CN217209434U - Low-temperature flue gas heat recovery system - Google Patents
Low-temperature flue gas heat recovery system Download PDFInfo
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- CN217209434U CN217209434U CN202220901764.8U CN202220901764U CN217209434U CN 217209434 U CN217209434 U CN 217209434U CN 202220901764 U CN202220901764 U CN 202220901764U CN 217209434 U CN217209434 U CN 217209434U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a low temperature flue gas heat recovery system, including the heat collection tower, the side surface fixedly connected with of heat collection tower advances the tobacco pipe, the inside fixedly connected with rose box of heat collection tower, it is linked together with the rose box to advance the tobacco pipe, the side surface fixedly connected with of heat collection tower goes out the tobacco pipe, the top fixedly connected with water spray tray of heat collection tower, the lower fixed surface of water spray tray is connected with the shower nozzle, the last fixed surface of water spray tray is connected with the spray pipe, the side surface fixedly connected with heat transfer case of heat collection tower. The utility model discloses, through being provided with sprinkler bead and shower nozzle, through spraying twice to the heat that makes the flue gas replaces fast to the aquatic and preserves, thereby guarantees that heat exchange is thorough, through the dog with return the effect of saying, hinders the circulation of inside material, thereby makes the inside material persistence time extension, makes the heat transfer more thorough.
Description
Technical Field
The utility model relates to a heat recovery field especially relates to a low temperature flue gas heat recovery system.
Background
At present, the situation that the utilization efficiency of energy in China is low, economic benefit is poor, technology and management of an energy utilization system are backward is not fundamentally changed, unit energy consumption of a plurality of products is greatly different from that of developed countries, unit energy consumption of main industrial products in industries such as steel, power generation, building materials, chemical engineering and the like is 20% -80%, especially heat efficiency of various industrial kilns is much lower than 70%, smoke exhaust temperature is 150-500 ℃, heat value of exhausted waste gas accounts for more than 20% of total energy consumption of the kilns, and waste heat utilization rate of the waste gas is only 4-5%, so that serious waste of energy is caused.
The existing technical means for utilizing the waste heat of the power station generally comprises the following steps: the mode of installing flue gas cooler additional at boiler afterbody flue utilizes afterbody flue gas waste heat heating steam turbine condensate water in order to improve the hot economic nature of unit, and with regard to the technical scheme who installs flue gas cooler additional, there are two kinds of modes: one is that the flue gas cooler is arranged behind the electric dust remover; and the other is that the flue gas cooler is arranged in front of the electric dust remover.
When the applicant applies the invention, through search, the inventor finds that a Chinese patent discloses a low-temperature flue gas waste heat recovery system of a power plant, the application number of the system is '202121458298.2', and the system performs heat exchange through the matching of a first-stage heat recoverer and a second-stage heat recoverer.
But still have the following problems;
1. the heat exchange adopts primary heat exchange, so that the flue gas and a heat exchange medium directly exchange heat, the heat exchange efficiency is low, and the heat loss is large.
2. The heat exchange is incomplete and the loss is large due to the fact that the inside circulation speed is high and the heat cannot be dissipated at the center.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a low-temperature flue gas heat recovery system.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a low-temperature flue gas heat recovery system comprises a heat collection tower, wherein a side surface of the heat collection tower is fixedly connected with a smoke inlet pipe, the interior of the heat collection tower is fixedly connected with a filter box, the smoke inlet pipe is communicated with the filter box, and a side surface of the heat collection tower is fixedly connected with a smoke outlet pipe;
the top end of the heat collection tower is fixedly connected with a water spray disc, the lower surface of the water spray disc is fixedly connected with a spray head, the upper surface of the water spray disc is fixedly connected with a water spray pipe, the side surface of the heat collection tower is fixedly connected with a heat exchange box, a flow channel is arranged in the heat exchange box, a stop block is fixedly connected in the flow channel, and the flow channel is divided into a straight flow channel and a return channel by the stop block;
the heat exchanger is characterized in that a heat exchange cavity is arranged inside the heat exchange box, a recovery box is fixedly connected to the side surface of the heat exchange box, the recovery box is communicated with the flow passage, a water pump is fixedly connected inside the recovery box, and the output end of the water pump is communicated with the water spray pipe.
As a further description of the above technical solution:
the outlet of the smoke outlet pipe is fixedly connected with a heat absorption box, and the internal structure of the heat absorption box is the same as that of the recycling box.
As a further description of the above technical solution:
the heat absorption box is communicated with the heat exchange cavity in the recovery box through a communicating pipe, and a water inlet is fixedly connected to the side surface of the heat absorption box.
As a further description of the above technical solution:
and a water outlet is formed in the side surface of the recovery box and communicated with the heat exchange cavity.
As a further description of the above technical solution:
the lower surface of the water spraying disc is fixedly connected with a connecting rod, and one end of the connecting rod, which is far away from the water spraying disc, is fixedly connected with a water spraying head.
As a further description of the above technical solution:
the return passage is C-shaped, and the two stop blocks are distributed on two sides of the straight passage.
As a further description of the above technical solution:
the inner surface of the heat collecting tower is fixedly connected with heat insulation cotton, and the surface of the heat insulation cotton is fixedly connected with heat absorption metal.
As a further description of the above technical solution:
the length of the connecting rod is half of the height of the heat collecting tower.
The utility model discloses following beneficial effect has:
1. compared with the prior art, this low temperature flue gas heat recovery system through being provided with sprinkler bead and shower nozzle, through spraying twice to the heat that makes the flue gas replaces fast to the aquatic and preserves, thereby guarantees that the heat exchange is thorough.
2. Compared with the prior art, this low temperature flue gas heat recovery system, through the dog with return the effect of saying, hinder the circulation of inside material to make the inside material dwell time extension, and stir the water of inside, make the heat transmit, make the heat transfer more thorough, and the hydrologic cycle of heat transfer uses, makes the heat remain wherein, is difficult for losing.
3. Compared with the prior art, the low-temperature flue gas heat recovery system recycles the liquid after heat exchange to the heat collecting tower again through the water pump, so that the substances with incomplete internal heat exchange perform heat exchange again.
Drawings
Fig. 1 is a schematic view of the overall structure of a low-temperature flue gas heat recovery system provided by the present invention;
fig. 2 is a schematic view of an internal structure of a low-temperature flue gas heat recovery system provided by the present invention;
fig. 3 is an enlarged view of a structure a in fig. 2 of the low temperature flue gas heat recovery system provided by the present invention;
fig. 4 is the schematic view of the internal structure of the heat exchange box of the low-temperature flue gas heat recovery system provided by the present invention.
Illustration of the drawings:
1. a heat collection tower; 2. a smoke inlet pipe; 3. a filter box; 4. discharging the smoke tube; 5. a water spray disc; 6. a spray head; 7. a water spray pipe; 8. a heat exchange box; 9. a flow channel; 10. a stopper; 11. a straight flow channel; 12. a return track; 13. a heat exchange cavity; 14. a recycling bin; 15. a water pump; 16. a heat absorption box; 17. a connecting rod; 18. a sprinkler head; 19. heat insulation cotton; 20. a heat absorbing metal.
Detailed Description
The technical contents, the objects to be achieved, and the effects of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1-4, the utility model provides a low temperature flue gas heat recovery system: the heat collecting tower comprises a heat collecting tower 1, heat insulation cotton 19 is fixedly connected to the inner surface of the heat collecting tower 1, the heat inside is isolated, the rapid dissipation of heat is prevented, heat absorption metal 20 is fixedly connected to the surface of the heat insulation cotton 19, the heat of smoke is absorbed, a smoke inlet pipe 2 is fixedly connected to the side surface of the heat collecting tower 1, low-temperature smoke enters, a filter box 3 is fixedly connected to the inside of the heat collecting tower 1, particles inside are filtered, the smoke inlet pipe 2 is communicated with the filter box 3, a smoke outlet pipe 4 is fixedly connected to the side surface of the heat collecting tower 1, smoke after heat exchange is discharged, a heat absorption box 16 is fixedly connected to the outlet of the smoke outlet pipe 4, heat exchange is carried out on the discharged smoke, the heat exchange is more thorough, the internal structure of the heat absorption box 16 is the same as that of a recovery box 14, the heat absorption box 16 is communicated with a heat exchange cavity 13 inside the recovery box 14 through a communication pipe, and heat exchange substances are circulated, the side surface of the heat absorption box 16 is fixedly connected with a water inlet so as to facilitate the inflow of heat exchange substances.
Through being provided with above structure, absorb the heat of flue gas through heat absorption metal 20, leading-in aquatic of spraying simultaneously makes the heat absorb fast to reach quick radiating purpose.
The top fixedly connected with water spray disc 5 of heat collecting tower 1, conveniently spray water, the lower fixed surface of water spray disc 5 is connected with connecting rod 17, the length of connecting rod 17 is the half of heat collecting tower 1 height, form the double-deck heat absorption of long distance, the one end fixedly connected with sprinkler bead 18 of water spray disc 5 is kept away from to connecting rod 17, spray water, the scope of spraying is narrower, the lower fixed surface of water spray disc 5 is connected with shower nozzle 6, the scope of spraying is wide, it is more thorough to atomize, the last fixed surface that carries out water spray disc 5 is connected with spray pipe 7.
Through being provided with above part, can be effectively through spraying twice to the heat that makes the flue gas replaces fast to the aquatic and preserves, thereby guarantees that the heat exchange is thorough.
Side surface fixedly connected with heat exchange box 8 of heat collection tower 1, carry out the heat transfer, the inside of heat exchange box 8 is provided with circulation channel 9, make things convenient for the liquid circulation, the inside fixedly connected with dog 10 of circulation channel 9, it continues to flow to block inside material, circulation channel 9 divide into straight runner 11 and return way 12 through dog 10, return way 12 and the rivers or the air current formation of straight runner 10 and strike, thereby form corresponding impact, it flows to block inside material, the shape that returns way 12 is the C font, dog 10 has two, and the both sides of distribution and straight runner 11.
Through being provided with above part, can hinder the circulation of inside material through the effect of dog 10 with return 12 to make the inside material dwell time extension, make the heat transfer more thorough, and the water cycle of heat transfer uses, makes the heat remain wherein, is difficult for losing.
The inside of heat transfer case 8 is provided with heat transfer chamber 13, carries out the heat transfer, and the side surface fixedly connected with collection box 14 of heat transfer case 8 retrieves the water after the heat transfer, and the side surface of collection box 14 is provided with the delivery port, and the delivery port is linked together with heat transfer chamber 13, and collection box 14 is linked together with circulation passageway 9, and the inside fixedly connected with water pump 15 of collection box 14, the output of water pump 15 is linked together with spray pipe 7.
Through being provided with above part, through water pump 15, the liquid after will exchanging heat circulates once more to the heat collection tower for the material that the inside heat transfer is not thorough carries out the heat transfer once more.
The working principle is as follows: when in use, the low-temperature flue gas enters through the smoke inlet pipe 2, the particles inside are filtered through the filter box 3, then enters the interior of the heat collecting tower 1, the spray head of the water spray disk 5 and the water spray head 18 spray liquid at the same time, the heat in the flue gas is absorbed, meanwhile, the heat absorption metal 20 absorbs the heat of the flue gas and is simultaneously led into the sprayed water, so that the heat is quickly absorbed, and through double spraying, thereby the heat of the flue gas is quickly replaced into the water for storage, thereby ensuring the heat exchange to be thorough, the heat-exchanged flue gas absorbs heat again through the heat absorption box 16, the heat-exchanged liquid exchanges heat through the heat exchange cavity 13, the baffle 10 and the return channel 12 block the circulation of internal substances, so that the retention time of the substances in the heat collecting tower is prolonged, and the heat exchange is more thorough, the water pump 15 circulates the liquid after heat exchange to the heat collecting tower again, and the substances with incomplete internal heat exchange perform heat exchange again.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a low temperature flue gas heat recovery system, includes heat collection tower (1), its characterized in that: the side surface of the heat collection tower (1) is fixedly connected with a smoke inlet pipe (2), the interior of the heat collection tower (1) is fixedly connected with a filter box (3), the smoke inlet pipe (2) is communicated with the filter box (3), and the side surface of the heat collection tower (1) is fixedly connected with a smoke outlet pipe (4);
the top end of the heat collection tower (1) is fixedly connected with a water spray disc (5), the lower surface of the water spray disc (5) is fixedly connected with a spray head (6), the upper surface of the water spray disc (5) is fixedly connected with a water spray pipe (7), the side surface of the heat collection tower (1) is fixedly connected with a heat exchange box (8), a flow channel (9) is arranged inside the heat exchange box (8), the inside of the flow channel (9) is fixedly connected with a stop block (10), and the flow channel (9) is divided into a straight flow channel (11) and a return channel (12) through the stop block (10);
the inside of heat transfer case (8) is provided with heat transfer chamber (13), the side surface fixedly connected with collection box (14) of heat transfer case (8), collection box (14) and circulation way (9) are linked together, the inside fixedly connected with water pump (15) of collection box (14), the output and the spray pipe (7) of water pump (15) are linked together.
2. The low-temperature flue gas heat recovery system of claim 1, wherein: the outlet of the smoke outlet pipe (4) is fixedly connected with a heat absorption box (16), and the internal structure of the heat absorption box (16) is the same as that of the recovery box (14).
3. The low-temperature flue gas heat recovery system of claim 2, wherein: the heat absorption box (16) is communicated with a heat exchange cavity (13) in the recovery box (14) through a communicating pipe, and a water inlet is fixedly connected to the side surface of the heat absorption box (16).
4. The low temperature flue gas heat recovery system of claim 1, wherein: and a water outlet is formed in the side surface of the recovery box (14) and communicated with the heat exchange cavity (13).
5. The low-temperature flue gas heat recovery system of claim 1, wherein: the lower surface of the water spraying disc (5) is fixedly connected with a connecting rod (17), and one end, far away from the water spraying disc (5), of the connecting rod (17) is fixedly connected with a water spraying head (18).
6. The low-temperature flue gas heat recovery system of claim 1, wherein: the return channel (12) is C-shaped, and the two stop blocks (10) are distributed on two sides of the straight flow channel (11).
7. The low-temperature flue gas heat recovery system of claim 1, wherein: the inner surface of the heat collection tower (1) is fixedly connected with heat insulation cotton (19), and the surface of the heat insulation cotton (19) is fixedly connected with heat absorption metal (20).
8. The low-temperature flue gas heat recovery system of claim 5, wherein: the length of the connecting rod (17) is half of the height of the heat collecting tower (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220901764.8U CN217209434U (en) | 2022-04-18 | 2022-04-18 | Low-temperature flue gas heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220901764.8U CN217209434U (en) | 2022-04-18 | 2022-04-18 | Low-temperature flue gas heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217209434U true CN217209434U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220901764.8U Active CN217209434U (en) | 2022-04-18 | 2022-04-18 | Low-temperature flue gas heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217209434U (en) |
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2022
- 2022-04-18 CN CN202220901764.8U patent/CN217209434U/en active Active
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