CN220507731U - Rotary kiln flue gas heat energy recycling system - Google Patents
Rotary kiln flue gas heat energy recycling system Download PDFInfo
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- CN220507731U CN220507731U CN202321522846.2U CN202321522846U CN220507731U CN 220507731 U CN220507731 U CN 220507731U CN 202321522846 U CN202321522846 U CN 202321522846U CN 220507731 U CN220507731 U CN 220507731U
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- flue gas
- rotary kiln
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- heat exchanger
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000003546 flue gas Substances 0.000 title claims abstract description 106
- 238000004064 recycling Methods 0.000 title claims abstract description 21
- 239000002918 waste heat Substances 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims description 15
- 239000000779 smoke Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 238000001354 calcination Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a rotary kiln flue gas heat energy recycling system, through setting up the gas distributor, carry the high temperature flue gas of rotary kiln output to the air heat exchanger respectively to the air preheating of input rotary kiln, carry out heat utilization in with exhaust-heat boiler, and carry the high temperature flue gas after heat transfer among the air heat exchanger to exhaust-heat boiler in, further utilize heat wherein, use the heat wherein again in the flue gas input heat exchanger of exhaust-heat boiler output, the system of this application uses through the cooperation of above-mentioned equipment, carry out respectively with the heat in the high temperature flue gas of rotary kiln output, the cascaded utilization of rotary kiln flue gas waste heat, in having overcome current mode, the rotary kiln flue gas heat energy does not obtain the problem of make full use of.
Description
Technical Field
The application relates to the technical field of energy recycling, in particular to a rotary kiln flue gas heat energy recycling system.
Background
The rotary kiln is a rotary calcining kiln, which belongs to the class of building material equipment, and can be divided into a cement kiln, a metallurgical chemical kiln and a lime kiln according to different treatment materials, wherein the cement kiln is mainly used for calcining cement clinker, the cement kiln is mainly used for producing cement kiln by a dry method and the cement kiln is mainly used for producing cement kiln by a wet method, and the metallurgical chemical kiln is mainly used for magnetizing roasting lean iron ore in steel plants, oxidizing roasting chromium and nickel iron ore in metallurgical industry, roasting high alumina bauxite in refractory material plants, roasting clinker in aluminum plants, roasting chromium ore sand in aluminum hydroxide and chemical plants, chromium ore powder and other minerals.
In the metallurgical process of the rotary kiln, the temperature of kiln tail flue gas is 400-700 ℃, and a large amount of heat energy is contained in the flue gas, so that a large amount of energy is wasted if the flue gas is not recycled.
The traditional waste heat utilization mode is that a corresponding waste heat boiler is matched with the tail part of the rotary kiln, the rotary kiln smoke is completely transferred into the waste heat boiler to produce water vapor, and part of smoke heat energy is converted into water vapor heat energy in the waste heat boiler for production and heating. However, the temperature of the discharged flue gas is still higher after the heat exchange of the high-temperature flue gas entering the waste heat boiler, so that the heat energy of the flue gas is not fully utilized.
Disclosure of Invention
The application provides a rotary kiln flue gas heat energy recycling system for in solving the mode of above-mentioned current utilization rotary kiln flue gas waste heat, the flue gas heat energy does not obtain the problem of make full use of.
The application provides a rotary kiln flue gas heat energy recycling system, which comprises a rotary kiln, wherein a flue gas output end of the rotary kiln is respectively connected with an air heat exchanger and a waste heat boiler through a gas distributor;
the air heat exchanger is also respectively connected with the input end of the rotary kiln and the fan;
the air distributor is connected with the tube side input end of the air heat exchanger, and the waste heat boiler is connected with the tube side output end of the air heat exchanger; the input end of the rotary kiln is connected with the shell side output end of the air heat exchanger, and the output end of the fan is connected with the shell side input end of the air heat exchanger;
the waste heat boiler is also connected with a heat exchanger.
Optionally, the air heat exchanger comprises a cylinder and sealing heads for sealing two ends of the cylinder;
a plurality of heat exchange straight pipes and a plurality of heat exchange coils are arranged in the cylinder body; the heat exchange straight pipes and the heat exchange coils are communicated with the end sockets;
the plurality of heat exchange straight pipes are arranged at the central position of the cylinder body, and the plurality of heat exchange coils are coiled outside the plurality of heat exchange straight pipes.
Optionally, the heat exchanger is also connected with a bag-type dust collector.
Optionally, a cyclone separator is further arranged between the flue gas output end of the rotary kiln and the gas separator.
Optionally, the air separator comprises an inner pipe and an outer pipe which are coaxially arranged, one end of the inner pipe is arranged in the outer pipe, and the other end of the inner pipe penetrates through the side wall of the outer pipe to be connected with the waste heat boiler;
one end of the outer tube is connected with the smoke output end of the rotary kiln, and the other end is connected with the tube side input end of the air heat exchanger.
Optionally, the number ratio of the heat exchange straight pipes to the heat exchange coils is 1:1-3.
Optionally, the ratio of the cross-sectional areas of the outer tube and the inner tube is 1:1-4.
The utility model provides a rotary kiln flue gas heat energy recycling system, through setting up the gas distributor, carry the high temperature flue gas of rotary kiln output to the air heat exchanger respectively to the air preheating of input rotary kiln, carry out heat utilization in with exhaust-heat boiler, and carry the high temperature flue gas after heat transfer among the air heat exchanger to exhaust-heat boiler in, further utilize heat wherein, use the heat wherein again in the flue gas input heat exchanger of exhaust-heat boiler output, the system of this application uses through the cooperation of above-mentioned equipment, carry out respectively with the heat in the high temperature flue gas of rotary kiln output, the cascaded utilization of rotary kiln flue gas waste heat, in having overcome current mode, the rotary kiln flue gas heat energy does not obtain the problem of make full use of.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a rotary kiln flue gas heat energy recycling system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a return air heat exchanger according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a rotary kiln flue gas heat energy recycling system according to another embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a rotary kiln flue gas heat energy recycling system according to another embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an air separator according to an embodiment of the present application.
Reference numerals illustrate:
1. a rotary kiln; 2. an air heat exchanger; 3. a waste heat boiler; 4. a blower; 5. a heat exchanger; 6. a bag-type dust collector; 7. a cyclone separator; 11. an air separator; 21. a cylinder; 22. a seal head; 201. a heat exchange straight pipe; 202. a heat exchange coil; 1101. an inner tube; 1102. an outer tube.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, are also within the scope of the present application based on the embodiments herein.
As shown in fig. 1, the application provides a rotary kiln flue gas heat energy recycling system, which comprises a rotary kiln 1, wherein the flue gas output end of the rotary kiln 1 is respectively connected with an air heat exchanger 2 and a waste heat boiler 3 through a gas separator 11;
the air heat exchanger 2 is also respectively connected with the input end of the rotary kiln 1 and the fan 4;
the air distributor 11 is connected with the tube side input end of the air heat exchanger 2, and the waste heat boiler 3 is connected with the tube side output end of the air heat exchanger 2; the input end of the rotary kiln 1 is connected with the shell side output end of the air heat exchanger 2, and the output end of the fan 4 is connected with the shell side input end of the air heat exchanger 2;
the waste heat boiler 3 is also connected with a heat exchanger 5.
In this application, because the rotary kiln 1 needs to be blown into air to support the calcination or smelting process in the kiln during the reuse process, if the external air is directly blown into the kiln, the air temperature is lower, heat is absorbed, the temperature in the kiln is reduced, and the stability of the calcination or smelting process is affected. Therefore, a part of the high-temperature flue gas is separated by the air separator 11 to preheat the air entering the rotary kiln, and the heat required for preheating the air is not too much, so that the heat is wasted if the high-temperature flue gas completely passes through the air heat exchanger 2. Therefore, the high-temperature flue gas is split by the gas splitter 11, one part of the flue gas enters the tube side of the air heat exchanger 2 for preheating air, and the other part of the flue gas enters the waste heat boiler 3 for utilization, so that the classified utilization of the heat of the high-temperature flue gas can be realized, and the energy utilization efficiency can be improved.
When the system is used, high-temperature flue gas (the temperature is 400-700 ℃) is generated in the production process of the rotary kiln 1, is discharged from the output end of the kiln tail, and is firstly distributed by the gas distributor 11. Part of the flue gas enters the tube side of the air heat exchanger 2, and at the same time, the fan 4 sucks air from the outside to compress and pressurize, and inputs the pressurized air from the end of the shell Cheng Shuru in the air heat exchanger 2. The low-temperature air in the shell pass exchanges heat with the high-temperature flue gas in the tube pass, the temperature of the air after heat exchange is increased, the air is output from the output end of the shell pass of the air heat exchanger 2 and enters the input end of the rotary kiln 1, and sufficient oxygen is provided for the calcination process of the rotary kiln. The high-temperature flue gas which completes heat exchange between the air heat exchanger 2 and the air in the shell pass has reduced temperature, is discharged from the output end of the tube pass, and enters the waste heat boiler 3 for use.
The other part of the high-temperature flue gas entering the gas separator 11 and the flue gas output by the tube side of the air heat exchanger 2 enter the waste heat boiler 3 together for use, the high-temperature flue gas evaporates water in the waste heat boiler 3 to generate water vapor, namely, the heat in the high-temperature flue gas is converted into sensible heat and latent heat of the water vapor, and the waste heat boiler 3 conveys the generated water vapor to a corresponding working section such as a workshop for heating or other workshops needing steam heating. The flue gas temperature after the heat is utilized by the waste heat boiler 3 is still higher (the temperature is about 100 ℃), so that the flue gas output from the waste heat boiler 3 can enter the heat exchanger 5 to exchange heat with a heat exchange medium (in the application, the warm water) to heat the heat exchange medium, and the heated heat exchange medium is output from the heat exchanger 5 and can be used for other workshops as a heating medium.
The heat of the flue gas is further utilized through the heat exchanger 5, the temperature of the flue gas is lower (50-room temperature), and the flue gas with lower temperature is input into a flue gas purification working section for deep cleaning.
The utility model provides a rotary kiln flue gas heat energy recycling system, through setting up gas distributor 11, carry the high temperature flue gas of rotary kiln 1 output respectively to air heat exchanger 2 to the air preheating of input rotary kiln 1, and carry out heat utilization in the exhaust-heat boiler 3, and carry the high temperature flue gas after heat transfer in the air heat exchanger 2 to in the exhaust-heat boiler 3, further utilize heat wherein, utilize the heat wherein again in the flue gas of exhaust-heat boiler 3 output input heat exchanger 5 again, the system of this application uses through the cooperation of above-mentioned equipment, carry out respectively with the heat in the high temperature flue gas of rotary kiln 1 output, the stepwise utilization, the utilization ratio of rotary kiln flue gas waste heat has been improved, in the current mode has been overcome, the flue gas heat energy has not obtained make full use of's problem.
Alternatively, as shown in fig. 2, the air heat exchanger 2 includes a cylinder 21 and caps 22 sealing both ends of the cylinder 21;
a plurality of heat exchange straight pipes 201 and a plurality of heat exchange coils 202 are arranged in the cylinder 21; the heat exchange straight pipes 201 and the heat exchange coils 202 are communicated with the seal heads 22;
a plurality of heat exchange straight pipes 201 are arranged at the central position of the cylinder 21, and a plurality of heat exchange coils 202 are coiled outside the plurality of heat exchange straight pipes 201.
In this application, the tube side of air heat exchanger 2 includes heat exchange straight tube 201 and heat exchange coil 202, sets up heat exchange coil 202's purpose to increase heat transfer area to make air energy and high temperature flue gas fully exchange heat, utilize the heat therein. However, if the number of the heat exchange coils 202 is excessive in use, the resistance of the smoke increases due to the increase of the path after the coils are coiled, so that a plurality of heat exchange straight pipes 201 are arranged in the air heat exchanger 2 to stabilize the smoke flow and reduce the air resistance, so as to reduce the advancing resistance of the smoke.
Optionally, as shown in fig. 3, a bag-type dust collector 6 is also connected to the heat exchanger 5.
In this application, because a large amount of dust can be contained in the high temperature flue gas of rotary kiln 1 output, if direct emission can cause the pollution of environment, consequently set up sack cleaner 6 and can filter remaining dust in the flue gas, reduce the dust content in the flue gas, because main filter media in the sack cleaner 6 is the sack, it is unfavorable to work under high temperature (more than 220 ℃), otherwise the bad result of burning bag can take place, consequently set up it behind heat exchanger 5.
Optionally, as shown in fig. 4, a cyclone separator 7 is further arranged between the flue gas output end of the rotary kiln 1 and the gas separator 11.
In the application, a large amount of dust is contained in the high-temperature flue gas output by the rotary kiln 1, the flue gas output by the rotary kiln is firstly input into the cyclone separator 7, a part of dust in the flue gas is removed, the dust content of the flue gas is reduced, the adverse effect of excessive dust content in the flue gas on subsequent treatment equipment can be prevented,
alternatively, as shown in fig. 5, the gas distributor 11 includes an inner tube 1101 and an outer tube 1102 coaxially disposed, one end of the inner tube 1101 is inside the outer tube 1102, and the other end is connected to the waste heat boiler 3 through a side wall of the outer tube 1102;
one end of the outer tube 1102 is connected with the smoke output end of the rotary kiln 1, and the other end is connected with the tube side input end of the air heat exchanger 2.
In this application, the gas separator 11 includes an inner tube 1101 and an outer tube 1102 that are coaxially disposed, so that the flue gas inputted into the gas separator 11 is inputted into different devices through the inner tube 1101 and the outer tube 1102, and the distribution of the flue gas flow is realized.
Alternatively, the ratio of the number of heat exchange straight tubes 201 to the number of heat exchange coils 202 is 1:1-3.
In the application, the heat exchange straight pipe 201 can reduce smoke resistance, the heat exchange coil pipe 202 can improve heat exchange efficiency, the number ratio of the heat exchange straight pipe 201 to the heat exchange coil pipe 202 is determined to be 1:1-3, and the air heat exchanger 2 can be made to have the characteristics of reducing smoke resistance and guaranteeing heat exchange efficiency.
Optionally, the ratio of the cross-sectional areas of the outer tube 1102 and the inner tube 1101 is 1:1-4.
In this application, because the tube side connection of the outer tube 1102 and the air heat exchanger 2 is used for heating air, the requirement on flue gas is relatively less here, and the inner tube 1101 inputs the flue gas into the waste heat boiler 3 for use, and the requirement on flue gas is relatively more here, therefore, under the condition of analyzing the above-mentioned actual use, the ratio of the cross-sectional area of the outer tube 1102 and the inner tube 1101 is set to be 1:1-4, and the heat in the high-temperature flue gas of the rotary kiln 1 can be fully utilized.
A smoke heat energy recycling system of a rotary kiln has the following working processes:
the production process of the rotary kiln 1 generates high-temperature flue gas (the temperature is 400-700 ℃), the high-temperature flue gas is discharged from the output end of the kiln tail, the high-temperature flue gas firstly enters the cyclone separator 7 to reduce the dust content in the flue gas, the adverse effect on subsequent equipment is avoided, the flue gas output from the cyclone separator 7 enters the gas separator 11, and the flue gas respectively enters the outer pipe 1102 and the inner pipe 1101 of the gas separator 11, so that the distribution of the flue gas flow is realized. The flue gas entering the gap between the outer tube 1102 and the inner tube 1101 enters the tube side of the air heat exchanger 2 from the output end of the outer tube 1102, namely, the flue gas enters the heat exchange straight tube 201 and the heat exchange coil 202 in the air heat exchanger 2 respectively, and at the same time, the fan 4 sucks air from the outside to compress and pressurize, and inputs the pressurized air from the shell Cheng Shuru end of the air heat exchanger 2. The low-temperature air in the shell pass exchanges heat with the high-temperature flue gas in the tube pass, the temperature of the air after heat exchange is increased, the air is output from the shell pass output end of the air heat exchanger 2 and enters the input end of the rotary kiln 1, and sufficient oxygen is provided for the calcination process of the rotary kiln 1. The high-temperature flue gas which completes heat exchange between the air heat exchanger 2 and the air in the shell pass has the temperature reduced, is discharged from the output end of the tube pass and enters the waste heat boiler for use.
The high-temperature flue gas entering the inner pipe 1101 of the gas separator 11 and the flue gas output by the tube side of the air heat exchanger 2 enter the waste heat boiler 3 together for use, the high-temperature flue gas evaporates water in the waste heat boiler 3 to generate water vapor, that is, heat in the high-temperature flue gas is converted into sensible heat and latent heat of the water vapor, and the waste heat boiler 3 conveys the generated water vapor to a corresponding working section, such as a workshop for heating or other workshops needing steam heating. The flue gas temperature after the heat is utilized by the waste heat boiler 3 is still higher (the temperature is about 100 ℃), so that the flue gas output from the waste heat boiler 3 can enter the heat exchanger 5 to exchange heat with a heat exchange medium (in the application, the warm water) to heat the heat exchange medium, and the heated heat exchange medium is output from the heat exchanger 5 and can be used for other workshops as a heating medium.
The heat of the flue gas is further utilized through the heat exchanger 5, the flue gas with lower temperature (50-room temperature) is input into the bag-type dust remover 6 for dust removal, and the flue gas after dust removal can be discharged or deeply cleaned after reaching the standard.
Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (7)
1. The rotary kiln flue gas heat energy recycling system is characterized by comprising a rotary kiln (1), wherein the flue gas output end of the rotary kiln (1) is respectively connected with an air heat exchanger (2) and a waste heat boiler (3) through a gas separator (11);
the air heat exchanger (2) is also respectively connected with the input end of the rotary kiln (1) and the fan (4);
the air separator (11) is connected with the tube side input end of the air heat exchanger (2), and the waste heat boiler (3) is connected with the tube side output end of the air heat exchanger (2); the input end of the rotary kiln (1) is connected with the shell side output end of the air heat exchanger (2), and the output end of the fan (4) is connected with the shell side input end of the air heat exchanger (2);
the waste heat boiler (3) is also connected with a heat exchanger (5).
2. The rotary kiln flue gas heat energy recycling system according to claim 1, characterized in that the air heat exchanger (2) comprises a cylinder (21) and sealing heads (22) for sealing two ends of the cylinder (21);
a plurality of heat exchange straight pipes (201) and a plurality of heat exchange coils (202) are arranged in the cylinder body (21); the heat exchange straight pipes (201) and the heat exchange coils (202) are communicated with the seal heads (22);
the plurality of heat exchange straight pipes (201) are arranged at the central position of the cylinder body (21), and the plurality of heat exchange coils (202) are coiled outside the plurality of heat exchange straight pipes (201).
3. The rotary kiln flue gas heat energy recycling system according to claim 1, wherein the heat exchanger (5) is further connected with a bag-type dust collector (6).
4. The rotary kiln flue gas heat energy recycling system according to claim 1, wherein a cyclone separator (7) is further arranged between the flue gas output end of the rotary kiln (1) and the gas separator (11).
5. The rotary kiln flue gas heat energy recycling system according to claim 1, wherein the gas separator (11) comprises an inner tube (1101) and an outer tube (1102) which are coaxially arranged, one end of the inner tube (1101) is arranged in the outer tube (1102), and the other end of the inner tube passes through the side wall of the outer tube (1102) to be connected with the waste heat boiler (3);
one end of the outer tube (1102) is connected with the smoke output end of the rotary kiln (1), and the other end of the outer tube is connected with the tube side input end of the air heat exchanger (2).
6. The rotary kiln flue gas heat energy recycling system according to claim 2, wherein the ratio of the number of the heat exchange straight pipes (201) to the number of the heat exchange coils (202) is 1:1-3.
7. The rotary kiln flue gas heat energy recycling system according to claim 5, characterized in that the ratio of the cross-sectional area of the outer tube (1102) to the inner tube (1101) is 1:1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321522846.2U CN220507731U (en) | 2023-06-15 | 2023-06-15 | Rotary kiln flue gas heat energy recycling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321522846.2U CN220507731U (en) | 2023-06-15 | 2023-06-15 | Rotary kiln flue gas heat energy recycling system |
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| CN220507731U true CN220507731U (en) | 2024-02-20 |
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| CN202321522846.2U Active CN220507731U (en) | 2023-06-15 | 2023-06-15 | Rotary kiln flue gas heat energy recycling system |
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