Flue gas treatment device with heat recovery structure

Abstract

The utility model discloses a flue gas treatment device with a heat recovery structure, which comprises a shell, a dust removal shell which is arranged in the shell and can remove dust, a heating shell which can decoke is arranged on the inner wall of the shell, a pluggable first filter screen is arranged in the shell, and the flue gas treatment device further comprises a fixed shell. Through mutual cooperation of the dust removal shell, the heating shell, the first filter screen, the second filter screen, the high-voltage electrode, the dust collection plate, the getter pump, the connecting pipe, the second heat conduction pipe, the fixed pipe and the heating plate, the electric dust removal and decoking effect of flue gas is achieved, dust and tar in the flue gas can be effectively removed, dust is removed through a high-voltage electric field, and the dust removal efficiency is improved. Decoking is carried out through high-temperature heating, auxiliary dust removal and decoking are carried out through the two filter screens, dust and tar are prevented from being contained when flue gas is discharged to the outside, heat of gas obtained after high-temperature decoking is conveniently recycled by arranging the first heat conduction pipe, waste of heat energy is avoided, and practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas dust removal and char removal technology, specifically a flue gas treatment device with a heat recovery structure. Background Technology

[0002] In industries such as metallurgy and machining, there are equipment and workstations that generate flue gas. The flue gas contains a large amount of dust and tar, thus requiring dust removal and tar removal devices.

[0003] According to application number CN201820402037.0, a roller-type dust and char removal device for carbonized crop straw is disclosed. It includes a support frame and a cylinder placed on the support frame. Collection devices are installed at both the front and rear bottom ends of the cylinder. An air inlet is located at one end of the cylinder, and an air outlet is located on the upper side wall of the other end. A flue gas separation device is installed inside the cylinder. The rotating shaft of the flue gas separation device is connected to a coupling of a motor and a transmission device. The flue gas undergoes char and dust removal separation in the cylinder through the air inlet. The separated flue gas is discharged through the air outlet, and the char dust falls into the collection device through the cylinder. A receiving device is connected to the end of the collection device.

[0004] The above-mentioned cases showed poor dust and tar removal effects on flue gas, failing to effectively remove dust and tar from the flue gas, resulting in the exhaust flue gas still containing dust and tar, which would cause certain environmental pollution. Therefore, we provide a flue gas treatment device with a heat recovery structure. Utility Model Content

[0005] The purpose of this invention is to provide a flue gas treatment device with a heat recovery structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flue gas treatment device with a heat recovery structure, comprising a housing and a dust removal shell installed inside the housing for dust removal, a heating shell for tar removal installed on the inner wall of the housing, and a pluggable first filter screen provided inside the housing. By providing the first filter screen, dust and tar in the flue gas can be initially filtered.

[0007] Preferably, the device further includes a fixing shell, which is installed on the right side of the housing. A second filter screen is disposed inside the fixing shell. A first connecting block is installed on the left side of the first filter screen, and the left side of the first connecting block penetrates the housing and extends to its outside. A second connecting block is installed on the right side of the second filter screen, and the right side of the second connecting block penetrates the fixing shell and extends to its outside. Sealing plates are installed on the left side of the first connecting block and the right side of the second connecting block. By setting the sealing plates, it is convenient to remove the first filter screen from the housing for cleaning and to remove the second filter screen from the fixing shell for cleaning.

[0008] Preferably, a partition is installed on the inner wall of the fixed shell, an air pump is installed at the bottom of the fixed shell, and a first heat conduction pipe is installed on the top of the air pump. The top end of the first heat conduction pipe passes through the fixed shell and the partition from bottom to top and extends to the outside of the partition. By setting the first heat conduction pipe, it is convenient to cool down the heated gas, avoid the heated gas being directly discharged to the outside, and avoid the waste of resources. It is also convenient to recover and utilize heat.

[0009] Preferably, high-voltage electrodes are installed on both the left and right sides of the inner wall of the dust collector housing. A dust collection plate is provided inside the dust collector housing. The bottom of the dust collection plate is fixedly connected to the bottom of the inner wall of the dust collector housing through two support legs. The front of the dust collector housing penetrates the housing and extends to its outside. By setting high-voltage electrodes and a dust collection plate, dust particles acquire an electric charge under the action of a high-voltage electric field, becoming charged particles. The charged particles move towards the dust collection plate under the action of the electric field force and are adsorbed onto the dust collection plate, thereby achieving the dust removal effect.

[0010] Preferably, an air intake pump is installed at the bottom of the heating shell, and a connecting pipe communicating with the air intake pump is installed on the right side of the air intake pump. A second heat-conducting pipe is installed at the top of the connecting pipe, and the end of the second heat-conducting pipe away from the connecting pipe passes through the heating shell and extends into its interior.

[0011] Preferably, a fixing pipe is installed at the end of the second heat pipe away from the connecting pipe. The end of the fixing pipe away from the second heat pipe passes through the heating shell, the shell and the fixing shell in sequence and extends into the interior of the fixing shell. Heating plates are installed at the top and bottom of the inner wall of the heating shell. A temperature sensor is installed on the left side of the bottom of the inner wall of the heating shell. Through the second heat pipe and the heating plate, the effect of high-temperature heating to remove tar can be achieved, so that the tar is decomposed into gas.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention achieves the effect of electric dust and tar removal from flue gas through the coordinated operation of a dust removal shell, a heating shell, a first filter screen, a second filter screen, a high-voltage electrode, a dust collection plate, an air pump, a connecting pipe, a second heat-conducting pipe, a fixed pipe, and a heating plate. This effectively removes dust and tar from the flue gas. Dust removal is achieved through a high-voltage electric field, tar removal through high-temperature heating, and auxiliary dust and tar removal through two filter screens, preventing the flue gas from emitting dust and tar into the environment. The first heat-conducting pipe facilitates the recovery and utilization of heat from the gas after high-temperature tar removal, avoiding energy waste and improving practicality. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural schematic diagram of the side view of this utility model;

[0016] Figure 3 This is a structural cross-sectional view of the front view of this utility model;

[0017] Figure 4 This is a structural cross-sectional view of the heating shell, suction pump, and temperature sensor of this utility model from the front view.

[0018] Figure 5 This is a structural cross-sectional view of the fixed shell, second filter screen and limiting plate of this utility model from the front view.

[0019] In the diagram: 1. Housing, 2. Dust removal housing, 3. Heating housing, 4. First filter screen, 5. Fixing housing, 6. Second filter screen, 7. First connecting block, 8. Second connecting block, 9. Sealing plate, 10. Partition plate, 11. Air pump, 12. First heat conduction pipe, 13. High voltage electrode, 14. Dust collection plate, 15. Air pump, 16. Connecting pipe, 17. Second heat conduction pipe, 18. Fixing pipe, 19. Heating plate, 20. Temperature sensor, 21. Air guide cover, 22. Air inlet pipe, 23. Slide groove, 24. Slide rod, 25. Slider, 26. Buffer spring, 27. Limiting plate, 28. First top block, 29. Second top block. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 A flue gas treatment device with a heat recovery structure includes a housing 1 and a dust removal shell 2 installed inside the housing 1. A char removal heating shell 3 is fixedly connected to the inner wall of the housing 1. The heating shell 3 is made of high-temperature resistant heat insulation material so as not to affect the internal structure of the housing 1. A pluggable first filter screen 4 is provided inside the housing 1. The surface of the first filter screen 4 is in contact with the inner wall of the housing 1.

[0022] Furthermore, an air guide hood 21 is fixedly connected to the inner wall of the housing 1. An air inlet pipe 22 that communicates with the bottom of the air guide hood 21 is fixedly connected to it. The left end of the air inlet pipe 22 passes through the housing 1 and extends to its outside. A reinforcing block is fixedly connected to the surface of the air inlet pipe 22. The bottom of the reinforcing block is fixedly connected to the bottom of the inner wall of the housing 1. By setting the reinforcing block, the stability of the air inlet pipe 22 during use is improved.

[0023] It also includes a fixed shell 5, which is installed on the right side of the shell 1. A second filter screen 6 is provided inside the fixed shell 5. The surface of the second filter screen 6 is in contact with the inner wall of the fixed shell 5. The first filter screen 4 is a coarse activated carbon filter screen, and the second filter screen 6 is a fine activated carbon filter screen. A first connecting block 7 is fixedly connected to the left side of the first filter screen 4. The left side of the first connecting block 7 penetrates the shell 1 and extends to its outside. A second connecting block 8 is fixedly connected to the right side of the second filter screen 6. The right side of the second connecting block 8 penetrates the fixed shell 5 and extends to its outside. Sealing plates 9 are fixedly connected to the left side of the first connecting block 7 and the right side of the second connecting block 8. The sealing plate 9 on the left side, with the side closer to the shell 1, is in contact with the shell 1. The sealing plate 9 on the right side, with the side closer to the fixed shell 5, is in contact with the fixed shell 5.

[0024] Furthermore, a controller is fixedly connected to the left side of the housing 1, a drain pipe connected to the controller is fixedly connected to the bottom right side of the housing 5, a valve is installed on the drain pipe, and a water inlet pipe connected to the controller is fixedly connected to the back of the housing 5.

[0025] Furthermore, both the left side of the housing 1 and the right side of the fixed housing 5 are provided with sliding grooves 23. The top and bottom of the inner wall of the sliding groove 23 are fixedly connected by a sliding rod 24. A slider 25 is slidably connected to the surface of the sliding rod 24. A buffer spring 26 is sleeved on the surface of the sliding rod 24. A limiting plate 27 is fixedly connected to the slider 25. The side of the limiting plate 27 near the sealing plate 9 is in contact with the sealing plate 9. By setting the sliding groove 23, sliding rod 24, slider 25, buffer spring 26 and limiting plate 27, the stability of the first filter screen 4 in the housing 1 and the stability of the second filter screen 6 in the fixed housing 5 are improved. At the same time, it is convenient to disassemble the first filter screen 4 and the second filter screen 6 for cleaning and maintenance in the future.

[0026] Furthermore, a first top block 28 is fixedly connected to both the left and right sides of the inner wall of the housing 1 and to the bottom of the first filter screen 4. The top of the first top block 28 is in contact with the bottom of the first filter screen 4. A second top block 29 is fixedly connected to both the left and right sides of the inner wall of the fixed housing 5 and to the bottom of the second filter screen 6. The top of the second top block 29 is in contact with the bottom of the second filter screen 6. By setting the first top block 28, the stability of the first filter screen 4 in the housing 1 is improved. By setting the second top block 29, the stability of the second filter screen 6 in the fixed housing 5 is improved.

[0027] Specifically, pulling down the limiting plate 27 causes the slider 25 to press down on the buffer spring 26, causing the limiting plate 27 and the sealing plate 9 to separate. Then, pulling the sealing plate 9 causes the sealing plate 9 on the left to pull the first filter screen 4 out of the housing 1, and the sealing plate 9 on the right to pull the second filter screen 6 out of the fixed housing 5.

[0028] A partition 10 is fixedly connected to the inner wall of the fixed shell 5. An air pump 11 is fixedly connected to the bottom of the fixed shell 5. A first heat conduction pipe 12 is fixedly connected to the top of the air pump 11. The top end of the first heat conduction pipe 12 passes through the fixed shell 5 and the partition 10 from bottom to top and extends to the outside of the partition 10.

[0029] High-voltage electrodes 13 are fixedly connected to both sides of the inner wall of the dust collector 2. A dust collection plate 14 is provided inside the dust collector 2. The bottom of the dust collection plate 14 is fixedly connected to the bottom of the inner wall of the dust collector 2 through two support legs. The front of the dust collector 2 penetrates the shell 1 and extends to its outside. An inspection door is movably connected to the front of the dust collector 2 through a hinge. Opening the inspection door closes the high-voltage electrodes 13, thereby facilitating the treatment of the dust adsorbed on the dust collection plate 14.

[0030] A suction pump 15 is fixedly connected to the bottom of the heating shell 3. The bottom of the suction pump 15 is connected to the dust removal shell 2 through a transmission pipe. The bottom of the dust removal shell 2 is fixedly connected to an installation pipe that is connected to it. A connecting pipe 16 that is connected to the right side of the suction pump 15 is fixedly connected to it. A second heat conduction pipe 17 is fixedly connected to the top of the connecting pipe 16. The end of the second heat conduction pipe 17 away from the connecting pipe 16 passes through the heating shell 3 and extends into it. A fixing pipe 18 is fixedly connected to the end of the second heat conduction pipe 17 away from the connecting pipe 16. The second heat conduction pipe 17 has a high temperature resistance effect. The end of the fixing pipe 18 away from the second heat conduction pipe 17 passes through the heating shell 3, the shell 1 and the fixing shell 5 in sequence and extends into the interior of the fixing shell 5. Heating plates 19 are fixedly connected to the top and bottom of the inner wall of the heating shell 3. A temperature sensor 20 is fixedly connected to the left side of the bottom of the inner wall of the heating shell 3. By setting the temperature sensor 20, the temperature inside the heating shell 3 can be easily sensed, avoiding the effect of descorching due to the low temperature inside the heating shell 3.

[0031] Specifically, the air pump 11, high-voltage electrode 13, suction pump 15, heating plate 19 and temperature sensor 20 are electrically connected to the controller.

[0032] By cooperating with each other, including the dust collector shell 2, heating shell 3, first filter screen 4, second filter screen 6, high-voltage electrode 13, dust collection plate 14, air pump 15, connecting pipe 16, second heat conduction pipe 17, fixed pipe 18, and heating plate 19, the effect of electric dust removal and tar removal of flue gas is achieved. This effectively removes dust and tar from the flue gas. Dust removal is performed through a high-voltage electric field, and tar removal is performed through high-temperature heating. Then, two filter screens are used for auxiliary dust removal and tar removal to prevent the flue gas from containing dust and tar when it is discharged to the outside. By setting the first heat conduction pipe 12, it is convenient to recover and utilize the heat of the gas after high-temperature tar removal, avoiding the waste of heat energy and improving practicality.

[0033] During use, the flue gas enters the air guide hood 21 through the air inlet pipe 22. At the same time, the suction pump 15 is started, which creates a negative pressure inside the dust collector shell 2. This causes the mounting pipe on the dust collector shell 2 to generate suction, allowing the flue gas to pass through the first filter screen 4, achieving a preliminary filtration effect of dust and tar. Simultaneously, the high-voltage electrode 13 is turned on, which generates a high-voltage electric field inside the dust collector shell 2. Under the action of the high-voltage electric field, the dust particles gain an electric charge and become charged particles. Under the action of the electric field force, the charged particles move towards the dust collection plate 14 and are adsorbed onto the dust collection plate 14. The suction pump 15 discharges the dust-removed gas into the heating shell 3. At this time, the temperature inside the heating shell 3 has been heated to 400 degrees by the heating plate 19. The suction pump 15 transfers the gas to the second heat conduction pipe 17 through the connecting pipe 16, causing the tar in the gas in the second heat conduction pipe 17 to be decomposed into gas, and then enters the fixed shell 5 through the fixed pipe 18.

[0034] The gas is filtered again by the second filter screen 6 to remove residual dust and tar. At the same time, the vacuum pump 11 is started so that the filtered high-temperature gas enters the water inside the fixed shell 5. The water recovers the heat from the gas and the heated water is convenient for subsequent use. Finally, the gas is discharged to the outside through the vacuum pump 11.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas treatment device having a heat recovery structure, characterized by: The utility model provides a dust removal device, including the shell (1) and install inside dust removal shell (2) of shell (1) can be dusted, install the heating shell (3) that can be de -coking on the inner wall of shell (1), the inside of shell (1) is provided with the first filter screen (4) of pluggable.

2. The flue gas treatment device having a heat recovery structure according to claim 1, characterized by: Also including fixed shell (5), fixed shell (5) installs at the right side of shell (1), the inside of fixed shell (5) is provided with second filter screen (6), the left side of first filter screen (4) is installed with first connecting block (7), the left side of first connecting block (7) penetrates shell (1) and extends to its outside, the right side of second filter screen (6) is installed with second connecting block (8), the right side of second connecting block (8) penetrates fixed shell (5) and extends to its outside, the left side of first connecting block (7) and the right side of second connecting block (8) are all installed with sealing plate (9).

3. The flue gas treatment device having a heat recovery structure according to claim 2, characterized by: The inner wall of fixed shell (5) is installed with baffle (10), the bottom of fixed shell (5) is installed with air suction pump (11), the top of air suction pump (11) is installed with first heat pipe (12), the top end of first heat pipe (12) penetrates fixed shell (5) and baffle (10) from below to above and extends to the outside of baffle (10).

4. The flue gas treatment device having a heat recovery structure according to claim 3, characterized by: The left side and the right side of the inner wall of dust removal shell (2) are both installed with high voltage electrode (13), the inside of dust removal shell (2) is provided with dust collecting plate (14), the bottom of dust collecting plate (14) is fixedly connected with the bottom of the inner wall of dust removal shell (2) through two supporting legs, the front of dust removal shell (2) penetrates shell (1) and extends to its outside.

5. The flue gas treatment device having a heat recovery structure according to claim 4, characterized by: The bottom of heating shell (3) is installed with air suction pump (15), the right side of air suction pump (15) is installed with connecting pipe (16) in intercommunication with it, the top end of connecting pipe (16) is installed with second heat pipe (17), the end of second heat pipe (17) away from connecting pipe (16) penetrates heating shell (3) and extends to its inside.

6. The flue gas treatment device having a heat recovery structure according to claim 5, characterized by: The end of second heat pipe (17) away from connecting pipe (16) is installed with fixed pipe (18), the end of fixed pipe (18) away from second heat pipe (17) penetrates heating shell (3), shell (1) and fixed shell (5) in proper order and extends to the inside of fixed shell (5), the top and the bottom of the inner wall of heating shell (3) are both installed with heating plate (19), the left side of the bottom of the inner wall of heating shell (3) is installed with temperature sensor (20).

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