CN217235642U - System for recovering and adjusting water supply temperature of heat supply network by utilizing tail flue gas of waste heat boiler - Google Patents
System for recovering and adjusting water supply temperature of heat supply network by utilizing tail flue gas of waste heat boiler Download PDFInfo
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- CN217235642U CN217235642U CN202220500692.6U CN202220500692U CN217235642U CN 217235642 U CN217235642 U CN 217235642U CN 202220500692 U CN202220500692 U CN 202220500692U CN 217235642 U CN217235642 U CN 217235642U
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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
Abstract
The utility model relates to a system for recovering and adjusting the water supply temperature of a heat supply network by utilizing the tail smoke of a waste heat boiler, belonging to the technical field of tail smoke recovery and utilization of waste heat boilers; the technical problem to be solved is as follows: the improvement of the system hardware structure for recovering and adjusting the water supply temperature of the heat supply network by using the tail flue gas of the waste heat boiler is provided; the technical scheme for solving the technical problems is as follows: the smoke gas heat exchanger comprises a smoke gas supply pipeline, an air filter, an induced draft fan, a gas distributor, a smoke gas-smoke gas heat exchanger, a smoke gas return pipeline, a smoke gas distribution pipeline and a chimney outlet baffle, wherein a gas supply electric valve and a gas supply manual valve are arranged on the smoke gas supply pipeline; the utility model discloses be applied to the flue gas and retrieve.
Description
Technical Field
The utility model relates to an utilize exhaust-heat boiler afterbody flue gas to retrieve system of adjusting heat supply network water supply temperature belongs to exhaust-heat boiler afterbody flue gas recycle technical field.
Background
The waste heat boiler flue gas of the gas turbine is discharged to the atmosphere through the waste heat boiler after the gas turbine performs work through gas combustion, and the waste heat boiler flue gas flow is gas turbine exhaust → waste heat boiler inlet flue → secondary reheater → high-pressure secondary superheater → primary reheater → high-pressure primary superheater → high-pressure evaporator → denitration module space → high-pressure tertiary economizer→ medium pressure superheater → medium pressure evaporator → low pressure superheater → high pressure secondary economizer → medium pressure economizer → high pressure primary economizer → low pressure evaporator → condensate water heater → outlet flue → chimney → discharge to atmosphere. The exhaust gas temperature of the waste heat boiler is about 90 ℃, and the exhaust gas flow is 2000KNm 3 The tail gas of the waste heat boiler of the gas turbine in the prior art is directly exhausted to the atmosphere, the flue gas utilization rate is extremely low, the tail gas needs to be recovered, the tail gas is not required to be desulfurized, NOX is treated, the tail gas is only required to be recovered for heating, the circulating water of the heat supply network is heated by a steam-water heater, a hydrophobic cooler and a water-water flue gas-flue gas heat exchanger, the water supply temperature of the heat supply network is adjusted by the load of the unit under the working condition of back pressure, and the energy adjusting capacity is poor. And the heat efficiency of the unit loss caused by the smoke discharge loss is about 9 percent.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the system hardware structure for adjusting the water supply temperature of the heat supply network by utilizing the tail flue gas recovery of the waste heat boiler is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a system for recovering and adjusting water supply temperature of a heat supply network by utilizing flue gas at the tail part of a waste heat boiler comprises a flue gas supply pipeline at the tail part of the waste heat boiler, wherein one end of the flue gas supply pipeline is connected with a pipeline in front of a chimney outlet baffle, the other end of the flue gas supply pipeline is connected with an inlet of an air filter, an outlet of the air filter is connected with an inlet of an induced draft fan through an induced draft fan inlet pipeline, an outlet of the induced draft fan is connected with an inlet of a gas distributor through an induced draft fan outlet pipeline, an outlet of the gas distributor is connected with flue gas inlets of a plurality of flue gas-flue gas heat exchangers through flue gas distribution pipelines respectively, a flue gas outlet of the flue gas-flue gas heat exchangers is connected with one end of a flue gas return pipeline, and the other end of the flue gas return pipeline is connected to a pipeline behind the chimney outlet baffle;
a circulating water inlet of the flue gas-flue gas heat exchanger is connected with an outlet of a heat supply network circulating pump through a pipeline, and a circulating water outlet of the flue gas-flue gas heat exchanger is respectively connected with a water-water heat exchanger, a hydrophobic cooler and a steam-water heater through pipelines;
the flue gas heat exchanger is characterized in that a first electric valve and a first manual valve are arranged on the flue gas supply pipeline, a second electric valve is arranged on the draught fan inlet pipeline, a third electric valve and a check valve are arranged on the draught fan outlet pipeline, a fourth electric valve and an electric adjusting valve are arranged on the flue gas distribution pipeline, a fifth electric valve is arranged on the flue gas return pipeline, and a sixth electric valve and a seventh electric valve are arranged on the circulating water inlet pipeline and the water outlet pipeline of the flue gas-flue gas heat exchanger respectively.
Still be provided with reserve draught fan pipeline between air cleaner and the gas distributor, be provided with reserve draught fan on the reserve draught fan pipeline, be provided with first reserve electric valve on the pipeline that reserve draught fan links to each other with air cleaner, be provided with reserve electric valve of second and reserve check valve on the pipeline that reserve draught fan links to each other with the gas distributor.
The three flue gas-flue gas heat exchangers are respectively connected with the gas distributor through three flue gas distribution pipelines, pipelines of circulating water inlets of the three flue gas-flue gas heat exchangers are connected with outlets of heat supply network circulating pumps, and pipelines of circulating water outlets of the three flue gas-flue gas heat exchangers respectively flow circulating water into the steam-water heater, the hydrophobic cooler and the water-water heat exchanger through a main pipeline.
The chimney outlet baffle is specifically set as an electric baffle.
The utility model discloses beneficial effect for prior art possesses does: the utility model provides a heat supply network system for increasing gas turbine exhaust-heat boiler tail gas heat transfer power utilizes boiler tail gas to give the heating network system heating through reforming transform the back, lead gas turbine exhaust-heat boiler tail gas to flue gas-gas heater through the draught fan, arrange to the atmosphere through the chimney after the heat transfer finishes, when cold or heat supply area increase in weather, can utilize boiler afterbody flue gas to increase the heat supply temperature of heat supply network effectively, under the unchangeable condition of heat supply network circulating water flow, the increase heat transfer volume that can show, improve heating efficiency, promote unit efficiency, can reduce the tail gas heat transfer under the not enough condition of heat supply network consumption, do not let the heat supply temperature transfinite.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the present invention;
in the figure: 1 is a flue gas supply pipeline, 2 is a chimney, 3 is an air filter, 4 is an induced draft fan inlet pipeline, 5 is an induced draft fan, 6 is an induced draft fan outlet pipeline, 7 is a gas distributor, 8 is a flue gas distribution pipeline, 9 is a flue gas-flue gas heat exchanger, 10 is a flue gas return pipeline, 11 is a heat net circulating pump, 12 is a water-water heat exchanger, 13 is a hydrophobic cooler, 14 is a steam-water heater, 15 is a first electric valve, 16 is a first manual valve, 17 is a chimney outlet baffle, 18 is a second electric valve, 19 is a third electric valve, 20 is a check valve, 21 is a fourth electric valve, 22 is an electric adjusting valve, 23 is a fifth electric valve, 24 is a sixth electric valve, 25 is a seventh electric valve, 26 is a spare induced draft fan pipeline, 27 is a spare induced draft fan, 28 is a first spare electric valve, 29 is a second spare electric valve, and 30 is a spare check valve.
Detailed Description
As shown in figure 1, the utility model relates to a system for recovering and adjusting the water supply temperature of a heat supply network by utilizing the flue gas at the tail part of a waste heat boiler, which comprises a flue gas supply pipeline 1 at the tail part of the waste heat boiler, one end of the flue gas supply pipeline 1 is connected with a pipeline in front of the chimney outlet baffle 17, the other end of the flue gas supply pipeline 1 is connected with the inlet of the air filter 3, the outlet of the air filter 3 is connected with the inlet of an induced draft fan 5 through an induced draft fan inlet pipeline 4, the outlet of the induced draft fan 5 is connected with the inlet of a gas distributor 7 through an induced draft fan outlet pipeline 6, the outlet of the gas distributor 7 is respectively connected with the flue gas inlets of a plurality of flue gas-flue gas heat exchangers 9 through flue gas distribution pipelines 8, the flue gas outlet of the flue gas-flue gas heat exchanger 9 is connected with one end of a flue gas return pipeline 10, the other end of the flue gas return pipeline 10 is connected to a pipeline behind a chimney outlet baffle 17;
a circulating water inlet of the flue gas-flue gas heat exchanger 9 is connected with an outlet of a heat supply network circulating pump 11 through a pipeline, and a circulating water outlet of the flue gas-flue gas heat exchanger 9 is respectively connected with a water-water heat exchanger 12, a hydrophobic cooler 13 and a steam-water heater 14 through pipelines;
be provided with first electric valve 15 and first manual valve 16 on the flue gas supply duct 1, be provided with second electric valve 18 on the draught fan inlet pipeline 4, be provided with third electric valve 19 and check valve 20 on the draught fan outlet pipeline 6, be provided with fourth electric valve 21 and electronic accent door 22 on the flue gas distribution pipeline 8, be provided with fifth electric valve 23 on the flue gas return air pipeline 10, be provided with sixth electric valve 24 and seventh electric valve 25 on flue gas-gas heat exchanger 9's the circulating water inlet channel and the outlet conduit respectively.
Still be provided with reserve draught fan pipeline 26 between air cleaner 3 and the gas distributor 7, be provided with reserve draught fan 27 on the reserve draught fan pipeline 26, be provided with first reserve electric valve 28 on the pipeline that reserve draught fan 27 links to each other with air cleaner 3, be provided with reserve electric valve 29 of second and reserve check valve 30 on the pipeline that reserve draught fan 27 links to each other with the gas distributor 7.
The three flue gas-flue gas heat exchangers 9 are specifically arranged and are respectively connected with the gas distributor 7 through three flue gas distribution pipelines 8, pipelines of circulating water inlets of the three flue gas-flue gas heat exchangers 9 are all connected with an outlet of a heat supply network circulating pump 11, and pipelines of circulating water outlets of the three flue gas-flue gas heat exchangers 9 flow circulating water into a steam-water heater 14, a hydrophobic cooler 13 and a water-water heat exchanger 12 through a main pipeline.
The chimney exit baffle 17 is specifically configured as an electric baffle.
The utility model provides a system for utilizing exhaust-heat boiler afterbody flue gas recovery to adjust heat supply network water supply temperature, including flue gas-flue gas heat exchanger 9, connect flue gas supply line 1, air cleaner 3, draught fan 5, gas distributor 7, flue gas-flue gas heat exchanger 9, flue gas distribution pipeline 8, flue gas return line 10 at the exhaust-heat boiler afterbody, flue gas supply line 1 interface sets up on chimney 2 before chimney exit baffle 17, sets up first manual valve 16 and first electric valve 15 on flue gas supply line 1, the flue gas passes through flue gas supply line 1 and links to each other with air cleaner 3, air cleaner 3 passes through draught fan inlet line 4 and links to each other with draught fan 5, draught fan inlet line 4 is provided with second electric valve 18, draught fan 5 is an operation, a reserve, the draught fan export links to each other with gas distributor 7 through draught fan outlet line 6, draught fan outlet pipeline 6 sets up third electric valve 19 and check valve 20, and gas distributor 7 passes through flue gas distribution pipeline 8 with flue gas-gas heater 9 and links to each other, and flue gas distribution pipeline 8 sets up fourth electric valve 21 and electronic valve 22, flue gas return pipe 10 one end is connect to flue gas-gas heater 9, and other end interface is the pipeline behind chimney exit baffle 17, be provided with the fifth electric valve 23 of export flue gas return on the flue gas return pipe 10, flue gas-gas heater 9's circulating water side inlet sets up sixth electric valve 24, flue gas-gas heater 9's circulating water side outlet sets up seventh electric valve 25. The return water of the heat supply network passes through a heat supply network circulating water pump 11 and then enters a flue gas-flue gas heat exchanger 9 for heating, and the heated water enters a water-water heat exchanger 12, a hydrophobic cooler 13 and a steam-water heater 14 for heating and water supply. The utility model discloses can utilize boiler tail gas to heat the heat supply network and supply water, when the heat supply network water supply needs the temperature high, can increase draught fan 5 frequency, strengthen the electronic accent 22 aperture of flue gas distribution, close little chimney exit baffle 17, increase the heat supply, when the heat supply network water supply needs the temperature low, can reduce draught fan 5 frequency, reduce the electronic accent 22 aperture of flue gas distribution, open big chimney exit baffle 17, reduce the heat supply, adjust heat supply network heat supply temperature in a flexible way, improve unit efficiency.
The utility model discloses an operation mode as follows:
1) opening a first electric valve 15 and a first electric valve 16 at the inlet of the flue gas supply pipeline 1, opening a second electric valve 18 at the inlet of the draught fan 5, opening a third electric valve 19 at the outlet of the draught fan 5, opening a fourth electric valve 21 on the flue gas distribution pipeline 8 and opening a fifth electric valve 23 on the flue gas return pipeline 10;
3) the induced draft fan 4 is started in a frequency conversion mode, the total flow of the flue gas is adjusted through the frequency conversion fan, and the flow of the flue gas entering each flue gas-flue gas heat exchanger 9 is adjusted through the flue gas distribution pipeline 8;
4) the opening of the chimney outlet baffle 17 is changed to adjust the pressure of the flue gas inlet;
4) opening a sixth electric valve 24 for supplying water to the circulating water of the flue gas-flue gas heat exchanger 9;
5) and opening a seventh electric valve 25 of the flue gas-flue gas heat exchanger 9 for circulating backwater.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (4)
1. The utility model provides an utilize exhaust-heat boiler afterbody flue gas to retrieve system of adjusting heat supply network water supply temperature, includes the flue gas air supply line of exhaust-heat boiler afterbody, its characterized in that: one end of the flue gas supply pipeline is connected with a pipeline in front of the chimney outlet baffle, the other end of the flue gas supply pipeline is connected with an inlet of an air filter, an outlet of the air filter is connected with an inlet of an induced draft fan through an induced draft fan inlet pipeline, an outlet of the induced draft fan is connected with an inlet of a gas distributor through an induced draft fan outlet pipeline, an outlet of the gas distributor is respectively connected with flue gas inlets of a plurality of flue gas-flue gas heat exchangers through flue gas distribution pipelines, a flue gas outlet of each flue gas-flue gas heat exchanger is connected with one end of a flue gas return pipeline, and the other end of the flue gas return pipeline is connected to a pipeline behind the chimney outlet baffle;
a circulating water inlet of the flue gas-flue gas heat exchanger is connected with an outlet of a heat supply network circulating pump through a pipeline, and a circulating water outlet of the flue gas-flue gas heat exchanger is respectively connected with a water-water heat exchanger, a hydrophobic cooler and a steam-water heater through pipelines;
the flue gas heat exchanger is characterized in that a first electric valve and a first manual valve are arranged on the flue gas supply pipeline, a second electric valve is arranged on the draught fan inlet pipeline, a third electric valve and a check valve are arranged on the draught fan outlet pipeline, a fourth electric valve and an electric adjusting valve are arranged on the flue gas distribution pipeline, a fifth electric valve is arranged on the flue gas return pipeline, and a sixth electric valve and a seventh electric valve are arranged on the circulating water inlet pipeline and the water outlet pipeline of the flue gas-flue gas heat exchanger respectively.
2. The system for regulating the water supply temperature of the heat supply network by utilizing the tail flue gas recovery of the waste heat boiler as claimed in claim 1, is characterized in that: still be provided with reserve draught fan pipeline between air cleaner and the gas distributor, be provided with reserve draught fan on the reserve draught fan pipeline, be provided with first reserve electric valve on the pipeline that reserve draught fan links to each other with air cleaner, be provided with reserve electric valve of second and reserve check valve on the pipeline that reserve draught fan links to each other with the gas distributor.
3. The system for regulating the water supply temperature of the heat supply network by utilizing the tail flue gas recovery of the waste heat boiler as claimed in claim 1, is characterized in that: the three flue gas-flue gas heat exchangers are respectively connected with the gas distributor through three flue gas distribution pipelines, pipelines of circulating water inlets of the three flue gas-flue gas heat exchangers are connected with outlets of heat supply network circulating pumps, and pipelines of circulating water outlets of the three flue gas-flue gas heat exchangers respectively flow circulating water into the steam-water heater, the hydrophobic cooler and the water-water heat exchanger through a main pipeline.
4. The system for regulating the water supply temperature of the heat supply network by utilizing the tail flue gas recovery of the waste heat boiler as claimed in claim 1, is characterized in that: the chimney outlet baffle is specifically set as an electric baffle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220500692.6U CN217235642U (en) | 2022-03-09 | 2022-03-09 | System for recovering and adjusting water supply temperature of heat supply network by utilizing tail flue gas of waste heat boiler |
| JP2022002118U JP3238818U (en) | 2022-03-09 | 2022-06-24 | A system that recovers and utilizes flue gas from the tail of a waste heat boiler to regulate the water supply temperature of a heating network. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220500692.6U CN217235642U (en) | 2022-03-09 | 2022-03-09 | System for recovering and adjusting water supply temperature of heat supply network by utilizing tail flue gas of waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217235642U true CN217235642U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220500692.6U Active CN217235642U (en) | 2022-03-09 | 2022-03-09 | System for recovering and adjusting water supply temperature of heat supply network by utilizing tail flue gas of waste heat boiler |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3238818U (en) |
| CN (1) | CN217235642U (en) |
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2022
- 2022-03-09 CN CN202220500692.6U patent/CN217235642U/en active Active
- 2022-06-24 JP JP2022002118U patent/JP3238818U/en active Active
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| Publication number | Publication date |
|---|---|
| JP3238818U (en) | 2022-08-23 |
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