WO2023200314A1

WO2023200314A1 - Fuel supply system

Info

Publication number: WO2023200314A1
Application number: PCT/KR2023/005138
Authority: WO
Inventors: 김규종; 조승환; 서원준; 이상진; 김범종; 김동원; 박경일
Original assignee: 현대중공업파워시스템 주식회사
Priority date: 2022-04-14
Filing date: 2023-04-14
Publication date: 2023-10-19

Abstract

A fuel supply system according to the present invention vaporizes mixed fuel supplied to a power generation system. The fuel supply system comprises: a condenser for condensing steam conveyed from a turbine of the power generation system; a storage tank in which the mixed fuel is liquefied and stored; a vaporizer for vaporizing the mixed fuel conveyed from the storage tank; and a first line passing through the condenser and the vaporizer. Heat exchange water is conveyed through the first line, the heat exchange water is heated in the condenser, the vaporizer vaporizes the mixed fuel using the heat exchange water heated in the condenser, and the mixed fuel vaporized in the vaporizer is supplied to the power generation system.

Description

fuel supply system

The present invention relates to a fuel supply system that supplies co-fired fuel to a power generation system.

As the global warming phenomenon intensifies, there are efforts to reduce greenhouse gas emissions around the world. In particular, as the 1997 Kyoto Protocol, which obliges developed countries to reduce greenhouse gases, expires in 2020, the 21st Conference held in Paris, France in December 2015 The 195 parties participating in the Paris Climate Change Accord, which was adopted by the United Nations Framework Convention on Climate Change and came into effect in November 2016, are making various efforts with the goal of reducing greenhouse gases.

In the case of thermal power generation systems, fossil fuels are mainly used as fuel for boilers. When fossil fuels used in boilers are burned, not only fine dust, SOx and NOx but also greenhouse gases are emitted. Recently, technology has been developed to reduce greenhouse gas emissions by burning fossil fuels with gases such as ammonia.

A fuel supply system according to the present invention is a fuel supply system that vaporizes co-fired fuel supplied to a power generation system, comprising: a condenser that condenses steam transferred from a turbine of the power generation system; a storage tank in which the co-fired fuel is liquefied and stored; a vaporizer that vaporizes the co-fired fuel transferred from the storage tank; and a first line passing through the condenser and the vaporizer, wherein heat exchange water is transferred through the first line, the heat exchange water is heated in the condenser, and the vaporizer is supplied with the heat exchange water heated in the condenser. The co-combustion fuel is vaporized, and the co-combustion fuel vaporized in the vaporizer is supplied to the power generation system.

Or, according to claim 1, comprising a second line and a third line connected to the storage tank, wherein the second line transfers the co-burning fuel in a liquid state to the vaporizer, and the third line stores the co-burning fuel. The co-combustion fuel evaporated in the tank is transferred, and the co-combustion fuel vaporized in the vaporizer and the co-combustion fuel transferred through the third line are supplied to the power generation system.

Or, a fourth line transferring the co-combustion fuel vaporized in the carburetor; and a first heater disposed between the carburetor and the boiler of the power generation system, wherein the first line includes a first branch line, and the first branch line is disposed behind the condenser and in the condenser. At least a portion of the heated heat exchange water is transferred to the first heater, and the first heater heats the co-fired fuel transferred through the fourth line.

Alternatively, it includes a second heater disposed behind the first heater.

Alternatively, the third line passes through a third heater, and the co-fired fuel transported through the third line is heated by the third heater.

Alternatively, the third line transfers the co-combustion fuel evaporated in the storage tank to the vaporizer.

Or, a fourth line for transferring the co-combustion fuel vaporized in the vaporizer to the first accumulator, wherein the third line is connected to the fourth line to transfer the co-combustion fuel evaporated in the storage tank to the fourth accumulator. transfer to the line.

According to the embodiment of the present invention having this configuration, there is an effect of saving energy because seawater is used for co-firing fuel heating. In addition, since the co-fired fuel evaporated in the storage tank is used as fuel for the boiler, there is an effect of saving co-fired fuel.

1 is a conceptual diagram of a conventional power generation system using co-fired fuel.

Figure 2 is a conceptual diagram showing a power generation system according to the present invention.

Figure 3 is a conceptual diagram showing a power generation system according to the first embodiment of the present invention.

Figure 4 is a conceptual diagram showing a power generation system according to a second embodiment of the present invention.

Figure 5 is a conceptual diagram showing a power generation system according to a third embodiment of the present invention.

Figure 6 is a conceptual diagram showing a power generation system according to a fourth embodiment of the present invention.

Figure 7 is a conceptual diagram showing a power generation system according to the fifth embodiment of the present invention.

Figure 8 is a conceptual diagram showing a power generation system according to a sixth embodiment of the present invention.

Figure 9 is a conceptual diagram showing a power generation system according to the seventh embodiment of the present invention.

Figure 10 is a conceptual diagram showing a power generation system according to the eighth embodiment of the present invention.

Figure 11 is a conceptual diagram showing a power generation system according to the ninth embodiment of the present invention.

Figure 12 is a conceptual diagram showing a power generation system according to the tenth embodiment of the present invention.

Figure 13 is a graph showing the year-round seawater temperature distribution in Samcheok, Korea.

Figure 14 is a conceptual diagram showing a power generation system according to the 11th embodiment of the present invention.

Figure 15 is a conceptual diagram showing a power generation system according to the twelfth embodiment of the present invention.

Figure 16 is a conceptual diagram showing a power generation system according to the 13th embodiment of the present invention.

Figure 17 is a conceptual diagram showing a power generation system according to the 14th embodiment of the present invention.

Figure 18 is a conceptual diagram showing a power generation system according to the 15th embodiment of the present invention.

Prior to the detailed description of the present invention, terms or words used in the specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should use terminology to explain his/her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent the entire technical idea of the present invention, and therefore, various equivalents that can replace them at the time of filing the present application may be used. It should be understood that there may be variations and examples.

In the following description, singular expressions include plural expressions unless the context clearly dictates otherwise. Terms such as "comprise" or "comprise" are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and one or more other features or numbers, It should be understood that this does not exclude in advance the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof.

In addition, in the following description, expressions such as upper, upper, lower, bottom, side, front, rear, etc. are expressed based on the direction shown in the drawing, and it should be noted in advance that if the direction of the object is changed, it may be expressed differently. .

Additionally, in this specification and claims, terms including ordinal numbers such as “first”, “second”, etc. may be used to distinguish between components. These ordinal numbers are used to distinguish identical or similar components from each other, and the meaning of the term should not be interpreted limitedly due to the use of these ordinal numbers. For example, components combined with these ordinal numbers should not be interpreted as having a limited order of use or arrangement based on the number. If necessary, each ordinal number may be used interchangeably.

Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. However, the idea of the present invention is not limited to the presented embodiments. For example, a person skilled in the art who understands the spirit of the present invention may suggest other embodiments that are included within the scope of the spirit of the present invention through addition, change, or deletion of components, but this is also within the scope of the present invention. It would be said to be included within the scope of thought. The shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

The power generation system according to the present invention may include a boiler 30, a turbine, a condenser 40, and a fuel supply system. Each individual component may be connected by a plurality of pipes, each pipe may also be connected to each other, and a branch pipe may be disposed in each pipe. Branch pipes may be connected to other pipes. When connecting a pipe to a pipe or connecting a pipe to each component, decompression or pressure adjustment may be necessary. Since the technology related to this is a known technology, detailed descriptions may be omitted below.

The boiler 30, turbine, and condenser 40 may be connected to a sixth line 6000. The fluid used for power generation can move to the boiler 30, turbine, and condenser 40 through the sixth line 6000. The meaning of the term line does not mean a single pipe, but can mean a movement path of fluid.

The boiler 30 can heat fluid by burning fuel. The fluid heated by the boiler 30 may be water. The boiler 30 can generate steam by burning fuel. In this case, the vapor may be water vapor. The boiler 30 can burn fossil fuel. The boiler 30 can burn co-fired fuel that is a mixture of two or more types of fuel. In this case, the fossil fuel input into the boiler 30 may be fossil fuel used in conventional technology, such as coal or oil. The blended fuel mixed with fossil fuels may be ammonia or hydrogen. That is, the boiler 30 can burn ammonia or hydrogen, excluding some of the conventional fossil fuels. Since a portion of the fossil fuel burned in the boiler 30 is excluded, carbon dioxide generated by combustion can be reduced compared to the case where only fossil fuel is burned.

Steam generated in the boiler 30 may be transferred to the turbine along the sixth line 6000. The turbine may be a steam turbine. The turbine can rotate the blades using steam transported through the sixth line 6000. The generator can produce electricity by rotating the blades.

Steam transferred to the turbine may be transferred to the condenser 40 through the sixth line 6000. The condenser 40 can condense the fluid from vapor to liquid. The condenser 40 may include a low-temperature heat source. The energy of the steam can move to the low-temperature heat source of the condenser 40. The latent heat of the steam can move to the low-temperature heat source of the condenser 40. The low-temperature heat source of the condenser 40 may be a fluid flowing through a pipe. The low-temperature heat source of the condenser 40 may be heat exchange water flowing through pipes. The low-temperature heat source of the condenser 40 may be heat exchange water flowing through the first line 1000. The heat exchange water flowing through the first line 1000 may be seawater.

The fluid condensed in the condenser 40 may be pressurized through a pump and transferred back to the boiler 30. The fluid transferred to the boiler 30 circulates through the sixth line 6000 and can be used to produce electricity.

The fuel supply system includes a storage tank 10, a vaporizer 20, a first accumulator, a first line 1000, a second line 2000, a third line 3000, a fourth line 4000, and a fifth line. It may include (5000).

The storage tank 10 can store co-burned fuel. The storage tank 10 can store liquefied co-fired fuel. Co-fired fuel may be burned in the boiler 30. Co-fired fuel may be burned in the boiler 30 together with fossil fuel. The co-fired fuel may be ammonia, for example.

The storage tank 10 may be connected to the second line 2000. The second line 2000 can transport the liquid co-combustion fuel stored in the storage tank 10. The second line 2000 may be connected to the vaporizer 20. The second line 2000 can transfer the co-combustion fuel stored in the storage tank 10 to the vaporizer 20 in a liquid state.

The storage tank 10 may be connected to the third line 3000. The third line 3000 may be disposed at the top of the storage tank 10. The third line 3000 can transfer the co-combustion fuel stored in the storage tank 10 in a gaseous state. The third line 3000 can transport co-combustion fuel evaporated within the storage tank 10. The third line 3000 may be connected to the first accumulator. The third line 3000 may transfer the co-combustion fuel evaporated in the storage tank 10 from the storage tank 10 to the first accumulator.

The first line 1000 can transport heat exchange water. The heat exchange water may be seawater. The first line 1000 may be connected to the condenser 40 and the vaporizer 20. Heat exchange water transported through the first line 1000 may pass through the condenser 40 and the vaporizer 20. Heat exchange water transported through the first line 1000 may sequentially pass through the condenser 40 and the vaporizer 20.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat generated from steam condensed in the condenser 40 after passing through the turbine. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000. The heat exchange water may emit heat in the vaporizer 20. The heat emitted by the heat exchange water from the vaporizer 20 may be heat transferred from the condenser 40.

The vaporizer 20 can vaporize co-fired fuel. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water flowing in the first line 1000 as a high-temperature heat source. The first line 1000 may pass through the vaporizer 20. The vaporizer 20 may be connected to the second line 2000. The second line 2000 can transfer the co-combustion fuel stored in the storage tank 10 to the carburetor 20. The co-combustion fuel transported through the second line 2000 may be vaporized in the vaporizer 20. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water heated in the condenser 40 as a high-temperature heat source. The co-combustion fuel vaporized in the carburetor 20 may be transferred to the first accumulator through the fourth line 4000.

The first accumulator can transfer the received vapor-state co-fired fuel to the boiler. Since the technology related to the first accumulator is a known technology, description of the structure and operating principle of the first accumulator can be omitted. The first accumulator may be connected to the third line 3000. The co-combustion fuel evaporated in the storage tank 10 may be transferred to the first accumulator through the third line 3000. The first accumulator may be connected to the fourth line 4000. The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The first accumulator may be connected to the fifth line 5000. The fifth line 5000 can transfer gaseous co-fired fuel from the first accumulator to the boiler 30.

In the case of the above power generation system, heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20, which has the effect of saving energy used in the vaporizer 20. In addition, since the co-fired fuel evaporated in the storage tank 10 is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 3 is a conceptual diagram showing a power generation system according to the first embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a storage tank 10, a vaporizer 20, a first accumulator, a first line 1000, a second line 2000, a third line 3000, a fourth line 4000, and a fifth line. (5000), it may include a first heater 210, a second heater 220, and a third heater 230.

The storage tank 10 may be connected to the second line 2000. The second line 2000 can transport the liquid co-combustion fuel stored in the storage tank 10. The second line 2000 may be connected to the vaporizer 20. The second line 2000 can transfer the liquid co-combustion fuel stored in the storage tank 10 to the vaporizer 20.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat generated from steam that passes through the turbine and is condensed in the condenser 40. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000. The heat exchange water may emit heat in the vaporizer 20. The heat emitted by the heat exchange water from the vaporizer 20 may be heat transferred from the condenser 40.

The first line 1000 may include a first branch line 1100. Among the first lines 1000, the side through which the heat exchange water flows into the condenser 40 is referred to as the front of the condenser 40, and the side through which the heat exchange water flows out of the condenser 40 is referred to as the rear of the condenser 40. The first branch line 1100 may be placed behind the condenser 40. The first branch line 1100 may be connected to the first line 1000 at the rear of the condenser 40. The first branch line 1100 may be connected to the first line 1000 between the condenser 40 and the vaporizer 20. The first branch line 1100 may pass through the first heater 210. Heat exchange water may pass through the first heater 210 through the first branch line 1100. At least a portion of the heat exchange water heated in the condenser 40 may pass through the first heater 210 through the first branch line 1100. Heat exchange water heated in the condenser 40 may emit heat in the first heater 210. The heat exchange water heated in the condenser 40 can heat the co-fired fuel in the first heater 210.

The first heater 210 may be disposed between the vaporizer 20 and the first accumulator. The first heater 210 may heat the co-combustion fuel vaporized in the vaporizer 20. The high-temperature heat source of the first heater 210 may be heat exchange water heated in the condenser 40. Heat exchange water passing through the first heater 210 through the first branch line 1100 may be a high-temperature heat source of the first heater 210.

The second heater 220 may be disposed between the first heater 210 and the first accumulator. The second heater 220 may reheat the co-combustion fuel heated in the first heater 210. The high temperature heat source of the second heater 220 may be an independent heat source. The high-temperature heat source of the second heater 220 may be, for example, a heating element that uses electrical energy, or, as other examples, may be hot water or steam.

The third heater 230 may heat the co-combustion fuel evaporated in the storage tank 10. The third heater 230 may heat the co-fired fuel transferred to the first accumulator through the second line 2000. The high-temperature heat source of the third heater 230 may be an independent heat source. The high-temperature heat source of the third heater 230 may be, for example, a heating element that uses electrical energy, or, as other examples, may be hot water or steam.

The fourth line 4000 can transfer the co-combustion fuel evaporated in the carburetor 20 to the first accumulator. The fourth line 4000 may connect the vaporizer 20 and the first accumulator. The fourth line 4000 may pass through the first heater 210 and the second heater 220 disposed between the vaporizer 20 and the first accumulator.

The first accumulator may be connected to the third line 3000. The co-combustion fuel evaporated in the storage tank 10 may be transferred to the first accumulator through the third line 3000. The first accumulator may be connected to the fourth line 4000. The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The first accumulator may be connected to the fifth line 5000. The fifth line 5000 can transfer gaseous co-fired fuel from the first accumulator to the boiler 30.

In the case of the above power generation system, the heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20 and the first heater 210, so it is used in the vaporizer 20 and the first heater 210. It has the effect of saving energy. When seawater is used as heat exchange water, seawater that absorbs heat in the condenser 40 releases heat from the vaporizer 20 and the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . In addition, since the co-fired fuel evaporated in the storage tank 10 is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 4 is a conceptual diagram showing a power generation system according to a second embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a storage tank 10, a vaporizer 20, a first accumulator, a first line 1000, a second line 2000, a third line 3000, a fourth line 4000, and a fifth line. (5000), and may include a first heater 210 and a second heater 220.

The storage tank 10 may be connected to the third line 3000. The third line 3000 may be disposed at the top of the storage tank 10. The third line 3000 can transfer the co-combustion fuel stored in the storage tank 10 in a gaseous state. The third line 3000 can transport co-combustion fuel evaporated within the storage tank 10. One end of the third line 3000 may be connected to the storage tank 10 and the other end of the third line 3000 may be connected to the vaporizer 20. The third line 3000 may transfer the co-combustion fuel evaporated in the storage tank 10 from the storage tank 10 to the vaporizer 20. The co-combustion fuel transferred to the carburetor 20 through the second line 2000 and the third line 3000 may be heated in the carburetor 20. In this case, the high-temperature heat source that heats the co-fired fuel transferred to the vaporizer 20 through the third line 3000 may be heat exchange water heated in the condenser 40.

The first accumulator may be connected to the fourth line 4000. The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The first accumulator may be connected to the fifth line 5000. The fifth line 5000 can transfer gaseous co-fired fuel from the first accumulator to the boiler 30.

Figure 5 is a conceptual diagram showing a power generation system according to a third embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The storage tank 10 may be connected to the second line 2000. The second line 2000 can transfer the co-combustion fuel stored in the storage tank 10 in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 can transfer the co-combustion fuel stored in the storage tank 10 to the vaporizer 20 in a liquid state.

The storage tank 10 may be connected to the third line 3000. The third line 3000 may be disposed at the top of the storage tank 10. The third line 3000 can transfer the co-combustion fuel stored in the storage tank 10 in a gaseous state. The third line 3000 can transport co-combustion fuel evaporated within the storage tank 10. The third line 3000 may be connected to the fourth line 4000. The third line 3000 may transfer the co-fired fuel evaporated in the storage tank 10 from the storage tank 10 to the fourth line 4000. The co-combustion fuel transferred to the fourth line 4000 through the third line 3000 may be mixed with the co-combustion fuel vaporized in the carburetor 20.

The fourth line 4000 can transfer the co-combustion fuel evaporated in the carburetor 20 to the first accumulator. The fourth line 4000 can transfer the co-burning fuel transferred through the third line 3000 to the first accumulator. The fourth line 4000 may connect the vaporizer 20 and the first accumulator. The fourth line 4000 may pass through the first heater 210 and the second heater 220 disposed between the vaporizer 20 and the first accumulator.

In the case of the above power generation system, the heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20 and the first heater 210, so the energy used in the vaporizer 20 is reduced. there is. When seawater is used as heat exchange water, seawater that absorbs heat in the condenser 40 releases heat from the vaporizer 20 and the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . In addition, since the co-fired fuel evaporated in the storage tank 10 is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 6 is a conceptual diagram showing a power generation system according to a fourth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a low pressure storage tank 100 (or storage tank), a first pump 110, a first compressor 120, a carburetor 20, a first accumulator, a first line 1000, and a second line ( 2000), a third line 3000, a fourth line 4000, a fifth line 5000, a first heater 210, a second heater 220, and a third heater 230.

The low-pressure storage tank 100 (or storage tank) can store co-fired fuel. The low-pressure storage tank 100 (or storage tank) can store liquefied co-combustion fuel. Co-fired fuel may be burned in the boiler 30. Co-fired fuel may be burned in the boiler 30 together with fossil fuel. The co-fired fuel may be ammonia, for example.

The low-pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110 and then to the vaporizer 20. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the vaporizer 20 in a liquid state.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 may transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The third line 3000 may be connected to the first accumulator. The third line 3000 may transfer the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank) from the storage tank 10 to the first compressor 120 and then to the first accumulator.

The first pump 110 may pressurize the liquid co-combustion fuel transferred from the low-pressure storage tank 100 (or storage tank). The first pump 110 may be placed on the second line 2000. The liquid co-combustion fuel pressurized by the first pump 110 may be transferred to the vaporizer 20 through the second line 2000.

The first compressor 120 may compress the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank). The first compressor 120 may be placed on the third line 3000. The co-combusted fuel compressed by the first compressor 120 may be transferred to the first accumulator.

The vaporizer 20 can vaporize co-fired fuel. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water flowing in the first line 1000 as a high-temperature heat source. The first line 1000 may pass through the vaporizer 20. The vaporizer 20 may be connected to the second line 2000. The second line 2000 may transfer co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the vaporizer 20. The co-combustion fuel transported through the second line 2000 may be vaporized in the vaporizer 20. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water heated in the condenser 40 as a high-temperature heat source. The co-combustion fuel vaporized in the carburetor 20 may be transferred to the first accumulator through the fourth line 4000.

The second heater 220 may be disposed between the first heater 210 and the first accumulator. The second heater 220 may reheat the co-combustion fuel heated in the first heater 210. The high temperature heat source of the second heater 220 may be an independent heat source. One example of the high temperature of the second heater 220 may be a heating element using electrical energy, and another example may be hot water or steam.

The third heater 230 may heat the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank). The third heater 230 may heat the co-fired fuel transferred to the first accumulator through the second line 2000. The high-temperature heat source of the third heater 230 may be an independent heat source. The high-temperature heat source of the third heater 230 may be, for example, a heating element that uses electrical energy, or, as other examples, may be hot water or steam.

In the case of the above power generation system, the heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20 and the first heater 210, so the energy used in the vaporizer 20 is reduced. there is. When seawater is used as heat exchange water, seawater that absorbs heat in the condenser 40 releases heat from the vaporizer 20 and the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . In addition, since the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 7 is a conceptual diagram showing a power generation system according to the fifth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The low pressure low pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110 and then to the vaporizer 20. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the vaporizer 20 in a liquid state.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 can transfer the co-combustion fuel stored in the storage tank 10 in a gaseous state. The third line 3000 can transport co-combustion fuel evaporated within the storage tank 10. One end of the third line 3000 may be connected to the storage tank 10 and the other end of the third line 3000 may be connected to the vaporizer 20. The third line 3000 transfers the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank) from the low-pressure storage tank 100 (or storage tank) to the first compressor 120 and then to the vaporizer 20. It can be transferred to . The co-combustion fuel transferred to the carburetor 20 through the third line 3000 may be heated in the carburetor 20. In this case, the heat source for heating the co-fired fuel transferred to the vaporizer 20 through the third line 3000 may be heat exchange water heated in the condenser 40.

The first compressor 120 may compress the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank). The first compressor 120 may be placed on the third line 3000. The co-combusted fuel compressed by the first compressor 120 may be transferred to the vaporizer.

The first line 1000 may include a first branch line 1100. Among the first lines 1000, the side through which heat exchange water flows into the condenser 40 is referred to as the front of the condenser 40, and the side through which heat exchange water flows out of the condenser 40 is referred to as the rear of the condenser 40. The first branch line 1100 may be placed behind the condenser 40. The first branch line 1100 may be connected to the first line 1000 at the rear of the condenser 40. The first branch line 1100 may be connected to the first line 1000 between the condenser 40 and the vaporizer 20. The first branch line 1100 may pass through the first heater 210. Heat exchange water may pass through the first heater 210 through the first branch line 1100. At least a portion of the heat exchange water heated in the condenser 40 may pass through the first heater 210 through the first branch line 1100. Heat exchange water heated in the condenser 40 may emit heat in the first heater 210. The heat exchange water heated in the condenser 40 can heat the co-fired fuel in the first heater 210.

Figure 8 is a conceptual diagram showing a power generation system according to a sixth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a low pressure storage tank 100 (or storage tank), a first pump 110, a first compressor 120, a carburetor 20, a first accumulator, a first line 1000, and a second line ( 2000), a third line 3000, a fourth line 4000, a fifth line 5000, a first heater 210, and a second heater 220.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 can transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The third line 3000 may be connected to the fourth line 4000. The third line 3000 may transfer the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) from the low-pressure storage tank 100 (or storage tank) to the fourth line 4000. The co-combustion fuel transferred to the fourth line 4000 through the third line 3000 may be mixed with the co-combustion fuel vaporized in the carburetor 20.

The first compressor 120 may compress the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank). The first compressor 120 may be placed on the third line 3000. The co-fired fuel compressed by the first compressor 120 may be transferred to the fourth line 4000.

Figure 9 is a conceptual diagram showing a power generation system according to the seventh embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a storage tank 10, a vaporizer 20, a first accumulator, a first line 1000, a second line 2000, a third line 3000, a fourth line 4000, and a fifth line. It may include (5000), a seventh line (7000), a first heater (210), a second heater (220), and a reformer (50).

The storage tank 10 may be connected to the second line 2000. The second line 2000 can transfer the co-combustion fuel stored in the storage tank 10 in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 can transfer the liquid co-combustion fuel stored in the storage tank 10 to the vaporizer 20.

Reformer 50 can produce hydrogen. The reformer 50 can generate hydrogen using ammonia. Since the technology related to the reformer 50 generating hydrogen using ammonia is a known technology, description of the related technology can be omitted.

The reformer 50 may be connected to the third line 3000. The third line 3000 can transfer the co-fired fuel evaporated in the storage tank 10 to the reformer 50. The reformer 50 can generate hydrogen using co-combustion fuel delivered through the third line 3000. In this case, the co-fired fuel may be ammonia.

The reformer 50 may be connected to the fourth branch line. The fourth branch line can transfer a portion of the co-fired fuel transferred through the fourth line 4000 to the reformer 50. The reformer 50 can generate hydrogen using co-combustion fuel delivered from the fourth branch line. In this case, the co-fired fuel may be ammonia.

Hydrogen generated in the reformer 50 may be transferred to the first accumulator through the seventh line 7000. Hydrogen generated in the reformer 50 may be transferred to the boiler 30 together with co-fired fuel in the first accumulator.

The fourth line 4000 can transfer the co-combustion fuel evaporated in the carburetor 20 to the first accumulator. The fourth line 4000 may connect the vaporizer 20 and the first accumulator. The fourth line 4000 may pass through the first heater 210 and the second heater 220 disposed between the vaporizer 20 and the first accumulator. The fourth line 4000 may include a fourth branch line 4100. The fourth branch line 4100 may connect the fourth line 4000 and the reformer 50. The fourth branch line 4100 may transfer a portion of the co-combustion fuel transferred through the fourth line 4000 to the reformer 50.

The first accumulator may be connected to the seventh line 7000. Hydrogen produced in the reformer 50 may be transferred to the first accumulator through the seventh line 7000. The first accumulator may be connected to the fourth line 4000. The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The first accumulator may be connected to the fifth line 5000. The fifth line 5000 can transfer gaseous co-fired fuel from the first accumulator to the boiler 30.

In the case of the above power generation system, the heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20, so the energy used in the vaporizer 20 and the first heater 210 is reduced. there is. When seawater is used as heat exchange water, seawater that absorbs heat in the condenser 40 releases heat from the vaporizer 20 and the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . In addition, since hydrogen is generated using co-combustion fuel and the generated hydrogen is used as fuel for the boiler 30, a more active combustion reaction can be used.

Figure 10 is a conceptual diagram showing a power generation system according to the eighth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a storage tank 10, a vaporizer 20, a first accumulator, a first line 1000, a second line 2000, a third line 3000, a fourth line 4000, and a fifth line. It may include (5000), a seventh line (7000), a first heater (210), a second heater (220), a reformer (50), and a second accumulator.

The reformer 50 may be connected to the fourth branch line 4100. The fourth branch line 4100 may transfer a portion of the co-combustion fuel transferred through the fourth line 4000 to the reformer 50. The reformer 50 can generate hydrogen using co-combustion fuel delivered from the fourth branch line 4100. In this case, the co-fired fuel may be ammonia.

Hydrogen generated in the reformer 50 may be transferred to the second accumulator through the seventh line 7000. Hydrogen generated in the reformer 50 may be transferred from the second accumulator to the boiler 30.

The fourth line 4000 can transfer the co-combustion fuel evaporated in the carburetor 20 to the first accumulator. The fourth line 4000 may connect the vaporizer 20 and the first accumulator. The fourth line 4000 may pass through the first heater 210 and the second heater 220 disposed between the vaporizer 20 and the first accumulator. The fourth line 4000 may include a fourth branch line. The fourth branch line may connect the fourth line 4000 and the reformer 50. The fourth branch line can transfer a portion of the co-fired fuel transferred through the fourth line 4000 to the reformer 50.

In the case of the above power generation system, the heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20 and the first heater 210, so the energy used in the vaporizer 20 is reduced. there is. When seawater is used as heat exchange water, seawater that absorbs heat in the condenser 40 releases heat from the vaporizer 20 and the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . In addition, since hydrogen is generated using co-combustion fuel and the generated hydrogen is used as fuel for the boiler 30, a more active combustion reaction can be used.

Figure 11 is a conceptual diagram showing a power generation system according to the ninth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a low pressure storage tank 100 (or storage tank), a first pump 110, a first compressor 120, a second pump 130, a carburetor 20, a first line 1000, and a first compressor 1000. 2nd line (2000), 3rd line (3000), 4th line (4000), 5th line (5000), 1st heater (210), 2nd heater (220), 8th line (8000), 2nd line It may include a compressor 140 and a first accumulator.

The low pressure low pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110 and then to the vaporizer 20. The second line 2000 may transfer the liquid co-combustion fuel transferred to the first pump 110 to the first heater 210. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110, the first heater 210, and the vaporizer 20.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 may transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The third line 3000 may be connected to the vaporizer 20. The third line 3000 may pass through the first compressor 120. The third line 3000 can transfer co-combustion fuel to the first compressor 120 and the vaporizer 20. The third line 3000 may transfer the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank) from the storage tank 10 to the first compressor 120 and then to the vaporizer 20.

The first compressor 120 may compress the co-combustion fuel evaporated in the low-pressure storage tank 100 (or storage tank). The first compressor 120 may be placed on the third line 3000. The co-combusted fuel compressed by the first compressor 120 may be transferred to the carburetor 20.

The first line 1000 may include a first branch line 1100. Among the first lines 1000, the side through which the heat exchange water flows into the condenser 40 is referred to as the front of the condenser 40, and the side through which the heat exchange water flows out of the condenser 40 is referred to as the rear of the condenser 40. The first branch line 1100 may be placed behind the condenser 40.

The first branch line 1100 may be connected to the first line 1000 at the rear of the condenser 40. The first branch line 1100 may be connected to the first line 1000 between the condenser 40 and the vaporizer 20. The first branch line 1100 may pass through the vaporizer 20. Heat exchange water may pass through the vaporizer 20 through the first branch line 1100. At least a portion of the heat exchange water heated in the condenser 40 may pass through the vaporizer 20 through the first branch line 1100. Heat exchange water heated in the condenser 40 may emit heat in the vaporizer 20. The heat exchange water heated in the condenser 40 can heat co-fired fuel in the vaporizer 20.

The first branch line 1100 may include a first branch bypass line 1200. The first branch bypass line 1200 may pass through the first heater 210. When the heat exchange water passes through the first branch bypass line 1200, the heat exchange water can be used as a high temperature heat source of the first heater 210. That is, the heat exchange water can emit heat to the first heater 210 through the first branch bypass line 1200. The co-fired fuel transported through the second line 2000 may be heated in the first heater 210.

The first branch line 1100 may include a 1-1 valve 1210. The first branch bypass line 1200 may include a 1-2 valve 1220 and a 1-3 valve 1230. The 1-1 valve 1210 may be disposed in the first branch line 1100. The 1-2 valve and the 1-3 valve 1230 may be disposed in the first branch bypass line 1200.

When the 1-1 valve 1210 is closed and the 1-2 valve 1220 and the 1-3 valve 1230 are opened, the heat exchange water transferred to the first branch line 1100 is transferred to the first branch bypass line. It can be transferred to (1200). Therefore, in this case, heat exchange water can be used as a high-temperature heat source of the first heater 210. The heat exchange water transferred to the first branch bypass line 1200 may be transferred to the first line 1000, and the heat exchange water transferred to the first branch bypass line 1200 may be discharged to the outside.

When the 1-1 valve 1210 is opened and the 1-2 valve 1220 and the 1-3 valve 1230 are closed, the heat exchange water transferred to the first branch line 1100 is transferred to the first line 1000. ) and can be released to the outside. In this case, the first heater 210 may not heat the co-combustion fuel transported through the second line 2000.

The vaporizer 20 can vaporize co-fired fuel. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water flowing through the first branch line 1100 as a high-temperature heat source. The first branch line 1100 may pass through the vaporizer 20. The vaporizer 20 may be connected to the second line 2000. The second line 2000 may transfer co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the vaporizer 20. The co-combustion fuel transported through the second line 2000 may be vaporized in the vaporizer 20. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water heated in the condenser 40 as a high-temperature heat source. The co-combustion fuel vaporized in the carburetor 20 may be transferred to the first accumulator through the fourth line 4000.

The first heater 210 may be disposed between the first pump 110 and the vaporizer 20. The first heater 210 may heat the co-combustion fuel pressurized in the first pump 110. The high-temperature heat source of the first heater 210 may be heat exchange water heated in the condenser 40. Heat exchange water passing through the first heater 210 through the first branch bypass line 1200 may be a high-temperature heat source of the first heater 210.

The second heater 220 may be disposed between the first heater 210 and the first accumulator. The second heater 220 may reheat the co-combustion fuel heated in the first heater 210. The high-temperature heat source of the second heater 220 may be blowdown water generated in the boiler 30. Blowdown water is a portion of water discharged from the boiler 30 to remove impurities. Blowdown water is a portion of water heated in the boiler 30.

The eighth line 8000 may be connected to the boiler 30. The eighth line 8000 may pass through the second heater 220. The eighth line 8000 can transport blowdown water. The blowdown water can pass through the second heater 220 through the eighth line 8000, and the blowdown water can be used as a high-temperature heat source of the second heater 220.

The fourth line 4000 can transfer the co-combustion fuel evaporated in the carburetor 20 to the first accumulator. The fourth line 4000 may connect the vaporizer 20 and the first accumulator. The fourth line 4000 may pass through the second heater 220 disposed between the vaporizer 20 and the first accumulator. The co-fired fuel transported through the fourth line 4000 may be heated by the second heater 220.

The first accumulator may be connected to the fifth line 5000. The fifth line 5000 can transfer gaseous co-fired fuel from the first accumulator to the boiler 30.

In the case of the above power generation system, heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20, which has the effect of saving energy used in the vaporizer 20. When seawater is used as heat exchange water, seawater that absorbs heat from the condenser 40 releases heat from the vaporizer 20 or the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . Since the blowdown water generated in the boiler 30 is used as a high-temperature heat source for the second heater 220, energy used in the second heater 220 can be saved. In addition, since the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 12 is a conceptual diagram showing a power generation system according to the tenth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The low pressure low pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110 and then to the vaporizer 20. The second line 2000 may transfer the liquid state co-combustion fuel transferred to the first pump 110 to the first heater 210. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110, the first heater 210, and the vaporizer 20.

The first heater 210 may heat the co-combustion fuel pressurized in the first pump 110. The first heater 210 may heat the co-combustion fuel transferred to the second line 2000. In this case, the high-temperature heat source of the first heater 210 may be heat exchange water heated in the vaporizer 20. Heat exchange water used as a high-temperature heat source in the first heater 210 may be discharged into the sea. In the first heater 210, the heat exchange water is cooled and the cooled heat exchange water is discharged into the sea, so thermal pollution of the sea can be prevented.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 may transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The third line 3000 may be connected to the fourth line 4000. The co-combustion fuel transferred through the third line 3000 may be transferred to the fourth line 4000 and then heated in the second heater 220.

The first line 1000 may include a first path or a second path. The first line 1000 may include a plurality of valves. The first line 1000 can change the flow path of heat exchange water to the first path or the second path through a combination of a plurality of lines and a plurality of valves. Here, the plurality of lines and valves included in the first line 1000 are not limited to the lines and valves shown in FIG. 12, and it is sufficient as long as they can form the heat exchange water path described.

The first line 1000 can transport heat exchange water through a first path. Here, the first path refers to a path through which heat exchange water is transported by the first line 1000, and may be a path through which heat exchange water is discharged after sequentially passing through the condenser 40 and the vaporizer 20. When the heat exchange water is transported through the first path, the heat exchange water may absorb heat from the condenser 40 and release heat from the vaporizer 20.

A first valve 1310, a second valve 1320, and a third valve 1330 may be disposed on the first path. The first valve 13010 may be disposed in front of the condenser 40. Therefore, when the first valve 1310 is opened, heat exchange water can flow into the condenser 40. The second valve 1320 may be placed behind the condenser 40 and in front of the carburetor 20. Therefore, when the second valve 1320 is opened, heat exchange water can flow from the condenser 40 to the vaporizer 20. The third valve 1330 may be disposed at the rear of the carburetor 20. Therefore, when the third valve 1330 is opened, heat exchange water can be discharged to the outside.

When the heat exchange water flows through the first path, the first valve 1310, the second valve 1320, and the third valve 1330 may be opened. By opening the first valve 1310, the second valve 1320, and the third valve 1330, heat exchange water can flow through the first path. That is, the heat exchange water may sequentially pass through the first valve 1310, the condenser 40, the second valve 1320, the vaporizer 20, and the third valve 1330. In order for heat exchange water to flow through the first path, the fourth valve 1340, fifth valve 1350, and sixth valve 1360, which will be described later, must be closed.

The first line 1000 can transfer heat exchange water to the second path. Here, the second path refers to a path through which heat exchange water is transported by the first line 1000, and may be a path through which heat exchange water is discharged after sequentially passing through the vaporizer 20 and the condenser 40. When the heat exchange water is transferred to the second path, the heat exchange water can emit heat from the vaporizer 20 and absorb heat from the condenser 40.

A fourth valve 1340, a fifth valve 1350, and a sixth valve 1360 may be disposed on the second path. The fourth valve 1340 may be placed in front of the carburetor 20. Additionally, the fourth valve 1340 may be placed in front of the first valve 1310. When the fourth valve 1340 is opened, heat exchange water can flow into the vaporizer 20. When the fourth valve 1340 is closed and the first valve 1310 is opened, heat exchange water can flow into the first valve 1310. The fifth valve 1350 may be placed at the rear of the carburetor 20, and the fifth valve 1350 may be placed at the front of the condenser 40. Therefore, when the 5 valve 1350 is opened, the heat exchange water flowing out of the vaporizer 20 can flow into the condenser 40. The sixth valve 1360 may be disposed at the rear of the condenser 40. When the sixth valve 1360 is opened, the heat exchange water discharged from the condenser 40 may be discharged to the outside.

When the heat exchange water flows through the second path, the fourth valve 1340, the fifth valve 1350, and the sixth valve 1360 may be opened. By opening the fourth valve 1340, the fifth valve 1350, and the sixth valve 1360, heat exchange water can flow through the second path. Heat exchange water may sequentially pass through the fourth valve 1340, the vaporizer 20, the fifth valve 1350, the condenser 40, and the sixth valve 1360. In order for heat exchange water to flow through the second path, the first valve 1310, the second valve 1320, and the third valve 1330 must be closed.

Referring to FIG. 13, the effect of heat exchange water flowing through the first or second path will be explained. 13 is a graph showing the year-round seawater temperature distribution in Samcheok, Korea. As an example, the seawater temperature distribution in the Samcheok area is used, but it is clear that the same effect is achieved in any location where the seawater temperature distribution varies depending on the season, regardless of the region.

Referring to Figure 13, it can be seen that the year-round seawater temperature distribution ranges from a minimum of 2.1℃ to a maximum of 28℃. In the case of a period when the temperature of seawater used as heat exchange water is low, the heat absorption efficiency in the condenser 40 can be increased because the temperature of the seawater is low. Therefore, when seawater, which is heat exchange water, flows through the first path, heat can be effectively absorbed in the condenser and then released in the third heater 230.

Conversely, in the case where the temperature of the seawater used as heat exchange water is high, the seawater can be used as a heat source for the vaporizer 20 even without heating it in the condenser 40 because the temperature of the seawater is high. Therefore, when seawater, which is heat exchange water, flows through the second path, the seawater can release heat from the vaporizer 20 and then flow into the condenser 40 to absorb heat. Therefore, even when the temperature of seawater is high, heat absorption efficiency in the condenser 40 can be improved.

Referring to Table 1 and FIG. 13, the effects of the operation of the first line 1000 and the first bypass line 1300 will be described.

압력(bar)pressure (bar)	1One	22	33	44	55	66
포화온도(℃)Saturation temperature (℃)	-33.4-33.4	-18.8-18.8	-9.2-9.2	-1.87-1.87	4.24.2	9.39.3

Table 1 shows the saturation temperature of ammonia according to pressure, and Figure 13 is a graph showing the annual seawater temperature distribution in Samcheok, Korea. As an example, the saturation temperature of ammonia and the seawater temperature distribution in the Samcheok area are used, but it is clear that the same effect is achieved as long as the seawater temperature is higher than the saturation temperature of the co-fired gas regardless of the region or time. Figure 13 Referring to , you can see that the year-round seawater temperature distribution ranges from a minimum of 2.1℃ to a maximum of 28℃. Referring to this, it can be seen that seawater can be used to heat the co-combustion fuel if the temperature of the sea water is higher than the saturation temperature of the co-combustion fuel stored in the storage tank 10, regardless of region or date. Condenser 40 In winter, when the temperature of the seawater used as heat exchange water is low, the heat absorption efficiency in the condenser 40 may decrease because the temperature of the seawater is low. Therefore, in this case, seawater can be transported through the first path. When seawater is transported through the first path, the seawater is heated in the condenser 40 and then can be used as a high-temperature heat source in the vaporizer 20. Since seawater is used when vaporizing co-fired fuel in the vaporizer 20, there is an effect of saving energy. Additionally, since the seawater heated in the condenser 40 is cooled in the vaporizer 20, there is an effect of preventing thermal pollution of the sea. In the summer, when the temperature of sea water used as heat exchange water for the condenser 40 is high, the heat absorption efficiency in the condenser 40 may decrease because the temperature of the sea water is high. Therefore, in this case, seawater can be transported through the second path. When seawater is transferred to the second path, the seawater is cooled in the vaporizer 20 and then can be used as a low-temperature heat source in the condenser 40. Since seawater is used when vaporizing co-fired fuel in the vaporizer 20, there is an effect of saving energy. In addition, since the seawater cooled in the vaporizer 20 is used as a low-temperature heat source in the condenser 40, the heat transfer rate of the condenser 40 is increased.

For reference, the flow of seawater through the first or second path is not determined by a specific date or specific season. For example, when ammonia used as a co-combustion fuel is at a temperature of 5 bar, the vaporization temperature of ammonia is 4.2°C. The seawater temperature in the vaporizer 20 is sufficient to vaporize ammonia. Accordingly, if the temperature of the seawater is higher than 4.2°C and is sufficiently high to vaporize ammonia, the seawater may flow in the second path. Conversely, if the temperature of the seawater is low enough to vaporize ammonia, the seawater may flow through the first path.

The vaporizer 20 can vaporize co-fired fuel. The vaporizer 20 can vaporize co-fired fuel by using heat exchange water flowing through the first line 1000 or the first bypass line 1300 as a high-temperature heat source. The carburetor 20 can vaporize co-combustion fuel flowing into the carburetor 20 through the second line 2000. The co-combustion fuel vaporized in the carburetor 20 may flow out of the carburetor 20 through the fourth line 4000.

The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The fourth line 4000 may pass through the second heater 220 and the second compressor 140. The co-fired fuel transported through the fourth line 4000 may be heated in the second heater 220. The co-fired fuel heated in the second heater 220 and transferred through the fourth line 4000 may be pressurized by the second compressor 130.

The second heater 220 can heat the co-combustion fuel transported through the fourth line 4000. The high-temperature heat source of the second heater 220 may be blowdown water discharged from the boiler 30. Blowdown water may be a portion of water discharged from the boiler 30 to remove impurities. Blowdown water may be part of the water heated in boiler 30.

Figure 14 is a conceptual diagram showing a power generation system according to the 11th embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a low pressure storage tank 100 (or storage tank), a first pump 110, a first compressor 120, a second pump 130, a carburetor 20, a first line 1000, and a first compressor 1000. 2nd line (2000), 3rd line (3000), 4th line (4000), 5th line (5000), 1st heater (210), 2nd heater (220), 8th line (8000), 9th It may include a line 9000, a third heater 230, a second compressor 130, and a first accumulator.

The low-pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the vaporizer 20. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110 and then to the vaporizer 20. The second line 2000 may transfer the liquid state co-combustion fuel transferred to the first pump 110 to the first heater 210. The second line 2000 may transfer the liquid co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) to the first pump 110, the first heater 210, and the vaporizer 20.

The first heater 210 may heat the co-combustion fuel pressurized in the first pump 110. The first heater 210 can heat the co-combustion fuel transferred to the second line 2000. In this case, the high-temperature heat source of the first heater 210 may be a heat medium circulating in the ninth line 9000. The high-temperature heat source of the first heater 210 may be a heat medium flowing through the ninth bypass line 9100 of the ninth line 9000.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may pass through the first compressor 120 and be connected to the vaporizer 20. The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 may transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The co-combustion fuel transferred through the third line 3000 may pass through the first compressor 120, be compressed, and be transferred to the vaporizer 20.

The first line 1000 can transport heat exchange water. The heat exchange water may be seawater. The first line 1000 may be connected to the condenser 40 and the third heater 230. Heat exchange water transported through the first line 1000 may pass through the condenser 40 and the third heater 230. Heat exchange water transported through the first line 1000 may sequentially pass through the condenser 40 and the third heater 230.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat generated from steam that passes through the turbine and is condensed in the condenser 40. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000. The heat exchange water may emit heat in the third heater 230. The heat emitted by the heat exchange water from the third heater 230 may be heat transferred from the condenser 40. Heat emitted by the heat exchange water from the third heater 230 may be transferred to the heat medium. The heat emitted by the heat exchange water from the third heater 230 may be transferred to the heat medium circulating through the ninth line 9000.

The vaporizer 20 can vaporize co-fired fuel. The vaporizer 20 can vaporize co-fired fuel by using the heat medium flowing through the ninth line 9000 as a high-temperature heat source. The carburetor 20 can vaporize co-combustion fuel flowing into the carburetor 20 through the second line 2000. The co-combustion fuel vaporized in the carburetor 20 may flow out of the carburetor 20 through the fourth line 4000.

The ninth line 9000 may be a line that circulates between the vaporizer 20 and the third heater 230. The ninth line 9000 may pass through the vaporizer 20 and the third heater 230. A heat medium may circulate in the ninth line (9000). The heat medium circulating in the ninth line 9000 may be heated in the third heater 230. Heat exchange water passing through the third heater 230 may heat the heat medium passing through the third heater 230. The heat medium circulating in the ninth line 9000 may be cooled in the vaporizer 20. The heat medium circulating in the ninth line 9000 can transfer heat to the co-fired fuel in the vaporizer 20. The heat medium circulating in the ninth line 9000 can heat the co-fired fuel in the vaporizer 20. Here, the heat medium may be triethylene glycol, for example.

The 9th line 9000 may include a 9th bypass line 9100. The 9th bypass line 9100 may pass through the first heater 210. The ninth bypass line 9100 can transfer the heat medium that has passed through the vaporizer 20 to the first heater 210. The 9th line 9000 may include the 9-1 valve 9110. The 9th bypass line 9100 may include a 9-2 valve 9120 and a 9-3 valve 9130. When the 9-1 valve 9110 is closed and the 9-2 valve 9120 and the 9-3 valve 9130 are opened, the heat medium can pass through the 9th bypass line 9100. That is, it can pass through the 9th bypass line 9100 and circulate through the 9th line 9000. When the 9-1 valve (9110) is opened and the 9-2 valve (9120) and 9-3 valve (9130) are closed, the heat medium does not pass through the 9th bypass line (9100) but flows into the 9th line (9000). ) can be cycled.

Since heat exchange water and co-fired fuel do not directly exchange heat but exchange heat indirectly through the heat medium, corrosion, freezing, or damage to pipes that may occur due to a decrease in seawater temperature can be prevented.

The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The fourth line 4000 may pass through the second heater 220 and the second compressor 130. The co-fired fuel transported through the fourth line 4000 may be heated in the second heater 220. The co-fired fuel heated in the second heater 220 and transferred through the fourth line 4000 may be pressurized by the second compressor 130.

In the case of the above power generation system, heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20, which has the effect of saving energy used in the vaporizer 20. When seawater is used as heat exchange water, seawater that absorbs heat in the condenser 40 releases heat in the vaporizer 20 or the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . Since heat exchange water and co-fired fuel do not directly exchange heat but exchange heat indirectly through the heat medium, corrosion, freezing, or damage to pipes that may occur due to a decrease in seawater temperature can be prevented . Additionally, since seawater and ammonia exchange heat indirectly through the heat medium, seawater pollution can be prevented if the ammonia pipe is damaged.

Since the blowdown water generated in the boiler 30 is used as a high-temperature heat source for the second heater 220, energy used in the second heater 220 can be saved. In addition, since the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 15 is a conceptual diagram showing a power generation system according to the twelfth embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a low pressure storage tank 100 (or storage tank), a first pump 110, a first compressor 120, a second pump 130, a carburetor 20, a first line 1000, and a first compressor 1000. 2nd line (2000), 3rd line (3000), 4th line (4000), 5th line (5000), 1st heater (210), 2nd heater (220), 8th line (8000), 9th It may include a line 9000, a third heater 230, a second compressor 140, and a first accumulator.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat generated from steam that passes through the turbine and is condensed in the condenser 40. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000. The heat exchange water may emit heat in the third heater 230. The heat emitted by the heat exchange water from the third heater 230 may be heat transferred from the condenser 40. The heat emitted from the third heater 230 by the heat exchange water may be transferred to the heat medium. The heat emitted by the heat exchange water from the third heater 230 may be transferred to the heat medium circulating through the ninth line 9000.

The first line 1000 may include a first path or a second path. The first line 1000 may include a plurality of valves. The first line 1000 can change the flow path of heat exchange water to the first path or the second path through a combination of a plurality of lines and a plurality of valves. Here, the plurality of lines and valves included in the first line 1000 are not limited to the lines and valves shown in FIG. 15, and it is sufficient as long as they can form the heat exchange water path described.

The first line 1000 can transport heat exchange water through a first path. Here, the first path refers to a path through which heat exchange water is transported by the first line 1000, and may be a path through which heat exchange water is discharged after sequentially passing through the condenser 40 and the third heater 230. When the heat exchange water is transferred through the first path, the heat exchange water may absorb heat from the condenser 40 and release heat from the third heater 230.

A first valve 1310, a second valve 1320, and a third valve 1330 may be disposed on the first path. The first valve 13010 may be disposed in front of the condenser 40. Therefore, when the first valve 1310 is opened, heat exchange water can flow into the condenser 40. The second valve 1320 may be placed behind the condenser 40 and in front of the third heater 230. Therefore, when the second valve 1320 is opened, heat exchange water can flow from the condenser 40 to the third gasket 230. The third valve 1330 may be disposed behind the third heater 230. Therefore, when the third valve 1330 is opened, heat exchange water can be discharged to the outside.

When the heat exchange water flows through the first path, the first valve 1310, the second valve 1320, and the third valve 1330 may be opened. By opening the first valve 1310, the second valve 1320, and the third valve 1330, heat exchange water can flow through the first path. Heat exchange water may sequentially pass through the first valve 1310, the condenser 40, the second valve 1320, the third heater 230, and the third valve 1330. In order for heat exchange water to flow through the first path, the fourth valve 1340, fifth valve 1350, and sixth valve 1360, which will be described later, must be closed.

The first line 1000 can transfer heat exchange water to the second path. Here, the second path refers to a path through which heat exchange water is transported by the first line 1000, and may be a path through which heat exchange water is discharged after sequentially passing through the third heater 230 and the condenser 40. When the heat exchange water is transferred to the second path, the heat exchange water may emit heat from the third heater 230 and absorb heat from the condenser 40.

A fourth valve 1340, a fifth valve 1350, and a sixth valve 1360 may be disposed on the second path. The fourth valve 1340 may be placed in front of the third heater 230. Additionally, the fourth valve 1340 may be placed in front of the first valve 1310. When the fourth valve 1340 is opened, heat exchange water can flow into the third heater 230. When the fourth valve 1340 is closed and the first valve 1310 is opened, heat exchange water can flow into the first valve 1310. The fifth valve 1350 may be placed behind the third heater 230, and the fifth valve 1350 may be placed in front of the condenser 40. Therefore, when the 5 valve 1350 is opened, the heat exchange water flowing out of the third heater 230 can flow into the condenser 40. The sixth valve 1360 may be disposed at the rear of the condenser 40. When the sixth valve 1360 is opened, the heat exchange water flowing out of the condenser 40 may be discharged to the outside.

When the heat exchange water flows through the second path, the fourth valve 1340, the fifth valve 1350, and the sixth valve 1360 may be opened. By opening the fourth valve 1340, the fifth valve 1350, and the sixth valve 1360, heat exchange water can flow through the second path. Heat exchange water may sequentially pass through the fourth valve 1340, the third heater 230, the fifth valve 1350, the condenser 40, and the sixth valve 1360. In order for heat exchange water to flow through the second path, the first valve 1310, the second valve 1320, and the third valve 1330 must be closed.

Conversely, in the case where the temperature of the seawater used as heat exchange water is high, the seawater can be used as a heat source for the third heater 230 without heating it in the condenser 40 because the temperature of the seawater is high. Therefore, when seawater, which is heat exchange water, flows through the second path, the seawater can release heat from the third heater 230 and then flow into the condenser 40 to absorb heat. Therefore, even when the temperature of seawater is high, heat absorption efficiency in the condenser 40 can be improved.

The fourth line 4000 can transfer the co-combustion fuel vaporized in the carburetor 20 to the first accumulator. The fourth line 4000 may pass through the second heater 220 and the second compressor 140. The co-fired fuel transported through the fourth line 4000 may be heated in the second heater 220. The co-fired fuel heated in the second heater 220 and transferred through the fourth line 4000 may be pressurized by the second compressor 140.

In the case of the above power generation system, heat exchange water heated in the condenser 40 is used as a high-temperature heat source for the vaporizer 20, which has the effect of saving energy used in the vaporizer 20. When seawater is used as heat exchange water, seawater that absorbs heat from the condenser 40 releases heat from the vaporizer 20 or the first heater 210 and releases it back into the sea, thereby preventing thermal pollution of the sea. . Since heat exchange water and co-fired fuel do not directly exchange heat but exchange heat indirectly through the heat medium, corrosion, freezing, or damage to pipes that may occur due to a decrease in seawater temperature can be prevented. Additionally, since seawater and ammonia exchange heat indirectly through the heat medium, seawater pollution can be prevented if the ammonia pipe is damaged.

Figure 16 is a conceptual diagram showing a power generation system according to the 13th embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system may include a low pressure storage tank 100, a first accumulator, a first line 1000, a second line 2000, a third line 3000, and a fifth line 5000.

The low-pressure storage tank 100 (or storage tank) can store co-fired fuel. The storage tank 100 may store liquefied co-combustion fuel. Co-fired fuel may be burned in the boiler 30. Co-fired fuel may be burned in the boiler 30 together with fossil fuel. The co-fired fuel may be ammonia, for example.

The low-pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the first pump 110, the condenser 40, and the first accumulator. The second line 2000 transfers the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state to the first pump 110, and transfers the co-combustion fuel pressurized in the first pump 110 to the condenser ( 40), and the co-fired fuel vaporized in the condenser 40 can be transferred to the first accumulator.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 may transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The third line 3000 may be connected to the first compressor 120 and the first accumulator. The third line 3000 transfers the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) from the low-pressure storage tank 100 (or storage tank) to the first compressor 120, and the first compressor ( The co-combusted fuel compressed in 120) can be transferred to the first accumulator.

The first line 1000 can transport heat exchange water. The heat exchange water may be seawater. The first line 1000 may pass through the condenser 40. Heat exchange water transported through the first line 1000 may pass through the condenser 40.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat emitted by steam passing through the turbine and condensing in the condenser 40. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000.

The condenser 40 can condense steam discharged from the turbine. The first line 1000, the second line 2000, and the sixth line 6000 can pass through the condenser 40. Heat exchange may occur within the condenser 40. The vapor transported through the sixth line 6000 may emit heat as it is condensed in the condenser 40. The co-fired fuel transferred through the second line 2000 may be vaporized by receiving heat from the condenser 40. In this case, the heat received by the co-fired fuel may be the heat released as the vapor transported through the sixth line 6000 condenses. Heat exchange water transported through the first line 1000 may receive heat from the condenser 40. In this case, the heat exchange water can receive the heat released as the steam transported through the sixth line 6000 condenses. However, when the co-fired fuel transported through the second line (2000) receives all of the heat released as the vapor transported through the sixth line (6000) condenses, the heat exchange water does not exchange heat within the condenser (40). may be released without

The first accumulator may be connected to the third line 3000. The co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) may be transferred to the first accumulator through the third line 3000. The first accumulator may be connected to the second line 2000. The second line 2000 can transfer the co-combustion fuel vaporized in the condenser 40 to the first accumulator. The first accumulator may be connected to the fifth line 5000. The fifth line 5000 can transfer gaseous co-fired fuel from the first accumulator to the boiler 30.

In the case of the above power generation system, the co-fired fuel is vaporized using the heat emitted from the steam condensed in the condenser 40, thereby reducing the energy used for co-fired fuel vaporization.

In addition, since the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) is used as fuel for the boiler 30, there is an effect of reducing the amount of co-fired fuel used.

Figure 17 is a conceptual diagram showing a power generation system according to the 14th embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The fuel supply system includes a low-pressure storage tank 100, a first accumulator, a first line 1000, a second line 2000, a third line 3000, a fifth line 5000, and a first heater 210. It can be included.

The low-pressure storage tank 100 (or storage tank) may be connected to the third line 3000. The third line 3000 may be disposed at the top of the low-pressure storage tank 100 (or storage tank). The third line 3000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a gaseous state. The third line 3000 may transport co-combustion fuel evaporated within the low-pressure storage tank 100 (or storage tank). The third line 3000 may be connected to the first compressor 120, the first heater 210, and the first accumulator. The third line 3000 transfers the co-fired fuel evaporated in the low-pressure storage tank 100 (or storage tank) from the low-pressure storage tank 100 (or storage tank) to the first compressor 120, and the first compressor ( The co-combustion fuel compressed in 120) may be transferred to the first heater 210, and the co-combustion fuel heated in the first heater 210 may be transferred to the first accumulator.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat generated from steam that passes through the turbine and is condensed in the condenser 40. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000.

The condenser 40 can condense steam discharged from the turbine. The first line 1000, the third line 3000, and the sixth line 6000 can pass through the condenser 40. Heat exchange may occur within the condenser 40. The vapor transported through the sixth line 6000 may emit heat as it is condensed in the condenser 40. The co-fired fuel transported through the third line 3000 may be vaporized by receiving heat from the condenser 40. In this case, the heat received by the co-fired fuel may be the heat released as the vapor transported through the sixth line 6000 condenses. Heat exchange water transported through the first line 1000 may receive heat from the condenser 40. In this case, the heat exchange water can receive the heat released as the steam transported through the sixth line 6000 condenses. However, when the co-fired fuel transported through the third line (3000) receives all of the heat released as the vapor transported through the sixth line (6000) condenses, the heat exchange water does not exchange heat within the condenser (40). may be released without

The first heater 210 may be placed on the third line 3000. The third line 3000 may pass through the first heater 210. The first heater 210 can heat the co-combustion fuel transported through the third line 3000. The heat source of the first heater 210 may be an external heat source. The heat source of the first heater 210 may be, for example, a heat source that uses electricity.

Figure 18 is a conceptual diagram showing a power generation system according to the 15th embodiment of the present invention. Hereinafter, description of parts that are the same as the above-described power generation system may be omitted, and the description may focus on differences.

The low-pressure storage tank 100 (or storage tank) can store co-fired fuel. The storage tank 10 can store liquefied co-fired fuel. Co-fired fuel may be burned in the boiler 30. Co-fired fuel may be burned in the boiler 30 together with fossil fuel. The co-fired fuel may be ammonia, for example.

The low-pressure storage tank 100 (or storage tank) may be connected to the second line 2000. The second line 2000 may transfer the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state. The second line 2000 may be connected to the first pump 110, the first heater 210, the condenser 40, and the first accumulator. The second line 2000 transfers the co-combustion fuel stored in the low-pressure storage tank 100 (or storage tank) in a liquid state to the first pump 110, and transfers the co-combustion fuel pressurized in the first pump 110 to the first pump 110. It can be transferred to the heater 210. Additionally, the second line 2000 may transfer co-combustion fuel heated in the first heater 210 to the condenser 40 and transfer co-combustion fuel vaporized in the condenser 40 to the first accumulator.

The first line 1000 can transport heat exchange water. The heat exchange water may be seawater. The first line 1000 may sequentially pass through the condenser 40 and the first heater 210. Heat exchange water may sequentially pass through the condenser 40 and the first heater 210 through the first line 1000.

Heat exchange water may be heated in the condenser 40. The heat exchange water can absorb heat from the condenser 40. The heat absorbed by the heat exchange water in the condenser 40 may be heat generated from steam that passes through the turbine and is condensed in the condenser 40. The heat exchange water can receive heat from steam transferred from the condenser 40 through the sixth line 6000. Heat exchange water heated in the condenser 40 may emit heat in the first heater 210. Heat exchange water heated in the condenser 40 may be used as a high-temperature heat source of the first heater 210. The heat emitted from the first heater 210 by the heat exchange water may be transferred to the co-fired fuel passing through the first heater 210. The heat emitted from the first heater 210 by the heat exchange water can heat the co-fired fuel passing through the first heater 210.

The condenser 40 can condense steam discharged from the turbine. The first line 1000, the second line 2000, and the sixth line 6000 can pass through the condenser 40. Heat exchange may occur within the condenser 40. The vapor transported through the sixth line 6000 may emit heat as it is condensed in the condenser 40. The co-fired fuel transferred through the second line 2000 may be vaporized by receiving heat from the condenser 40. In this case, the heat received by the co-fired fuel may be the heat released as the vapor transported through the sixth line 6000 condenses. Heat exchange water transported through the first line 1000 may receive heat from the condenser 40. In this case, the heat exchange water can receive the heat released as the steam transported through the sixth line 6000 condenses. However, when the co-fired fuel transported through the third line (3000) receives all of the heat released as the vapor transported through the sixth line (6000) condenses, the heat exchange water does not exchange heat within the condenser (40). may be released without

The first heater 210 may be disposed on the second line 2000. The second line 2000 may pass through the first heater 210. The first heater 210 can heat the co-combustion fuel transported through the second line 2000. The high-temperature heat source of the first heater 210 may be heat exchange water transported through the first line 1000. Heat exchange water heated in the condenser 40 may be used as a high-temperature heat source of the first heater 210.

In addition, since heat exchange water and co-fired fuel exchange heat in the first heater, it can be designed by adjusting the heat exchange load with the sixth line 6000 of condensate passing from the carburetor to the turbine.

Although various embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible without departing from the technical spirit of the present invention as set forth in the claims. This will be self-evident to anyone with average knowledge in the relevant technical field. Additionally, the above-described embodiments may be implemented by deleting some components, and each embodiment may be implemented in combination with each other.

Claims

In the fuel supply system for vaporizing co-fired fuel supplied to the power generation system,

a condenser that condenses steam transferred from the turbine of the power generation system;

a storage tank in which the co-fired fuel is liquefied and stored;

a vaporizer that vaporizes the co-fired fuel transferred from the storage tank; and

It includes a first line passing through the condenser and the vaporizer,

Heat exchange water is transferred through the first line,

The heat exchange water is heated in the condenser,

The vaporizer vaporizes the co-fired fuel with the heat exchange water heated in the condenser,

A fuel supply system that supplies the co-combustion fuel vaporized in the carburetor to the power generation system.
According to paragraph 1,

It includes a second line and a third line connected to the storage tank,

The second line transfers the co-fired fuel in a liquid state to the vaporizer,

The third line transfers the co-fired fuel evaporated in the storage tank,

A fuel supply system that supplies the co-combustion fuel vaporized in the carburetor and the co-combustion fuel transferred through the third line to the power generation system.
According to paragraph 1,

a fourth line transporting the co-fired fuel vaporized in the carburetor; and

A first heater disposed between the vaporizer and the boiler of the power generation system,

The first line includes a first branch line,

The first branch line is disposed behind the condenser and transfers at least a portion of the heat exchange water heated in the condenser to the first heater,

A fuel supply system in which the first heater heats the co-fired fuel transported through the fourth line.
According to paragraph 2,

A fuel supply system including a second heater disposed behind the first heater.
According to paragraph 4,

The third line passes through the third heater,

A fuel supply system in which the co-fired fuel transferred through the third line is heated by the third heater.
According to paragraph 2,

The third line is a fuel supply system that transfers the co-fired fuel evaporated in the storage tank to the vaporizer.
According to clause 6,

a fourth line transporting the co-fired fuel vaporized in the carburetor; and

A first heater disposed between the vaporizer and the boiler of the power generation system,

The first line includes a first branch line,

The first branch line is disposed behind the condenser and transfers at least a portion of the heat exchange water heated in the condenser to the first heater,

A fuel supply system in which the first heater heats the co-fired fuel transported through the fourth line.
According to paragraph 2,

A fourth line transporting the co-combustion fuel vaporized in the carburetor to the first accumulator,

The third line is connected to the fourth line and transfers the co-fired fuel evaporated in the storage tank to the fourth line.