CN220304354U - Boiler flue gas waste heat utilization system - Google Patents
Boiler flue gas waste heat utilization system Download PDFInfo
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- CN220304354U CN220304354U CN202321582216.4U CN202321582216U CN220304354U CN 220304354 U CN220304354 U CN 220304354U CN 202321582216 U CN202321582216 U CN 202321582216U CN 220304354 U CN220304354 U CN 220304354U
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- flue gas
- heat
- thermoelectric module
- waste heat
- utilization system
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000003546 flue gas Substances 0.000 title claims abstract description 60
- 239000002918 waste heat Substances 0.000 title claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000005678 Seebeck effect Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical class [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 125000003748 selenium group Chemical class *[Se]* 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a boiler flue gas waste heat utilization system, which relates to the technical field of boiler flue gas waste heat utilization and comprises a heat exchange mechanism, a conversion mechanism and a recovery mechanism, wherein the conversion mechanism is arranged at the top of the heat exchange mechanism. According to the utility model, the heat exchange mechanism introduces the high-temperature flue gas of the boiler into the first thermoelectric module after absorbing part of the temperature in the high-temperature flue gas through the heat conducting block, and the second thermoelectric module is in a normal temperature state at the moment, so that a difference thermoelectric potential is formed between the two, the Seebeck effect of the thermoelectric material is utilized, the difference thermoelectric potential generates current, the effect of converting heat energy into electric energy is realized, meanwhile, the first power transmission line and the second power transmission line are connected with the electric storage device, so that the generated electric energy can be stored, the stored electric energy can be used for lighting power supply in a power plant, and the like, thereby avoiding the waste of energy sources and improving the economic benefit of the power plant.
Description
Technical Field
The utility model relates to the technical field of boiler flue gas waste heat utilization, in particular to a boiler flue gas waste heat utilization system.
Background
The boiler flue gas is gas generated in the combustion process and mainly comprises carbon dioxide, sulfur dioxide, nitrogen oxides, water vapor and other components, and the flue gas can generate certain pollution to the environment in the discharge process, for example, sulfur dioxide can cause acid rain, nitrogen oxides can cause photochemical smog, and certain harm can be caused to human bodies and the environment.
At present, the boiler in the thermal power plant usually removes dust and desulphurizes the flue gas generated by burning fuel before discharging, so that the flue gas reaches the discharge standard, but the waste heat in the flue gas of the boiler is ignored along with the treatment of the flue gas, a large amount of waste heat in the flue gas also belongs to one of energy sources, and if the flue gas can be reasonably utilized, the economic benefit of the power plant can be improved, therefore, a novel flue gas waste heat utilization system of the boiler is provided for solving the problems.
Disclosure of Invention
The utility model mainly provides a boiler flue gas waste heat utilization system which can utilize waste heat in boiler flue gas and improve economic benefit of a power plant.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a boiler flue gas waste heat utilization system, includes heat exchange mechanism, conversion mechanism and recovery mechanism, conversion mechanism sets up at heat exchange mechanism's top, recovery mechanism sets up in heat exchange mechanism's below, conversion mechanism includes first thermoelectric module, the rear surface of first thermoelectric module is close to left position electric connection has connecting wire, the rear end electric connection of connecting wire has the second thermoelectric module, the right surface electric connection of second thermoelectric module has first power transmission line, the right surface electric connection of first thermoelectric module has the second power transmission line.
Further, the heat exchange mechanism comprises a channel, the left surface fixed intercommunication of channel has the intake pipe, the fixed intercommunication in top of channel has the exchange shell, the top fixedly connected with heat conduction piece of exchange shell, the top and the first thermoelectric module of heat conduction piece laminate mutually, through setting up the intake pipe with its and boiler flue gas export intercommunication, play the inside effect of introducing the flue gas channel, play the inside thermal effect of absorption exchange shell through setting up the heat conduction piece to transfer the heat for first thermoelectric module.
Further, the communication port has been seted up at the top of passageway, the interior top equidistance of heat conduction piece is provided with a plurality of heat conduction fins, plays the effect that makes the inside flue gas of passageway get into from one side of exchange shell through setting up the communication port, through setting up heat conduction fins in the heat conduction piece bottom, plays the effect that improves heat exchange efficiency.
Further, the recovery mechanism comprises a first conveying pipe, the top end of the first conveying pipe is fixedly communicated with the right surface of the exchange shell, and the first conveying pipe is used for leading out high-temperature flue gas in the exchange shell to a second conveying pipe.
Further, the bottom fixed intercommunication of first conveyer pipe has the second conveyer pipe, second conveyer pipe right-hand member is provided with the air pump, plays through setting up the air pump and blows the inside effect of hollow heat conduction shell with the inside high temperature flue gas that enters into the second conveyer pipe.
Further, the left end face of the second conveying pipe is fixedly communicated with a hollow heat conducting shell, the right surface of the hollow heat conducting shell is fixedly communicated with an exhaust pipe close to the rear surface, the hollow heat conducting shell is used for absorbing heat in high-temperature flue gas, the outer wall of the boiler can be wrapped by the hollow heat conducting shell to transfer the heat to the boiler, and accordingly the temperature of the air in the boiler is raised, combustion supporting effect is achieved, or the air conditioner is arranged below an indoor bottom plate, heating effect is achieved, waste heat in the high-temperature flue gas is effectively utilized, energy is saved, and the exhaust pipe is used for exhausting the utilized flue gas.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. according to the utility model, the heat exchange mechanism introduces the high-temperature flue gas of the boiler into the first thermoelectric module after absorbing part of the temperature in the high-temperature flue gas through the heat conducting block, and the second thermoelectric module is in a normal temperature state at the moment, so that a difference thermoelectric potential is formed between the two, the Seebeck effect of the thermoelectric material is utilized, the difference thermoelectric potential generates current, the effect of converting heat energy into electric energy is realized, meanwhile, the first power transmission line and the second power transmission line are connected with the electric storage device, so that the generated electric energy can be stored, the stored electric energy can be used for illumination power supply in a power plant, and the like, thereby avoiding the waste of energy sources and improving the economic benefit of the power plant.
2. In the utility model, after the high-temperature flue gas absorbs a small amount of heat through the heat conducting block, the high-temperature flue gas entering the second conveying pipe is blown into the hollow heat conducting shell by starting the air pump, at the moment, the hollow heat conducting shell absorbs the heat in the high-temperature flue gas, and the hollow heat conducting shell can be designed to be in a state of wrapping the outer wall of the boiler, so that the heat can be transferred to the boiler to heat the air in the boiler, the combustion supporting effect is achieved, or the air pump is arranged under an indoor bottom plate, the heating effect is achieved, the waste heat in the high-temperature flue gas is effectively utilized, and the energy is saved.
Drawings
Fig. 1 is a perspective view of a boiler flue gas waste heat utilization system according to the present utility model;
FIG. 2 is a schematic diagram of a heat exchange mechanism of a boiler flue gas waste heat utilization system according to the present utility model;
FIG. 3 is a schematic diagram of a conversion mechanism of a boiler flue gas waste heat utilization system according to the present utility model;
fig. 4 is a schematic structural diagram of a recovery mechanism of a boiler flue gas waste heat utilization system according to the present utility model.
Legend description: 1. a heat exchange mechanism; 101. a channel; 102. an air inlet pipe; 103. a communication port; 104. an exchange housing; 105. a heat conduction block; 106. a heat conducting fin; 2. a conversion mechanism; 201. a first thermoelectric module; 202. connecting wires; 203. a second thermoelectric module; 204. a first power line; 205. a second power line; 3. a recovery mechanism; 301. a first delivery tube; 302. a second delivery tube; 303. an air pump; 304. a hollow thermally conductive shell; 305. and an exhaust pipe.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Example 1
As shown in fig. 1-4, the utility model provides a boiler flue gas waste heat utilization system, which comprises a heat exchange mechanism 1, a conversion mechanism 2 and a recovery mechanism 3, wherein the conversion mechanism 2 is arranged at the top of the heat exchange mechanism 1, the recovery mechanism 3 is arranged below the heat exchange mechanism 1, the conversion mechanism 2 comprises a first thermoelectric module 201, the rear surface of the first thermoelectric module 201 is electrically connected with a connecting wire 202 near the left side, the rear end of the connecting wire 202 is electrically connected with a second thermoelectric module 203, the right surface of the second thermoelectric module 203 is electrically connected with a first power line 204, the right surface of the first thermoelectric module 201 is electrically connected with a second power line 205, the heat exchange mechanism 1 comprises a channel 101, the left surface of the channel 101 is fixedly communicated with an air inlet pipe 102, the top of the channel 101 is fixedly communicated with an exchange shell 104, the top of the exchange shell 104 is fixedly connected with a heat conducting block 105, and the top of the heat conducting block 105 is attached to the first thermoelectric module 201.
The effect achieved in the whole embodiment 1 is that the high-temperature flue gas generated after the boiler burns flows upwards after entering the channel 101 through the air inlet pipe 102 and enters the second conveying pipe 302 from the first conveying pipe 301 on the right after entering from the left side of the exchange shell 104 through the communication port 103, at this time, the heat conducting block 105 at the top of the exchange shell 104 absorbs part of the temperature in the high-temperature flue gas and transmits the part of the temperature to the first thermoelectric module 201, the first thermoelectric module 201 and the second thermoelectric module 203 are made of materials with high thermoelectric efficiency, high conductivity and high temperature resistance, the materials are different, the materials can be selected according to practical conditions such as budget, and the like, for example, bismuth-antimony series, iron sulfide series, ferrite series, selenium series and the like, the second thermoelectric module 203 electrically connected through the connecting wire 202 is in a normal temperature state after the first thermoelectric module 201 absorbs a large amount of heat, so that a differential thermoelectric potential is formed, and the Seebeck effect of thermoelectric materials is utilized, so that the effect of converting the heat energy into electric energy is realized, meanwhile, the first thermoelectric module 201 and the second thermoelectric module 205 are connected with the electric storage device, so that the electric energy can be stored, and the energy can be saved, and the economic benefit of the power generating power plant can be improved.
Example 2
As shown in fig. 1-4, the top of the channel 101 is provided with a communication port 103, the inner top of the heat conducting block 105 is equidistantly provided with a plurality of heat conducting fins 106, the recovery mechanism 3 comprises a first conveying pipe 301, and the top end of the first conveying pipe 301 is fixedly communicated with the right surface of the exchange shell 104.
The effect that its whole embodiment 2 reaches is, through setting up the effect that the inside flue gas of communication port 103 played the messenger passageway 101 gets into from one side of exchange shell 104, through setting up heat conduction fin 106 in heat conduction piece 105 bottom, plays the effect that improves heat exchange efficiency, plays the effect that draws the inside high temperature flue gas of exchange shell 104 to second conveyer pipe 302 through first conveyer pipe 301.
Example 3
As shown in fig. 1-4, the bottom end of the first conveying pipe 301 is fixedly communicated with a second conveying pipe 302, the right end of the second conveying pipe 302 is provided with an air pump 303, the left end face of the second conveying pipe 302 is fixedly communicated with a hollow heat conducting shell 304, and the position, close to the rear surface, of the right surface of the hollow heat conducting shell 304 is fixedly communicated with an exhaust pipe 305.
The effect that its whole embodiment 3 reached is, play through setting up air pump 303 and blow the inside effect of hollow heat conduction shell 304 with the inside high temperature flue gas that enters into second conveyer pipe 302, play the effect of absorbing heat in the high temperature flue gas through hollow heat conduction shell 304, and can give the boiler with heat transfer through the outer wall of the hollow heat conduction shell 304 parcel boiler, thereby heat up its inside air, reach combustion-supporting effect, perhaps set up under indoor bottom plate, play the effect of heating, the effectual waste heat that has utilized in the high temperature flue gas, the energy has been practiced thrift, play the flue gas exhaust effect after will utilizing through blast pipe 305.
The application method and the working principle of the device are as follows: the high temperature flue gas generated after boiler combustion flows upwards after entering the channel 101 through the air inlet pipe 102, enters the channel through the communication port 103 from the left side of the exchange shell 104, enters the second conveying pipe 302 from the first conveying pipe 301 at the right side, at this time, the heat conducting block 105 at the top of the exchange shell 104 absorbs part of the temperature in the high temperature flue gas and transmits the part of the temperature to the first thermoelectric module 201, the first thermoelectric module 201 and the second thermoelectric module 203 are made of materials with high thermoelectric efficiency, high conductivity and high temperature resistance, the materials are different, the materials can be selected in combination with practical conditions such as budget, and the like, for example, bismuth-antimony series, iron sulfide series, ferrite series, selenium series, and the like, the second thermoelectric module 203 which is electrically connected through the connecting wire 202 is in a normal temperature state after the first thermoelectric module 201 absorbs a large amount of heat, thus the difference thermoelectric potential is formed between the two, the Seebeck effect of thermoelectric materials is utilized, so that the differential thermoelectric force generates current, the effect of converting heat energy into electric energy is realized, meanwhile, the first power transmission line 204 and the second power transmission line 205 are connected with the electric storage device, so that the generated electric energy can be stored, the stored electric energy can be used for internal illumination power supply of a power plant and the like, thereby avoiding the waste of energy sources, improving the economic benefit of the power plant, and after the high-temperature flue gas absorbs a small amount of heat through the heat conducting block 105, the high-temperature flue gas entering the second conveying pipe 302 is blown into the hollow heat conducting shell 304 by starting the air pump 303, at the moment, the hollow heat conducting shell 304 absorbs the heat in the high-temperature flue gas, and the hollow heat conducting shell 304 can be designed to wrap the outer wall state of the boiler, so that the heat can be transferred to the boiler to heat the internal air of the boiler to achieve the combustion-supporting effect, or is arranged under an indoor bottom plate, plays a role in heating, effectively utilizes the waste heat in the high-temperature flue gas, saves energy, and finally discharges the utilized flue gas to processing equipment for processing through the exhaust pipe 305.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims (6)
1. A boiler flue gas waste heat utilization system, comprising: the device is characterized in that the conversion mechanism (2) is arranged at the top of the heat exchange mechanism (1), and the recovery mechanism (3) is arranged below the heat exchange mechanism (1);
the conversion mechanism (2) comprises a first thermoelectric module (201), a connecting wire (202) is electrically connected to the position, close to the left side, of the rear surface of the first thermoelectric module (201), a second thermoelectric module (203) is electrically connected to the rear end of the connecting wire (202), a first power transmission line (204) is electrically connected to the right surface of the second thermoelectric module (203), and a second power transmission line (205) is electrically connected to the right surface of the first thermoelectric module (201).
2. The boiler flue gas waste heat utilization system according to claim 1, wherein: the heat exchange mechanism (1) comprises a channel (101), an air inlet pipe (102) is fixedly communicated with the left surface of the channel (101), an exchange shell (104) is fixedly communicated with the top of the channel (101), a heat conducting block (105) is fixedly connected to the top of the exchange shell (104), and the top of the heat conducting block (105) is attached to a first thermoelectric module (201).
3. The boiler flue gas waste heat utilization system according to claim 2, wherein: the top of passageway (101) has seted up intercommunication mouth (103), the interior top equidistance of heat conduction piece (105) is provided with a plurality of heat conduction fins (106).
4. A boiler flue gas waste heat utilization system according to claim 3, wherein: the recovery mechanism (3) comprises a first conveying pipe (301), and the top end of the first conveying pipe (301) is fixedly communicated with the right surface of the exchange shell (104).
5. The boiler flue gas waste heat utilization system according to claim 4, wherein: the bottom of first conveyer pipe (301) is fixed to be linked together and is had second conveyer pipe (302), second conveyer pipe (302) right-hand member is provided with air pump (303).
6. The boiler flue gas waste heat utilization system according to claim 5, wherein: the left end face of the second conveying pipe (302) is fixedly communicated with a hollow heat conducting shell (304), and an exhaust pipe (305) is fixedly communicated with the right surface of the hollow heat conducting shell (304) close to the rear surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321582216.4U CN220304354U (en) | 2023-06-20 | 2023-06-20 | Boiler flue gas waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321582216.4U CN220304354U (en) | 2023-06-20 | 2023-06-20 | Boiler flue gas waste heat utilization system |
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| Publication Number | Publication Date |
|---|---|
| CN220304354U true CN220304354U (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321582216.4U Active CN220304354U (en) | 2023-06-20 | 2023-06-20 | Boiler flue gas waste heat utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117712895A (en) * | 2024-02-02 | 2024-03-15 | 国网湖北省电力有限公司 | Multi-energy conversion device for new energy of power distribution network |
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2023
- 2023-06-20 CN CN202321582216.4U patent/CN220304354U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117712895A (en) * | 2024-02-02 | 2024-03-15 | 国网湖北省电力有限公司 | Multi-energy conversion device for new energy of power distribution network |
| CN117712895B (en) * | 2024-02-02 | 2024-05-28 | 国网湖北省电力有限公司 | Multi-energy conversion device for new energy of power distribution network |
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