CN220153239U - Roller kiln with tail gas waste heat recovery equipment - Google Patents
Roller kiln with tail gas waste heat recovery equipment Download PDFInfo
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- CN220153239U CN220153239U CN202321145472.7U CN202321145472U CN220153239U CN 220153239 U CN220153239 U CN 220153239U CN 202321145472 U CN202321145472 U CN 202321145472U CN 220153239 U CN220153239 U CN 220153239U
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- waste heat
- tail gas
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- 239000002918 waste heat Substances 0.000 title claims abstract description 54
- 239000007789 gas Substances 0.000 title claims abstract description 45
- 238000011084 recovery Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 18
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a roller kiln with tail gas waste heat recovery equipment, which comprises a kiln body, a transmission device and waste heat recovery equipment, wherein the transmission device is arranged on the kiln body; the furnace body is internally provided with a hearth, and the transmission device is arranged in the hearth; the hearth is sequentially provided with a heating section, a constant temperature section and a cooling section along the conveying direction of the transmission device; the waste heat recovery device equipment comprises an exhaust device, a treatment furnace device, a heat exchange device and a preheating pipeline; the exhaust device is arranged in the heating section of the hearth, and the treatment furnace device and the heat exchange device are arranged at the top of the furnace body. The roller kiln is provided with an exhaust device, a treatment furnace device, a heat exchange device and a preheating pipeline, the tail gas and the process atmosphere are subjected to heat exchange through the heat exchange device, and the temperature of the atmosphere is increased and then enters the roller kiln, so that waste heat in the flue gas can be utilized, and waste is avoided; meanwhile, the problem that the heating heat of the roller kiln is required to be consumed due to low temperature of newly added atmosphere is solved, and energy consumption is saved.
Description
Technical Field
The utility model relates to the field of waste heat treatment, in particular to a roller kiln with tail gas waste heat recovery equipment.
Background
The roller kiln is a continuous kiln, and can be divided into three parts of a heating section, a constant temperature section and a cooling section by arranging different temperature areas. Roller kiln is widely used in sintering process of new materials such as powder material, ceramic, lithium battery positive and negative electrode materials, etc., taking battery material as an example, the material is sintered in heating section to generate reaction waste gas or volatile gas, and needs to be discharged in time through an exhaust system. High-temperature exhaust can directly exhaust a large amount of heat to the hearth, if any heat is directly exhausted to the atmosphere, a large amount of waste heat is directly lost, and the waste heat cannot be reasonably utilized to cause waste; meanwhile, for some products with special requirements on the atmosphere, a large amount of atmosphere is required to be injected into the process, the temperature of the newly injected atmosphere is low, a large amount of heat is required to be absorbed after the products are injected into the kiln to reach the temperature of the temperature zone of the kiln, and the energy consumption of the roller kiln is further increased in order to maintain the temperature of the roller kiln.
Disclosure of Invention
The utility model aims to provide a roller kiln with tail gas waste heat recovery equipment, so as to solve the problem that the waste heat of the roller kiln is not fully utilized.
To achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a roller kiln with tail gas waste heat recovery equipment, which comprises a kiln body, a transmission device and waste heat recovery equipment, wherein the transmission device is arranged on the kiln body;
the furnace body is internally provided with a hearth, and the transmission device is arranged in the hearth; the hearth is sequentially provided with a heating section, a constant temperature section and a cooling section along the conveying direction of the transmission device;
the waste heat recovery device equipment comprises an exhaust device, a treatment furnace device, a heat exchange device and a preheating pipeline; the exhaust device is arranged in the heating section of the hearth, and the treatment furnace device and the heat exchange device are arranged at the top of the furnace body; the exhaust end of the exhaust device is communicated with the air inlet end of the treatment furnace device through a pipeline; the tail gas outlet end of the treatment furnace device is communicated with the waste heat inlet end of the heat exchange device, the waste heat outlet end of the heat exchange device is communicated with an external exhaust flue, the preheating inlet end of the heat exchange device is communicated with an atmosphere gas source, and the preheating outlet end of the heat exchange device is communicated with one end of the preheating pipeline; the other end of the preheating pipeline passes through the heating section and the constant temperature section and is communicated with the hearth.
In the roller kiln with the tail gas waste heat recovery device, the heat exchange device comprises a shell and a heat exchange assembly, a heat exchange cavity is arranged in the shell, and the heat exchange assembly is arranged in the heat exchange cavity;
the heat exchange assembly comprises an air inlet pipe, a first tube plate, a second tube plate, an air outlet pipe and a plurality of heat exchange rib pipes;
one end of each heat exchange rib pipe is communicated with one side of the first tube plate, the other end of each heat exchange rib pipe is communicated with one side of the second tube plate, and a plurality of heat exchange rib pipes are arranged side by side; the air inlet pipe passes through the shell and is communicated with the other side of the first tube plate; the air outlet pipe is communicated with the preheating pipeline, penetrates through the shell and is communicated with the other side of the second tube plate.
In the roller kiln with the tail gas waste heat recovery device, the heat exchange rib pipe comprises a base pipe, an atmosphere channel is arranged in the base pipe, a plurality of rows of rib fins are arranged in the outer side wall of the base pipe and the atmosphere channel, the rib fins are distributed in the outer side wall of the base pipe or the atmosphere channel in a staggered manner, and the base pipe and the rib fins are integrally formed; the included angle between the rib fins and the axis of the base pipe is 60-90 degrees.
In the roller kiln with the tail gas waste heat recovery device, the length of the base pipe is 0.5-8 m; the inner diameter of the atmosphere channel is 6-250 mm; the thickness of the base pipe is greater than or equal to 0.6mm.
In the roller kiln with the tail gas waste heat recovery device, the heat exchange device further comprises a first dust removal component and a second dust removal component, wherein the first dust removal component is arranged at the top of the heat exchange component, and the second dust removal component is arranged at the bottom of the heat exchange component;
the first dust removing assembly and the second dust removing assembly have the same structure and comprise a first driving device, a second driving device, a first sliding rail, a second sliding rail, a sliding bar and an edge brush; the first sliding rail is arranged on the first tube plate, and the second sliding rail is arranged on the second tube plate; one end of the sliding strip is in sliding assembly with the first sliding rail, the other end of the sliding strip is in sliding assembly with the second sliding rail, and the side brush is arranged on one side, facing the heat exchange rib pipe, of the sliding strip; the first driving device and the second driving device are arranged on the same side, the fixed end of the first driving device is arranged on the first tube plate, and the movable end of the first driving device is connected with the sliding strip; the fixed end of the second driving device is arranged on the second tube plate, and the movable end of the second driving device is connected with the sliding strip.
In the roller kiln with tail gas waste heat recovery equipment, a plurality of thermoelectric generators are arranged on the outer wall of the shell, and the thermoelectric generators are connected with the outside through circuits.
In the roller kiln with the tail gas waste heat recovery device, the preheating pipeline comprises a main pipe, a communicating pipe and a plurality of branch pipes; one end of the main pipe is communicated with the preheating outlet end of the heat exchange device, the other end of the main pipe is communicated with the communicating pipe, and the communicating pipe is horizontally arranged on the side wall of the furnace body along the conveying direction of the conveying device; one end of the branch pipe is communicated with the side wall of the communicating pipe, and the branch pipe is arranged at intervals on a heating section and a constant temperature section of the furnace body; the other end of the branch pipe passes through the furnace body and is communicated with the hearth; and the branch pipe is provided with a regulating valve.
In the roller kiln with the tail gas waste heat recovery device, a filter screen is arranged in a pipeline between the tail gas outlet end of the treatment furnace device and the waste heat inlet end of the heat exchange device.
One technical scheme of the utility model has the following beneficial effects:
the roller kiln is provided with an exhaust device, a treatment furnace device, a heat exchange device and a preheating pipeline, the exhaust device and the heat exchange device are used for carrying out heat exchange on tail gas and process atmosphere, and the temperature of the process atmosphere is increased and then enters the roller kiln, so that waste heat in flue gas can be utilized, and waste of the waste heat in the flue gas is avoided; meanwhile, the problem that the heat consumption of the roller kiln heater needs to be increased due to low temperature of the newly added process atmosphere is solved, the problem that the product quality is affected due to the fact that the temperature cannot be kept stable due to temperature change of the roller kiln during process atmosphere replenishment is prevented, and the energy consumption is saved.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of one embodiment of the present utility model;
FIG. 3 is a schematic cross-sectional view of a heat exchange device in one embodiment of the utility model;
FIG. 4 is a schematic diagram of one embodiment of the present utility model;
in the accompanying drawings: a furnace body 1 and a conveying device 2;
a furnace 11; an exhaust device 31, a treatment furnace device 32, a heat exchange device 33, and a preheating pipeline 34;
a first driving device 301, a second driving device 302, a first sliding rail 303, a second sliding rail 304, a sliding bar 305 and an edge brush 306; the shell 331, the air inlet pipe 332, the first tube plate 333, the second tube plate 334, the air outlet pipe 335, the heat exchange rib pipe 336 and the thermoelectric generator 337; main tube 341, communication tube 342, branch tube 343, and communication valve 344;
heat exchange chamber 3311, base pipe 3361, atmosphere passage 3362, rib fins 3363.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 4, the utility model provides a roller kiln with tail gas waste heat recovery equipment, which comprises a kiln body 1, a conveying device 2 and waste heat recovery equipment;
a hearth 11 is arranged in the furnace body 1, and the conveying device 2 is arranged on the hearth 11; the hearth 11 is sequentially provided with a heating section, a constant temperature section and a cooling section along the conveying direction of the conveying device 2;
the waste heat recovery device equipment comprises an exhaust device 31, a treatment furnace device 32, a heat exchange device 33 and a preheating pipeline 34; the exhaust device 31 is arranged in the heating section of the hearth 11, and the treatment furnace device 32 and the heat exchange device 33 are arranged at the top of the furnace body 1; the exhaust end of the exhaust device 31 is communicated with the air inlet end of the treatment furnace device 32 through a pipeline; the tail gas outlet end of the treatment furnace device 32 is communicated with the waste heat inlet end of the heat exchange device 33, the waste heat outlet end of the heat exchange device 33 is communicated with an external exhaust flue, the preheating inlet end of the heat exchange device 33 is communicated with an atmosphere gas source, and the preheating outlet end of the heat exchange device 33 is communicated with one end of the preheating pipeline 34; the other end of the preheating pipe 34 passes through the temperature raising section and the constant temperature section and is communicated with the hearth 11.
The roller kiln is provided with an exhaust device 31, a treatment furnace device 32, a heat exchange device 33 and a preheating pipeline 34, the exhaust gas and the process atmosphere are subjected to heat exchange through the exhaust device 31 and the heat exchange device 33, and the temperature of the process atmosphere is increased and then enters the roller kiln, so that the waste heat in the exhaust gas can be utilized, and the waste of the waste heat in the exhaust gas is avoided; meanwhile, the problem that the temperature of newly added atmosphere is low and the heat consumption of a roller kiln heater needs to be increased is solved, the problem that the temperature of the roller kiln is changed during process atmosphere supplementation, so that the stability of the temperature cannot be maintained and the quality of products is affected is solved, and the energy consumption is saved.
Because the tail gas of the roller kiln contains a large amount of small molecular organic matters, dust, tar and other smoke dust impurities, if the tail gas is directly used as a heat source of the heat exchange device 33, the smoke dust impurities can be attached to the heat exchange tubes in the heat exchange device 33, so that the heat exchange effect of the heat exchange device 33 is reduced. And after the treatment furnace device 32 is arranged, organic matters and tar in the tail gas can be burnt, the probability that smoke dust impurities adhere to the heat exchange pipes in the heat exchange device 33 is reduced as much as possible, and the heat exchange efficiency of the heat exchange device 33 is improved.
In some embodiments of the utility model, the process atmosphere is nitrogen.
Specifically, the heat exchange device 33 includes a housing 331 and a heat exchange assembly, the housing 331 is provided with a heat exchange cavity 3311, and the heat exchange assembly is disposed in the heat exchange cavity 3311;
the heat exchange assembly comprises an air inlet pipe 332, a first tube plate 333, a second tube plate 334, an air outlet pipe 335 and a plurality of heat exchange rib pipes 336;
one end of the heat exchanging rib pipe 336 is communicated with one side of the first tube plate 333, the other end of the heat exchanging rib pipe 336 is communicated with one side of the second tube plate 334, and a plurality of heat exchanging rib pipes 336 are arranged side by side; the air inlet pipe 332 passes through the outer shell 331 and is communicated with the other side of the first tube plate 333; the air outlet pipe 335 is communicated with the preheating pipe 34, and the air outlet pipe 335 passes through the casing 331 and is communicated with the other side of the second tube plate 334.
The waste heat inlet end and the waste heat outlet end of the heat exchange device 33 are both arranged on the shell 331, the air inlet pipe 332 is a preheating inlet end, and the air outlet pipe 335 is a preheating outlet end. Tail gas enters the heat exchange cavity 3311 from the waste heat inlet end and is discharged out of the heat exchange cavity 3311 from the waste heat outlet end; the process atmosphere enters the first tube plate 333 through the air inlet tube 332, then enters the heat exchange rib tube 336 from the first tube plate 333, and then exchanges heat with the tail gas through the heat exchange rib tube 336; after the process atmosphere is heated, the second tube sheet 334 enters the outlet duct 335, and from the outlet duct 335 into the preheating duct 34, and finally into the furnace 11.
Specifically, the heat exchange rib tube 336 includes a base tube 3361, an atmosphere channel 3362 is provided in the base tube 3361, a plurality of rows of rib fins 3363 are provided on the outer side wall of the base tube 3361 and in the atmosphere channel 3362, the rib fins 3363 are staggered and uniformly distributed on the outer side wall of the base tube 3361 or in the atmosphere channel 3362, and the base tube 3361 and the rib fins 3363 are integrally formed; the rib fin 3363 and the base pipe 3361 have an included angle of 60-90 degrees.
The rib fins 3363 enlarge the heat transfer area of the outer surface of the base pipe 3361 and improve the heat exchange efficiency; in addition, the rib fins 3363 have the function of causing the fluid medium passing through the outer side wall of the base pipe 3361 to be in a turbulent flow state, thereby preventing the formation of a fluid boundary layer and realizing an enhanced heat transfer effect. In addition, the rib fins 3363 and the base pipe 3361 are integrally processed, so that contact thermal resistance of metal is eliminated, and the heat transfer effect is further improved.
In a specific embodiment of the present utility model, the height of the rib fin 3363 is 0.3-7 mm, and the density of the rib fin 3363 on the outer side wall and the inner side wall of the base pipe 3361 is 3000-24000 rib/m.
In the specific embodiment of the utility model, the rib fins 3363 with the parameters are adopted, so that the heat exchange effect of the tail gas and the process atmosphere is good. The density of the rib fins 3363 on the outer side wall and the inner side wall of the base pipe 3361 is 3000-24000 ribs/m, namely, 3000-24000 rib fins 3363 are arranged in a row of rib fins 3363 every 1 meter. In a specific embodiment of the present utility model, the length of the base pipe 3361 is 0.5-8 m; the inner diameter of the atmosphere channel 3362 is 6-250 mm; the base pipe 3361 has a thickness of 0.6mm or more.
In the embodiment of the utility model, the base pipe 3361 with the parameters has good heat exchange effect between the tail gas and the process atmosphere, and can fully utilize the heat of the tail gas.
Specifically, the heat exchange device 33 further includes a first dust removing component and a second dust removing component, where the first dust removing component is disposed at the top of the heat exchange component, and the second dust removing component is disposed at the bottom of the heat exchange component;
the first dust removing component and the second dust removing component have the same structure and comprise a first driving device 301, a second driving device 302, a first sliding rail 303, a second sliding rail 304, a sliding bar 305 and an edge brush 306; the first sliding rail 303 is disposed on the first tube plate 333, and the second sliding rail 304 is disposed on the second tube plate 334; one end of the sliding strip 305 is slidably assembled with the first sliding rail 303, the other end of the sliding strip 305 is slidably assembled with the second sliding rail 304, and the side brush 306 is arranged on one side of the sliding strip 305 facing the heat exchange rib pipe 336; the first driving device 301 and the second driving device 302 are arranged on the same side, the fixed end of the first driving device 301 is arranged on the first tube plate 333, and the movable end of the first driving device 301 is connected with the sliding strip 305; the fixed end of the second driving device 302 is disposed on the second tube plate 334, and the movable end of the second driving device 302 is connected to the sliding strip 305.
After the roller kiln is stopped, the outer side of the heat exchanging rib pipe 336 can be brushed through the first dust removing assembly and the second dust removing assembly. With the structure, dirt, dust and dirt are not easy to deposit, the problem that smoke dust impurities adhere to the heat exchange tubes in the heat exchange device 33 to reduce the heat exchange effect of the heat exchange device 33 is avoided, and the maintenance cost of the heat exchange rib tube 336 is greatly reduced.
Optionally, a plurality of thermoelectric generators 337 are disposed on the outer wall of the housing 331, and the thermoelectric generators 337 are connected to the outside through lines.
In one embodiment of the present utility model, the outer wall of the housing 331 of the heat exchanging device 33 is provided with a plurality of thermoelectric generators 337. The thermoelectric generator 337 can refer to the existing low-grade thermal thermoelectric generator, and can directly convert waste heat into electric energy. By adopting the structure, waste heat is further utilized, power generation is realized by the temperature difference between the shell 331 and the outside, and the power generated by the temperature difference generator 337 can be transmitted to the outside through a circuit.
Specifically, the preheating pipe 34 includes a main pipe 341, a communication pipe 342, and a plurality of branch pipes 343; one end of the main tube 341 is communicated with the preheating outlet end of the heat exchange device 33, the other end of the main tube 341 is communicated with a communicating tube 342, and the communicating tube is horizontally arranged on the side wall of the furnace body 1 along the conveying direction of the conveying device 2; one end of the branch pipe 343 is communicated with the side wall of the communicating pipe 342, and the branch pipe 343 is arranged at intervals on the constant temperature section and the cooling section of the furnace body 1; the other end of the branch pipe 343 passes through the furnace body 1 and is communicated with the hearth 11; the branch pipe 343 is provided with a communication valve 344.
The preheating pipeline 34 conveys the process atmosphere to the hearth 11 of the heating section and the constant temperature section through a plurality of branch pipes 343, so that the problem that the heat consumption of a roller kiln heater needs to be increased due to low temperature of the newly added process atmosphere is avoided, and the temperature stability of the roller kiln is ensured. The staff can open corresponding regulating valves 344 according to the temperature changes of different areas of the roller kiln, so that the process atmosphere after heat exchange enters the hearth 11 through the branch pipes 343 at the corresponding positions, and the temperatures of different areas of the hearth 11 can be accurately regulated and controlled.
Optionally, a filter screen is provided in the conduit between the exhaust gas outlet end of the treatment furnace device 32 and the waste heat inlet end of the heat exchange device 33.
With the above structure, dirt, dust and dirt deposited in the heat exchange chamber 3311 are avoided, and the problem that smoke dust impurities adhere to the heat exchange tubes in the heat exchange device 33 to reduce the heat exchange effect of the heat exchange device 33 is further avoided, so that the maintenance cost of the heat exchange rib tube 336 is greatly reduced.
The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art from consideration of this specification without the exercise of inventive faculty, and such equivalent modifications and alternatives are intended to be included within the scope of the utility model as defined in the claims.
Claims (8)
1. The roller kiln with the tail gas waste heat recovery device is characterized by comprising a kiln body, a transmission device and a waste heat recovery device;
the furnace body is internally provided with a hearth, and the transmission device is arranged in the hearth; the hearth is sequentially provided with a heating section, a constant temperature section and a cooling section along the conveying direction of the transmission device;
the waste heat recovery device equipment comprises an exhaust device, a treatment furnace device, a heat exchange device and a preheating pipeline; the exhaust device is arranged in the heating section of the hearth, and the treatment furnace device and the heat exchange device are arranged at the top of the furnace body; the exhaust end of the exhaust device is communicated with the air inlet end of the treatment furnace device through a pipeline; the tail gas outlet end of the treatment furnace device is communicated with the waste heat inlet end of the heat exchange device, the waste heat outlet end of the heat exchange device is communicated with an external exhaust flue, the preheating inlet end of the heat exchange device is communicated with an atmosphere gas source, and the preheating outlet end of the heat exchange device is communicated with one end of the preheating pipeline; the other end of the preheating pipeline passes through the heating section and the constant temperature section and is communicated with the hearth.
2. The roller kiln with the tail gas waste heat recovery device according to claim 1, wherein the heat exchange device comprises a shell and a heat exchange assembly, a heat exchange cavity is arranged in the shell, and the heat exchange assembly is arranged in the heat exchange cavity;
the heat exchange assembly comprises an air inlet pipe, a first tube plate, a second tube plate, an air outlet pipe and a plurality of heat exchange rib pipes;
one end of each heat exchange rib pipe is communicated with one side of the first tube plate, the other end of each heat exchange rib pipe is communicated with one side of the second tube plate, and a plurality of heat exchange rib pipes are arranged side by side; the air inlet pipe passes through the shell and is communicated with the other side of the first tube plate; the air outlet pipe is communicated with the preheating pipeline, penetrates through the shell and is communicated with the other side of the second tube plate.
3. The roller kiln with the tail gas waste heat recovery device according to claim 2, wherein the heat exchange rib pipe comprises a base pipe, an atmosphere channel is arranged in the base pipe, a plurality of rows of rib fins are arranged in the outer side wall of the base pipe and the atmosphere channel, the rib fins are distributed in the outer side wall of the base pipe and the atmosphere channel in staggered mode, and the base pipe and the rib fins are integrally formed; the included angle between the rib fins and the axis of the base pipe is 60-90 degrees.
4. A roller kiln with a tail gas waste heat recovery device according to claim 3, characterized in that the length of the base pipe is 0.5-8 m; the inner diameter of the atmosphere channel is 6-250 mm; the thickness of the base pipe is greater than or equal to 0.6mm.
5. The roller kiln with the tail gas waste heat recovery device according to claim 2, wherein the heat exchange device further comprises a first dust removal component and a second dust removal component, the first dust removal component is arranged at the top of the heat exchange component, and the second dust removal component is arranged at the bottom of the heat exchange component;
the first dust removing assembly and the second dust removing assembly have the same structure and comprise a first driving device, a second driving device, a first sliding rail, a second sliding rail, a sliding bar and an edge brush; the first sliding rail is arranged on the first tube plate, and the second sliding rail is arranged on the second tube plate; one end of the sliding strip is in sliding assembly with the first sliding rail, the other end of the sliding strip is in sliding assembly with the second sliding rail, and the side brush is arranged on one side, facing the heat exchange rib pipe, of the sliding strip; the first driving device and the second driving device are arranged on the same side, the fixed end of the first driving device is arranged on the first tube plate, and the movable end of the first driving device is connected with the sliding strip; the fixed end of the second driving device is arranged on the second tube plate, and the movable end of the second driving device is connected with the sliding strip.
6. A roller kiln with a tail gas waste heat recovery device according to claim 2, characterized in that the outer wall of the housing is provided with a plurality of thermoelectric generators, which are connected with the outside through lines.
7. A roller kiln with a tail gas waste heat recovery device according to claim 1, characterized in that the preheating pipe comprises a main pipe, a communicating pipe and a plurality of branch pipes; one end of the main pipe is communicated with the preheating outlet end of the heat exchange device, the other end of the main pipe is communicated with the communicating pipe, and the communicating pipe is horizontally arranged on the side wall of the furnace body along the conveying direction of the transmission device; one end of the branch pipe is communicated with the side wall of the communicating pipe, and the branch pipe is arranged at intervals on a heating section and a constant temperature section of the furnace body; the other end of the branch pipe passes through the furnace body and is communicated with the hearth; and the branch pipe is provided with a regulating valve.
8. A roller kiln with a tail gas waste heat recovery device according to claim 1, characterized in that a filter screen is arranged in the conduit between the tail gas outlet end of the treatment furnace device and the waste heat inlet end of the heat exchange device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321145472.7U CN220153239U (en) | 2023-05-12 | 2023-05-12 | Roller kiln with tail gas waste heat recovery equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321145472.7U CN220153239U (en) | 2023-05-12 | 2023-05-12 | Roller kiln with tail gas waste heat recovery equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220153239U true CN220153239U (en) | 2023-12-08 |
Family
ID=89022273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321145472.7U Active CN220153239U (en) | 2023-05-12 | 2023-05-12 | Roller kiln with tail gas waste heat recovery equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220153239U (en) |
-
2023
- 2023-05-12 CN CN202321145472.7U patent/CN220153239U/en active Active
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