CN112902143A - Waste heat recovery vacuum system of steam extractor - Google Patents
Waste heat recovery vacuum system of steam extractor Download PDFInfo
- Publication number
- CN112902143A CN112902143A CN202110408002.4A CN202110408002A CN112902143A CN 112902143 A CN112902143 A CN 112902143A CN 202110408002 A CN202110408002 A CN 202110408002A CN 112902143 A CN112902143 A CN 112902143A
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- steam
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- pipeline
- heat exchanger
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- 239000002918 waste heat Substances 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 195
- 238000002955 isolation Methods 0.000 claims abstract description 27
- 238000000926 separation method Methods 0.000 claims description 77
- 238000005086 pumping Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- 238000010248 power generation Methods 0.000 abstract description 6
- 239000003245 coal Substances 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000000243 solution Substances 0.000 description 3
- 239000012224 working solution Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/26—Steam-separating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/10—Auxiliary systems, arrangements, or devices for extracting, cooling, and removing non-condensable gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a waste heat recovery vacuum system of a steam extractor, which comprises a steam turbine, wherein one end of the steam turbine is provided with a steam exhaust device, the steam exhaust device is communicated with the steam turbine, a hot well is arranged below the steam exhaust device, one side of the steam exhaust device is provided with a water jet steam extractor, a water jet steam extractor suction inlet pipeline is arranged between the water jet steam extractor and the steam exhaust device, the water jet steam extractor is communicated with the steam exhaust device through the water jet steam extractor suction inlet pipeline, a water jet steam extractor suction inlet pipeline isolation valve is arranged inside the water jet steam extractor suction inlet pipeline, and one end of the water jet steam extractor is provided with a water jet steam extractor power source pipeline. Has the advantages that: the system greatly improves the efficiency of the unit, reduces the coal consumption of power generation of a power plant, maintains the normal vacuum of the unit, overcomes the technical defect of the water ring vacuum pump, and solves the problem that the vacuum of the unit cannot be maintained when the environmental temperature is high.
Description
Technical Field
The invention relates to the field of waste heat recovery, in particular to a waste heat recovery vacuum system of a steam extractor.
Background
At present, in the unit of the thermal power industry in China, a large amount of energy is consumed every day to enable the unit to normally operate, so that normal power generation can be guaranteed. In the whole unit operation process, residual heat in a plurality of devices cannot be recycled well and is wasted uselessly, and other devices need to consume energy to obtain heat and power so as to maintain normal operation.
The power plant usually adopts the water ring vacuum pump to come as vacuum pumping system, connect the condenser through the female pipe connection of bleeding, come the gas in the suction condenser, in order to maintain the vacuum degree of condenser, the temperature of water ring vacuum pump working solution receives the influence of cooling water (circulating water or closed water), the cooling water temperature receives weather conditions influence greatly, temperature variation is great, especially summer, the circulating water temperature exceeds thirty degrees, in addition certain heat transfer difference in temperature, the working solution temperature will exceed forty degrees, vacuum pump working solution vaporizes in a large number this moment, cause vacuum pump blade cavitation and produce the high noise, the air exhaust ability sharply descends, can't maintain the normal vacuum of working of condenser. The cavitation causes blade cracks and even breaks, and the blade needs to be maintained every year, so that the safety and the economical efficiency of unit operation are seriously influenced.
The deaerator is a hybrid heater that removes oxygen and other non-condensable gases from boiler feed water. The oxygen removing method comprises two modes of chemical oxygen removing and thermal oxygen removing, and most power plants adopt thermal oxygen removing. That is, the feed water is heated to boiling by the steam to precipitate oxygen, the precipitated oxygen is directly discharged to the atmosphere, and part of the steam is also directly discharged.
However, the above system has the following problems:
(1) and the water-ring vacuum pump is driven by a motor, so that the service power consumption is increased. The water ring vacuum pump needs to overhaul an impeller, and replace a bearing and a sealing element every year.
(2) The water ring vacuum pump is sealed by water, is influenced by the environmental temperature, and particularly in summer, the air pumping capacity is sharply reduced, so that the normal working vacuum of the air cooling island cannot be maintained.
(3) When the deaerator deaerates, the heat of the discharged steam and the working medium are directly lost.
(4) The gas in the unit vacuum pumping mother pipe has a large part of dead steam besides dry air and other non-condensable gases, and the water ring vacuum pump is adopted for vacuum pumping, so that the waste of heat of the part of dead steam and working media is caused.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a waste heat recovery vacuum system of a steam extractor, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a steam extractor waste heat recovery vacuum system comprises a steam turbine, wherein one end of the steam turbine is provided with a steam exhaust device, the steam exhaust device is communicated with the steam turbine, a hot well is arranged below the steam exhaust device, one side of the steam exhaust device is provided with a water jet steam extractor, a water jet steam extractor suction inlet pipeline is arranged between the water jet steam extractor and the steam exhaust device, the water jet steam extractor is communicated with the steam exhaust device through the water jet steam extractor suction inlet pipeline, a water jet steam extractor suction inlet pipeline isolation valve is arranged inside the water jet steam extractor suction inlet pipeline, one end of the water jet steam extractor is provided with a water jet steam extractor power source pipeline, a water jet steam extractor power source pipeline isolation valve is arranged inside the water jet steam extractor power source pipeline, a steam-water separation heat exchanger is arranged at one side of the water jet steam extractor, and a water jet steam extractor discharge outlet pipeline is arranged between the steam separation heat exchanger and the water jet steam extractor, the steam-water separation heat exchanger is communicated with the water-injection steam extractor through a water-injection steam extractor outlet pipeline, a deaerator is arranged on one side of the steam-water separation heat exchanger, a deaerator steam exhaust eduction pipe pipeline is arranged between the deaerator and the steam-water separation heat exchanger, the deaerator is communicated with the steam-water separation heat exchanger through the deaerator steam exhaust eduction pipe pipeline, a deaerator steam exhaust eduction pipe pipeline isolation valve is arranged inside the deaerator steam exhaust eduction pipe pipeline, a unit vacuum pump is arranged below the deaerator, a unit vacuum pumping system main pipe pipeline is arranged on one side of the unit vacuum pump, and the unit vacuum pump is communicated with the steam exhaust device through the unit vacuum pumping system main pipe pipeline.
Furthermore, one end of the steam-water separation heat exchanger is provided with a deaerator steam exhaust pipeline.
Furthermore, a deaerator steam exhaust pipeline isolating valve is arranged inside the deaerator steam exhaust pipeline.
Furthermore, a water outlet pipeline of the steam-water separation heat exchanger is arranged at the bottom end of the steam-water separation heat exchanger, and the steam-water separation heat exchanger is communicated with the hot well through the water outlet pipeline of the steam-water separation heat exchanger.
Furthermore, a steam-water separation heat exchanger water outlet pipeline drain valve is arranged inside the steam-water separation heat exchanger water outlet pipeline.
Furthermore, the power source of the water-jet steam extractor adopts unit condensed water.
Furthermore, a steam-water separation heat exchanger atmospheric air exhaust pipeline is arranged at the top end of the steam-water separation heat exchanger.
According to another aspect of the invention, an energy-saving process for a vacuum system for recovering waste heat of a steam extractor is provided.
The method comprises the following steps:
step S101: and opening a power source pipeline isolation valve of the water jet steam extractor, opening a suction inlet pipeline isolation valve of the water jet steam extractor, and putting the water jet steam extractor into operation.
Step S102: the power source (condensed water) enters the water-jet steam extractor through a power source pipeline of the water-jet steam extractor.
Step S103: steam in a main pipe of the unit vacuum pumping system is led out by the water jet steam extractor through a water jet steam extractor suction inlet pipeline, and a newly generated mixed medium enters the steam-water separation heat exchanger through a water jet steam extractor discharge outlet pipeline.
Step S104: and opening a deaerator exhaust steam outlet pipeline isolation valve, closing the deaerator exhaust steam outlet pipeline isolation valve, and allowing deaerator exhaust steam to enter the steam-water separation heat exchanger through a deaerator exhaust steam outlet pipeline.
Step S105: the mixed medium discharged by the water-jet steam extractor and deaerator exhaust steam led out from a deaerator exhaust steam lead-out pipe pipeline are fully mixed and exchanged heat in the steam-water separation heat exchanger.
Step S106: and water separated from the steam-water separation heat exchanger is discharged into the hot well through a water outlet pipeline of the steam-water separation heat exchanger, and non-condensable gas separated from the steam-water separation heat exchanger is discharged into the atmosphere through an atmosphere discharge pipeline of the steam-water separation heat exchanger.
Compared with the prior art, the invention has the following beneficial effects:
(1) and the steam in the mother pipe of the vacuum pumping system of the unit is extracted by using the water jet steam extractor and using the condensed water of the unit as a power source, and the mixed medium enters the steam-water separation heat exchanger to heat the condensed water.
(2) And the steam discharged by the deaerator is discharged into the steam-water separation heat exchanger, so that the working medium and heat in the steam discharged by the deaerator are recovered, and the operation cost is reduced.
(3) And the whole system adopts a water jet steam extractor, and when the system is put into operation, the water ring vacuum pump of the original unit is stopped, and no service power is needed. The waste heat is recovered, the vacuum degree of the unit is maintained and improved, and the coal consumption of power generation is reduced.
(4) The whole system adopts the water injection steam extractor, has no rotating part, has no maintenance in later operation, greatly improves the unit efficiency, reduces the power plant power generation coal consumption, maintains the normal vacuum of the unit, overcomes the technical defect of a water ring vacuum pump, and solves the problem that the vacuum of the unit cannot be maintained when the environmental temperature is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a main structure of a vacuum system for recovering waste heat from a steam extractor according to an embodiment of the present invention;
FIG. 2 is one of the energy saving process flow diagrams according to an embodiment of the present invention
FIG. 3 is a second flowchart of an energy saving process according to an embodiment of the present invention.
Reference numerals:
1. a steam turbine; 2. a steam exhaust device; 3. a hot well; 4. a deaerator; 5. a water jet steam extractor; 6. a steam-water separation heat exchanger; 7. a unit vacuum pump; 8. a water jet steam extractor power source pipeline; 9. a power source pipeline isolating valve of the water jet steam extractor; 10. a water jet steam extractor suction inlet pipeline; 11. the pipeline isolation valve of the water jet steam extractor suction inlet; 12. a main pipe line of a unit vacuumizing system; 13. a water jet steam extractor discharge port pipeline; 14. a deaerator exhaust steam outlet pipe pipeline; 15. a deaerator exhaust steam outlet pipe pipeline isolation valve; 16. a deaerator exhaust line; 17. an exhaust pipeline isolation valve of the deaerator; 18. a water outlet pipeline of the steam-water separation heat exchanger; 19. a drain valve of a water outlet pipeline of the steam-water separation heat exchanger; 20. and the steam-water separation heat exchanger is used for exhausting the atmosphere.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
the first embodiment is as follows:
referring to fig. 1-3, a vacuum system for recovering waste heat of a steam extractor according to an embodiment of the present invention includes a steam turbine 1, and is characterized in that an exhaust device 2 is disposed at one end of the steam turbine 1, the exhaust device 2 is communicated with the steam turbine 1, a hot well 3 is disposed below the exhaust device 2, a water jet steam extractor 5 is disposed at one side of the exhaust device 2, a water jet steam extractor suction inlet pipeline 10 is disposed between the water jet steam extractor 5 and the exhaust device 2, the water jet steam extractor 5 is communicated with the exhaust device 2 through the water jet steam extractor suction inlet pipeline 10, a water jet steam extractor suction inlet pipeline isolation valve 11 is disposed inside the water jet steam extractor suction inlet pipeline 10, a water jet steam extractor power source pipeline 8 is disposed at one end of the water jet steam extractor 5, a water jet steam extractor power source pipeline isolation valve 9 is disposed inside the water jet steam extractor power source 8, a steam-water separation heat exchanger 6 is arranged on one side of the water injection steam extractor 5, a water injection steam extractor discharge port pipeline 13 is arranged between the steam-water separation heat exchanger 6 and the water injection steam extractor 5, the steam-water separation heat exchanger 6 is communicated with the water injection steam extractor 5 through the water injection steam extractor discharge port pipeline 13, a deaerator 4 is arranged on one side of the steam-water separation heat exchanger 6, a deaerator steam exhaust outlet pipeline 14 is arranged between the deaerator 4 and the steam-water separation heat exchanger 6, the deaerator 4 is communicated with the steam-water separation heat exchanger 6 through the deaerator steam exhaust outlet pipeline 14, a deaerator steam exhaust outlet pipeline isolation valve 15 is arranged inside the deaerator steam exhaust outlet pipeline 14, a unit vacuum pump 7 is arranged below the deaerator 4, a unit vacuum pumping system main pipe pipeline 12 is arranged on one side of the unit vacuum pump 7, and the unit vacuum pump 7 is connected with the steam exhaust device 2 through the unit vacuum system main pipe 12 The steam-water separation heat exchanger is characterized in that a deaerator steam exhaust pipeline 16 is arranged at one end of the steam-water separation heat exchanger 6, a deaerator steam exhaust pipeline isolation valve 17 is arranged inside the deaerator steam exhaust pipeline 16, a steam-water separation heat exchanger water outlet pipeline 18 is arranged at the bottom end of the steam-water separation heat exchanger 6, the steam-water separation heat exchanger 6 passes through the steam-water separation heat exchanger water outlet pipeline 18 and the hot well 3 are communicated, a steam-water separation heat exchanger water outlet pipeline drain valve 19 is arranged inside the steam-water separation heat exchanger water outlet pipeline 18, unit condensed water is adopted as a power source of the water jet steam extractor 5, and a steam-water separation heat exchanger steam exhaust pipeline 20 is arranged.
Through the scheme, the invention relates to a waste heat recovery vacuum system of a steam extractor, which is a system for realizing heat energy and working medium recovery through a vacuum system of a unit. The steam-water mixed medium is discharged into a steam-water separation heat exchanger 6, and simultaneously, the steam discharged by a deaerator 4 is introduced into the steam-water separation heat exchanger 6 for heat exchange. The steam brought out when the deaerator 4 deaerates and the working medium and the heat of the exhaust steam in the vacuum pumping main pipe of the unit are recovered, and the temperature of condensed water is improved, so that the efficiency of the unit is improved, the coal consumption of power plant power generation is reduced, the normal vacuum of the unit is maintained, the technical defect of a water ring vacuum pump is overcome, and the problem that the vacuum of the unit cannot be maintained when the environment temperature is high is solved.
As shown in fig. 1-3, an energy saving process for a vacuum system for recovering waste heat of a steam extractor is also provided according to an embodiment of the present invention.
The method comprises the following steps:
step S101: and opening a power source pipeline isolation valve 9 of the water-jet steam extractor, opening a suction inlet pipeline isolation valve 11 of the water-jet steam extractor, and putting the water-jet steam extractor 5 into operation.
Step S102: the power source condensed water enters the water-jet steam extractor 5 through a power source pipeline 8 of the water-jet steam extractor.
Step S103: steam in a main pipe 12 of the vacuum pumping system of the unit is led out by the water jet steam extractor 5 through a water jet steam extractor suction inlet pipeline 10, and a newly generated mixed medium enters the steam-water separation heat exchanger 6 through a water jet steam extractor discharge outlet pipeline 13.
Step S104: and opening a deaerator exhaust steam outlet pipe pipeline isolation valve 15, closing a deaerator exhaust steam pipeline isolation valve 17, and allowing deaerator exhaust steam to enter the steam-water separation heat exchanger 6 through a deaerator exhaust steam outlet pipe pipeline 14.
Step S105: the mixed medium discharged by the water-jet steam extractor 5 and deaerator exhaust steam led out from a deaerator exhaust steam lead-out pipe line 14 are fully mixed and exchanged heat in the steam-water separation heat exchanger 6.
Step S106: the water separated from the steam-water separation heat exchanger 6 is discharged into the hot well 3 through a steam-water separation heat exchanger water outlet pipeline 18, and the non-condensed gas separated from the steam-water separation heat exchanger 6 is discharged into the atmosphere through a steam-water separation heat exchanger atmosphere discharge pipeline 20.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the invention relates to a waste heat recovery vacuum system of a steam extractor, which is a system for realizing heat energy and working medium recovery through a vacuum system of a unit. The steam-water mixed medium is discharged into a steam-water separation heat exchanger 6, and simultaneously, the steam discharged by a deaerator 4 is introduced into the steam-water separation heat exchanger 6 for heat exchange. The steam brought out when the deaerator 4 deaerates and the working medium and the heat of the exhaust steam in the vacuum pumping main pipe of the unit are recovered, and the temperature of condensed water is improved, so that the efficiency of the unit is improved, the coal consumption of power plant power generation is reduced, the normal vacuum of the unit is maintained, the technical defect of a water ring vacuum pump is overcome, and the problem that the vacuum of the unit cannot be maintained when the environment temperature is high is solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A steam extractor waste heat recovery vacuum system comprises a steam turbine (1) and is characterized in that one end of the steam turbine (1) is provided with a steam exhaust device (2), the steam exhaust device (2) is communicated with the steam turbine (1), a hot well (3) is arranged below the steam exhaust device (2), one side of the steam exhaust device (2) is provided with a water jet steam extractor (5), a water jet steam extractor suction inlet pipeline (10) is arranged between the water jet steam extractor (5) and the steam exhaust device (2), the water jet steam extractor (5) is communicated with the steam exhaust device (2) through the water jet steam extractor suction inlet pipeline (10), a water jet steam extractor suction inlet pipeline isolation valve (11) is arranged inside the water jet steam extractor suction inlet pipeline (10), one end of the water jet steam extractor (5) is provided with a water jet steam extractor power source pipeline (8), a steam jet steam extractor power source pipeline isolation valve (9) is arranged inside the water jet steam extractor power source pipeline (8), a steam-water separation heat exchanger (6) is arranged on one side of the water jet steam extractor (5), a steam-water separation steam extractor discharge port pipeline (13) is arranged between the steam-water separation heat exchanger (6) and the water jet steam extractor (5), the steam-water separation heat exchanger (6) is communicated with the water jet steam extractor (5) through the steam-water injection steam extractor discharge port pipeline (13), a deaerator (4) is arranged on one side of the steam-water separation heat exchanger (6), a deaerator steam exhaust lead-out pipeline (14) is arranged between the deaerator (4) and the steam-water separation heat exchanger (6), the deaerator (4) is communicated with the steam-water separation heat exchanger (6) through the deaerator steam exhaust lead-out pipeline (14), a deaerator steam exhaust lead-out pipeline isolation valve (15) is arranged inside the deaerator steam exhaust lead-out pipeline (14), the deaerator (4) is provided with a unit vacuum pump (7), one side of the unit vacuum pump (7) is provided with a unit vacuumizing system main pipe line (12), and the unit vacuum pump (7) is communicated with the steam exhaust device (2) through the unit vacuumizing system main pipe line (12).
2. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 1, wherein one end of the steam-water separation heat exchanger (6) is provided with a deaerator steam exhaust pipeline (16).
3. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 2, wherein the steam exhaust pipeline (16) of the deaerator is internally provided with a deaerator steam exhaust pipeline isolation valve (17).
4. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 2, wherein a steam-water separation heat exchanger water outlet pipeline (18) is arranged at the bottom end of the steam-water separation heat exchanger (6), and the steam-water separation heat exchanger (6) is communicated with the hot well (3) through the steam-water separation heat exchanger water outlet pipeline (18).
5. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 4, wherein a steam-water separation heat exchanger drain outlet pipeline drain valve (19) is arranged in the steam-water separation heat exchanger drain outlet pipeline (18).
6. The vacuum system for recovering waste heat of a steam extractor as claimed in claim 1, wherein the power source of the water jet steam extractor (5) is set condensed water.
7. The vacuum system for recovering the waste heat of the steam extractor as claimed in claim 4, wherein the top end of the steam-water separation heat exchanger (6) is provided with a steam-water separation heat exchanger atmospheric air discharge pipeline (20).
8. An energy saving process for a steam extractor waste heat recovery vacuum system, characterized in that the energy saving process for the steam extractor waste heat recovery vacuum system of claim 7, comprises the steps of:
step S101: opening a power source pipeline isolation valve (9) of the water-jet steam extractor, opening a suction inlet pipeline isolation valve (11) of the water-jet steam extractor, and putting the water-jet steam extractor (5) into operation.
Step S102: the power source (condensed water) enters the water-jet steam extractor (5) through a power source pipeline (8) of the water-jet steam extractor.
Step S103: steam in a main pipe (12) of the vacuum pumping system of the unit is led out by the water-jet steam extractor (5) through a water-jet steam extractor suction inlet pipeline (10), and a newly generated mixed medium enters the steam-water separation heat exchanger (6) through a water-jet steam extractor discharge outlet pipeline (13).
Step S104: and opening a deaerator steam exhaust outlet pipe pipeline isolation valve (15), closing a deaerator steam exhaust pipeline isolation valve (17), and enabling deaerator steam to enter the steam-water separation heat exchanger (6) through a deaerator steam exhaust outlet pipe pipeline (14).
Step S105: the mixed medium discharged by the water-jet steam extractor (5) and deaerator exhaust steam led out by a deaerator exhaust steam lead-out pipeline (14) are fully mixed and exchanged heat in the steam-water separation heat exchanger (6).
Step S106: water separated from the steam-water separation heat exchanger (6) is discharged into the hot well (3) through a water outlet pipeline (18) of the steam-water separation heat exchanger, and non-condensable gas separated from the steam-water separation heat exchanger (6) is discharged into the atmosphere through an atmosphere discharge pipeline (20) of the steam-water separation heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110408002.4A CN112902143A (en) | 2021-04-15 | 2021-04-15 | Waste heat recovery vacuum system of steam extractor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110408002.4A CN112902143A (en) | 2021-04-15 | 2021-04-15 | Waste heat recovery vacuum system of steam extractor |
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| CN112902143A true CN112902143A (en) | 2021-06-04 |
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| CN202110408002.4A Pending CN112902143A (en) | 2021-04-15 | 2021-04-15 | Waste heat recovery vacuum system of steam extractor |
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| CN106121751A (en) * | 2016-08-04 | 2016-11-16 | 联合瑞升（北京）科技有限公司 | A kind of hot press heating energy-saving system |
| CN209012059U (en) * | 2018-10-30 | 2019-06-21 | 杭州非耀真空设备有限公司 | A kind of high-efficiency and energy-saving type ventilation type Roots's water-ring vacuum pump assembly |
| CN214582594U (en) * | 2021-04-15 | 2021-11-02 | 恒坤聚能(北京)科技有限公司 | Waste heat recovery vacuum system of steam extractor |
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