Urea solution pretreatment device for denitration of furnace flue gas

Abstract

The utility model relates to the field of boiler flue gas denitration, and discloses a urea solution pretreatment device for boiler flue gas denitration, which comprises a processing tank, the top of the processing tank is connected with a solution tank, the bottom of the solution tank is fixedly connected with a one-way valve, and the bottom of the one-way valve is fixedly connected with a water pipe. Connecting pipes are fixedly connected to the four corners of the bottom end of the water pipe correspondingly, connecting columns are rotatably connected to the outer portions of the connecting pipes, a plurality of water spraying heads are fixedly connected to the bottom of each connecting column, rotating assemblies are fixedly connected to the interiors of the connecting columns, and the rotating assemblies can drive the water spraying heads to rotate. A telescopic assembly is arranged on the right side of the processing tank and can assist in exhausting. According to the waste treatment device, waste is sprayed into the processing tank through the water spraying head to control the use amount, and meanwhile, the treatment box and the discharge pipe are quickly mounted, so that filtered waste is conveniently treated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of boiler flue gas denitration, especially to a urea solution pretreatment device for flue gas denitration. BACKGROUND

[0002] The urea hydrolysis denitration device for flue gas is a kind of denitration equipment for reducing nitrogen oxides in industrial boiler and gas turbine emissions.This device uses urea as reducing agent, and converts nitrogen oxides into nitrogen and water through catalytic reaction, so as to achieve the purpose of denitration.

[0003] In the prior art, part of the denitration device needs to cooperate with urea for reaction during processing, but directly pouring urea cannot control the dosage, and cannot make it fully mixed and reacted, and the undissolved impurities of urea cannot be separated in time, which affects the use effect, therefore a urea solution pretreatment device for flue gas denitration is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a urea solution pretreatment device for flue gas denitration, which aims to improve the problems in the prior art that directly pouring urea cannot control the dosage, and cannot make it fully mixed and reacted, and the undissolved impurities of urea cannot be separated in time, which affects the use effect.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A urea solution pretreatment device for urea denitration of flue gas, comprising a processing tank, a solution tank is connected to the top of the processing tank, a one-way valve is fixedly connected to the bottom of the solution tank, a water pipe is fixedly connected to the bottom of the one-way valve, a connecting pipe is fixedly connected to the bottom of the water pipe at four corners, a connecting column is rotatably connected to the outside of the connecting pipe, a plurality of water spray heads are fixedly connected to the bottom of the connecting column, a rotating assembly is fixedly connected to the inside of the connecting column, the rotating assembly can drive the water spray heads to rotate, a telescopic assembly is arranged on the right side of the processing tank, and the telescopic assembly can assist in exhausting;

[0007] Further description of the above technical scheme:

[0008] The rotating assembly comprises a connecting ring, the connecting ring is fixedly connected to the bottom of the connecting pipe in the middle, a fixing frame is fixedly connected to the inside of the connecting column, and a plurality of page sheets are fixedly connected to the bottom of the fixing frame;

[0009] Further description of the above technical scheme:

[0010] The connecting ring is rotatably connected to the inside of the connecting column, and the page sheet is rotatably connected to the inside of the connecting column.

[0011] As a further description of the above technical solutions:

[0012] The outer right side of the processing tank is fixedly connected with a discharge pipe, the outer side of the discharge pipe is slidably connected with a treatment box, and the inner upper and lower sides of the treatment box are both provided with movable grooves.

[0013] As a further description of the above technical solutions:

[0014] The telescopic assembly comprises a rotating plate, the middle part of the rotating plate is rotationally connected in the inner part of the movable groove, the left side bottom of the rotating plate is fixedly connected with an abutting rod, the outer side of the abutting rod is sleeved with a spring one, and the bottom of the abutting rod is fixedly connected with an abutting plate.

[0015] As a further description of the above technical solutions:

[0016] One end of the spring one is fixedly connected to the outer side of the abutting rod, the other end of the spring one is fixedly connected to one side of the inner wall of the movable groove, and the inner part of the treatment box is fixedly connected with a filter core.

[0017] As a further description of the above technical solutions:

[0018] One side of the inner wall of the movable groove is fixedly connected with a spring two, the bottom of the spring two is fixedly connected with a pressing block, the outer left side of the pressing block is fixedly connected with a push plate, and the outer side of the push plate is in contact with the right outer side of the rotating plate.

[0019] As a further description of the above technical solutions:

[0020] The outer left side of the processing tank is fixedly connected with a feeding pipe, the inner part of the processing tank is fixedly connected with a filter plate, and the bottom end of the processing tank is fixedly connected with supporting legs.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1、 in the utility model, through starting check valve, under the drive of check valve, the solution in the inside of urea solution tank is extracted, then enters the inside of water pipe, the solution passes through the inside of the connecting pipe and enters the inside water flow of the connecting column, and the page piece is rotated, so as to drive the connecting column to rotate, so as to spray into the inside of processing tank through the water spraying head, the dosage can be controlled while ensuring sufficient mixing.

[0023] 2. In this utility model, by inserting the discharge pipe into the interior of the processing box, the discharge pipe first contacts the outside of the extrusion block and compresses the spring two upward. As the extrusion block moves, the push plate pushes the rotating plate to rotate. At this time, the other end of the rotating plate presses the abutment rod downward. The abutment rod moves downward under force, making the abutment plate contact the outside of the discharge pipe. At the same time, the spring one will generate a reaction force on the abutment rod, making the contact between the abutment plate and the outside of the discharge pipe tighter. This allows the processing box and the discharge pipe to be installed quickly, which is convenient for processing filtered waste. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a urea solution pretreatment device for urea denitrification of flue gas proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the filter plate of a urea solution pretreatment device for denitrification of flue gas proposed in this utility model.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the feed pipe of a urea solution pretreatment device for denitrification of furnace flue gas proposed in this utility model;

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Processing tank; 2. Solution tank; 3. Check valve; 4. Water pipe; 5. Connecting pipe; 6. Connecting column; 7. Connecting ring; 8. Fixing frame; 9. Blade; 10. Spray head; 11. Discharge pipe; 12. Processing box; 13. Movable trough; 14. Rotating plate; 15. Support rod; 16. Spring 1; 17. Support plate; 18. Spring 2; 19. Extrusion block; 20. Push plate; 21. Filter element; 22. Feed pipe; 23. Filter plate. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1 to 3The utility model provides an embodiment: a kind of urea solution pretreatment device for flue gas denitrification, including processing tank 1, processing tank 1 is used to load the waste gas and solution of being handled.The bottom end four corners of processing tank 1 are fixedly connected with support leg, support leg is kept stable, the top of processing tank 1 is connected with solution tank 2, solution tank 2 is located at the top of processing tank 1, for storing the solution required for processing waste gas, the bottom of solution tank 2 is fixedly connected with one-way valve 3, one-way valve 3 is fixedly connected at the bottom of solution tank 2, for controlling the flow direction of solution, the bottom of one-way valve 3 is fixedly connected with water pipe 4, water pipe 4 extends from the bottom of one-way valve 3, solution is delivered into adapter pipe 5, the bottom end four corners of water pipe 4 are fixedly connected with adapter pipe 5, adapter pipe 5 is fixedly connected at the bottom end four corners of water pipe 4, adapter pipe 5 is rotatably connected with adapter column 6 outside, for guiding solution into adapter column 6, adapter column 6 is rotatably connected outside adapter pipe 5.

[0033] Inside fixedly connected with rotating assembly, can drive water jet head 10 to rotate, the bottom of adapter column 6 is fixedly connected with a plurality of water jet head 10, water jet head 10 is fixedly connected at the bottom of adapter column 6, is sprayed by rotating, make solution evenly spray to the inside of processing tank 1, the inside of adapter column 6 is fixedly connected with rotating assembly, rotating assembly can drive water jet head 10 to rotate, rotating assembly includes adapter ring 7, the middle part of adapter ring 7 is fixedly connected at the bottom of adapter pipe 5, adapter ring 7 can limit adapter pipe 5, avoid and adapter pipe 5 disengagement, adapter ring 7 is rotatably connected in the inside of adapter column 6, the inside of adapter column 6 is fixedly connected with fixed frame 8, the bottom of fixed frame 8 is fixedly connected with a plurality of pages 9, page 9 is fixedly connected at the bottom of fixed frame 8, rotatably connected in the inside of adapter column 6, force rotates and drives adapter column 6 to rotate, page 9 is rotatably connected in the inside of adapter column 6.

[0034] Refer to Figures 4 to 5 The outside right side of processing tank 1 is fixedly connected with discharge pipe 11, discharge pipe 11 is fixedly connected at the outside right side of processing tank 1, for discharging after being handled gas, the outside of discharge pipe 11 is slidably connected with treatment tank 12, treatment tank 12 is slidably connected at the outside of discharge pipe 11, and the inside upper and lower sides are both provided with movable groove 13, for assisting exhaust, the inside upper and lower sides of treatment tank 12 are both provided with movable groove 13, movable groove 13 is provided in the inside upper and lower sides of treatment tank 12, and the middle part of rotating plate 14 is rotatably connected in it, the right side of processing tank 1 is provided with telescopic component, and telescopic component can assist exhaust.

[0035] The telescopic assembly includes a rotating plate 14, which is rotatably connected to the inside of the movable groove 13 in the middle. A stop rod 15 is fixedly connected to the bottom left side, and a stop plate 17 is fixedly connected to the bottom. A spring 16 is sleeved on the outside of the stop rod 15, with one end fixedly connected to the outside of the stop plate 17 and the other end fixedly connected to the inner wall of the movable groove 13. A spring 16 is sleeved on the outside of the stop rod 15, and a stop plate 17 is fixedly connected to the bottom of the stop rod 15. The stop plate 17 contacts the outside of the discharge pipe 11, which can fix the processing box 12 to the outside of the discharge pipe 11. One end of the spring 16 is fixedly connected to the outside of the stop rod 15, and the other end of the spring 16 is fixedly connected to the inner wall of the movable groove 13. The spring 16 generates a reaction force on the stop rod 15.

[0036] A filter element 21 is fixedly connected inside the processing chamber 12. The filter element 21 is used to filter the gas after the reaction. A spring 18 is fixedly connected to one side of the inner wall of the movable tank 13. A pressing block 19 is fixedly connected to the bottom of the spring 18. A push plate 20 is fixedly connected to the left side of the pressing block 19, and its exterior contacts the right exterior of the rotating plate 14. A push plate 20 is fixedly connected to the left side of the pressing block 19. The push plate 20 is in contact with the outer right side of the rotating plate 14. As the extrusion block 19 moves, it pushes the rotating plate 14 upward to rotate. The outer side of the push plate 20 is in contact with the outer right side of the rotating plate 14. A feed pipe 22 is fixedly connected to the outer left side of the processing tank 1. The feed pipe 22 is fixedly connected to the outer left side of the processing tank 1 and is used to introduce high-temperature gas into the interior of the processing tank 1. A filter plate 23 is fixedly connected to the interior of the processing tank 1 and is used to filter the gas after the reaction.

[0037] Working principle: First, place the urea solution processing tank 1 in a suitable position and connect the feed pipe 22 to the high-temperature gas pipeline. The high-temperature gas enters the interior of the processing tank 1. Then, start the one-way valve 3. Driven by the one-way valve 3, the solution inside the solution tank 2 is drawn. After the solution enters the interior of the water pipe 4, it enters the interior of the connecting column 6 through the connecting pipe 5. After the solution enters the interior of the connecting column 6, the blade 9 will be rotated by force, thereby driving the connecting column 6 to rotate outside the connecting pipe 5. The solution is sprayed evenly into the interior of the processing tank 1 through the rotating water nozzle 10, so that it can fully react with the high-temperature gas.

[0038] The discharge pipe 11 is put into the inside of the processing box 12, and the inside extruding block 19 is extruded with the movement of the discharge pipe 11, the extruding block 19 is extruded upward to the spring two 18, the push plate 20 is pushed upward to rotate the rotating plate 14 with the movement of the extruding block 19, at this time, the other end of the rotating plate 14 rotates downward to extrude the resisting plate 17 to contact with the outside of the discharge pipe 11, at the same time, the spring one 16 is compressed, the spring one 16 generates the reaction force to the resisting rod 15 after being compressed, the resisting plate 17 is contacted more closely with the outside of the discharge pipe 11, the processing box 12 can be fixed on the outside of the discharge pipe 11, the gas after reaction is filtered through the filter plate 23, is discharged through the discharge pipe 11, and is filtered again through the filter core 21, so that the harm in the exhaust gas is reduced.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have described, and do not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A urea solution pretreatment device for flue gas denitration, comprising a processing tank (1), characterized in that: The top of the processing tank (1) is connected with a solution tank (2), the bottom of the solution tank (2) is fixedly connected with a one-way valve (3), the bottom of the one-way valve (3) is fixedly connected with a water pipe (4), the bottom end of the water pipe (4) is fixedly connected with a connecting pipe (5) at four corners, the outer part of the connecting pipe (5) is rotatably connected with a connecting column (6), the bottom of the connecting column (6) is fixedly connected with a plurality of water spraying heads (10), the inner part of the connecting column (6) is fixedly connected with a rotating assembly, the rotating assembly can drive the water spraying heads (10) to rotate, and the right side of the processing tank (1) is provided with a telescopic assembly, and the telescopic assembly can assist in exhausting.

2. The urea solution pre-treatment device for flue gas denitration according to claim 1, characterized in that: The rotating assembly comprises a connecting ring (7), the middle part of the connecting ring (7) is fixedly connected to the bottom of the connecting pipe (5), the inner part of the connecting column (6) is fixedly connected with a fixing frame (8), and the bottom of the fixing frame (8) is fixedly connected with a plurality of leaf pieces (9).

3. The urea solution pre-treatment device for flue gas denitration of claim 2, characterized in that: The outer part of the connecting ring (7) is rotatably connected to the inner part of the connecting column (6), and the outer part of the leaf piece (9) is rotatably connected to the inner part of the connecting column (6).

4. The urea solution pre-treatment device for flue gas denitration of claim 1, characterized in that: The outer right side of the processing tank (1) is fixedly connected with a discharge pipe (11), the outer part of the discharge pipe (11) is slidably connected with a treatment tank (12), and the inner part of the treatment tank (12) is provided with a movable groove (13) on the upper side and the lower side.

5. The urea solution pre-treatment device for flue gas denitration of claim 4, characterized in that: The telescopic assembly comprises a rotating plate (14), the middle part of the rotating plate (14) is rotatably connected to the inner part of the movable groove (13), the left bottom of the rotating plate (14) is fixedly connected with an abutting rod (15), the outer part of the abutting rod (15) is sleeved with a spring (16), and the bottom of the abutting rod (15) is fixedly connected with an abutting plate (17).

6. The urea solution pre-treatment device for flue gas denitration of claim 5, characterized in that: One end of the spring (16) is fixedly connected to the outer part of the abutting rod (15), the other end of the spring (16) is fixedly connected to one side of the inner wall of the movable groove (13), and the inner part of the treatment tank (12) is fixedly connected with a filter core (21).

7. The urea solution pre-treatment device for flue gas denitration of claim 6, characterized in that: One side of the inner wall of the movable groove (13) is fixedly connected with a spring (18), the bottom of the spring (18) is fixedly connected with a pressing block (19), the outer left side of the pressing block (19) is fixedly connected with a pushing plate (20), and the outer part of the pushing plate (20) is in contact with the outer right side of the rotating plate (14).

8. The urea solution pre-treatment device for flue gas denitration of claim 1, characterized in that: The outer left side of the processing tank (1) is fixedly connected with a feeding pipe (22), the inner part of the processing tank (1) is fixedly connected with a filter plate (23), and the bottom end of the processing tank (1) is fixedly connected with supporting legs at four corners.

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