Flue gas dust removal mechanism for denitration treatment of boiler in power plant

Abstract

The utility model discloses a flue gas dust removal mechanism for denitration treatment of a boiler in a power plant, which relates to the technical field of denitration treatment of boilers and comprises a dust removal box. The dust removal device further comprises mounting bins which are arranged on the two sides of the dust removal box and communicate with the dust removal box, filter plates are arranged in the dust removal box, the number of the filter plates is two, the other filter plate is located in one of the mounting bins, a filter screen is arranged on the surface of each filter plate, and a second sealing plate is arranged on the outer side of each filter plate. A first sealing plate is arranged between the two filtering plates, a sliding groove is formed in the surface of the upper end of the mounting bin, the two filtering plates can be alternately used, and when one filtering plate is used, the other filtering plate moves into the mounting bin to be cleaned, so that recycling is facilitated, manual cleaning and replacement are not needed, and the working efficiency is improved. Labor cost is saved, time and labor are saved, and the service life of the filter screen is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler denitration processing technical field, concretely is a flue gas dust removal mechanism for power plant boiler denitration processing. BACKGROUND

[0002] The power plant boiler denitration system refers to the treatment system for reducing the emission of nitrogen oxides in flue gas to prevent excessive nitrogen oxides (NOx) produced after coal combustion in the boiler from polluting the environment, and the application of the power plant boiler denitration system is of great significance for reducing air pollution and protecting the ecological environment. By reducing the emission of NOx, the occurrence of environmental problems such as acid rain and photochemical smog can be reduced, and the emission of greenhouse gases can also be reduced to cope with global climate change.

[0003] In the denitration process of the power plant, the flue gas needs to be preliminarily filtered separately. Since the flue gas often contains a large amount of dust, it not only pollutes the environment, but also negatively affects the operating efficiency and service life of the denitration equipment. The existing dust removal mechanism only sets a single filter core to intercept the dust in the flue gas, which will cause the surface of the filter core to be blocked after a long time of operation, and the position where the dust removal mechanism is installed is often not convenient for replacing the filter core. Therefore, we propose a flue gas dust removal mechanism for power plant boiler denitration processing to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a flue gas dust removal mechanism for power plant boiler denitration processing to solve the problem that the existing dust removal mechanism only sets a single filter core to intercept the dust in the flue gas, which will cause the surface of the filter core to be blocked after a long time of operation, and the position where the dust removal mechanism is installed is often not convenient for replacing the filter core.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flue gas dust removal mechanism for power plant boiler denitration processing, comprising a dust removal box;

[0006] Further comprising:

[0007] The installation bin is arranged on both sides of the dust removal box and communicates between the installation bin and the dust removal box. The inside of the dust removal box is provided with a filter plate, and two filter plates are arranged, with the other filter plate located inside one of the installation bins. The surface of the filter plate is provided with a filter screen, the outside of the filter plate is provided with a second closing plate, and a first closing plate is arranged between the two filter plates.

[0008] Preferably, the upper end surface of the installation bin is provided with a sliding groove, the upper end of the installation bin is provided with a sliding plate, the upper end of the second closing plate is provided with a connecting block, the connecting block is slidingly engaged in the inside of the sliding groove, and the upper end of the connecting block is connected with the sliding plate.

[0009] Preferably, the upper end of the installation bin is provided with a fixed frame, a screw rod is arranged between the two fixed frames, and the screw rod is threadedly connected with the sliding plate, one end of the screw rod is connected with a motor, and the motor is installed on the outside of one of the fixed frames.

[0010] Preferably, the dust removal box is provided with a water inlet pipe at the top, the bottom of the water inlet pipe is connected with a water distribution box, the water distribution box is fixed on the top of the dust removal box through a support, connecting pipes are symmetrically arranged on the two sides of the water distribution box, the other ends of the connecting pipes are located at the rear of the installation bin, flow distribution pipes are symmetrically connected on the two sides of the other ends of the connecting pipes, the other ends of the flow distribution pipes are connected with the rear end of the installation bin, nozzles are arranged on the rear side of the inner wall of the installation bin, the other ends of the flow distribution pipes are connected with the nozzles, and a water outlet pipe is arranged at the bottom of the installation bin.

[0011] Preferably, the dust removal box is provided with a water inlet pipe at the top, the bottom of the water inlet pipe is connected with a water distribution box, the water distribution box is fixed on the top of the dust removal box through a support, connecting pipes are symmetrically arranged on the two sides of the water distribution box, the other ends of the connecting pipes are located at the rear of the installation bin, flow distribution pipes are symmetrically connected on the two sides of the other ends of the connecting pipes, the other ends of the flow distribution pipes are connected with the rear end of the installation bin, nozzles are arranged on the rear side of the inner wall of the installation bin, the other ends of the flow distribution pipes are connected with the nozzles, and a water outlet pipe is arranged at the bottom of the installation bin.

[0012] Preferably, the outer side of the installation bin is provided with a through groove.

[0013] Compared with the prior art, the dust removal box of the utility model has the advantages that:

[0014] 1. The dust removal box is installed in the flue gas pipeline of a boiler, installation bins are arranged at the two ends of the dust removal box, filter plates are arranged in the dust removal box, another filter plate is arranged in one of the installation bins, the two filter plates are connected through a sealing plate, a screw rod is arranged above the installation bin, the screw rod drives the two filter plates to move, the filter plates in the dust removal box intercept dust in the flue gas to a certain extent, the two filter plates are driven to slide through the screw rod, the older filter plate is moved into the installation bin, the newer filter plate is moved into the dust removal box for filtering, water inlet and outlet pipes are connected with the installation bin, dust on the filter screen is separated from the water flow and discharged from the installation bin through spraying of cleaning liquid, and therefore the two filter plates can be recycled.

[0015] 2. The bottom of the water inlet pipe is provided with a water distribution box, two connecting pipes are respectively arranged at the two ends of the water distribution box, a rotating rod is arranged at the bottom of the water distribution box, and the other end of the rotating rod is provided with a turbine which is in meshing transmission connection with a screw rod, so that the water distribution block in the water distribution box rotates, the water distribution block can be adjusted to distribute the water flow between the water inlet pipe and the water distribution box, the water flow can enter the corresponding installation bin through the connecting pipe under the adjustment of the water distribution block to clean the filter plate in the bin, when the screw rod drives a filter plate to move to the installation bin, the water distribution block is adjusted to the appropriate position under the meshing transmission to block the corresponding connecting pipe on the two sides of the water distribution box, so that the water flow can only enter the installation bin with the filter plate, thereby preventing the waste of water. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a whole structure top view of the utility model;

[0018] Figure 3 It is a whole structure front view of the utility model;

[0019] Figure 4 It is a water distribution box internal section view of the utility model;

[0020] In the drawing: 1, dust removal box; 2, installation bin; 3, filter plate; 4, first closed plate; 5, second closed plate; 6, filter screen; 7, connecting pipe; 8, distribution pipe; 9, nozzle; 10, water inlet pipe; 11, water outlet pipe; 12, rotating rod; 13, screw rod; 14, turbine; 15, water distribution box; 16, water distribution block; 17, fixed frame; 18, motor; 19, sliding plate; 20, sliding groove; 21, connecting block; 22, through groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Please refer to Figures 1-4 The utility model provides an embodiment: a flue dust removal mechanism for boiler descaling treatment of power plant, including dust removal box 1;

[0023] Still include:

[0024] The installation bin 2 is arranged on both sides of the dust removal box 1, and is communicated with the dust removal box 1, the inside of the dust removal box 1 is provided with the filter plate 3, the filter plate 3 is provided with two, and the other filter plate 3 is located in the inside of one of the installation bin 2, the surface of the filter plate 3 is provided with the filter screen 6, the outside of the filter plate 3 is provided with the second closing plate 5, the first closing plate 4 is arranged between the two filter plates 3, the upper end surface of the installation bin 2 is provided with the sliding groove 20, the upper end of the installation bin 2 is provided with the sliding plate 19, the upper end of the second closing plate 5 is provided with the connecting block 21, the connecting block 21 is slidingly clamped in the inside of the sliding groove 20, and the upper end of the connecting block 21 is connected with the sliding plate 19.

[0025] The two filter plates 3 can be used alternately, when the filter plate 3 located in the inside of the dust removal box 1 needs to be cleaned, the filter plate 3 in the inside of the dust removal box 1 is moved to the inside of the installation bin 2 through the sliding plate 19, and the other filter plate 3 is replaced from the installation bin 2 on the other side to the dust removal box 1, so that the recycling is facilitated, and the gap between the installation bin 2 and the dust removal box 1 is closed by the closing plates arranged between the two filter plates 3 and at both ends, so that the flue gas is prevented from entering the installation bin 2.

[0026] Please refer to Figures 1-3 The upper end outside of the installation bin 2 is provided with the fixing frame 17, the screw rod 13 is arranged between the two fixing frames 17, and the screw rod 13 is threadedly connected with the sliding plate 19, one end of the screw rod 13 is connected with the motor 18, and the motor 18 is installed on the outside of one of the fixing frames 17, and the two filter plates 3 are driven to move between the installation bin 2 and the dust removal box 1 through the screw rod 13.

[0027] Please refer to Figures 1-2 The water inlet pipe 10 is installed above the dust removal box 1, the bottom of the water inlet pipe 10 is connected with the water distribution box 15, the water distribution box 15 is fixed on the upper side of the dust removal box 1 through the support, the connecting pipe 7 is symmetrically arranged on both sides of the water distribution box 15, and the other end of the connecting pipe 7 is located behind the installation bin 2, the flow distribution pipe 8 is symmetrically connected on both sides of the other end of the connecting pipe 7, the other end of the flow distribution pipe 8 is connected with the rear end of the installation bin 2, the nozzle 9 is arranged on the rear side of the inner wall of the installation bin 2, the other end of the flow distribution pipe 8 is connected with the nozzle 9, and the water outlet pipe 11 is arranged at the bottom of the installation bin 2, so that the dust on the surface of the filter plate 3 is taken away by the water flow.

[0028] Please refer to Figure 4, the upper portion of the dust removal box 1 is provided with a turbine 14, the turbine 14 is in meshing transmission connection with the screw rod 13, the upper end of the turbine 14 is provided with a rotating rod 12, the rotating rod 12 extends into the inside of a water distribution box 15, the other end of the rotating rod 12 is provided with a water distribution block 16, the water distribution block 16 is located in the inside of the water distribution box 15, and the water distribution block 16 is provided in a semicircular structure, when the screw rod 13 drives a filter plate 3 to move into the installation bin 2, the water distribution block 16 is adjusted to a proper position to adjust the corresponding connecting pipe 7 on the two sides of the water distribution box 15 under the action of meshing transmission, so that the water flow can only enter the installation bin 2 with the filter plate 3, thereby preventing the waste of water.

[0029] Please refer to Figure 1 , the outer side of the installation bin 2 is provided with a through slot 22, which facilitates the discharge of the water vapor on the surface of the wet filter plate 3 from the through slot 22.

[0030] Working principle: after the filter plate 3 in the dust removal box 1 intercepts a certain amount of dust in the flue gas, the two filter plates 3 are driven to slide by the screw rod 13, so that the older filter plate 3 moves into the installation bin 2, and the newer filter plate 3 moves into the dust removal box 1 to continue the filtering work, when the filter plate 3 is driven by the screw rod 13 to move into the installation bin 2, the water distribution block 16 is adjusted to a proper position to block the connecting pipe 7 on one side of the water distribution box 15 under the action of meshing transmission through the rotation of the turbine 14, so that the water flow can only enter the installation bin 2 with the filter plate 3, thereby preventing the waste of water, the water enters the installation bin 2 through the nozzle 9 to spray the surface of the filter screen 6, the dust is separated from the surface of the filter screen 6, and is discharged from the water outlet pipe 11.

[0031] It is obvious for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A flue gas dust removal mechanism for power plant boiler deactivation treatment, comprising a dust removal box (1); characterized in that Further comprising: An installation bin (2) is arranged on both sides of the dust removal box (1), and a communication is formed between the installation bin (2) and the dust removal box (1), the inside of the dust removal box (1) is provided with filter plates (3), the filter plates (3) are provided with two, and the other filter plate (3) is located in the inside of one of the installation bins (2), the surface of the filter plate (3) is provided with a filter screen (6), the outside of the filter plate (3) is provided with a second closing plate (5), and a first closing plate (4) is arranged between the two filter plates (3).

2. A flue gas dedusting mechanism for use in the deashing process of a boiler of a power plant according to claim 1, characterized in that: The upper end surface of the installation bin (2) is provided with a sliding groove (20), the upper end of the installation bin (2) is provided with a sliding plate (19), the upper end of the second closing plate (5) is provided with a connecting block (21), the connecting block (21) is slidingly clamped in the inside of the sliding groove (20), and the upper end of the connecting block (21) is connected with the sliding plate (19).

3. A flue gas dedusting mechanism for use in the deashing process of a boiler of a power plant according to claim 1, characterized in that: The outside of the upper end of the installation bin (2) is provided with a fixing frame (17), a screw rod (13) is arranged between the two fixing frames (17), the screw rod (13) is threadedly connected with the sliding plate (19), one end of the screw rod (13) is connected with a motor (18), and the motor (18) is installed on the outside of one of the fixing frames (17).

4. A flue gas dedusting mechanism for use in the deashing process of a boiler of a power plant according to claim 1, characterized in that: The upper end of the dust removal box (1) is provided with a water inlet pipe (10), the bottom of the water inlet pipe (10) is connected with a water distribution box (15), the water distribution box (15) is fixed on the upper end of the dust removal box (1) through a support, the two sides of the water distribution box (15) are symmetrically provided with connecting pipes (7), one end of the connecting pipes (7) is located behind the installation bin (2), the other end of the connecting pipes (7) is symmetrically connected with water distribution pipes (8), one end of the water distribution pipes (8) is connected with the rear end of the installation bin (2), the rear side of the inner wall of the installation bin (2) is provided with a nozzle (9), one end of the water distribution pipes (8) is connected with the nozzle (9), and the bottom of the installation bin (2) is provided with a water outlet pipe (11).

5. A flue gas dedusting mechanism for a boiler of a power plant for use in a descaling process according to claim 1, characterized in that: The upper end of the dust removal box (1) is provided with a water turbine (14), and the water turbine (14) is in meshing transmission connection with the screw rod (13), the upper end of the water turbine (14) is provided with a rotating rod (12), and the rotating rod (12) extends into the inside of the water distribution box (15), the other end of the rotating rod (12) is provided with a water distribution block (16), and the water distribution block (16) is located in the inside of the water distribution box (15), and the water distribution block (16) is provided in a semicircular structure.

6. A flue gas dedusting mechanism for a power plant boiler de-NOx process according to claim 1, characterized in that: The outside of the upper end of the installation bin (2) is provided with a through groove (22).

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