Tail gas treatment device of thermal power plant

Abstract

The utility model discloses a tail gas treatment device of a thermal power plant, which relates to the technical field of tail gas treatment, and comprises a connecting component arranged on one side of a boiler, a filtering component arranged on one side of the connecting component, and a pretreatment mechanism is arranged in an inner cavity of a first connecting pipeline, so that tail gas enters the inner cavity of the first connecting pipeline after being introduced into the inner cavity of the first connecting pipeline; the tail gas firstly passes through the filter screen layers in the inner cavity of the circular ring frame, and three filter screen layers are arranged in the inner cavity of the first connecting pipeline, so that part of large particles in the tail gas are directly filtered and intercepted by the filter screen layers, and the particles are attached to the two sides of the outer walls of the filter screen layers; part of particulate matters can directly fall into an inner cavity of a collecting groove when falling from the upper end of the filter screen layer, the particulate matters in the tail gas are intercepted in advance through the arrangement of the filter screen layer, the working pressure of the filter assembly is reduced, and an operator can regularly take out the circular ring frame and treat dust on the surface of the filter screen layer.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for a thermal power plant. Background Art

[0002] Thermal power plants are factories that convert heat energy generated by burning solid fuels or liquid fuels such as coal, oil, and natural gas into kinetic energy to produce electricity. They are the main force in the development of electricity in modern society. In the process of generating electricity in thermal power plants, solid or liquid fuels are burned, which will produce a large amount of exhaust gas. If it is directly discharged into the air without treatment, the sulfur dioxide and other harmful gases contained in the exhaust gas will cause great pollution to the air.

[0003] For example, a Chinese patent with announcement number CN215447462U discloses a highly efficient and environmentally friendly tail gas treatment device for thermal power plants, including a boiler, a first connecting pipe fixedly connected to one side of the boiler, a filter device fixedly connected to the boiler through the first connecting pipe, a second connecting pipe fixedly connected to one side of the filter device, a flue gas heat exchanger fixedly connected to one end of the second connecting pipe away from the filter device, and a third connecting pipe fixedly connected to one side of the flue gas heat exchanger. The utility model has the advantages that the filtered tail gas enters the flue gas heat exchanger again for heat exchange, the structure is reasonable, the filter device is set, the tail gas enters the filter device through the first connecting pipe, the activated carbon filter filters the particulate matter in the tail gas, the activated carbon filter is plugged into the shell for easy removal, cleaning or replacement, and the top cover is fixedly installed on the top of the shell by bolts, which is convenient for cleaning or repairing the inside of the filter device after disassembly.

[0004] The exhaust gas treatment device proposed in the above patent introduces the exhaust gas in the boiler into the filtering device for treatment through the first connecting pipe. Since the untreated exhaust gas contains particulate matter, when the exhaust gas passes through the first connecting pipe, some of the exhaust gas particles will fall into the connecting pipe, and all the untreated exhaust gas is filtered through the filtering device, resulting in a higher working pressure of the filtering device.

[0005] Therefore, we propose an exhaust gas treatment device for a thermal power plant in order to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide an exhaust gas treatment device for a thermal power plant to solve the problem proposed in the above background technology that due to the presence of particulate matter in the untreated exhaust gas, when the exhaust gas passes through the first connecting pipe, some exhaust gas particles will fall into the connecting pipe, and all the untreated exhaust gas is filtered through the filtering device, resulting in a high working pressure of the filtering device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust gas treatment device for a thermal power plant, comprising a boiler, a connecting component is arranged on one side of the boiler, a filter component is arranged on one side of the connecting component, a flue gas heat exchange component is arranged on one side of the filter component, a desulfurization component is arranged on one side of the flue gas heat exchange component, and the exhaust gas is passed into the inner cavity of the filter component for treatment through the setting of the connecting component;

[0008] The connecting assembly includes a first connecting pipe and a positioning mechanism threadedly fixedly installed on the upper end of the first connecting pipe, and a pretreatment mechanism is fixedly installed on the lower end of the positioning mechanism. The positioning mechanism is used to support and drive the pretreatment mechanism to be set in the inner cavity of the first connecting pipe to filter the exhaust gas passing through the inner cavity of the first connecting pipe.

[0009] Preferably, a plurality of insertion grooves are linearly and evenly spaced on the upper end of the first connecting pipe, a sealing gasket is embedded around the upper end of the groove, an embedded groove is opened on the inner wall of the insertion groove, and a plurality of circular magnets are linearly and evenly spaced on the inner wall of the first connecting pipe.

[0010] Preferably, the positioning mechanism includes an arc-shaped cover plate and an extended long block fixedly mounted in the middle of the lower end of the arc-shaped cover plate.

[0011] Preferably, elastic elements are fixedly mounted on the outer walls of both sides of the extension block, and a semicircular clamping ball is fixedly mounted on one end of the elastic element.

[0012] Preferably, the pretreatment mechanism comprises a circular frame and corresponding magnetic tiles embedded around the outer wall of the circular frame, and a filter mesh layer is embedded in the middle of the circular frame.

[0013] Preferably, fitting semicircular blocks are fixedly installed on both sides of the lower end of the outer wall of the circular ring frame, and a collecting groove is provided in the middle part of the upper end of the fitting semicircular block.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. After the exhaust gas enters the inner cavity of the first connecting pipe, the exhaust gas will first pass through the filter layer in the inner cavity of the circular ring frame, so that some larger particles in the exhaust gas are directly filtered and intercepted by the filter layer. At the same time, the particles will adhere to both sides of the outer wall of the filter layer. If some particles fall from the upper end of the filter layer, they will directly fall into the inner cavity of the collection groove. The particle matter in the exhaust gas is intercepted in advance by setting the filter layer, reducing the working pressure of the filter assembly, and the operator can take out the circular ring frame regularly to deal with the dust on the surface of the filter layer.

[0016] 2. The arc-shaped cover plate drives the extension block and the circular ring frame to be inserted into the inner cavity of the insertion groove. After the circular ring frame is inserted into the inner cavity of the first connecting pipe, the semicircular clamping balls fixedly installed on both sides of the outer wall of the extension block by elastic elements will be embedded in the inner cavity of the embedded groove for fixation, thereby completing the setting position of the extension block, and the arc-shaped cover plate is fixedly installed on the upper end of the insertion groove by screws, which is stably installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the first connecting pipeline of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the positioning mechanism and pre-processing mechanism of the utility model.

[0021] In the figure: 1. boiler; 2. connecting component; 21. first connecting pipe; 211. insertion groove; 212. sealing gasket; 213. embedded groove; 214. round magnetic tile; 22. positioning mechanism; 221. arc-shaped cover plate; 222. extension block; 223. elastic element; 224. semicircular card ball; 23. pretreatment mechanism; 231. circular ring frame; 232. corresponding magnetic tile; 233. filter mesh layer; 234. fitting semicircular block; 235. collecting groove; 3. filtering component; 4. flue gas heat exchange component; 5. desulfurization component. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] Example 1: Please refer to Figure 1-3 The utility model provides a technical solution: an exhaust gas treatment device for a thermal power plant, comprising a boiler 1, a connecting component 2 is arranged on one side of the boiler 1, a filtering component 3 is arranged on one side of the connecting component 2, a flue gas heat exchange component 4 is arranged on one side of the filtering component 3, a desulfurization component 5 is arranged on one side of the flue gas heat exchange component 4, and the connecting component 2 is arranged to pass the exhaust gas into the inner cavity of the filtering component 3 for treatment.

[0024] The connecting assembly 2 includes a first connecting pipe 21 and a positioning mechanism 22 threadedly fixedly installed on the upper end of the first connecting pipe 21, and a pretreatment mechanism 23 is fixedly installed on the lower end of the positioning mechanism 22. The positioning mechanism 22 is used to support and drive the pretreatment mechanism 23 to be set in the inner cavity of the first connecting pipe 21, so as to filter the exhaust gas passing through the inner cavity of the first connecting pipe 21.

[0025] The pretreatment mechanism 23 includes a circular frame 231 and corresponding magnetic tiles 232 embedded around the outer wall of the circular frame 231. A filter mesh layer 233 is embedded in the middle of the circular frame 231. Fitting semicircular blocks 234 are fixedly installed on both sides of the lower end of the outer wall of the circular frame 231. A collecting groove 235 is opened in the middle of the upper end of the fitting semicircular block 234. The circular frame 231 passes through the inner cavity of the insertion groove 211 and enters the inner cavity of the first connecting pipe 21 for placement. The corresponding magnetic tiles 232 and the circular magnetic tiles 214 are magnetically connected. The setting of the filter mesh layer 233 is used to intercept particulate matter in the incoming exhaust gas, and the setting of the collecting groove 235 is used to collect some fallen particulate matter.

[0026] Specifically, by installing a pretreatment mechanism 23 in the inner cavity of the first connecting pipe 21, after the exhaust gas enters the inner cavity of the first connecting pipe 21, the exhaust gas will first pass through the filter mesh layer 233 in the inner cavity of the circular frame 231. Since three filter mesh layers 233 are arranged in the inner cavity of the first connecting pipe 21, some larger particles in the exhaust gas are directly filtered and intercepted by the filter mesh layer 233, so that the particles adhere to both sides of the outer wall of the filter mesh layer 233. If some particles fall from the upper end of the filter mesh layer 233, they will directly fall into the inner cavity of the collection groove 235. The setting of the filter mesh layer 233 can intercept and process the particles in the exhaust gas in advance, reduce the working pressure of the filter component 3, and the operator can regularly take out the circular frame 231 to process the dust on the surface of the filter mesh layer 233.

[0027] Example 2: Please refer to Figure 4 The upper end of the first connecting pipe 21 is linearly and evenly spaced with a plurality of insertion grooves 211, the upper end of the insertion groove 211 is embedded with a sealing gasket 212 around the groove upper end, the inner wall of the insertion groove 211 is provided with an embedded groove 213, and the embedded groove 213 is provided in three groups. The inner wall of the first connecting pipe 21 is linearly and evenly spaced with a plurality of circular magnets 214.

[0028] The positioning mechanism 22 includes an arc-shaped cover plate 221 and an extension block 222 fixedly installed in the middle of the lower end of the arc-shaped cover plate 221. The extension block 222 is movably installed in the inner cavity of the insertion groove 211. Elastic elements 223 are fixedly installed on the outer walls of both sides of the extension block 222. The elastic elements 223 are arranged in three groups. A semicircular clamping ball 224 is fixedly installed at one end of the elastic element 223. The elastic element 223 drives the semicircular clamping ball 224 to be movably embedded in the inner cavity of the embedded groove 213, thereby completing the position fixation of the extension block 222.

[0029] Specifically, when installing the pretreatment mechanism 23, the operator first drives the arc cover plate 221 to insert the extension block 222 and the circular ring frame 231 into the inner cavity of the insertion groove 211, so that the circular ring frame 231 is inserted into the inner cavity of the first connecting pipe 21 through the insertion groove 211 for placement, and at the same time, the corresponding magnetic sticker 232 embedded in the outer wall of the circular ring frame 231 and the circular magnetic sticker 214 set on the inner wall of the first connecting pipe 21 are magnetically connected. After the circular ring frame 231 is inserted into the inner cavity of the first connecting pipe 21, the semicircular snap balls 224 fixedly installed on both sides of the outer wall of the extension block 222 by the elastic element 223 will be embedded in the inner cavity of the embedded groove 213 for fixation, thereby completing the setting position fixation of the extension block 222, and the arc cover plate 221 is fixedly installed on the upper end of the insertion groove 211 by screws, and the installation is stable.

[0030] Working principle: When installing the pretreatment mechanism 23, the operator first drives the arc cover plate 221 to drive the extension block 222 and the circular ring frame 231 to be inserted into the inner cavity of the insertion groove 211, so that the circular ring frame 231 is inserted into the inner cavity of the first connecting pipe 21 through the insertion groove 211 for placement. At the same time, the corresponding magnetic patch 232 embedded in the outer wall of the circular ring frame 231 and the circular magnetic patch 214 set on the inner wall of the first connecting pipe 21 are magnetically connected. After the circular ring frame 231 is inserted into the inner cavity of the first connecting pipe 21, the semicircular clamping balls 224 fixedly installed on both sides of the outer wall of the extension block 222 by the elastic element 223 will be clamped and embedded in the inner cavity of the embedded groove 213. The arc cover plate 221 is fixed to the upper end of the insertion groove 211 by screws, and the exhaust gas passes through the filter mesh layer 233 in the inner cavity of the circular ring frame 231 after entering the inner cavity of the first connecting pipe 21. Since three filter mesh layers 233 are arranged in the inner cavity of the first connecting pipe 21, some larger particles in the exhaust gas are directly filtered and intercepted by the filter mesh layer 233, so that the particles adhere to the outer wall of the filter mesh layer 233 on both sides. If some particles fall from the upper end of the filter mesh layer 233, they will directly fall into the inner cavity of the collection groove 235 for collection.

[0031] It should be noted that the filter assembly 3, the flue gas heat exchange assembly 4 and the desulfurization assembly 5 are equipped with core components that can support the normal operation of the filter assembly 3, the flue gas heat exchange assembly 4 and the desulfurization assembly 5. These core components are used for normal operation and are not an innovative part of the present application document. They are also common knowledge. Those skilled in the art are capable of thinking of the specific structure and structural layout.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust gas treatment device for a thermal power plant, comprising a boiler (1), characterized in that: A connecting component (2) is provided on one side of the boiler (1), a filtering component (3) is provided on one side of the connecting component (2), a flue gas heat exchange component (4) is provided on one side of the filtering component (3), a desulfurization component (5) is provided on one side of the flue gas heat exchange component (4), and the connecting component (2) is used to pass exhaust gas into the inner cavity of the filtering component (3) for treatment; The connection assembly (2) comprises a first connection pipe (21) and a positioning mechanism (22) threadedly fixedly mounted on the upper end of the first connection pipe (21); a pre-treatment mechanism (23) is fixedly mounted on the lower end of the positioning mechanism (22); the positioning mechanism (22) is used to support and drive the pre-treatment mechanism (23) to be arranged in the inner cavity of the first connection pipe (21), so as to filter the exhaust gas passing through the inner cavity of the first connection pipe (21).

2. The tail gas treatment device of a thermal power plant according to claim 1, characterized in that: The upper end of the first connecting pipe (21) is provided with a plurality of insertion grooves (211) at equal intervals in a linear manner, a sealing gasket (212) is embedded around the upper end of the groove of the insertion groove (211), an embedded groove (213) is provided on the inner wall of the insertion groove (211), and a plurality of circular magnetic tiles (214) are provided on the inner wall of the first connecting pipe (21) at equal intervals in a linear manner.

3. The tail gas treatment device of a thermal power plant according to claim 1, characterized in that: The positioning mechanism (22) comprises an arc-shaped cover plate (221) and an extended long block (222) fixedly mounted at the middle portion of the lower end of the arc-shaped cover plate (221).

4. The tail gas treatment device of a thermal power plant according to claim 3, characterized in that: Elastic elements (223) are fixedly mounted on the outer walls of both sides of the extension block (222), and a semicircular clamping ball (224) is fixedly mounted on one end of the elastic element (223).

5. The tail gas treatment device of a thermal power plant according to claim 1, characterized in that: The pre-treatment mechanism (23) comprises a circular frame (231) and corresponding magnetic tiles (232) embedded around the outer wall of the circular frame (231), and a filter mesh layer (233) is embedded in the middle of the circular frame (231).

6. The tail gas treatment device of a thermal power plant according to claim 5, characterized in that: Fitting semicircular blocks (234) are fixedly mounted on both sides of the lower end of the outer wall of the circular ring frame (231), and a collecting groove (235) is provided in the middle of the upper end of the fitting semicircular block (234).

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