CN211424371U - Flue gas recirculation device for energy-saving boiler - Google Patents

Flue gas recirculation device for energy-saving boiler Download PDF

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Publication number
CN211424371U
CN211424371U CN202020054900.5U CN202020054900U CN211424371U CN 211424371 U CN211424371 U CN 211424371U CN 202020054900 U CN202020054900 U CN 202020054900U CN 211424371 U CN211424371 U CN 211424371U
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China
Prior art keywords
flue gas
boiler
energy
outlet
storehouse
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Active
Application number
CN202020054900.5U
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Chinese (zh)
Inventor
黄艾明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quzhou Datong Boiler Co ltd
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Quzhou Datong Boiler Co ltd
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Priority to CN202020054900.5U priority Critical patent/CN211424371U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model provides a flue gas recirculation device for energy-conserving boiler, this flue gas recirculation device include boiler and flue gas processing mechanism, the bottom of boiler has the burning chamber, and the top of boiler has the outlet flue, and the outlet flue passes through the pipeline and links to each other with flue gas processing mechanism, and flue gas processing mechanism is provided with the air nozzle including handling the storehouse on handling the storehouse lateral wall, and the top of handling the storehouse has the exhanst gas outlet, and the exhanst gas outlet communicates with each other with the burning chamber through circulating the tobacco pipe, and the air nozzle spouts the air to handling the storehouse in, gets into the burning chamber once more through circulating the tobacco pipe after mixing with the flue gas. The recycling device is used for processing hot flue gas generated by boiler combustion and then mixing the hot flue gas with air and then sending the hot flue gas into the combustion chamber again, so that loss of the flue gas heat is reduced to the maximum extent, and energy is effectively saved.

Description

Flue gas recirculation device for energy-saving boiler
Technical Field
The utility model relates to a flue gas recirculation device.
Background
In order to save energy, the boiler in the prior art adopts a mode of preheating combustion-supporting air and then feeding the preheated air into a boiler combustion chamber, and effective energy saving is realized by increasing the temperature of the combustion-supporting air, so that a complicated preheating device needs to be designed, and due to limited heat conversion efficiency, flue gas still with a large amount of heat is discharged into the air, so that on one hand, energy waste is caused, and in addition, the environment pollution is also caused. The utility model discloses a to the design of flue gas circulating device, realize that hot flue gas directly gets into combustion-supporting in the burning chamber, further saving the energy.
Disclosure of Invention
In order to solve the problem that exists among the background art, the utility model provides a flue gas recirculation device for energy-conserving boiler, this recirculation device send into the burning chamber again after handling with the air mixture with the hot flue gas that the boiler burning produced, and furthest has reduced and has lost among the flue gas heat, the effectual energy of having practiced thrift.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a flue gas recirculation device for energy-conserving boiler, this flue gas recirculation device includes boiler and flue gas processing mechanism, the bottom of boiler has the combustion chamber, and the top of boiler has the outlet flue, and the outlet flue passes through the pipeline and links to each other with flue gas processing mechanism, and flue gas processing mechanism is provided with the air nozzle including handling the storehouse on handling the storehouse lateral wall, and the top of handling the storehouse has the exhanst gas outlet, and the exhanst gas outlet communicates with each other with the combustion chamber through circulating the tobacco pipe, and the air nozzle spouts the air to handling the storehouse in, gets into the combustion chamber once more through circulating the tobacco pipe after mixing with the flue gas.
The lower part of the treatment bin is provided with a conical opening, and the bottom of the conical opening is provided with a dust collecting barrel.
The middle part of the side wall of the treatment bin is provided with an air inlet pipe, one end of the air inlet pipe is connected with a flue gas outlet through a pipeline, and the other end of the air inlet pipe extends into the treatment bin and is provided with a downward-bent opening.
And the lower bent opening is connected with a horn-shaped fan cover.
An inclined baffle is arranged inside the smoke outlet, an opening is reserved between the top end of the inclined baffle and one side wall of the smoke outlet, a circulating smoke pipe is arranged on the side wall of the smoke outlet adjacent to the opening, and the circulating smoke pipe is communicated with a combustion cavity of the boiler.
The air spray pipes are arranged on the side walls of two sides of the treatment bin, and the air spray pipes on the two sides are horizontally arranged and have opposite openings.
The utility model has the advantages that: the recycling device is used for processing hot flue gas generated by boiler combustion and then mixing the hot flue gas with air and then sending the hot flue gas into the combustion chamber again, so that loss of the flue gas heat is reduced to the maximum extent, and energy is effectively saved.
Drawings
The present invention will be further explained with reference to the accompanying drawings
Fig. 1 is a schematic structural view of a flue gas circulating device of the present invention;
Detailed Description
The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:
example 1
A smoke recirculation device for an energy-saving boiler is disclosed, as shown in figure 1, the smoke recirculation device comprises a boiler 10 and a smoke processing mechanism 20, a combustion chamber 11 is arranged at the bottom of the boiler 10, a smoke outlet 12 is arranged at the top of the boiler 10, and smoke generated after fuel is combusted in the combustion chamber 11 is discharged from the smoke outlet 12 after heat exchange. The smoke outlet 12 is connected to the smoke treatment means 20 by a duct.
The flue gas treatment mechanism 20 comprises a treatment bin 21, the lower part of the treatment bin 21 is provided with a conical opening 22, and the bottom of the conical opening 22 is provided with an ash collecting cylinder 23.
An air inlet pipe 24 is arranged in the middle of the side wall of the treatment bin 21, one end of the air inlet pipe 24 is positioned outside the side wall of the treatment bin 21, and the end is connected with the smoke outlet 12 through a pipeline. The other end of the air inlet pipe 24 extends into the interior of the treatment bin 21, a downward-bent opening 241 is formed in the end, extending into the interior of the treatment bin 21, of the air inlet pipe 24, a horn-shaped fan cover 242 is connected to the downward-bent opening 241, and the fan cover 242 faces the conical opening 22 of the treatment bin 21.
The top of the treatment bin 21 is provided with a flue gas outlet 25, an inclined baffle 251 is arranged inside the flue gas outlet 25, an opening is reserved between the top end of the inclined baffle 251 and one of the side walls of the flue gas outlet 25, a circulating smoke pipe 26 is arranged on the side wall of the flue gas outlet 25 adjacent to the opening, and the circulating smoke pipe 26 is communicated with the combustion chamber 11 of the boiler 10.
Air nozzles 27 are provided on both side walls of the interior of the treatment chamber 21 above the air inlet pipe 24, and the air nozzles 27 on both sides are horizontally disposed and open oppositely.
After the boiler is operated, the hot flue gas rises along the air inlet pipe 24 and enters the treatment bin through the air inlet pipe 24, because the fan cover 242 at the port of the air inlet pipe 24 faces downwards, the hot flue gas is sprayed downwards and quickly rises after being sprayed out, in the turning process, dust in the hot flue gas falls and enters the ash collecting barrel 23 through the tapered opening 22, the hot flue gas after dust removal continues to rise, the middle part of the treatment bin is mixed with the gas sprayed by the air spray pipe 27, the air sprayed by the air spray pipe 27 is used for supplementing oxygen into the flue gas, after the hot flue gas mixed with the air rises to the flue gas outlet 25, due to the blockage of the inclined baffle 251, the hot flue gas can obliquely rise along the inclined baffle 251, wind pressure to the side wall is formed at the opening part of the flue gas inlet 25, under the action of the wind pressure, the hot flue gas mixed with the air can enter the combustion bin again from the circulating smoke pipe 26, and because the flue gas temperature of the mixed, after entering the combustion chamber, the fuel can quickly support combustion, thereby reducing heat loss and saving energy.
Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above described embodiments without departing from the scope of the invention, and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the inventive concept.

Claims (6)

1. The utility model provides a flue gas recirculation device for energy-conserving boiler, this flue gas recirculation device includes boiler and flue gas processing mechanism, a serial communication port, the bottom of boiler has the burning chamber, and the top of boiler has the outlet flue, and the outlet flue passes through the pipeline and links to each other with flue gas processing mechanism, and flue gas processing mechanism is provided with the air nozzle including handling the storehouse on handling the storehouse lateral wall, and the top of handling the storehouse has the exhanst gas outlet, and the exhanst gas outlet communicates with each other with the burning chamber through circulating the tobacco pipe, and the air nozzle spouts the air to handling the storehouse in, through circulating the tobacco pipe reentrant burning chamber after mixing with the flue gas.
2. The flue gas recirculation apparatus for an energy-saving boiler according to claim 1, wherein the lower portion of the treatment bin has a tapered opening, and the bottom of the tapered opening is provided with an ash collecting barrel.
3. The flue gas recirculation apparatus for an energy-saving boiler according to claim 1, wherein an inlet pipe is provided at a middle portion of the sidewall of the treatment chamber, one end of the inlet pipe is connected to the flue gas outlet through a pipe, and the other end of the inlet pipe extends into the interior of the treatment chamber and has a downwardly bent opening.
4. The flue gas recirculation apparatus for an energy-saving boiler according to claim 3, wherein a bell-shaped hood is connected to the down-turned opening.
5. The flue gas recirculation device for an energy-saving boiler as claimed in claim 1, wherein the flue gas outlet is internally provided with an inclined baffle, an opening is reserved between the top end of the inclined baffle and one of the side walls of the flue gas outlet, and a circulating smoke pipe is arranged on the side wall of the flue gas outlet adjacent to the opening and is communicated with the combustion chamber of the boiler.
6. The flue gas recirculation apparatus for an energy-saving boiler according to claim 1, wherein the air nozzles are disposed on both side walls of the treatment chamber, the air nozzles on both sides are horizontally disposed and have opposite openings.
CN202020054900.5U 2020-01-13 2020-01-13 Flue gas recirculation device for energy-saving boiler Active CN211424371U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020054900.5U CN211424371U (en) 2020-01-13 2020-01-13 Flue gas recirculation device for energy-saving boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020054900.5U CN211424371U (en) 2020-01-13 2020-01-13 Flue gas recirculation device for energy-saving boiler

Publications (1)

Publication Number Publication Date
CN211424371U true CN211424371U (en) 2020-09-04

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Application Number Title Priority Date Filing Date
CN202020054900.5U Active CN211424371U (en) 2020-01-13 2020-01-13 Flue gas recirculation device for energy-saving boiler

Country Status (1)

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CN (1) CN211424371U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112251257A (en) * 2020-10-12 2021-01-22 安徽佳禾炭业科技有限公司 Energy coupling device for producing active carbon by gas carbon generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112251257A (en) * 2020-10-12 2021-01-22 安徽佳禾炭业科技有限公司 Energy coupling device for producing active carbon by gas carbon generator

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