KR102280405B1 - Extraction system and extraction method of hydrogen included liquid organic hydrogen carrier by using wasted heat of high temperature fuel cell - Google Patents

Abstract

It is an object of the present invention to provide a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell that extracts hydrogen from LOHC using waste heat generated when electricity is generated from a fuel cell.
In order to achieve the above object, according to the present invention, there is provided a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell, comprising: a fuel cell receiving hydrogen and oxygen to generate electricity and water; a heat source generator for generating steam or a heat source using waste heat generated when the fuel cell generates electricity; and a dehydrogenation reaction unit for performing dehydrogenation for extracting hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using steam or a heat source generated by the heat source generating unit.

Description

A system and method for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell

The present invention relates to a method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell, and more particularly, a system for extracting hydrogen contained in LOHC using waste heat generated when electricity is generated in a fuel cell. is about

Recently, fuels of ships are changing due to environmental regulations related to NOx, SOx and CO _{2 .}

In other words, there is a trend to change from HFO (Heavy Fuel Oil) and MDO (Marine Diesel Oil) to LNG (Liquefied Natural Gas).

However, even if LNG is used as a fuel, _{it is difficult to satisfy regulations related to CO 2} emission (a fuel economy index for ship manufacturing) that will be strengthened in the future.

Here, the ship manufacturing fuel efficiency index (EEDI; Energy Efficiency Design Index) is an index indicating fuel efficiency and is the amount of _{CO 2 emitted when transporting 1 ton of cargo for 1 sea mile.}

In particular, EEDI Phase 3 (30% reduction) will be applied as a fuel economy index for ship manufacturing from 2025.

For this reason, a lot of research on hydrogen fuel cell ships using hydrogen, which is an eco-friendly energy, is being conducted at home and abroad.

There are mainly two methods of storing hydrogen in a hydrogen fuel cell vessel: gas storage and liquid storage.

The gas storage method stores hydrogen in a gaseous state by pressurizing it at a high pressure.

Types are classified according to the material of the storage container and the method of strengthening the composite material, and the storage capacity increases as the pressure increases.

In the gas (pressurized hydrogen) storage method, hydrogen is pressurized to 200 bar or more and stored in a pressure vessel of a hydrogen fuel cell vessel, and a metal or a composite material is used as a material of the pressure vessel.

The use of pressure vessels above 400 bar using carbon fiber is increasing.

In addition, the liquid storage method liquefies and stores gaseous hydrogen.

Compared to the gas storage method, it has a high storage efficiency (800 times that of gaseous hydrogen at atmospheric pressure and atmospheric temperature).

The liquid (liquid hydrogen) storage method liquefies hydrogen at -253 ° C and stores it in a cryogenic storage vessel of a hydrogen fuel cell vessel.

However, even if pressurized hydrogen is pressurized over 200 bar, the density is still low, so a lot of space is required to store the pressurized hydrogen.

In addition, liquid hydrogen requires a small space to store liquid hydrogen due to its high density, but a lot of energy is consumed for liquefaction of hydrogen and an expensive cryogenic storage container is required to store liquid hydrogen.

In addition, the treatment of BOG (Boil-off Gas) generated during storage of liquid hydrogen should also be considered.

Therefore, when hydrogen is stored using a Liquid Organic Hydrogen Carrier (LOHC), hydrogen can be efficiently and safely stored.

Since LOHC is in a liquid state under atmospheric conditions, it can be stored in a general storage container, and loading and unloading are convenient.

And the density is higher than hydrogen pressurized to 700 bar, so less space is required, and it is safe due to its non-flammability.

However, thermal energy is required to dehydrogenate hydrogen in LOHC.

However, heat energy is generated when electricity is produced in a fuel cell of a hydrogen fuel cell ship.

As described above, if the thermal energy generated from the fuel cell is used in the process of separating hydrogen from the LOHC, efficiency can be increased.

Therefore, there is an urgent need for a method for using the LOHC to store hydrogen in a hydrogen fuel cell vessel and to receive thermal energy required to separate hydrogen from the LOHC stored in the vessel from the fuel cell.

Republic of Korea Patent Publication No. 10-2018-0094990 (published on August 24, 2018)

It is an object of the present invention to solve the problems of the prior art as described above. Extract hydrogen contained in LOHC using waste heat of a high-temperature fuel cell that extracts hydrogen from LOHC using waste heat generated when electricity is generated in the fuel cell. To provide a system and method for

In order to achieve the above object, a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention is a liquid organic hydrogen carrier (LOHC) using waste heat generated when electricity is generated in a fuel cell. It is characterized in that hydrogen is extracted from

In order to achieve the above object, a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention comprises: a fuel cell receiving hydrogen and oxygen to generate electricity and water; a heat source generator for generating steam or a heat source using waste heat generated when the fuel cell generates electricity; and a dehydrogenation reaction unit for performing dehydrogenation to extract hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using steam or a heat source generated by the heat source generating unit.

In addition, the system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention includes a first storage area in which a fluid containing hydrogen is accommodated, and a second storage area in which a fluid not containing hydrogen is accommodated. It is characterized in that the storage area further comprises a hydrogen storage unit separated from each other.

In addition, in the system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention, the dehydrogenation unit is supplied with the fluid containing the hydrogen contained in the first storage region to receive the catalyst Hydrogen is extracted through dehydrogenation, and the fluid containing no hydrogen is discharged to the second storage area.

In addition, in the system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention, the dehydrogenation unit includes, when dehydrogenating from the hydrogen-containing fluid, reaction parameters of 1 bar and 300° C. And, it is characterized in that 6.2 wt% of hydrogen is extracted with a heat requirement of 72 KJ per 1 mol of hydrogen.

In addition, in the system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention, electricity generated by the fuel cell drives a propeller of a ship.

In order to achieve the above object, a vessel for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention includes: a fuel tank for storing hydrogen; a fuel supply unit supplying the hydrogen; a fuel cell for generating electric power using the hydrogen; a power management unit for managing the power; a thruster for propelling a ship using the electric power; and a control unit for controlling the thruster.

In order to achieve the above object, a method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention is a liquid organic hydrogen carrier (LOHC) using waste heat generated when electricity is generated in a fuel cell. It is characterized in that hydrogen is extracted from

In order to achieve the above object, a method for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention comprises: a first step (S100) of receiving a fluid containing hydrogen from a hydrogen storage unit; A second step (S200) of extracting hydrogen by dehydrogenating the fluid containing the hydrogen by the dehydrogenation unit by the heating unit and the catalyst; a third step (S300) of generating electricity by the fuel cell supplied with the extracted hydrogen and oxygen; a fourth step (S400) in which a heat source generator generates steam or a heat source using waste heat generated when the fuel cell generates electricity; and a fifth step (S500) of performing dehydrogenation in which the dehydrogenation unit extracts hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using the generated steam or heat source.

In addition, in the method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention, the second step (S200) to the fifth step (S500) are repeatedly performed to repeatedly generate the electricity. and, in the first time, the dehydrogenation unit dehydrogenates the fluid containing the hydrogen by heating the heating unit to extract hydrogen, and from the second time, the dehydrogenation unit uses the waste heat to produce a fluid containing the hydrogen It is characterized in that hydrogen is repeatedly extracted by dehydrogenation.

In addition, in the method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention, the dehydrogenation unit includes, when dehydrogenating from the hydrogen-containing fluid, reaction parameters of 1 bar and 300° C. And, it is characterized in that 6.2 wt% of hydrogen is extracted with a heat requirement of 72 KJ per 1 mol of hydrogen.

Specific details of other embodiments are included in "Details for carrying out the invention" and the accompanying "drawings".

Advantages and/or features of the present invention, and methods for achieving them, will become apparent with reference to the various embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may also be implemented in a variety of different forms, and each embodiment disclosed herein only makes the disclosure of the present invention complete, and the present invention It is provided to fully inform those of ordinary skill in the art to which the scope of the present invention belongs, and it should be understood that the present invention is only defined by the scope of each of the claims.

According to the present invention, there is an effect of extracting hydrogen contained in LOHC by using waste heat generated when electricity is generated in a fuel cell.

1 is a block diagram showing the overall configuration of a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.
2 is a block diagram showing the overall configuration of a hydrogen fuel vessel for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.
3 is a view showing conditions of dehydrogenation and hydrogenation in a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.
4 is a flowchart illustrating an overall flow of a method for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.

Before describing the present invention in detail, the terms or words used herein should not be construed as being unconditionally limited to their ordinary or dictionary meanings, and in order for the inventor of the present invention to describe his invention in the best way It should be understood that the concepts of various terms can be appropriately defined and used, and further, these terms or words should be interpreted as meanings and concepts consistent with the technical idea of the present invention.

That is, the terms used herein are only used to describe preferred embodiments of the present invention, and are not used for the purpose of specifically limiting the content of the present invention, and these terms represent various possibilities of the present invention. It should be understood that the term has been defined with consideration in mind.

Also, in the present specification, it should be understood that, unless the context clearly indicates otherwise, the expression in the singular may include a plurality of expressions, and even if it is similarly expressed in plural, it should be understood that the meaning of the singular may be included. .

In the case where it is stated throughout this specification that a component "includes" another component, it does not exclude any other component, but further includes any other component unless otherwise stated. It could mean that you can.

Furthermore, when it is described that a component is "exists in or is connected to" of another component, this component may be directly connected to or installed in contact with another component, and a certain It may be installed spaced apart by a distance, and in the case of being installed spaced apart by a certain distance, a third component or means for fixing or connecting the corresponding component to another component may exist, and now It should be noted that the description of the components or means of 3 may be omitted.

On the other hand, when it is described that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the third element or means does not exist.

Similarly, other expressions describing the relationship between components, such as "between" and "immediately between", or "neighboring to" and "directly adjacent to", have the same meaning. should be interpreted as

In addition, if terms such as "one side", "the other side", "one side", "other side", "first", "second" are used in this specification, with respect to one component, this one component is It is used to be clearly distinguished from other components, and it should be understood that the meaning of the component is not limitedly used by such terms.

In addition, in the present specification, terms related to positions such as "upper", "lower", "left", and "right", if used, should be understood as indicating a relative position in the drawing with respect to the corresponding component, Unless an absolute position is specified with respect to their position, these position-related terms should not be construed as referring to an absolute position.

In addition, in this specification, in specifying the reference numerals for each component of each drawing, the same component has the same reference number even if the component is shown in different drawings, that is, the same reference is made throughout the specification. Symbols indicate identical components.

In the drawings attached to this specification, the size, position, coupling relationship, etc. of each component constituting the present invention are partially exaggerated, reduced, or omitted for convenience of explanation or in order to sufficiently clearly convey the spirit of the present invention. may be described, and therefore the proportion or scale may not be exact.

In addition, in the following, in describing the present invention, a detailed description of a configuration determined that may unnecessarily obscure the subject matter of the present invention, for example, a detailed description of a known technology including the prior art may be omitted.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the related drawings.

1 is a block diagram showing the overall configuration of a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.

The system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention is an invention idea of extracting hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using waste heat generated when electricity is generated from a fuel cell have

This will be described in more detail.

A system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention includes a hydrogen storage unit 100, a dehydrogenation reaction unit 200, a fuel cell 300, and a heat source generating unit ( 400).

The hydrogen storage unit 100 performs a function of storing hydrogen using LOHC.

As such, when the hydrogen storage unit 100 stores hydrogen using a Liquid Organic Hydrogen Carrier (LOHC), it is cheaper, safer, and technically easier to handle than the conventional method.

The dehydrogenation unit 200 performs dehydrogenation by extracting hydrogen from a liquid organic hydrogen carrier (LOHC) using steam or a heat source generated by the heat source generating unit 400 .

In more detail, the dehydrogenation unit 200 generates hydrogen from a Liquid Organic Hydrogen Carrier (LOHC) containing hydrogen using steam or a heat source generated using waste heat generated when electricity is generated in the fuel cell 300 . will be extracted

The fuel cell 300 serves to generate electricity and water by receiving hydrogen supplied from the dehydrogenation unit 200 and oxygen in the atmosphere.

In more detail, the fuel cell 300 is a future power source that generates electricity by chemically reacting hydrogen with oxygen in the air.

In general, electrolysis of water decomposes into hydrogen and oxygen.

Conversely, hydrogen and oxygen combine to make water, and the energy generated at this time can be converted into electricity.

The fuel cell 300 uses this principle.

The general configuration of the fuel cell 300 is composed of two electrode rods adhered to each other around an electrolytic material, and through an electrochemical reaction when oxygen in the air passes through one electrode and hydrogen passes through the other electrode, electricity, water, and The principle of generating heat.

Although it is similar to a battery in that it generates electricity by a chemical reaction, the fuel cell 300 does not require charging because it receives hydrogen and oxygen, which are reactive materials, from the outside, so unlike a battery, electricity is continuously supplied as long as fuel is supplied. generate

In addition, since energy is generated without a combustion reaction of fuel, there is no emission of toxic pollutants such as sulfur and nitrogen oxides, unlike conventional internal combustion engines, and it is environmentally friendly because carbon dioxide emission can be dramatically reduced.

Since the fuel cell 300 does not have a separate driving unit, there is no noise, and compared to other energy sources, the fuel cell 300 also has an energy efficiency of 50%, which is higher than that of an internal combustion engine by 30%.

Unlike primary batteries that are used and discarded once or secondary batteries that can be recharged multiple times, it is a low-pollution and high-efficiency next-generation energy source that can be used permanently if the fuel cartridge is continuously replaced without charging a separate power source.

The heat source generator 400 serves to generate steam or a heat source using waste heat generated when the fuel cell 300 generates electricity.

The hydrogen storage unit 100 and the dehydrogenation unit 200 form a single circulation structure, and the dehydrogenation unit 200 , the fuel cell 300 , and the heat source generating unit 400 form a two circulation structure.

That is, through the one-cycle structure, the dehydrogenation reaction unit 200 receives a fluid containing hydrogen from the hydrogen storage unit 100 through the LOHC, and repeatedly dehydrogenates it using the waste heat of the two-cycle structure to extract hydrogen. do.

In addition, through the two-cycle structure, the dehydrogenation unit 200 repeatedly supplies hydrogen extracted through dehydrogenation to the fuel cell 300 , and the fuel cell 300 is repeatedly supplied with hydrogen by the dehydrogenation unit 200 . ) repeatedly generates electricity.

At this time, the heat source generator 400 repeatedly generates steam or a heat source using waste heat generated whenever the fuel cell 300 repeatedly generates electricity, and the steam or heat source repeatedly generated in this way is dehydrogenated. The reaction unit 200 is used as a heat source for dehydrogenating a fluid containing hydrogen supplied from the LOHC through a single circulation structure.

As described above, the fuel cell 300 repeatedly generates electricity by the repeated operations of the one-cycle structure and the two-cycle structure, and the generated electricity can be used as a power source for a moving object such as a vehicle or a ship.

In addition, the hydrogen storage unit 100 of the system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention includes a first storage region 110 in which a fluid containing hydrogen is accommodated, and hydrogen. The second storage regions 120 in which the fluid containing no fluid is accommodated are separated from each other.

That is, the integrally formed hydrogen storage unit 100 may separate the first storage region 110 and the second storage region 120 from the inside by a separator or a separator, but is not limited thereto. The unit 100 may include the first storage area 110 and the second storage area 120 formed by separate separation means, respectively.

The first storage region 110 and the second storage region 120 of the hydrogen storage unit 100 perform the following roles.

That is, in the system for extracting hydrogen contained in LOHC by using the waste heat of the high-temperature fuel cell according to the present invention, the dehydrogenation unit 200 is a fluid containing hydrogen accommodated in the first storage region 110 . Hydrogen is extracted by dehydrogenation through heat and catalyst.

When hydrogen is extracted through dehydrogenation in this way, the fluid not containing hydrogen is discharged from the dehydrogenation reaction unit 200 to the second storage region 120 .

Next, FIG. 2 is a block diagram illustrating the overall configuration of a hydrogen fuel vessel for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.

Referring to FIG. 2 , an example in which a system for extracting hydrogen included in LOHC using waste heat of a high-temperature fuel cell according to the present invention is applied to a hydrogen fuel cell can be seen.

A hydrogen fuel vessel extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell includes a fuel tank 10 , a fuel supply unit 20 , a fuel cell 30 , a power management unit 40 , and a thruster. 50 and a control unit 60 .

The fuel tank 10 serves to store hydrogen.

The fuel supply unit 20 serves to supply hydrogen stored in the fuel tank 10 , and may have a configuration in which the LOHC and the dehydrogenation unit are combined.

The fuel cell 30 serves to generate electric power using hydrogen extracted by dehydrogenation of the dehydrogenation unit.

The power management unit 40 serves to manage power generated by the fuel cell 30 .

The thruster 50 serves to propel the vessel using the electric power generated by the fuel cell 30 , and for example, may serve to drive the propeller of the vessel.

The control unit 60 serves to control the thruster.

Of course, the control unit 60 may serve to control other functions of the vessel as well.

3 is a view showing conditions of dehydrogenation and hydrogenation in a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.

The left side of FIG. 3 shows a hydrogenated carrier, and the right side of FIG. 3 shows a dehydrogenated carrier.

That is, dehydrogenation proceeds from the left to the right of FIG. 3 , and hydrogenation proceeds from the right to the left of FIG. 3 .

The dehydrogenation reaction unit 200 of a system for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention includes reaction parameters of 1 bar and 300° C. and , extract 6.2 wt% of hydrogen with a heat requirement of 72 KJ per 1 mol of hydrogen.

In addition, in order to liquefy the dehydrogenated hydrogen and store it in the hydrogen storage unit, 6.2 wt% of hydrogen is stored due to the reaction parameters of 50 bar and 150 °C and the heat requirement of 72 KJ per 1 mol of hydrogen.

In the present invention, a specific LOHC value is limited as described above for ease of explanation, but the present invention is not limited thereto, and various types of LOHC values may be included.

As described above, in the system for extracting hydrogen contained in the LOHC using the waste heat of the high-temperature fuel cell according to the present invention, the LOHC has good efficiency, is safe from explosion, is technically easy to handle, and is inexpensive. .

4 is a flowchart illustrating an overall flow of a method for extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention.

The method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention is an invention of extracting hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using waste heat generated when electricity is generated from a fuel cell have an idea

To describe in more detail, referring to FIG. 4 , the method of extracting hydrogen included in LOHC using waste heat of a high-temperature fuel cell according to the present invention has a configuration of a total of five steps.

The first step ( S100 ) is a step of supplying a fluid containing hydrogen from the hydrogen storage unit 100 to the dehydrogenation reaction unit 200 .

The second step ( S200 ) is a step in which the dehydrogenation reaction unit 200 dehydrogenates a fluid containing hydrogen by heating and a catalyst of the heating unit to extract hydrogen.

The third step ( S300 ) is a step in which the fuel cell 300 supplied with the extracted hydrogen and oxygen generates electricity.

The fourth step ( S400 ) is a step in which the heat source generator 400 generates steam or a heat source using waste heat generated when the fuel cell 300 generates electricity.

The fifth step ( S500 ) is a step in which the dehydrogenation unit 200 extracts hydrogen from a Liquid Organic Hydrogen Carrier (LOHC) using the generated steam or heat source to perform dehydrogenation.

In particular, in the method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell according to the present invention, electricity is repeatedly generated by repeatedly performing the second step (S200) to the fifth step (S500). It can be used as a power source for devices that require power.

At this time, in the first time, the dehydrogenation reaction unit 200 dehydrogenates a fluid containing hydrogen by heating a heating unit (eg, a heater, etc.) to extract hydrogen.

From the second time, that is, from the second time or more, the dehydrogenation unit 200 dehydrogenates a fluid containing hydrogen by using waste heat generated when the fuel cell 300 generates electricity, thereby repeatedly extracting hydrogen.

On the other hand, as described above, when the dehydrogenation reaction unit 200 dehydrogenates from a fluid containing hydrogen, 6.2 wt% of hydrogen by reaction parameters of 1 bar and 300 °C and a heat requirement of 72 KJ per 1 mol of hydrogen to extract

In the present invention, a specific LOHC value is limited as described above for ease of explanation, but the present invention is not limited thereto, and various types of LOHC values may be included.

As described above, according to the present invention, there is an effect of extracting hydrogen from the LOHC using waste heat generated when electricity is generated in the fuel cell.

As mentioned above, although several preferred embodiments of the present invention have been described with some examples, the descriptions of various various embodiments described in the "Specific Contents for Carrying Out the Invention" item are merely exemplary, and the present invention Those of ordinary skill in the art will understand well that the present invention can be practiced with various modifications or equivalents to the present invention from the above description.

In addition, since the present invention can be implemented in various other forms, the present invention is not limited by the above description, and the above description is for the purpose of completing the disclosure of the present invention, and it is common in the technical field to which the present invention pertains. It should be understood that this is only provided to fully inform those with knowledge of the scope of the present invention, and that the present invention is only defined by each of the claims.

10: fuel tank
20: fuel supply
30: fuel cell
40: power management unit
50: thruster
60: control unit
100: hydrogen storage unit
110: first storage area
120: second storage area
200: dehydrogenation reaction unit
300: fuel cell
400: heat source generator

Claims (11)

delete a fuel cell that receives hydrogen and oxygen to generate electricity and water;
a heat source generator for generating steam or a heat source using waste heat generated when the fuel cell generates electricity; and
A dehydrogenation reaction unit for performing dehydrogenation to extract hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using steam or a heat source generated by the heat source generating unit;
The electricity generated by the fuel cell drives the propeller of the ship,
A hydrogen storage unit in which a first storage area in which a fluid containing hydrogen is accommodated and a second storage area in which a fluid that does not contain hydrogen is accommodated is separated from each other,
The dehydrogenation reaction unit,
receiving the fluid containing the hydrogen contained in the first storage region, dehydrogenating it through a catalyst to extract hydrogen, and discharging the fluid containing no hydrogen to the second storage region;
Upon dehydrogenation from the fluid containing the hydrogen,
Extracting 6.2 wt % of hydrogen with reaction parameters of 1 bar and 300 ° C and a heat requirement of 72 KJ per mol of hydrogen,
To liquefy the dehydrogenated fluid in the second storage region and store it in the first hydrogen storage unit as a hydrogenated fluid, 6.2 wt. Characterized in storing % of hydrogen,
A system that extracts hydrogen contained in LOHC using waste heat from a high-temperature fuel cell.
delete delete delete delete delete delete A first step of receiving a fluid containing hydrogen from the hydrogen storage unit (S100);
a second step (S200) of extracting hydrogen by dehydrogenating the fluid containing the hydrogen by the dehydrogenation reaction unit by the heating unit and the catalyst;
a third step (S300) of generating electricity by the fuel cell supplied with the extracted hydrogen and oxygen;
a fourth step (S400) in which a heat source generator generates steam or a heat source using waste heat generated when the fuel cell generates electricity; and
A fifth step (S500) of performing dehydrogenation in which the dehydrogenation unit extracts hydrogen from LOHC (Liquid Organic Hydrogen Carrier) using the generated steam or heat source;
The electricity generated by the fuel cell drives the propeller of the ship,
The second step (S200) to the fifth step (S500) are repeatedly performed to repeatedly generate the electricity,
The first time is to extract hydrogen by dehydrogenating the fluid containing the hydrogen by the dehydrogenation reaction unit by heating the heating unit,
From the second time, the dehydrogenation unit dehydrogenates the fluid containing the hydrogen using the waste heat to repeatedly extract hydrogen,
A hydrogen storage unit in which a first storage area in which a fluid containing hydrogen is accommodated and a second storage area in which a fluid that does not contain hydrogen is accommodated is separated from each other,
The dehydrogenation reaction unit,
receiving the fluid containing the hydrogen contained in the first storage region, dehydrogenating it through a catalyst to extract hydrogen, and discharging the fluid containing no hydrogen to the second storage region,
Upon dehydrogenation from the fluid containing the hydrogen,
Extracting 6.2 wt % of hydrogen with reaction parameters of 1 bar and 300 ° C and a heat requirement of 72 KJ per mol of hydrogen,
To liquefy the dehydrogenated fluid in the second storage zone and store it in the first hydrogen storage as a hydrogenated fluid, 6.2 wt. with reaction parameters of 50 bar and 150° C. and a heat demand of 72 KJ per mol of hydrogen Characterized in storing % of hydrogen,
A method of extracting hydrogen contained in LOHC using waste heat of a high-temperature fuel cell.
delete delete

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