CN218723237U - Waste heat recovery device for kiln - Google Patents
Waste heat recovery device for kiln Download PDFInfo
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- CN218723237U CN218723237U CN202223034738.9U CN202223034738U CN218723237U CN 218723237 U CN218723237 U CN 218723237U CN 202223034738 U CN202223034738 U CN 202223034738U CN 218723237 U CN218723237 U CN 218723237U
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Abstract
The utility model discloses a waste heat recovery device for a kiln, which comprises a primary recovery box body, a secondary recovery box body, an exhaust fan and a dehumidifying fan; a plurality of first heat exchange tubes are arranged in the primary recovery box body, one end of each first heat exchange tube is communicated with an indoor air inlet tube, and the other end of each first heat exchange tube is communicated with a connecting tube; the upper part of the primary recovery box body is communicated with a moisture-removing air outlet pipe, and a moisture-removing air outlet is arranged below the primary recovery box body; a plurality of second heat exchange tubes are arranged in the secondary recovery box body, one ends of the second heat exchange tubes are communicated with the connecting tube, and the other ends of the second heat exchange tubes are communicated with a hot air tube; one end of the second-stage recovery box body is communicated with the smoke exhaust air inlet pipe, and the other end of the second-stage recovery box body is provided with a smoke exhaust air outlet pipe. The utility model adopts the primary recovery box body to recover the hot air exhausted from each drying room and preheat the indoor air entering the first heat exchange pipe; the second-level recovery box body is adopted to recover hot flue gas exhausted during combustion of the kiln, and indoor air is used after secondary heating, so that energy waste is greatly reduced.
Description
Technical Field
The utility model relates to a waste heat recovery field especially relates to a waste heat recovery device for kiln.
Background
When the denitration catalyst is produced, primary drying, secondary drying and sintering are needed, the temperature of flue gas in a primary drying room and a secondary drying room during moisture removal and kiln burning can reach 200 ℃, and the waste heat is directly discharged to the outside, so that the waste heat waste problem is caused, and the climate balance of the atmosphere is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a waste heat recovery device for kiln.
The utility model has the innovation points that the primary recovery box body is adopted to recover hot air exhausted from each drying room and preheat indoor air entering the first heat exchange pipe; the hot flue gas discharged during the burning of kiln is retrieved to the box is retrieved to the adoption second grade to indoor wind after preheating carries out the secondary heating back and uses, has greatly reduced the waste of the energy.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
a waste heat recovery device for a kiln comprises a primary recovery box body, a secondary recovery box body, an exhaust fan and a dehumidifying fan; a plurality of first heat exchange tubes are horizontally arranged in the primary recovery box body, an indoor air inlet tube communicated with one ends of the first heat exchange tubes is arranged at one end of the primary recovery box body, and a connecting tube communicated with the other ends of the first heat exchange tubes is arranged at the other end of the primary recovery box body; the upper part of the primary recovery box body is communicated with a dehumidifying air outlet pipe of the drying room, the lower part of the primary recovery box body is provided with a dehumidifying air outlet, and the dehumidifying fan is communicated with the dehumidifying air outlet; a plurality of second heat exchange tubes are vertically arranged in the secondary recovery box body along the length direction of the secondary recovery box body, one ends of the second heat exchange tubes are communicated with the connecting tube, the other ends of the second heat exchange tubes are communicated with a hot air pipe, and the hot air pipe is communicated with an air inlet of the exhaust fan;
one end of the secondary recovery box body is communicated with a smoke exhaust air inlet pipe of the kiln, and the other end of the secondary recovery box body is provided with a smoke exhaust air outlet pipe. A primary recovery box body is adopted to recover hot air exhausted from each drying room, and indoor air entering a first heat exchange pipe is preheated; the hot flue gas discharged during the burning of kiln is retrieved to the box is retrieved to the adoption second grade to indoor wind after preheating carries out the secondary heating back and uses, has greatly reduced the waste of the energy.
Preferably, a plurality of third heat exchange tubes are vertically arranged in the secondary recovery box body, a baffle box is arranged outside one side of the secondary recovery box body away from the connecting tube, and the baffle box is respectively communicated with the plurality of second heat exchange tubes and the plurality of third heat exchange tubes; the hot air pipe and the connecting pipe are located on the same side, and the hot air pipe is communicated with one end, far away from the baffle box, of the third heat exchange pipe. Adopt baffle box and third heat exchange tube, change the flow direction of the interior air of second heat exchange tube to heat once more, heat many times, improve heat recovery efficiency, greatly reduced the waste of the energy.
Preferably, the inner side walls of the smoke exhaust air inlet pipe, the moisture exhaust air outlet pipe and the hot air pipe are respectively provided with continuous bulges along the length direction. The continuous bulges can guide hot air to the middle parts of all pipelines, and the heat loss caused by the contact of the hot air and the pipe wall is reduced.
Preferably, a filter screen is arranged in the smoke exhaust air inlet pipe. The hot flue gas discharged by the kiln contains a large amount of dust particles, and the dust particles in the hot flue gas can be filtered in advance by the aid of the filter screen.
Preferably, an elastic sheet is vertically arranged in the smoke exhaust air inlet pipe, one end of the elastic sheet is connected with the inner side wall of the smoke exhaust air inlet pipe, the other end of the elastic sheet is suspended, and the elastic sheet is positioned on one side, close to the secondary recovery box body, of the filter screen; the side wall of the smoke exhaust air inlet pipe is provided with a discharge hole below the filter screen, and the smoke exhaust air inlet pipe is connected with a collection box at the discharge hole through a bolt. When hot flue gas passes through the elastic sheet, the elastic sheet is stirred, when no hot flue gas flows in the exhaust air inlet pipe, the elastic sheet is restored to an initial state, the suspended end beats the filter screen, and dust particles on the filter screen are beaten down into the collection box for collection; the filter screen blockage is reduced, and the working efficiency of the filter screen is improved.
The beneficial effects of the utility model are that:
1. a primary recovery box body is adopted to recover hot air exhausted from each drying room, and indoor air entering a first heat exchange pipe is preheated; the hot flue gas discharged during the burning of kiln is retrieved to the box is retrieved to the adoption second grade to carry out the postsecondary heating to the indoor wind after preheating and recycle, greatly reduced the waste of the energy.
2. Be equipped with baffling case and third heat exchange tube, can change the flow direction of wind in the heat exchange tube for wind realizes heating many times at second grade waste heat recovery incasement internal rotation, and then makes the heat of retrieving more.
3. The filter screen can be used for filtering dust particles in hot smoke in the smoke exhaust air inlet pipe, and the elastic pieces can be used for beating the dust particles on the filter screen, so that the blockage of the filter screen is reduced; the collecting box can collect dust particles falling from the filter screen, and the collecting box is connected through the bolt, so that the collected dust particles can be processed at any time.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure:
1. a primary recovery box body; 11. an indoor air inlet pipe; 12. a connecting pipe; 13. a moisture-removing air outlet pipe; 14. a moisture-removing air outlet; 2. a secondary recovery box body; 21. a hot air pipe; 22. a baffle box; 23. a smoke exhaust air inlet pipe; 24. a smoke exhaust air outlet pipe; 3. a first heat exchange tube; 4. a second heat exchange tube; 5. a third heat exchange tube; 6. a protrusion; 7. a filter screen; 8. a spring plate; 9. a collection box; 10. a discharge hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a waste heat recovery device for a kiln comprises a primary recovery box body 1, a secondary recovery box body 2, an exhaust fan and a dehumidifying fan. The horizontal a plurality of first heat exchange tubes 3 that are equipped with in the box 1 is retrieved to the one-level, and the one end that the box 1 was retrieved to the one-level is equipped with the indoor air-supply line 11 with a plurality of first heat exchange tubes 3 intercommunication, and the other end that the box 1 was retrieved to the one-level is equipped with the connecting pipe 12 with a plurality of first heat exchange tubes 3 other end intercommunication, and the top that the box 1 was retrieved to the one-level is equipped with the hydrofuge tuber pipe 13 intercommunication of baking house, and the below is equipped with hydrofuge air outlet 14, and the air intake and the hydrofuge air outlet 14 intercommunication of hydrofuge fan.
As shown in fig. 1, one end of the secondary recovery box body 2 is communicated with a smoke exhaust air inlet pipe 23 of the kiln, the other end is provided with a smoke exhaust air outlet pipe 24, and one end of the smoke exhaust air outlet pipe 24 far away from the secondary recovery box body 2 is communicated with a bag-type dust remover; a plurality of second heat exchange tubes 4 and a plurality of third heat exchange tubes 5 are vertically arranged in the secondary recovery box body 2, the second heat exchange tubes 4 are close to the smoke exhaust air inlet tube 23, and the third heat exchange tubes 5 are close to the smoke exhaust air outlet tube 24; the lower end of the second heat exchange tube 4 is communicated with the connecting tube 12, the lower end of the third heat exchange tube 5 is communicated with a hot air pipe 21, and the hot air pipe 21 is communicated with an air inlet of an exhaust fan. A baffling box 22 communicated with the second heat exchange tubes 4 and the third heat exchange tubes 5 is arranged above the outside of the second-stage recovery box body 2.
As shown in fig. 1, the inner side walls of the smoke exhaust air inlet pipe 23, the moisture exhaust air outlet pipe 13 and the hot air pipe 21 are respectively provided with continuous protrusions 6 along the length direction thereof.
As shown in fig. 1, a filter screen 7 and a spring plate 8 are arranged in the smoke exhaust air inlet pipe 23, the spring plate 8 is located on one side of the filter screen 7 close to the secondary recovery box body 2, one end of the spring plate 8 is connected with the inner side wall of the smoke exhaust air inlet pipe 23, and the other end is suspended. The side wall of the smoke exhaust air inlet pipe 23 is provided with a plurality of exhaust holes 10 which are positioned below the filter screen 7, the smoke exhaust air inlet pipe 23 is externally connected with a collection box 9 through bolts, and the collection box 9 is positioned at the exhaust holes.
In view of the above, it is desirable to provide,
the moisture exhaust fan works to pump the waste heat in the drying room into the primary recovery box body 1 through the moisture exhaust air outlet pipe 13; the air exhauster work, in retrieving box 2 with the hot flue gas of kiln to the second grade through the air inlet pipe 23 suction of discharging fume, in passing through indoor air inlet pipe 11 suction to first heat exchange tube 3 with indoor new trend, waste heat in the baking house preheats the new trend in to first heat exchange tube 3, the hot-blast second heat exchange tube 4 that enters into in proper order after preheating, baffling case 22, in the third heat exchange tube 5, at this moment, the hot flue gas of kiln is to second heat exchange tube 4, the hot-blast reheating back that preheats in the third heat exchange tube 5 is used, the waste of the energy has been reduced to a great extent.
The embodiments described are only a part of the embodiments of the present invention, and not all of the 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.
Claims (5)
1. A waste heat recovery device for a kiln, which is characterized in that,
comprises a primary recovery box body, a secondary recovery box body, an exhaust fan and a dehumidifying fan;
a plurality of first heat exchange tubes are horizontally arranged in the primary recovery box body, an indoor air inlet tube communicated with one ends of the first heat exchange tubes is arranged at one end of the primary recovery box body, and a connecting tube communicated with the other ends of the first heat exchange tubes is arranged at the other end of the primary recovery box body;
the upper part of the primary recovery box body is communicated with a dehumidifying air outlet pipe of the drying room, the lower part of the primary recovery box body is provided with a dehumidifying air outlet, and the dehumidifying fan is communicated with the dehumidifying air outlet;
a plurality of second heat exchange tubes are vertically arranged in the secondary recovery box body along the length direction of the secondary recovery box body, one ends of the second heat exchange tubes are communicated with the connecting tube, the other ends of the second heat exchange tubes are communicated with a hot air pipe, and the hot air pipe is communicated with an air inlet of the exhaust fan;
one end of the secondary recovery box body is communicated with a smoke exhaust air inlet pipe of the kiln, and the other end of the secondary recovery box body is provided with a smoke exhaust air outlet pipe.
2. The waste heat recovery device for a kiln according to claim 1,
a plurality of third heat exchange tubes are vertically arranged in the secondary recovery box body, a baffling box is arranged outside one side of the secondary recovery box body, which is far away from the connecting tube, and the baffling box is respectively communicated with the plurality of second heat exchange tubes and the plurality of third heat exchange tubes;
the hot air pipe and the connecting pipe are located on the same side, and the hot air pipe is communicated with one end, far away from the baffle box, of the third heat exchange pipe.
3. The waste heat recovery device for a kiln according to claim 1,
and continuous bulges are respectively arranged on the inner side walls of the smoke exhaust air inlet pipe, the moisture exhaust air outlet pipe and the hot air pipe along the length direction of the inner side walls.
4. The waste heat recovery device for a kiln according to claim 3,
a filter screen is arranged in the smoke exhaust air inlet pipe.
5. The waste heat recovery device for a kiln as claimed in claim 4,
an elastic sheet is vertically arranged in the smoke exhaust air inlet pipe, one end of the elastic sheet is connected with the inner side wall of the smoke exhaust air inlet pipe, the other end of the elastic sheet is suspended, and the elastic sheet is positioned on one side of the filter screen close to the secondary recovery box body;
the side wall of the smoke exhaust air inlet pipe is provided with a plurality of exhaust holes below the filter screen, and the smoke exhaust air inlet pipe is externally connected with a collecting box at the exhaust holes through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223034738.9U CN218723237U (en) | 2022-11-15 | 2022-11-15 | Waste heat recovery device for kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223034738.9U CN218723237U (en) | 2022-11-15 | 2022-11-15 | Waste heat recovery device for kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218723237U true CN218723237U (en) | 2023-03-24 |
Family
ID=85618593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223034738.9U Active CN218723237U (en) | 2022-11-15 | 2022-11-15 | Waste heat recovery device for kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218723237U (en) |
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2022
- 2022-11-15 CN CN202223034738.9U patent/CN218723237U/en active Active
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