Flue gas purification treatment device for power station boiler

Abstract

The utility model provides a flue gas purification treatment device for a power station boiler. The flue gas purification treatment device comprises a purification box, a gas inlet pipe group and a drying pipe group, a water purifying pool used for cleaning impurities is arranged in the purifying box, an air inlet of the purifying box is connected with the air inlet pipeline, and an air outlet of the purifying box is connected with the conveying end of the drying pipe set; the input end of the gas inlet pipe group is connected with a flue; the drying pipe group is filled with a drying agent for drying flue gas, and the drying pipe group is used for drying the flue gas input into the flue gas analyzer. According to the flue gas analyzer disclosed by the utility model, impurities mixed in the flue gas are filtered out after passing through the water purifying tank through the arrangement of the water purifying tank in the water purifying tank, so that the flue gas analyzer is prevented from being damaged by the impurities contained in the flue gas in the flue.

Description

Technical Field

[0001] The utility model belongs to the technical field of power station boiler performance testing, and in particular relates to a flue gas purification treatment device for power station boilers. Background Art

[0002] During the performance test of power plant boilers, it is necessary to frequently collect flue gas from multiple measuring holes arranged along the width of the furnace on the flue at the rear of the furnace. The flue gas collected from different measuring holes is mixed and then passed into the flue gas analyzer to analyze the volume fraction of its main components (O2, CO, NO, etc.). When collecting flue gas from multiple measuring holes, it is usually encountered that the flue gas flow rates collected by each measuring hole are different, resulting in deviations between the composition of the mixed flue gas and the actual flue gas composition in the tail flue, which in turn affects the accuracy of the analysis results.

[0003] When using a flue gas analyzer to analyze flue gas components, the flue gas needs to be passed into the flue gas analyzer through a duct. The flue gas contains a lot of impurities such as smoke and moisture. These impurities entering the flue gas analyzer will not only affect the normal operation of the flue gas analyzer, but also affect the accuracy of the analysis results. How to remove impurities in the flue gas during the test has become a problem that test engineers often face. Utility Model Content

[0004] In order to solve the problem described in the background technology that when using a flue gas analyzer to analyze the flue gas components, the flue gas needs to be passed into the flue gas analyzer through a conduit, and the flue gas contains a large amount of impurities such as smoke and moisture. These impurities entering the flue gas analyzer will not only affect the normal operation of the flue gas analyzer, but also affect the accuracy of the analysis results. The utility model proposes the following technical solutions:

[0005] A flue gas purification device for a power station boiler, comprising: a purification box (1), an air intake pipe group (2), and a drying pipe group (3); a clean water pool (11) for cleaning impurities is provided inside the purification box (1); the air intake of the purification box (1) is connected to the air intake pipe group (2), and the air outlet of the purification box (1) is connected to the output end of the drying pipe group (3); each group of the air intake pipe group (2) comprises: a vertical pipe (21), a hose (22), and a horizontal pipe (23); the vertical pipe (21) is respectively connected to the hose (22) and the horizontal pipe (23), and one end of the hose (22) is inserted into The purification box (1) is below the liquid level of the clean water tank (11), and one end of the horizontal pipe (23) is connected to the flue; the drying tube group (3) is filled with a desiccant for drying flue gas, and the drying tube group (3) is used to dry the flue gas input into the flue gas analyzer; the drying tube group (3) includes a plurality of drying pipes (31), one end of each of the drying pipes (31) is connected to the flue gas analyzer, the other end of each of the drying pipes (31) penetrates into the purification box (1), and the other end of each of the drying pipes (31) is located above the liquid level of the clean water tank (11).

[0006] Wherein, each group of the air intake pipe group further includes: a regulating valve and a flow meter, the regulating valve is arranged on the horizontal pipe, and the flow meter is arranged on the vertical pipe.

[0007] Furthermore, each of the drying pipes is a transparent glass pipe, and each of the drying pipes is filled with a desiccant, and each of the vertical pipes is also provided with a float.

[0008] Furthermore, cotton is filled at one end of the drying duct close to the purification box to form a water absorbing layer.

[0009] Furthermore, the desiccant is color-changing silica gel particles.

[0010] Beneficial effect: The utility model provides a water purification pool in the water purification tank so that impurities mixed in the flue gas are filtered out after passing through the water purification pool, thereby preventing the flue gas analyzer from being damaged by impurities contained in the flue gas in the flue. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a flue gas purification device for a power station boiler according to an embodiment of the utility model;

[0012] Figure 2 It is a schematic cross-sectional structure diagram of a flue gas purification device for a power station boiler according to an embodiment of the utility model. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the present application clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0014] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0015] Figure 1 The figure is a schematic structural diagram of a flue gas purification device for a power station boiler according to an embodiment of the utility model.

[0016] Reference Figure 1 A flue gas purification device for a power plant boiler, characterized in that it comprises: a purification box 1, an air intake pipe group 2, and a drying pipe group 3. A clean water pool 11 for cleaning impurities is provided inside the purification box 1, the air intake of the purification box 1 is connected to the air intake pipe group, and the air outlet of the purification box 1 is connected to the input end of the drying pipe group 3. The input end of the air intake pipe group 2 is connected to the flue. The drying pipe group 3 is filled with a desiccant for drying flue gas, and the drying pipe group 3 is used to dry the flue gas input to the flue gas analyzer.

[0017] Specifically, each air intake pipe group 2 includes: a vertical pipe 21, a hose 22 and a horizontal pipe 23. The extension direction of the vertical pipe 21 is the same as the height direction of the purification box 1, and the two ends of the vertical pipe 21 are connected to the hose 22 and the horizontal pipe 23 respectively. The hose 22 is flexible, one end of which penetrates into the purification box 1 and enters below the liquid level of the clean water pool 11, and the other end of the hose 22 is bent to form an arc and connected to the vertical pipe 21. The extension direction of the horizontal pipe 23 is the same as the width direction of the purification box 1, and the vertical pipe 21 and the horizontal pipe 23 are vertically connected. The horizontal pipe 23 is connected to the flue to serve as the smoke inlet of the vertical pipe 21.

[0018] Figure 2 It is a schematic cross-sectional structure diagram of a flue gas purification device for a power station boiler according to an embodiment of the utility model.

[0019] Further, in order to better control the flow of each intake pipe group 2, refer to Figure 2In this embodiment, each air intake pipe group 2 also includes: a regulating valve 24 and a flow meter 25. Among them, the regulating valve 24 is located on the outer peripheral surface of the horizontal pipe 23, and the flow meter 25 is arranged in the vertical pipe 21. In the process of flue gas collection, the flue gas flow entering the horizontal pipe 23 is adjusted by the regulating valve 24 until the flow meter 25 shows that the flow rates in each vertical pipe 21 are similar, thereby stabilizing the flow rate of the flue gas. Preferably, in this embodiment, each vertical pipe 21 is a transparent glass tube, and a float 4 is arranged in each vertical pipe 21. The flue gas flow in each vertical pipe 21 can be regulated by controlling the opening of the regulating valve 24, and the height of the flue gas flow in the corresponding vertical pipe 21 can be quickly judged by observing the height of the float 4 in the flow meter.

[0020] Specifically, each drying tube group 3 includes a plurality of drying pipes 31. One end of each drying pipe 31 is connected to the flue gas analyzer, and the other end of each drying pipe 31 penetrates into the purification box 1 and is located above the liquid level of the clean water pool 11. Preferably, in order to facilitate the observation of the dryness of the flue gas, in this embodiment, each vertical tube 21 and each drying pipe 31 are transparent glass tubes. The desiccant uses color-changing silica gel particles. When the flue gas passes through the drying pipe 31, the color-changing silica gel particles absorb the moisture in the flue gas and change color. Inside the drying pipe 31, as the flue gas flows, the color-changing silica gel particles show regular color changes according to the distance from the purification box 1. The monitoring personnel can judge whether the flue gas is completely dry according to whether the color-changing silica gel particles at the outlet end of the drying pipe 31 change color. When the color-changing silica gel particles near the outlet end begin to change color, the inside of the drying pipe 31 needs to be refilled with dry color-changing silica gel particles. In order to reduce the number of filling times of the color-changing silica gel particles, in another embodiment, the drying pipe 31 near one end of the purification box 1 is filled with cotton to form a water-absorbing layer. Under the action of the water-absorbing layer, the adsorption effect at the drying pipe 31 near one end of the purification box 1 is greatly increased, thereby reducing the number of filling times of the color-changing silica gel particles.

[0021] In summary, the utility model provides a water purification pool in the water purification tank so that the impurities mixed in the flue gas are filtered out after passing through the water purification pool, thereby preventing the flue gas analyzer from being damaged by the impurities contained in the flue gas in the flue. Furthermore, the utility model dries the flue gas flowing into the flue gas analyzer by providing a drying pipe and a desiccant provided in the drying pipe, thereby preventing the flue gas analyzer from being affected by the moisture in the flue gas. Furthermore, the utility model selects the desiccant as color-changing silica gel particles and the drying pipe as transparent glass, thereby making the drying effect of the flue gas intuitively visible.

[0022] The above description is of certain embodiments of the invention. Other embodiments are within the scope of the following claims.

[0023] The terms "exemplary," "example," and the like used throughout this specification mean "used as an example, instance, or illustration" and do not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0024] The optional implementation modes of the embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the utility model are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the utility model, the technical scheme of the embodiments of the utility model can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the utility model.

[0025] The above description of the contents of this specification is provided to enable any person of ordinary skill in the art to implement or use the contents of this specification. Various modifications to the contents of this specification will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the contents of this specification. Therefore, the contents of this specification are not limited to the examples and designs described herein, but are consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A flue gas purification device for a power station boiler, characterized in that: include: A purification box (1), an air intake pipe group (2), and a drying pipe group (3); a clean water pool (11) for cleaning impurities is provided inside the purification box (1); an air intake of the purification box (1) is connected to the air intake pipe group (2), and an air outlet of the purification box (1) is connected to an input end of the drying pipe group (3); each group of the air intake pipe group (2) comprises: a vertical pipe (21), a hose (22), and a horizontal pipe (23); the vertical pipe (21) is respectively connected to the hose (22) and the horizontal pipe (23); one end of the hose (22) penetrates into the purification box (1) and enters The flue gas analyzer is configured to be configured to be configured to be configured to be below the liquid level of the clean water tank (11), and one end of the horizontal pipe (23) is connected to the flue; the drying pipe group (3) is filled with a desiccant for drying flue gas, and the drying pipe group (3) is used to dry the flue gas input into the flue gas analyzer; the drying pipe group (3) comprises a plurality of drying pipes (31), one end of each of the drying pipes (31) is connected to the flue gas analyzer, the other end of each of the drying pipes (31) penetrates into the purification box (1), and the other end of each of the drying pipes (31) is located above the liquid level of the clean water tank (11).

2. A flue gas purification device for a power plant boiler according to claim 1, characterized in that: Each of the air intake pipe groups (2) further comprises: a regulating valve (24) and a flow meter (25); the regulating valve (24) is arranged on the horizontal pipe (23), and the flow meter (25) is arranged on the vertical pipe (21).

3. A flue gas purification device for a power plant boiler according to claim 2, characterized in that: Each of the drying pipes (31) and each of the vertical pipes (21) is a transparent glass pipe, and each of the drying pipes (31) is filled with a desiccant, and each of the vertical pipes (21) is also provided with a floating ball (4).

4. A flue gas purification device for a power plant boiler according to claim 3, characterized in that: One end of the drying pipe (31) close to the purification box (1) is filled with cotton to form a water absorption layer.

5. A flue gas purification device for a power station boiler according to claim 4, characterized in that: The desiccant is color-changing silica gel particles.

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