CN214147824U - Flue gas waste heat utilization system - Google Patents
Flue gas waste heat utilization system Download PDFInfo
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- CN214147824U CN214147824U CN202022786182.3U CN202022786182U CN214147824U CN 214147824 U CN214147824 U CN 214147824U CN 202022786182 U CN202022786182 U CN 202022786182U CN 214147824 U CN214147824 U CN 214147824U
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- heat exchanger
- flue gas
- waste heat
- honeycomb duct
- economizer
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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 flue gas waste heat utilization system relates to flue gas waste heat utilization field, including exhaust-heat boiler economizer, water supply, a plurality of economizer recirculating pump, low pressure steam pocket and heat exchanger, exhaust-heat boiler economizer pass through pipeline an with the water supply is connected, exhaust-heat boiler economizer pass through pipeline b with the low pressure steam pocket is connected, economizer recirculating pump entrance point collects formation female pipe an, exit end through being in charge of collecting and forms female pipe b, female pipe an with pipeline b connects, female pipe b with be equipped with the honeycomb duct between the heat exchanger, the heat exchanger with be equipped with the back flow between the pipeline a. The system reduces the exhaust gas temperature of the waste heat boiler and recovers heat; the heat source is provided for other heat users, the consumption of auxiliary power is reduced, and the energy is saved.
Description
Technical Field
The utility model relates to a flue gas waste heat utilization field, concretely relates to flue gas waste heat utilization system.
Background
Because of the particularity of the thermal process of the gas-steam combined cycle unit, in order to reduce the exhaust gas temperature of the waste heat boiler, the turbine is not provided with a regenerative system, the condensed water of the condenser is directly sent to a condensed water heater of the waste heat boiler, and the exhaust gas temperature of the waste heat boiler of the current large-scale F-grade gas turbine unit is generally about 80-90 ℃. Therefore, different from the conventional coal-fired thermal power generating unit, the flue gas waste heat recovery of the waste heat boiler aims at further utilizing the part of low-temperature heat source. Through the analysis of the flue gas waste heat and the utilization of the flue gas waste heat of the combined cycle unit, the comprehensive utilization direction and the implementation scheme of the tail flue gas waste heat are provided.
Disclosure of Invention
In order to solve the problem, the utility model discloses a flue gas waste heat utilization system.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a flue gas waste heat utilization system, includes exhaust-heat boiler economizer, water supply, a plurality of economizer recirculating pump, low pressure steam pocket and heat exchanger, exhaust-heat boiler economizer pass through pipeline an with the water supply is connected, exhaust-heat boiler economizer pass through pipeline b with the low pressure steam pocket is connected, economizer recirculating pump entrance point collects through the branch and forms female pipe an, the exit end collects through the branch and forms female pipe b, female pipe an with pipeline b connects, female pipe b with be equipped with the honeycomb duct between the heat exchanger, the heat exchanger with be equipped with the back flow between the pipeline a. The low-pressure steam pocket has the function of removing oxygen, the system comprises three 50% or two 100% economizer recirculating pumps, and a water supply source realizes the supply of condensed water.
As an improvement of the present invention, the heat exchanger includes a heat exchanger a and a heat exchanger b.
As an improvement of the utility model, the honeycomb duct include with honeycomb duct a, honeycomb duct a that female pipe b is connected with honeycomb duct b and honeycomb duct a that are equipped with between the heat exchanger a and honeycomb duct c that is equipped with between the heat exchanger b.
As an improvement of the utility model, the back flow include with back flow a, back flow a that pipeline a is connected with back flow b and back flow a that are equipped with between the heat exchanger a and the back flow c that is equipped with between the heat exchanger b.
As an improvement of the utility model, honeycomb duct a inlet end department is equipped with the governing valve, honeycomb duct a is last and is close to governing valve inlet end department is equipped with ooff valve an, outlet end department is equipped with ooff valve b. The switch valve can be a manual or electric switch valve.
As an improvement of the utility model, the system still includes the bypass pipe, bypass pipe one end with ooff valve a import end department is connected, the other end with ooff valve b export end department is connected, be equipped with ooff valve c on the bypass pipe. The bypass line is used when the regulating valve is damaged.
As an improvement, be equipped with ooff valve d on the honeycomb duct b, be equipped with ooff valve e on the honeycomb duct c, the system still includes the filter screen, the filter screen includes on the honeycomb duct b and be located heat exchanger a with filter screen a between the ooff valve d reaches on the honeycomb duct c and be located heat exchanger b with filter screen b between the ooff valve e.
As an improvement of the utility model, be equipped with ooff valve f on the back flow a, be equipped with ooff valve g on the back flow b, be equipped with ooff valve h on the back flow c.
As an improvement of the present invention, the system further includes a water collector, a water separator and a plurality of absorption water chilling units.
As an improvement of the utility model, the water collector goes out water end, the water knockout drum end of intaking all through the pipeline with heat exchanger b connects, absorption water chilling unit intake end, water outlet all through the pipeline with heat exchanger a connects, the exhaust-heat boiler economizer is exhaust-heat boiler low pressure economizer, the economizer recirculating pump is low pressure economizer recirculating pump, absorption water chilling unit is lithium bromide absorption water chilling unit. Cold water in the lithium bromide absorption type water chilling unit is supplied into the heat exchanger a for heating, and the heated water is supplied into the lithium bromide absorption type water chilling unit again, so that a heat source is provided for the operation of the lithium bromide absorption type water chilling unit, and circulation is realized.
Compared with the prior art, the utility model has the advantages of as follows:
1. the system reduces the exhaust gas temperature of the waste heat boiler and recovers heat;
2. the system provides a heat source for other heat users, reduces the consumption of auxiliary power and saves energy.
Drawings
FIG. 1 is a schematic view of a flue gas waste heat utilization system of the present invention;
list of reference numerals: 1. a waste heat boiler economizer; 2. a water supply source; 3. an economizer recirculation pump; 4. a low pressure steam drum; 5. a pipeline a; 6. a pipe b; 7. a main pipe a; 8. a main pipe b; 9. a heat exchanger a; 10. a heat exchanger b; 11. a flow guide pipe a; 12. a flow guide pipe b; 13. a flow guide pipe c; 14. a return pipe a; 15. a return pipe b; 16. a return pipe c; 17. adjusting a valve; 18. an on-off valve a; 19. an on-off valve b; 20. a bypass pipe; 21. an on-off valve c; 22. an on-off valve d; 23. an on-off valve e; 24. a filter screen a; 25. a filter screen b; 26. an on-off valve f; 27. switching a valve g; 28. switching a valve h; 29. a water collector; 30. a water separator; 31. an absorption water chilling unit.
Detailed Description
Example 1: referring to fig. 1, it is right now that the utility model provides a pair of flue gas waste heat utilization system explains, including exhaust-heat boiler economizer 1, water supply 2, a plurality of economizer recirculating pump 3, low pressure steam pocket 4 and heat exchanger, exhaust-heat boiler economizer 1 through pipeline a5 with water supply 2 connects, exhaust-heat boiler economizer 1 through pipeline b6 with low pressure steam pocket 4 connects, economizer recirculating pump 3 entrance point collects through the branch pipe and forms female pipe a7, the exit end collects through the branch pipe and forms female pipe b8, female pipe a7 with pipeline b6 connects, female pipe b8 with be equipped with the honeycomb duct between the heat exchanger, the heat exchanger with be equipped with the back flow between the pipeline a 5.
Example 2: referring to fig. 1, the flue gas waste heat utilization system provided by the present invention is now described, and the heat exchanger includes a heat exchanger a9 and a heat exchanger b 10.
Example 3: referring to fig. 1, the flue gas waste heat utilization system according to the present invention is now described, the draft tube includes a draft tube a11 connected to the main tube b8, a draft tube a11, and a draft tube b12 and a draft tube c13 provided between the heat exchanger a9 and the draft tube a11 and the heat exchanger b 10.
Example 4: referring to fig. 1, the flue gas waste heat utilization system provided by the present invention is now described, the return pipe includes a return pipe a14 connected to the pipeline a5, a return pipe b15 arranged between the return pipe a14 and the heat exchanger a9, and a return pipe c16 arranged between the return pipe a14 and the heat exchanger b 10.
Example 5: referring to fig. 1, explaining the flue gas waste heat utilization system provided by the present invention, the inlet end of the flow guide pipe a11 is provided with the regulating valve 17, the inlet end of the flow guide pipe a11 is provided with the switch valve a18, and the outlet end is provided with the switch valve b 19.
Example 6: referring to fig. 1, the flue gas waste heat utilization system according to the present invention is now described, the system further includes a bypass pipe 20, one end of the bypass pipe 20 is connected to the inlet end of the switch valve a18, the other end of the bypass pipe is connected to the outlet end of the switch valve b19, and the bypass pipe 20 is provided with a switch valve c 21.
Example 7: referring to fig. 1, it is now described that the utility model provides a pair of flue gas waste heat utilization system, be equipped with ooff valve d22 on honeycomb duct b12, be equipped with ooff valve e23 on honeycomb duct c13, the system still includes the filter screen, the filter screen includes on honeycomb duct b12 and be located heat exchanger a9 with filter screen a24 between ooff valve d22 and on honeycomb duct c13 and be located heat exchanger b10 with filter screen b25 between ooff valve e 23.
Example 8: referring to fig. 1, explaining the flue gas waste heat utilization system provided by the present invention, a switch valve f26 is arranged on the return pipe a14, a switch valve g27 is arranged on the return pipe b15, and a switch valve h28 is arranged on the return pipe c 16.
Example 9: referring to fig. 1, the flue gas waste heat utilization system provided by the present invention is now described, the system further includes a water collector 29, a water separator 30 and a plurality of absorption water chilling units 31.
Example 10: referring to fig. 1, it is right at present that the utility model provides a pair of flue gas waste heat utilization system explains, water collector 29 goes out water end, water knockout drum 30 and intakes the end all through the pipeline with heat exchanger b10 connects, 31 intake the end, the water outlet end of absorption cold water machine group all through the pipeline with heat exchanger a9 connects, exhaust-heat boiler economizer 1 is exhaust-heat boiler low pressure economizer, economizer recirculating pump 3 is low pressure economizer recirculating pump, absorption cold water machine group 31 is lithium bromide cold water machine group.
The present invention can also combine at least one of the technical features of examples 2, 3, 4, 5, 6, 7, 8, 9, 10 with example 1 to form a new implementation.
The working principle is as follows:
summer working condition operation process: the heat exchanger a works, the heat exchanger b is closed, the water supply source realizes the supply of condensed water, the water body realizes primary heating circulation through the pipeline a, the waste heat boiler economizer, the economizer recirculating pump, the flow guide pipe a, the flow guide pipe b, the heat exchanger a, the return pipe b, the return pipe a and the pipeline a, the bypass pipe is arranged for standby when the regulating valve is damaged, and the filter screen a realizes the filtration of the water body. Cold water in the lithium bromide absorption type water chilling unit is supplied into the heat exchanger a to realize heating, the heated water body is supplied into the lithium bromide absorption type water chilling unit again to provide a heat source for the operation of the lithium bromide absorption type water chilling unit, circulation is realized, and the lithium bromide absorption type water chilling unit realizes refrigeration. The operating personnel can realize the regulation and control of the switch valve according to the running condition.
Working condition operation process in winter: the heat exchanger a is closed, the heat exchanger b is opened, the water collector supplies cold water to the heat exchanger b, water heated by the heat exchanger b is guided into the water separator, condensed water supply is achieved through the water supply source, the water is heated by the cold water guided into the water collector through the pipeline a, the waste heat boiler economizer, the economizer recirculating pump, the diversion pipe a, the diversion pipe c, the heat exchanger b, the backflow pipe c, the backflow pipe a and the pipeline a, the bypass pipe is arranged for standby when the adjusting valve is damaged, the filter screen b achieves water body filtering, and hot water in the water separator can be used for domestic water, air conditioner driving heat sources and the like. The operating personnel can realize the regulation and control of the switch valve according to the running condition.
The condensed water can be heated through the economizer of the waste heat boiler and cooled through the heat exchanger, so that circulation is realized.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a flue gas waste heat utilization system, its characterized in that, includes exhaust-heat boiler economizer (1), water supply (2), a plurality of economizer recirculating pump (3), low pressure steam pocket (4) and heat exchanger, exhaust-heat boiler economizer (1) through pipeline a (5) with water supply (2) are connected, exhaust-heat boiler economizer (1) through pipeline b (6) with low pressure steam pocket (4) are connected, economizer recirculating pump (3) entrance point collects through the branch and forms female pipe a (7), the exit end collects through the branch and forms female pipe b (8), female pipe a (7) with pipeline b (6) are connected, female pipe b (8) with be equipped with the honeycomb duct between the heat exchanger, the heat exchanger with be equipped with the back flow between pipeline a (5).
2. The flue gas waste heat utilization system of claim 1, characterized in that: the heat exchanger comprises a heat exchanger a (9) and a heat exchanger b (10).
3. The flue gas waste heat utilization system of claim 2, characterized in that: the honeycomb duct includes honeycomb duct a (11), honeycomb duct a (11) that with female pipe b (8) are connected with honeycomb duct b (12) that are equipped with between heat exchanger a (9) and honeycomb duct c (13) that are equipped with between honeycomb duct a (11) and heat exchanger b (10).
4. The flue gas waste heat utilization system of claim 2, characterized in that: the return pipe comprises a return pipe a (14) connected with the pipeline a (5), a return pipe b (15) arranged between the return pipe a (14) and the heat exchanger a (9), and a return pipe c (16) arranged between the return pipe a (14) and the heat exchanger b (10).
5. The flue gas waste heat utilization system of claim 3, characterized in that: honeycomb duct a (11) inlet end department is equipped with governing valve (17), honeycomb duct a (11) are gone up and are close to governing valve (17) inlet end department is equipped with ooff valve a (18), outlet end department is equipped with ooff valve b (19).
6. The flue gas waste heat utilization system of claim 5, characterized in that: the system also comprises a bypass pipe (20), one end of the bypass pipe (20) is connected with the inlet end of the switch valve a (18), the other end of the bypass pipe is connected with the outlet end of the switch valve b (19), and a switch valve c (21) is arranged on the bypass pipe (20).
7. The flue gas waste heat utilization system of claim 3, characterized in that: be equipped with ooff valve d (22) on honeycomb duct b (12), be equipped with ooff valve e (23) on honeycomb duct c (13), the system still includes the filter screen, the filter screen includes on honeycomb duct b (12) and be located heat exchanger a (9) with filter screen a (24) between ooff valve d (22) and on honeycomb duct c (13) and be located heat exchanger b (10) with filter screen b (25) between ooff valve e (23).
8. The flue gas waste heat utilization system according to claim 4, characterized in that: the backflow pipe a (14) is provided with a switch valve f (26), the backflow pipe b (15) is provided with a switch valve g (27), and the backflow pipe c (16) is provided with a switch valve h (28).
9. The flue gas waste heat utilization system of claim 2, characterized in that: the system also comprises a water collector (29), a water separator (30) and a plurality of absorption water chilling units (31).
10. The flue gas waste heat utilization system of claim 9, characterized in that: the water collector (29) water outlet end and the water distributor (30) water inlet end are connected with the heat exchanger b (10) through pipelines, the absorption water chilling unit (31) water inlet end and the water outlet end are connected with the heat exchanger a (9) through pipelines, the waste heat boiler economizer (1) is a waste heat boiler low-pressure economizer, the economizer recirculating pump (3) is a low-pressure economizer recirculating pump, and the absorption water chilling unit (31) is a lithium bromide absorption water chilling unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022786182.3U CN214147824U (en) | 2020-11-27 | 2020-11-27 | Flue gas waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022786182.3U CN214147824U (en) | 2020-11-27 | 2020-11-27 | Flue gas waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214147824U true CN214147824U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022786182.3U Active CN214147824U (en) | 2020-11-27 | 2020-11-27 | Flue gas waste heat utilization system |
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| CN (1) | CN214147824U (en) |
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2020
- 2020-11-27 CN CN202022786182.3U patent/CN214147824U/en active Active
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