then reset, and the catalyst module to be replaced is placed on the platform 11. Workers connect the hook 9 to the catalyst module, and then the hoist is lifted using a motor. The monorail trolley 7 then places the catalyst module horizontally into the denitrification reactor 1 along the inspection port 2. The hook 9 is released, and the monorail trolley 7 is reset to complete the catalyst module replacement. After the catalyst replacement is complete, the inspection door 3 and the sealing plate 10 are re-fixed to the side wall of the denitrification reactor 1 to complete the overall catalyst replacement process.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid replacement device for SCR denitrification catalyst, comprising a denitrification reactor (1), characterized in that, The denitrification reactor (1) has two inspection ports (2) on its side wall. The side wall of the denitrification reactor (1) is fixedly equipped with an inspection door (3) for sealing the inspection ports (2). Multiple I-beams (4) are fixedly installed inside the denitrification reactor (1), and one end of each I-beam (4) extends out of the denitrification reactor (1) and is slidably equipped with a hoisting assembly (5). The side wall of the denitrification reactor (1) is provided with an avoidance port (6) for avoiding the I-beams (4).

2. The SCR denitrification catalyst rapid replacement device according to claim 1, characterized in that, The hoisting assembly (5) includes a single-track trolley (7) that is slidably installed at the end of the I-beam (4), and a lifting hoist (8) is hoisted at the bottom of the single-track trolley (7), and a hook (9) is hoisted at the bottom of the lifting hoist (8).

3. The SCR denitrification catalyst rapid replacement device according to claim 2, characterized in that, The hoist (8) is connected to the hook (9) and the monorail trolley (7) via a chain, and the hoist (8) is externally connected to a motor for driving the chain to extend and retract.

4. The SCR denitrification catalyst rapid replacement device according to claim 1, characterized in that, The denitrification reactor (1) is fixedly installed with a sealing plate (10) for sealing the avoidance port (6) on its side wall.

5. The SCR denitrification catalyst rapid replacement device according to claim 1, characterized in that, The denitrification reactor (1) has two foot platforms (11) fixedly installed on its side wall, and the tops of the two foot platforms (11) are flush with the bottoms of the two inspection ports (2).

6. The SCR denitrification catalyst rapid replacement device according to claim 1, characterized in that, The denitrification reactor (1) has an inspection port (12) on its side wall, and the side wall of the denitrification reactor (1) is hinged with a cover plate (13) for sealing the inspection port (12).

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