A waste incineration flue gas treatment device

Abstract

This application relates to the technical field of electrostatic precipitators, and discloses a garbage incineration flue gas treatment device, which includes an outer box body. A dust collection chamber is provided inside the outer box body, and an end plate is provided at the bottom of the outer surface of the outer box body. An adsorption device is provided in the middle of the inner cavity of the outer box body, and one side of the outer surface of the adsorption device is located in the inner cavity of the outer box body, while the other side of the outer surface of the adsorption device is located in the inner cavity of the dust collection chamber. A discharge electrode plate is provided in the middle of the top of the inner cavity of the outer box body. For the garbage incineration flue gas treatment device provided by this application, with respect to the setting of the adsorption device and its upper structure, the dust collection ring carrying positive charges on its outer surface can be used to capture the dust particles carrying negative charges, and during the continuous rotation of the dust collection ring, the dust particles are transferred from the inner cavity of the outer box body to the inner cavity of the dust collection chamber and scraped off, thereby ensuring that too many dust particles do not accumulate on the outer surface of the dust collection ring, so as to always maintain its strong adsorption force for the dust particles carrying negative charges.

Description

Technical Field

[0001] This application relates to the technical field of electrostatic precipitators, and particularly to a garbage incineration flue gas treatment device. Background Art

[0002] Garbage incineration is a process of oxidizing garbage at high temperature to achieve volume reduction and turn the garbage into residues or molten solid substances. Compared with traditional treatment methods, the volume reduction effect of incinerated garbage is significant, and various pathogens can be effectively eliminated, and toxic and harmful substances can be converted into harmless substances. At the same time, the heat generated during garbage incineration can be recycled to achieve the purpose of waste resource utilization. Therefore, the incineration treatment of garbage has become an important part of the circular economy.

[0003] However, a large amount of soot is inevitably generated during garbage incineration treatment. Therefore, existing garbage incinerators need to be equipped with soot purification devices to reduce the pollution caused to the atmosphere during soot emission. Among them, because the temperature of the soot generated by garbage incineration is relatively high, electrostatic precipitation is mostly used to remove the dust particles. However, when the existing electrostatic precipitation aggregates the negatively charged dust particles onto the positively charged dust collection plate, as the dust particles on the dust collection plate accumulate, the adsorption capacity for negatively charged dust particles decreases, which seriously affects the treatment effect on the dust particles in the soot, and it is extremely easy for a large number of dust particles to be unable to be captured by the dust collection plate and discharged into the atmospheric environment, with poor stability and reliability.

[0004] Therefore, there is an urgent need for an electrostatic precipitation device for garbage incineration to solve the defects existing in the actual use process of the existing electrostatic precipitation device. Summary of the Invention

[0005] This application provides a garbage incineration flue gas treatment device, which has the advantages of being able to scrape and collect the dust particles aggregated on the dust collection plate while the dust collection plate adsorbs the negatively charged dust particles, so that it can always maintain a strong adsorption force for the negatively charged dust particles and has a good treatment effect on the soot, to solve the problem that when the existing electrostatic precipitation aggregates the negatively charged dust particles onto the positively charged dust collection plate, as the dust particles on the dust collection plate accumulate, the adsorption capacity for negatively charged dust particles decreases, which seriously affects the treatment effect on the dust particles in the soot, and it is extremely easy for a large number of dust particles to be unable to be captured by the dust collection plate and discharged into the atmospheric environment.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: a waste incineration flue gas treatment equipment, comprising an outer box body whose top is fixedly installed in the flue gas duct of the incinerator and is connected thereto, a group of dust collecting cavities for depositing dust particles are respectively provided on both sides of the inner part of the outer box body, and a group of end plates are respectively provided at the bottom of the left and right sides of the outer surface of the outer box body, and the dust particles deposited in the dust collecting cavities can be cleaned by opening the end plates, a group of adsorption devices are respectively provided on both sides of the middle part of the inner cavity of the outer box body, and one side of the outer surface of the adsorption device is located at the outer box body. The adsorption device is located in the inner cavity of the dust collecting chamber, and the other side of the outer surface of the adsorption device is located in the inner cavity of the dust collecting chamber. When the dust-laden flue gas flows in the inner cavity of the outer box, the dust particles thereon are captured by the adsorption device and adsorbed on its outer surface. As the adsorption device rotates, the dust particles are transferred to the inner cavity of the dust collecting chamber and scraped off. A discharge electrode is provided in the middle of the top end of the inner cavity of the outer box, and an ionization field is formed at the top of the inner cavity of the outer box, so that the dust particles flowing through here can combine with negative ions and carry negative charges, and then can be captured by the adsorption device with positive charge on the outer surface.

[0007] Furthermore, the adsorption device includes a connecting rod with both ends fixedly mounted on the outer box body, a driving mechanism fixedly mounted on the middle part of the outer surface of the connecting rod, and a dust collecting ring located on the periphery of the driving mechanism is transmission-connected to the output shaft of the driving mechanism, and a group of positive electrode ring groups with local annular structures are respectively provided on both sides of the outer surface of the connecting rod, and a carbon ring is provided on the outer surface of the positive electrode ring group to contact the inner wall of the dust collecting ring, and then under the action of the positive electrode ring group and the carbon ring, the outer surface of the dust collecting ring can be forced to carry positive charge to capture dust particles carrying negative charge.

[0008] Furthermore, the outer surface of the dust collecting ring is divided into several areas by its internal insulating strips, and negative electrode ring groups with partial annular structures staggered from the positive electrode ring group are fixedly installed on both sides of the outer surface of the positive electrode ring group, so as to neutralize the positive charge on a certain area of the dust collecting ring that rotates to contact the negative electrode ring group, and make the dust particles captured thereon easier to be scraped off.

[0009] Furthermore, the dust collecting ring on the left side rotates counterclockwise under the driving action of the driving mechanism, while the dust collecting ring on the right side rotates clockwise under the driving action of the driving mechanism thereon.

[0010] Furthermore, a piston member is provided at the top of the dust collection chamber, and the piston member is drivingly connected to the top of the outer box body through an elastic member. A sealing block is fixedly installed at the bottom of the piston member, and the bottom of one side of the sealing block is in contact with the outer surface of the dust collection ring initially. Thus, when the flue gas treatment device is not working, the dust collection chamber can be sealed to prevent the dust particles deposited thereon from flowing back into the inner cavity of the outer box body and being discharged into the atmosphere. An inner cavity body is provided inside the outer box body and is in clearance communication with the piston member and the sealing block. The inner cavity of the inner cavity body is filled with a gas having a relatively large coefficient of thermal expansion with full volume. Thus, when the flue gas treatment device is working, since the temperature of the flue gas entering the inner cavity of the outer box body is relatively high, under the action of thermal expansion and contraction, the gas in the inner cavity of the inner cavity body expands, and forces the piston member to move upward to compress the elastic member, causing the bottom of one side of the sealing block to be separated from the outer surface of the dust collection ring to ensure the normal operation of the adsorption device.

[0011] The beneficial effects of the present invention are as follows:

[0012] A waste incineration flue gas treatment device provided by the present application, for the setting of the adsorption device and its structure thereon, can utilize the dust collection ring with a positive charge on its outer surface to capture the dust particles with a negative charge, and transfer the dust particles from the inner cavity of the outer box body to the inner cavity of the dust collection chamber and scrape them off during the continuous rotation of the dust collection ring, thereby ensuring that there will not be too many dust particles accumulated on the outer surface of the dust collection ring, so as to always maintain a strong adsorption force on the dust particles with a negative charge, making the flue gas treatment device have a good treatment effect on soot, and high stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts:

[0014] Figure 1 It is a schematic structural diagram of the present invention;

[0015] Figure 2 It is a front view of the structure of the present invention;

[0016] Figure 3 It is a top view of the structure of the present invention;

[0017] Figure 4 It is a schematic installation structure diagram of the adsorption device of the present invention.

[0018] In the figure: 1 - outer box body, 2 - dust collection chamber, 3 - adsorption device, 4 - discharge electrode plate, 5 - end plate, 6 - piston part, 7 - sealing block, 8 - elastic part, 9 - inner cavity body, 10 - connecting rod, 11 - driving mechanism, 12 - dust collection ring, 13 - positive electrode ring group, 14 - carbon ring, 15 - negative electrode ring group. Detailed implementation manner

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figure 1 、 Figure 2 shown, a garbage incineration flue gas treatment device includes an outer box body 1 fixedly installed at the top of and communicating with the flue gas pipeline of the incinerator. On both sides inside the outer box body 1, there are respectively provided a group of dust collection chambers 2 for depositing dust particles. And at the bottom of the left and right sides of the outer surface of the outer box body 1, there are respectively provided a group of end plates 5. Thus, the dust particles deposited in the dust collection chambers 2 can be cleaned by opening the end plates 5. On both sides in the middle of the inner cavity of the outer box body 1, there are respectively provided a group of adsorption devices 3. And one side of the outer surface of the adsorption device 3 is located in the inner cavity of the outer box body 1, while the other side of the outer surface of the adsorption device 3 is located in the inner cavity of the dust collection chamber 2. Thus, when the dust-containing flue gas flows in the inner cavity of the outer box body 1, the dust particles on it are captured by the adsorption device 3 and adsorbed on its outer surface. And with the rotation of the adsorption device 3, the dust particles are transferred to the inner cavity of the dust collection chamber 2 and scraped off. In the middle of the top of the inner cavity of the outer box body 1, there is a discharge electrode plate 4, and an ionization field is formed at the top of the inner cavity of the outer box body 1, so that the dust particles flowing through here can combine with negative ions to carry negative charges, and thus can be captured by the adsorption device 3 with a positively charged outer surface.

[0021] As Figures 2 - 4As shown, in the present technical solution, the adsorption device 3 includes a connecting rod 10 fixedly mounted on the outer box body 1 at both ends, a driving mechanism 11 is fixedly mounted on the middle part of the outer surface of the connecting rod 10, and the output shaft of the driving mechanism 11 is transmission-connected to a dust collecting ring 12 located on the periphery of the driving mechanism 11, the driving mechanism 11 is configured as a motor with a hollow output shaft, and the connecting rod 10 passes through the output shaft of the hollow structure and is fixedly connected to the motor, and the output shaft of the hollow structure is fixedly connected to the inner wall of the dust collecting ring 12, so that when the driving mechanism 11 is triggered, the dust collecting ring 12 can be synchronously driven to rotate accordingly, and a group of positive electrode ring groups 13 of a local annular structure are respectively provided on both sides of the outer surface of the connecting rod 10, and a carbon ring 14 is provided on the outer surface of the positive electrode ring group 13 to contact the inner wall of the dust collecting ring 12, and then under the action of the positive electrode ring group 13 and the carbon ring 14, the outer surface of the dust collecting ring 12 can be forced to carry positive charge to capture dust particles carrying negative charge;

[0022] A dust collecting ring 12 located on the periphery of the driving mechanism 11 is connected to the output shaft of the driving mechanism 11. One side of the outer surface of the dust collecting ring 12 is located in the inner cavity of the outer box body 1, and the other side of the outer surface of the dust collecting ring 12 is located in the inner cavity of the dust collecting chamber 2. Therefore, under the driving action of the driving mechanism 11, the dust collecting ring 12 can be driven to rotate, and the dust particles captured on the outer surface of the dust collecting ring 12 can be transferred from the inner cavity of the outer box body 1 to the inner cavity of the dust collecting chamber 2.

[0023] like Figure 2 、 Figure 4 As shown, in the present technical solution, the outer surface of the dust collecting ring 12 is divided into several areas by its internal insulating strips, and the negative electrode ring group 15 with a partial annular structure staggered from the positive electrode ring group 13 is fixedly installed on both sides of the outer surface of the positive electrode ring group 13, so as to neutralize the positive charge on a certain area of the dust collecting ring 12 that rotates to contact the negative electrode ring group 15, and make the dust particles captured thereon easier to be scraped off.

[0024] like Figure 2 、 Figure 4 As shown, in this technical solution, the left dust collecting ring 12 rotates counterclockwise under the driving action of the driving mechanism 11, while the right dust collecting ring 12 rotates clockwise under the driving action of the driving mechanism 11 thereon.

[0025] like Figure 1 、 Figure 2 as well as Figure 4As shown, in this technical solution, a piston member 6 is provided at the top of the dust collection chamber 2, and the piston member 6 is drivingly connected to the top of the outer box body 1 through an elastic member 8. A sealing block 7 is fixedly installed at the bottom of the piston member 6, and the bottom of one side of the sealing block 7 is in contact with the outer surface of the dust collection ring 12 initially. Thus, when the flue gas treatment device is not working, the dust collection chamber 2 can be sealed to prevent the dust particles deposited thereon from flowing back into the inner cavity of the outer box body 1 and being discharged into the atmosphere. An inner cavity 9 is provided inside the outer box body 1 and is in clearance communication with the piston member 6 and the sealing block 7. The inside of the inner cavity 9 is filled with a gas having a relatively large coefficient of thermal expansion with a full volume. Thus, when the flue gas treatment device is working, since the temperature of the flue gas entering the inner cavity of the outer box body 1 is relatively high, under the action of thermal expansion and contraction, the gas in the inner cavity of the inner cavity 9 expands, and forces the piston member 6 to move upward to compress the elastic member 8, causing the bottom of one side of the sealing block 7 to separate from the outer surface of the dust collection ring 12 to ensure the normal operation of the adsorption device 3.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waste incineration flue gas treatment device, comprising an outer box body (1), wherein a set of dust collection chambers (2) are respectively arranged on both sides inside the outer box body (1), and a set of end plates (5) are respectively arranged at the bottoms of the left and right sides of the outer surface of the outer box body (1), and the characteristics are as follows: On both sides of the middle part of the inner cavity of the outer box body (1), a set of adsorption devices (3) are respectively arranged. One side of the outer surface of the adsorption device (3) is located in the inner cavity of the outer box body (1), and the other side of the outer surface of the adsorption device (3) is located in the inner cavity of the dust collection chamber (2). In the middle of the top of the inner cavity of the outer box body (1), a discharge electrode plate (4) is arranged; At the top of the dust collection chamber (2), a piston member (6) is arranged. The piston member (6) is drivingly connected to the top of the outer box body (1) through an elastic member (8). A sealing block (7) is fixedly installed at the bottom of the piston member (6). The bottom of one side of the sealing block (7) is in contact with the outer surface of the dust collection ring (12) initially. Inside the outer box body (1), an inner cavity body (9) is provided which is connected to the piston member (6) and the sealing block (7) with a gap. And a gas is filled inside the inner cavity body (9); Furthermore, when the flue gas treatment equipment is working, since the temperature of the flue gas entering the inner cavity of the outer box body (1) is high, under the action of thermal expansion and contraction, the gas inside the inner cavity of the inner cavity body (9) expands, and forces the piston member (6) to move upward to compress the elastic member (8), causing the bottom of one side of the sealing block (7) to separate from the outer surface of the dust collection ring (12) to ensure the normal operation of the adsorption device (3).

2. The waste incineration flue gas treatment equipment according to claim 1, wherein The adsorption device (3) includes a connecting rod (10) fixedly installed on the outer box body (1) at both ends. In the middle of the outer surface of the connecting rod (10), a driving mechanism (11) is fixedly installed. On the output shaft of the driving mechanism (11), a dust collection ring (12) located outside the driving mechanism (11) is fixedly installed. On both sides of the outer surface of the connecting rod (10), a set of partial annular structure positive electrode ring groups (13) are respectively arranged. And on the outer surface of the positive electrode ring group (13), a carbon ring (14) is provided which is in contact with the inner wall of the dust collection ring (12).

3. The waste incineration flue gas treatment equipment according to claim 2, characterized in that, The outer surface of the dust collection ring (12) is divided into several regions by the internal insulating strips inside it. And on both sides of the outer surface of the positive electrode ring group (13), a negative electrode ring group (15) with a partial annular structure which is staggered with the positive electrode ring group (13) is fixedly installed.

4. The waste incineration flue gas treatment equipment according to claim 3, characterized in that, The left dust collection ring (12) rotates counterclockwise under the driving action of the driving mechanism (11), and the right dust collection ring (12) rotates clockwise under the driving action of the driving mechanism (11) on it.

Images