CN217627625U - Hydrogen purification device and water electrolysis hydrogen production system - Google Patents
Hydrogen purification device and water electrolysis hydrogen production system Download PDFInfo
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- CN217627625U CN217627625U CN202221274759.5U CN202221274759U CN217627625U CN 217627625 U CN217627625 U CN 217627625U CN 202221274759 U CN202221274759 U CN 202221274759U CN 217627625 U CN217627625 U CN 217627625U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The embodiment of the utility model discloses hydrogen purification device and electrolytic water hydrogen production system. The hydrogen purification device includes: the device comprises a preheating module, a deoxidizing module, a cooling and drying module and a regenerating and drying module; the deoxidation module is communicated with the preheating module and is used for removing oxygen in the crude hydrogen introduced by the preheating module to obtain deoxidized hydrogen; the preheating module is used for preheating the crude hydrogen introduced into the deoxidizing module through the preheating module by using the heat emitted by the introduced deoxidizing hydrogen; the cooling and drying module is communicated with the preheating module and is used for cooling the deoxygenated hydrogen and removing moisture in the deoxygenated hydrogen to obtain pure hydrogen; the regeneration drying module is communicated with the preheating module and is used for removing moisture in the regeneration drying module by using the pure hydrogen introduced by the preheating module; the preheating module is used for preheating the pure hydrogen which is guided to the regeneration drying module through the preheating module by utilizing the heat emitted by the introduced deoxidized hydrogen. The scheme can fully utilize the heat energy after crude hydrogen deoxidation.
Description
Technical Field
The embodiment of the utility model provides a relate to hydrogen purification technical field, especially relate to a hydrogen purification device and electrolytic water hydrogen manufacturing system.
Background
In recent years, attention is paid to recycling of heat energy, and a series of policies, laws and regulations and measures such as 'energy law' are correspondingly issued by the country, so that the implementation strength of energy conservation and emission reduction is increased.
The deoxidation module in the existing hydrogen purification device for hydrogen production by water electrolysis is provided with an electric heater, the temperature of hydrogen obtained after the heated crude hydrogen completes deoxidation reaction is very high, the existing hydrogen purification device directly feeds the obtained high-temperature hydrogen into a cooler for cooling, so that water vapor contained in the high-temperature hydrogen is condensed into liquid water, and then the water is removed by a gas-water separator. Therefore, the heat energy of the high-temperature hydrogen in the process is directly taken away by the cooling liquid, the waste of the heat energy in the hydrogen purification process exists, and the energy consumption of the hydrogen purification device can be increased to a certain extent.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a hydrogen purification device and electrolytic water hydrogen manufacturing system to make full use of heat energy after the crude hydrogen deoxidation reduces hydrogen purification device's energy consumption.
In a first aspect, an embodiment of the present invention provides a hydrogen purification apparatus, which includes a preheating module, a deoxidizing module, a cooling and drying module, and a regenerating and drying module;
the deoxidation module is communicated with the preheating module and is used for removing oxygen in the crude hydrogen introduced by the preheating module to obtain deoxidized hydrogen; the preheating module is used for preheating the crude hydrogen introduced into the deoxidizing module through the preheating module by using the heat emitted by the introduced deoxidizing hydrogen;
the cooling and drying module is communicated with the preheating module and is used for cooling the deoxygenated hydrogen and removing moisture in the deoxygenated hydrogen to obtain pure hydrogen;
the regeneration drying module is communicated with the preheating module and is used for removing moisture in the regeneration drying module by using the pure hydrogen introduced by the preheating module; the preheating module is used for preheating the pure hydrogen which is guided to the regeneration drying module through the preheating module by using the heat emitted by the guided deoxygenated hydrogen.
Optionally, the preheating module comprises a deoxidizing preheating unit and a regenerating preheating unit;
the deoxidation module and the regeneration preheating unit are communicated with the deoxidation preheating unit, and the regeneration drying module and the cooling drying module are communicated with the regeneration preheating unit;
the deoxidation preheating unit is used for preheating crude hydrogen guided into the deoxidation module by the deoxidation preheating unit by using heat emitted by the deoxidation hydrogen guided into the deoxidation module;
the regeneration preheating unit is used for preheating the pure hydrogen guided to the regeneration drying module by the regeneration preheating unit by using the heat emitted by the deoxidized hydrogen guided by the deoxidation preheating unit.
Optionally, the deoxygenation pre-heating unit comprises a crude hydrogen inlet, a crude hydrogen outlet, a first deoxygenated hydrogen inlet, and a first deoxygenated hydrogen outlet;
in the deoxidation preheating unit, a crude hydrogen inlet is communicated with a crude hydrogen outlet, and a first deoxidation hydrogen inlet is communicated with a first deoxidation hydrogen outlet;
outside the deoxidation preheating unit, a crude hydrogen air inlet is communicated with a crude hydrogen air guide pipe, a crude hydrogen air outlet is communicated with an air inlet of the deoxidation module, an air outlet of the deoxidation module is communicated with a first deoxidation hydrogen air inlet, and a first deoxidation hydrogen air outlet is communicated with the regeneration preheating unit.
Optionally, the regeneration preheating unit comprises a second deoxygenated hydrogen inlet, a second deoxygenated hydrogen outlet, a pure hydrogen inlet, and a pure hydrogen outlet;
in the regeneration preheating unit, a second deoxygenated hydrogen inlet is communicated with a second deoxygenated hydrogen outlet, and a pure hydrogen inlet is communicated with a pure hydrogen outlet;
and the second deoxygenation hydrogen inlet is communicated with the deoxygenation preheating unit, the second deoxygenation hydrogen outlet is communicated with the air inlet of the cooling and drying module, the air outlet of the cooling and drying module is communicated with the pure hydrogen inlet, and the pure hydrogen outlet is communicated with the air inlet of the regeneration and drying module.
Optionally, the deoxygenation preheating unit comprises a first heat exchanger;
the regeneration preheating unit includes a second heat exchanger.
Optionally, the cooling and drying module comprises a cooling unit, a gas-water separation unit and a drying unit;
the cooling unit is communicated with the preheating module and is used for liquefying water vapor doped in the deoxygenated hydrogen introduced by the preheating module;
the gas-water separation unit is communicated with the cooling unit and is used for filtering liquid water mixed in the deoxygenated hydrogen introduced by the cooling unit;
the drying unit is communicated with the gas-water separation unit and is used for adsorbing a small amount of water vapor doped in the deoxygenated hydrogen introduced by the gas-water separation unit to obtain pure hydrogen.
Optionally, the drying unit comprises an exhaust; the exhaust port comprises a first exhaust branch port and a second exhaust branch port;
the first exhaust branch port is communicated with the preheating module, and the second exhaust branch port is communicated with the pure hydrogen gas guide pipe.
Optionally, the cooling unit comprises a deoxygenation cooler;
the gas-water separation unit comprises a gas-water separator;
the drying unit includes a dryer.
Optionally, the deoxygenation module comprises a deoxygenator.
In a second aspect, the embodiment of the present invention further provides a hydrogen production system by water electrolysis, which includes the hydrogen purification apparatus provided in any of the above embodiments.
The embodiment of the utility model provides a, deoxidation module and preheating module intercommunication, preheating module can utilize the heat that leading-in deoxidation hydrogen gived off to preheat the crude hydrogen that the module imports to the deoxidation module through preheating, can reduce the heat absorption of crude hydrogen in the deoxidation module to a certain extent, reduce the energy consumption of electrical heating process in the deoxidation module, have reached energy-conserving purpose. The cooling drying module and the regeneration drying module are communicated with the preheating module, the preheating module can preheat pure hydrogen led into the regeneration drying module through the preheating module by utilizing heat emitted by the led-in deoxygenated hydrogen, the heat absorption of the pure hydrogen in the regeneration drying module can be reduced to a certain extent, the energy consumption of an electric heating process in the regeneration drying module is reduced, and the purpose of energy conservation is achieved. In addition, all preheat in preheating the module before crude hydrogen imports into the deoxidation module and pure hydrogen imports into regeneration drying module, can absorb and walk the partial heat of deoxidation hydrogen, can reduce the heat transfer area that the cooling drying module used for cooling down for deoxidation hydrogen to reduce the quantity of coolant liquid, reduced hydrogen purification device's working costs to a certain extent. Compared with the prior art, the scheme can fully utilize the heat energy generated after the crude hydrogen is deoxidized, reduce the energy consumption of the hydrogen purification device and reduce the operating cost of the hydrogen purification device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.
Fig. 1 is a schematic structural diagram of a hydrogen purification apparatus provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another hydrogen purification apparatus provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a system for producing hydrogen by electrolyzing water according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the utility model provides a hydrogen purification device, figure 1 is the utility model provides a hydrogen purification device's that provides structural schematic diagram. As shown in fig. 1, the embodiment of the present invention provides a hydrogen purification apparatus including: a preheating module 110, a deoxidation module 120, a cooling and drying module 130, and a regeneration and drying module 140; the deoxidation module 120 is communicated with the preheating module 110, and the deoxidation module 120 is used for removing oxygen in the crude hydrogen introduced by the preheating module 110 to obtain deoxidized hydrogen; the preheating module 110 is used for preheating the crude hydrogen introduced into the deoxidizing module 120 through the preheating module 110 by using heat emitted by the introduced deoxidized hydrogen; the cooling and drying module 130 is communicated with the preheating module 110, and the cooling and drying module 130 is used for cooling the deoxygenated hydrogen and removing moisture in the deoxygenated hydrogen to obtain pure hydrogen; the regeneration drying module 140 is communicated with the preheating module 110, and the regeneration drying module 140 is used for removing moisture in the regeneration drying module 140 by using the pure hydrogen introduced through the preheating module 110; the preheating module 110 serves to preheat the pure hydrogen introduced into the regeneration drying module 140 through the preheating module 110 using heat emitted from the introduced deoxidized hydrogen.
The hydrogen purification device can remove other gases doped in the crude hydrogen, so that pure hydrogen with a single component is obtained. Illustratively, the raw hydrogen is doped with oxygen and water vapor, the deoxygenation module 120 in the hydrogen purification device may remove the oxygen, and the cool drying module 130 in the hydrogen purification device may remove the water vapor. A large amount of heat is generated in the process of removing oxygen by the deoxidation module 120, and the preheating module 110 in the hydrogen purification device can fully utilize the heat energy after crude hydrogen deoxidation before water vapor is removed, so that the purpose of energy saving is achieved. The regeneration drying module 140 is a drying module with saturated adsorption capacity, so that water adsorbed by the regeneration drying module 140 can be discharged by using the introduced hydrogen, and the water absorption capacity of the regeneration drying module 140 is recovered.
The specific operation of the hydrogen purification apparatus will be described with reference to fig. 1. Illustratively, the raw hydrogen is first passed through the pre-heat module 110 and then directed to the deoxygenation module 120 for deoxygenation. The crude hydrogen enters the deoxidation module 120, and is electrically heated in the deoxidation module 120, after the crude hydrogen reaches a certain temperature, oxygen doped in the crude hydrogen and hydrogen generate a chemical combination reaction under the condition of high temperature, namely 2H 2 +O 2 ＝2H 2 O, thereby removing oxygen from the crude hydrogen. Since the combination reaction of the hydrogen and the oxygen is an exothermic reaction, and the reaction is performed under a high temperature condition, the temperature of the remaining deoxygenated hydrogen after the deoxygenation in the deoxygenation module 120 is high, that is, the thermal energy carried by the deoxygenated hydrogen is high.In order to prevent the heat carried by the deoxygenated hydrogen from being wasted, the deoxygenation module 120 re-inputs the generated deoxygenated hydrogen into the preheating module 110, so that the preheating module 110 preheats the crude hydrogen which passes through the preheating module 110 for the first time by using the heat emitted by the introduced deoxygenated hydrogen, thereby reducing the heat absorption of the crude hydrogen in the deoxygenation module 120 to a certain extent, reducing the energy consumption in the electrical heating process in the deoxygenation module 120, and achieving the purpose of energy saving. Meanwhile, in the process of preheating the crude hydrogen, part of heat of the deoxidized hydrogen is transferred to the crude hydrogen, so that the temperature of the deoxidized hydrogen is reduced.
The preheating module 110 further transfers the deoxygenated hydrogen into the cool drying module 130, so that the cool drying module 130 cools the deoxygenated hydrogen. For example, pure hydrogen is obtained by removing moisture doped in deoxygenated hydrogen by means of condensation and adsorption.
The cool drying module 130 further guides the generated pure hydrogen to the regeneration drying module 140 through the preheating module 110. The regeneration drying module 140 may electrically heat the introduced pure hydrogen, so that the pure hydrogen may lead out the water vapor in the regeneration drying module 140, thereby removing the water in the regeneration drying module 140. In the process, the pure hydrogen introduced into the regeneration drying module 140 through the preheating module 110 can be preheated in the preheating module 110, so that the heat absorption of the pure hydrogen in the regeneration drying module 140 can be reduced to a certain extent, the energy consumption of the pure hydrogen in the electric heating process in the regeneration drying module 140 is reduced, and the purpose of energy conservation is achieved. Meanwhile, in the process of preheating the pure hydrogen, part of heat of the deoxidized hydrogen is transferred to the pure hydrogen, so that the temperature of the deoxidized hydrogen is further reduced.
In addition, the crude hydrogen is preheated in the preheating module 110 before being introduced into the deoxidizing module 120 and the pure hydrogen is preheated in the regenerating and drying module 140, so that part of heat of the deoxidized hydrogen is absorbed, and the heat exchange area used when the cooling and drying module 130 cools the deoxidized hydrogen is reduced, so that the consumption of cooling liquid is reduced, and the operating cost of the hydrogen purifying device is reduced to a certain extent.
The embodiment of the utility model provides a, deoxidation module and preheating module intercommunication, preheating module can utilize the heat that leading-in deoxidation hydrogen gived off to preheat the crude hydrogen that the module imports to the deoxidation module through preheating, can reduce the heat absorption of crude hydrogen in the deoxidation module to a certain extent, also exactly reduces the energy consumption of electrical heating process in the deoxidation module, has reached energy-conserving purpose. The cooling drying module and the reviewing drying module are communicated with the preheating module, the preheating module can preheat pure hydrogen led into the regeneration drying module through the preheating module by utilizing heat emitted by the led-in deoxygenated hydrogen, heat absorption in the regeneration drying module can be reduced to a certain degree, namely, energy consumption in an electric heating process in the regeneration drying module is reduced, and the purpose of energy conservation is achieved. In addition, all preheat in preheating the module before crude hydrogen imports into the deoxidation module and pure hydrogen imports into regeneration drying module, can absorb and walk the partial heat of deoxidation hydrogen, can reduce the heat transfer area that the cooling drying module used for cooling down for deoxidation hydrogen to reduce the quantity of coolant liquid, reduced hydrogen purification device's working costs to a certain extent. Compared with the prior art, the scheme can fully utilize the heat energy generated after the crude hydrogen is deoxidized, reduce the energy consumption of the hydrogen purification device and reduce the operating cost of the hydrogen purification device.
In the above embodiments, the preheating module may be disposed in various ways and connected to the pipeline, and the following description is specific, but not limiting the present invention.
Fig. 2 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention. As shown in fig. 2, the preheating module includes a deoxidizing preheating unit 111 and a regenerating preheating unit 112; the deoxidation module 120 and the regeneration preheating unit 112 are both communicated with the deoxidation preheating unit 111, and the regeneration drying module 140 and the cooling drying module 130 are both communicated with the regeneration preheating unit 112; the deoxidation preheating unit 111 is used for preheating the crude hydrogen introduced into the deoxidation module 120 through the deoxidation preheating unit 111 by using heat emitted from the deoxidized hydrogen introduced through the deoxidation module 120; the regeneration preheating unit 112 serves to preheat the pure hydrogen introduced to the regeneration drying module 140 through the regeneration preheating unit 112 using heat emitted from the deoxidized hydrogen introduced through the deoxidized preheating unit 111.
Wherein the preheating module has a function of preheating the raw hydrogen and the pure hydrogen transferred therethrough using heat emitted from the deoxidized hydrogen introduced through the deoxidizing module 120. The deoxidation preheating unit 111 included in the preheating module may preheat the raw hydrogen introduced into the deoxidation module 120 through the deoxidation preheating unit 111 using heat emitted from the deoxidized hydrogen introduced through the deoxidation module 120. The regeneration preheating unit 112 included in the preheating module may preheat the pure hydrogen introduced into the regeneration drying module 140 through the regeneration preheating unit 112 using heat emitted from the deoxidized hydrogen introduced through the deoxidized preheating unit 111.
Specifically, the deoxidation preheating unit 111 is communicated with the deoxidation module 120, crude hydrogen can be introduced into the deoxidation module 120 through the deoxidation preheating unit 111 to be deoxidized to generate deoxidized hydrogen, the deoxidation module 120 introduces the generated high-temperature deoxidized hydrogen into the deoxidation preheating unit 111, so that the deoxidation preheating unit 111 preheats the crude hydrogen introduced into the deoxidation module 120 through the deoxidation preheating unit 111 by using heat emitted by the introduced deoxidized hydrogen, thereby reducing heat absorption of the crude hydrogen in the deoxidation module 120 to a certain extent, reducing energy consumption in an electric heating process in the deoxidation module 120, and achieving the purpose of energy saving. Meanwhile, in the process of preheating the crude hydrogen, part of heat of the deoxidized hydrogen is transferred to the crude hydrogen, so that the temperature of the deoxidized hydrogen is reduced.
The deoxidizing preheating unit 111 is in communication with the regenerating preheating unit 112, and the deoxidizing preheating unit 111 may introduce high-temperature deoxidized hydrogen into the regenerating preheating unit 112. The regeneration drying module 140 and the cooling and drying module 130 are both communicated with the regeneration preheating unit 112, and the regeneration preheating unit 112 can transmit the pure hydrogen generated by the cooling and drying module 130 to the regeneration drying module 140. In the process of transferring the pure hydrogen, the regeneration preheating unit 112 may preheat the pure hydrogen by using the heat emitted from the deoxygenated hydrogen introduced by the deoxygenation preheating unit 111, so as to reduce the heat absorption of the pure hydrogen in the regeneration drying module 140 to a certain extent, that is, reduce the energy consumption in the electrical heating process in the regeneration drying module 140, thereby achieving the purpose of saving energy. Meanwhile, in the pure hydrogen preheating process, part of heat of the deoxidized hydrogen is transferred to the pure hydrogen, so that the temperature of the deoxidized hydrogen is further reduced.
In addition, the deoxidation preheating unit 111 preheats the crude hydrogen transmitted to the deoxidation module 120 by using the deoxidation hydrogen, and the regeneration preheating unit 112 preheats the pure hydrogen transmitted to the regeneration drying module 140 by using the deoxidation hydrogen, so that partial heat of the deoxidation hydrogen can be absorbed, the heat exchange area for the deoxidation hydrogen cooling use of the drying module is reduced, the use amount of cooling liquid is reduced, and the operation cost of the hydrogen purification device is reduced to a certain extent.
Fig. 3 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention. As shown in fig. 3, the deoxygenated pre-heating unit 111 includes a crude hydrogen inlet A1, a crude hydrogen outlet A2, a first deoxygenated hydrogen inlet A3, and a first deoxygenated hydrogen outlet A4; in the deoxidation preheating unit 111, a crude hydrogen inlet A1 is communicated with a crude hydrogen outlet A2, and a first deoxidation hydrogen inlet A3 is communicated with a first deoxidation hydrogen outlet A4; outside the deoxidation preheating unit 111, a crude hydrogen inlet A1 is communicated with a crude hydrogen gas guide pipe, a crude hydrogen outlet A2 is communicated with a gas inlet B1 of the deoxidation module 120, a gas outlet B2 of the deoxidation module 120 is communicated with a first deoxidation hydrogen inlet A3, and a first deoxidation hydrogen outlet A4 is communicated with the regeneration preheating unit 112.
According to the connection relationship: two gas transmission channels are arranged inside the deoxidation preheating unit 111, and crude hydrogen output by the crude hydrogen gas guide pipe is transmitted to a gas inlet B1 of the deoxidation module 120 through the gas transmission channels communicated with a crude hydrogen gas inlet A1 and a crude hydrogen gas outlet A2 inside the deoxidation preheating unit 111. After the deoxidation module 120 deoxidizes the crude hydrogen to generate deoxidized hydrogen, the deoxidized hydrogen output from the gas outlet B2 of the deoxidation module 120 is transmitted to the regeneration preheating unit 112 through a gas transmission channel communicated with a first deoxidized hydrogen gas inlet A3 and a first deoxidized hydrogen gas outlet A4 in the deoxidation preheating unit 111. Inside the deoxidation preheating unit 111, the heat emitted by the deoxidized hydrogen transmitted in the gas transmission channel communicated with the first deoxidized hydrogen inlet A3 and the first deoxidized hydrogen outlet A4 can preheat the crude hydrogen transmitted in the gas transmission channel communicated with the crude hydrogen inlet A1 and the crude hydrogen outlet A2, so that the heat absorption of the crude hydrogen in the deoxidation module 120 can be reduced to a certain extent, the energy consumption of the electric heating process in the deoxidation module 120 is reduced, and the purpose of energy conservation is achieved.
Alternatively, with continued reference to fig. 3, the regeneration preheating unit 112 includes a second deoxygenated hydrogen inlet C1, a second deoxygenated hydrogen outlet C2, a pure hydrogen inlet C3, and a pure hydrogen outlet C4; inside the regeneration preheating unit 112, the second deoxygenated hydrogen inlet C1 is communicated with the second deoxygenated hydrogen outlet C2, and the pure hydrogen inlet C3 is communicated with the pure hydrogen outlet C4; outside the regeneration preheating unit 112, the second deoxygenated hydrogen inlet C1 is communicated with the deoxygenation preheating unit 111, the second deoxygenated hydrogen outlet C2 is communicated with the inlet D1 of the cooling and drying module 130, the outlet D2 of the cooling and drying module 130 is communicated with the pure hydrogen inlet C3, and the pure hydrogen outlet C4 is communicated with the inlet E1 of the regeneration drying module 140.
According to the connection relationship, two gas transmission channels are arranged in the regeneration preheating unit 112, and the deoxygenated hydrogen output from the first deoxygenated hydrogen outlet A4 of the deoxygenation preheating unit 111 is transmitted to the gas inlet D1 of the cooling and drying module 130 through the gas transmission channel in which the second deoxygenated hydrogen inlet C1 and the second deoxygenated hydrogen outlet C2 in the regeneration preheating unit 112 are communicated. After the cooling and drying module 130 removes water from the deoxygenated hydrogen to generate pure hydrogen, the pure hydrogen output from the gas outlet D2 of the cooling and drying module 130 is transmitted to the gas inlet E1 of the regeneration and drying module 140 through a gas transmission channel communicating the pure hydrogen inlet C3 and the pure hydrogen outlet C4 inside the regeneration preheating unit 112. In the regeneration preheating unit 112, the heat emitted by the deoxygenated hydrogen transferred in the gas transfer channel communicating the second deoxygenated hydrogen inlet C1 and the second deoxygenated hydrogen outlet C2 can preheat the pure hydrogen transferred in the gas transfer channel communicating the pure hydrogen inlet C3 and the pure hydrogen outlet C4, so that the heat absorption of the pure hydrogen in the regeneration drying module 140 can be reduced to a certain extent, that is, the energy consumption of the electrical heating process in the regeneration drying module 140 is reduced, and the purpose of energy saving is achieved.
In addition, the crude hydrogen is preheated in the deoxidation preheating unit 111 before being introduced into the deoxidation module 120, so that part of heat of the deoxidized hydrogen can be absorbed, and part of heat of the deoxidized hydrogen is reduced. The pure hydrogen is preheated in the regeneration preheating unit 112 before being introduced into the regeneration drying module 140 to absorb a part of heat of the deoxidized hydrogen, so that the deoxidized hydrogen is further reduced by a part of heat. Therefore, when the deoxygenated hydrogen is input into the cooling and drying module 130 for cooling, the heat exchange area of the cooling and drying module 130 for cooling the deoxygenated hydrogen can be reduced, so that the use amount of the cooling liquid is reduced, and the operating cost of the hydrogen purification device is reduced to a certain extent.
Optionally, the deoxygenation preheating unit comprises a first heat exchanger; the regeneration preheating unit includes a second heat exchanger.
A heat exchanger is a device for transferring heat from a hot fluid to a cold fluid. Specifically, the hot fluid in the first heat exchanger is deoxygenated hydrogen, and the cold fluid is crude hydrogen, so that the heat of the deoxygenated hydrogen can be transferred from the deoxygenated hydrogen to the crude hydrogen. The hot fluid in the second heat exchanger is deoxygenated hydrogen, and the cold fluid is pure hydrogen, so that the heat of the deoxygenated hydrogen can be transferred from the deoxygenated hydrogen to the pure hydrogen. Therefore, the first heat exchanger and the second transducer realize the full utilization of the heat energy of the deoxygenated hydrogen.
Fig. 4 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention. As shown in fig. 4, the cooling and drying module 130 includes a cooling unit 131, a gas-water separation unit 132, and a drying unit 133; the cooling unit 131 is communicated with the preheating module 110, and the cooling unit 131 is used for liquefying water vapor doped in the deoxygenated hydrogen introduced through the preheating module 110; the gas-water separation unit 132 is communicated with the cooling unit 131, and the gas-water separation unit 132 is used for filtering liquid water mixed in the deoxygenated hydrogen introduced through the cooling unit 131; the drying unit 133 is communicated with the gas-water separation unit 132, and the drying unit 133 is configured to adsorb a small amount of water vapor doped in the deoxygenated hydrogen introduced through the gas-water separation unit 132 to obtain pure hydrogen.
The cooling and drying module 130 has a function of removing water. Specifically, the cooling unit 131 in the cooling and drying module 130 has a cooling function, and the moisture doped in the deoxygenated hydrogen can be condensed into liquid water by reducing the temperature of the deoxygenated hydrogen. The cooling unit 131 transfers the cooled deoxygenated hydrogen and the condensed water to the gas-water separation unit 132 to separate the deoxygenated hydrogen from the liquid water, and the deoxygenated hydrogen is input to the drying unit 133 to further adsorb a small amount of water vapor doped in the deoxygenated hydrogen, so as to obtain pure hydrogen.
Fig. 5 is a schematic structural diagram of another hydrogen purification apparatus provided in an embodiment of the present invention. As shown in fig. 5, the drying unit 133 includes an exhaust port 1311; the exhaust port comprises a first exhaust branch port Q1 and a second exhaust branch port Q2; the first exhaust branch port Q1 is communicated with the preheating module 110, and the second exhaust branch port Q2 is communicated with the pure hydrogen gas-guide tube.
The hydrogen gas discharged from the exhaust port of the drying unit 133 may be output to the pure hydrogen gas guiding tube through the second exhaust branch port Q1. The hydrogen discharged from the exhaust port of the drying unit 133 may be further output to the preheating module 110 through the first exhaust branch port Q2, and then output to the regeneration drying module 140 after the preheating module 110 is preheated, so that the regeneration drying module 140 discharges the water adsorbed by the hydrogen by using the introduced hydrogen, and recovers the water absorption capacity of the regeneration drying module.
Optionally, the cooling unit comprises a deoxygenation cooler; the gas-water separation unit comprises a gas-water separator; the drying unit includes a dryer.
The deoxidation cooler has a cooling function, can quickly cool the deoxidation hydrogen, and achieves the purpose of condensing water vapor doped in the deoxidation hydrogen into liquid water. The gas-water separator is a device capable of separating gas and liquid, and has the characteristics of high water removal efficiency and small volume. The dryer is a device capable of adsorbing moisture doped in gas and has the characteristic of high efficiency in water removal.
Optionally, the deoxygenation module comprises a deoxygenator.
Wherein, the deoxygenator is internally provided with an electric heating device which removes oxygen doped in the crude hydrogen by adopting a chemical deoxygenation mode. Specifically, crude hydrogen enters a deoxidation module, and is electrically heated in the deoxidation module, after the crude hydrogen reaches a certain temperature, oxygen doped in the crude hydrogen is subjected to chemical combination reaction with hydrogen under the condition of high temperature, namely 2H 2 +O 2 ＝2H 2 O, thereby removing oxygen from the crude hydrogen.
Fig. 6 is a schematic structural diagram of a system for producing hydrogen by electrolyzing water according to an embodiment of the present invention. As shown in fig. 6, the system 200 for producing hydrogen by electrolyzing water includes a hydrogen purification apparatus 100 provided in any embodiment of the present invention.
Wherein, hydrogen manufacturing system 200 includes the hydrogen purification device 100 that the arbitrary embodiment of the utility model provides, consequently has the beneficial effect of the hydrogen purification device 100 that the embodiment of the utility model provides, and it is no longer repeated here.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, may be executed sequentially, or may be executed in different orders, as long as the desired result of the technical solution of the present invention can be achieved, and the present invention is not limited thereto.
The above detailed description does not limit the scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hydrogen purification apparatus, comprising: the device comprises a preheating module, a deoxidizing module, a cooling and drying module and a regenerating and drying module;
the deoxidation module is communicated with the preheating module and is used for removing oxygen in the crude hydrogen introduced by the preheating module to obtain deoxidized hydrogen; the preheating module is used for preheating the crude hydrogen introduced into the deoxidizing module through the preheating module by using heat emitted by the introduced deoxidizing hydrogen;
the cooling and drying module is communicated with the preheating module and is used for cooling the deoxidized hydrogen and removing moisture in the deoxidized hydrogen to obtain pure hydrogen;
the regeneration drying module is communicated with the preheating module and is used for removing moisture in the regeneration drying module by using the pure hydrogen introduced by the preheating module; the preheating module is used for preheating the pure hydrogen guided to the regeneration drying module through the preheating module by using heat emitted by the guided deoxygenated hydrogen.
2. The hydrogen purification apparatus according to claim 1, wherein the preheating module comprises a deoxygenation preheating unit and a regeneration preheating unit;
the deoxidation module and the regeneration preheating unit are both communicated with the deoxidation preheating unit, and the regeneration drying module and the cooling drying module are both communicated with the regeneration preheating unit;
the deoxidation preheating unit is used for preheating crude hydrogen introduced into the deoxidation module by the deoxidation preheating unit by using heat emitted by the deoxidation hydrogen introduced by the deoxidation module; the regeneration preheating unit is used for preheating the pure hydrogen which is guided into the regeneration drying module through the regeneration preheating unit by using the heat emitted by the deoxidized hydrogen which is guided into the deoxidation preheating unit.
3. The hydrogen purification apparatus according to claim 2, wherein the deoxygenating pre-heating unit comprises a crude hydrogen inlet port, a crude hydrogen outlet port, a first deoxygenated hydrogen inlet port, and a first deoxygenated hydrogen outlet port;
in the deoxidation preheating unit, the crude hydrogen inlet is communicated with the crude hydrogen outlet, and the first deoxidation hydrogen inlet is communicated with the first deoxidation hydrogen outlet;
the deoxidation preheating unit is externally arranged, the crude hydrogen air inlet is communicated with the crude hydrogen air guide pipe, the crude hydrogen air outlet is communicated with the air inlet of the deoxidation module, the air outlet of the deoxidation module is communicated with the first deoxidation hydrogen air inlet, and the first deoxidation hydrogen air outlet is communicated with the regeneration preheating unit.
4. The hydrogen purification apparatus according to claim 2, wherein the regeneration preheating unit comprises a second deoxygenated hydrogen inlet port, a second deoxygenated hydrogen outlet port, a pure hydrogen inlet port, and a pure hydrogen outlet port;
in the regeneration preheating unit, the second deoxygenated hydrogen inlet is communicated with the second deoxygenated hydrogen outlet, and the pure hydrogen inlet is communicated with the pure hydrogen outlet;
and the second deoxygenation hydrogen inlet is communicated with the deoxygenation preheating unit, the second deoxygenation hydrogen outlet is communicated with the air inlet of the cooling and drying module, the air outlet of the cooling and drying module is communicated with the pure hydrogen inlet, and the pure hydrogen outlet is communicated with the air inlet of the regeneration and drying module.
5. The hydrogen purification apparatus according to claim 2, wherein the deoxygenation pre-heating unit comprises a first heat exchanger;
the regeneration preheating unit includes a second heat exchanger.
6. The hydrogen purification apparatus according to claim 1, wherein the cooling and drying module comprises a cooling unit, a gas-water separation unit, and a drying unit;
the cooling unit is communicated with the preheating module and is used for liquefying water vapor doped in the deoxygenated hydrogen introduced by the preheating module;
the gas-water separation unit is communicated with the cooling unit and is used for filtering liquid water mixed in the deoxygenated hydrogen introduced by the cooling unit;
the drying unit is communicated with the gas-water separation unit and is used for adsorbing a small amount of water vapor doped in the deoxygenated hydrogen introduced by the gas-water separation unit to obtain the pure hydrogen.
7. A hydrogen purification apparatus according to claim 6, wherein the drying unit comprises a vent; the exhaust port comprises a first exhaust branch port and a second exhaust branch port;
the first exhaust branch port is communicated with the preheating module, and the second exhaust branch port is communicated with the pure hydrogen gas guide pipe.
8. The hydrogen purification apparatus according to claim 6, wherein the cooling unit comprises a deoxygenation cooler;
the gas-water separation unit comprises a gas-water separator;
the drying unit includes a dryer.
9. A hydrogen purification apparatus as claimed in claim 1, wherein the deoxygenation module comprises a deoxygenator.
10. A system for producing hydrogen by electrolyzing water, comprising the hydrogen purification apparatus according to any one of claims 1 to 9.
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| CN202221274759.5U CN217627625U (en) | 2022-05-24 | 2022-05-24 | Hydrogen purification device and water electrolysis hydrogen production system |
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| CN202221274759.5U CN217627625U (en) | 2022-05-24 | 2022-05-24 | Hydrogen purification device and water electrolysis hydrogen production system |
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