JP3229202U - Power generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power generation system for generating electricity using hydrogen which realizes "suppression of global warming". A power generation system (1) has a generator (3) that generates electricity by rotating a turbine (2), and the turbine rotates with steam S generated by burning hydrogen to generate electricity with the generator. A hydrogen steam rotating unit 4 that rotates a turbine K2 that rotates with steam in an existing thermal power plant with steam generated by burning hydrogen may be retrofitted to the existing thermal power plant. [Selection diagram] Fig. 1

Description

The present invention relates to a power generation system that generates electricity using hydrogen.

Conventionally, a power control device such as a thermal power plant is known (Patent Document 1).
This power control device is a power control device that controls the power of a power plant including a generator, a renewable energy power generation device, and a power storage device, and is a power generation output efficiency control unit and a power storage device charge / discharge power command value. The power generation output efficiency control unit includes a transmission unit, and the power generation output efficiency control unit includes a generator output power receiving unit that receives the output power value of the generator and an output power value of the generator received by the generator output power receiving unit. And the target power value setting unit that sets the target value of the apparent internal load power value based on the preset target efficiency value, and the internal load power value that is the power consumed in the power plant. The in-house load power receiving unit that receives the above, the renewable energy output power receiving unit that receives the output power value of the renewable energy power generator, the target value of the apparent in-house load power value, and the in-house load power value. A power storage device charge / discharge power command value calculation unit that calculates a charge / discharge power command value of the power storage device based on the output power value of the renewable energy power generator, and the power storage device charge / discharge power command value. The transmission unit transmits the charge / discharge power command value of the power storage device to the power storage device.

JP-A-2017-28945

However, as described in paragraph 0079, the power control device described in Patent Document 1 is applied not only to a thermal power plant but also to, for example, a nuclear power plant, a thermal power plant, or the like. In some places, burning fossil fuels may emit carbon dioxide (CO ₂ ) and cause global warming, and in the case of nuclear power plants, radioactive contamination due to natural disasters such as earthquakes and tsunamis and accidents. There is a risk of.
Further, in the hydroelectric power plant described in Patent Document 1, although the potential energy of water flowing from a high place to a low place is used to turn a generator to generate electricity, a dam for storing water, a headrace pipe, etc. are constructed, which is extremely difficult. As well as increasing the scale, there are problems such as affecting the environment and ecosystem.

Therefore, an object of the present invention is to provide a power generation system capable of realizing "suppression of global warming" by generating power using hydrogen or the like.

The first feature of the power generation system 1 according to the present invention is that it generates power using hydrogen.

The second feature of the power generation system 1 according to the present invention is that, in addition to the above first feature, the power generation system has a generator that generates power by the rotation of a turbine, which is generated by burning hydrogen. The point is that it rotates with the steam and generates electricity with the generator.

The third feature of the power generation system 1 according to the present invention is, in addition to the above-mentioned second feature, the power generation system is the steam generated by burning the hydrogen in a turbine rotating with steam in an existing thermal power plant. The point is that the rotating hydrogen steam rotating part is retrofitted to the existing thermal power plant.

Due to these characteristics, unlike Patent Document 1, by generating electricity using hydrogen, for example, in the case of a thermal power plant, there is no need to burn fossil fuels, and naturally carbon dioxide and the like are not emitted, resulting in global warming. It is possible to suppress the risk of global warming (“control of global warming”). Moreover, in the case of a nuclear power plant, it is not necessary to fission uranium, plutonium, etc. in a nuclear reactor, and there is no risk of radioactive contamination due to natural disasters such as earthquakes and tsunamis, and accidents ("Radioactivity"). Prevention of contamination ").
At the same time, unlike hydroelectric power plants, there is no need to construct dams, headraces, etc., and there is no need to increase the scale (can be made compact), so the impact on the environment and ecosystem can be suppressed (“Environment”.・ Controlling the impact on the ecosystem ”).

Further, by rotating the turbine 2 with the steam S generated by burning hydrogen and generating electricity with the generator 3, in Patent Document 1 and the like, oil, coal, liquefied natural gas (LNG), etc. are used in the thermal power plant. In a nuclear power plant, water is heated by the heat generated when uranium, plutonium, etc. are split in a reactor containing water, and the steam generated at that time is used to generate electricity. Since the machine is rotated to generate electricity, there is a problem that the power generation efficiency deteriorates as much as the steam that heats the water is used.
However, since the steam S generated by burning hydrogen directly rotates the turbine 2 to generate electricity with the generator 3, the steam that heats the water is used as in between fossil fuels, uranium, and the turbine. It can be said that the power generation efficiency is improved by the amount that is not present.

Further, by retrofitting the hydrogen steam rotating unit 4 that rotates the turbine 2 with the steam S generated by burning hydrogen to the existing thermal power plant K, hydrogen can be produced while making the best use of the existing thermal power plant K. It can be said that the cost and work load of generating electricity by using it can be reduced.

According to the power generation system according to the present invention, "suppression of global warming" can be realized by generating power using hydrogen or the like.

It is a schematic diagram illustrating the power generation system according to the present invention, and can be said to exemplify a state in which a hydrogen steam rotating part is retrofitted to an existing thermal power plant. It is a schematic diagram which exemplifies an existing thermal power plant.

<Overall configuration of power generation system 1>
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 illustrates the power generation system 1 according to the present invention.

The power generation system 1 is a system that generates power using hydrogen.
The power generation system 1 may have any configuration as long as it uses hydrogen to generate power. For example, the power generation system 1 may have a turbine 2 and a generator 3 described later and burn hydrogen. The hydrogen steam rotating unit 4 described later may be retrofitted to the existing thermal power plant K.

Further, the power generation system 1 may have a tank for storing hydrogen, and this tank stores hydrogen in a gaseous state by compressing it at a high pressure, or stores hydrogen liquefied at an extremely low temperature or the like. Or gas hydrogen is stored and adsorbed in a predetermined alloy and stored, hydrogen is converted to another substance (for example, it is reacted with toluene to be converted to methylcyclohexane, or it is reacted with nitrogen to be converted to ammonia. ), And it may be stored in that state.
In addition, the power generation system 1 may have a fuel cell that does not have a turbine 2 or a generator 3 and generates electricity by reacting hydrogen with oxygen in the air without burning hydrogen.

To explain the fuel cell in detail, of the pair of electrodes with an electrolyte in between, hydrogen is supplied to one electrode and oxygen is supplied to the other electrode to form a chemical reaction (the reverse chemical reaction of electrolysis of water). To generate electricity and water without burning hydrogen (water is generated while generating electricity).
When the power generation system 1 uses a fuel cell, electricity is directly extracted by a chemical reaction with oxygen without burning hydrogen to generate electricity, so that energy conversion efficiency is improved and harmful substances such as carbon dioxide are not emitted.

In this way, the power generation system 1 can be said to be the last energy on earth that can generate power safely and securely because it can suppress global warming and reduce carbon dioxide by generating power using hydrogen.
Hereinafter, it is mainly described that the power generation system 1 has a turbine 2 and a generator 3 and burns hydrogen.

<Turbine 2>
As shown in FIG. 1, the turbine 2 applies a fluid to an impeller and converts the energy of the fluid into rotational motion to obtain power, and is provided in the power generation system 1 described above. It can be said that the impeller is a moving blade, a vane, and a rotor.
The turbine 2 may have any configuration as long as the fluid is applied to the impeller and the energy of the fluid is converted into rotational motion to obtain power, but the turbine 2 has an impeller (rotor) and a stator, and the stator has steam. As a stationary blade train to rectify, the rotor may function as a moving blade train that receives the flow of high-temperature and high-pressure steam and rotates.

The fluid that rotates the turbine 2 is not particularly limited, but for example, it is the water vapor (hydrogen energy gas) S itself generated by burning hydrogen, or other gas such as hydrogen or a mixed gas of hydrogen and LNG is burned. It may be steam J vaporized by the heat generated at the time.
It can be said that the turbine rotated by the steam S and J is a steam turbine, and in particular, the turbine rotated by hydrogen energy gas can be said to be a gas turbine.

In addition, the fluid for rotating the turbine 2 may be, for example, the combustion gas itself generated when a mixed gas of hydrogen and LNG or the like is burned. In this case, the turbine can be said to be a gas turbine. ..
The rotational force of the turbine 2 is transmitted to the generator 3 described later via the rotating shaft.

<Generator 3>
As shown in FIG. 1, the generator 3 is a device that generates electricity by the rotation of the turbine 2 described above, and is provided in the power generation system 1 described above. It can be said that the generator 3 is a dynamo.
The generator 3 may have any configuration as long as it can generate power by the rotation of the turbine 2. For example, the coil may be rotated in a magnetic field and electromagnetic induction may be applied to generate an electric current. The generator 3 may be either an AC generator or a DC generator.

In such a generator 3, the rotating shaft of the coil is coaxial with the rotating shaft of the turbine 2 described above, or a gear or the like is interposed between the rotating shafts of each other to generate electricity by the rotation of the turbine 2. Is also good.
The electric power output from the generator 3 may be distributed to factories, homes, etc. via a grid (commercial power grid), or may be used directly in factories, homes, etc. without going through the grid.

<Hydrogen steam rotating part 4>
As shown in FIG. 1, the hydrogen steam rotating unit 4 is a portion in which a turbine 2 rotated by steam J in an existing thermal power plant K described later is rotated by steam S generated by burning hydrogen H.
The hydrogen steam rotating unit 4 may be retrofitted to the existing thermal power plant K.

The hydrogen steam rotating unit 4 may have any configuration as long as the turbine 2 of the existing thermal power plant K can be rotated by the steam S generated by burning hydrogen. For example, hydrogen H and oxygen O are used. A combustor 4a that supplies and burns hydrogen H, a turbine 2 that is rotated by steam S generated by burning hydrogen from the combustor and is also provided in the existing thermal power plant K, and hydrogen are burned. It may have a condenser 4b that condenses the generated water vapor S (cools it into liquid water) and a circulator 4c that circulates the water vapor S or the like generated by burning hydrogen.
In addition to the water vapor S generated by burning hydrogen, the working medium (air or the like) S'may also circulate in the circulatory system 4c.

Further, the condenser 4b may have a tank 4d for taking out condensed water (condensed water) or storing condensed water.
Such a hydrogen steam rotating unit 4 may be retrofitted to the existing thermal power plant K.
The existing thermal power plant K will be described below.

<Existing thermal power plant K>
As shown in FIG. 2, the existing thermal power plant K is an already constructed thermal power plant, and the above-mentioned hydrogen steam rotating unit 4 can be retrofitted.
The configuration of the existing thermal power plant K is not particularly limited. For example, a boiler section K1 for burning fossil fuel N and a turbine (steam turbine) K2 rotated by steam J vaporized by combustion in the boiler section K1. It has a generator K3 that generates power by the rotation of the turbine K2, a condensing unit K4 that returns the vaporized water vapor J to liquid water, and a circulation unit K5 that circulates the liquid water and the vaporized water vapor J. Is also good.
It can be said that the reference numeral of the turbine K2 is 2, which is the same as that of the turbine 2 described above. Further, the turbine K2 may be a gas turbine as well as a steam turbine.

Here, the boiler unit K1 includes a boiler main body K1a that internally burns fossil fuel N, a fuel supply pipe K1b that supplies fossil fuel N to the boiler main body K1a, and an air supply pipe that supplies air A to the boiler main body K1a. It may have K1c and a discharge pipe K1d for discharging the combustion gas G generated by combustion in the boiler main body K1a.
In addition, in the boiler section K1, a chimney (not shown) that emits the combustion gas G from the discharge pipe K1d to the outside of the power plant, and nitrogen oxides in the combustion gas G before the combustion gas G is emitted from the chimney It may also have a filter (not shown) or the like for removing soot or the like.

Further, the condensate unit K4 is for cooling the condenser main body K4a that cools the vaporized water vapor J in the circulating unit K5 and returns it to liquid water, and the water vapor J vaporized in the condensate main body K4a. The intake port K4b that takes in liquid water (seawater, etc.) from the outside and the liquid water from the outside after returning the water vapor J vaporized in the condenser body K4a to the liquid water are discharged to the outside (sea, etc.). It may have a water outlet K4c.
Such an existing thermal power plant K may be retrofitted with the above-mentioned hydrogen steam rotating section 4 in place of the boiler section K1 and the circulation section K5, or in place of the boiler section K1 alone.

The "retrofitting" in the present invention can be said to be "replacement" because the existing boiler section K1 and circulation section K5 and the like in the thermal power plant K are removed and a hydrogen steam rotating section 4 is attached instead. ..
Further, the thermal power plant K after the above-mentioned hydrogen steam rotating unit 4 is retrofitted can be said to be a hydrogen power plant because it does not generate electricity by thermal power (combustion of fossil fuel or the like).

<Others>
The present invention is not limited to the above-described embodiment. The structure, shape, dimensions, etc. of each configuration or the whole of the power generation system 1 and the like can be appropriately changed according to the gist of the present invention.
The power generation system 1 is a combustion gas generated by burning a mixed gas in which hydrogen and LNG are confused in the existing thermal power plant K, and rotates a turbine in the existing thermal power plant K and a turbine for the mixed gas. , You may generate electricity with a generator.

In the power generation system 1, the turbine (gas turbine) is rotated by the combustion gas generated by burning hydrogen or a mixed gas of hydrogen and LNG to generate power by the generator, and the remaining heat after rotating the gas turbine. Water may be vaporized with energy, and the steam turbine may be rotated by the steam J generated by the vaporization to generate power with a generator.
In the power generation system 1, the hydrogen steam rotating part 4 was retrofitted in place of a part of the existing thermal power plant K (boiler part K1 and circulation part K5, etc.), but the newly installed turbine 2 and the generator 3 , The new turbine 2 may be rotated by the steam S generated by burning hydrogen, and the new generator 3 may generate electricity.

In the hydrogen steam rotating unit 4, as described above, the steam S generated by burning hydrogen in the circulator 4c and the working medium S'and the like circulate, and from the condenser 4b to the combustor 4a. It can be said that there is only the working medium S', but a compressor that compresses the working medium S'between the condenser 4b and the combustor 4a (an impeller that feeds the working medium S'to the combustor 4a, etc. (Not shown) may be provided.
When the compressor is an impeller, the rotation axis of the impeller of the compressor and the rotation axis of the impeller of the turbine 2 may be coaxial.

The power generation system of the present invention is not only used as a power generation system in a new power plant, but also retrofitted to an existing thermal power plant or an existing nuclear power plant, and other solar power plants, wind power plants, and biomass. Power plant, hydropower plant, geothermal power plant, solar heat utilization power plant, snow and ice heat utilization power plant, temperature difference heat utilization power plant, underground heat utilization power plant, ocean temperature difference power plant, wave power plant, tidal power plant , It can be widely used, such as used together with renewable energy power plants such as tidal current power plants (used in collaboration).
Further, the electric power generated by the power generation system of the present invention can be supplied to factories, commercial facilities (stores), public facilities, buildings, and homes.

1 Power generation system 2 Turbine 3 Generator 4 Hydrogen steam rotating part K Thermal power plant

The first feature of the power generation system 1 according to the present invention is a power generation system that uses hydrogen to generate power. The power generation system has a generator that generates power by rotating a turbine, and the turbine burns hydrogen. The point is that the generator rotates with the steam generated by the operation to generate electricity .

The second feature of the power generation system 1 according to the present invention is that, in addition to the first feature, the turbine is a turbine that rotates with steam in an existing thermal power plant, and the power generation system uses the turbine as described above. A hydrogen steam rotating section that rotates with steam generated by burning hydrogen is retrofitted to the existing thermal power plant .

A third feature of the power generation system 1 according to the present invention is a power generation system that uses hydrogen to generate power. The power generation system has a generator that generates power by rotating a turbine, and the turbine is liquefied with hydrogen. The point is that the generator rotates with the combustion gas generated when the mixed gas with the natural gas is burned to generate electricity .

Claims (3)

A power generation system that uses hydrogen to generate electricity. The power generation system has a generator that generates electricity by rotating a turbine.
The power generation system according to claim 1, wherein the turbine rotates with steam generated by burning hydrogen to generate power with the generator. According to claim 2, the power generation system has a hydrogen steam rotating section that rotates a turbine that rotates with steam in an existing thermal power plant with steam generated by burning hydrogen, which is retrofitted to the existing thermal power plant. The power generation system described.

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