Dust removal equipment for boiler flue gas

Abstract

The utility model provides dust removal equipment for boiler flue gas, and aims to solve the technical problem that the existing dust removal equipment for the boiler flue gas is poor in dust removal rate. The dust removal equipment comprises a connecting pipeline and a dust removal pipeline, the bottom of the tank body is communicated with the other end of the connecting pipeline, an exhaust pipeline is arranged at the top of the tank body, and dust removal liquid is contained in the tank body; the fan is arranged in the exhaust pipeline, and airflow passing through the fan flows out of the tank body; the stirring assembly is arranged on the tank body, and the stirring end of the stirring assembly is located in the tank body and located above the end of the connecting pipeline. Gas is driven to flow through the fan, gas at the smoke outlet of the boiler enters the tank body through the connecting pipeline, dust is brought into the tank body, and the dust is left in the dust removal liquid after making contact with the dust removal liquid, so that the dust removal purpose is achieved. And bubbles entering the dust removal liquid are broken and scattered through the stirring assembly, so that the dust removal rate is improved, and the purpose of completely removing dust is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dust removal device, concretely relates to a dust removal equipment of boiler flue gas. BACKGROUND

[0002] In the industrial production process, if the flue gas generated by the operation of the boiler is directly discharged without treatment, it will cause serious pollution to the environment. Therefore, flue gas purification treatment has become a key link to meet environmental protection standards, and the dust removal process is particularly important.

[0003] The wet dust removal equipment widely used at present has obvious technical defects in actual operation: when the dust-containing flue gas passes through water bath treatment, the flue gas exists in the form of bubbles in the water, and the dust particles are wrapped inside these bubbles. With the bubbles floating in the water, the dust cannot be effectively settled, but is carried by the bubbles to the water surface.

[0004] When the bubbles burst at the water surface, the dust particles that should have been removed are mixed into the flue gas again, and finally discharged through the exhaust port of the dust removal equipment. This phenomenon significantly reduces the dust removal efficiency, and the actual measurement data shows that the removal rate of some fine particles is less than 60%, which seriously affects the overall environmental protection index. More seriously, the "bubble entrainment" effect will increase the escape rate of PM2.5 and other inhalable particles, causing a persistent impact on the surrounding air quality. SUMMARY

[0005] In view of the technical problem of poor dust removal rate of the existing boiler flue gas dust removal equipment, the utility model provides a dust removal equipment for boiler flue gas, which has the advantage of being able to completely remove dust from flue gas.

[0006] The technical scheme of the utility model is:

[0007] A dust removal equipment for boiler flue gas, comprising:

[0008] A connecting pipe, one end of which is in communication with the exhaust port of the boiler;

[0009] A tank, the bottom of which is in communication with the other end of the connecting pipe, and the top of which is provided with an exhaust pipe, and the tank has dust removal liquid inside;

[0010] A fan, which is arranged in the exhaust pipe, and the airflow passing through the fan flows out of the tank;

[0011] A stirring assembly, which is arranged on the tank, and the stirring end of the stirring assembly is located inside the tank and above the end of the connecting pipe.

[0012] Optionally, the top of the tank has an inlet, and the bottom of the tank is conical and has an outlet.

[0013] Optionally, the inner wall of the tank is provided with a plurality of wave-stopping plates.

[0014] Optionally, the stirring assembly comprises:

[0015] A motor is arranged on the top of the tank;

[0016] A main shaft is rotatably arranged in the tank and has a top end connected with the output shaft of the motor;

[0017] A plurality of main paddles are arranged on the main shaft, the main paddles are plate-shaped, and the plate surface of the main paddles is parallel to the liquid surface of the dust removal liquid.

[0018] Optionally, the main shaft is a hollow structure, a core shaft is rotatably arranged in the main shaft, the two ends of the core shaft are respectively arranged to pass out from the two ends of the main shaft, one end of the core shaft is connected with the output shaft of the motor, and a plurality of secondary paddles are arranged on the other end of the core shaft.

[0019] Optionally, the length of the secondary paddle is smaller than the length of the main paddle.

[0020] Optionally, the rotation direction of the core shaft is opposite to that of the main shaft.

[0021] Optionally, the core shaft and the output shaft of the motor are connected through a pair of gears, and the main shaft and the output shaft of the motor are connected through a pair of pulleys.

[0022] Optionally, the distance between the secondary paddle and the end of the connecting pipeline is smaller than the distance between the main paddle and the end of the connecting pipeline.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The tank and the flue gas outlet of the boiler are connected through the connecting pipeline, then the fan is arranged on the exhaust pipeline on the top of the tank, so that the fan drives the gas flow, when the fan is started, the tank is in a negative pressure state, at this time, under the action of the air pressure, the flue gas of the boiler enters the tank through the connecting pipeline, so that the dust is brought into the tank, since the dust removal liquid is arranged in the tank, the dust is left in the dust removal liquid after contacting with the dust removal liquid, so that the purpose of removing the dust is achieved.

[0025] In the technical scheme, the bubbles entering the dust removal liquid are broken and scattered through the stirring assembly, so that the dust removal rate is improved, and the purpose of completely removing the dust is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The structural schematic diagram of the present application is shown in the figure.

[0028] Figure 2 The structural schematic diagram of the present application is shown in the figure. Figure 1 The enlarged schematic diagram of A in the figure. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are simply described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0030] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of a specific example are described in the following. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0032] The embodiments of the present application will be described in detail below with reference to the drawings.

[0033] Embodiment:

[0034] Referring to Figure 1 The embodiment discloses a dust removal device for boiler flue gas, which comprises a connecting pipeline 10, a tank body 20, an exhaust pipeline 30, a fan 40 and a stirring assembly 50. The one end of the connecting pipeline 10 is communicated with the flue gas outlet of a boiler 60, and the other end of the connecting pipeline 10 is connected with the tank body 20.

[0035] Specifically, the one end of the connecting pipeline 10 connected with the tank body 20 is located at the bottom of the tank body 20, and the end of the connecting pipeline 10 is located at the middle of the inner side of the tank body 20 and is close to the bottom of the tank body 20, and the end of the connecting pipeline 10 faces upwards.

[0036] The exhaust pipeline 30 is arranged at the top of the tank body 20, and the inside of the tank body 20 is filled with dust removal liquid 23, and the dust removal liquid 23 accounts for four-fifths of the volume of the tank body 20.

[0037] The fan 40 is arranged in the exhaust pipeline 30, and the power of the fan 40 is determined according to the depth of the dust removal liquid 23 in the tank body 20, so as to ensure that the dust removal liquid 23 does not flow back to the connecting pipeline 10. When the fan 40 works, the airflow passing through the fan 40 flows from the tank body 20 to the exhaust pipeline 30 and then to the outside.

[0038] The stirring assembly 50 is arranged on the tank body 20, and the stirring assembly 50 comprises a stirring end located in the tank body 20, and the stirring end is located above the end of the connecting pipeline 10.

[0039] The working principle of the embodiment is that the tank body 20 and the flue gas outlet of the boiler 60 are communicated through the connecting pipeline 10, then the fan 40 is arranged on the exhaust pipeline 30 at the top of the tank body 20, so as to drive the gas flow through the fan 40, when the fan 40 starts, the tank body 20 is in a negative pressure state, at this time, under the action of air pressure, the gas at the flue gas outlet of the boiler 60 enters the tank body 20 through the connecting pipeline 10, so as to bring the dust into the tank body 20, since the dust removal liquid 23 is arranged in the tank body 20, therefore, after the dust contacts with the dust removal liquid 23, the dust is left in the dust removal liquid 23, so as to achieve the purpose of removing the dust.

[0040] In the technical solution, the gas bubbles entering the dust removal liquid 23 are broken and scattered through the stirring assembly 50, so as to improve the dust removal rate, and the purpose of completely removing the dust is achieved.

[0041] Preferably, the top of the tank body 20 is provided with an inlet 21, and the bottom of the tank body 20 is provided with an outlet 22, through the arrangement of the inlet 21 at the top of the tank body 20, the dust removal liquid 23 (generally tap water) can be added into the tank body 20, and through the outlet 22 at the bottom of the tank body 20, the dust-containing turbid dust removal liquid 23 can be discharged out of the tank body 20.

[0042] In one embodiment, the tank 20 is provided with a plurality of wave-stopping plates 24, all of which are arranged vertically and evenly around the inner wall of the tank 20. The liquid surface of the dedusting liquid 23 is located in the middle of the wave-stopping plates 24.

[0043] In this embodiment, the wave-stopping plates 24 can prevent the stirring end of the stirring assembly 50 from generating strong waves in the tank 20, and can also reduce the rotational kinetic energy of the dedusting liquid 23.

[0044] In another embodiment, the tank 20 is provided with a plurality of wave-stopping plates 24, all of which are arranged vertically and evenly around the inner wall of the tank 20. The liquid surface of the dedusting liquid 23 is located in the middle of the wave-stopping plates 24.

[0045] In another embodiment, the tank 20 is provided with a plurality of wave-stopping plates 24, all of which are arranged vertically and evenly around the inner wall of the tank 20. The liquid surface of the dedusting liquid 23 is located in the middle of the wave-stopping plates 24.

[0046] The stirring assembly 50 comprises a motor 51, a main shaft 52 and a main paddle 53. The motor 51 is fixedly installed on the top of the tank 20, the main shaft 52 is arranged vertically and rotatably on the tank 20. One end of the main shaft 52 is located outside the tank 20 and is connected with the output shaft of the motor 51. The other end of the main shaft 52 extends into the tank 20 and is provided with a plurality of main paddles 53 on the end of the main shaft 52 located in the tank 20. All of the main paddles 53 are located above the end of the connecting pipeline 10, and the main paddles 53 are the stirring end of the stirring assembly 50.

[0047] In this embodiment, the motor 51 drives the main shaft 52 to rotate, thereby driving the main paddles 53 to rotate in the tank 20, so as to break and scatter the bubbles output from the connecting pipeline 10.

[0048] Preferably, the main paddles 53 are plate-shaped, and the plate surface of the main paddles 53 is parallel to the liquid surface of the dedusting liquid 23. Through this design, on the one hand, the bubbles output from the connecting pipeline 10 can be broken and scattered, and on the other hand, the force of the main paddles 53 on the dedusting liquid 23 can be reduced, thereby reducing the rotational potential energy of the dedusting liquid 23.

[0049] In another embodiment, the tank 20 is provided with a plurality of wave-stopping plates 24, all of which are arranged vertically and evenly around the inner wall of the tank 20. The liquid surface of the dedusting liquid 23 is located in the middle of the wave-stopping plates 24.

[0050] The main shaft 52 is a hollow structure, and a core shaft 54 is rotatably arranged in the main shaft 52 through a plurality of bearings. The two ends of the core shaft 54 respectively pass through the two ends of the main shaft 52, one end of the core shaft 54 is connected with the output shaft of the motor 51, and the other end is provided with a plurality of secondary paddles 55.

[0051] The structure of the secondary paddles 55 is substantially the same as that of the main paddles 53, and the plate surface of the secondary paddles 55 is parallel to the plate surface of the main paddles 53. The distance between the secondary paddles 55 and the end of the connecting pipeline 10 is less than the distance between the main paddles 53 and the end of the connecting pipeline 10.

[0052] In this embodiment, by providing a secondary blade 55, the efficiency of breaking and dispersing bubbles can be improved. The length of the secondary blade 55 is less than the length of the main blade 53, so that after the secondary blade 55 breaks and disperses the bubbles initially, the main blade 53 can break and disperse the initially broken and dispersed bubbles again, making the bubbles smaller and more conducive to the absorption of dust.

[0053] Preferably, the spindle 54 rotates in the opposite direction to the main shaft 52. This design can improve the breaking and dispersing efficiency and also reduce the rotational potential energy of the dust removal liquid 23 to a minimum.

[0054] Generally speaking, such as Figure 2 As shown, the spindle 54 is powered to the output shaft of the motor 51 via a pair of gears 56, and the main shaft 52 is powered to the output shaft of the motor 51 via a pair of pulleys 57. These two transmission structures allow the spindle 54 and the main shaft 52 to rotate in opposite directions.

[0055] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A dust removal apparatus for boiler flue gas, characterized by, The utility model relates to a dust removal device for boiler exhaust, which comprises: a connecting pipe, one end of which is communicated with the exhaust port of a boiler; a tank, the bottom of which is communicated with the other end of the connecting pipe, and the top of which is provided with an exhaust pipe, and the tank is provided with dust removal liquid; a fan, which is arranged in the exhaust pipe, and the airflow passing through the fan flows out of the tank; a stirring assembly, which is arranged on the tank, and the stirring end of the stirring assembly is located in the tank and above the end of the connecting pipe; the stirring assembly comprises: a motor, which is arranged on the top of the tank; a main shaft, which is rotatably arranged in the tank, and the top end of which is power-connected with the output shaft of the motor; a plurality of main blades, which are arranged on the main shaft, and the main blades are plate-shaped, and the plate surface of the main blades is parallel to the liquid surface of the dust removal liquid; the main shaft is a hollow structure, a core shaft is rotatably arranged in the main shaft, and the two ends of the core shaft are respectively arranged to pass out from the two ends of the main shaft, one end of the core shaft is power-connected with the output shaft of the motor, and the other end of the core shaft is provided with a plurality of secondary blades; the rotation direction of the core shaft is opposite to that of the main shaft.

2. The dust removal apparatus of boiler flue gas according to claim 1, characterized in that, The top of the tank is provided with an inlet, the bottom of the tank is conical, and the tank is provided with an outlet.

3. The apparatus for dust removal of boiler flue gas according to claim 1, characterized by, The inner wall of the tank is provided with a plurality of wave-stopping plates.

4. The apparatus for dust removal of boiler flue gas according to claim 1, characterized by, The length of the secondary blades is less than that of the main blades.

5. The apparatus for dust removal of boiler flue gas according to claim 1, characterized by, The core shaft and the output shaft of the motor are power-connected through a pair of gears, and the main shaft and the output shaft of the motor are power-connected through a pair of pulleys.

6. The apparatus for dust removal of boiler flue gas according to claim 1, characterized by, The distance between the secondary blades and the end of the connecting pipe is less than that between the main blades and the end of the connecting pipe.

Images