CN114135858A - Water feeding method and system applied to waste heat boiler - Google Patents
Water feeding method and system applied to waste heat boiler Download PDFInfo
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- CN114135858A CN114135858A CN202111295196.8A CN202111295196A CN114135858A CN 114135858 A CN114135858 A CN 114135858A CN 202111295196 A CN202111295196 A CN 202111295196A CN 114135858 A CN114135858 A CN 114135858A
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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
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- 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
- F22B37/52—Washing-out devices
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- 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
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The application provides a water feeding method and system for exhaust-heat boiler, the water feeding method is including being provided with high pressure water feed module, middling pressure water feed module, low pressure water feed module to and be used for carrying the condensate water in the condenser to the condensate pump of high pressure water feed module, middling pressure water feed module and low pressure water feed module respectively, still be equipped with condensate water to high pressure water feed pump entry governing valve between condensate pump and the high pressure water feed module, the water feeding method includes following step: s1, starting a condensate pump, opening a regulating valve for regulating the condensate to the inlet of the high-pressure water feed pump, and simultaneously respectively conveying the condensate in the condenser to the high-pressure water feed module, the medium-pressure water feed module and the low-pressure water feed module; s2, starting a low-pressure water supply module, and washing a low-pressure steam drum with water; s3, starting the medium-pressure water supply module, and washing the medium-pressure steam drum with water; and S4, starting the high-pressure water supply module, and washing the high-pressure steam pocket with water. This application can shorten water feeding time and power consumption greatly.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of waste heat boilers, in particular to a water feeding method and system applied to a waste heat boiler.
[ background of the invention ]
The gas-steam combined cycle generator set has the advantages of high efficiency, low consumption, quick start, flexible adjustment, high availability, investment saving, short construction period, small environmental pollution and the like, and is increasingly valued and developed in the domestic and foreign electric power industry.
After the unit is shut down for a plurality of days, the waste heat boiler is maintained by discharging water into the heating furnace according to the regulation requirement. Therefore, before the unit is started, the high-pressure steam drum, the medium-pressure steam drum and the low-pressure steam drum of the boiler need to be flushed and filled with water to reach the normal water level. In the boiler water feeding operation, the method generally has two types: firstly, the condensate pump, the medium-pressure water feeding pump and the high-pressure water feeding pump are started to respectively feed water to the low steam pocket, the medium steam pocket and the high steam pocket, the water feeding time is about 2 hours, and the total power consumption is 1304 KW.h. And secondly, starting the condensate water replenishing pump to respectively replenish water to the low steam pocket, the middle steam pocket and the high steam pocket, wherein the water replenishing time is about 9 hours, and the total power consumption is 352 KW.h. The first method requires a large amount of electricity for water supply, and the second method requires a long time for water supply.
[ summary of the invention ]
The application aims to provide a water feeding method and a water feeding system applied to a waste heat boiler, which can greatly shorten the water feeding time and the power consumption.
The application is realized by the following technical scheme:
a waste heat boiler water feeding method comprises the following steps:
a high-pressure water supply module is arranged on a high-pressure steam drum in the waste heat boiler;
a medium-pressure water supply module is arranged on a medium-pressure steam drum in the waste heat boiler;
a low-pressure water supply module is arranged on a low-pressure steam drum in the waste heat boiler; and
the condenser is provided with a condensate pump which is used for respectively conveying condensate in the condenser to the high-pressure water supply module, the medium-pressure water supply module and the low-pressure water supply module;
the condensed water is communicated with the high-pressure water supply module through a condensed water inlet adjusting valve of the high-pressure water supply pump, and the water supply method comprises the following steps:
s1, starting a condensate pump, opening a regulating valve for regulating the condensate to the inlet of the high-pressure water feed pump, and respectively conveying the condensate in the condenser to the high-pressure water feed module, the medium-pressure water feed module and the low-pressure water feed module;
s2, starting a low-pressure water supply module, and washing a low-pressure steam drum with water;
s3, starting the medium-pressure water supply module, and washing the medium-pressure steam drum with water;
and S4, starting the high-pressure water supply module, and washing the high-pressure steam pocket with water.
In the above water supply method applied to the waste heat boiler, in step S1, the condensate pump is started by frequency conversion, and the frequency of the condensate pump is maintained at 26HZ to 40HZ and the outlet pressure of the condensate pump is maintained at 1.2MPa to 1.8 MPa.
In the above water supply method for the exhaust-heat boiler, in step S1, the adjusting valve of the inlet of the condensate-to-high-pressure feed water pump is the adjusting valve of the inlet of the condensate-to-high-pressure feed water pump, and the adjusting valve of the inlet of the condensate-to-high-pressure feed water pump is opened to 100% opening.
In the above water supply method applied to the exhaust-heat boiler, in step S2, the low-pressure water supply module is a low-pressure water supply regulating valve, and the low-pressure water supply regulating valve is opened to perform water supply washing on the low-pressure steam drum.
In step S3, the medium-pressure water supply module includes a medium-pressure water supply pump and a medium-pressure water supply regulating valve connected thereto, and the medium-pressure water supply pump inlet manual door, the outlet electric door, and the medium-pressure water supply regulating valve are opened to flush the medium-pressure steam drum.
In step S4, the high-pressure water supply module includes a high-pressure water supply pump and a high-pressure water supply regulating valve connected thereto, and the high-pressure water supply pump inlet manual door, the outlet electric door and the high-pressure water supply regulating valve are opened to flush the high-pressure steam drum.
According to the water feeding method applied to the waste heat boiler, after the inlet manual door, the outlet electric door and the medium-pressure water feeding regulating valve of the medium-pressure water feeding pump are opened, the outlet pressure of the medium-pressure water feeding pump is maintained to be 0.3-0.4 MPa.
According to the water feeding method applied to the waste heat boiler, after the inlet manual door, the outlet electric door and the high-pressure water supply regulating valve of the high-pressure water supply pump are opened, the outlet pressure of the high-pressure water supply pump is maintained to be 0.3-0.4 MPa.
The application also discloses a water feeding system for exhaust-heat boiler includes:
the low-pressure water supply module is connected with a low-pressure steam drum in the waste heat boiler and is used for washing the low-pressure steam drum with water;
the medium-pressure water supply module is connected with a medium-pressure steam drum in the waste heat boiler and is used for washing the medium-pressure steam drum with water;
the high-pressure water supply module is connected with a high-pressure steam drum in the waste heat boiler and is used for washing the high-pressure steam drum with water;
and the water feeding module is used for respectively conveying the condensed water in the condenser to the high-pressure water feeding module, the medium-pressure water feeding module and the low-pressure water feeding module.
The water feeding system applied to the waste heat boiler comprises a condensate pump for respectively conveying condensate in a condenser to a high-pressure water feeding module, a medium-pressure water feeding module and a low-pressure water feeding module, and a condensate-to-high-pressure water feeding pump inlet regulating valve is further arranged between the condensate pump and the high-pressure water feeding module.
Compared with the prior art, the method has the following advantages: this application is through starting condensate pump, opens condensate water to high-pressure feed pump entry governing valve, and the water washing is gone up to high, well, low pressure steam pocket simultaneously, can shorten the water feeding time greatly and power consumption. Compared with the first water feeding method before optimization, the consumed time is unchanged, and the power consumption is reduced by 1004 KW.h; compared with the second watering method before optimization, the time consumption is reduced by 7.5 hours, and the power consumption is reduced by 52 KW.h.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of water feeding of a waste heat boiler according to an embodiment of the application.
FIG. 2 is a flow chart of the steps of a water feeding method according to an embodiment of the present application.
[ detailed description ] embodiments
In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1 to 2, an embodiment of the present application provides a water supply method applied to a waste heat boiler, including:
a high-pressure water supply module is arranged on the high-pressure steam drum 2 in the waste heat boiler;
a medium-pressure water supply module is arranged on a medium-pressure steam drum 3 in the waste heat boiler;
a low-pressure water supply module is arranged on the low-pressure steam drum 4 in the waste heat boiler; and
a condensate pump 5 for respectively conveying the condensate in the condenser 1 to the high-pressure water supply module, the medium-pressure water supply module and the low-pressure water supply module is arranged;
the condensed water is communicated between the condensed water pump 5 and the high-pressure water supply module to a high-pressure water supply pump inlet adjusting valve 6, and the water supply method comprises the following steps:
s1, starting the condensate pump 5, opening a condensate-to-high pressure feed pump inlet regulating valve 6, and respectively conveying the condensate in the condenser 1 to the high pressure feed water module, the medium pressure feed water module and the low pressure feed water module;
s2, starting the low-pressure water supply module, and washing the low-pressure steam drum 4 with water;
s3, starting the medium-pressure water supply module, and washing the medium-pressure steam drum 3 with water;
and S4, starting the high-pressure water supply module, and washing the high-pressure steam pocket 2 with water.
Further, in step S1, the condensate pump 5 is started by frequency conversion, and the frequency of the condensate pump 5 is maintained at 26HZ to 40HZ and the outlet pressure of the condensate pump is maintained at 1.2MPa to 1.8 MPa. In this embodiment, the frequency of 26HZ (the lowest safe frequency) is maintained, the pressure at the outlet of the condensate pump is about 1.2Mpa, and two 6KV variable-frequency speed-regulation condensate pumps 5 are equipped according to the actual needs, one is operated, and the other is standby, so as to prevent the variable-frequency speed-regulation condensate pump 5 from being suddenly damaged to influence the water feeding operation, and the rated power of the pump is 800 KW.
In step S1, the condensate-to-high pressure feed pump inlet regulating valve 6 is a condensate-to-high pressure feed pump inlet regulating valve, and the condensate-to-high pressure feed pump inlet regulating valve is opened to 100% opening. The condensed water in the condenser 1 can be conveyed to the high-pressure feed pump. In the present embodiment, the first and second electrodes are,
in step S2, the low-pressure water supply module is the low-pressure water supply regulating valve 41, and the low-pressure water supply regulating valve 41 is opened to flush the low-pressure steam drum 4.
In step S3, the medium-pressure water supply module includes a medium-pressure water supply pump 31 and a medium-pressure water supply regulating valve 32 connected thereto, the medium-pressure water supply regulating valve 32 is disposed at the top of the waste heat boiler, and the medium-pressure water supply pump inlet manual door, the outlet electric door and the medium-pressure water supply regulating valve 32 are opened to supply water to the medium-pressure steam drum 3. After the inlet manual door, the outlet electric door and the medium-pressure water supply regulating valve 32 of the medium-pressure water supply pump are opened, the outlet pressure of the medium-pressure water supply pump 31 is maintained to be 0.3-0.4 MPa. In this embodiment, the outlet pressure of the medium-pressure water-feeding pump 31 is maintained at about 0.35MPa, and two 6KV constant-speed medium-pressure water-feeding pumps 31 are provided according to the actual requirement, one is operated and the other is standby, so as to prevent the medium-pressure water-feeding pump 31 from being suddenly damaged to influence the water feeding, and the rated power of the pump is 280 KW.
In step S4, the high-pressure water supply module includes high-pressure water supply pump 21 and the high-pressure water supply regulating valve 22 who is connected with it, high-pressure water supply regulating valve 22 sets up in the exhaust-heat boiler top, opens high-pressure water supply pump entry hand door, export electrically operated gate, high-pressure water supply regulating valve 22, carries out the water-feeding to high-pressure steam pocket 2 and washes. After the inlet manual door, the outlet electric door and the high-pressure water supply regulating valve 22 of the high-pressure water supply pump are opened, the outlet pressure of the high-pressure water supply pump 21 is maintained to be 0.3-0.4 MPa. In the embodiment, the outlet pressure of the high-pressure water feeding pump 21 is maintained to be about 0.35MPa, two 6KV variable-frequency speed-regulating high-pressure water feeding pumps 21 are arranged according to the actual requirements, one pump runs and the other pump is standby, the high-pressure water feeding pump 21 is prevented from being suddenly damaged to influence the water feeding operation, and the rated power of the high-pressure water feeding pump is 2500 KW.
For better understanding the technical scheme of this embodiment, this embodiment has still disclosed a water feeding system who is applied to exhaust-heat boiler, includes:
the low-pressure water supply module is connected with the low-pressure steam drum 4 in the waste heat boiler and is used for washing the low-pressure steam drum 4 with water;
the medium-pressure water supply module is connected with a medium-pressure steam drum 3 in the waste heat boiler and is used for washing the medium-pressure steam drum 3 with water;
the high-pressure water supply module is connected with the high-pressure steam drum 2 in the waste heat boiler and is used for washing the high-pressure steam drum 2 with water;
and the water feeding module is used for respectively conveying the condensed water in the condenser 1 to the high-pressure water feeding module, the medium-pressure water feeding module and the low-pressure water feeding module.
The water feeding module comprises a condensate pump 5 which is used for conveying condensate in the condenser 1 to the high-pressure water feeding module, the medium-pressure water feeding module and the low-pressure water feeding module respectively, and a condensate pump inlet adjusting valve 6 for adjusting the condensate to the high-pressure water feeding pump is further arranged between the condensate pump 5 and the high-pressure water feeding module.
To better understand the technical solution of the present embodiment, the working principle is as follows:
in the embodiment, the condensate pump 5 is started in a frequency conversion mode, the frequency is maintained at 26HZ (the lowest safe frequency), the outlet pressure of the condensate pump 5 is about 1.2MPa, and meanwhile, the low, medium and high pressure steam drums are flushed with water, the water feeding time is only 1.5 hours, and the power consumption is 300 KW.h. Opening the low-pressure water supply regulating valve 41, and flushing the low-pressure steam pocket 4 with water; opening the condensed water until the opening degree of an inlet regulating valve of the high-pressure water feed pump is 100%, opening an inlet manual door, an outlet electric door and a high-pressure water feed regulating door of the high-pressure water feed pump, maintaining the outlet pressure of the high-pressure water feed pump 21 to be about 0.35MPa, and flushing the high-pressure steam drum 2 with water; and opening a manual inlet door, an electric outlet door and a medium-pressure water supply adjusting door of the medium-pressure water supply pump, maintaining the outlet pressure of the medium-pressure water supply pump 31 to be about 0.35MPa, and flushing the medium-pressure steam drum 3 with water. Compared with the first water feeding method before optimization, the consumed time is unchanged, and the power consumption is reduced by 1004 KW.h; compared with the second watering method before optimization, the time consumption is reduced by 7.5 hours, and the power consumption is reduced by 52 KW.h.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.
Claims (10)
1. A water feeding method applied to a waste heat boiler is characterized by comprising the following steps:
a high-pressure water supply module is arranged on the high-pressure steam drum (2) in the waste heat boiler;
a medium-pressure water supply module is arranged on a medium-pressure steam drum (3) in the waste heat boiler;
a low-pressure water supply module is arranged on a low-pressure steam drum (4) in the waste heat boiler; and
the condenser is provided with a condensate pump (5) which is used for respectively conveying condensate in the condenser (1) to the high-pressure water supply module, the medium-pressure water supply module and the low-pressure water supply module;
the condensed water inlet adjusting valve (6) is communicated between the condensed water pump (5) and the high-pressure water supply module, and the water supply method comprises the following steps:
s1, starting a condensate pump (5), opening a condensate-to-high pressure feed pump inlet regulating valve (6), and respectively conveying the condensate in the condenser (1) to a high pressure feed water module, a medium pressure feed water module and a low pressure feed water module;
s2, starting a low-pressure water supply module, and washing the low-pressure steam pocket (4) with water;
s3, starting the medium-pressure water supply module, and washing the medium-pressure steam drum (3) with water;
and S4, starting the high-pressure water supply module, and washing the high-pressure steam pocket (2) with water.
2. The method for supplying water to the waste heat boiler according to the claim 1, characterized in that in step S1, the condensed water pump (5) is started by frequency conversion, the frequency of the condensed water pump (5) is maintained at 26-40HZ, and the outlet pressure of the condensed water pump is maintained at 1.2-1.8 MPa.
3. The method for supplying water to the waste heat boiler as recited in claim 1, wherein in step S1, the condensate-to-high-pressure feed-water pump inlet regulating valve (6) is a condensate-to-high-pressure feed-water pump inlet regulating valve, and the condensate-to-high-pressure feed-water pump inlet regulating valve is opened to 100% opening.
4. The water feeding method applied to the waste heat boiler is characterized in that in the step S2, the low-pressure water feeding module is a low-pressure water feeding adjusting valve (41), the low-pressure water feeding adjusting valve (41) is opened, and the low-pressure steam drum (4) is flushed with water.
5. The water feeding method applied to the waste heat boiler is characterized in that in step S3, the medium-pressure water feeding module comprises a medium-pressure water feeding pump (31) and a medium-pressure water feeding adjusting valve (32) connected with the medium-pressure water feeding pump, and the medium-pressure water feeding pump inlet manual door, the medium-pressure water feeding pump outlet electric door and the medium-pressure water feeding adjusting valve (32) are opened to perform water feeding washing on the medium-pressure steam pocket (3).
6. The water feeding method applied to the waste heat boiler is characterized in that in step S4, the high-pressure water feeding module comprises a high-pressure water feeding pump (21) and a high-pressure water feeding adjusting valve (22) connected with the high-pressure water feeding pump, and the high-pressure water feeding pump inlet manual door, the high-pressure water feeding pump outlet electric door and the high-pressure water feeding adjusting valve (22) are opened to perform water feeding washing on the high-pressure steam pocket (2).
7. The water feeding method applied to the waste heat boiler is characterized in that after the inlet manual door, the outlet electric door and the medium pressure water feeding adjusting valve (32) of the medium pressure water feeding pump are opened, the outlet pressure of the medium pressure water feeding pump (31) is maintained to be 0.3-0.4 MPa.
8. The water feeding method applied to the waste heat boiler is characterized in that after the inlet manual door, the outlet electric door and the high-pressure water feeding adjusting valve (22) of the high-pressure water feeding pump are opened, the outlet pressure of the high-pressure water feeding pump (21) is maintained to be 0.3-0.4 MPa.
9. A water feeding system applied to a waste heat boiler is characterized by comprising:
the low-pressure water supply module is connected with a low-pressure steam drum (4) in the waste heat boiler and is used for washing the low-pressure steam drum (4) with water;
the medium-pressure water supply module is connected with a medium-pressure steam drum (3) in the waste heat boiler and is used for washing the medium-pressure steam drum (3) by water;
the high-pressure water supply module is connected with the high-pressure steam drum (2) in the waste heat boiler and is used for washing the high-pressure steam drum (2) with water;
and the water feeding module is used for respectively conveying the condensed water in the condenser (1) to the high-pressure water feeding module, the medium-pressure water feeding module and the low-pressure water feeding module.
10. The water supply system applied to the waste heat boiler is characterized in that the water supply module comprises a condensate pump (5) for respectively conveying condensate in the condenser (1) to the high-pressure water supply module, the medium-pressure water supply module and the low-pressure water supply module, and a condensate-to-high-pressure water supply pump inlet adjusting valve (6) is further arranged between the condensate pump (5) and the high-pressure water supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111295196.8A CN114135858A (en) | 2021-11-03 | 2021-11-03 | Water feeding method and system applied to waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111295196.8A CN114135858A (en) | 2021-11-03 | 2021-11-03 | Water feeding method and system applied to waste heat boiler |
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| CN114135858A true CN114135858A (en) | 2022-03-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0842803A (en) * | 1994-05-23 | 1996-02-16 | Toshiba Eng Co Ltd | Water feeding device for double pressure type exhaust heat recovery boiler |
| CN102353037A (en) * | 2011-08-30 | 2012-02-15 | 上海申能临港燃机发电有限公司 | Water supply system of combined cycle generating unit |
| CN106338060A (en) * | 2016-08-08 | 2017-01-18 | 东方菱日锅炉有限公司 | Water supply system for combined cycle heat recovery boiler |
| CN209978018U (en) * | 2019-03-12 | 2020-01-21 | 东方菱日锅炉有限公司 | Water feeding pump pipeline of three-pressure waste heat boiler |
| US20210025292A1 (en) * | 2019-07-22 | 2021-01-28 | Joel Melvin Levin | Steam turbine power plant utilizing industrial heat pumps to preheat boiler feed-water |
-
2021
- 2021-11-03 CN CN202111295196.8A patent/CN114135858A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0842803A (en) * | 1994-05-23 | 1996-02-16 | Toshiba Eng Co Ltd | Water feeding device for double pressure type exhaust heat recovery boiler |
| CN102353037A (en) * | 2011-08-30 | 2012-02-15 | 上海申能临港燃机发电有限公司 | Water supply system of combined cycle generating unit |
| CN106338060A (en) * | 2016-08-08 | 2017-01-18 | 东方菱日锅炉有限公司 | Water supply system for combined cycle heat recovery boiler |
| CN209978018U (en) * | 2019-03-12 | 2020-01-21 | 东方菱日锅炉有限公司 | Water feeding pump pipeline of three-pressure waste heat boiler |
| US20210025292A1 (en) * | 2019-07-22 | 2021-01-28 | Joel Melvin Levin | Steam turbine power plant utilizing industrial heat pumps to preheat boiler feed-water |
Non-Patent Citations (1)
| Title |
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| 何畅等: "《9F级燃机余热锅炉高中压合用电动给水泵的创新应用》", 电力建设, vol. 30, no. 2, pages 48 - 51 * |
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