CN214094443U - High-efficient flash vessel exhaust steam recovery plant surely arranges based on energy multilevel utilization - Google Patents
High-efficient flash vessel exhaust steam recovery plant surely arranges based on energy multilevel utilization Download PDFInfo
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- CN214094443U CN214094443U CN202022833022.XU CN202022833022U CN214094443U CN 214094443 U CN214094443 U CN 214094443U CN 202022833022 U CN202022833022 U CN 202022833022U CN 214094443 U CN214094443 U CN 214094443U
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Abstract
The utility model discloses a flash vessel exhaust steam recovery plant is decided to high efficiency based on energy multilevel utilization relates to exhaust steam and retrieves technical field. The utility model discloses an exhaust steam recovery unit, exhaust steam recovery unit has the row's device surely through water piping connection, be equipped with first hydraulic pipeline and second hydraulic pipeline between exhaust steam recovery unit and the surface type heat exchanger of water, first hydraulic pipeline carries the surface type heat exchanger of water with the high temperature demineralized water in the exhaust steam recovery unit to carry out the heat transfer on the road, reuse in returning exhaust steam recovery unit by the second hydraulic pipeline after the heat transfer cooling again, be equipped with the third hydraulic pipeline that is used for carrying low temperature demineralized water between surface type heat exchanger of water and the mucking machine, the surface type heat exchanger of water is connected with the fourth hydraulic pipeline, discharge through the fourth hydraulic pipeline after the low temperature demineralized water heat transfer heaies up, exhaust steam recovery unit still is connected with water drainage pipeline. The utility model discloses make full use of heat energy heats low temperature demineralized water, carries out cyclic utilization, environmental protection high efficiency to the demineralized water simultaneously.
Description
Technical Field
The utility model relates to an exhaust steam retrieves technical field, specifically is a flash tank exhaust steam recovery plant is decided to high efficiency based on energy multilevel utilization.
Background
Along with the increasing trend of the situation of double control of energy, the price of coal is also increasing, and energy conservation is more urgent under the current situation, and meanwhile, a large amount of industrial boilers and power station boilers regularly discharge pollution, continuously discharge the pollution, drain flash vessels and the like generate a large amount of steam with low-level heat energy for air discharge in the operation process. The high-temperature desalted water generated by the existing dead steam recovery equipment is directly discharged, and also causes great waste.
SUMMERY OF THE UTILITY MODEL
The not enough to prior art, the utility model provides a flash vessel exhaust steam recovery plant is decided to high efficiency based on energy multilevel utilization has solved the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a high-efficiency fixed-discharge flash vessel exhaust steam recovery device based on energy multistage utilization comprises an exhaust steam recovery device, a water-water surface type heat exchanger and a slag extractor, wherein the exhaust steam recovery device is connected with the fixed-discharge device through a water pipe, a first water pipeline and a second water pipeline are arranged between the exhaust steam recovery device and the water-water surface type heat exchanger, high-temperature desalted water in the exhaust steam recovery device is conveyed to the water-water surface type heat exchanger for heat exchange on the first water pipeline, the high-temperature desalted water is returned to the exhaust steam recovery device through the second water pipeline after heat exchange and temperature reduction and is reused as secondary steam absorption water, a third water pipeline for conveying low-temperature desalted water is arranged between the water-water surface type heat exchanger and the slag extractor, the water-water surface type heat exchanger is connected with a fourth water pipeline, the low-temperature desalted water is discharged through the fourth water pipeline after heat exchange and temperature rise, and the exhaust steam recovery device is further connected with a water discharge pipeline, the drainage pipeline comprises a detection section, a straight discharge section and a recovery section which are communicated, the detection section is communicated with the exhaust steam recovery device, the detection section is provided with a first control valve for controlling on-off, a first high-temperature water pump and a detection device for monitoring whether the water quality meets the boiler water supply requirement or not, the recovery section is connected with a third water conveying pipeline, a second control valve for controlling the on-off is arranged on the recovery section, the system is characterized in that a third control valve for controlling on-off is arranged on the direct discharging section, the first control valve, the second control valve, the third control valve and the detection device are all connected with the controller, the detection device detects that the water is qualified, the second control valve is opened, the water path of the recovery section is conducted, high-temperature demineralized water in the exhaust steam recovery device is conveyed to a third water conveying pipeline to be mixed for use, otherwise, the direct discharging section is conducted to be directly discharged, and the exhaust steam recovery device and the slag extractor are connected with a water replenishing pipeline for replenishing low-temperature demineralized water.
Preferably, the first control valve is a butterfly valve, and the second control valve and the third control valve are electric ball valves.
Preferably, a liquid level meter is arranged on the side wall in the exhaust steam recovery device and connected with the controller, and when the liquid level exceeds the liquid level meter, the controller starts a drainage pipeline to work to discharge the desalted water in the exhaust steam recovery device.
Preferably, the two liquid level meters are respectively arranged at a high position and a low position, when the liquid level is higher than the high position, the controller controls the drainage pipeline to drain water, and when the liquid level is lower than the low position, the drainage is stopped.
Preferably, a second high-temperature water pump is arranged on the first water conveying pipeline.
The utility model has the advantages that:
according to the efficient dead steam recycling equipment for the fixed-displacement flash tank based on the multistage utilization of the energy, dead steam is recycled through the dead steam recycling device, and desalted water is recycled through the design of a first water conveying pipeline, a second water conveying pipeline, a third water conveying pipeline, a water replenishing pipeline, a water-water surface type heat exchanger and a water discharging pipeline; the low-temperature desalted water used for heat exchange is primarily heated through the surface of the slag extractor, so that heat energy is fully utilized, and heat pollution is reduced; meanwhile, the drainage pipeline carries out different discharge treatments aiming at different water qualities, the water quality requirements are met, the water is conveyed into the third water conveying pipeline for reuse, on one hand, the use efficiency of heat energy is improved, the heating effect of low-temperature desalted water is better, and on the other hand, the recycling of the desalted water is promoted.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure: 1. a waste steam recovery device; 2. a water-water surface heat exchanger; 4. a slag discharging machine; 5. a row fixing device; 6. a first water conveying pipeline; 7. a second water conveying pipeline; 8. a third water conveying pipeline; 9. a fourth water conveying pipeline; 10. a drain line; 101. a detection section; 1011. a first control valve; 1012. a first high temperature water pump; 1013. a detection device; 102. a straight row section; 1021. a second control valve; 103. a recovery section; 1031. A third control valve; 11. a water replenishing pipeline; 12. and a second high-temperature water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a high-efficiency constant-discharge flash vessel exhaust steam recovery device based on energy multistage utilization comprises an exhaust steam recovery device, a water-water surface type heat exchanger and a slag extractor, wherein the exhaust steam recovery device generally comprises a rotary membrane absorber and a water tank, the exhaust steam recovery device is connected with a constant-discharge device through a water pipe, a first water conveying pipeline and a second water conveying pipeline are arranged between the exhaust steam recovery device and the water-water surface type heat exchanger, high-temperature desalted water in the exhaust steam recovery device is conveyed to the water-water surface type heat exchanger for heat exchange on the first water conveying pipeline, the high-temperature desalted water is returned to the exhaust steam recovery device through the second water conveying pipeline for reuse as secondary steam absorption water after heat exchange and temperature reduction, a third water conveying pipeline for conveying low-temperature desalted water is arranged between the water-water surface type heat exchanger and the slag extractor, the water-water surface type heat exchanger is connected with a fourth water conveying pipeline, and the low-temperature desalted water is discharged through the fourth water conveying pipeline after heat exchange and temperature rise, the exhaust steam recovery device is also connected with a drainage pipeline, the drainage pipeline comprises a detection section, a straight-line section and a recovery section which are communicated, the detection section is communicated with the exhaust steam recovery device, a first control valve for controlling on-off, a first high-temperature water pump and a detection device for monitoring whether the water quality meets the boiler water supply requirement are arranged on the detection section, the recovery section is connected with a third water conveying pipeline, a second control valve for controlling the on-off is arranged on the recovery section, the system is characterized in that a third control valve for controlling on-off is arranged on the direct discharging section, the first control valve, the second control valve, the third control valve and the detection device are all connected with the controller, the detection device detects that the water is qualified, the second control valve is opened, the water path of the recovery section is conducted, high-temperature demineralized water in the exhaust steam recovery device is conveyed to a third water conveying pipeline to be mixed for use, otherwise, the direct discharging section is conducted to be directly discharged, and the exhaust steam recovery device and the slag extractor are both connected with a water replenishing pipeline for replenishing low-temperature demineralized water. Control valves are correspondingly arranged on other pipelines for conveying water, and are not indicated one by one here and belong to the conventional design.
The first control valve is a butterfly valve, and the second control valve and the third control valve are electric ball valves.
And a liquid level meter is arranged on the side wall in the exhaust steam recovery device and is connected with the controller, and when the liquid level height exceeds the liquid level meter, the controller starts a drainage pipeline to work to discharge desalted water in the exhaust steam recovery device.
The liquid level meters are arranged at a high level and a low level respectively, when the liquid level is higher than the high level, the liquid level timing controller controls the drainage pipeline to drain water, and when the liquid level is lower than the low level, the liquid level timing controller stops draining water.
And a second high-temperature water pump is arranged on the first water conveying pipeline.
When the steam exhaust recovery device works (or is used), the exhaust steam is discharged into the exhaust steam recovery device through the fixed-displacement device, the exhaust steam is mixed with low-temperature demineralized water for heat exchange in the exhaust steam recovery device, the low-temperature demineralized water is heated and then gathered in a water tank of the exhaust steam recovery device, the high-temperature demineralized water is sent to the water surface type heat exchanger through the second high-temperature water pump, the low-temperature demineralized water input from the third water pipeline is heated, the low-temperature demineralized water is heated and then sent to places needing to be used, such as a demineralized water tank or a deaerator, and the high-temperature demineralized water sent out from the water tank is cooled through the heat exchange of the water surface type heat exchanger and then returns to the exhaust steam recovery device for reuse as secondary steam absorption water. When the water level in the water tank is higher than the set value, the water is automatically discharged to the normal water level. The discharged water is discharged into a third conveying pipe when the detection of the detection device meets the boiler water supply requirement; if the requirement is not met, the waste water is discharged into a clear water system to be used as the raw water for desalting water. And low temperature demineralized water is sent to the export of mucking machine heating before water surface heat exchanger heat transfer, make full use of heat energy, and the environmental protection is high-efficient.
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 (5)
1. A high-efficiency fixed-discharge flash vessel exhaust steam recovery device based on energy multistage utilization comprises an exhaust steam recovery device, a water-water surface type heat exchanger and a slag extractor, wherein the exhaust steam recovery device is connected with the fixed-discharge device through a water pipe, a first water pipeline and a second water pipeline are arranged between the exhaust steam recovery device and the water-water surface type heat exchanger, high-temperature desalted water in the exhaust steam recovery device is conveyed to the water-water surface type heat exchanger for heat exchange on the first water pipeline, the high-temperature desalted water is returned to the exhaust steam recovery device through the second water pipeline after heat exchange and temperature reduction and is reused as secondary steam absorption water, a third water pipeline for conveying low-temperature desalted water is arranged between the water-water surface type heat exchanger and the slag extractor, the water-water surface type heat exchanger is connected with a fourth water pipeline, the low-temperature desalted water is discharged through the fourth water pipeline after heat exchange and temperature rise, and the exhaust steam recovery device is further connected with a water discharge pipeline, the drainage pipeline comprises a detection section, a straight discharge section and a recovery section which are communicated, the detection section is communicated with the exhaust steam recovery device, the detection section is provided with a first control valve for controlling on-off, a first high-temperature water pump and a detection device for monitoring whether the water quality meets the boiler water supply requirement or not, the recovery section is connected with a third water conveying pipeline, a second control valve for controlling the on-off is arranged on the recovery section, the system is characterized in that a third control valve for controlling on-off is arranged on the direct discharging section, the first control valve, the second control valve, the third control valve and the detection device are all connected with the controller, the detection device detects that the water is qualified, the second control valve is opened, the water path of the recovery section is conducted, high-temperature demineralized water in the exhaust steam recovery device is conveyed to a third water conveying pipeline to be mixed for use, otherwise, the direct discharging section is conducted to be directly discharged, and the exhaust steam recovery device and the slag extractor are connected with a water replenishing pipeline for replenishing low-temperature demineralized water.
2. The efficient dead steam recycling device for the fixed-displacement flash tank based on the multistage utilization of the energy sources, as claimed in claim 1, is characterized in that: the first control valve is a butterfly valve, and the second control valve and the third control valve are electric ball valves.
3. The efficient dead steam recycling device for the fixed-displacement flash tank based on the multistage utilization of the energy sources, as claimed in claim 1, is characterized in that: and a liquid level meter is arranged on the side wall in the exhaust steam recovery device and is connected with the controller, and when the liquid level height exceeds the liquid level meter, the controller starts a drainage pipeline to work to discharge desalted water in the exhaust steam recovery device.
4. The efficient dead steam recycling device for the fixed-displacement flash tank based on the multistage utilization of the energy sources, according to claim 3, is characterized in that: the liquid level meters are arranged at a high level and a low level respectively, when the liquid level is higher than the high level, the liquid level timing controller controls the drainage pipeline to drain water, and when the liquid level is lower than the low level, the liquid level timing controller stops draining water.
5. The efficient dead steam recycling device for the fixed-displacement flash tank based on the multistage utilization of the energy sources, as claimed in claim 1, is characterized in that: and a second high-temperature water pump is arranged on the first water conveying pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022833022.XU CN214094443U (en) | 2020-12-01 | 2020-12-01 | High-efficient flash vessel exhaust steam recovery plant surely arranges based on energy multilevel utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022833022.XU CN214094443U (en) | 2020-12-01 | 2020-12-01 | High-efficient flash vessel exhaust steam recovery plant surely arranges based on energy multilevel utilization |
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| Publication Number | Publication Date |
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| CN214094443U true CN214094443U (en) | 2021-08-31 |
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| CN202022833022.XU Active CN214094443U (en) | 2020-12-01 | 2020-12-01 | High-efficient flash vessel exhaust steam recovery plant surely arranges based on energy multilevel utilization |
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| CN (1) | CN214094443U (en) |
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- 2020-12-01 CN CN202022833022.XU patent/CN214094443U/en active Active
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