CN117101315B - High-temperature flue gas treatment equipment for centrifugal cooling and dust removal - Google Patents
High-temperature flue gas treatment equipment for centrifugal cooling and dust removal Download PDFInfo
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- CN117101315B CN117101315B CN202310903371.XA CN202310903371A CN117101315B CN 117101315 B CN117101315 B CN 117101315B CN 202310903371 A CN202310903371 A CN 202310903371A CN 117101315 B CN117101315 B CN 117101315B
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- shell
- air
- flue gas
- annular
- air cavity
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- 239000003546 flue gas Substances 0.000 title claims abstract description 108
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000000428 dust Substances 0.000 title claims abstract description 83
- 238000001816 cooling Methods 0.000 title claims abstract description 18
- 238000007790 scraping Methods 0.000 claims abstract description 31
- 238000005192 partition Methods 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 22
- 239000000779 smoke Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 22
- 230000009471 action Effects 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 210000003437 trachea Anatomy 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention belongs to the technical field of high-temperature flue gas treatment, and particularly relates to high-temperature flue gas treatment equipment for centrifugal cooling and dust removal, which comprises a shell, a motor, a plate-fin heat exchanger, a fan assembly, a blade assembly and a scraping ring, wherein the shell consists of an inner shell and an outer shell, square openings which are uniformly distributed are formed in the inner wall surface of the inner shell, the motor is arranged on the upper end surface of the inner shell, the fan assembly is arranged in the inner shell, the square openings which are uniformly distributed are formed in the inner wall surface of the inner shell, four inclined surfaces which extend outwards and obliquely are formed in one side of each square opening, which faces the center of the inner shell, and two inclined surfaces which are mutually connected between two adjacent square openings form a sharp angle shape; the area can not appear in the internal face of this kind of design can guarantee on the internal face of inner shell, if still there is the area on the internal face of inner shell between the adjacent square mouth, will lead to the dust that carries in the flue gas to pile up in a large number in the area department on the internal face of inner shell, influences the filter effect to the dust in the flue gas.
Description
Technical Field
The invention belongs to the technical field of high-temperature flue gas treatment, and particularly relates to high-temperature flue gas treatment equipment for centrifugal cooling and dust removal.
Background
The high-temperature flue gas has high temperature, contains harmful gas and dust, and is difficult to recover heat, and because the flue gas contains more dust, the common heat exchanger needs to be cleaned frequently, or is easy to block; the use is inconvenient.
Dust in the high-temperature flue gas is generally treated by a filter bag, in order to prevent the filter belt from being burnt out by the flue gas, a cooling measure is generally added in front of the filter belt, a large amount of cold air or water mist is used for cooling, the process consumes more gas or water, and the temperature of the cooled flue gas is reduced to ensure that the heat of the flue gas cannot be used any more, so that a large amount of heat is lost.
The invention designs the flue gas treatment equipment for realizing dust removal under the condition that high-temperature flue gas is not cooled, and simultaneously, the high-efficiency plate-fin heat exchanger is utilized for heat recovery after the temperature is reduced, so that the flue gas treatment equipment has higher economic benefit.
Disclosure of Invention
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the high-temperature flue gas treatment equipment comprises a shell, a motor, a plate-fin heat exchanger, a fan assembly, a blade assembly and a scraping ring, wherein the shell consists of an inner shell and an outer shell, square openings which are uniformly distributed are formed in the inner wall surface of the inner shell, spiral sheets are fixedly arranged on the inner wall surface of the inner shell, and spiral grooves are formed between the spiral sheets and the inner wall of the inner shell; a motor is fixedly arranged on the upper end surface of the inner shell, a fan assembly is arranged in the inner shell, and an output shaft of the motor is in transmission connection with the fan assembly; the fan assembly is composed of a plurality of blade assemblies which are uniformly distributed from top to bottom.
The outer shell is fixedly arranged on the outer side of the inner shell, an annular partition plate with a W-shaped cross section is fixedly arranged in the outer shell, and an annular filter screen is fixedly arranged on one side, far away from the inner shell, of the annular partition plate in the outer shell; the annular partition plate and the filter screen divide the inner space of the shell into a second air cavity, a fourth air cavity and a third air cavity; the annular partition plate is provided with an air port communicated with the second air cavity and the fourth air cavity; the second air cavity is externally connected with a cold air pump; a plurality of sector elastic baffles are uniformly arranged at the lower position in the fourth air cavity in the circumferential direction, the elastic baffles divide the fourth air cavity into an upper part and a lower part, a dust collecting cavity is formed at the lower part, a dust discharge port is formed on the side wall of the dust collecting cavity, which is close to the outer side, and an annular door is slidably arranged at the dust discharge port; the cross section of the third air cavity is horn-shaped, and a plurality of second exhaust ports are uniformly circumferentially arranged on the wall surface of the outer side of the third air cavity.
And an annular scraping ring is slidably arranged in the fourth air cavity and matched with the filter screen.
The lower side of the shell is provided with a plate-fin heat exchanger, and the upper end of the plate-fin heat exchanger is connected with the air outlet at the lower end of the shell.
As a preferable scheme, the shell is detachably arranged on the upper sides of three first supports which are uniformly distributed in the circumferential direction; the upper end of the inner shell is provided with a first air inlet in an arc shape, and the lower end of the inner shell is provided with an air outlet; an external hose is detachably arranged on the first air inlet and is connected with high-temperature flue gas discharge equipment.
As a preferable scheme, one side of each square opening facing the center of the inner shell is provided with four inclined planes extending outwards and obliquely, and two inclined planes which are mutually intersected between two adjacent square openings form a sharp angle.
As a preferable scheme, the lower end of the installation rotating shaft is rotatably installed in the inner shell, and the upper end of the installation rotating shaft vertically penetrates out of the first air inlet upwards; a motor is fixedly arranged on the upper end surface of the inner shell, and an output shaft of the motor is in transmission connection with the upper end of the installation rotating shaft through a gear set; the blade assembly comprises a mounting sleeve and blades, the mounting sleeve is fixedly mounted on a mounting rotating shaft, and a plurality of blades are uniformly and fixedly mounted on the outer circular surface of the mounting sleeve in the circumferential direction.
As a preferable scheme, the second air cavity is close to the inner shell, the fourth air cavity is positioned between the second air cavity and the third air cavity, the concave area of the annular partition plate is positioned in the fourth air cavity, and the cross section of the annular partition plate positioned at one side in the second air cavity is horn-shaped; the lower side of the shell is provided with a second annular shell, a plurality of guide sleeves which are uniformly distributed are fixedly arranged between the second annular shell and the shell, and an air flow channel is connected between the second annular shell and the second air cavity; the upper side of the shell is fixedly provided with a first annular shell, the upper end of the first annular shell is circumferentially and uniformly provided with a plurality of second air inlets, and the second air inlets are connected with an external cold air pump after being combined through a hose; the lower end of the first annular shell is circumferentially and uniformly provided with a plurality of hollow air pipes, and the lower ends of the hollow air pipes penetrate through the shell and an annular partition plate in the shell to be connected with the second annular shell at the lower side; the hollow air pipes are in one-to-one correspondence with the guide sleeves, and the lower ends of the hollow air pipes penetrate through the corresponding guide sleeves and are communicated with the inside of the second annular shell.
The upper side of shell is through circumference evenly distributed's fixed plate fixed mounting has a backup pad of annular, and circumference even fixed mounting has a plurality of second electric putter in the backup pad, and second electric putter's output and the upper end fixed connection of first annular shell.
As a preferable scheme, a V-shaped groove is formed in one side, fixed with the inner wall surface of the fourth air cavity, of the elastic baffle plate.
As a preferable scheme, an annular mounting plate is fixedly arranged at the upper end of the annular door, and a plurality of first guide rods are uniformly and fixedly arranged between the mounting plate and the lower end of the shell in the circumferential direction; the first guide rod is a telescopic rod, a plurality of first electric push rods are uniformly and fixedly installed on the outer side wall of the shell in the circumferential direction, and the lower ends of the first electric push rods are fixedly connected with the mounting plate.
As an optimal scheme, a plurality of second guide rods are uniformly and fixedly arranged on the supporting plate in the circumferential direction, and the second guide rods are fixedly connected with the scraping ring to guide the scraping ring; a plurality of third electric push rods are uniformly and fixedly installed on the supporting plate in the circumferential direction, and the output ends of the third electric push rods are fixedly connected with the scraping ring.
As a preferable scheme, the plate-fin heat exchangers are arranged on a plurality of second supports which are uniformly distributed in the circumferential direction; the upper end of the plate-fin heat exchanger is connected with the air outlet at the lower end of the shell; the lower end of the plate-fin heat exchanger is provided with a first exhaust port; the plate-fin heat exchanger is provided with two heat exchanger air ports.
As a preferable scheme, a plurality of evenly distributed grooves are formed in the back face of each blade, the inner bottom face of each groove is an arc face, and the depth of each groove gradually becomes shallow outwards from one end close to the mounting sleeve.
Compared with the prior art, the invention has the advantages that:
1. the inner wall surface of the inner shell is provided with square openings which are uniformly distributed, one side of each square opening facing the center of the inner shell is provided with four inclined planes which extend outwards and obliquely, and two inclined planes which are mutually connected between two adjacent square openings form a sharp angle; the area can not appear in the internal face of this kind of design can guarantee on the internal face of inner shell, if still there is the area on the internal face of inner shell between the adjacent square mouth, will lead to the dust that carries in the flue gas to pile up in a large number in the area department on the internal face of inner shell, influences the filter effect to the dust in the flue gas.
2. Because the invention can input cold air into the second air cavity in the outer shell in the filtering process, the air pressure of the cold air in the second air cavity is ensured to be basically equal to the air pressure of the smoke in the inner shell or the air pressure of the cold air is slightly larger than the air pressure of the smoke; when the air pressure of the cold air in the second air cavity is basically equal to the air pressure of the smoke in the inner shell, the smoke in the inner shell and the cold air in the second air cavity of the outer shell form a stable state at the square opening, so that the smoke in the inner shell basically does not flow into the outer shell under the condition that dust smoothly enters the outer shell from the square opening, and meanwhile, the cold air in the outer shell basically does not flow into the inner shell to reduce the temperature of the smoke; even if the air pressure is unstable, a small amount of cold gas enters the smoke or a small amount of smoke enters the cold air, and the cold gas enters the smoke to reduce the temperature of the smoke, but the cold gas can be basically ignored because of the small amount; the flue gas enters the second air cavity, and the filter screen is not burnt out by the entering flue gas because a large amount of cold gas exists in the second air cavity; when the air pressure of the cold gas is slightly larger than that of the flue gas, a small amount of cold gas enters the flue gas, and the temperature of the flue gas is reduced, but the amount of the cold gas entering is relatively small, so that the heat loss of the flue gas is relatively small and can be basically ignored; through the design, the flue gas can be guaranteed to have higher heat recovery efficiency.
3. The back of the blade is provided with a plurality of uniformly distributed grooves, the inner bottom surface of each groove is an arc surface, and the depth of each groove gradually becomes shallow from one end close to the mounting sleeve; in the process of treating the flue gas, the rotating blades can drive the flue gas to flow downwards, the flue gas flows to drive dust carried by the flue gas to flow, the rotating speed of the blades is greater than the speed of the flue gas driven to flow because the flue gas is driven to flow by the rotating blades in the normal process, after the dust falls into the grooves formed in the blades in the process of driving the dust to flow by the flue gas, the dust can stay longer on the blades under the action of the grooves than the condition without the grooves, so that a great speed can be obtained, and the dust can fly out easily under centrifugal force after the speed is reached.
4. According to the invention, dust flowing into the second air cavity is cooled by cool air input into the second air cavity, so that the filter screen is not burnt in the process of being filtered by the filter screen; the filter screen is protected; in addition, because the flue gas basically cannot flow into the second air cavity, the waste of heat in the flue gas is avoided; the filter structure designed by the invention can ensure that the filter screen is not burnt out, and can also efficiently recover the heat in the flue gas.
Drawings
Fig. 1 is a schematic view of the overall component appearance.
Fig. 2 is a schematic diagram of the overall component distribution.
Fig. 3 is a schematic view of the external appearance of a plate fin heat exchanger.
Fig. 4 is a schematic view of the appearance of the housing.
Fig. 5 is a schematic view of the internal structure of the housing.
Fig. 6 is a schematic diagram of a first gas chamber distribution.
FIG. 7 is a schematic view of a W-shaped separator distribution.
Fig. 8 is a schematic diagram of square port distribution.
Fig. 9 is a schematic view of an annular shell installation.
Figure 10 is a schematic illustration of the connection of a hollow trachea to a first lumen.
Fig. 11 is a schematic view of a toroidal door installation.
Fig. 12 is a schematic view of the distribution of elastic baffles.
Fig. 13 is a schematic view of the structure of the elastic baffle.
Fig. 14 is a schematic view of the annular shell structure.
FIG. 15 is a schematic diagram of a gear set installation.
Fig. 16 is a schematic view of a fan assembly.
FIG. 17 is a schematic view of a vane assembly.
Fig. 18 is a schematic view of a blade structure.
Fig. 19 is a view showing the wiper ring installation intention.
Fig. 20 is a schematic view of a wiper drive.
Reference numerals in the figures: 1. a housing; 2. a motor; 3. externally connecting a hose; 4. a first support; 5. a plate-fin heat exchanger; 6. a fan assembly; 7. an air port of the heat exchanger; 8. a second support; 9. a first exhaust port; 10. a first air inlet; 11. a second exhaust port; 12. a filter screen; 13. a housing; 14. a spiral sheet; 15. an inner case; 16. an air outlet; 17. a second annular shell; 18. a dust collection chamber; 19. an annular partition plate; 20. a second air chamber; 21. an air flow channel; 23. a guide sleeve; 24. a third air chamber; 25. a square mouth; 26. an inclined plane; 27. a first annular shell; 28. a hollow air tube; 29. a ring-shaped door; 30. an elastic baffle; 31. a mounting plate; 32. a first electric push rod; 33. a first guide bar; 34. a V-shaped groove; 35. a support plate; 36. a second electric push rod; 37. a second air inlet; 38. a gear set; 39. installing a rotating shaft; 40. a blade assembly; 41. a blade; 42. a mounting sleeve; 43. a groove; 44. a fixing plate; 45. a scraping ring; 46. a third electric push rod; 47. a second guide bar; 48. a fourth air chamber; 49. a dust discharge port; 50. and an air port.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples or figures are illustrative of the invention and are not intended to limit the scope of the invention.
The high-temperature flue gas treatment equipment for centrifugal cooling and dust removal comprises a shell 1, a motor 2, a first support 4, a plate-fin heat exchanger 5, a fan assembly 6, a first electric push rod 32, a second electric push rod 36, a gear set 38, a mounting rotating shaft 39, a blade assembly 40, a scraping ring 45 and a third electric push rod 46, wherein the shell 1 is detachably arranged on the upper sides of the three first supports 4 which are uniformly distributed in the circumferential direction; as shown in fig. 4 and 5, the housing 1 is composed of an inner housing 15 and an outer housing 13, as shown in fig. 5 and 8, square openings 25 are uniformly distributed on the inner wall surface of the inner housing 15, one side of each square opening 25 facing the center of the inner housing 15 is provided with four inclined surfaces 26 extending outwards and obliquely, and two inclined surfaces 26 connected with each other between adjacent square openings 25 form a sharp angle; as shown in fig. 5, the inner wall surface of the inner shell 15 is fixedly provided with a spiral sheet 14, and a spiral groove is formed between the spiral sheet 14 and the inner wall of the inner shell 15; the upper end of the inner shell 15 is provided with a first air inlet 10 in an arc shape, and the lower end of the inner shell 15 is provided with an air outlet 16; an external hose 3 is detachably arranged on the first air inlet 10, and the external hose 3 is connected with high-temperature flue gas discharge equipment; as shown in fig. 16, the lower end of the installation rotating shaft 39 is rotatably installed in the inner case 15, and the upper end of the installation rotating shaft 39 vertically passes through the first air inlet 10 upward; the upper end face of the inner shell 15 is fixedly provided with a motor 2, and an output shaft of the motor 2 is in transmission connection with the upper end of a mounting rotating shaft 39 through a gear set 38; a fan assembly 6 is installed in the inner shell 15, and the fan assembly 6 is composed of a plurality of blade assemblies 40 which are uniformly distributed from top to bottom; as shown in fig. 17, the blade assembly 40 includes a mounting sleeve 42 and blades 41, the mounting sleeve 42 is fixedly mounted on the mounting shaft 39, a plurality of blades 41 are uniformly and fixedly mounted on the outer circumferential surface of the mounting sleeve 42, the blades 41 are in an arc-shaped sheet structure, a plurality of uniformly distributed grooves 43 are formed in the back surface of each blade 41, as shown in fig. 18, the inner bottom surface of each groove 43 is a cambered surface, and the depth of each groove 43 gradually becomes shallow from one end close to the mounting sleeve 42 to the outside.
In the invention, square openings 25 are uniformly distributed on the inner wall surface of an inner shell 15, one side of each square opening 25 facing the center of the inner shell 15 is provided with four inclined planes 26 extending outwards in an inclined manner, and two inclined planes 26 which are mutually connected between adjacent square openings 25 form a sharp angle; such design can guarantee can not appear the area on the internal face of inner shell 15, if still there is the area on the internal face of inner shell 15 between the adjacent square mouth 25, will lead to the dust that carries in the flue gas to pile up in a large number in the area department on the internal face of inner shell 15, influences the filter effect to the dust in the flue gas.
The spiral sheets 14 are arranged on the inner wall surface of the inner shell 15, a spiral groove is formed on the inner wall surface of the inner shell 15 through the arrangement of the spiral sheets 14, the spiral groove is matched with the fan assembly 6 to guide the flue gas entering the inner shell 15 to flow downwards along the spiral groove, the flue gas is easy to clamp in the spiral groove to flow downwards, and more dust in the flue gas can be contacted with the inner wall surface of the inner shell 15; the flue gas flows downwards along the spiral groove to drive dust carried by the flue gas to flow downwards along the spiral groove, and the dust is subjected to outward centrifugal force applied to the flue gas by the fan assembly 6 in the flowing process, and enters the shell 13 from the square opening 25 under the action of the centrifugal force; because the invention can input cold air into the second air cavity 20 in the outer shell 13 in the filtering process, and ensure that the air pressure of the cold air in the second air cavity 20 is basically equal to the air pressure of the smoke in the inner shell 15 or the air pressure of the cold air is slightly larger than the air pressure of the smoke; when the air pressure of the cold air in the second air cavity 20 is basically equal to the air pressure of the flue gas in the inner shell 15, the flue gas in the inner shell 15 and the cold air in the second air cavity 20 of the outer shell 13 form a stable state at the square opening 25, so that the flue gas in the inner shell 15 basically does not flow into the outer shell 13 under the condition that dust smoothly enters the outer shell 13 from the square opening 25, and meanwhile, the cold air in the outer shell 13 basically does not flow into the inner shell 15 to reduce the temperature of the flue gas; even if the air pressure is unstable, a small amount of cold gas enters the smoke or a small amount of smoke enters the cold air, and the cold gas enters the smoke to reduce the temperature of the smoke, but the cold gas can be basically ignored because of the small amount; the flue gas enters the second air cavity 20, and because a large amount of cold air exists in the second air cavity 20, the entering flue gas cannot burn out the filter screen 12; when the air pressure of the cold gas is slightly larger than that of the flue gas, a small amount of cold gas enters the flue gas, and the temperature of the flue gas is reduced, but the amount of the cold gas entering is relatively small, so that the heat loss of the flue gas is relatively small and can be basically ignored; through the design, the flue gas can be guaranteed to have higher heat recovery efficiency.
The high-temperature flue gas flows downwards under the action of the fan assembly 6 and the spiral groove after entering the inner shell 15 from the first air inlet 10, dust carried in the flue gas in the flowing process is discharged into the outer shell 13, and clean high-temperature flue gas flows into the plate-fin heat exchanger 5 from the air outlet 16 at the lower end of the inner shell 15, so that heat of the flue gas is recycled.
The motor 2 can drive the installation rotating shaft 39 to rotate through the gear set 38, the installation rotating shaft 39 rotates to drive the installation sleeve 42 to rotate, and the installation sleeve 42 rotates to drive the blades 41 arranged on the installation sleeve to rotate; in the invention, the blades 41 are arc-shaped, the back surfaces of the blades 41 face to one side of the spiral groove which is spirally downward, and the design can ensure that the flue gas smoothly flows into the spiral groove and downwards along the spiral groove under the blowing of the rotating blades 41.
The back of the blade 41 is provided with a plurality of uniformly distributed grooves 43, the inner bottom surface of each groove 43 is a cambered surface, and the depth of each groove 43 gradually becomes shallow from one end close to the mounting sleeve 42; in the process of treating the flue gas, the rotating blades 41 can drive the flue gas to flow downwards, the flue gas flows to drive dust carried by the flue gas to flow, in the normal process, the flue gas is driven to flow by the rotating blades 41, the rotating speed of the blades 41 is higher than the speed of the flue gas driven to flow, in the process of driving the dust to flow by the flue gas, after the dust falls into the grooves 43 formed in the blades 41, the dust can stay on the blades 41 for a longer time under the action of the grooves 43 than under the condition without the grooves 43, so that a very high speed can be obtained, and the dust can fly out easily under the centrifugal force after the speed reaches.
As shown in fig. 5, 6 and 7, the outer shell 13 is fixedly installed at the outer side of the inner shell 15, an annular partition plate 19 with a W-shaped cross section is fixedly installed in the outer shell 13, and a ring-shaped filter screen 12 is fixedly installed at one side of the annular partition plate 19 far away from the inner shell 15 in the outer shell 13; the annular partition plate 19 and the filter screen 12 divide the inner space of the shell 13 into a second air cavity 20, a fourth air cavity 48 and a third air cavity 24; the second air cavity 20 is close to the inner shell 15, the fourth air cavity 48 is positioned between the second air cavity 20 and the third air cavity 24, the concave area of the annular partition plate 19 is positioned in the fourth air cavity 48, and the cross section of the annular partition plate 19 positioned on one side of the second air cavity 20 is horn-shaped; the annular partition plate 19 is provided with an air port 50 communicated with the second air cavity 20 and the fourth air cavity 48; the lower side of the shell 13 is provided with a second annular shell 17, a plurality of guide sleeves 23 which are uniformly distributed are fixedly arranged between the second annular shell 17 and the shell 13, and an air flow channel 21 is connected between the second annular shell and a second air cavity 20; as shown in fig. 9, a first annular shell 27 is fixedly installed on the upper side of the housing 13, a plurality of second air inlets 37 are uniformly formed in the circumferential direction at the upper end of the first annular shell 27, and the second air inlets 37 are combined through a hose and then connected with an external cold air pump; the lower end of the first annular shell 27 is uniformly and fixedly provided with a plurality of hollow air pipes 28 in the circumferential direction, and the lower ends of the hollow air pipes 28 penetrate through the outer shell 13 and the annular partition plate 19 in the outer shell 13 to be connected with the second annular shell 17 at the lower side; the hollow air pipes 28 are in one-to-one correspondence with the guide sleeves 23, and the lower ends of the hollow air pipes 28 penetrate through the corresponding guide sleeves 23 and are communicated with the inside of the second annular shell 17; as shown in fig. 14, a ring-shaped supporting plate 35 is fixedly mounted on the upper side of the housing 13 through a fixing plate 44 uniformly distributed in the circumferential direction, a plurality of second electric push rods 36 are uniformly and fixedly mounted on the supporting plate 35 in the circumferential direction, and the output ends of the second electric push rods 36 are fixedly connected with the upper end of the first annular shell 27; as shown in fig. 10 and 12, a plurality of sector-shaped elastic baffles 30 are uniformly circumferentially arranged at the lower position in the fourth air cavity 48, and as shown in fig. 13, a V-shaped groove 34 is formed on one side, fixed with the inner wall surface of the fourth air cavity 48, of the elastic baffles 30; as shown in fig. 10 and 12, the elastic baffle 30 divides the fourth air chamber 48 into an upper part and a lower part, the part positioned at the lower side forms the dust collecting chamber 18, a dust discharge opening 49 is arranged on the side wall of the dust collecting chamber 18, and the annular door 29 is slidingly arranged at the dust discharge opening 49; a ring-shaped mounting plate 31 is fixedly arranged at the upper end of the ring-shaped door 29, and a plurality of first guide rods 33 are uniformly and fixedly arranged between the mounting plate 31 and the lower end of the shell 13 in the circumferential direction; the first guide rod 33 is a telescopic rod, a plurality of first electric push rods 32 are uniformly and fixedly installed on the outer side wall of the housing 13 in the circumferential direction, and the lower ends of the first electric push rods 32 are fixedly connected with the mounting plate 31.
The first electric push rod 32 can control the opening and closing of the annular door 29, so that dust in the dust collecting cavity 18 can be cleaned conveniently.
After the air blown by the cold air pump enters the first annular shell 27 from the second air inlet 37, the cold air enters the second annular shell 17 body 1 along the hollow air pipe 28, the air entering the second annular shell 17 body 1 enters the second air cavity 20 along the air flow channel 21, the air entering the second air cavity 20 can cool dust entering the second air cavity 20 from the square opening 25, meanwhile, the air entering the second air cavity 20 can flow into the fourth air cavity 48 with the dust from the air opening 50 formed in the annular partition 19, the dust is filtered on the filter screen 12 under the action of the filter screen 12 in the fourth air cavity 48, the filtered air flows into the third air cavity 24, and finally the filtered air is discharged from the second air outlet 11 formed in the third air cavity 24. In the invention, dust flowing into the second air cavity 20 is cooled by cold air input into the second air cavity 20, so that the filter screen 12 is not burnt out in the process of being filtered by the filter screen 12; the filter screen 12 is protected; in addition, because the flue gas basically does not flow into the second air cavity 20, the waste of heat in the flue gas is avoided; the filter structure designed by the invention can ensure that the filter screen 12 is not burnt out, and can also efficiently recover the heat in the flue gas.
In the invention, in the process of cooling dust by cold air in the second air cavity 20, the dust flows into the fourth air cavity 48 along with the cold air in the second air cavity 20, in the process, the dust can be stuck on a hollow pipe, after the filtering and cooling effects are found to be poor in a period of use, the second electric push rod 36 can be controlled to work, the second electric push rod 36 can pull the first annular shell 27 to move upwards, the first annular shell 27 drives the hollow air pipe 28 to move upwards, and in the process of moving upwards, the annular partition plate 19 can have the function of scraping and cleaning the dust on the hollow air pipe 28; in addition, the upper end of the hollow air pipe 28 cannot be separated from the upper end of the fourth air cavity 48 in cleaning, and even if the hollow air pipe 28 is cleaned in the use process, the cleaning of the smoke gas cannot be influenced normally; in addition, an arc transition area is formed on one side of the annular partition plate 19 facing the second air cavity 20, and the hollow air pipe 28 can be quickly inserted and pulled when cleaned, so that the time is short; through reasonable design and the plug of control hollow trachea 28 can guarantee to dial the back at hollow trachea 28, and the round hole department of interlude hollow trachea 28 also can not appear very big pulsation phenomenon, can not cause too big disturbance to the flow of flue gas, can not influence the normal flow of flue gas.
The guide sleeve 23 is used for ensuring the connection between the hollow air pipe 28 and the second annular shell 17, and the upper end of the second annular shell 17 is not leaked when the hollow air pipe 28 is driven to move upwards. The first guide bar 33 serves to guide the first annular housing 27.
In the invention, the middle annular partition plate 19 is an annular partition plate 19 with a W-shaped cross section, and the W-shaped design can ensure that dust driven by cold air in the second air cavity 20 smoothly flows into the groove 43 on the back surface of the annular partition plate 19, and finally smoothly flows into the fourth air cavity 48 from the air port 50 formed on the annular partition plate 19.
The special shape of the annular partition 19 according to the invention allows on the one hand to increase the flow rate of the cold gas and on the other hand to increase the heat exchange effect of the cold gas and the dust.
As shown in fig. 5, the cross section of the third air chamber 24 is horn-shaped, and a plurality of second exhaust ports 11 are uniformly circumferentially arranged on the wall surface outside the third air chamber 24. The function of the trumpet-shaped cross section is to facilitate the flow of gas.
As shown in fig. 19 and 20, an annular scraping ring 45 is slidably mounted in the fourth air cavity 48, and the scraping ring 45 is matched with the filter screen 12; a plurality of second guide rods 47 are uniformly and fixedly arranged on the supporting plate 35 in the circumferential direction, and the second guide rods 47 are fixedly connected with the scraping ring 45 to guide the scraping ring 45; a plurality of third electric push rods 46 are uniformly and fixedly arranged on the supporting plate 35 in the circumferential direction, and the output ends of the third electric push rods 46 are fixedly connected with the scraping ring 45.
In the invention, the third electric push rod 46 is controlled to work, the third electric push rod 46 can drive the scraping ring 45 to slide, and the scraping ring 45 is used for scraping and cleaning dust on the filter screen 12; when the scraping ring 45 contacts with the elastic baffle 30 during the downward movement of the scraping ring 45, the scraping ring 45 presses the elastic baffle 30 to enable the elastic baffle 30 to swing down, and the upper end of the dust collecting cavity 18 is opened to enable dust to fall into the dust collecting cavity 18. The V-shaped groove 34 on the elastic baffle 30 of the invention is used for facilitating the swing of the elastic baffle 30; after the scraper ring 45 moves to the lowest side, the end surface of the elastic baffle 30 is closely attached to the straight surface of the scraper ring 45, and the reset of the scraper ring 45 is not affected.
As shown in fig. 1 and 2, a plate-fin heat exchanger 5 is installed on the lower side of the shell 1, and the plate-fin heat exchanger 5 is installed on a plurality of second supports 8 which are uniformly distributed in the circumferential direction; the upper end of the plate-fin heat exchanger 5 is connected with an air outlet 16 at the lower end of the shell 1; the lower end of the plate-fin heat exchanger 5 is provided with a first exhaust port 9; the plate fin heat exchanger 5 has two heat exchanger air ports 7 thereon.
The flue gas aimed by the invention can be divided into high-temperature flue gas and ultra-high-temperature flue gas, and the filter screen 12 cannot be burnt out even if the temperature of the high-temperature flue gas is reduced without cold gas, in this case, because no cold gas exists, part of the flue gas can directly enter the second air cavity 20 from the square opening 25, and then is discharged from the fourth air cavity 48 and the third air cavity 24. Cold gas is required to be input into the ultra-high temperature flue gas, and dust is cooled; in which case the flue gases do not substantially enter the second air chamber 20.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Embodiments are described below: when the equipment designed by the invention is used, the motor 2 is controlled to work, the motor 2 can drive the installation rotating shaft 39 to rotate through the gear set 38, the installation rotating shaft 39 rotates to drive the installation sleeve 42 to rotate, and the installation sleeve 42 rotates to drive the blades 41 arranged on the installation sleeve to rotate; simultaneously, the high-temperature flue gas is controlled to enter the inner shell 15 from the first air inlet 10, meanwhile, the refrigerating air pump is controlled to work, after the air blown by the refrigerating air pump enters the first annular shell 27 from the second air inlet 37, the cool air enters the second annular shell 17 body 1 along the hollow air pipe 28, the air entering the second annular shell 17 body 1 enters the second air cavity 20 along the air flow channel 21, and the air pressure of the cool air in the second air cavity 20 and the air pressure of the flue gas in the inner shell 15 are ensured to be basically equal; the high-temperature flue gas entering the inner shell 15 under the action of the fan assembly 6 and the spiral groove flows downwards along the spiral groove, the flue gas flows downwards along the spiral groove and drives dust carried by the flue gas to flow downwards along the spiral groove, the dust is subjected to outward centrifugal force applied to the flue gas by the fan assembly 6 in the flowing process, and the dust enters the outer shell 13 from the square opening 25 and enters the second air cavity 20 under the action of the centrifugal force; the air entering the second air cavity 20 can cool down the dust entering the second air cavity 20 from the square opening 25, meanwhile, the air entering the second air cavity 20 can flow into the fourth air cavity 48 with the dust from the air opening 50 formed in the annular partition 19, the dust is filtered on the filter screen 12 under the action of the filter screen 12 in the fourth air cavity 48, the filtered air flows into the third air cavity 24, and finally is discharged from the second air outlet 11 formed in the third air cavity 24. In the invention, dust flowing into the second air cavity 20 is cooled by cold air input into the second air cavity 20, so that the filter screen 12 is not burnt out in the process of being filtered by the filter screen 12; the discharged clean high-temperature flue gas flows into the plate-fin heat exchanger 5 from the air outlet 16 at the lower end of the inner shell 15, and the heat of the flue gas is recycled.
After the filter effect is found to be poor after the filter is used for a period of time, the third electric push rod 46 is controlled to work, the third electric push rod 46 can drive the scraping ring 45 to slide, and the scraping ring 45 is used for scraping and cleaning dust on the filter screen 12; when the scraping ring 45 contacts with the elastic baffle 30 in the downward movement process of the scraping ring 45, the scraping ring 45 presses the elastic baffle 30 to enable the elastic baffle 30 to swing downwards, and the upper end of the dust collecting cavity 18 is opened to enable dust to fall into the dust collecting cavity 18; meanwhile, the second electric push rod 36 can be controlled to work, the second electric push rod 36 can pull the first annular shell 27 to move upwards, the first annular shell 27 drives the hollow air pipe 28 to move upwards, and in the upward moving process, the annular partition plate 19 can scrape and clean dust on the hollow air pipe 28; the process of cleaning the hollow air tube 28 may also be cleaning in operation.
The flue gas aimed by the invention can be divided into high-temperature flue gas and ultra-high-temperature flue gas, and the filter screen 12 cannot be burnt out even if the temperature of the high-temperature flue gas is reduced without cold gas, in this case, because no cold gas exists, part of the flue gas can directly enter the second air cavity 20 from the square opening 25, and then is discharged from the fourth air cavity 48 and the third air cavity 24. Cold gas is required to be input into the ultra-high temperature flue gas, and dust is cooled; in which case the flue gases do not substantially enter the second air chamber 20.
Claims (9)
1. The utility model provides a high temperature flue gas treatment facility of centrifugation cooling dust removal which characterized in that: the device comprises a shell, a motor, a plate-fin heat exchanger, a fan assembly, a blade assembly and a scraping ring, wherein the shell consists of an inner shell and an outer shell, square openings which are uniformly distributed are formed in the inner wall surface of the inner shell, spiral sheets are fixedly arranged on the inner wall surface of the inner shell, and spiral grooves are formed between the spiral sheets and the inner wall of the inner shell; a motor is fixedly arranged on the upper end surface of the inner shell, a fan assembly is arranged in the inner shell, and an output shaft of the motor is in transmission connection with the fan assembly; the fan assembly is composed of a plurality of blade assemblies which are uniformly distributed from top to bottom;
the outer shell is fixedly arranged on the outer side of the inner shell, an annular partition plate with a W-shaped cross section is fixedly arranged in the outer shell, and an annular filter screen is fixedly arranged on one side, far away from the inner shell, of the annular partition plate in the outer shell; the annular partition plate and the filter screen divide the inner space of the shell into a second air cavity, a fourth air cavity and a third air cavity; the annular partition plate is provided with an air port communicated with the second air cavity and the fourth air cavity; the second air cavity is externally connected with a cold air pump; a plurality of sector elastic baffles are uniformly arranged at the lower position in the fourth air cavity in the circumferential direction, the elastic baffles divide the fourth air cavity into an upper part and a lower part, a dust collecting cavity is formed at the lower part, a dust discharge port is formed on the side wall of the dust collecting cavity, which is close to the outer side, and an annular door is slidably arranged at the dust discharge port; the cross section of the third air cavity is horn-shaped, and a plurality of second exhaust ports are uniformly circumferentially arranged on the wall surface at the outer side of the third air cavity;
an annular scraping ring is slidably arranged in the fourth air cavity and matched with the filter screen;
the lower side of the shell is provided with a plate-fin heat exchanger, and the upper end of the plate-fin heat exchanger is connected with an air outlet at the lower end of the shell;
the second air cavity is close to the inner shell, the fourth air cavity is positioned between the second air cavity and the third air cavity, the concave area of the annular partition plate is positioned in the fourth air cavity, and the cross section of the annular partition plate positioned at one side in the second air cavity is horn-shaped; the lower side of the shell is provided with a second annular shell, a plurality of guide sleeves which are uniformly distributed are fixedly arranged between the second annular shell and the shell, and an air flow channel is connected between the second annular shell and the second air cavity; the upper side of the shell is fixedly provided with a first annular shell, the upper end of the first annular shell is circumferentially and uniformly provided with a plurality of second air inlets, and the second air inlets are connected with an external cold air pump after being combined through a hose; the lower end of the first annular shell is circumferentially and uniformly provided with a plurality of hollow air pipes, and the lower ends of the hollow air pipes penetrate through the shell and an annular partition plate in the shell to be connected with the second annular shell at the lower side; the hollow air pipes are in one-to-one correspondence with the guide sleeves, and the lower ends of the hollow air pipes penetrate through the corresponding guide sleeves and are communicated with the inside of the second annular shell; the air pressure of the cold air in the second air cavity is basically equal to the air pressure of the smoke in the inner shell or the air pressure of the cold air is slightly larger than the air pressure of the smoke;
the upper side of shell is through circumference evenly distributed's fixed plate fixed mounting has a backup pad of annular, and circumference even fixed mounting has a plurality of second electric putter in the backup pad, and second electric putter's output and the upper end fixed connection of first annular shell.
2. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: the shell is detachably arranged on the upper sides of three first supports which are uniformly distributed in the circumferential direction; the upper end of the inner shell is provided with a first air inlet in an arc shape, and the lower end of the inner shell is provided with an air outlet; an external hose is detachably arranged on the first air inlet and is connected with high-temperature flue gas discharge equipment.
3. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: four inclined planes extending outwards and obliquely are formed on one side, facing the center of the inner shell, of each square opening, and two inclined planes which are mutually intersected between two adjacent square openings form a sharp angle.
4. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: the lower end of the installation rotating shaft is rotatably installed in the inner shell, and the upper end of the installation rotating shaft vertically penetrates out of the first air inlet upwards; a motor is fixedly arranged on the upper end surface of the inner shell, and an output shaft of the motor is in transmission connection with the upper end of the installation rotating shaft through a gear set; the blade assembly comprises a mounting sleeve and blades, the mounting sleeve is fixedly mounted on a mounting rotating shaft, and a plurality of blades are uniformly and fixedly mounted on the outer circular surface of the mounting sleeve in the circumferential direction.
5. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: and a V-shaped groove is formed in one side, fixed with the inner wall surface of the fourth air cavity, of the elastic baffle plate.
6. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: the upper end of the annular door is fixedly provided with an annular mounting plate, and a plurality of first guide rods are uniformly and fixedly arranged between the mounting plate and the lower end of the shell in the circumferential direction; the first guide rod is a telescopic rod, a plurality of first electric push rods are uniformly and fixedly installed on the outer side wall of the shell in the circumferential direction, and the lower ends of the first electric push rods are fixedly connected with the mounting plate.
7. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: a plurality of second guide rods are uniformly and fixedly arranged on the supporting plate in the circumferential direction, and the second guide rods are fixedly connected with the scraping ring to guide the scraping ring; a plurality of third electric push rods are uniformly and fixedly installed on the supporting plate in the circumferential direction, and the output ends of the third electric push rods are fixedly connected with the scraping ring.
8. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 1, wherein: the plate-fin heat exchangers are arranged on a plurality of second supports which are uniformly distributed in the circumferential direction; the upper end of the plate-fin heat exchanger is connected with the air outlet at the lower end of the shell; the lower end of the plate-fin heat exchanger is provided with a first exhaust port; the plate-fin heat exchanger is provided with two heat exchanger air ports.
9. The high-temperature flue gas treatment device for centrifugal cooling and dust removal according to claim 4, wherein: the back of each blade is provided with a plurality of evenly distributed grooves, the inner bottom surfaces of the grooves are cambered surfaces, and the depth of each groove gradually becomes shallow outwards from one end close to the mounting sleeve.
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| CN202310903371.XA CN117101315B (en) | 2023-07-22 | 2023-07-22 | High-temperature flue gas treatment equipment for centrifugal cooling and dust removal |
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| CN202310903371.XA CN117101315B (en) | 2023-07-22 | 2023-07-22 | High-temperature flue gas treatment equipment for centrifugal cooling and dust removal |
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| CN117101315A (en) | 2023-11-24 |
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