Drain water recovery device and thermal power generation system

Abstract

The utility model discloses a drain water recovery device and a thermal power generation system, and belongs to the technical field of thermal power generation. The thermal power generation system comprises the drain water recovery device, and the drain water recovery device comprises a first drain water recovery assembly, a second drain water recovery assembly, a first switch valve and a second switch valve. A first starting drain tank of the first drain recovery assembly is used for being communicated with the first thermal power generation assembly so as to recover drain generated by the first thermal power generation assembly. A second starting drain tank of the second drain recovery assembly is used for being communicated with the second thermal power generation assembly so as to recover drain generated by the second thermal power generation assembly. An inlet of the first switch valve and an inlet of the second switch valve are both used for being communicated with an auxiliary steam main pipe, an outlet of the first switch valve is communicated with the first starting drain tank, and an outlet of the second switch valve is communicated with the second starting drain tank so that drain water generated by the auxiliary steam main pipe can be recycled. The drain water recovery device can recover drain water in the auxiliary steam main pipe, so that energy waste is reduced.

Description

Technical Field

[0001] This application belongs to the field of thermal power generation technology, specifically relating to a hydrophobic recovery device and a thermal power generation system. Background Technology

[0002] With the continuous growth of global energy demand, improving energy efficiency has become an important development direction for the thermal power generation industry.

[0003] In thermal power generation systems, auxiliary steam units are an indispensable part. They are responsible for providing the necessary auxiliary steam for the normal operation of the entire system and play a vital role in ensuring the stable operation of thermal power generation systems.

[0004] However, during the operation of the auxiliary steam unit, condensate often forms in the auxiliary steam header. This condensate is formed by the condensation of steam within the pipeline. If it is not discharged in a timely manner, it will negatively impact the normal operation of the auxiliary steam unit. Currently, the condensate in the auxiliary steam header is usually discharged directly into the sewer, resulting in significant energy waste. Utility Model Content

[0005] The purpose of this application is to provide a condensate recovery device and a thermal power generation system that can solve the problem in the related technology that the condensate in the auxiliary steam header is usually directly discharged into the ditch, causing serious energy waste.

[0006] In a first aspect, embodiments of this application provide a hydrophobic recovery device, which includes: a first hydrophobic recovery component, the first hydrophobic recovery component including a first start-up hydrophobic tank, the first start-up hydrophobic tank being connected to a first thermal power generation component to recover the hydrophobic water generated by the first thermal power generation component;

[0007] The second hydrophobic recovery assembly includes a second start-up hydrophobic tank, which is connected to the second thermal power generation assembly to recover the hydrophobic water generated by the second thermal power generation assembly.

[0008] A first switching valve and a second switching valve, the inlet of the first switching valve and the inlet of the second switching valve are both used to connect to the auxiliary steam header, and the outlet of the first switching valve is connected to the first start-up drain tank, and the outlet of the second switching valve is connected to the second start-up drain tank, so as to recover the condensate generated by the auxiliary steam header.

[0009] Secondly, embodiments of this application also provide a thermal power generation system, which includes a first thermal power generation component, a second thermal power generation component, an auxiliary steam header, and the aforementioned condensate recovery device. The first start-up condensate tank of the condensate recovery device is connected to the first thermal power generation component to recover the condensate generated by the first thermal power generation component. The second start-up condensate tank of the condensate recovery device is connected to the second thermal power generation component to recover the condensate generated by the second thermal power generation component. Furthermore, the inlet of the first switching valve and the inlet of the second switching valve of the condensate recovery device are both connected to the auxiliary steam header to recover the condensate generated by the auxiliary steam header.

[0010] In this embodiment, the first start-up condensate tank of the first condensate recovery assembly is connected to the first thermal power generation unit to recover condensate generated by the first thermal power generation unit. The second start-up condensate tank of the second condensate recovery assembly is connected to the second thermal power generation unit to recover condensate generated by the second thermal power generation unit. The inlet of both the first and second switching valves is connected to the auxiliary steam header. The outlet of the first switching valve is connected to the first start-up condensate tank, and the outlet of the second switching valve is connected to the second start-up condensate tank to recover condensate generated by the auxiliary steam header. In this configuration, condensate in the auxiliary steam header can be transported to either the first or second start-up condensate tank. This allows for the recovery of condensate in the auxiliary steam header using both the first condensate recovery assembly (for recovering condensate generated by the first thermal power generation unit) and the second condensate recovery assembly (for recovering condensate generated by the second thermal power generation unit), thereby reducing energy waste.

[0011] In addition, during actual use, when one of the first and second starting condensate tanks stops working, the auxiliary steam header can be connected to the other of the first and second starting condensate tanks by operating the first and second switching valves. In this state, the condensate in the auxiliary steam header can be recovered through the other of the first and second starting condensate tanks. In this way, even if a single starting condensate tank stops working, the condensate in the auxiliary steam header can still be recovered, thereby further reducing energy waste. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the hydrophobic recovery device disclosed in the embodiments of this application.

[0013] Explanation of reference numerals in the attached figures:

[0014] 100 - First hydrophobic recovery assembly; 110 - First start-up hydrophobic tank; 120 - First condenser;

[0015] 200 - Second hydrophobic recovery assembly; 210 - Second start-up hydrophobic tank; 220 - Second condenser;

[0016] 300 - First thermal power generation unit;

[0017] 400 - Second thermal power generation unit;

[0018] 500 - Auxiliary steam header, 510 - First pipe section, 520 - Second pipe section;

[0019] 600-Drainage pipe;

[0020] 700-Tee connector;

[0021] 810 - Booster pump; 820 - Liquid storage tank;

[0022] 910 - First valve, 920 - Second valve. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] The hydrophobic recovery device and thermal power generation system provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0026] Please refer to Figure 1 As shown in the embodiment of this application, a hydrophobic recovery device is provided, including: a first hydrophobic recovery component 100, a second hydrophobic recovery component 200, a first switching valve, and a second switching valve.

[0027] The first hydrophobic recovery assembly 100 includes a first start-up hydrophobic tank 110, which is connected to the first thermal power generation assembly 300 to recover the hydrophobic water generated by the first thermal power generation assembly 300.

[0028] The second hydrophobic recovery assembly 200 includes a second start-up hydrophobic tank 210, which is connected to the second thermal power generation assembly 400 to recover the hydrophobic water generated by the second thermal power generation assembly 400.

[0029] The inlet of the first switching valve and the inlet of the second switching valve are both connected to the auxiliary steam header 500, and the outlet of the first switching valve is connected to the first start-up drain tank 110, and the outlet of the second switching valve is connected to the second start-up drain tank 210, so as to recover the condensate generated by the auxiliary steam header 500.

[0030] Optionally, the first switch valve may be directly installed on the first start-up drain tank 110, and the first drain recovery assembly 100 may also include a third switch valve. The first thermal power generation assembly 300 may be connected to the first start-up drain tank 110 through the third switch valve. The third switch valve and the first switch valve may be connected to different positions of the first start-up drain tank 110, and both the third switch valve and the first switch valve may be manual valves.

[0031] Similarly, the second switch valve is, for example, directly installed on the second start-up drain tank 210, and the second drain recovery assembly 200 also includes, for example, a fourth switch valve. The second thermal power generation assembly 400 is connected to the second start-up drain tank 210 through the fourth switch valve. The fourth switch valve and the second switch valve are, for example, connected to different positions of the second start-up drain tank 210, and both the fourth switch valve and the second switch valve are, for example, manual valves.

[0032] In this embodiment, the first start-up drain tank 110 of the first drain recovery assembly 100 is connected to the first thermal power generation assembly 300 to recover the drain generated by the first thermal power generation assembly 300. The second start-up drain tank 210 of the second drain recovery assembly 200 is connected to the second thermal power generation assembly 400 to recover the drain generated by the second thermal power generation assembly 400. The inlet of the first switch valve and the inlet of the second switch valve are both connected to the auxiliary steam header 500. The outlet of the first switch valve is connected to the first start-up drain tank 110, and the outlet of the second switch valve is connected to the second start-up drain tank 210 to recover the drain generated by the auxiliary steam header 500. In this layout, the condensate in the auxiliary steam header 500 can be transported to the first start-up condensate tank 110 or the second start-up condensate tank 210. In this way, the condensate in the auxiliary steam header 500 can be recovered by the first condensate recovery component 100 for recovering the condensate generated by the first thermal power generation component 300 and the second condensate recovery component 200 for recovering the condensate generated by the second thermal power generation component 400, thereby reducing energy waste.

[0033] In addition, during actual use, when one of the first starting drain tank 110 and the second starting drain tank 210 stops working, the auxiliary steam header 500 can be connected to the other of the first starting drain tank 110 and the second starting drain tank 210 by operating the first switching valve and the second switching valve. In this state, the condensate in the auxiliary steam header 500 can be recovered through the other of the first starting drain tank 110 and the second starting drain tank 210. In this way, even if a single starting drain tank stops working, the condensate in the auxiliary steam header 500 can still be recovered, thereby further reducing energy waste.

[0034] It should be noted that a thermal power generation system typically includes thermal power generation components, condensate recovery components, auxiliary equipment, and auxiliary steam units. The thermal power generation components are, for example, the first thermal power generation component 300 or the second thermal power generation component 400 mentioned above. The thermal power generation components are mainly used for power generation and are the core components of the thermal power generation system. Optionally, the thermal power generation components may include components such as boilers and steam turbines.

[0035] Each hydrophobic condensate recovery component corresponds one-to-one with a thermal power generation component. Each hydrophobic condensate recovery component is used to recover the hydrophobic condensate generated during the operation of its corresponding thermal power generation component. The hydrophobic condensate recovery component is, for example, the first hydrophobic condensate recovery component 100 or the second hydrophobic condensate recovery component 200 mentioned above. In this embodiment, the first hydrophobic condensate recovery component 100 corresponds to the first thermal power generation component 300, and the second hydrophobic condensate recovery component 200 corresponds to the second thermal power generation component 400. The first hydrophobic condensate recovery component 100 can, for example, recover the hydrophobic condensate generated during the operation of the boiler of the first thermal power generation component 300, and the second hydrophobic condensate recovery component 200 can, for example, recover the hydrophobic condensate generated during the operation of the boiler of the second thermal power generation component 400. When the first thermal power generation component 300 stops operating, the first hydrophobic condensate recovery component 100 stops operating as well, and when the second thermal power generation component 400 stops operating, the second hydrophobic condensate recovery component 200 also stops operating as well.

[0036] Auxiliary equipment is used to assist the operation of thermal power generation components. Auxiliary equipment includes, for example, coal mills, and auxiliary steam units supply steam to the auxiliary equipment to enable its normal operation. The auxiliary steam unit typically includes the auxiliary steam header 500 mentioned above, which is the main pipe of the auxiliary steam unit. In actual use, the steam in the auxiliary steam header 500 condenses, resulting in condensation in the auxiliary steam header 500.

[0037] In one specific implementation, the first hydrophobic recovery assembly 100 may further include a first condenser 120, which is connected to the first start-up hydrophobic tank 110. In actual use, the hydrophobic water collected in the first start-up hydrophobic tank 110 is transported to the first condenser 120, where it recovers the heat from the hydrophobic water. The hydrophobic water is then sent to other components that require water, thus achieving the reuse of the hydrophobic water. In this way, both waste heat in the hydrophobic water can be recovered and the hydrophobic water can be reused, thereby reducing energy waste and saving water production costs.

[0038] Similarly, the second hydrophobic recovery assembly 200 also includes, for example, a second condenser 220, which is connected to the second start-up hydrophobic tank 210. In actual use, the hydrophobic water collected in the second start-up hydrophobic tank 210 is transported to the second condenser 220, which recovers the heat from the hydrophobic water and then sends the hydrophobic water to other components that need water, thereby realizing the reuse of the hydrophobic water. This also reduces energy waste and saves water production costs.

[0039] It should also be noted that, in this embodiment of the application, the condensate recovery component of the thermal power generation system, which is used to recover the condensate of the thermal power generation components, is used to recover the condensate in the auxiliary steam header 500. Compared with the solution of adding a special condensate recovery device to recover the condensate in the auxiliary steam header 500, the solution provided in this embodiment of the application is lower in cost, and the structure of the thermal power generation system is simpler when using the solution provided in this embodiment of the application.

[0040] In another embodiment, reference Figure 1 As shown, the condensate recovery device also includes a tee connector 700 and a drain pipe 600. The tee connector 700 is also called a tee fitting. The first port of the tee connector 700 is used to connect, for example, to the outlet of the first section 510 of the auxiliary steam header 500. The second port of the tee connector 700 is used to connect, for example, to the inlet of the second section 520 of the auxiliary steam header 500. The inlet of the first switching valve is used to connect, for example, to the outlet of the second section 520 of the auxiliary steam header 500. The third port of the tee connector 700 is connected to the inlet of the second switching valve through the drain pipe 600.

[0041] By using the solution in this embodiment, a tee joint 700 is added between the two sections of the auxiliary steam header 500, and an additional drain pipe 600 is added, so that the inlet of both the first and second switching valves can be connected to the auxiliary steam header 500. This reduces the number of additional components required, thus saving costs.

[0042] In actual use, after the condensate in the first pipe section 510 reaches the tee joint 700, there are two condensate paths. One is to be transported along the second pipe section 520 to the first switch valve, and then through the first switch valve into the first start-up condensate tank 110. The other is to be transported along the condensate pipe 600 to the second switch valve, and then through the second switch valve into the second start-up condensate tank 210.

[0043] Optionally, the tee connector 700 is connected to the first pipe section 510, the second pipe section 520, and the drain pipe 600, for example, by welding.

[0044] In other alternative embodiments, the condensate recovery device may also include a tee connector 700, a first condensate drain pipe, and a second condensate drain pipe. In this case, the first port of the tee connector 700 is connected to one end of the auxiliary steam header 500, the second port of the tee connector 700 is connected to the inlet of the first switch valve through the first condensate drain pipe, and the third port of the tee connector 700 is connected to the inlet of the second switch valve through the second condensate drain pipe.

[0045] In another embodiment, reference Figure 1 As shown, the hydrophobic recovery device also includes a booster pump 810, which is located in the hydrophobic pipe 600. Optionally, the booster pump 810 may be located, for example, between two adjacent pipe sections of the hydrophobic pipe 600 and connected to both pipe sections.

[0046] In actual use, the booster pump 810 can provide additional pressure for the flow of liquid, such as condensate, in the drain pipe 600, thereby reducing the occurrence of situations where condensate in the drain pipe 600 cannot be delivered to the second start-up drain tank 210 due to insufficient pressure.

[0047] In other alternative embodiments, the hydrophobic recovery device may also exclude the booster pump 810.

[0048] In a further embodiment, reference is made to... Figure 1 As shown, the hydrophobic recovery device also includes a storage tank 820, which is disposed in the hydrophobic pipe 600. Optionally, the storage tank 820 may be located, for example, between two adjacent pipe sections of the hydrophobic pipe 600 and connected to both pipe sections. The storage tank 820 and the booster pump 810 are arranged sequentially, for example, along the flow direction of the liquid within the hydrophobic pipe 600. The flow direction of the liquid within the hydrophobic pipe 600 is, for example, […]. Figure 1 The direction indicated by the middle arrow A.

[0049] In this embodiment, the condensate in the auxiliary steam header 500 flows to the storage tank 820 first, and the storage tank 820 can collect the condensate. In this way, the booster pump 810 can be turned on after the liquid level in the storage tank 820 reaches the preset liquid level. This helps the booster pump 810 to operate stably and extends its service life.

[0050] In other alternative embodiments, the hydrophobic recovery device may also exclude the liquid storage tank 820.

[0051] In a further embodiment, reference is made to... Figure 1 As shown, the hydrophobic recovery device also includes at least two valves, including a first valve 910 and a second valve 920. Both the first valve 910 and the second valve 920 are located within the hydrophobic pipe 600, and the storage tank 820 and the booster pump 810 are located between the first valve 910 and the second valve 920. Optionally, the hydrophobic pipe 600 may include, for example, a first section, a second section, and a third section arranged sequentially along the flow direction of the liquid within the hydrophobic pipe 600. The first valve 910 is, for example, located between the first and second sections and connected to both sections. The second valve 920 is, for example, located between the second and third sections and connected to both sections. The storage tank 820 and the booster pump 810 are, for example, both located in the second section.

[0052] In this embodiment, the first valve 910 and the second valve 920 divide the drain pipe 600 into multiple sections. When the first valve 910 and the second valve 920 are closed, it is possible to prevent drain water from flowing to the section between the first valve 910 and the second valve 920, such as the second section mentioned above. This facilitates the maintenance of the drain pipe 600 corresponding to the section between the first valve 910 and the second valve 920 and the components connected to that section, such as the liquid storage tank 820 and the booster pump 810 mentioned above.

[0053] Furthermore, at least two valves may also include other valves besides the first valve 910 and the second valve 920, in which case the valves are arranged sequentially, for example, along the flow direction of the liquid within the drain pipe 600. With this arrangement, the other valves besides the first valve 910 and the second valve 920 can further separate the aforementioned sections, making the maintenance of the drain pipe 600 and the components connected to it more convenient.

[0054] In other alternative embodiments, the hydrophobic recovery device may not include valves, or the number of valves may be one.

[0055] In a further embodiment, the hydrophobic recovery device also includes a liquid level detection device located in the liquid storage tank 820 and used to detect the liquid level in the liquid storage tank 820.

[0056] In this embodiment, the hydrophobic recovery device is also equipped with a liquid level detection device. Based on the liquid level information detected by the liquid level detection device, the liquid level in the storage tank 820 can be accurately determined. In actual use, it is necessary to control the working state of the booster pump 810 according to the liquid level in the storage tank 820, such as controlling the start and stop of the booster pump 810. Therefore, the solution of this embodiment facilitates precise control of the operation of the booster pump 810.

[0057] In another embodiment, the hydrophobic recovery device also includes a control element, with both the liquid level detection device and the booster pump 810 communicatively connected to the control element. With this configuration, the control element can automatically control the booster pump 810 based on the liquid level information detected by the liquid level detection device, thereby saving manpower.

[0058] In actual use, when the liquid level in the storage tank 820 reaches the first liquid level value, the control element controls the booster pump 810 to work. When the liquid level in the storage tank 820 reaches the second liquid level value, the control element controls the booster pump 810 to stop working, and the second liquid level value is, for example, less than the first liquid level value.

[0059] Alternatively, the control element may be, for example, a control circuit board or a controller.

[0060] In other alternative embodiments, the hydrophobic recovery device may not include control elements, in which case, for example, the user needs to manually control the booster pump 810 to operate.

[0061] In a further embodiment, the hydrophobic recovery device also includes a display, which is communicatively connected to the control element. The display shows the liquid level in the storage tank 820, where the liquid is, for example, the hydrophobic liquid mentioned above. With this configuration, the user can intuitively understand the liquid level in the storage tank 820 through the display, thus facilitating real-time monitoring of the liquid level in the storage tank 820.

[0062] In other alternative embodiments, the hydrophobic recovery device may also exclude the display.

[0063] In another embodiment, the drain pipe 600 is wrapped with a heat insulation layer. The water inside the drain pipe 600 typically has a certain temperature, which makes the drain pipe 600 itself also at a relatively high temperature. In this case, the heat insulation layer can reduce the possibility of users accidentally touching the drain pipe 600 and getting burned, while also preventing heat from being transferred outward, thereby reducing heat waste.

[0064] Alternatively, the insulation layer may be made of, for example, an insulating material.

[0065] In other alternative embodiments, the outside of the drainage pipe 600 may not be provided with a heat insulation layer.

[0066] This application embodiment also provides a thermal power generation system, which includes a first thermal power generation component 300, a second thermal power generation component 400, an auxiliary steam header 500, and the aforementioned condensate recovery device. The first start-up condensate tank 110 of the condensate recovery device is connected to the first thermal power generation component 300 to recover the condensate generated by the first thermal power generation component 300. The second start-up condensate tank 210 of the condensate recovery device is connected to the second thermal power generation component 400 to recover the condensate generated by the second thermal power generation component 400. The inlet of the first switching valve and the inlet of the second switching valve of the condensate recovery device are both connected to the auxiliary steam header 500 to recover the condensate generated by the auxiliary steam header 500.

[0067] The thermal power generation system includes the aforementioned condensate recovery device, which can recover condensate generated by the auxiliary steam header 500. Therefore, the thermal power generation system also recovers condensate generated by the auxiliary steam header 500, thereby reducing energy waste. Furthermore, as mentioned earlier, this thermal power generation system utilizes the existing condensate recovery device for recovering condensate from the thermal power generation components to recover condensate within the auxiliary steam header 500. Compared to adding a dedicated condensate recovery device to recover condensate from the auxiliary steam header 500, the thermal power generation system provided in this embodiment has lower cost and a simpler structure.

[0068] In one specific implementation, the thermal power generation system includes, for example, a mounting frame, on which the aforementioned drain pipe 600 is suspended. With this configuration, the drain pipe 600 is connected to the mounting frame, which provides reliable support for the drain pipe 600, thereby improving its stability.

[0069] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A hydrophobic recovery device, characterized by, The application relates to a steam recovery device. The steam recovery device comprises a first steam recovery assembly (100) and a second steam recovery assembly (200), wherein the first steam recovery assembly (100) comprises a first start-up steam tank (110) which is used in communication with a first thermal power generation assembly (300) to recover steam generated by the first thermal power generation assembly (300); the second steam recovery assembly (200) comprises a second start-up steam tank (210) which is used in communication with a second thermal power generation assembly (400) to recover steam generated by the second thermal power generation assembly (400). The steam recovery device further comprises a three-way joint (700) and a steam pipe (600), wherein a first port of the three-way joint (700) is used in communication with an outlet of a first pipe section (510) of an auxiliary steam main pipe (500), a second port of the three-way joint (700) is used in communication with an inlet of a second pipe section (520) of the auxiliary steam main pipe (500), an inlet of the first switch valve is used in communication with an outlet of the second pipe section (520) of the auxiliary steam main pipe (500), and a third port of the three-way joint (700) is in communication with an inlet of the second switch valve through the steam pipe (600). The steam recovery device further comprises a booster pump (810) which is arranged in the steam pipe (600).

2. The hydrophobic recovery device of claim 1, wherein, The steam recovery device further comprises a liquid storage tank (820) which is arranged in the steam pipe (600), and the liquid storage tank (820) and the booster pump (810) are arranged in sequence along a flow direction of liquid in the steam pipe (600).

3. The hydrophobic recovery device of claim 2, wherein, The steam recovery device further comprises at least two valves, including a first valve (910) and a second valve (920), wherein the first valve (910) and the second valve (920) are arranged in the steam pipe (600), and the liquid storage tank (820) and the booster pump (810) are located between the first valve (910) and the second valve (920).

4. The hydrophobic recovery device of claim 3, wherein, The steam recovery device further comprises a liquid level detection device which is arranged in the liquid storage tank (820) and is used for detecting a liquid level of liquid in the liquid storage tank (820).

5. The hydrophobic recovery device of claim 4, wherein, The steam recovery device further comprises a control element, and the liquid level detection device and the booster pump (810) are in communication connection with the control element.

6. The hydrophobic recovery device of claim 4, wherein, The steam recovery device further comprises a display which is in communication connection with the control element, and the display is used for displaying the liquid level of liquid in the liquid storage tank (820).

7. The hydrophobic recovery device of claim 6, wherein, The steam pipe (600) is wrapped with a heat insulation layer.

8. The hydrophobic recovery device of claim 7, wherein, ​ 9. The hydrophobic recovery device of claim 2, wherein, ​ 10. A thermal power generation system, characterized by comprising: The first thermal power generating assembly (300), the second thermal power generating assembly (400), the auxiliary steam main pipe (500) and the hydrophobic recovery device as claimed in any one of claims 1-9, the first start-up hydrophobic tank (110) of the hydrophobic recovery device is communicated with the first thermal power generating assembly (300) to recover the hydrophobic water generated by the first thermal power generating assembly (300), the second start-up hydrophobic tank (210) of the hydrophobic recovery device is communicated with the second thermal power generating assembly (400) to recover the hydrophobic water generated by the second thermal power generating assembly (400), and the inlet of the first switch valve of the hydrophobic recovery device and the inlet of the second switch valve of the hydrophobic recovery device are both communicated with the auxiliary steam main pipe (500) to recover the hydrophobic water generated by the auxiliary steam main pipe (500).

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