CN210922233U - Flue gas waste heat recovery device for industrial kiln - Google Patents
Flue gas waste heat recovery device for industrial kiln Download PDFInfo
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- CN210922233U CN210922233U CN201920668896.9U CN201920668896U CN210922233U CN 210922233 U CN210922233 U CN 210922233U CN 201920668896 U CN201920668896 U CN 201920668896U CN 210922233 U CN210922233 U CN 210922233U
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Abstract
The utility model discloses an industrial kiln flue gas waste heat recovery device, wherein an opening at one end of a first channel is arranged in a flue of a kiln, and is sequentially communicated with a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel and the like, and a natural air channel is communicated to the kiln by connecting a heat pipe type air preheater; a water flow pipeline is arranged in the second channel; and the third channel, the fifth channel, the sixth channel, the seventh channel and the latent heat channel are all provided with a filtering device. And a residual heat circulation port is formed in the top of the fourth channel and communicated to the heat collection station through the latent heat channel. The utility model provides an industrial kiln flue gas waste heat recovery device, through the multiple layer filtering, improve the elimination effect to harmful substance in the flue gas, reduce the harmful substance that the flue gas that discharges to in the air contained, do benefit to the protection of environment, simultaneously the utility model discloses carry out multiple recovery processing to the flue gas waste heat, improved the recycle ratio to the flue gas waste heat.
Description
Technical Field
The utility model relates to a waste heat recovery technical field, more specifically the saying so relates to an industrial kiln flue gas waste heat recovery device.
Background
The waste heat refers to sensible heat and latent heat which are not reasonably utilized in the original design in the energy consumption device of the put-in-operation industrial enterprise due to the limitations of factors such as history, technology, concept and the like. The method comprises the steps of high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like.
In the last decade, due to energy shortage, various energy-saving works are further developed, and waste heat becomes the fifth energy after coal, electric power, petroleum and natural gas, so that the problem of environmental pollution caused by industrial development can be relieved, and the energy cost of enterprises can be effectively reduced. At present, there are a large amount of gas coal fired devices such as stove, boiler among the enterprise of china, but a large amount of 120 ~ 140 ℃ low temperature flue gas directly discharge, perhaps be provided with the processing apparatus to the flue gas waste heat in the flue, but the processing apparatus to the flue gas waste heat among the prior art has a great deal of limitation, can not thoroughly clear away the harmful substance in the flue gas on the one hand, leads to the polluted environment, and on the other hand, the reutilization rate to the flue gas waste heat is lower.
Therefore, how to provide an industrial kiln flue gas waste heat recovery device which improves the utilization rate of flue gas waste heat and is environment-friendly is a problem that needs to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an industrial kiln flue gas waste heat recovery device, through the multiple-layer filtering, improve the elimination effect to harmful substance in the flue gas, reduce the harmful substance that the flue gas that discharges to in the air contains, do benefit to the protection of environment, simultaneously the utility model discloses carry out multiple recovery processing to the flue gas waste heat, improved the recycle ratio to the flue gas waste heat.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the industrial kiln flue gas waste heat recovery device comprises a water flow pipeline, a filtering device, a latent heat channel, a first natural air channel, a second natural air channel, a heat pipe type air preheater and a multi-section flue gas sensible heat channel;
the flue gas sensible heat channel comprises a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel and a seventh channel which are sequentially communicated;
an opening at one end of the first channel is communicated with a flue of the kiln, and an opening at the other end of the first channel is communicated with the second channel; one end of the sixth channel is communicated with the fifth channel, the other end of the sixth channel is communicated with one end of the heated section of the heat pipe type air preheater, and the other end of the heated section of the heat pipe type air preheater is communicated with the seventh channel; meanwhile, one end of a heat release section of the heat pipe type air preheater is communicated with the first natural air channel, the other end of the heat release section of the heat pipe type air preheater is communicated with the second natural air channel, and the second natural air channel is communicated to the kiln;
a water flow pipeline is arranged in the second channel, the water inlet end of the water flow pipeline penetrates through the pipe wall of the second channel and is communicated with a cold water tank, and the water outlet end of the water flow pipeline penetrates through the pipe wall of the second channel and is communicated with a hot water insulation box;
the third channel, the fifth channel, the sixth channel, the seventh channel and the latent heat channel are all provided with the filtering device.
And a residual heat flow port is formed in the pipe wall of the fourth channel and communicated to the heat collecting station through the latent heat channel.
The utility model is provided with the filtering devices in the multi-section flue gas sensible heat channel, so that the flue gas can be subjected to multi-stage filtration in the process of circulation, thereby improving the effect of eliminating harmful substances contained in the flue gas, improving the purity of the flue gas discharged into the air and being beneficial to environmental protection;
in addition, in the process of discharging the flue gas, the flue gas with the waste heat firstly passes through the water flow pipeline, the cold water introduced into the water flow pipeline is heated into hot water by utilizing the flue gas waste heat, and the flue gas waste heat is recycled for the first time;
in the flowing process of the flue gas, a part of the flue gas latent heat which is recycled for the first time enters the heat collecting station through the latent heat channel, so that the flue gas latent heat can be applied to life or industrial production; meanwhile, the other part of latent heat is returned to the kiln again through the heat pipe type air preheater for secondary utilization;
to sum up, the utility model discloses successively carried out multiple recovery mode to the flue gas waste heat, improved the recycle ratio to the flue gas waste heat greatly, energy saving, simultaneously, the utility model discloses through multistage flue gas waste heat treatment process and multistage filtration processing, make the low and pollution-free of flue gas temperature who discharges to the air at last, do benefit to the protection of environment.
Preferably, the first channel, the second channel, the third channel, the fourth channel, the fifth channel and the sixth channel are sequentially connected by flanges, and a U-shape is formed among the first channel, the second channel, the third channel, the fourth channel, the fifth channel, the sixth channel and the seventh channel.
The utility model discloses a will the first passageway the second passageway the third pass through the fourth passageway the fifth passageway the sixth passageway with constitute "U" font between the seventh passageway, not only can reduce the utility model discloses shared space can increase the circulation distance of flue gas in the passageway moreover, improves the edulcoration treatment effeciency and the edulcoration effect of flue gas waste heat, guarantees that the flue gas that flows can not the polluted environment and can not cause the injury to equipment.
Preferably, an opening at one end of the first natural air channel is communicated with one end of the heat release section of the heat pipe type air preheater, a blower is arranged at the other end of the first natural air channel, and a natural air inlet is reserved between the other end of the first natural air channel and the blower, so that external natural air can flow into the first natural air channel from the natural air inlet, and the circulation rate of the natural air is increased by the blower.
Preferably, the water flow pipeline is wavy, so that the contact area between the flue gas waste heat and the water flow pipeline is increased, the heating speed of water flow is increased, and the utilization rate of the flue gas waste heat is increased.
Preferably, the filtering device is ladder-shaped and comprises two supporting rods and a plurality of filtering layers, the two supporting rods are arranged in parallel, and the plurality of filtering layers are fixed between the two supporting rods in parallel.
Thereby the utility model discloses can be convenient for settle and pick up in the pipeline filter equipment to be convenient for right filter equipment changes and handles.
Preferably, it is a plurality of the filter layer includes lime adsorbed layer, activated carbon adsorption layer, soil filter layer and sodium hydroxide absorbed layer, thereby the utility model discloses a sulfur oxide in the lime adsorbed layer absorption flue gas can adsorb the granule in the flue gas through the activated carbon adsorption layer, can filter the nitrogen oxide in the flue gas through the soil filter layer, can absorb the acid gas in the flue gas through the sodium hydroxide absorbed layer.
Preferably, threaded holes are respectively formed in two ends of the supporting rod, the supporting rod is matched with bolts through the threaded holes, and the supporting rod is respectively and correspondingly connected with the third channel, the fifth channel, the sixth channel, the seventh channel and the tube wall of the latent heat channel in a fixed mode. Thereby the utility model discloses can increase the stability of filter equipment in each passageway.
Preferably, two still be provided with the filter screen between the bracing piece, the filter screen sets up the bottom of filter layer, thereby the utility model discloses can pass through the filter screen filters the dust that mix with in the flue gas.
Preferably, the water cooling system further comprises a support, and the cold water tank is arranged on the support.
Can know via foretell technical scheme, compare with prior art, the utility model discloses a flue gas waste heat recovery device of industrial kiln can realize following technological effect:
① the utility model is provided with a filtering device in the multi-section flue gas sensible heat channel, so that the flue gas will be filtered in multi-stage in the process of circulation, thereby improving the eliminating effect of harmful substances in the flue gas, improving the purity of the flue gas discharged into the air, and being beneficial to the environmental protection;
② the utility model discloses successively carried out multiple recovery mode to the flue gas waste heat, improved the recycle ratio to the flue gas waste heat greatly, energy saving, simultaneously, the utility model discloses through multistage flue gas waste heat treatment process and multistage filtration processing, make the flue gas temperature who discharges to the air at last low and pollution-free, do benefit to the protection of environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of the flue gas waste heat recovery device of the industrial kiln of the present invention;
fig. 2 is the utility model discloses a cross-sectional view of industrial kiln flue gas waste heat recovery device's filter equipment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an industrial kiln flue gas waste heat recovery device, through the multiple layer filtering, improve the elimination effect to harmful substance in the flue gas, reduce the harmful substance that the flue gas that discharges to in the air contained, do benefit to the protection of environment, simultaneously the utility model discloses carry out multiple recovery processing to the flue gas waste heat, improved the recycle ratio to the flue gas waste heat.
The embodiment of the utility model discloses an industrial kiln flue gas waste heat recovery device, which comprises a water flow pipeline 1, a filtering device 2, a latent heat channel 3, a first natural air channel 4, a second natural air channel 5, a heat pipe type air preheater 6 and a multi-section flue gas sensible heat channel;
the flue gas sensible heat channel comprises a first channel 71, a second channel 72, a third channel 73, a fourth channel 74, a fifth channel 75, a sixth channel 76 and a seventh channel 77 which are communicated in sequence;
one end of the first channel 71 is open and communicated with the flue of the kiln 70, and the other end of the first channel is open and communicated with the second channel 72; one end of the sixth channel 76 is communicated with the fifth channel 75, the other end is communicated with one end of the heated section 61 of the heat pipe type air preheater 6, and the other end of the heated section 61 of the heat pipe type air preheater 6 is communicated with the seventh channel 77; meanwhile, one end of the heat release section 62 of the heat pipe type air preheater 6 is communicated with the first natural air channel 4, the other end is communicated with the second natural air channel 5, and the second natural air channel 5 is communicated to the kiln 70;
a water flow pipeline 1 is arranged in the second channel 72, a water inlet end 10 of the water flow pipeline 1 penetrates through the pipe wall of the second channel 72 to be communicated with a cold water tank 8, and a water outlet end 11 of the water flow pipeline 1 penetrates through the pipe wall of the second channel 72 to be communicated with a hot water insulation box 9;
the third passage 73, the fifth passage 75, the sixth passage 76, the seventh passage 77, and the latent heat passage 3 are provided therein with the filter device 2.
The wall of the fourth channel 74 is provided with a residual heat circulation port 741, and the residual heat circulation port 741 is communicated to the heat collecting station 101 through the latent heat channel 3.
In order to further optimize the technical scheme, the first channel 71, the second channel 72, the third channel 73, the fourth channel 74, the fifth channel 75 and the sixth channel 76 are sequentially connected through flanges, and a U-shape is formed among the first channel 71, the second channel 72, the third channel 73, the fourth channel 74, the fifth channel 75, the sixth channel 76 and the seventh channel 77.
In order to further optimize the above technical solution, an opening at one end of the first natural air channel 4 is communicated with one end of the heat releasing section 62 of the heat pipe type air preheater 6, the other end is provided with the blower 40, and a natural air inlet 400 is left between the other end of the first natural air channel 4 and the blower 40.
In order to further optimize the above technical solution, the water flow pipe 1 is wavy.
In order to further optimize the above technical solution, the filtering device 2 is ladder-shaped, and includes two supporting rods 21 and a plurality of filtering layers, and two supporting rods 21 are arranged in parallel, and a plurality of filtering layers are fixed in parallel between two supporting rods 21.
In order to further optimize the above technical solution, the plurality of filter layers include a lime adsorption layer 22, an activated carbon adsorption layer 23, a soil filtration layer 24, and a sodium hydroxide adsorption layer 25.
In order to further optimize the above technical solution, two ends of the support rod 21 are respectively provided with a threaded hole 211, and the support rod 21 is matched with a bolt through the threaded hole 211 and is respectively and correspondingly fixedly connected with the tube walls of the third channel 73, the fifth channel 75, the sixth channel 76, the seventh channel 77 and the latent heat channel 3.
In order to further optimize the above technical solution, a filter screen 26 is further disposed between the two support rods 21, and the filter screen is disposed at the bottom of the filter layer.
In order to further optimize the technical scheme, the water cooling system further comprises a support 901, and a cold water tank 8 is arranged on the support 901.
Example (b):
one port of the first channel 71 is arranged in a flue of the kiln, the other end of the first channel is sequentially connected with a second channel 72, a third channel 73, a fourth channel 74, a fifth channel 75 and a sixth channel 76 through flanges, the sixth channel 76 is communicated with one end of the heated section 61 of the heat pipe type air preheater 6, and the other end of the heated section 61 of the heat pipe type air preheater 6 is communicated with a seventh channel 77; meanwhile, one end of the heat release section 62 of the heat pipe type air preheater 6 is communicated with the first natural air channel 4, the other end is communicated with one end of the second natural air channel 5, the other end of the second natural air channel 5 is communicated to the kiln 70, the other end of the first natural air channel 4 is provided with a blower 40, and a natural air inlet 400 is reserved between the other end of the first natural air channel 4 and the blower 40;
a water flow pipeline 1 is arranged in the second channel 72, a water inlet end 10 of the water flow pipeline 1 penetrates through the pipe wall of the second channel 72 to be communicated with a cold water tank 8, and a water outlet end 11 of the water flow pipeline 1 penetrates through the pipe wall of the second channel 72 to be communicated with a hot water insulation box 9;
the third channel 73, the fifth channel 75, the sixth channel 76, the seventh channel 77 and the latent heat channel 3 are all provided with the filter device 2; the filter device 2 is ladder-shaped and comprises two support rods 21 and a plurality of filter layers, the two support rods 21 are arranged in parallel, the plurality of filter layers are fixed between the two support rods 21 in parallel, and the support rods 21 are respectively fastened and connected with the third channel 73, the fifth channel 75, the sixth channel 76, the seventh channel 77 and the tube wall of the latent heat channel 3 through bolts; the plurality of filter layers comprise a lime adsorption layer 22, an activated carbon adsorption layer 23, a soil filtration layer 24 and a sodium hydroxide adsorption layer 25, a filter screen 26 is further arranged between the two support rods 21, and the filter screen is arranged at the bottom of the filter layers.
The top of the fourth channel 74 is provided with a residual heat circulation port 741, and the residual heat circulation port 741 is communicated to the heat collecting station 101 through the latent heat channel 3.
The utility model discloses all set up filter equipment 2 in multistage flue gas sensible heat passageway, the in-process that makes the flue gas circulate will be through multi-stage filtration, adsorb the oxysulfide in the flue gas through lime adsorbed layer 22, can adsorb the granule in the flue gas through activated carbon adsorption layer 23, can filter the nitrogen oxide in the flue gas through soil filtration layer 24, can absorb the acid gas in the flue gas through sodium hydroxide adsorbed layer 25, and filter the dust that mix with in the flue gas through filter screen 26, thereby improve the elimination effect to the harmful substance that contains in the flue gas, improved the purity that the flue gas was arranged to the air, be favorable to the protection of environment and equipment;
in addition, in the process of discharging the flue gas, the flue gas with the waste heat firstly passes through the water flow pipeline 1, the cold water introduced into the water flow pipeline 1 is heated into hot water by utilizing the waste heat of the flue gas, and the waste heat of the flue gas is recycled for the first time;
in the flowing process of the flue gas, a part of the flue gas latent heat which is recycled for the first time enters the heat collecting station 101 through the latent heat channel 3, so that the flue gas latent heat can be applied to life or industrial production; meanwhile, the other part of latent heat is returned to the kiln 70 through the heat pipe type air preheater 6 for secondary utilization;
the heat pipe type air preheater 6 is used for preheating combustion air of the boiler or other drying purposes by utilizing heat energy carried by flue gas at the outlet of the boiler through the superconducting heat transfer of a heat pipe, and can be structurally a middle pipeline liquid, an interlayer between the middle pipeline and an outer pipe is steam, and the flowing directions of the steam and the liquid are opposite; and fins can be arranged on the outer side of the appearance, the heat release section is communicated with the heated section, and a heat insulation plate is arranged between the heat release section and the heated section.
To sum up, the utility model discloses successively carried out multiple recovery mode to the flue gas waste heat, improved the recycle ratio to the flue gas waste heat greatly, energy saving, simultaneously, the utility model discloses through multistage flue gas waste heat treatment process and multistage filtration processing, make the low and pollution-free of flue gas temperature who discharges to the air at last, do benefit to the protection of environment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The industrial kiln flue gas waste heat recovery device is characterized by comprising a water flow pipeline (1), a filtering device (2), a latent heat channel (3), a first natural air channel (4), a second natural air channel (5), a heat pipe type air preheater (6) and a multi-section flue gas sensible heat channel;
the flue gas sensible heat channel comprises a first channel (71), a second channel (72), a third channel (73), a fourth channel (74), a fifth channel (75), a sixth channel (76) and a seventh channel (77) which are communicated in sequence;
one end opening of the first channel (71) is communicated with a flue of a kiln (70), and the other end opening is communicated with the second channel (72); one end of the sixth channel (76) is communicated with the fifth channel (75), the other end of the sixth channel is communicated with one end of the heated section (61) of the heat pipe type air preheater (6), and the other end of the heated section (61) of the heat pipe type air preheater (6) is communicated with the seventh channel (77); meanwhile, one end of a heat release section (62) of the heat pipe type air preheater (6) is communicated with the first natural air channel (4), the other end of the heat release section is communicated with the second natural air channel (5), and the second natural air channel (5) is communicated to a kiln (70);
a water flow pipeline (1) is arranged in the second channel (72), a water inlet end (10) of the water flow pipeline (1) penetrates through the pipe wall of the second channel (72) to be communicated with a cold water tank (8), and a water outlet end (11) of the water flow pipeline (1) penetrates through the pipe wall of the second channel (72) to be communicated with a hot water insulation box (9);
the third channel (73), the fifth channel (75), the sixth channel (76), the seventh channel (77) and the latent heat channel (3) are all provided with the filtering device (2);
and a residual heat flow port (741) is formed in the pipe wall of the fourth channel (74), and the residual heat flow port (741) is communicated to the heat collecting station (101) through the latent heat channel (3).
2. The industrial kiln flue gas waste heat recovery device according to claim 1, wherein the first channel (71), the second channel (72), the third channel (73), the fourth channel (74), the fifth channel (75) and the sixth channel (76) are sequentially connected through flanges, and a U-shaped structure is formed among the first channel (71), the second channel (72), the third channel (73), the fourth channel (74), the fifth channel (75), the sixth channel (76) and the seventh channel (77).
3. The industrial kiln flue gas waste heat recovery device according to claim 1, wherein one end of the first natural air channel (4) is open and communicated with one end of the heat release section (62) of the heat pipe type air preheater (6), the other end is provided with a blower (40), and a natural air inlet (400) is reserved between the other end of the first natural air channel (4) and the blower (40).
4. The industrial kiln flue gas waste heat recovery device according to claim 1, wherein the water flow pipeline (1) is wavy.
5. The industrial kiln flue gas waste heat recovery device according to claim 1, wherein the filtering device (2) is ladder-shaped and comprises two supporting rods (21) and a plurality of filtering layers, the two supporting rods (21) are arranged in parallel, and the plurality of filtering layers are fixed between the two supporting rods (21) in parallel.
6. The industrial kiln flue gas waste heat recovery device according to claim 5, wherein the plurality of filter layers comprise a lime adsorption layer (22), an activated carbon adsorption layer (23), a soil filter layer (24) and a sodium hydroxide adsorption layer (25).
7. The industrial kiln flue gas waste heat recovery device according to claim 5, wherein threaded holes (211) are respectively formed in two ends of the support rod (21), and bolts are matched with the support rod (21) through the threaded holes (211) and are respectively and correspondingly fixedly connected with the third channel (73), the fifth channel (75), the sixth channel (76), the seventh channel (77) and the wall of the latent heat channel (3).
8. The industrial kiln flue gas waste heat recovery device according to claim 5, characterized in that a filter screen (26) is arranged between the two support rods (21), and the filter screen is arranged at the bottom of the filter layer.
9. The industrial kiln flue gas waste heat recovery device according to claim 1, characterized by further comprising a support (901), wherein the cold water tank (8) is arranged on the support (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920668896.9U CN210922233U (en) | 2019-05-10 | 2019-05-10 | Flue gas waste heat recovery device for industrial kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920668896.9U CN210922233U (en) | 2019-05-10 | 2019-05-10 | Flue gas waste heat recovery device for industrial kiln |
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| CN210922233U true CN210922233U (en) | 2020-07-03 |
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| CN201920668896.9U Active CN210922233U (en) | 2019-05-10 | 2019-05-10 | Flue gas waste heat recovery device for industrial kiln |
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