CN112944310A - Steam condensate water recycling system - Google Patents
Steam condensate water recycling system Download PDFInfo
- Publication number
- CN112944310A CN112944310A CN202110162722.7A CN202110162722A CN112944310A CN 112944310 A CN112944310 A CN 112944310A CN 202110162722 A CN202110162722 A CN 202110162722A CN 112944310 A CN112944310 A CN 112944310A
- Authority
- CN
- China
- Prior art keywords
- steam
- assembly
- flash tank
- steam condensate
- compressor assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a steam condensate water recycling system, which comprises: the steam condensate enters the flash tank assembly through the regulating valve, the steam condensate is subjected to gas-liquid separation in the flash tank assembly, and the steam flows upwards after passing through a filter screen of the flash tank assembly; the steam compressor assembly is communicated with the flash tank assembly and is used for compressing steam in the flash tank assembly; the steam compressor assembly is also communicated with an air inlet of the steam heating equipment, and the steam compressed by the steam compressor assembly flows back to the steam heating equipment again. According to the steam condensate water recycling system, the steam condensate water is subjected to gas-liquid separation by using the flash tank assembly, and the separated steam is compressed by using the steam compressor assembly, so that the steam is changed from low-pressure steam into high-pressure steam, and the high-pressure steam can enter the steam heating equipment again, and the utilization rate of the steam condensate water is effectively improved.
Description
Technical Field
The invention relates to a steam condensate water recycling system.
Background
Heating equipment used in chemical industry, rubber, textile, wine brewing, plastics, building materials, metallurgy and other industries in China all uses steam as a heating source, and the steam is condensed in the equipment to release heat, then becomes saturated water under the same pressure, and is discharged through a steam trap. The steam condensate leaving the steam heating plant still contains around 25% of the steam heat. If the steam condensate is to be reused, the steam condensate needs to be cooled by cooling water and then recycled. The steam condensate cooling and recycling system is complex and high in cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a steam condensate water recycling system.
The invention is realized by the following technical scheme:
a steam condensate recycling system for recycling steam condensate produced by a steam heating apparatus, the steam condensate recycling system comprising:
the steam condensate enters the flash tank assembly through a regulating valve, the steam condensate is subjected to gas-liquid separation in the flash tank assembly, and the steam flows upwards after passing through a filter screen of the flash tank assembly;
a vapor compressor assembly in communication with said flash tank assembly, said vapor compressor assembly for compressing vapor within said flash tank assembly; the steam compressor assembly is also communicated with an air inlet of the steam heating equipment, and the steam compressed by the steam compressor assembly flows back to the steam heating equipment again.
Further, the steam condensate recycling system further comprises a buffer tank, the buffer tank is arranged between the steam compressor assembly and the steam heat supply equipment, and the buffer tank is used for stabilizing the pressure of steam flowing out of the steam compressor assembly.
Further, the steam condensate water recycling system further comprises a one-way valve, the one-way valve is arranged between the steam compressor assembly and the buffer tank, and the one-way valve is used for preventing steam in the buffer tank from flowing back to the steam compressor assembly.
Further, the steam condensate recycling system further comprises a water spraying cooling assembly, and the water spraying cooling assembly is used for reducing the temperature of the steam compressor assembly.
Furthermore, the water spray cooling component comprises a cooling regulating valve and a cooling end pressure device, and cooling water flows through the end pressure device and the regulating valve in sequence and then cools the steam compressor component.
Further, a drain valve is arranged between the steam heating equipment and the flash tank assembly.
Further, the bottom of flash tank subassembly is equipped with the drain pipe, and liquid water certainly the drain pipe flows the flash tank subassembly.
Further, the temperature of the steam flowing out of the flash tank ranges from 85 ℃ to 120 ℃, and the pressure of the steam ranges from 0.85bar to 2 bar.
Further, the pressure of the steam flowing from the steam compressor assembly to the steam heating apparatus ranges from 7bar to 8 bar.
Further, the temperature of the steam condensate flowing out of the steam heating apparatus ranges from 110 ℃ to 170 ℃.
The invention has the beneficial effects that: carry out gas-liquid separation to the steam condensate water through utilizing the flash tank subassembly, recycle the steam compressor subassembly and compress the steam after the separation to make vapour become high-pressure steam by low pressure steam, and then high-pressure steam can get into steam heating equipment once more, improved the utilization ratio of steam condensate water effectively, avoided cooling down the steam condensate water and handled.
Drawings
Fig. 1 is a schematic structural view of a steam condensate recycling system according to an embodiment of the present invention.
Description of reference numerals:
steam condensate reuse system 100
Flash tank assembly 20
Regulating valve 21
Water spray cooling assembly 40
Temperature-reducing regulating valve 41
Temperature-reducing filament winding device 42
Detailed Description
The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.
As shown in fig. 1, the present embodiment discloses a steam condensate recycling system 100, the steam condensate recycling system 100 being used for recycling steam condensate generated by a steam heating apparatus 11, the steam condensate recycling system 100 including: the steam condensate enters the flash tank assembly 20 through the regulating valve 21, the steam condensate is subjected to gas-liquid separation in the flash tank assembly 20, and the steam flows upwards after passing through a filter screen 23 of the flash tank assembly 20; a vapor compressor assembly 30, the vapor compressor assembly 30 being in communication with the flash tank assembly 20, the vapor compressor assembly 30 being adapted to compress vapor within the flash tank assembly 20; the vapor compressor assembly 30 is also communicated with the air inlet of the vapor heating device 11, and the vapor compressed by the vapor compressor assembly 30 flows back to the vapor heating device 11 again. This embodiment is through utilizing flash tank subassembly 20 to carry out gas-liquid separation to the steam condensate water, recycles steam compressor subassembly 30 and compresses the steam after the separation to make vapour become high-pressure steam by low-pressure steam, and then high-pressure steam can get into steam heating equipment 11 once more, improved the utilization ratio of steam condensate water effectively, avoided cooling the steam condensate water and handled.
In order to stabilize the pressure, the steam condensate recycling system 100 further includes a buffer tank 50, the buffer tank 50 is disposed between the steam compressor assembly 30 and the steam heating apparatus 11, and the buffer tank 50 is used for stabilizing the pressure of the steam flowing out of the steam compressor assembly 30.
In fig. 1, vapor compressor assembly 30 also includes a compressor lubrication assembly 31 to enable better lubrication of associated components. Vapor compressor package 30 may also use a screw-type water vapor compressor package that can tolerate a small amount of liquid water in the suction air.
In order to avoid the backflow, the steam condensate recycling system 100 further includes a check valve disposed between the steam compressor assembly 30 and the buffer tank 50, and the check valve is used for preventing the steam in the buffer tank 50 from flowing back to the steam compressor assembly 30.
To improve stability and reliability, the steam condensate recycling system 100 further includes a water spray cooling assembly 40, and the water spray cooling assembly 40 is used for reducing the temperature of the steam compressor assembly 30.
In one embodiment, the water spray cooling assembly 40 includes a cooling control valve 41 and a cooling end pressure device 42, and the cooling water flows through the end pressure device and the control valve 21 first and then cools the vapor compressor assembly 30.
A steam trap 12 is further arranged between the steam heating device 11 and the flash tank assembly 20, so that steam can be effectively prevented from directly entering the flash tank assembly 20.
As shown in fig. 1, the bottom of the flash tank assembly 20 is provided with a drain from which liquid water flows out of the flash tank assembly 20. The side of the flash tank assembly 20 may also be provided with a liquid level gauge 22 so that the volume of liquid water can be effectively monitored.
As an embodiment, the temperature of the steam exiting the flash tank assembly 20 ranges from 85 ℃ to 120 ℃ and the pressure of the steam ranges from 0.85bar to 2 bar. The pressure of the steam flowing from the steam compressor assembly 30 to the steam heating apparatus 11 is in the range of 7bar to 8 bar. The temperature of the steam condensate flowing out of the steam heating apparatus 11 ranges from 110 to 170 ℃. The pressure of the steam in the buffer tank 50 may range from 4bar to 8 bar. The steam pressure within the flash tank assembly 20 may range from 0.85bar to 2bar and the temperature may range from 85 ℃ to 120 ℃. The temperature of the liquid water exiting the flash tank assembly 20 may also range from 85 ℃ to 120 ℃.
As a using mode, saturated steam with the pressure ranging from 5bar to 8bar is changed into steam condensate water with the temperature of 120 ℃ to 170 ℃ after passing through the steam heating device 11. Steam condensate flows through the trap 12 and the regulator valve 21 to the flash tank assembly 20. In the process, the pressure of the steam condensate is reduced, 5-10% of the steam condensate is changed into low-pressure saturated steam, and the balance is low-pressure saturated liquid water. The low-pressure saturated steam is compressed by the steam compressor assembly 30 and then is converted into high-pressure steam, so that the steam can be supplied to the steam heating apparatus 11.
Specific embodiments may be as follows: in the steam heating device 11, the high-pressure steam releases heat and changes phase to steam condensate. The steam condensate passes through the steam trap 12 and the regulating valve 21 and then becomes low-pressure gas-liquid two-phase mixed water. Gas-liquid two-phase water is subjected to gas-liquid separation in the flash tank assembly 20, liquid water is deposited at the bottom of the flash tank assembly 20, and steam is filtered by a filter screen 23 in the flash tank assembly 20 and then is sucked by the steam compressor assembly 30.
The steam condensate flows from the flash tank assembly 20 with a final outlet temperature of the steam condensate in the range of 85 deg.C to 120 deg.C
The low pressure steam generated by the pressure reduction flash evaporation of the steam condensate is compressed by the steam compressor assembly 30 and then is changed into high pressure steam. The exhaust temperature is easily overheated in the water vapor compression process, so the compression process needs the water spray cooling assembly 40 to reduce the exhaust temperature. The water spraying amount is controlled by using the temperature reduction regulating valve 41, so that the exhaust temperature is ensured to be in a reasonable range, such as 180 ℃. The exhaust pipeline can be additionally provided with an exhaust check valve to prevent the screw type water vapor compressor unit from seriously reversing after the shutdown.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A steam condensate recycling system for recycling steam condensate produced by a steam heating apparatus, the steam condensate recycling system comprising:
the steam condensate enters the flash tank assembly through a regulating valve, the steam condensate is subjected to gas-liquid separation in the flash tank assembly, and the steam flows upwards after passing through a filter screen of the flash tank assembly;
a vapor compressor assembly in communication with said flash tank assembly, said vapor compressor assembly for compressing vapor within said flash tank assembly; the steam compressor assembly is also communicated with an air inlet of the steam heating equipment, and the steam compressed by the steam compressor assembly flows back to the steam heating equipment again.
2. The steam condensate recycling system of claim 1, further comprising a buffer tank disposed between the steam compressor assembly and the steam heat supply device, the buffer tank configured to stabilize a pressure of steam exiting the steam compressor assembly.
3. The steam condensate recycling system of claim 2, further comprising a check valve disposed between the steam compressor assembly and the buffer tank, the check valve configured to prevent steam within the buffer tank from flowing back to the steam compressor assembly.
4. The steam condensate recycling system of claim 1, further comprising a water spray desuperheating assembly for reducing a temperature of the steam compressor assembly.
5. The steam condensate recycling system of claim 4, wherein the water spray cooling assembly comprises a cooling regulating valve and a cooling end pressure device, and the cooling water flows through the end pressure device and the regulating valve in sequence and then cools the steam compressor assembly.
6. The steam condensate recycling system of claim 1, further comprising a trap between the steam heating apparatus and the flash tank assembly.
7. The steam condensate reuse system of claim 1, wherein a drain is provided at a bottom of the flash tank assembly, and liquid water flows out of the flash tank assembly through the drain.
8. The steam condensate reuse system of claim 1, wherein the temperature of the steam exiting the flash tank ranges from 85 ℃ to 120 ℃ and the pressure of the steam ranges from 0.85bar to 2 bar.
9. The steam condensate reuse system of claim 1, wherein the pressure of the steam flowing from the steam compressor assembly to the steam heating apparatus is in the range of 7bar to 8 bar.
10. The steam condensate recycling system of claim 1, wherein the temperature of the steam condensate flowing from the steam heating apparatus is in the range of 110 ℃ to 170 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110162722.7A CN112944310A (en) | 2021-02-05 | 2021-02-05 | Steam condensate water recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110162722.7A CN112944310A (en) | 2021-02-05 | 2021-02-05 | Steam condensate water recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112944310A true CN112944310A (en) | 2021-06-11 |
Family
ID=76242780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110162722.7A Pending CN112944310A (en) | 2021-02-05 | 2021-02-05 | Steam condensate water recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112944310A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2622394A (en) * | 2022-09-14 | 2024-03-20 | James Cropper Plc | A steam supply system and a method of supplying steam |
-
2021
- 2021-02-05 CN CN202110162722.7A patent/CN112944310A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2622394A (en) * | 2022-09-14 | 2024-03-20 | James Cropper Plc | A steam supply system and a method of supplying steam |
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