CN203431826U - Steam turbine water supply heat regenerative system capable of recovering waste heat steam - Google Patents
Steam turbine water supply heat regenerative system capable of recovering waste heat steam Download PDFInfo
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- CN203431826U CN203431826U CN201320533129.XU CN201320533129U CN203431826U CN 203431826 U CN203431826 U CN 203431826U CN 201320533129 U CN201320533129 U CN 201320533129U CN 203431826 U CN203431826 U CN 203431826U
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model provides a steam turbine water supply heat regenerative system capable of recovering waste heat steam. The steam turbine water supply heat regenerative system comprises a steam turbine (1), a deaerator (2), a high-pressure water supply heating device (7) and a lower-pressure heater (5). The deaerator (2) is connected with the steam turbine (1). The high-pressure water supply heating device (7) is connected with the deaerator (2). The lower-pressure heater (5) is connected with the deaerator (2) and the steam turbine (1). The steam turbine water supply heat regenerative system can make use of the waste heat steam in a plant area to the maximum extent on the premise that boiler water supply temperature is guaranteed, reduces regeneration stream extraction capacity of the steam turbine, increases electric energy production, lowers initial cost and maintenance charges, increases economic benefit of a whole factory, and has many advantages and practical value.
Description
Technical field
The utility model relates to a kind of steam turbine water supply heat back system of recovery waste heat steam.
Background technology
In recent years, in order deeply to implement the industrial policy of recycling economy, reach the object of energy efficiency, domestic iron and steel enterprises continues to increase energy-saving and emission-reduction working dynamics, has applied a large amount of energy-conserving and emission-cutting technologies.Especially aspect thermal power, greatly improved industry energy conservation technical merit, economic benefit and social benefit are remarkable.The concrete measure of thermal power aspect has a lot, as: palletizing shaft furnace waste heat recovery, blast furnace BPRT air blast, blast furnace waste pressure generating, converter vaporization is cooling, heating furnace vaporization is cooling, sintering waste heat generating, lime cogeneration, screw machine generating, gas to generate electricity etc.The selection of therrmodynamic system is the core of iron and steel enterprise's cogeneration, the problem of distributed type residual-heat utilization maximum is that initial cost is large, maintenance cost is high, and the angle how to integrate from therrmodynamic system reclaims full factory waste heat the most efficiently, when realizing resource consolidation, improve a difficult point of generating efficiency ，Shi present steel factory cogeneration technology application.
Steam turbine water supply heat back system as one the most general, to improving the most effective means of unit He Quan factory's heat-economy, by the steam turbine of current all thermal power plants, adopted.Heat regenerative system is the basis of thermodynamic system of steam tur, is also the core of power plant thermal system, and it plays conclusive effect to the heat-economy of unit and power plant.The assurance of heat-economy when good heat regenerative system not only will embody nominal situation operation, also gives sufficient consideration to the reliable and secure operation of damage and investment saving.The 50MW HTHP Turbo-generator Set of take is example, and heat regenerative system is in the situation that height adds excision and can manage to guarantee main feed temperature, and steam turbine power generation ability can improve 7～8%, and economic benefit is very considerable.
Utility model content
In order to optimize the therrmodynamic system of the existing distributed type residual-heat generating of steel plant, further integrate residual heat resources, reduce initial cost and maintenance cost, improve the efficiency of cycling economy of full factory, guarantee the stability of system operation.The utility model provides a kind of steam turbine water supply heat back system of recovery waste heat steam, the steam turbine water supply heat back system of this recovery waste heat steam can guarantee under the prerequisite of boiler feed temperature, utilize to greatest extent plant area's afterheat steam, reduce steam turbine regenerative steam amount, increased generated energy, reduce initial cost and maintenance cost, improved Liao Quan factory economic benefit, there is plurality of advantages and practical value.
The utility model for solving the technical scheme of its technical problem employing is: a kind of steam turbine water supply heat back system of recovery waste heat steam, comprise steam turbine, oxygen-eliminating device, high-pressure feed water heater and low-pressure heater, oxygen-eliminating device is connected with steam turbine, high-pressure feed water heater is connected with oxygen-eliminating device, and low-pressure heater is connected with steam turbine with oxygen-eliminating device.
Oxygen-eliminating device is connected with high-pressure feed water heater by boiler feed pump.
One end of the tube side of high-pressure feed water heater is connected with boiler feed pump, and the other end of the tube side of high-pressure feed water heater is connected with boiler.
One end of the shell side of high-pressure feed water heater is connected with plant area afterheat steam.
The steam turbine water supply heat back system of described recovery waste heat steam also comprises condensate water heat riser, condensate water heat riser is connected with high-pressure feed water heater with low-pressure heater, and condensate water heat riser can utilize the condensed water heating in high-pressure feed water heater to enter the condensate water before low-pressure heater.
Condensate water heat riser is connected with gland steam heater.
Condensate water heat riser is connected with backwater booster pump.
Backwater booster pump is provided with bypass protector.
The beneficial effects of the utility model are: the steam turbine water supply heat back system of this recovery waste heat steam has reduced investment, and recovery waste heat efficiency is high, and system is simple, the advantage such as easy to maintenance and system run all right.It had both ensured the generating capacity that has improved system, had ensured again Boiler High Pressure feed temperature.The multistage high-pressure heater that it has been cancelled in conventional heat regenerative system, has reduced that steam turbine is high-quality to draw gas, and this part is drawn gas will be all for pushing turbine acting generating.Be provided with integrated high-pressure to hot-water heating system, utilize plant area's afterheat steam heating high-pressure feedwater to reach rated temperature, produced high-temperature condensation water simultaneously.Integrated high-pressure adopts Modular surface formula steam-water heat exchanging pattern to hot-water heating system, and can realize water level and automatically regulate, to adapt to the parameter fluctuation of plant area's afterheat steam.The high-temperature condensation water that integrated high-pressure produces to hot-water heating system relies on back pressure to enter condensate water heat riser, adds Hot gas turbine condensate water, realizes the cascade utilization of afterheat steam heat.Condensate water heat riser adopts Modular surface formula water water heat exchange pattern, is connected on condensing water conduit with original low-pressure heater, improves to greatest extent steam turbine condensing water temperature, reduces steam turbine low adding and draws gas, and has improved generated energy.Backwater booster pump is returned waste heat source by the cryogenic condensation water after the heat exchange of condensate water heat riser, the mass balance that keeps waste heat steam-water, backwater booster pump and integrated high-pressure are chain to the water level of hot-water heating system, realize the automatic adjusting of water level, the fluctuation of having avoided water level to bring because of afterheat steam changes in flow rate, thus the stability of system operation improved.
In sum, the steam turbine water supply heat back system of this recovery waste heat steam can guarantee under the prerequisite of boiler feed temperature, utilize to greatest extent plant area's afterheat steam, reduce steam turbine regenerative steam amount, increased generated energy, reduce initial cost and maintenance cost, improved Liao Quan factory economic benefit, there is plurality of advantages and practical value.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the steam turbine water supply heat back system of recovery waste heat steam described in the utility model is described in further detail.
Fig. 1 is the schematic diagram of the steam turbine water supply heat back system of recovery waste heat steam.
1. steam turbines wherein, 2. oxygen-eliminating device, 3. boiler feed pump, 4. boiler, 5. low-pressure heater, 6. gland steam heater, 7. high-pressure feed water heater, 8. condensate water heat riser, 9. backwater booster pump, 91. bypass protectors, 10. condenser, 11. condensate pumps.
The specific embodiment
Below in conjunction with accompanying drawing, the steam turbine water supply heat back system of recovery waste heat steam described in the utility model is described in further detail.A kind of steam turbine water supply heat back system of recovery waste heat steam, comprise steam turbine 1, oxygen-eliminating device 2, high-pressure feed water heater 7 and a plurality of low-pressure heater 5, oxygen-eliminating device 2 is connected with steam turbine 1, high-pressure feed water heater 7 is connected with oxygen-eliminating device 2, low-pressure heater 5 is connected with steam turbine 1 with oxygen-eliminating device 2, as shown in Figure 1.
In addition, oxygen-eliminating device 2 is connected with high-pressure feed water heater 7 by boiler feed pump 3.One end of the tube side of high-pressure feed water heater 7 is connected with boiler feed pump 3, and the other end of the tube side of high-pressure feed water heater 7 is connected with boiler 4.One end of the shell side of high-pressure feed water heater 7 is connected with plant area afterheat steam, and the other end of the shell side of high-pressure feed water heater 7 is connected with condensate water heat riser 8.High-pressure feed water heater 7 both can utilize plant area's afterheat steam also can utilize the feedwater of extracted steam from turbine heating high-pressure.
The steam turbine water supply heat back system of described recovery waste heat steam also comprises condensate water heat riser 8, condensate water heat riser 8 is connected with high-pressure feed water heater 7 with low-pressure heater 5, and condensate water heat riser 8 can utilize the condensed water heating in high-pressure feed water heater 7 to enter the condensate water before low-pressure heater 5.Condensate water heat riser 8 is connected with gland steam heater 6.Condensate water heat riser 8 is connected with backwater booster pump 9.Backwater booster pump 9 is provided with bypass protector 91.Low-pressure heater 5 is connected with condenser 10 with gland steam heater 6, between gland steam heater 6 and condenser 10, is also provided with condensate pump 11.
In the steam turbine water supply heat back system of this recovery waste heat steam, integrated high-pressure feed water heater 7, condensate water heat riser 8, backwater booster pump 9 form the steam turbine water supply heat back system of a set of step recovery waste heat steam.Can reclaim to greatest extent plant area's waste heat, tool reduced investment simultaneously, the feature such as recovery waste heat efficiency is high, and system is simple, easy to maintenance and system run all right.
This high-pressure feed water heater 7 adopts Modular surface formula steam-water heat exchanging patterns, and can realize water level and automatically regulate.Integrated high-pressure is also provided with recirculation interface to hot-water heating system 7, has improved the regulating power of sending hydrophobic amount outside, has further guaranteed the stationary value of hydrophobic water level.
Integrated high-pressure is the main feedwater from boiler feed pump 3 to hot-water heating system 7 tube sides, is sent to boiler after heat exchange; Integrated high-pressure for from plant area's afterheat steam (vapor (steam) temperature is higher than main feedwater rated temperature) and substituted that steam turbine is high-quality to draw gas, produces high-temperature condensation water to hot-water heating system 7 shell sides after heat exchange.
High-temperature condensation water relies on back pressure to be sent to condensate water heat riser 8, condensate water heat riser 8 adopts Modular surface formula water water heat exchange pattern, be connected on condensing water conduit with original low-pressure heater 5, utilize integrated high-pressure to the high-temperature condensation water heat-setting water of hot-water heating system 7, improved the condensing water temperature that enters low-pressure heater 5, reduce steam turbine low adding and draw gas, improved generated energy.
Meeting under the prerequisite of technological requirement, integrated high-pressure feed water heater 7 and condensate water heat riser 8 have been realized step energy to greatest extent and have been reclaimed, adopt surface-type heat transfer technology, realize afterheat steam side completely separated with steam turbine feedwater side, can not produce water pollution, guarantee the high-quality requirement of boiler feedwater.Integrated high-pressure is all provided with bypass protection system to hot-water heating system 7 and condensate water heat riser 8, thereby has improved the stability of system operation.
Cryogenic condensation water after low-pressure heater 5 heat exchange, by returning waste heat source after 9 superchargings of backwater booster pump, the mass balance that keeps waste heat steam-water, backwater booster pump 9 and integrated high-pressure are chain to the water level of hot-water heating system 4, realize water level and automatically regulate, the fluctuation of having avoided water level to bring because of afterheat steam changes in flow rate.Backwater booster pump 9 is provided with bypass protector 91, thereby has improved the stability of system operation.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or the equivalent variations of doing according to the utility model scope of patent protection and modification, all should still belong to the category that this patent is contained.
Claims (8)
1. the steam turbine water supply heat back system of a recovery waste heat steam, it is characterized in that, the steam turbine water supply heat back system of described recovery waste heat steam comprises steam turbine (1), oxygen-eliminating device (2), high-pressure feed water heater (7) and low-pressure heater (5), oxygen-eliminating device (2) is connected with steam turbine (1), high-pressure feed water heater (7) is connected with oxygen-eliminating device (2), and low-pressure heater (5) is connected with steam turbine (1) with oxygen-eliminating device (2).
2. the steam turbine water supply heat back system of recovery waste heat steam according to claim 1, is characterized in that: oxygen-eliminating device (2) is connected with high-pressure feed water heater (7) by boiler feed pump (3).
3. the steam turbine water supply heat back system of recovery waste heat steam according to claim 2, it is characterized in that: one end of the tube side of high-pressure feed water heater (7) is connected with boiler feed pump (3), the other end of the tube side of high-pressure feed water heater (7) is connected with boiler (4).
4. the steam turbine water supply heat back system of recovery waste heat steam according to claim 2, is characterized in that: one end of the shell side of high-pressure feed water heater (7) is connected with plant area afterheat steam.
5. the steam turbine water supply heat back system of recovery waste heat steam according to claim 1, it is characterized in that: the steam turbine water supply heat back system of described recovery waste heat steam also comprises condensate water heat riser (8), condensate water heat riser (8) is connected with high-pressure feed water heater (7) with low-pressure heater (5), and condensate water heat riser (8) can utilize the condensed water heating in high-pressure feed water heater (7) to enter the front condensate water of low-pressure heater (5).
6. the steam turbine water supply heat back system of recovery waste heat steam according to claim 5, is characterized in that: condensate water heat riser (8) is connected with gland steam heater (6).
7. the steam turbine water supply heat back system of recovery waste heat steam according to claim 5, is characterized in that: condensate water heat riser (8) is connected with backwater booster pump (9).
8. the steam turbine water supply heat back system of recovery waste heat steam according to claim 7, is characterized in that: backwater booster pump (9) is provided with bypass protector (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533129.XU CN203431826U (en) | 2013-08-29 | 2013-08-29 | Steam turbine water supply heat regenerative system capable of recovering waste heat steam |
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| CN201320533129.XU CN203431826U (en) | 2013-08-29 | 2013-08-29 | Steam turbine water supply heat regenerative system capable of recovering waste heat steam |
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| CN203431826U true CN203431826U (en) | 2014-02-12 |
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| CN201320533129.XU Expired - Lifetime CN203431826U (en) | 2013-08-29 | 2013-08-29 | Steam turbine water supply heat regenerative system capable of recovering waste heat steam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402716A (en) * | 2015-10-12 | 2016-03-16 | 首钢水城钢铁（集团）有限责任公司 | Combined operation method for three low-voltage heaters |
| CN106382619A (en) * | 2016-11-09 | 2017-02-08 | 北京京诚科林环保科技有限公司 | Deep recycling system for gas-fired boiler flue gas waste heat |
| CN106523058A (en) * | 2016-12-05 | 2017-03-22 | 中冶华天工程技术有限公司 | Steam-driven blower system based on optimal utilization of saturated steam of steel mill |
| CN107420878A (en) * | 2017-03-28 | 2017-12-01 | 中国核电工程有限公司 | It is a kind of to carry out vapour, heat, the system of CCHP using nuclear energy |
| CN111834026A (en) * | 2020-06-12 | 2020-10-27 | 中国核电工程有限公司 | Industrial steam production system for pressurized water reactor nuclear power unit |
-
2013
- 2013-08-29 CN CN201320533129.XU patent/CN203431826U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402716A (en) * | 2015-10-12 | 2016-03-16 | 首钢水城钢铁（集团）有限责任公司 | Combined operation method for three low-voltage heaters |
| CN106382619A (en) * | 2016-11-09 | 2017-02-08 | 北京京诚科林环保科技有限公司 | Deep recycling system for gas-fired boiler flue gas waste heat |
| CN106523058A (en) * | 2016-12-05 | 2017-03-22 | 中冶华天工程技术有限公司 | Steam-driven blower system based on optimal utilization of saturated steam of steel mill |
| CN107420878A (en) * | 2017-03-28 | 2017-12-01 | 中国核电工程有限公司 | It is a kind of to carry out vapour, heat, the system of CCHP using nuclear energy |
| CN111834026A (en) * | 2020-06-12 | 2020-10-27 | 中国核电工程有限公司 | Industrial steam production system for pressurized water reactor nuclear power unit |
| CN111834026B (en) * | 2020-06-12 | 2023-03-14 | 中国核电工程有限公司 | Industrial steam production system for pressurized water reactor nuclear power unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140212 |
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| CX01 | Expiry of patent term |