CN209213828U - A kind of boiler with flue gas waste heat recovery apparatus - Google Patents
A kind of boiler with flue gas waste heat recovery apparatus Download PDFInfo
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- CN209213828U CN209213828U CN201821896653.2U CN201821896653U CN209213828U CN 209213828 U CN209213828 U CN 209213828U CN 201821896653 U CN201821896653 U CN 201821896653U CN 209213828 U CN209213828 U CN 209213828U
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- shell
- heat exchanger
- exchanger tube
- pipe
- boiler
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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 relates to the technical fields of circulating fluidized bed boiler, disclose a kind of boiler with flue gas waste heat recovery apparatus, including furnace body, smoke exhaust pipe, the air inlet pipe being connect with furnace body, the smoke exhaust pipe includes horizontally extending smoke guide pipe, L-shaped pipe, the shell being arranged between smoke guide pipe and pipe, the shell side is arranged in opening, and the lid for closing shell is provided on the shell；It is provided with the heat exchanger tube extended in shell on the lid, multiple snorkels across heat exchanger tube are provided on the heat exchanger tube；The both ends of the heat exchanger tube are pierced by lid, and described heat exchanger tube one end, which is connected with, is connected with escape pipe into tracheae, the heat exchanger tube other end, and the escape pipe is connect with air inlet pipe.Compared to the recuperation of heat of common metal tube, slow down the gas flow rates in shell and in heat exchanger tube due to joined multiple snorkels, and increase the contact area of gas, to improve heat exchange efficiency.
Description
Technical field
The utility model relates to the technical fields of circulating fluidized bed boiler, and in particular to one kind has flue gas waste heat recovery dress
The boiler set.
Background technique
Circulating fluidized bed boiler is the highest clean coal combustion technology of industrialization degree.Circulating fluidized bed boiler uses fluidised form
Change burning, primary structure includes combustion chamber (including emulsion zone and dilute-phase zone) and circulation melt down (including high-temperature gas-solid separator with
Revert system) two large divisions.Maximum difference with bubbling fluidized bed combustion technology is operating air velocity height, enhances burning and desulfurization
Etc. heterogeneous reactions process, boiler capacity can be expanded to power industry acceptable large capacity (600MW or ratings above)
Currently, circulating fluidized bed boiler underlying issues and expansion, abrasion, the overtemperature such as very good solution calorifics, mechanics, materialogy
Equal engineering problems become fire retardant solid fuel (such as gangue, oil shale, municipal refuse, mud and other wastes) energy benefit
Advanced technology.
The waste-heat recovery device of existing boiler, which generallys use, is passed into heat exchanging pipe in the smoke exhaust pipe of boiler, makes heat
The gas in pipeline is exchanged to absorb the heat in smoke exhaust pipe, to achieve the effect that heat recovery.But such waste heat returns
The heat recovery efficiency of receiving apparatus is poor.
Utility model content
For the problem of the heat recovery efficiency difference of above-mentioned existing waste-heat recovery device of the existing technology, this is practical
Novel is designed to provide a kind of boiler with flue gas waste heat recovery apparatus, improves heat recovery efficiency.
To achieve the above object, the utility model provides following technical solution:
A kind of boiler with flue gas waste heat recovery apparatus, including furnace body, smoke exhaust pipe, the air inlet pipe being connect with furnace body, institute
Stating smoke exhaust pipe includes horizontally extending smoke guide pipe, L-shaped pipe, the shell being arranged between smoke guide pipe and pipe
Body, the shell side are arranged in opening, and the lid for closing shell is provided on the shell；It is provided on the lid
The heat exchanger tube extended in shell is provided with multiple snorkels across heat exchanger tube on the heat exchanger tube；The two of the heat exchanger tube
End is pierced by lid, and described heat exchanger tube one end, which is connected with, is connected with escape pipe, the escape pipe into tracheae, the heat exchanger tube other end
It is connect with air inlet pipe.
By using above-mentioned technical proposal, the flue gas generated in furnace body enters in shell from smoke guide pipe, enters tracheae and is passed through
Air, air generates heat with the intracorporal flue gas of shell by heat exchanger tube and ventilation duct and exchanges, to achieve the effect that heat recovery.
Compared to the recuperation of heat of common metal tube, slow down the gas stream in shell and in heat exchanger tube due to joined multiple snorkels
Dynamic speed, and the contact area of gas is increased, to improve heat exchange efficiency.
The utility model is further arranged to: the connection of the upper end of the smoke guide pipe and shell.
By using above-mentioned technical proposal, the hot gas of smoke guide pipe enters the upper end of shell, and hot gas can rise, and heat is inhaled
The gas of receipts can decline, so that the flue gas more than heat be made to be gathered in the upper end of shell, the smoke contacts more than heat exchanger tube and heat are mentioned
The heat recovery efficiency of recyclable device is risen.
The utility model is further arranged to: the connection of the lower end of the pipe and shell.
By using above-mentioned technical proposal, the hot gas of smoke guide pipe enters the upper end of shell, and hot gas can rise, and heat is inhaled
The gas of receipts can decline, and after the heat of the intracorporal flue gas of shell is absorbed, flows out from the lower end of shell, improve the heat of recyclable device
Recovery efficiency.
The utility model is further arranged to: the both ends of the lid are bolted with shell.
By using above-mentioned technical proposal, lid is connect with shell by bolt, structure is simple, easy to connect.
The utility model is further arranged to: the lower section for being provided with shell of the shell.
By using above-mentioned technical proposal, since the intracorporal flue gas of shell can carry impurity, partial impurities are fallen on lid,
When removing lid, the impurity on lid is in above lid, facilitates the cleaning of impurity.
The utility model is further arranged to: being provided with gasket between the lid and shell.
By using above-mentioned technical proposal, by gasket, promote the leakproofness between lid and shell, reduce heat from
The probability flowed out between shell and lid.
The utility model is further arranged to: the mounting groove with gasket cooperation is offered on the shell, it is described close
Packing and mounting groove, which push against, to be cooperated.
By using above-mentioned technical proposal, gasket is embedded into mounting groove and pushes against with mounting groove and cooperates, gasket with
The connectivity of mounting groove is strong.
The utility model is further arranged to: the gasket is in T shape.
By using above-mentioned technical proposal, the connection area of gasket in T shape and lid is big, lid and shell holder
Interior is sealed.
The utility model has the advantage that
1, slow down the gas flow rates in shell and in heat exchanger tube due to joined multiple snorkels, and increase
The contact area of gas, to improve heat exchange efficiency；
2, the intracorporal flue gas rate of outflow of shell is slowed, and improves heat exchange efficiency；
3, being sealed between shell and lid.
Detailed description of the invention
Fig. 1 is the overall structure cross-sectional view of boiler；
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1.
Appended drawing reference: 1, furnace body；2, air blower；3, air inlet pipe；4, smoke guide pipe；5, pipe；6, shell；7, lid；8,
Heat exchanger tube；9, snorkel；10, enter tracheae；11, escape pipe；12, bolt；13, mounting groove；14, gasket.
Specific embodiment
The utility model is described further referring to attached drawing.
A kind of boiler with flue gas waste heat recovery apparatus is connect including furnace body 1, smoke exhaust pipe, with furnace body 1 as shown in Figure 1:
Air inlet pipe 3.Air blower 2 is provided in air inlet pipe 3.Air inlet pipe 3 is that furnace body 1 is passed through air.
Smoke exhaust pipe includes horizontally extending smoke guide pipe 4, L-shaped pipe 5, is arranged in smoke guide pipe 4 and smoke
Shell 6 between pipe 5.The lower section of shell 6 is arranged in opening, and the lid 7 for closing shell 6, shell 6 are provided on shell 6
Metal is taken to be made with lid 7 and in outer layer covers thermal insulation material.Smoke guide pipe 4 is connect with the upper end of shell 6.Pipe 5 with
The lower end of shell 6 connects.
It is provided with the heat exchanger tube 8 extended in shell 6 on lid 7, is provided on heat exchanger tube 8 multiple across heat exchanger tube 8
Snorkel 9, snorkel 9 are round tube, and snorkel 9 passes through the two sides of heat exchanger tube 8 and is not connected to heat exchanger tube 8.Heat exchanger tube 8 and logical
Tracheae 9 takes iron pipe.The both ends of heat exchanger tube 8 are pierced by lid 7, and 8 one end of heat exchanger tube is connected with another into tracheae 10, heat exchanger tube 8
End is connected with escape pipe 11, and escape pipe 11 is connect with air inlet pipe 3.Enter and is provided with air blower 2 on tracheae 10.Enter tracheae 10 and outlet
Pipe 11 takes insulating tube.
Gas enters in heat exchanger tube 8 from tracheae 10 is entered, and the air in heat exchanger tube 8 passes through the pipe of heat exchanger tube 8 and snorkel 9
Wall is contacted with the gas in shell 6, thus the waste heat in recovered flue gas.Compared to the recuperation of heat of common metal tube, due to adding
Enter multiple snorkels 9 to slow down the gas flow rates in shell 6 and in heat exchanger tube 8, and increases the contact surface of gas
Product, to improve heat exchange efficiency.
As shown in Figure 2: the both ends of lid 7 are connect with shell 6 by bolt 12, and bolt 12 passes through lid 7 and shell 6.Shell
Offer mounting groove 13 on body 6, mounting groove 13 is in rectangle, be provided with gasket 14 in mounting groove 13, gasket 14 it is in T shape and
It is partially embedded into mounting groove 13, gasket 14 and mounting groove 13 push against and cooperate.By gasket 14, lid 7 and shell are improved
Leakproofness between body 6.
Working principle: gasket 14 is connect with mounting groove 13, by covering lid 7 on shell 6, makes lid 7 and shell 6
Connection.By 8 both ends of heat exchanger tube respectively with enter tracheae 10 and escape pipe 11 is connect.Enter 10 air inlet of tracheae, gas enters heat exchanger tube 8
The interior gas in shell 6 forms heat and exchanges.Compared to the recuperation of heat of common metal tube, due to joined multiple snorkels
9 slow down the gas flow rates in shell 6 and in heat exchanger tube 8, and increase the contact area of gas, change to improve
The thermal efficiency.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of boiler with flue gas waste heat recovery apparatus, including furnace body (1), smoke exhaust pipe, the air inlet pipe being connect with furnace body (1)
(3), it is characterized in that: the smoke exhaust pipe include horizontally extending smoke guide pipe (4), L-shaped pipe (5), setting exist
Shell (6) between smoke guide pipe (4) and pipe (5), shell (6) side are arranged in opening, are arranged on the shell (6)
There is the lid (7) for closing shell (6)；The heat exchanger tube (8) extended in shell (6) is provided on the lid (7), it is described
Multiple snorkels (9) across heat exchanger tube (8) are provided on heat exchanger tube (8)；The both ends of the heat exchanger tube (8) are pierced by lid (7),
Described heat exchanger tube (8) one end is connected with to be connected with escape pipe (11) into tracheae (10), the heat exchanger tube (8) other end, it is described go out
Tracheae (11) is connect with air inlet pipe (3).
2. a kind of boiler with flue gas waste heat recovery apparatus according to claim 1, it is characterized in that: the smoke guide pipe
(4) it is connect with the upper end of shell (6).
3. a kind of boiler with flue gas waste heat recovery apparatus according to claim 1, it is characterized in that: the pipe
(5) it is connect with the lower end of shell (6).
4. a kind of boiler with flue gas waste heat recovery apparatus according to claim 1, it is characterized in that: the lid (7)
Both ends and shell (6) connect by bolt (12).
5. a kind of boiler with flue gas waste heat recovery apparatus according to claim 4, it is characterized in that: the shell (6)
Opening be provided with the lower sections of shell (6).
6. a kind of boiler with flue gas waste heat recovery apparatus according to claim 5, it is characterized in that: the lid (7)
Gasket (14) are provided between shell (6).
7. a kind of boiler with flue gas waste heat recovery apparatus according to claim 6, it is characterized in that: the shell (6)
On offer mounting groove (13) with gasket (14) cooperation, the gasket (14) and mounting groove (13), which push against, to be cooperated.
8. a kind of boiler with flue gas waste heat recovery apparatus according to claim 7, it is characterized in that: the gasket
(14) in T shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896653.2U CN209213828U (en) | 2018-11-17 | 2018-11-17 | A kind of boiler with flue gas waste heat recovery apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896653.2U CN209213828U (en) | 2018-11-17 | 2018-11-17 | A kind of boiler with flue gas waste heat recovery apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209213828U true CN209213828U (en) | 2019-08-06 |
Family
ID=67460045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821896653.2U Active CN209213828U (en) | 2018-11-17 | 2018-11-17 | A kind of boiler with flue gas waste heat recovery apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209213828U (en) |
-
2018
- 2018-11-17 CN CN201821896653.2U patent/CN209213828U/en active Active
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