Desulfurization equipment for flue gas emission of industrial coal-fired boiler

Abstract

The utility model discloses desulfurization equipment for flue gas emission of an industrial coal-fired boiler, which belongs to the technical field of flue gas emission of boilers and comprises a desulfurization cylinder, two gas distribution ring pipes are fixedly sleeved on the inner wall of the desulfurization cylinder, and a U-shaped pipe is fixedly connected between the two gas distribution ring pipes. One end of the U-shaped pipe extends out of the desulfurization cylinder and is fixedly connected with an air inlet pipe, and a one-way valve is fixedly mounted in the middle of the air inlet pipe. According to the desulfurization device disclosed by the utility model, the gas distribution ring pipe, the gas spraying holes, the U-shaped pipe, the gas inlet pipe and the one-way valve are matched for use, flue gas is guided into the inner cavity of the gas distribution ring pipe through the gas inlet pipe and the U-shaped pipe, and the flue gas in the gas distribution ring pipe is sprayed into a desulfurization solution in the inner cavity of the desulfurization cylinder from the gas spraying holes, so that the flue gas is guided into the desulfurization solution in a dispersed manner; the flue gas and the desulfurization solution are fully mixed, so that the flue gas desulfurization effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas emission, and more specifically, to a desulfurization device for flue gas emission of an industrial coal-fired boiler. Background Art

[0002] A coal-fired boiler is a boiler that uses coal as fuel. It refers to a thermal power device that releases heat by burning coal in the furnace and heats the heat medium water or other organic heat carriers to a certain temperature. Flue gas is generated during the coal combustion process. The flue gas contains sulfides, and direct emission will have an impact on the environment. The flue gas needs to be desulfurized.

[0003] After searching, the utility model patent with announcement number CN212757990U discloses an environmentally friendly desulfurization equipment for flue gas emissions from industrial coal-fired boilers, including a body, a cover plate fixedly connected to the upper surface of the body, an inlet pipe fixedly plugged into the bottom of the left side of the body, an outlet pipe fixedly plugged into the right side of the upper surface of the cover plate, a motor fixedly connected to the center of the upper surface of the cover plate, the output shaft of the motor extends to the interior of the body and is fixedly connected to a rotating rod; the environmentally friendly desulfurization equipment for flue gas emissions from industrial coal-fired boilers facilitates the rotation of the separation plate through the rotating rod, and conveniently blocks the fluid by using the baffle to control the movement of the movable plate and the limiting ball, facilitates the control of the airtight plate, and uses the airtight plate to collect the air inside the body, which is convenient for squeezing it into the inside of the pore, and uses the support spring to stabilize the sealing plate, which facilitates the formation of bubbles in the movable groove into smaller bubbles, thereby improving the desulfurization effect.

[0004] However, the aforementioned patent has the following drawbacks: the flue gas enters the machine at a fixed position, and merely stirring the flue gas to bring the desulfurization solution into contact with the flue gas is ineffective in desulfurization. Furthermore, the internal structure of the separation plate is not in a vacuum state, which limits its capacity for collecting air and, therefore, its effectiveness in eliminating bubbles. Therefore, we propose a desulfurization device for industrial coal-fired boiler flue gas emissions. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a desulfurization device for flue gas emissions from industrial coal-fired boilers.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A desulfurization device for flue gas emissions from industrial coal-fired boilers, comprising a desulfurization cylinder, wherein two air-dividing ring tubes are fixedly sleeved on the inner wall of the desulfurization cylinder, a U-shaped tube is fixedly connected between the two air-dividing ring tubes, one end of the U-shaped tube extends to the outside of the desulfurization cylinder and is fixedly connected to an air inlet pipe, a one-way valve is fixedly installed in the middle of the air inlet pipe, a plurality of air injection holes are respectively provided on the top surfaces of the two air-dividing ring tubes, a cylinder cover is threadedly installed on the top of the desulfurization cylinder, and a stirring mechanism is provided on the cylinder cover.

[0008] As a preferred solution of the present invention, the stirring mechanism includes a vertical frame fixedly connected to the top surface of the cylinder cover, the inner cavity of the vertical frame is fixedly sleeved with a sliding rod, the inner cavity of the vertical frame is rotatably connected with a reciprocating screw rod, the top surface of the vertical frame is fixedly installed with a first motor, the output shaft of the first motor is connected to the top end of the reciprocating screw rod, the outer side of the reciprocating screw rod is threadedly sleeved with a lifting seat, the lifting seat and the sliding rod are movably sleeved, the top surface of the lifting seat is fixedly installed with a second motor, the output shaft of the second motor extends to the inner cavity of the desulfurization cylinder and is fixedly connected to a rotating shaft, a plurality of cutting knives are fixedly connected to the side of the rotating shaft, a plurality of stirring plates are fixedly connected to the side of the rotating shaft, and liquid permeable holes are provided on the plurality of stirring plates.

[0009] As a preferred solution of the present invention, a material guide slope is provided at the bottom of the inner cavity of the desulfurization cylinder, a placement groove is opened at the bottom of the inner cavity of the desulfurization cylinder, a collection box is placed in the inner cavity of the placement groove, a lifting rod is fixedly connected to the inner cavity of the collection box, and a guide slope is provided at the top of the inner cavity of the collection box.

[0010] As a preferred solution of the present invention, a control panel is fixedly mounted on the top surface of the cylinder cover, and the control panel is electrically connected to the first motor and the second motor respectively.

[0011] As a preferred solution of the present invention, an exhaust pipe is fixedly sleeved on the cylinder cover, and the bottom end of the exhaust pipe extends to the bottom of the cylinder cover.

[0012] As a preferred solution of the present invention, the inner wall of the placement groove and the outer side surface of the collection box are in contact with each other.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the present invention, the flue gas is introduced into the inner cavity of the gas-dividing ring pipe through the gas-dividing ring pipe, the jet holes, the U-shaped pipe, the air inlet pipe and the one-way valve. The flue gas in the gas-dividing ring pipe is sprayed from the multiple jet holes into the desulfurization solution in the inner cavity of the desulfurization cylinder, so that the flue gas is dispersed and introduced into the desulfurization solution, ensuring that the flue gas and the desulfurization solution are fully mixed, thereby ensuring the desulfurization effect of the flue gas.

[0015] (2) In the present invention, the second motor is used to drive the stirring plate and the cutting knife to rotate, the stirring plate is used to stir and mix the flue gas and the desulfurization solution, and the cutting knife is used to chop the bubbles in the solution to avoid large bubbles in the solution. At the same time, the reciprocating screw is driven to rotate by the first motor, and the threaded fit between the reciprocating screw and the lifting seat is used to drive the stirring plate and the cutting knife to move back and forth up and down, thereby changing the height at which the cutting knife stirs the desulfurization solution and adjusting the height at which the cutting knife chop the bubbles, thereby ensuring that bubbles at different heights are eliminated and improving the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the desulfurization cylinder of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the gas distribution ring tube of the utility model;

[0020] Figure 5 This is a structural diagram of the vertical frame of the utility model;

[0021] Figure 6 This is a schematic structural diagram of the collection box of the present utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Desulfurization cylinder; 2. Cylinder cover; 3. Stirring mechanism; 4. Air distribution ring pipe; 5. Jet hole; 6. U-shaped pipe; 7. Inlet pipe; 8. One-way valve; 9. Control panel; 10. Exhaust pipe; 11. Vertical frame; 12. Sliding rod; 13. Reciprocating screw; 14. First motor; 15. Lifting seat; 16. Second motor; 17. Rotating shaft; 18. Stirring plate; 19. Liquid permeable hole; 20. Cutting knife; 21. Material guide slope; 22. Placement trough; 23. Collection box; 24. Lifting rod; 25. Guide slope. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Example:

[0028] See also Figure 1-6 A desulfurization device for flue gas emissions from industrial coal-fired boilers, comprising a desulfurization cylinder 1, two air distribution ring tubes 4 being fixedly sleeved on the inner wall of the desulfurization cylinder 1, a U-shaped tube 6 being fixedly connected between the two air distribution ring tubes 4, one end of the U-shaped tube 6 extending to the outside of the desulfurization cylinder 1 and fixedly connected to an air intake pipe 7, a one-way valve 8 being fixedly installed in the middle of the air intake pipe 7, a plurality of injection holes 5 being respectively provided on the top surfaces of the two air distribution ring tubes 4, a cylinder cover 2 being threadedly installed on the top of the desulfurization cylinder 1, and a stirring mechanism 3 being provided on the cylinder cover 2.

[0029] In this embodiment, a one-way valve 8 is used to prevent the desulfurization solution in the desulfurization cylinder 1 from flowing into the air inlet pipe 7 through the air distribution ring pipe 4 and the U-shaped pipe 6. The flue gas can only enter the U-shaped pipe 6 through the air inlet pipe 7, so that the flue gas can be dispersed and sprayed from the jet holes 5 on the air distribution ring pipe 4 to the inner cavity of the desulfurization cylinder 1. The desulfurization solution can be lime, limestone and an alkaline solution prepared with a calcareous agent.

[0030] For details, please refer to Figure 1 、 Figure 2 and Figure 5The stirring mechanism 3 includes a vertical frame 11 fixedly connected to the top surface of the cylinder cover 2, the inner cavity of the vertical frame 11 is fixedly sleeved with a sliding rod 12, the inner cavity of the vertical frame 11 is rotatably connected with a reciprocating screw rod 13, and the top surface of the vertical frame 11 is fixedly installed with a first motor 14, the output shaft of the first motor 14 is connected to the top of the reciprocating screw rod 13, the outer side of the reciprocating screw rod 13 is threadedly sleeved with a lifting seat 15, the lifting seat 15 and the sliding rod 12 are movably sleeved, and the top surface of the lifting seat 15 is fixedly installed with a second motor 16, the output shaft of the second motor 16 extends to the inner cavity of the desulfurization cylinder 1 and is fixedly connected with a rotating shaft 17, a plurality of cutting knives 20 are fixedly connected to the side of the rotating shaft 17, and a plurality of stirring plates 18 are fixedly connected to the side of the rotating shaft 17, and a plurality of the stirring plates 18 are each provided with a liquid permeable hole 19.

[0031] In this embodiment, the lifting seat 15 is limited by sliding between the slide rod 12 and the lifting seat 15 , so that the lifting seat 15 can only move along the axial direction of the reciprocating screw rod 13 .

[0032] For details, please refer to Figure 2 、 Figure 3 and Figure 6 A material guide slope 21 is provided at the bottom of the inner cavity of the desulfurization cylinder 1, a placement groove 22 is opened at the bottom of the inner cavity of the desulfurization cylinder 1, a collection box 23 is placed in the inner cavity of the placement groove 22, a lifting rod 24 is fixedly connected to the inner cavity of the collection box 23, and a guide slope 25 is provided at the top of the inner cavity of the collection box 23.

[0033] In this embodiment, the guide slope 21 is used to guide the impurities falling to the bottom of the inner cavity of the desulfurization cylinder 1 so that the impurities can enter the collection box 23.

[0034] For details, please refer to Figure 5 A control panel 9 is fixedly mounted on the top surface of the barrel cover 2 , and the control panel 9 is electrically connected to the first motor 14 and the second motor 16 respectively.

[0035] In this embodiment, the control panel 9 is used to control the first motor 14 and the second motor 16 .

[0036] For details, please refer to Figure 2 and Figure 5 An exhaust pipe 10 is fixedly sleeved on the cylinder cover 2 , and the bottom end of the exhaust pipe 10 extends to the bottom of the cylinder cover 2 .

[0037] In this embodiment, the exhaust pipe 10 is used to discharge the desulfurized flue gas so as to perform subsequent treatment on the flue gas.

[0038] For details, please refer to Figure 2 and Figure 3The inner wall of the placement groove 22 and the outer side surface of the collection box 23 are in contact with each other.

[0039] In this embodiment, the stability of the collecting box 23 placed in the placement groove 22 is ensured, and at the same time, the collecting box 23 is ensured to completely collect the impurities located at the bottom of the inner cavity of the desulfurization cylinder 1.

[0040] Working principle: When in use, first load the desulfurization solution into the inner cavity of the desulfurization cylinder 1, and introduce the boiler flue gas into the two air distribution ring pipes 4 through the air inlet pipe 7 and the U-shaped pipe 6, and use the multiple jet holes 5 above the air distribution ring pipe 4 to introduce the flue gas into the desulfurization solution in the inner cavity of the desulfurization cylinder 1, ensuring that the flue gas is dispersed and introduced into the desulfurization solution, so that the flue gas is fully in contact with the desulfurization solution, and then start the second motor 16 to drive the rotating shaft 17, the stirring plate 18 and the cutting knife 20 to rotate, use the stirring plate 18 to stir and mix the flue gas and the desulfurization solution, and use the cutting knife 20 to remove the bubbles in the solution. The desulfurization solution is chopped to avoid large bubbles in the solution, and then the first motor 14 is started to drive the reciprocating screw 13 to rotate. The threaded fit between the reciprocating screw 13 and the lifting seat 15 drives the lifting seat 15 to move back and forth. The lifting seat 15 drives the second motor 16, the rotating shaft 17, the stirring plate 18 and the cutting knife 20 to move back and forth, changing the height at which the cutting knife 20 stirs the desulfurization solution, and adjusting the height at which the cutting knife 20 chops the bubbles. Finally, the impurities generated by desulfurization sink into the collection box 23 and are collected, and the desulfurized flue gas is discharged from the exhaust pipe 10.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A desulfurization device for flue gas emissions from industrial coal-fired boilers, comprising a desulfurization cylinder (1), characterized in that: Two air-distributing ring tubes (4) are fixedly sleeved on the inner wall of the desulfurization cylinder (1), a U-shaped tube (6) is fixedly connected between the two air-distributing ring tubes (4), one end of the U-shaped tube (6) extends to the outside of the desulfurization cylinder (1) and is fixedly connected to an air inlet pipe (7), a one-way valve (8) is fixedly installed in the middle of the air inlet pipe (7), a plurality of air injection holes (5) are respectively opened on the top surfaces of the two air-distributing ring tubes (4), a cylinder cover (2) is threadedly installed on the top of the desulfurization cylinder (1), and a stirring mechanism (3) is provided on the cylinder cover (2); The stirring mechanism (3) includes a vertical frame (11) fixedly connected to the top surface of the cylinder cover (2), the inner cavity of the vertical frame (11) is fixedly sleeved with a sliding rod (12), the inner cavity of the vertical frame (11) is rotatably connected with a reciprocating screw (13), the top surface of the vertical frame (11) is fixedly installed with a first motor (14), the output shaft of the first motor (14) is connected to the top end of the reciprocating screw (13), the outer side of the reciprocating screw (13) is threadedly sleeved with a lifting seat (15), and the The lifting seat (15) and the sliding rod (12) are movably connected, and a second motor (16) is fixedly installed on the top surface of the lifting seat (15). The output shaft of the second motor (16) extends to the inner cavity of the desulfurization cylinder (1) and is fixedly connected to a rotating shaft (17). A plurality of cutting knives (20) are fixedly connected to the side of the rotating shaft (17). A plurality of stirring plates (18) are fixedly connected to the side of the rotating shaft (17), and a plurality of liquid permeable holes (19) are provided on the plurality of stirring plates (18).

2. The desulfurization equipment for industrial coal-fired boiler flue gas emissions according to claim 1, characterized in that: A material guide slope (21) is provided at the bottom of the inner cavity of the desulfurization cylinder (1), a placement groove (22) is opened at the bottom of the inner cavity of the desulfurization cylinder (1), a collection box (23) is placed in the inner cavity of the placement groove (22), a lifting rod (24) is fixedly connected to the inner cavity of the collection box (23), and a guide slope (25) is provided at the top of the inner cavity of the collection box (23).

3. The desulfurization equipment for industrial coal-fired boiler flue gas emissions according to claim 1, characterized in that: A control panel (9) is fixedly mounted on the top surface of the cylinder cover (2), and the control panel (9) is electrically connected to the first motor (14) and the second motor (16), respectively.

4. The desulfurization equipment for industrial coal-fired boiler flue gas emissions according to claim 1, characterized in that: An exhaust pipe (10) is fixedly sleeved on the cylinder cover (2), and the bottom end of the exhaust pipe (10) extends to the bottom of the cylinder cover (2).

5. The desulfurization equipment for industrial coal-fired boiler flue gas emissions according to claim 1, characterized in that: The inner wall of the placement groove (22) and the outer side surface of the collection box (23) are in contact with each other.

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