CN106369804B - High-effect heat regenerative system - Google Patents
High-effect heat regenerative system Download PDFInfo
- Publication number
- CN106369804B CN106369804B CN201610773367.6A CN201610773367A CN106369804B CN 106369804 B CN106369804 B CN 106369804B CN 201610773367 A CN201610773367 A CN 201610773367A CN 106369804 B CN106369804 B CN 106369804B
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- steam
- steam turbine
- heater
- steam inlet
- pressure heater
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
- F01K17/025—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic in combination with at least one gas turbine, e.g. a combustion gas turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Turbines (AREA)
Abstract
This patent application discloses a kind of high-effect heat regenerative systems, heater including steam turbine and multiple series connection and/or parallel connection, the heater of multiple series connection and/or parallel connection is equipped with the first steam inlet, the exhaust outlet of the steam turbine is connected to by jet chimney with first steam inlet, it is additionally provided with high-pressure heater and backheat pipeline, extraction opening is offered on steam turbine, which is connected to by backheat pipeline with the steam inlet of high-pressure heater, and backheat pipeline is equipped with switching valve；The second steam inlet converged with the first steam inlet, the second steam inlet of steam (vapor) outlet connection of high-pressure heater are additionally provided on the heater of multiple series connection and/or parallel connection.On the one hand the heat regenerative system can improve feed temperature, on the other hand can reduce thermal loss of steam turbine and net coal consumption rate.
Description
Technical field
The invention belongs to be used for heating, a kind of such as industry, civilian field, and in particular to high-effect heat regenerative system.
Background technique
The process of denitrification is gone in combustion product gases, antipollution importance has been used as worldwide ask
It inscribes and is shrilly contemplated.The technique for comparing mainstream in the world is divided into: SCR and SNCR.The denitration of above two technique is former
It by conversion of nitrogen oxides is nitrogen and other free of contamination compounds that reason, which is by urea or ammonium hydroxide,.
Urea or ammonium hydroxide be usually pass through hot water to be flashed to ammonia, then with reaction of nitrogen oxides, side common at present
Method is that the steam generated by boiler or steam turbine heats water supply, steaming of the hot water after being then heated for urea or ammonium hydroxide
Hair is found in use, also there is a problem that 1, feed temperature is lower, influences denitration efficiency；2, it is generated using steam turbine
Steam when, thermal loss of steam turbine is too high, and net coal consumption rate is high.
Summary of the invention
The purpose of the present invention is to provide a kind of high-effect heat regenerative system, on the one hand which can improve to water temperature
Degree, on the other hand can reduce thermal loss of steam turbine and net coal consumption rate.
In order to achieve the above objectives, base case of the invention is as follows:
High-effect heat regenerative system, including steam turbine and it is multiple series connection and/or parallel connection heater, it is multiple series connection and/or simultaneously
The heater of connection is equipped with the first steam inlet, and the exhaust outlet of the steam turbine is connected by jet chimney and first steam inlet
It is logical, it is additionally provided with high-pressure heater and backheat pipeline, offers extraction opening on steam turbine, which passes through backheat pipeline and high pressure
The steam inlet of heater is connected to, and backheat pipeline is equipped with switching valve；It is additionally provided on the heater of multiple series connection and/or parallel connection
The second steam inlet converged with the first steam inlet, the second steam inlet of steam (vapor) outlet connection of high-pressure heater.
The principle of this programme: in the present solution, the steam that the exhaust outlet of steam turbine is discharged enters first by jet chimney and steams
In vapour entrance, is in addition increased newly on steam turbine and offer extraction opening, the steam in the extraction opening enters after entering high-pressure heater
Second steam inlet, and converge with the first steam inlet, the steam after converging is the heating water supply heat exchange in heater, is heated
Hot water afterwards enters in denitrating system.
The advantages of this programme, is: in the present solution, dexterously increasing high-pressure heater, and steam extraction is opened up on steam turbine
Mouthful, extraction opening enters high-pressure heater through backheat pipeline, finds after being arranged by above structure, through multiple series connection and/or parallel connection
Heater treated feed temperature improve about 20 DEG C, and thermal loss of steam turbine reduces about 30kJ/kWh, converts into net coal consumption rate
Reduce about 1.2g/kWh.
Prioritization scheme 1, advanced optimizes base case, and the extraction opening is located at the end of steam turbine acting.Invention
People has found in use, when extraction opening is arranged in the manner described above, can improve final feed temperature, to improve denitration effect
Rate.
Prioritization scheme 2 advanced optimizes base case, 1 any one of prioritization scheme, and the high pressure cylinder of the steam turbine is
Reverse-flow type, and high pressure cylinder two sides are equipped at least 6 grades actings.The steam turbine of above-mentioned configuration not only can guarantee that extraction opening is enough
Installation space, and the vapor (steam) temperature being discharged through extraction opening is relatively high, can be further improved in high-pressure heater to water temperature
Degree.
Prioritization scheme 3, to advanced optimizing for prioritization scheme 2, the steam extraction amount of the high-pressure heater is at least 80t/h.
The steam extraction amount of high-pressure heater is controlled in above range, can guarantee that high-pressure heater controls the temperature of water supply, and can mention
The heating efficiency of other high heaters.
Prioritization scheme 4, advanced optimizes base case, when the power of the steam turbine is greater than 500MW, hyperbaric heating
Device cutting.After extraction opening is arranged on steam turbine, steam extraction process can will form thrust to each grade blade in steam turbine high-pressure cylinder,
Discovery in use, when the power of steam turbine is greater than 500MW, each grade blade can be born compared with high thrust, so by hyperbaric heating
Device cutting guarantees that steam turbine operates normally.
Prioritization scheme 5, to advanced optimizing for prioritization scheme 4, the high-pressure heater investment and chopping speed are less than
0.5t/min.During the investment and excision of heater, the thrust variation of steam-turbine unit is bigger, high-pressure heater investment and
When chopping speed is controlled within the above range, handoff procedure is relatively slow, can be avoided the axial float of rotor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high-effect heat regenerative system embodiment of the present invention；
Fig. 2 is the structural schematic diagram of steam turbine part in the high-effect heat regenerative system embodiment of the present invention.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description include: steam turbine 1, high-pressure heater 2, heater 3, the first steam inlet 4,
Jet chimney 5, backheat pipeline 6, switching valve 7, the second steam inlet 8, extraction opening 9.
Embodiment 1
The present embodiment is substantially as shown in Figure 1 and Figure 2: the present embodiment provides a kind of high-effect heat regenerative systems, including steamer
Machine 1 and three concatenated heaters 3 have the first steam inlet 4, steamer on first heater 3 of three concatenated heaters 3
The exhaust outlet of machine 1 is connected to by jet chimney 5 with the first steam inlet 4, and the present embodiment also has additional high-pressure heater 2 and backheat
Pipeline 6 offers extraction opening 9 on steam turbine 1, which is connected by the steam inlet of backheat pipeline 6 and high-pressure heater 2
It is logical, and switching valve 7 is installed on backheat pipeline 6, extraction opening 9 is located at the end of the acting of steam turbine 1.Inventor sends out in use
It is existing, when extraction opening 9 is arranged in the manner described above, final feed temperature can be improved, to improve denitration efficiency；Three concatenated
The second steam inlet 8 converged with the first steam inlet 4, high-pressure heater are also provided on first heater 3 of heater 3
2 the second steam inlet of steam (vapor) outlet 8 is connected to.
In the present embodiment, the steam extraction amount of high-pressure heater 2 is 80t/h.The steam extraction amount of high-pressure heater 2 is controlled in above-mentioned model
When enclosing, it can guarantee that high-pressure heater 2 controls the temperature of water supply, and the heating efficiency of other heaters 3 can be improved.
In the present embodiment, when the power of steam turbine 1 is greater than 500MW, high-pressure heater 2 is cut off.It is arranged on steam turbine 1
After extraction opening 9, steam extraction process can will form thrust to each grade blade in 1 high pressure cylinder of steam turbine, find in use, steam turbine
When 1 power is greater than 500MW, each grade blade can be born compared with high thrust, so high-pressure heater 2 is cut off, guarantee steam turbine 1
It operates normally.
When high-pressure heater 2 is put into and is cut off, the rate of switching is less than 0.5t/min.Because the investment of heater 3 and
During excision, the thrust variation of 1 unit of steam turbine is bigger, and the investment of high-pressure heater 2 and chopping speed control are in above-mentioned model
When enclosing interior, handoff procedure is relatively slow, can be avoided the axial float of rotor.
Embodiment 2
Be in place of the difference of the present embodiment and embodiment 1: the high pressure cylinder of steam turbine 1 is reverse-flow type, and high pressure cylinder two sides
It is equipped at least 6 grades actings.The steam turbine 1 of above-mentioned configuration not only can guarantee the enough installation spaces of extraction opening 9, but also through taking out
The vapor (steam) temperature that steam ports 9 is discharged is relatively high, can be further improved feed temperature in high-pressure heater 2.
Specific workflow:
It is illustrated by taking embodiment 2 as an example below, in the scheme of embodiment 2, the steam of the exhaust outlet discharge of steam turbine 1 is logical
It crosses jet chimney 5 to enter in the first steam inlet 4, is in addition increased newly on steam turbine 1 and offer extraction opening 9, steam is through steam turbine 1
After the acting of 6 grades of head side, turn round 180 ° enter after 6 grades continue to do work, finally flowed out from extraction opening 9, the steam in the extraction opening 9
Enter the second steam inlet 8 after into high-pressure heater 2, and converge with the first steam inlet 4, the steam after converging is heater
Heating water supply heat exchange in 3, the hot water after being heated enter in denitrating system.
The present embodiment dexterously increases high-pressure heater 2, and extraction opening 9 is opened up on steam turbine 1, and extraction opening 9 passes through
Backheat pipeline 6 enters high-pressure heater 2, finds after being arranged by above structure, adds through high-pressure heater 2 and three are concatenated
Hot device 3 treated feed temperature improves about 20 DEG C, and 1 heat consumption of steam turbine reduces about 30kJ/kWh, converts into net coal consumption rate drop
Low about 1.2g/kWh.
What has been described above is only an embodiment of the present invention, and the common sense such as well known characteristic do not describe excessively herein in scheme.
It should be pointed out that for those skilled in the art, without departing from the inventive concept of the premise, several changes can also be made
Shape and improvement, these also should be considered as protection scope of the present invention, these all will not influence the effect and patent that the present invention is implemented
Practicability.The scope of protection required by this application should be based on the content of the claims, the specific embodiment party in specification
The records such as formula can be used for explaining the content of claim.
Claims (5)
1. high-effect heat regenerative system, the heater including steam turbine and multiple series connection and/or parallel connection, multiple series connection and/or parallel connection
Heater be equipped with the first steam inlet, the exhaust outlet of the steam turbine is connected by jet chimney and first steam inlet
It is logical, which is characterized in that be additionally provided with high-pressure heater and backheat pipeline, offer extraction opening on steam turbine, which passes through back
Heat pipeline is connected to the steam inlet of high-pressure heater, and backheat pipeline is equipped with switching valve；It is multiple series connection and/or parallel connection plus
The second steam inlet converged with the first steam inlet, the second steam inlet of steam (vapor) outlet of high-pressure heater are additionally provided on hot device
Connection；When the power of the steam turbine is greater than 500MW, high-pressure heater cutting.
2. high-effect heat regenerative system according to claim 1, which is characterized in that the extraction opening is located at steam turbine acting
End.
3. high-effect heat regenerative system according to claim 1 or 2, which is characterized in that the high pressure cylinder of the steam turbine is back
Streaming, and high pressure cylinder two sides are equipped at least 6 grades actings.
4. high-effect heat regenerative system according to claim 3, which is characterized in that the steam extraction amount of the high-pressure heater is at least
For 80t/h.
5. high-effect heat regenerative system according to claim 1, which is characterized in that the high-pressure heater investment and cutting speed
Rate is 0.5t/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773367.6A CN106369804B (en) | 2016-08-31 | 2016-08-31 | High-effect heat regenerative system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773367.6A CN106369804B (en) | 2016-08-31 | 2016-08-31 | High-effect heat regenerative system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369804A CN106369804A (en) | 2017-02-01 |
| CN106369804B true CN106369804B (en) | 2019-05-24 |
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ID=57900864
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610773367.6A Active CN106369804B (en) | 2016-08-31 | 2016-08-31 | High-effect heat regenerative system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650022A (en) * | 2009-08-21 | 2010-02-17 | 上海电力学院 | Steam turbine interstage back-heating heater cross-class connecting system |
| CN201715492U (en) * | 2010-05-28 | 2011-01-19 | 济南市琦泉热电有限责任公司 | Set back-heating system adopting different pressure ratings of steam |
| CN201723259U (en) * | 2010-07-14 | 2011-01-26 | 中国电力工程顾问集团华东电力设计院 | Full-load high-efficiency heat regeneration system for power stations |
| CN203273855U (en) * | 2013-03-11 | 2013-11-06 | 中国电力工程顾问集团华东电力设计院 | Externally-arranged steam cooler system in regenerative system of power plant and regenerative system |
| CN104534539A (en) * | 2015-01-08 | 2015-04-22 | 清华大学 | Gas steam combined cycle central heating device and heating method |
| CN206145658U (en) * | 2016-08-31 | 2017-05-03 | 中节能科技投资有限公司 | High -efficient heat recovery system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191956A (en) * | 2010-03-04 | 2011-09-21 | 天华化工机械及自动化研究设计院 | Method for reducing coal consumption of coal fired power plant by arranging steam pipe type drying system |
-
2016
- 2016-08-31 CN CN201610773367.6A patent/CN106369804B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650022A (en) * | 2009-08-21 | 2010-02-17 | 上海电力学院 | Steam turbine interstage back-heating heater cross-class connecting system |
| CN201715492U (en) * | 2010-05-28 | 2011-01-19 | 济南市琦泉热电有限责任公司 | Set back-heating system adopting different pressure ratings of steam |
| CN201723259U (en) * | 2010-07-14 | 2011-01-26 | 中国电力工程顾问集团华东电力设计院 | Full-load high-efficiency heat regeneration system for power stations |
| CN203273855U (en) * | 2013-03-11 | 2013-11-06 | 中国电力工程顾问集团华东电力设计院 | Externally-arranged steam cooler system in regenerative system of power plant and regenerative system |
| CN104534539A (en) * | 2015-01-08 | 2015-04-22 | 清华大学 | Gas steam combined cycle central heating device and heating method |
| CN206145658U (en) * | 2016-08-31 | 2017-05-03 | 中节能科技投资有限公司 | High -efficient heat recovery system |
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| Publication number | Publication date |
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| CN106369804A (en) | 2017-02-01 |
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Effective date of registration: 20230829 Address after: Room 201-6, 2nd Floor, No. 8 Hongfu Road, Daxing District, Beijing 102600 Patentee after: CECEP Energy Saving Technology Co.,Ltd. Address before: Floor 9, building a, energy saving building, No. 42, Xizhimen North Street, Haidian District, Beijing 100082 Patentee before: CECEP TECHNOLOGY INVESTMENT Co.,Ltd. |