Flue gas denitration pretreatment device

Abstract

The utility model discloses a flue gas denitration pretreatment device which comprises a plurality of supporting seats fixedly arranged on a flue gas pipeline, a fixed shell is arranged on the supporting seats, the fixed shell comprises crisscrossed fixed plates, an accommodating space is formed between the fixed plates, an adsorption module is arranged in the accommodating space, and the adsorption module is arranged on the supporting seats. A front processing structure is arranged below the fixed shell and comprises two groups of baffle structures which are arranged up and down, the lower baffle structure comprises a plurality of groups of V-shaped plates which are arranged at intervals, the upper baffle structure comprises a plurality of groups of inverted V-shaped plates which are arranged at intervals, and the inverted V-shaped plates are arranged above the space between the two V-shaped plates and block the space between the two V-shaped plates. According to the utility model, the pre-treatment structure is arranged to partially intercept particulate impurities, so that the impurities entering the adsorption module are reduced, and the service life of the adsorption module is prolonged; and meanwhile, the arrangement of the pre-processing structure is matched with the fixed shell to realize positioning, so that the step of additionally installing the structure in the flue gas pipeline is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas denitrification equipment, specifically to a flue gas denitrification pretreatment device. Background Technology

[0002] Coking flue gas produced by coal combustion needs to undergo desulfurization, denitrification, and dust removal processes to meet standards before it can be emitted into the air. However, the flue gas contains harmful substances such as tar and dust. Tar can also adsorb particulate matter in the flue gas, forming hard, blocky ash that clogs the catalyst channels and affects denitrification. To solve these problems, a Chinese utility model patent with application number 201821862765.6 discloses a coking flue gas denitrification pretreatment device. It uses multiple arrayed pretreatment modules to perform impurity adsorption pretreatment, thereby ensuring the subsequent denitrification catalytic effect. However, in the above structure, the flue gas directly contacts the pretreatment modules for adsorption, resulting in significant wear and tear on the pretreatment modules and a short effective usage time. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a flue gas denitrification pretreatment device that guarantees both performance and service life.

[0004] To achieve the above objectives, this utility model provides a flue gas denitrification pretreatment device, which adopts the following technical solution:

[0005] A flue gas denitrification pretreatment device includes multiple support seats fixedly arranged on a flue gas duct. A fixed shell is arranged on the support seats. The fixed shell includes crisscrossing fixed plates, and an accommodating space is formed between the fixed plates. An adsorption module is arranged in the accommodating space. The adsorption module is also placed on the support seat. A pretreatment structure is provided below the fixed shell. The pretreatment structure includes two sets of baffle structures arranged vertically. The lower baffle structure includes multiple sets of V-shaped plates arranged at intervals. The upper baffle structure includes multiple sets of inverted V-shaped plates arranged at intervals. The inverted V-shaped plates are placed above the space between the two V-shaped plates and block the space between the two V-shaped plates.

[0006] A further improvement of the flue gas denitrification pretreatment device of this utility model is that multiple sets of V-shaped plates are provided with lower plates at the front and rear, and multiple sets of inverted V-shaped plates are provided with upper plates at the front and rear. The upper plates and lower plates are connected by connecting plates, and the upper plates are connected to the fixed shell by connecting structures.

[0007] A further improvement of the flue gas denitrification pretreatment device of this utility model is that the connecting structure includes a connecting rod, and a through groove is provided between the upper and lower end faces of the fixing plate of the fixed housing. The connecting rod passes through the through groove, the lower end of the connecting rod is connected to the upper plate, and a nut is screwed to the upper end of the connecting rod, with the nut abutting against the fixing plate.

[0008] A further improvement of the flue gas denitrification pretreatment device of this utility model is that a through hole is provided on the support base, the through hole is opposite to the through groove, and the connecting rod passes through the through hole and through groove from bottom to top.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention, by setting up a pre-treatment structure, partially intercepts particulate impurities in advance, thereby reducing the impurities entering the adsorption module and extending the service life of the adsorption module. At the same time, the layout of the pre-treatment structure, together with the fixed shell, achieves positioning, reducing the steps of adding structures inside the flue gas duct and improving assembly efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the diagram: 1. Flue gas duct, 2. Support base, 3. Fixing plate, 4. Upper plate, 5. Lower plate, 6. Inverted V-shaped plate, 7. V-shaped plate, 8. Connecting plate, 9. Connecting rod, 10. Nut. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1 As shown, a flue gas denitrification pretreatment device includes multiple support seats 2 fixedly arranged on a flue gas duct 1. A fixed housing is arranged on each support seat, and the fixed housing includes crisscrossing fixed plates 3, forming an accommodating space between the fixed plates. The fixed plates are connected to the support seats by bolts. An adsorption module, typically an activated carbon adsorption module, is arranged within the accommodating space. The adsorption module is also placed on the support seat. A pretreatment structure is located below the fixed housing, comprising two sets of baffle structures arranged vertically. The lower baffle structure includes multiple sets of spaced-apart V-shaped plates 7, and the upper baffle structure includes multiple sets of spaced-apart inverted V-shaped plates 6. The inverted V-shaped plates are positioned above and between the two V-shaped plates, blocking the space between them. The lower end of the inverted V-shaped plates is flush with the upper surface of the upper V-shaped plates.

[0015] Multiple sets of V-shaped plates are equipped with lower plates 5 at the front and rear, and multiple sets of inverted V-shaped plates are equipped with upper plates 4 at the front and rear. The upper and lower plates are connected by connecting plates 8, and the upper plates are connected to the fixed housing through a connecting structure. The baffle structure is integrally connected to the fixed housing. The V-shaped plates basically cover the flue gas duct, and the small gaps at the edges can be ignored and do not affect the effectiveness of blocking most particles.

[0016] The connecting structure includes a connecting rod 9. A through slot is provided between the upper and lower end faces of the fixing plate of the fixed housing. The connecting rod passes through the through slot, and its lower end is connected to the upper plate. The connection method can be detachable. A nut 10 is screwed to the upper end of the connecting rod, and the nut abuts against the fixing plate. A through hole is provided on the support base, with the through hole facing the through slot. The connecting rod passes through the through hole and through the slot from bottom to top. The diameter of the nut can be larger than the thickness of the fixing plate, which can also limit the position of the adsorption module.

[0017] The working principle of this utility model is as follows: the flue gas rises in the flue gas duct, first passes through the baffle structure, where some impurity particles are intercepted, and then passes through the adsorption module to further adsorb the tar in the flue gas; when the baffle structure needs to be replaced, the connection between the connecting rod and the upper plate can be disassembled to replace the baffle structure.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flue gas denitration pretreatment device, characterized by: The device includes multiple support seats fixedly installed on the flue gas duct. A fixed housing is installed on each support seat. The fixed housing includes crisscrossing fixed plates, forming an accommodating space between the fixed plates. An adsorption module is installed in the accommodating space and is also placed on the support seat. A pre-treatment structure is provided below the fixed housing. The pre-treatment structure includes two sets of baffle structures arranged vertically. The lower baffle structure includes multiple sets of spaced V-shaped plates, and the upper baffle structure includes multiple sets of spaced inverted V-shaped plates. The inverted V-shaped plates are placed above the space between the two V-shaped plates and block the space between the two V-shaped plates.

2. The flue gas denitration pretreatment device according to claim 1, characterized in that: Multiple sets of V-shaped plates have lower plates at the front and rear, and multiple sets of inverted V-shaped plates have upper plates at the front and rear. The upper and lower plates are connected by a connecting plate, and the upper plate is connected to the fixed shell by a connecting structure.

3. The flue gas denitration pretreatment device according to claim 2, characterized in that: The connecting structure includes a connecting rod. A through groove is provided between the upper and lower end faces of the fixing plate of the fixed housing. The connecting rod passes through the through groove. The lower end of the connecting rod is connected to the upper plate. A nut is screwed onto the upper end of the connecting rod, and the nut abuts against the fixing plate.

4. The flue gas denitration pretreatment device according to claim 3, characterized in that: The support base is provided with a through hole, which faces the through groove. The connecting rod passes through the through hole and through groove from bottom to top.

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