WO2015023009A1

WO2015023009A1 - Complex power generation and desalination system

Info

Publication number: WO2015023009A1
Application number: PCT/KR2013/007262
Authority: WO
Inventors: 임용훈; 박병식; 이재용; 이동현
Original assignee: 한국에너지기술연구원
Priority date: 2013-08-13
Filing date: 2013-08-13
Publication date: 2015-02-19

Abstract

Provided is a complex power generation and desalination system. The system comprises: at least one seawater storage tank placed at a predetermined depth or greater from the surface of the sea to store seawater collected through a water intake hole; a power generation device module including a water intake tube for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using potential energy of the seawater transferred through the water intake tube; a first desalination device module for desalinating the seawater by evaporating the seawater stored in the seawater storage tank and then transferring a freshwater in a vapor state to a freshwater tank through a pipe; and a second desalination device module including first and second pressure tanks for supplying pressure using the pressure of the seawater stored in the seawater storage tank and a desalination means for desalinating the seawater through a reverse osmosis method using the pressure supplied from the first and second pressure tanks.

Description

Complex Power Generation and Desalination Systems

The present invention relates to a complex power generation and desalination system.

The power generation device is a device for generating electric energy necessary for daily life, and there is a fear of causing environmental pollution or environmental destruction. Recently, development of an environment-friendly power generation device using natural power such as solar, hydro, and wind power is encouraged.

However, in the case of a power generator using natural force, it is difficult to predict the amount of power generation, so it is often difficult to stably produce a constant power.

On the other hand, various techniques for producing freshwater using seawater have been applied recently, but the cost-effective freshwater production is difficult due to the large amount of energy (kwh / ton) required for freshwater production compared to energy input for each unit technology.

Therefore, there is a need to develop an efficient complex energy technology through the convergence between technologies that produce more stable power using natural forces and produce fresh water using the same.

In this context, it is an object of the present invention to provide a complex power generation and desalination system.

In order to achieve the above object, in one aspect, the present invention is at least one seawater storage tank is installed below a certain depth from the sea surface for storing the seawater taken through the intake; A power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe; A first desalination device module for evaporating the seawater stored in the storage tank to transfer freshwater in a vapor state to a freshwater storage tank through a pipe to desalination; And desalination means for desalination of the seawater by reverse osmosis using first and second pressurized tanks for supplying pressure using the pressure of the seawater stored in the reservoir and pressures supplied from the first and second pressurized tanks. It provides a complex power generation and desalination system comprising a; 2nd desalination device module comprising a.

The generator module may be installed in a machine room installed below the sea level at a predetermined depth or more. In addition, the generator module may include a plurality of generator units installed in a plurality of different positions.

The intake pipe may be designed vertically over a predetermined length.

The apparatus may further include a divider for storing or distributing the power generated by the generator module.

The first desalination device module may include heating means for heating the seawater in the reservoir through heat exchange with seawater using geothermal heat.

The first desalination device module may include heating means for heating up the seawater in the reservoir using power generated through at least one of the power generation module, solar power generation, and wind power generation.

The first desalination device module may further include a blower installed for the transfer of fresh water in the vapor state transferred through the pipe.

The first desalination device module may further include condensing means for condensing the fresh water in the vapor state transferred through the pipe.

In the second desalination device module, the first pressurized tank may be installed near the reservoir and the second pressurized tank may be installed near the desalination means.

The seawater reservoir may include a hydraulic lift.

The seawater storage tank may include an opening for removing by-products generated by evaporation of seawater using the hydraulic lift.

In another aspect, the present invention is at least one seawater reservoir installed below a certain depth from the sea surface for storing the seawater taken through the intake; A power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe; And a desalination device module for desalination by transferring fresh water in a vapor state to a freshwater storage tank through a pipe by evaporating seawater stored in the storage tank using electric power generated by at least one of geothermal or power generator module, wind power, and solar light. It provides a complex power generation and desalination system comprising a.

In another aspect, the present invention, at least one seawater storage tank is installed below a certain depth from the sea surface for storing the seawater taken through the intake; And a power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe. to provide.

In another aspect, the present invention is at least one seawater storage tank is installed at a predetermined depth or less from the sea surface to store the seawater taken through the intake; A power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe; And desalination means for desalination of the seawater by reverse osmosis using first and second pressurized tanks for supplying pressure using the pressure of the seawater stored in the reservoir and pressures supplied from the first and second pressurized tanks. It provides a complex power generation and desalination system comprising a desalination device module comprising a.

As described above, according to the present invention, it is possible to produce electric power and produce fresh water in an eco-friendly and economical manner during the potential energy circulation of sea water.

In addition, seawater, an infinite resource, can produce stable power regardless of time or natural conditions.

Complex power generation and desalination devices and their systems can be constructed using underground spaces near the coast without the need for separate man-made structures or high natural spaces, which can reduce costs and reduce the need for land-based land security. have.

In addition, due to its location on the seashore, it is possible to secure more power by utilizing offshore wind resources.

1 is a view briefly showing the components of the complex power generation and desalination system according to an embodiment of the present invention.

2 is a view briefly showing the components of the combined cycle power generator according to an embodiment of the present invention.

3 is a view briefly showing the components of the composite desalination apparatus according to an embodiment of the present invention.

4 is a view briefly showing other components of the composite desalination apparatus according to an embodiment of the present invention.

5 is a view briefly showing an example of the components of the seawater reservoir according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

The complex power generation and desalination system according to the present invention is a basement seawater storage tank for desalination and potential energy generation using a hydrophobic power generation using the potential energy from the sea surface and a reverse osmosis device using the high pressure pressure according to the water load according to the seawater storage. It is implemented as a system capable of generating and using complex energy such as seawater evaporation and additional desalination using renewable energy sources to secure the capacity of the.

Referring to FIG. 1, a combined power generation and desalination system according to an embodiment of the present invention includes a hydrophobic power generation device module 10, a first desalination device module 20, and a second desalination device module using potential energy from sea level. 30).

In addition, the combined cycle power generation and desalination system according to an embodiment of the present invention includes a storage tank 5 installed at a predetermined depth required for hydrophobic power generation from the sea surface in order to use the potential energy of the seawater. The storage tank 5 may be installed inside the machine room 1, for example, in a predetermined depth in an underground space near the coast.

The hydrophobic power generation device module 10 includes a water intake pipe 11 installed at a predetermined position below the sea level to transfer the seawater collected from the water intake port for seawater to the storage tank 5, and the water intake pipe ( A hydrophobic power generator 13 installed on one side of the water intake pipe 11 and a distributor 15 for storing or distributing electric power generated from the hydrophobic power generator 13 at a position of a predetermined depth or less from the intake port of 11). do.

Meanwhile, the first desalination device module 20 may include a first heater 21 and / or a second heater 23, and a first heating 21 that heat water in the reservoir 5 using geothermal and / or supply power. And / or a pipe 25 for transferring fresh water in the vapor state evaporated by the second heater 23 to the fresh water reservoir 7.

Fresh water changed to the steam state in the reservoir (5) can be moved to the ground fresh water storage tank (7) using its own lifting force and the pressure of the reservoir (5), the first desalination device module 20 is fresh water in the steam state In order to move it may be further provided with a blower (27) for driving with power.

Meanwhile, the first desalination device module 10 may further include a separate condenser 29 for condensing fresh water in a vapor state moving to the freshwater storage tank 7 through heat exchange.

The second desalination device module 30 is a hydraulic lift (6), the first pressure tank 33 and the second pressure tank (6) for receiving the pressure required for the reverse osmosis method by using the load of the sea water stored in the reservoir (5) 37) and a reverse osmosis desalination system 39 for desalination of the seawater by the reverse osmosis method and storing the desalination water in the fresh water storage tank 7.

In the above, the freshwater reservoir 7 has been described as an example in which one reservoir is implemented, but the present invention is not limited thereto, and the freshwater reservoir 7 or the first and second

desalination device modules

20 and 30 may be provided as necessary. It can also be implemented by connecting different freshwater reservoirs.

2 is a view briefly showing the components of the hydrophobic power generation device module 10 of the combined cycle power generation device according to an embodiment of the present invention.

The water intake pipe 11 connected from the intake port of the hydrophobic power generation module 10 to the storage tank 5 is vertically designed to be longer than a predetermined length so that the seawater falls at a constant speed and more than a certain amount by using gravity. It must be designed to a sufficient degree for the development of small hydropower.

In addition, the intake port of the hydrophobic power generation device module 10 may include a control unit (not shown) to control the amount of seawater flowing into the intake pipe 11.

The hydrophobic power generator 13 installed on one side of the water intake pipe 11 is a hydrophobic power generator that generates power by using potential energy of seawater flowing from the water intake port and falling through the water intake pipe 11, for example, an electromagnetic induction generator and It may be the same known power generation device.

In addition, although only one hydropower generator 13 is shown in the drawing, a plurality of hydropower generator units may be installed if necessary, and the installation positions of the plurality of hydropower generators may be different from each other.

The divider 15 may store or transmit power generated by the hydropower generator 13 to a separate power storage unit 60 or a

heater

21 or 23.

The small hydro power generating device module 10 may be constructed using an underground space near the coast without restriction on the need for a separate artificial structure or a high position natural space installed on the existing ground.

In addition, instead of using the potential energy of the stored water by transferring water to the existing high position on the ground, by installing a storage tank in the basement at a certain depth away from the sea surface, it uses the potential energy of water due to the natural fall using gravity, so there is no need for additional external energy administration. Stable hydropower generation is possible.

3 is a view briefly showing the components of the first desalination device module 20 of the composite desalination device according to an embodiment of the present invention.

The first heater 21 of the first desalination device module 20 receives power generated by solar light from the geothermal or photovoltaic power generation device 40, for example, through heat exchange with seawater using geothermal heat. It is a heating means which raises the temperature of the seawater in the reservoir 5.

In addition, the second heater 23 of the first desalination device module 20 is a storage tank using power generated by, for example, the hydro power generation module 10, the solar power generation device 40, or the wind power generation device 50. It is a heating means which heats up the seawater in (5).

The fresh water in the vapor state evaporated by the first heater 21 and / or the second heater 23 is moved to the ground fresh water reservoir 7 using its lifting force and the pressure according to the evaporation of the sea water in the reservoir 5. Can be. However, if necessary to move the fresh water in the vapor state in the reservoir (5) may be provided with a separate blower (27).

Fresh water changed to the steam state in the reservoir (5) can be moved to the fresh water reservoir (7) of the ground by using the self-lift force and the pressure of the reservoir (5), for example, the hydropower generator module 10, solar External power generated by the generator 40 or the wind turbine 50 may be used to accelerate the movement of fresh water in the vapor state.

In addition, the condenser 29 has a water intake pipe and a drain pipe to condense the fresh water in the vapor state moving from the storage tank 5 to the fresh water storage tank 7 through a heat exchange method with sea water, which is separately taken in, to the fresh water storage tank 7. Means for storage.

The first desalination device module 20 moves seawater of the storage tank 5 by using geothermal heat or by supplying minimal power by environmentally friendly power generation such as solar power or wind power without supplying external power. Can be desalted.

4 is a view briefly showing the components of the second desalination device module 30 of the composite desalination device according to an embodiment of the present invention.

The hydraulic lift 6, the first pressurizing tank 33, and the second pressurizing tank 37 of the second desalination device module 30 supply pressure necessary for desalination of the reverse osmosis system.

The first pressurized tank 33 may be installed underground, for example, inside the machine room 1, and the second pressurized tank 37 may be installed on the ground adjacent to the desalination machine 39 of the reverse osmosis method, for example. Can be installed.

Pipes

31 or 35 connected to the first pressure tank 33 and the second pressure tank 37 may have

valves

32 or 34, respectively.

Reverse osmosis desalination system 39 is supplied with the pressure generated by the hydraulic lift (6), the first pressurizing tank 33 and the second pressurizing tank (37) when a predetermined level or more pressure is applied to the seawater in the reverse osmosis method It is a desalination means of reverse osmosis that can desalination. To this end, the reverse osmosis desalination system 39 applies a known reverse osmosis technique.

Although not shown in the drawings, the seawater reservoir 5 may be implemented to have an opening (not shown), for example, at an upper portion thereof to open and close, for example, a by-product remaining in the reservoir 5 according to evaporation of seawater, for example. When salt or the like is stacked in a predetermined amount or more, for example, the hydraulic lift 6 is transferred to the top of the reservoir 5, and then, in an appropriate manner, such as a method of collecting and treating the upper opening (not shown) of the reservoir 5 by opening it. Can be processed.

Therefore, the desalination apparatus according to the embodiment of the present invention overcomes the characteristics of renewable energy sources intermittently generated according to the conditions of the external natural environment, and to support the hydroelectric power generation apparatus capable of producing stable power only when the storage space is secured underground. It can be used as an auxiliary means.

In addition, the second desalination device module 30 transfers the seawater stored in the storage tank 5 together with the first desalination device module 20 to enable continuous hydropower generation, and at the same time, to enable the desalination of the transferred seawater. Devices that implement this.

In addition, the first and second

desalination device modules

20 and 30 have a very small amount of energy required for freshwater production, unlike conventional technologies for producing freshwater, thereby producing cost-effective freshwater.

The complex power generation and desalination system according to the present invention can achieve efficient energy production and desalination simultaneously from the perspective of the whole system through the convergence between technologies that can be matched in terms of energy conversion rather than the production of fresh water versus simple energy input. Provide multiple energy utilization technologies.

5 is a view briefly showing an example of the components of the seawater reservoir 5 according to an embodiment of the present invention.

Referring to FIG. 5, the seawater reservoir 5 according to an embodiment of the present invention may be applied to a single reservoir system or to a plurality of reservoir systems.

When applied to a plurality of reservoir systems, referring to the drawings, the pressure generated in each reservoir 5 is introduced into the first pressurizing tank 33 and the second pressurizing tank 25 and then reverse osmosis desalination system ( 39) can be supplied for desalination of seawater by reverse osmosis.

Although not shown in the drawings when applied to a plurality of reservoir systems, the first and / or second heaters 21 and / or 23 of the first desalination device module 20 are applied to each reservoir 5, and each The fresh water in the vapor state through the pipe 25 may be moved or integrated inflow into one pipe (25).

Therefore, it is possible to secure a sufficient amount of seawater for desalination of the seawater by reverse osmosis with sufficient inflow of seawater for hydropower generation.

According to the present invention can use infinite sea water, it can solve the problems such as loss due to evaporation that can occur when water is stored for a long time compared to the existing desalination method.

In addition, if only the capacity of the storage tank is secured, it is possible to secure stable power through small-scale power generation using potential energy at any time, and if necessary, it can be used as evaporation power for desalination. Can be.

In addition, major facilities can be installed and operated in the basement to solve the difficulty of securing ground.

Due to the nature of power generation using seawater, the utilization of offshore wind resources can be further increased because it is located on the coast, and thus can serve as a power energy generation and storage source that can solve the problems of intermittent renewable energy sources. .

In addition, operating costs and economics can be improved through power generation using multiple energy sources. That is, in the potential energy circulation process, for example, securing a storage capacity according to the evaporation of sea water, achieving simultaneous desalination, power generation through hydropower generation, and securing the operating pressure of the desalination system of the reverse osmosis method using the stored seawater load The system configuration that can be used for the purpose can greatly improve the overall system operation efficiency and at the same time contribute to the cost effective economics.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more.

In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be included, unless otherwise stated, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

[Description of the code]

10: power generation unit module 20: first desalination unit module

30: second desalination device module 5: reservoir

Claims

At least one seawater storage tank installed below a predetermined depth from the sea surface to store seawater collected through a water intake;

A power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe;

A first desalination device module for evaporating the seawater stored in the storage tank to transfer freshwater in a vapor state to a freshwater storage tank through a pipe to desalination; And

Desalination means for desalination of seawater by reverse osmosis using first and second pressurized tanks for supplying pressure using the pressure of seawater stored in the reservoir and the pressure supplied from the first and second pressurized tanks A composite power generation and desalination system comprising; a second desalination device module comprising.
The method of claim 1,

The power generation module is a composite power generation and desalination system, characterized in that installed in the machine room is installed in the basement above a certain depth from the sea surface.
The method of claim 1,

The power generation module includes a plurality of generator units, which are installed in a plurality of different positions.
The method of claim 1,

The intake pipe is a composite power generation and desalination system, characterized in that vertically designed over a certain length.
The method of claim 1,

And a divider for accumulating or distributing power generated by the generator module.
The method of claim 1,

The first desalination device module is a composite power generation and desalination system, characterized in that it comprises a heating means for heating the seawater in the reservoir through heat exchange with seawater using geothermal heat.
The method of claim 1,

The first desalination device module is a composite power generation and desalination, characterized in that it comprises a heating means for heating up the seawater in the reservoir using the power generated through at least one of the power generation module, photovoltaic power generation and wind power generation. system.
The method of claim 1,

The first desalination device module, the combined power generation and desalination system further comprises a blower is installed for the transfer of fresh water in the vapor state is transferred through the pipe.
The method of claim 1,

The first desalination device module, the combined power generation and desalination system further comprises a condensation means for condensing the fresh water in the vapor state transferred through the pipe.
The method of claim 1,

In the second desalination device module, the first pressurized tank is installed near the reservoir and the second pressurized tank is installed near the desalination means.
The method of claim 1,

The seawater reservoir is a combined power generation and desalination system, characterized in that it comprises a hydraulic lift.
The method of claim 11,

The seawater storage tank has a combined power generation and desalination system, characterized in that it comprises an opening for removing by-products generated by the evaporation of seawater using the hydraulic lift.
At least one seawater storage tank installed below a predetermined depth from the sea surface to store seawater collected through a water intake;

A power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe; And

Desalination device module for evaporating the seawater stored in the reservoir using the power generated by at least one of geothermal or power generator module, wind power or solar light to transfer the fresh water in the vapor state to the freshwater reservoir through the pipe to desalination; Including complex power generation and desalination systems.
The method of claim 13,

The desalination device module is the storage tank using the power generated by at least one of the heating unit and the generator module, the wind power or the solar power to heat up the seawater in the reservoir through heat exchange of seawater using geothermal heat. Combined power generation and desalination system, characterized in that it comprises a heating means for raising the seawater in the.
The method of claim 13,

The desalination device module, the composite power generation and desalination system further comprises a blower is installed for the transfer of fresh water in the vapor state is transferred through the pipe.
The method of claim 13,

The desalination device module further comprises a condensation means for condensing the fresh water in the vapor state transferred through the pipe.
The method of claim 13,

Desalination means for desalination of seawater by reverse osmosis using first and second pressurized tanks for supplying pressure using the pressure of seawater stored in the reservoir and the pressure supplied from the first and second pressurized tanks Complex power generation and desalination system further comprises a desalination device module comprising.
At least one seawater storage tank installed below a predetermined depth from the sea surface to store seawater collected through a water intake; And

And a power generation device module including power generation means for generating electric power using potential energy of the intake pipe for transferring the sea water to the sea water storage tank and the sea water transferred along the intake pipe.
The method of claim 18,

Desalination device module for evaporating the seawater stored in the reservoir using the power generated by at least one of geothermal or power generator module, wind power or solar light to transfer the fresh water in the vapor state to the freshwater reservoir through the pipe to desalination; Complex power generation and desalination system further comprising.
The method of claim 18,

Desalination means for desalination of seawater by reverse osmosis using first and second pressurized tanks for supplying pressure using the pressure of seawater stored in the reservoir and the pressure supplied from the first and second pressurized tanks Complex power generation and desalination system further comprises a desalination device module comprising.
At least one seawater storage tank installed below a predetermined depth from the sea surface to store seawater collected through a water intake;

A power generation device module including power generation means for generating electric power by using the intake pipe for transferring the sea water to the sea water storage tank and the potential energy of the sea water transferred along the water intake pipe; And

Desalination means for desalination of seawater by reverse osmosis using first and second pressurized tanks for supplying pressure using the pressure of seawater stored in the reservoir and the pressure supplied from the first and second pressurized tanks Complex power generation and desalination system comprising a desalination device module comprising.
The method of claim 21,

Desalination device module for evaporating the seawater stored in the reservoir using the power generated by at least one of geothermal or power generator module, wind power or solar light to transfer the fresh water in the vapor state to the freshwater reservoir through the pipe to desalination; Complex power generation and desalination system further comprising.