Ammonia decomposition system and ammonia decomposition method

Abstract

An ammonia decomposition system according to an embodiment of the present disclosure includes: a decomposer that decomposes ammonia to generate hydrogen; a heating unit for heating the resolver; a fuel cell that reacts the hydrogen to supply in-cell power; a bypass line connecting a pipe connecting the resolver and the fuel cell and a pipe connecting the fuel cell and the heating unit; the sensing unit is used for sensing the internal temperature of the decomposer; and the control unit is used for receiving the internal temperature information of the resolver from the sensing unit. The control unit receives residual ammonia information inside the resolver and controls operation of the bypass line based on at least one of the temperature information and the residual ammonia information.

Description

Technical Field

[0001] The present invention relates to an ammonia decomposition system and an ammonia decomposition method. Background Art

[0002] In a mobile environment such as a ship or a dump truck, load changes may occur frequently. Therefore, when the feedback logic of the ammonia decomposition reaction in a facility environment such as a chemical plant is applied to the mobile environment as it is, the ammonia decomposition rate may decrease.

[0003] In particular, the ammonia decomposition reaction in a facility-scale environment may not be easy to control under load-following operating conditions such as sudden acceleration or deceleration of ships or dump trucks. This may cause a drop in the output of the entire system or a degradation in battery performance.

[0004] The process of producing hydrogen by decomposing ammonia is an endothermic reaction that requires a large amount of heat. When tracking a load in a ship or dump truck environment, if a large amount of ammonia flows in and the temperature inside the decomposer drops sharply, the endothermic reaction may occur at a relatively low temperature. As a result, the hydrogen conversion rate may decrease, and the amount of residual ammonia may also increase due to incomplete reaction. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] According to one embodiment of the present disclosure, an ammonia decomposition system with improved decomposition efficiency is provided.

[0007] According to one embodiment of the present disclosure, a method for decomposing ammonia with improved decomposition efficiency is provided.

[0008] By utilizing the ammonia decomposition system and the ammonia decomposition method according to one embodiment of the present disclosure, an environmentally friendly system capable of generating clean energy may be realized.

[0009] (II) Technical solution

[0010] According to an embodiment of the present disclosure, an ammonia decomposition system includes: a decomposer that decomposes ammonia to produce hydrogen; a heating unit that heats the decomposer; a fuel cell that reacts the hydrogen to generate electricity; a bypass line that connects a pipe connecting the decomposer and the fuel cell and a pipe connecting the fuel cell and the heating unit; a sensing unit that senses the internal temperature of the decomposer; and a control unit that receives the internal temperature information of the decomposer from the sensing unit, the control unit receives residual ammonia information inside the decomposer, and controls the operation of the bypass line based on at least one of the temperature information and the residual ammonia information.

[0011] In some embodiments, the bypass line may include: a hydrogen supply pipe; and a bypass valve to adjust the hydrogen flow of the hydrogen supply pipe. The control unit may be configured to control the operation of the bypass line to open the bypass valve when the internal temperature of the decomposer is lower than a preset temperature.

[0012] In some embodiments, the ammonia decomposition system may further include: an absorption unit that absorbs residual ammonia discharged from the decomposer. The absorption unit may be located between the exhaust pipe of the decomposer and the absorption pipe of the fuel cell. The exhaust pipe of the decomposer may be used as the absorption pipe of the absorption unit, and the absorption pipe of the fuel cell may be used as the exhaust pipe of the absorption unit. The bypass line may connect the exhaust pipe of the decomposer or the absorption pipe of the absorption unit and the exhaust pipe of the fuel cell, or the bypass line may connect the exhaust pipe of the absorption unit or the absorption pipe of the fuel cell and the exhaust pipe of the fuel cell.

[0013] In some embodiments, the control unit may be configured to control the operation of the bypass line to open the bypass valve when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount.

[0014] In some embodiments, the ammonia decomposition system may further include: a separation membrane that allows the hydrogen and nitrogen exhausted from the exhaust pipe of the decomposer and the hydrogen and nitrogen in the residual ammonia to permeate.

[0015] In some embodiments, the ammonia decomposition system may further include: a first valve to adjust the flow rate of ammonia flowing into the absorber pipe of the decomposer; and a second valve to adjust the flow rate of hydrogen, nitrogen and residual ammonia discharged from the discharge pipe of the decomposer.

[0016] In some embodiments, the control unit may be configured to control the pressure and increase the temperature inside the decomposer by closing at least one of the first valve and the second valve when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount.

[0017] In some embodiments, the ammonia decomposition system may further include: a pressurizing unit to adjust the pressure inside the decomposer.

[0018] In some embodiments, the control unit may be configured to increase the pressure inside the decomposer through the pressurizing unit when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount.

[0019] In the ammonia decomposition method according to an embodiment of the present disclosure, the decomposer internal temperature information is received from a sensing unit, the sensing unit is used to sense the internal temperature of the decomposer that decomposes ammonia to generate hydrogen. Residual ammonia information inside the decomposer is received. Based on at least one of the temperature information and the residual ammonia information, the operation of a bypass line is controlled, and the bypass line connects a pipe connecting the decomposer and a fuel cell and a pipe connecting the fuel cell and a heating unit.

[0020] (III) Beneficial effects

[0021] According to the above-described embodiments of the present disclosure, the ammonia decomposition system may include a bypass line between the decomposer and the absorber or between the absorber and the fuel cell, and control operation of the bypass line based on the decomposer internal temperature and the residual ammonia amount.

[0022] According to an exemplary embodiment, the ammonia decomposition system may promote an ammonia decomposition reaction inside the decomposer by using a valve of a bypass line, a valve of an absorption pipe or an exhaust pipe of the decomposer, a separation membrane adjacent to the exhaust pipe of the decomposer, and the like.

[0023] The effects of the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic block diagram of an ammonia decomposition system according to an exemplary embodiment.

[0025] Figure 2 is a schematic block diagram illustrating a configuration of an ammonia decomposition system according to an exemplary embodiment.

[0026] Figure 3 is a schematic flow chart for explaining an ammonia decomposition method through a bypass line in a load following state according to an exemplary embodiment.

[0027] Figure 4 is a flowchart for explaining a method of decomposing ammonia through a bypass line in a load following state according to an exemplary embodiment.

[0028] Figure 5a and Figure 5b is a block diagram illustrating an exemplary position change of a bypass line.

[0029] Figure 6 is a block diagram of an ammonia decomposition system including a separation membrane according to an exemplary embodiment.

[0030] Figure 7 is a block diagram of an ammonia decomposition system that can open and close a valve according to an exemplary embodiment. DETAILED DESCRIPTION

[0031] In the present disclosure, the same reference numerals refer to the same components. Not all elements of the embodiments are described in the present disclosure, and general contents of the technical field to which the present disclosure belongs or contents repeated between embodiments are omitted. The terms "unit, module, component, block" used in the specification can be implemented by software or hardware, and according to the embodiment, multiple "units, modules, components, blocks" can be implemented by a single component, or one "unit, module, component, block" can include multiple components.

[0032] Throughout the specification, when one part is referred to as being “connected” to another part, this includes not only the case of being directly connected but also the case of being indirectly connected including being connected through a wireless communication network.

[0033] In addition, when a section is referred to as “comprising” a component, unless specifically stated otherwise, it means that other components may be further included, rather than excluding other components.

[0034] Throughout the specification, when a member is located “on” another member, this includes not only a case where one member is in contact with another member but also a case where other members exist between the two members.

[0035] Terms such as “first”, “second”, etc. are used to distinguish one component from another component, and the components are not limited by the above terms.

[0036] Unless the context clearly indicates otherwise, an expression in the singular includes an expression in the plural.

[0037] The reference numerals of the steps are used for convenience of description and do not indicate the order of the steps. Unless the context clearly indicates a specific order, the steps may be performed in an order different from the specified order.

[0038] Hereinafter, the working principle and embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0039] In this specification, "device according to the present disclosure" includes all kinds of devices that can perform computing and provide results to users. For example, a device according to an embodiment of the present disclosure may include a computer, a server device, and a portable terminal, or any form thereof.

[0040] Here, the computer may include, for example, a notebook computer equipped with a web browser, a desktop computer, a laptop computer, a tablet PC, a slate PC, etc.

[0041] The server device is a server that processes information by communicating with an external device, and may include an application server, a computing server, a database server, a file server, a game server, a mail server, a proxy server, a network server, etc.

[0042] The portable terminal is, for example, a wireless communication device that ensures portability and mobility, and may include all types of handheld wireless communication devices such as PCS (Personal Communication System), GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), WiBro (Wireless Broadband Internet), terminals, smart phones, and wearable devices such as watches, rings, bracelets, anklets, necklaces, glasses, contact lenses, or head-mounted devices (HMD).

[0043] Figure 1 is a schematic block diagram of an ammonia decomposition system according to an exemplary embodiment. According to an exemplary embodiment, the ammonia decomposition system may be implemented by a bypass ammonia decomposition system.

[0044] Reference Figure 1 The ammonia decomposition system 10 includes a decomposer (Cracker) 100, a fuel cell 200, a bypass line 300, a heating unit 400, an absorption unit 510 and a sensor unit 600. Each configuration / node can send and receive data with other configurations / nodes. Each node can be connected through a network.

[0045] The ammonia decomposition system 10 may receive ammonia (NH 3) and decomposes. If the temperature inside the decomposer 100 temporarily decreases, the ammonia decomposition rate may decrease due to deactivation or degradation of the catalyst inside the decomposer 100. Therefore, the amount of residual ammonia in the decomposer 100 increases relatively, which may cause the ammonia decomposition rate to decrease again.

[0046] The decomposer 100 can receive ammonia and produce hydrogen (H 2 ), nitrogen (N 2 ) and ammonia (NH 3 ) as a decomposition product. Then, each fluid absorbed by the absorption unit 510 can be supplied to the fuel cell 200 and used for power supply of the battery. According to an exemplary embodiment, the ammonia decomposition reaction in the ammonia decomposition system 10 is an endothermic reaction. Therefore, when the ammonia decomposition reaction occurs, the temperature within the ammonia decomposition system 10 may decrease. In this case, incomplete decomposition of ammonia increases and the amount of residual ammonia may increase. The ammonia decomposition system 10 according to an embodiment of the present disclosure can reduce the amount of residual ammonia by continuously promoting the ammonia decomposition reaction.

[0047] The fuel cell 200 according to the exemplary embodiment may supply nitrogen and unconverted hydrogen, etc. to the heating unit 400 before resupplying the nitrogen and unconverted hydrogen, etc. to the decomposer 100. Therefore, the temperature of the unconverted hydrogen is relatively higher than the internal temperature of the decomposer 100, and a warming effect of the decomposer 100 may be induced. As described above, the ammonia decomposition system 10 may provide a warming effect by compensating for a temperature drop caused by an imbalance of substances supplied into the decomposer 100 and an endothermic reaction.

[0048] After the combustion reaction in the heating unit 400 , flue gas may be exhausted.

[0049] Figure 2 is a schematic block diagram illustrating a configuration of an ammonia decomposition system according to an exemplary embodiment.

[0050] Reference Figure 2 , the ammonia decomposition system 10 may include a decomposer 100, a control unit 110, a fuel cell 200, a bypass line 300, a heating unit 400, an absorption unit 510, and a sensing unit 600. The internal configuration included in the ammonia decomposition system 10 is not limited thereto. The ammonia decomposition system 10 of the present disclosure may include a processing server or a cloud server capable of substantially performing the functions of the control unit 110 instead of the control unit 110. The decomposer 100 of the ammonia decomposition system 10 may include a reactor.

[0051] The decomposer 100 may include a sensing unit 600 for sensing the internal temperature of the decomposer 100. The control unit 110 may receive the internal temperature information of the decomposer 100 from the sensing unit 600. According to an exemplary embodiment, the sensing unit 600 may sense the residual ammonia amount inside the decomposer. The control unit 110 may receive the residual ammonia amount information inside the decomposer 100 from the sensing unit 600. The sensing unit 600 includes a sensor capable of sensing various information inside the decomposer 100 (e.g., the internal temperature of the decomposer, the residual ammonia amount inside the decomposer, etc.). The control unit 110 may receive the information sensed by the sensing unit 600.

[0052] According to an exemplary embodiment, the control unit 110 may control the operation of the bypass line 300 based on at least one of the temperature information and the residual ammonia information.

[0053] In one embodiment, when the temperature inside the decomposer 100 is lower than a preset temperature, the control unit 110 may control the operation of the bypass line 300 to open the bypass valve 310. In one embodiment, when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount, the control unit 110 may control the operation of the bypass line 300 to open the bypass valve 310.

[0054] According to an exemplary embodiment, the bypass line 300 may include a hydrogen supply pipe 320 and a bypass valve 310. The hydrogen supply pipe 320 may supply hydrogen, which is a product of ammonia decomposition reaction inside the decomposer 100. For example, the bypass valve 310 may adjust a hydrogen flow rate of the hydrogen supply pipe.

[0055] In one embodiment, the operation of opening the valve may be an operation of fully opening the valve. In one embodiment, the operation of opening the valve may be an operation of partially opening the valve. In one embodiment, when the bypass valve 310 is opened, the flow to the fuel cell 200 may be blocked.

[0056] According to an exemplary embodiment, through the operation of opening the valve, the opening degree of the valve may be adjusted within a range between a valve fully closed state and a valve fully opened state.

[0057] The heating unit 400 may be disposed adjacent to the decomposer 100 to heat the decomposer 100. The heating unit 400 may heat the decomposer 100. The heating unit 400 may heat hydrogen and / or ammonia to be supplied into the decomposer 100.

[0058] The heating unit 400 may pass through the decomposer 100, extend into the decomposer 100, surround the decomposer 100, or be adjacent to the decomposer 100 to transfer heat. Therefore, the heating unit 400 may increase the temperature inside the decomposer 100 to further induce the endothermic (decomposition) reaction of ammonia inside the decomposer 100.

[0059] The heating unit 400 may include at least one tube. The control unit 110 may control the operation of the bypass line 300 based on the temperature information to heat the decomposer 100 through the at least one tube.

[0060] The absorption unit 510 may absorb residual ammonia exhausted from the decomposer 100. For example, the absorption unit 510 may be located between the exhaust pipe 150 of the decomposer 100 and an absorption (inlet) pipe of the fuel cell 200.

[0061] In one embodiment, the absorption unit 510 may use the exhaust pipe 150 of the decomposer 100 as the absorption pipe of the absorption unit 510 , and may use the absorption pipe 210 of the fuel cell 200 as the exhaust pipe of the absorption unit 510 .

[0062] The storage unit (not shown) may store data supporting various functions of the ammonia decomposition system 10 and programs for controlling the operation of the control unit 110. The storage unit may store input / output data (e.g., music files, still images, videos, etc.). The storage unit may store a plurality of application programs (or applications) running in the ammonia decomposition system 10, data for the operation of the ammonia decomposition system 10, and instructions. At least a portion of these application programs may be downloaded from an external server via wireless communication.

[0063] The storage unit may include at least one type of storage medium selected from Network Attached Storage (NAS), flash memory type, hard disk type, SSD type (Solid State Disk type), SDD type (Silicon Disk Drive type), multimedia card micro type, card type memory (such as SD or XD memory, etc.), RAM (random access memory), SRAM (static random access memory), ROM (read-only memory), EEPROM (electrically erasable programmable read-only memory), PROM (programmable read-only memory), magnetic storage, magnetic disk, and optical disk. The storage unit is separated from the ammonia decomposition system 10, but may also include a database connected by wire or wirelessly.

[0064] The ammonia decomposition system 10 may further include an output unit (not shown). The output unit may generate output related to vision, hearing, touch, etc., and may include a display unit.

[0065] The display unit can realize a touch screen by forming an interlayer structure with the touch sensor, or being provided with the touch sensor in an integrated structure. The touch screen can be provided as a user input unit, which provides an input interface between the ammonia decomposition system 10 and the user, and can provide an output interface between the ammonia decomposition system 10 and the user.

[0066] The display unit (not shown) displays (outputs) information processed in the ammonia decomposition system 10. For example, the display unit may display execution screen information of an application program (e.g., an application) running in the ammonia decomposition system 10, or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information.

[0067] Can be used with Figure 2The performance of the configurations shown corresponds to adding or deleting at least one configuration. In addition, those skilled in the art will readily appreciate that the relative positions of the configurations may be changed according to the performance or structure of the ammonia decomposition system 10.

[0068] on the other hand, Figure 2 Each configuration shown in the EMBODIMENTS may refer to software and / or hardware configurations such as a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

[0069] Figure 3 is a schematic flow chart for explaining an ammonia decomposition method through a bypass line in a load following state according to an exemplary embodiment.

[0070] Reference Figure 3 In step S310, the control unit (eg, Figure 2 The control unit 110) may receive a decomposer (eg, Figure 1 For example, the control unit 110 may receive a temperature information of the decomposer 100 included in the decomposer 100 and used to sense various information inside the decomposer 100 (eg, Figure 2 The information received by the control unit 110 may include the internal temperature information of the decomposer 100.

[0071] In step S320, the control unit 110 may receive residual ammonia information inside the decomposer 100. The residual ammonia information includes residual ammonia amount information remaining as a product after the ammonia reaction inside the decomposer 100. The information received by the control unit 110 may include residual ammonia amount information inside the decomposer 100.

[0072] At least a portion of the residual ammonia may be discharged from the decomposer 100 through an exhaust pipe of the decomposer 100 and may flow into an absorption unit (eg, Figure 2 The absorption unit 510 has an absorption tube.

[0073] In step S330, the control unit 110 may control the operation of the bypass line. The control unit 110 controls the operation of the bypass line based on at least one of the internal temperature information of the decomposer 100 and the residual ammonia amount information.

[0074] According to an exemplary embodiment, the control unit 110 may control the operation of the bypass line 300 to improve the efficiency of the ammonia decomposition reaction inside the decomposer 100. In some embodiments, the control unit 110 may control the operation of the bypass line 300 to increase the temperature inside the decomposer 100. In some embodiments, the control unit 110 may control the operation of the bypass line 300 to reduce the amount of residual ammonia inside the decomposer 100.

[0075] Figure 4 is a flowchart for explaining a method of decomposing ammonia through a bypass line in a load following state according to an exemplary embodiment.

[0076] Reference Figure 4 In step S410, the control unit (eg, Figure 2 The control unit 110) can be a decomposer (eg, Figure 1 The control unit 110 may compare the internal temperature of the decomposer 100 with a preset temperature. For example, the control unit 110 may check whether the internal temperature of the decomposer 100 is lower than the preset temperature. The preset temperature may be stored in the storage unit. In some embodiments, the preset temperature may correspond to a critical temperature at which an ammonia decomposition reaction may occur inside the decomposer 100.

[0077] In step S420, the control unit 110 may compare the amount of residual ammonia in the decomposer 100 with a preset amount. For example, the control unit 110 may check whether the amount of residual ammonia in the decomposer is greater than or equal to the preset amount. The preset amount may be stored in the storage unit. In some embodiments, the preset amount may correspond to a critical amount of residual ammonia that can suppress the ammonia decomposition reaction in the decomposer 100.

[0078] The critical amount of residual ammonia may be an amount at which the ammonia decomposition reaction inside the decomposer 100 starts to be suppressed when the residual ammonia inside the decomposer 100 is used again as ammonia as a reactant.

[0079] That is, even if the residual ammonia is used as a reactant again, the critical amount of the residual ammonia may be determined by the ratio of the product to a certain reactant when the ammonia decomposition productivity inside the decomposer 100 changes from positive (+) to negative (-).

[0080] In step S430, the control unit 110 may control the bypass line (eg, Figure 2 The bypass line 300) is operated to open the bypass valve.

[0081] In one embodiment, when the internal temperature of the decomposer 100 is lower than the preset temperature in step S410, the control unit 110 controls the operation of the bypass line 300 to open the bypass valve. The control unit 110 can control the opening of the bypass valve in stages according to the difference between the preset temperature and the internal temperature of the decomposer 100.

[0082] In one embodiment, when the residual ammonia amount is greater than or equal to a preset amount in step S420, the control unit 110 controls the operation of the bypass line 300 to open the bypass valve. The control unit 110 may control the opening of the bypass valve in stages according to the difference between the preset amount and the residual ammonia amount.

[0083] As described above, the control unit 110 may control the opening degree of the bypass valve in proportion to the degree of the temperature difference or the amount difference.

[0084] In step S440, the control unit 110 may control the pressurizing unit to operate. The pressurizing unit may be a device for adjusting the pressure inside the decomposer 100 by applying pressure to the decomposer 100. The internal temperature of the decomposer 100 may be increased by the pressurizing unit.

[0085] When the amount of residual ammonia is greater than or equal to the preset amount in step S420, the control unit 110 may control the operation of the pressurizing unit to increase the pressure inside the decomposer 100 instead of opening the bypass valve. As the pressurizing unit applies pressure to the decomposer 100, the temperature inside the decomposer 100 may increase. Therefore, the ammonia decomposition reaction inside the decomposer 100 may be promoted to reduce the amount of residual ammonia inside the decomposer 100.

[0086] Figure 5a and Figure 5b is a block diagram showing an exemplary position change of the bypass line. Figure 5a , Figure 5b , Figure 6 and Figure 7 In order to facilitate the illustration, Figure 1 The exhaust pipe 150, the absorption pipe 210, the hydrogen supply pipe 320 and the bypass valve 310 are shown in FIG.

[0087] Reference Figure 5a and Figure 5b , the connection position of the bypass line 300 may be appropriately changed. The ammonia decomposition system 10 may include the bypass line 300 to interact with a stage before part of the residual ammonia flows into the absorption unit 510 or a stage after the residual ammonia is absorbed by the absorption unit 510 and only hydrogen and nitrogen are discharged.

[0088] The bypass line 300 may connect the pipe connecting the decomposer 100 and the fuel cell 200 and the pipe connecting the fuel cell 200 and the heating unit 400 to each other. Therefore, the control unit 110 may supply relatively high temperature hydrogen from the hydrogen supply pipe of the bypass line 300 to the heating unit.

[0089] like Figure 5aAs shown, the bypass line 300 may be located between the exhaust pipe of the decomposer 100 and the absorption pipe of the fuel cell 200. In this case, the ammonia decomposition system 10 may use the exhaust pipe of the decomposer 100 as the absorption pipe of the absorption unit 510, and use the absorption pipe of the fuel cell 200 as the exhaust pipe of the absorption unit 510. The bypass line 300 may connect the exhaust pipe of the decomposer 100 or the absorption pipe of the absorption unit 510 and the exhaust pipe of the fuel cell 200.

[0090] like Figure 5b As shown, the bypass line 300 may be located between the exhaust pipe of the absorption unit 510 and the absorption pipe of the fuel cell 200. In this case, the bypass line 300 may connect the exhaust pipe of the absorption unit 510 or the absorption pipe of the fuel cell 200 and the exhaust pipe of the fuel cell 200.

[0091] The ammonia decomposition system 10 may control the operation of the bypass line 300 so that hydrogen in the product may bypass the fuel cell 200 without passing through the fuel cell 200. The ammonia decomposition system 10 may have a structure that may utilize waste heat of the battery.

[0092] According to an exemplary embodiment, in the ammonia decomposition system 10, the battery may be disposed adjacent to the heating unit 400. Therefore, the ammonia decomposition system 10 may quickly increase the internal temperature of the decomposer 100.

[0093] Figure 6 is a block diagram of an ammonia decomposition system including a separation membrane according to an exemplary embodiment.

[0094] Reference Figure 6 , the ammonia decomposition system 10 may include a separation membrane 700 adjacent to the decomposer 100 or coupled to the exhaust pipe of the decomposer 100. The separation membrane 700 may allow hydrogen and nitrogen in the hydrogen, nitrogen, and residual ammonia discharged from the exhaust pipe of the decomposer 100 to permeate. The separation membrane 700 may inhibit the residual ammonia from flowing into the absorption pipe including the absorption unit 510.

[0095] The separation membrane 700 may include a material that does not allow ammonia particles to pass in one direction. For example, the separation membrane 700 may have a structure including a membrane filter. Therefore, the ammonia decomposition system 10 can suppress the discharge of residual ammonia to the outside of the separation membrane 700.

[0096] In one embodiment, the separation membrane 700 can prevent ammonia particles from penetrating through an electrical reaction. The ammonia decomposition system 10 can control the operation of the separation membrane 700 based on the residual ammonia information. For example, when residual ammonia is detected in the discharge pipe of the decomposer 100, the control unit 110 can control the residual ammonia to not flow to the absorption unit 510 or the bypass line 300 through the separation membrane 700.

[0097] Figure 7is a block diagram of an ammonia decomposition system that can open and close a valve according to an exemplary embodiment.

[0098] Reference Figure 7 The ammonia decomposition system 10 may include valves 120 , 130 (eg, a first valve 120 , a second valve 130 ) adjacent to the decomposer 100 or coupled to the absorption pipe and the discharge pipe of the decomposer 100 .

[0099] The first valve 120 may adjust the flow rate of ammonia flowing in from the absorption pipe of the decomposer 100. The second valve 130 may adjust the flow rates of hydrogen, nitrogen, and residual ammonia discharged from the discharge pipe of the decomposer 100. The control unit 110 may control the pressure and the increased temperature inside the decomposer 100 by controlling the operation of at least one of the first valve 120 and the second valve 130.

[0100] According to an exemplary embodiment, when the amount of residual ammonia inside the decomposer 100 is greater than or equal to a preset amount, the control unit 110 may close at least one of the first valve 120 and the second valve 130. When the first valve 120 is closed, the reaction pressure and temperature inside the decomposer 100 may be quickly adjusted. In addition, when the second valve 130 is closed, the reaction pressure and temperature inside the decomposer 100 may be quickly adjusted.

[0101] As described above, the control unit 110 may form an environment capable of promoting the reaction inside the decomposer 100 by combining the closed state or the open state of the first valve 120 and the second valve 130 .

[0102] According to an exemplary embodiment, the ammonia decomposition system 10 may include a first valve 120 and a second valve 130 respectively located in an absorption pipe and a discharge pipe of the decomposer 100 to control closing / opening and closing / opening degree of each valve 120 , 130 .

[0103] The embodiments of the present disclosure may be implemented in the form of a recording medium storing instructions executable by a computer. The instructions may be stored in the form of program code, and when the instructions are executed by a processor, a program module may be generated to perform the operations of the disclosed embodiments. The recording medium may be implemented in the form of a computer-readable recording medium.

[0104] Computer-readable recording media include all types of recording media that store instructions that can be read by a computer, such as ROM (Read Only Memory), RAM (Random Access Memory), magnetic tapes, magnetic disks, flash memories, optical data storage devices, etc.

[0105] Above, the disclosed embodiments are described with reference to the accompanying drawings. Those skilled in the art to which the present disclosure belongs will understand that the present disclosure can be implemented in a form different from the disclosed embodiments without changing the technical ideas or essential features of the present disclosure. The disclosed embodiments are exemplary and should not be interpreted as limiting.

Claims

1. An ammonia decomposition system, comprising: a decomposer, which breaks down ammonia to produce hydrogen; A heating unit, heating the decomposer; a fuel cell that reacts the hydrogen to generate electricity; a bypass line connecting the pipe connecting the decomposer and the fuel cell and the pipe connecting the fuel cell and the heating unit; A sensing unit, sensing the internal temperature of the decomposer; as well as A control unit receives the internal temperature information of the decomposer from the sensor unit, The control unit receives residual ammonia information inside the decomposer and controls operation of the bypass line based on at least one of the temperature information and the residual ammonia information.

2. The ammonia decomposition system according to claim 1, wherein: The bypass line comprises: a hydrogen supply pipe; and A bypass valve is used to adjust the hydrogen flow rate of the hydrogen supply pipe. The control unit is configured to control the operation of the bypass line to open the bypass valve when the decomposer internal temperature is lower than a preset temperature.

3. The ammonia decomposition system according to claim 2, further comprising: an absorption unit, absorbing residual ammonia discharged from the decomposer, The absorption unit is located between the exhaust pipe of the decomposer and the absorption pipe of the fuel cell, The exhaust pipe of the decomposer is used as the exhaust pipe of the absorption unit, and the exhaust pipe of the fuel cell is used as the exhaust pipe of the absorption unit, The bypass line connects the exhaust pipe of the decomposer or the absorption pipe of the absorption unit and the exhaust pipe of the fuel cell, or The bypass line connects an exhaust pipe of the absorption unit or an absorption pipe of the fuel cell and an exhaust pipe of the fuel cell.

4. The ammonia decomposition system according to claim 3, wherein: The control unit is configured to control the operation of the bypass line to open the bypass valve when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount.

5. The ammonia decomposition system according to claim 4, further comprising: The separation membrane allows the hydrogen and nitrogen in the hydrogen and nitrogen exhausted from the exhaust pipe of the cracker and the residual ammonia to permeate.

6. The ammonia decomposition system according to claim 4, further comprising: a first valve for regulating the flow rate of ammonia flowing from the absorption pipe of the decomposer; as well as The second valve adjusts the flow rates of hydrogen, nitrogen and residual ammonia discharged from the discharge pipe of the decomposer.

7. The ammonia decomposition system according to claim 6, wherein: The control unit is configured to control the pressure and increase the temperature inside the decomposer by closing at least one of the first valve and the second valve when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount.

8. The ammonia decomposition system according to claim 4, further comprising: The pressurizing unit adjusts the pressure inside the decomposer.

9. The ammonia decomposition system according to claim 8, wherein: The control unit is configured to increase the pressure inside the decomposer through the pressurizing unit when the amount of residual ammonia inside the decomposer is greater than or equal to a preset amount.

10. A method for decomposing ammonia, comprising the following steps: receiving the internal temperature information of the decomposer from a sensing unit, wherein the sensing unit is used to sense the internal temperature of the decomposer that decomposes ammonia to produce hydrogen; Receiving residual ammonia information in the decomposer; as well as Operation of a bypass line connecting a pipe connecting the decomposer and a fuel cell and a pipe connecting the fuel cell and a heating unit is controlled based on at least one of the temperature information and the residual ammonia information.

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