CN216115610U - Heat exchanger with ash removal function - Google Patents
Heat exchanger with ash removal function Download PDFInfo
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- CN216115610U CN216115610U CN202122261671.1U CN202122261671U CN216115610U CN 216115610 U CN216115610 U CN 216115610U CN 202122261671 U CN202122261671 U CN 202122261671U CN 216115610 U CN216115610 U CN 216115610U
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- blowing pipe
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- exchange assembly
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Abstract
The utility model provides a heat exchanger with a dust cleaning function, which comprises a heat exchange assembly, a dust blowing assembly and a dust blowing pipe, wherein the heat exchange assembly is arranged on the heat exchange assembly; the soot blowing assembly and the soot blowing pipe 7 constitute a rotary soot blower. The soot blowing assembly is arranged above the heat exchange assembly, and the soot blowing pipe can move from a first position to a second position along the height direction of the heat exchange assembly; the first location is within the soot blowing assembly and the second location is within the heat exchange assembly; the soot blowing pipe is provided with one or more soot blowing pipe nozzles, and the outlet direction of the soot blowing pipe nozzles forms a first angle with the axis of the soot blowing pipe. The ash-blowing device adopts a soot-blowing mode, can utilize compressed air to directly contact ash for cleaning, and has more obvious effect. The soot blowing pipe can rotate and can move up and down, the number and the position of the nozzles can be flexibly adjusted according to the size of the heat exchanger, the whole heat exchanger can be swept at all angles, and no dead angle exists.
Description
Technical Field
The utility model relates to the field of carbon fiber waste gas treatment, in particular to a heat exchanger with an ash removal function. In particular to a heat exchanger with an automatic rotary soot blower, which can solve the problem of soot deposition of the existing heat exchanger.
Background
The carbon fiber is a novel functional material and has wide application. The production of carbon fiber needs to be treated by a high-low temperature carbonization furnace, and the carbonization furnace discharges a large amount of waste gas. The waste gas is poor in oxygen, and the main waste gas components are Hydrogen Cyanide (HCN), ammonia (NH3), carbon monoxide (CO), tar, organic silicon particles and the like. At present, the three-section type direct combustion furnace is mostly adopted to treat the waste gas. After the combustion of the three-section type direct combustion furnace, the outlet gas is about 910 ℃, and then enters a heat exchanger for heat exchange, and the heat is recovered. Because the burnt gas contains silicon dioxide (SiO2) dust, the dust is deposited and blocked after entering a general heat exchanger, so that the heat exchange efficiency of the heat exchanger is reduced, the pressure drop is increased, and the heat exchange function of the heat exchanger is influenced.
Because the temperature of the flue gas at the outlet of the direct-fired furnace is very high and reaches about 910 ℃, a dust removal device cannot be added in front of the heat exchanger, and only the heat exchanger can be cleaned. The existing heat exchanger ash removal technology is mostly used in the heat exchanger and adopts the acoustic wave type ash removal technology.
The sound wave ash cleaner uses compressed air as the energy source of sound wave or infrasonic wave, the high-strength titanium metal diaphragm is self-excited and oscillated under the action of compressed air source, and generates resonance in the resonant cavity, the potential energy of compressed air is converted into low-frequency sound energy, the sound energy is transferred to the corresponding ash-depositing point through air medium, so that the sound wave plays a role of 'sound-induced fatigue' to ash slag.
However, in practical application, the acoustic wave ash remover has the following defects:
1. because the sound wave is indirect, the dust cleaning effect is not ideal;
2. the sound wave ash cleaner has great noise and can cause certain damage to people.
Patent document CN2256093Y discloses a sonic ash remover, which comprises a central rod, a nozzle housing and a resonant cavity housing, wherein the central rod and the resonant cavity housing form a resonant cavity, the central rod and the nozzle housing form a nozzle cavity, and the inner wall of the nozzle cavity can be made into a single inner side contracted pipe shape, a single outer side contracted pipe shape, a double side contracted pipe shape or a single inner side contracted pipe shape, a single outer side contracted pipe shape or a double side contracted pipe shape. However, the method still adopts the mode of sound wave to clean the ash and still has the defects.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a heat exchanger with an ash removal function.
The heat exchanger with the ash cleaning function comprises a heat exchange assembly, an ash blowing assembly and an ash blowing pipe, wherein the heat exchange assembly is arranged on the heat exchange assembly;
the soot blowing assembly is arranged above the heat exchange assembly, and the soot blowing pipe can move from a first position to a second position along the height direction of the heat exchange assembly;
the first location is within the soot blowing assembly and the second location is within the heat exchange assembly;
the blowing pipe is provided with one or more blowing pipe nozzles, and the outlet direction of the blowing pipe nozzles and the axis of the blowing pipe form a first angle.
Preferably, the heat exchange assembly comprises a first inlet, a first outlet, a second inlet, a second outlet, a heat exchange assembly shell pass and a heat exchange assembly tube pass, and two ends of the heat exchange assembly shell pass are respectively connected with the first inlet and the first outlet; the two ends of the tube pass of the heat exchange assembly are respectively connected with the second inlet and the second outlet;
and a soot blowing pipe accommodating cavity is arranged in the shell pass of the heat exchange assembly, and the second position is positioned in the shell pass of the heat exchange assembly.
Preferably, the soot blowing assembly comprises a soot blowing pipe cover, a soot blowing pipe driver and a compressed air control valve group; the soot blowing pipe cover is arranged above the heat exchange assembly, the soot blowing pipe driver is installed at the top end of the soot blowing pipe cover, the compressed air control valve group is installed in the soot blowing pipe cover, and the first position is located in the soot blowing pipe cover;
the soot blowing pipe is provided with an execution assembly; the soot blowing pipe driver is electrically connected with the execution assembly;
the compressed air control valve group is connected with the soot blowing pipe through a pipeline.
Preferably, the lance tube is rotatable along the axis of the lance tube.
Preferably, the heat exchanger further comprises a service opening, and the service opening is arranged on the heat exchange assembly.
Preferably, the heat exchange assembly further comprises a dust accommodating groove, and the dust accommodating groove is located below the bottom of the shell side of the heat exchange assembly.
Preferably, the number of the soot blowing assemblies, the soot blowing pipe accommodating cavities and the soot blowing pipes is multiple, and the number of the soot blowing assemblies, the soot blowing pipe accommodating cavities and the soot blowing pipes corresponds to one another.
Preferably, the plurality of soot blowing assemblies are distributed at equal intervals above the heat exchange assembly; the soot blowing pipe accommodating cavities are distributed at equal intervals in the shell side of the heat exchange assembly.
Preferably, the lance tube is integrally connected with the lance tube nozzle.
Preferably, a one-way valve is also included; the check valve is arranged on a pipeline between the compressed air control valve group and the soot blowing pipe, and allows fluid in the pipeline to flow into the soot blowing pipe from the compressed air control valve group.
Compared with the prior art, the utility model has the following beneficial effects:
1. the ash-blowing type ash-removing device adopts a soot-blowing mode, compressed air can be directly contacted with ash to clean, the action effect is more obvious, and the noise generated by soot-blowing is smaller.
2. The soot blowing pipe can rotate 180 degrees or 360 degrees, the soot blowing pipe can move up and down, the number and the position of the nozzles can be flexibly adjusted according to the size of the heat exchanger, the whole heat exchanger can be blown at all angles, and no dead angle exists.
3. The soot blowing pipe is positioned outside the heat exchanger when not in operation, is not influenced by high temperature in the heat exchanger and has long service life.
4. The utility model integrates the soot blowing component and the soot blowing pipe in the heat exchanger for cleaning soot, thereby greatly prolonging the service life of the heat exchanger.
5. The utility model has simple structure, reduces the system operation cost and the ash removal cost, and is economic and reliable.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
fig. 3 is a schematic cross-sectional structure of the present invention.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.
The utility model provides a heat exchanger with a dust cleaning function, which comprises a heat exchange assembly, a dust blowing assembly and a dust blowing pipe 7, wherein the heat exchange assembly is arranged on the heat exchange assembly; the soot blowing assembly is arranged above the heat exchange assembly, and the soot blowing pipe 7 can move from a first position to a second position along the height direction of the heat exchange assembly; the first location is within the soot blowing assembly and the second location is within the heat exchange assembly; the blowing pipe 7 is provided with one or more blowing pipe nozzles 8, preferably, the blowing pipe 7 and the blowing pipe nozzles 8 are integrally connected, and the number and the positions of the blowing pipe nozzles 8 can be flexibly designed according to the size of the heat exchanger. The outlet direction of the lance tube nozzle 8 and the axis of the lance tube 7 form a first angle; preferably, the first angle is greater than 1 ° and less than 180 °, and the first angle is 90 °. When the lance tube 7 is in the first position, the bottom of the lance tube 7 is above the bottom of the sootblowing assembly. When the lance tube 7 is in the second position, the bottom of the lance tube 7 is in contact with the bottom of the heat exchange assembly. The soot blowing assembly and the soot blowing pipe 7 constitute a rotary soot blower.
The soot blowing assembly comprises a soot blowing pipe cover 9, a soot blowing pipe driver 10 and a compressed air control valve group 11; the soot blowing pipe cover 9 is arranged above the heat exchange assembly, the soot blowing pipe driver 10 is installed at the top end of the soot blowing pipe cover 9, the compressed air control valve group 11 is installed in the soot blowing pipe cover 9, and the first position is located in the soot blowing pipe cover 9. The lance tube 7 is rotatable along the axis of the lance tube 7. Preferably, the lance tube 7 is capable of a 180 ° rotation or a 360 ° rotation along the axis of said lance tube 7. The soot blowing pipe (7) is provided with an execution assembly; the lance tube driver (10) is electrically connected with the executing component, and the lance tube driver (10) drives the movement of the lance tube (7) by controlling the executing component. The compressed air control valve group 11 is connected with the soot blowing pipe 7 through a pipeline; in a preferred example, the heat exchanger with the ash removal function further comprises a one-way valve; the check valve is arranged on a pipeline between the compressed air control valve group 11 and the lance tube 7, allows fluid in the pipeline to flow into the lance tube 7 from the compressed air control valve group 11, and is used for preventing the fluid in the heat exchange assembly shell pass 5 from reversely passing through the compressed air control valve group 11. The first position is the position closest to the lance tube drive 10 in the movement path of the lance tube 7, and the second position is the position farthest from the lance tube drive 10 in the movement path of the lance tube 7.
The heat exchange assembly comprises a first inlet 1, a first outlet 2, a second inlet 3, a second outlet 4, a heat exchange assembly shell pass 5 and a heat exchange assembly tube pass 6, wherein two ends of the heat exchange assembly shell pass 5 are respectively connected with the first inlet 1 and the first outlet 2; two ends of the heat exchange assembly tube pass 6 are respectively connected with the second inlet 3 and the second outlet 4; a soot blowing pipe accommodating cavity 13 is arranged in the heat exchange assembly shell pass 5, and the second position is located in the heat exchange assembly shell pass 5.
Specifically, when the lance tube 7 is in the first position, the bottom of the lance tube 7 is located above the bottom of the lance tube housing 9. When the lance tube 7 is in the second position, the bottom of the lance tube 7 is in contact with the bottom of the lance tube receiving chamber 13.
The heat exchanger with the ash cleaning function further comprises an access hole 12, and the access hole 12 is formed in the heat exchange assembly.
The heat exchanger with the ash cleaning function further comprises a dust accommodating groove 14, and the dust accommodating groove 14 is located below the bottom of the shell pass 5 of the heat exchange assembly.
The number of the soot blowing assemblies, the soot blowing pipe accommodating cavities 13 and the soot blowing pipes 7 is multiple, and the number of the soot blowing assemblies, the soot blowing pipe accommodating cavities 13 and the soot blowing pipes 7 corresponds to one another. The plurality of soot blowing assemblies are distributed above the heat exchange assembly at equal intervals; the lance tube accommodating cavities 13 are distributed at equal intervals in the shell side 5 of the heat exchange assembly.
The working process of the utility model comprises the following steps:
step 1: opening the compressed air control valve group 11 to enable compressed air for purging to enter the soot blowing pipe 7 and blow out from the soot blowing pipe nozzle 8;
step 2: the ash pipe driver 9 drives the ash blowing pipe 7 to move from the first position to the second position along the height direction of the heat exchange assembly; and the soot tube driver 9 controls the soot blowing tube 7 to rotate along the axis of the soot blowing tube 7.
And step 3: after reaching the second position, the ash tube driver 9 drives the ash blowing tube 7 to move from the second position to the first position along the height direction of the heat exchange assembly; and the soot tube driver 9 controls the soot blowing tube 7 to rotate along the axis of the soot blowing tube 7.
And 4, step 4: and (5) repeating the step (2) and the step (3) until the ash removal is finished.
And 5: the soot tube driver 9 drives the soot blowing tube 7 to return to the first position.
The utility model aims to solve the problem of ash deposition of the existing heat exchanger by adopting an automatic rotary soot blower, and solve the problem of ash deposition caused by the fact that waste gas of a carbon fiber carbonization furnace enters the heat exchanger after being combusted by a direct combustion furnace.
The heat exchanger with the ash removal function adopts a shell-and-tube design, high-temperature flue gas purified by the three-section type direct-fired furnace enters the shell pass 5 of the heat exchange assembly from the first inlet 1, fresh air enters the tube pass 6 of the heat exchange assembly from the second inlet 3, the flue gas is cooled and discharged from the first outlet 2 after heat exchange, and air is heated and discharged from the second outlet 4.
The number of rotary soot blowers is determined by the size of the heat exchanger. The lance tube drive 10 can control the up-and-down movement and the rotational movement of the lance tube 7, and the rotational movement can be 180 degrees or 360 degrees. The initial position of the lance tube 7 is located in the lance tube shield 9 outside the heat exchanger. When the ash cleaning procedure is started, the ash blowing pipe driver 10 drives the ash blowing pipe 7 to rotate downwards, then to rotate upwards when reaching the bottommost end, and the operation is repeated in a circulating way. Compressed air is controlled by a compressed air control valve group 11, is conveyed to the soot blowing pipe 7 and is sprayed out by a soot blowing pipe nozzle 8 to directly blow ash on the outer surface of the heat exchanger pipe. By such reciprocating purging, the ash adhered to the outer surface of the heat exchanger tube can be blown up in all directions and discharged from the first outlet 2 along with the flue gas. When the ash removal is finished, the soot blowing pipe 7 is reset to the initial position of the soot blowing pipe cover 9 outside the heat exchanger. The access hole 12 is used for normal maintenance and is simple and convenient.
The utility model designs a heat exchanger with an ash removal function aiming at dust-containing high-temperature flue gas generated after the waste gas of a carbon fiber carbonization furnace is treated by a direct combustion type incinerator, can sweep and remove ash in all directions, has no dead angle, and has an excellent ash removal effect. The heat exchange and ash removal functions are integrated, the running cost of the system is reduced, the problem of ash deposition of the heat exchanger is solved, and the service life of the heat exchanger is prolonged. The rotary soot blower composed of the soot blowing assembly and the soot blowing pipe 7 is positioned outside the heat exchanger when not in operation, is not influenced by high temperature in the heat exchanger, and has long service life. The soot blower is integrated in the heat exchanger for cleaning soot, so that the service life of the heat exchanger is greatly prolonged. Meanwhile, the heat exchanger is simple in structure and low in manufacturing cost, the ash cleaner is integrated on the heat exchanger, the equipment investment is reduced, the occupied area is small, and the operation is stable and efficient.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A heat exchanger with a dust cleaning function is characterized by comprising a heat exchange assembly, a dust blowing assembly and a dust blowing pipe (7);
the soot blowing assembly is arranged above the heat exchange assembly, and the soot blowing pipe (7) can move from a first position to a second position along the height direction of the heat exchange assembly;
the first location is within the soot blowing assembly and the second location is within the heat exchange assembly;
the blowing pipe (7) is provided with one or more blowing pipe nozzles (8), and the outlet direction of the blowing pipe nozzles (8) and the axis of the blowing pipe (7) form a first angle.
2. The heat exchanger with a function of removing dust according to claim 1, wherein the lance tube (7) is rotatable along an axis of the lance tube (7).
3. The heat exchanger with the ash removal function according to claim 1, wherein the heat exchange assembly comprises a first inlet (1), a first outlet (2), a second inlet (3), a second outlet (4), a heat exchange assembly shell pass (5) and a heat exchange assembly tube pass (6), and two ends of the heat exchange assembly shell pass (5) are respectively connected with the first inlet (1) and the first outlet (2); two ends of the heat exchange assembly tube pass (6) are respectively connected with the second inlet (3) and the second outlet (4);
a soot blowing pipe accommodating cavity (13) is arranged in the heat exchange assembly shell pass (5), and the second position is located in the heat exchange assembly shell pass (5).
4. The heat exchanger with a soot cleaning function according to claim 1, wherein the soot blowing assembly comprises a soot blowing tube cover (9), a soot blowing tube driver (10) and a compressed air control valve group (11); the soot blowing pipe cover (9) is arranged above the heat exchange assembly, the soot blowing pipe driver (10) is installed at the top end of the soot blowing pipe cover (9), the compressed air control valve group (11) is installed in the soot blowing pipe cover (9), and the first position is located in the soot blowing pipe cover (9);
the soot blowing pipe (7) is provided with an execution assembly; the soot blowing pipe driver (10) is electrically connected with the execution assembly;
the compressed air control valve group (11) is connected with the soot blowing pipe (7) through a pipeline.
5. The heat exchanger with the ash removing function according to claim 1, further comprising a service opening (12), wherein the service opening (12) is arranged on the heat exchange assembly.
6. The heat exchanger with the ash removing function according to claim 1, further comprising a dust accommodating groove (14), wherein the dust accommodating groove (14) is positioned below the bottom of the shell side (5) of the heat exchange assembly.
7. The heat exchanger with the ash cleaning function according to claim 1, wherein the number of the soot blowing assemblies, the soot blowing pipe accommodating cavities (13) and the soot blowing pipes (7) is multiple, and the number of the soot blowing assemblies, the soot blowing pipe accommodating cavities (13) and the soot blowing pipes (7) corresponds to one another.
8. The heat exchanger with an ash removal function of claim 7, wherein the plurality of ash blowing assemblies are distributed at equal intervals above the heat exchange assembly; the soot blowing pipe accommodating cavities (13) are distributed in the shell side (5) of the heat exchange assembly at equal intervals.
9. The heat exchanger with ash removing function according to claim 1, wherein the lance tube (7) is integrally connected with the lance tube nozzle (8).
10. The heat exchanger with ash removing function according to claim 4, further comprising a check valve; the check valve is arranged on a pipeline between the compressed air control valve group (11) and the soot blowing pipe (7), and fluid in the pipeline is allowed to flow into the soot blowing pipe (7) from the compressed air control valve group (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122261671.1U CN216115610U (en) | 2021-09-17 | 2021-09-17 | Heat exchanger with ash removal function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122261671.1U CN216115610U (en) | 2021-09-17 | 2021-09-17 | Heat exchanger with ash removal function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216115610U true CN216115610U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122261671.1U Active CN216115610U (en) | 2021-09-17 | 2021-09-17 | Heat exchanger with ash removal function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216115610U (en) |
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2021
- 2021-09-17 CN CN202122261671.1U patent/CN216115610U/en active Active
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