Flue gas desulfurization device for thermal power plant

Abstract

The utility model discloses a flue gas desulfurization device of thermal power plant, relates to flue gas desulfurization device technical field, including outer shell, flue gas inlet subassembly and equalize flow subassembly, the flue gas inlet subassembly is equipped with the flue gas inlet pipe, connecting pipe, annular shunt pipe, gas outlet and communicating pipe, and the connecting pipe is equipped with the flue gas inlet pipe. Four annular flow dividing pipes are connected to the upper portion of the tail end of the smoke inlet pipe through connecting pipes, air outlets are formed in the lower sides of the annular flow dividing pipes at equal intervals, communicating pipes are connected between the annular flow dividing pipes, and a flow equalizing assembly is installed on the lower middle portion of the interior of the outer shell. The flow equalizing assembly comprises a supporting rod, a rotating motor, a rotating shaft and rotating blades. According to the flue gas desulfurization device of the thermal power plant, the flue gas inlet assembly uniformly exhausts gas, so that the uniformity of gas flow distribution in the outer shell is improved, the gas flow is uniformly distributed, rising flue gas can uniformly flow out through the arrangement of the gas filter screen, and disordered gas flow below the flue gas desulfurization device is converted into uniform rising gas flow.

Description

Technical Field

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

[0002] Thermal power plants are factories that use combustible materials as fuel to produce electricity. During the combustion process in thermal power plants, large amounts of acidic gases, such as sulfur dioxide and nitrogen oxides, are produced. The production of these gases will cause serious pollution to the atmosphere. In order to reduce the pollution of harmful gases to the atmosphere, flue gas desulfurization technology is required. Flue gas desulfurization refers to the removal of sulfur oxides from flue gas or other industrial waste gas.

[0003] During the spray desulfurization process, existing flue gas desulfurization devices usually use side air intake, which causes uneven airflow distribution and turbulent flow field, making it difficult for the sprayed desulfurization liquid to fully contact with the smoke, resulting in poor desulfurization effect.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a flue gas desulfurization device for a thermal power plant is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a flue gas desulfurization device for a thermal power plant to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a flue gas desulfurization device for a thermal power plant, comprising an outer shell, a smoke inlet assembly and a flow equalizing assembly, a smoke inlet assembly is arranged at the lower interior of the outer shell, and the smoke inlet assembly includes a smoke inlet pipe, a connecting pipe, an annular diverter pipe, an air outlet and a connecting pipe, and an annular diverter pipe is connected to the upper end of the smoke inlet pipe through a connecting pipe, and four annular diverter pipes are arranged, air outlets are opened at equal distances on the lower side of the annular diverter pipe, and connecting pipes are connected between the annular diverter pipes, a flow equalizing assembly is installed in the middle and lower interior of the outer shell, and the flow equalizing assembly includes a support rod, a rotating motor, a rotating shaft and rotating blades, a rotating motor is supported by a support rod on one side of the inner wall of the lower interior of the outer shell, and a rotating shaft is arranged on the upper side of the rotating motor, and rotating blades are fixed to the outside of the rotating shaft, and a ventilation filter is installed in the middle and upper interior of the outer shell.

[0007] Furthermore, the annular diverter tubes are arranged in a concentric circle structure, and the vertical center line of the annular diverter tubes coincides with the vertical center line of the outer shell.

[0008] Furthermore, the flow balancing component also includes a scraper, the vertical center line of the rotating shaft coincides with the vertical center line of the outer shell, and the rotating blade array outside the rotating shaft is distributed in three groups, the scraper is fixed at the end of the rotating blade, and the outer side surface of the scraper is in contact with the inner side surface of the outer shell.

[0009] Furthermore, the flow balancing component also includes an extension rod and an anti-blocking brush. The extension rod is fixed to the top of the rotating shaft, and anti-blocking brushes are connected to both sides above the extension rod, and the upper side of the anti-blocking brush is in contact with the lower side of the ventilation filter.

[0010] Furthermore, spray assemblies are provided on both the upper and lower sides of the ventilation filter, and the spray assemblies include spray pipes and spray heads. The spray pipes are distributed at equal distances, and the spray heads are evenly installed below the spray pipes.

[0011] Furthermore, the ventilation filter also includes an outer ring tube and a liquid feeding tube. The outer side of the spraying tube is connected to the outer ring tube, and one side of the outer ring tube is connected to the liquid feeding tube.

[0012] Furthermore, a liquid drain pipe is connected to the lower side of the outer shell, and a smoke guide pipe is connected to the upper side of the outer shell.

[0013] The utility model provides a flue gas desulfurization device for a thermal power plant, which has the following beneficial effects:

[0014] The utility model is provided with a smoke inlet assembly, which facilitates the intake of smoke through the smoke inlet pipe, and facilitates the delivery of smoke into the interior of four connected annular diversion pipes through the connecting pipe and a plurality of connecting pipes, so as to facilitate the uniform discharge of smoke to the interior of the outer shell through the evenly distributed air outlets, thereby improving the uniformity of airflow distribution in the outer shell, making the airflow evenly distributed, and the downward opening of the air outlet can avoid the situation where water enters the interior.

[0015] The utility model is provided with a flow equalizing component, which drives the rotation of the rotating blades through the rotating motor and the rotating shaft, so that the rotating blades can equalize the airflow inside the outer shell. The contact and mixing of the airflow is beneficial to the subsequent desulfurization. At the same time, the scraper can remove dust from the inner wall of the outer shell.

[0016] The utility model is provided with a ventilation filter. The setting of the ventilation filter enables the rising flue gas to flow out evenly, and converts the turbulent airflow below into a uniform rising airflow. The extension rod rotates synchronously with the rotating shaft to drive the anti-blocking brush at its top to rotate, so that the anti-blocking brush can prevent blockage and clean the lower side of the ventilation filter. The spray head on the lower side is convenient for spraying and desulfurizing the rotating uniformly flowing flue gas once, and the spray head on the upper side is convenient for spraying and desulfurizing the flue gas rising at the ventilation filter for a second time, thereby improving the desulfurization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of a flue gas desulfurization device for a thermal power plant according to the present invention;

[0018] Figure 2 This is a schematic diagram of the bottom structure of a smoke inlet assembly of a flue gas desulfurization device in a thermal power plant according to the present invention;

[0019] Figure 3 The utility model is a schematic diagram of the external structure of a flue gas desulfurization device of a thermal power plant.

[0020] In the figure: 1. outer shell; 2. smoke inlet assembly; 201. smoke inlet pipe; 202. connecting pipe; 203. annular diverter pipe; 204. air outlet; 205. connecting pipe; 3. flow equalizing assembly; 301. support rod; 302. rotating motor; 303. rotating shaft; 304. rotating blade; 305. scraper; 306. extension rod; 307. anti-blocking brush; 4. ventilation filter; 5. spray assembly; 501. spray pipe; 502. spray head; 503. outer ring pipe; 504. liquid supply pipe; 6. discharge pipe; 7. smoke guide pipe. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1-Figure 2 As shown, a flue gas desulfurization device of a thermal power plant includes an outer shell 1, a smoke inlet component 2 and a flow equalizing component 3. The smoke inlet component 2 is arranged at the lower part of the outer shell 1, and the smoke inlet component 2 includes a smoke inlet pipe 201, a connecting pipe 202, an annular diverter pipe 203, an air outlet 204 and a connecting pipe 205. The upper end of the smoke inlet pipe 201 is connected to an annular diverter pipe 203 through the connecting pipe 202, and four annular diverter pipes 203 are provided. The lower side of the annular diverter pipe 203 is evenly spaced with an air outlet 204, and the annular diverter pipes 203 are connected with connecting pipes 205. 05, the annular diverter pipes 203 are in a concentric circle structure, and the vertical center line of the annular diverter pipe 203 coincides with the vertical center line of the outer shell 1; the smoke inlet pipe 201 facilitates the intake of smoke, and the connecting pipe 202 and a plurality of connecting pipes 205 facilitate the delivery of smoke to the interior of the four connected annular diverter pipes 203, so that the smoke can be evenly discharged to the interior of the outer shell 1 through the evenly distributed air outlets 204, thereby improving the uniformity of the airflow distribution in the outer shell 1 and making the airflow evenly distributed. The downward opening of the air outlet 204 can avoid the situation where water enters the interior.

[0023] like Figure 1As shown, a flow balancing component 3 is installed in the middle and lower part of the outer shell 1, and the flow balancing component 3 includes a support rod 301, a rotating motor 302, a rotating shaft 303 and a rotating blade 304. The rotating motor 302 is supported by the support rod 301 on one side of the inner wall of the middle and lower part of the inner shell 1, and a rotating shaft 303 is provided on the upper side of the rotating motor 302, and a rotating blade 304 is fixed to the outside of the rotating shaft 303. The flow balancing component 3 also includes a scraper 305, the vertical center line of the rotating shaft 303 coincides with the vertical center line of the outer shell 1, and the rotating blades 304 outside the rotating shaft 303 are arranged in three groups, and the scraper 305 is fixed to the end of the rotating blade 304, and the outer side surface of the scraper 305 is in contact with the inner side surface of the outer shell 1, The flow component 3 also includes an extension rod 306 and an anti-blocking brush 307. The extension rod 306 is fixed to the top of the rotating shaft 303, and the anti-blocking brushes 307 are connected to the upper and lower sides of the extension rod 306, and the upper side of the anti-blocking brush 307 is in contact with the lower side of the ventilation filter 4; the rotating motor 302 and the rotating shaft 303 are used to drive the rotation of the rotating blades 304, so that the rotating blades 304 can evenly distribute the airflow inside the outer shell 1, and the contact and mixing of the airflow is beneficial to the subsequent desulfurization. At the same time, the scraper 305 can remove dust from the inner wall of the outer shell 1, and the extension rod 306 rotates synchronously with the rotating shaft 303 to drive the anti-blocking brush 307 at its top to rotate, so that the anti-blocking brush 307 can prevent blocking and clean the lower side of the ventilation filter 4.

[0024] like Figure 1 and Figure 3 As shown, a ventilation filter 4 is installed in the upper middle part of the interior of the outer shell 1, and a spray assembly 5 is provided on both the upper and lower sides of the ventilation filter 4, and the spray assembly 5 includes a spray pipe 501 and a spray head 502. The spray pipes 501 are equidistantly distributed, and the spray heads 502 are evenly installed below the spray pipes 501. The ventilation filter 4 also includes an outer ring pipe 503 and a liquid supply pipe 504. The outer side of the spray pipe 501 is connected to the outer ring pipe 503, and one side of the outer ring pipe 503 is connected to the liquid supply pipe 504. The lower side of the outer shell 1 is connected to the drain pipe 6, and the outer shell 1 A smoke guide pipe 7 is connected to the top; the arrangement of the ventilation filter 4 allows the rising flue gas to flow out evenly, converting the turbulent airflow below into a uniform rising airflow, and the desulfurization liquid is conveniently delivered to the interior of the outer ring tube 503 through the liquid delivery pipe 504, and then enters the interior of the equidistantly distributed spraying pipe 501 for spraying through the spray head 502. The lower spray head 502 facilitates the primary spraying and desulfurization of the rotating uniform flow of flue gas, and the upper spray head 502 facilitates the secondary spraying and desulfurization of the flue gas rising from the ventilation filter 4, thereby improving the desulfurization effect.

[0025] In summary, if Figure 1-Figure 3As shown, the flue gas desulfurization device of the thermal power plant, when in use, can first introduce flue gas through the smoke inlet pipe 201, then through the connecting pipe 202 and a plurality of connecting pipes 205, the flue gas can be sent to the inside of four connected annular diversion pipes 203, and finally through the evenly distributed air outlets 204 to the inside of the outer shell 1, and then the rotating motor 302 and the rotating shaft 303 can drive the rotation of the rotating blades 304, so that the rotating blades 304 can evenly flow the air inside the outer shell 1, and then the desulfurization liquid is sent into the inside of the outer ring pipe 503 through the liquid feeding pipe 504, and then enters the inside of the spray pipe 501 distributed at equal distances, so that the rotating and evenly flowing flue gas is sprayed and desulfurized once through the spray head 502 on the lower side;

[0026] During this process, the scraper 305 can remove dust from the inner wall of the outer shell 1, and then the rising flue gas can flow out evenly through the ventilation filter 4, thereby converting the turbulent airflow below into a uniform rising airflow. At this time, the extension rod 306 rotates synchronously with the rotating shaft 303 to drive the anti-blocking brush 307 at its top to rotate, so that the anti-blocking brush 307 can prevent blocking and clean the lower side of the ventilation filter 4, and then the upper side spray head 502 can perform secondary spraying and desulfurization on the flue gas rising from the ventilation filter 4, and then the used desulfurization liquid can be discharged through the drain pipe 6 to improve the desulfurization effect, and finally the flue gas after spraying and desulfurization is discharged through the smoke guide pipe 7, thus completing the use process of the flue gas desulfurization device of the thermal power plant.

[0027] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A flue gas desulfurization device for a thermal power plant, comprising an outer shell (1), a smoke inlet component (2) and a flow equalizing component (3), characterized in that: A smoke inlet assembly (2) is provided at the lower portion of the outer shell (1), and the smoke inlet assembly (2) comprises a smoke inlet pipe (201), a connecting pipe (202), an annular diverter pipe (203), an air outlet (204) and a connecting pipe (205), and an annular diverter pipe (203) is connected to the upper portion of the end of the smoke inlet pipe (201) via the connecting pipe (202), and four annular diverter pipes (203) are provided, and air outlets (204) are uniformly spaced on the lower side of the annular diverter pipes (203), and connecting pipes (205) are connected between the annular diverter pipes (203). ), a flow balancing assembly (3) is installed in the middle and lower part of the interior of the outer shell (1), and the flow balancing assembly (3) comprises a support rod (301), a rotating motor (302), a rotating shaft (303) and a rotating blade (304); a rotating motor (302) is supported on one side of the inner wall of the middle and lower part of the interior of the outer shell (1) through the support rod (301), a rotating shaft (303) is provided on the upper side of the rotating motor (302), and a rotating blade (304) is fixed to the outside of the rotating shaft (303); a ventilation filter (4) is installed in the middle and upper part of the interior of the outer shell (1).

2. A flue gas desulfurization device for a thermal power plant according to claim 1, characterized in that: The annular diverter tubes (203) are arranged in a concentric circle structure, and the vertical center line of the annular diverter tubes (203) coincides with the vertical center line of the outer shell (1).

3. The flue gas desulfurization device of a thermal power plant according to claim 1, characterized in that: The flow balancing component (3) further includes a scraper (305), the vertical center line of the rotating shaft (303) coincides with the vertical center line of the outer shell (1), and the rotating blades (304) outside the rotating shaft (303) are arranged in an array of three groups, the scraper (305) is fixed to the end of the rotating blade (304), and the outer side surface of the scraper (305) is in contact with the inner side surface of the outer shell (1).

4. The flue gas desulfurization device for a thermal power plant according to claim 1, characterized in that: The flow balancing assembly (3) further comprises an extension rod (306) and an anti-blocking brush (307), wherein the extension rod (306) is fixed to the top of the rotating shaft (303), and the anti-blocking brushes (307) are connected to both sides above the extension rod (306), and the upper side of the anti-blocking brush (307) is in contact with the lower side of the ventilation filter (4).

5. The flue gas desulfurization device for a thermal power plant according to claim 1, characterized in that: Spray assemblies (5) are provided on both the upper and lower sides of the ventilation filter (4), and the spray assembly (5) comprises a spray pipe (501) and a spray head (502), the spray pipes (501) are distributed at equal distances, and the spray heads (502) are evenly installed below the spray pipes (501).

6. The flue gas desulfurization device for a thermal power plant according to claim 5, characterized in that: The ventilation filter (4) further comprises an outer ring tube (503) and a liquid delivery tube (504); the outer side of the spraying tube (501) is connected to the outer ring tube (503), and one side of the outer ring tube (503) is connected to the liquid delivery tube (504).

7. The flue gas desulfurization device for a thermal power plant according to claim 6, characterized in that: A liquid drain pipe (6) is connected to a lower side of the outer shell (1), and a smoke guide pipe (7) is connected to an upper side of the outer shell (1).

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