CN216878638U - Hydrogen purification system and water electrolysis hydrogen production system - Google Patents
Hydrogen purification system and water electrolysis hydrogen production system Download PDFInfo
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- CN216878638U CN216878638U CN202122641908.9U CN202122641908U CN216878638U CN 216878638 U CN216878638 U CN 216878638U CN 202122641908 U CN202122641908 U CN 202122641908U CN 216878638 U CN216878638 U CN 216878638U
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Abstract
The present disclosure relates to a hydrogen purification system and a hydrogen production system by electrolyzing water, the hydrogen purification system includes three dryers, and the three dryers share one regeneration cycle module, which significantly reduces the number of heaters and coolers, and therefore, the manufacturing cost of the system is low; meanwhile, the first gas-gas heat exchanger is arranged in the regeneration circulating system, so that heat exchange can be carried out between the low-temperature regenerated hydrogen before regeneration and the high-temperature regenerated tail gas after regeneration, on one hand, the waste heat of the high-temperature regenerated tail gas can be fully utilized, on the other hand, the power consumption of a follow-up heater and a regeneration cooler can be obviously reduced, and therefore, the energy consumption of the system is low.
Description
Technical Field
The disclosure relates to the technical field of hydrogen purification, in particular to a hydrogen purification system and a water electrolysis hydrogen production system.
Background
The hydrogen gas generated by water electrolysis contains trace oxygen and a large amount of water vapor, and the hydrogen gas generated by water electrolysis needs to be purified in order to obtain high-purity hydrogen gas.
Chinese patent CN1920100A discloses a device for continuously purifying water electrolysis hydrogen, which comprises 3 drying towers, each drying tower is provided with an electric heating rod for heating and creating a high temperature environment when the drying agent in the drying tower is regenerated; and the outside of each drying tower is respectively connected with a regeneration cooler for cooling high-temperature regeneration tail gas generated in the regeneration process of the drying agent.
The device has more electric heating rods and coolers, and does not fully utilize the waste heat of the high-temperature regeneration tail gas, so the device has the problems of higher manufacturing cost and energy waste.
SUMMERY OF THE UTILITY MODEL
The purpose of this disclosure is to solve the problem that manufacturing cost is higher and the energy is extravagant that exists among the current hydrogen purification device, provides a hydrogen purification system and electrolytic water hydrogen manufacturing system.
In order to achieve the above object, the present disclosure provides a hydrogen purification system for purifying hydrogen to be purified to form purified hydrogen, the hydrogen purification system comprising:
the device comprises a deoxidation module, a drying module and a regeneration circulation module which are sequentially communicated, wherein the drying module comprises a first dryer, a second dryer and a third dryer which are connected in parallel; the regeneration cycle module comprises a heater and a first gas-gas heat exchanger with a first gas channel and a second gas channel;
the hydrogen purification system further comprises:
the first gas limiting module is used for enabling the hydrogen to be purified to sequentially flow through the deoxidation module and the first dryer to form a purification channel so as to obtain the purified hydrogen;
and the second gas limiting module is used for enabling part of the purified hydrogen to sequentially flow through the first gas channel of the first gas-gas heat exchanger, the heater, the second dryer, the second gas channel of the first gas-gas heat exchanger and the third dryer to form a regeneration channel so as to obtain the recovered hydrogen.
Optionally, the first dryer, the second dryer and the third dryer each have a first opening and a second opening, wherein the first opening of the first dryer, the first opening of the second dryer and the first opening of the third dryer can each be in communication with the outlet of the deoxygenation module, the second gas channel inlet of the first gas-gas heat exchanger and the second gas channel outlet of the first gas-gas heat exchanger, respectively; the second opening of the first dryer, the second opening of the second dryer, and the second opening of the third dryer can each be in communication with a purified hydrogen outlet, a first gas passage inlet of the first gas-gas heat exchanger, an outlet of the heater, and a recovered hydrogen outlet, respectively; the outlet of the first gas channel of the first gas-gas heat exchanger is communicated with the inlet of the heater;
wherein the purified hydrogen outlet is used for outputting the purified hydrogen, and the recovered hydrogen outlet is used for outputting the recovered hydrogen.
Optionally, the first gas limiting module comprises at least one first control valve and the second gas limiting module comprises at least one second control valve;
the first control valves are arranged between the outlet of the deoxidation module and the first opening of each dryer and between the purified hydrogen outlet and the second opening of each dryer;
the second control valves are arranged between the first gas channel inlet of the first gas-gas heat exchanger and the second opening of each dryer, between the outlet of the heater and the second opening of each dryer, between the second gas channel inlet of the first gas-gas heat exchanger and the first opening of each dryer, between the second gas channel outlet of the first gas-gas heat exchanger and the first opening of each dryer, and between the recovered hydrogen outlet and the second opening of each dryer.
Optionally, the regeneration cycle module further comprises:
the cooler is used for cooling the second dryer;
and the third gas limiting module is used for enabling part of the purified hydrogen to sequentially flow through the cooler, the second dryer, the second gas channel of the first gas-gas heat exchanger and the third dryer to form a regeneration cooling channel.
Alternatively, the inlet of the cooler may be in communication with the second opening of the first dryer, the second opening of the second dryer, and the second opening of the third dryer, respectively, and the outlet of the cooler may be in communication with the second opening of the first dryer, the second opening of the second dryer, and the second opening of the third dryer, respectively.
Optionally, the third air restriction module comprises at least one third control valve, which is arranged between the inlet of the cooler and the second opening of each dryer, and/or between the outlet of the cooler and the second opening of each dryer.
Optionally, the regeneration cycle module further comprises a regeneration cooler and a first steam-water separator, an inlet of the regeneration cooler is communicated with the outlet of the second gas passage of the first gas-gas heat exchanger, an outlet of the regeneration cooler is communicated with an inlet of the first steam-water separator, and an outlet of the first steam-water separator can be respectively communicated with the first opening of the first dryer, the first opening of the second dryer or the first opening of the third dryer.
Optionally, the deoxygenation module comprises a second gas-gas heat exchanger and a deoxygenator, the second gas-gas heat exchanger having a first gas channel and a second gas channel, wherein a first gas channel outlet of the second gas-gas heat exchanger is communicated with an inlet of the deoxygenator, an outlet of the deoxygenator is communicated with a second gas channel inlet of the second gas-gas heat exchanger, and a second gas channel outlet of the second gas-gas heat exchanger is capable of being communicated with the first opening of the first dryer, the first opening of the second dryer, or the first opening of the third dryer, respectively.
Optionally, the hydrogen purification system further comprises a cooling condenser and a second steam-water separator, wherein an inlet of the cooling condenser is communicated with an outlet of the second gas passage of the second gas-gas heat exchanger, an outlet of the cooling condenser is communicated with an inlet of the second steam-water separator, and an outlet of the second steam-water separator can be respectively communicated with the first opening of the first dryer, the first opening of the second dryer or the first opening of the third dryer.
Optionally, a first condensed water discharge pipeline is further arranged between the second gas channel inlet of the first gas-gas heat exchanger and the first opening of each dryer, and one end of the first condensed water discharge pipeline is simultaneously communicated with the second gas channel inlet of the first gas-gas heat exchanger and the first opening of each dryer;
a second condensate water discharge pipeline is also arranged between the second gas channel inlet of the second gas-gas heat exchanger and the outlet of the deoxygenator, and is simultaneously communicated with the second gas channel inlet of the second gas-gas heat exchanger and the outlet of the deoxygenator;
and the first condensate water discharge pipeline and the second condensate water discharge pipeline are both provided with control valves.
Optionally, a first temperature measuring device is arranged on the deoxygenator, a second temperature measuring device is arranged at an outlet of the deoxygenator, a third temperature measuring device is arranged at a first opening of the first dryer, a fourth temperature measuring device is arranged at a first opening of the second dryer, a fifth temperature measuring device is arranged at a first opening of the third dryer, a sixth temperature measuring device is arranged on the heater, and a seventh temperature measuring device is arranged at an outlet of the heater.
Optionally, the first dryer, the second dryer and the third dryer are all cylindrical structures, and a molecular sieve drying agent is arranged in each cylinder.
The present disclosure further provides a water electrolysis hydrogen production system, which includes a water electrolysis hydrogen production module and any one of the above hydrogen purification systems, wherein the water electrolysis hydrogen production module is communicated with the deoxidation module of the hydrogen purification system.
Through the technical scheme, the three driers in the hydrogen purification system disclosed by the invention share one regeneration circulation module, so that the number of heaters and coolers is remarkably reduced, and the manufacturing cost of the system is lower; meanwhile, the first gas-gas heat exchanger is arranged in the regeneration circulating system, so that heat exchange can be carried out between the low-temperature regenerated hydrogen before regeneration and the high-temperature regenerated tail gas after regeneration, on one hand, the waste heat of the high-temperature regenerated tail gas can be fully utilized, on the other hand, the power consumption of a follow-up heater and a regeneration cooler can be obviously reduced, and therefore, the energy consumption of the system is low.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic diagram of the structure of a hydrogen purification system of the present disclosure.
Description of the reference numerals
1 first dryer 2 second dryer
3 third dryer 4 first gas-gas heat exchanger
5 heater 6 regenerative cooler
7 first steam-water separator 8 cooler
9 third steam-water separator 10 second gas-gas heat exchanger
11 deoxygenator 12 cooling condenser
13 second steam-water separator 14 first condensate discharge pipe
15 second condensate water discharge pipeline 16 first temperature measuring equipment
17 second temperature measuring device 18 third temperature measuring device
19 fourth temperature measuring device 20 fifth temperature measuring device
21 sixth temperature measuring device 22 seventh temperature measuring device
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
A first aspect of the present disclosure provides a hydrogen purification system for purifying hydrogen to be purified to form purified hydrogen, as shown in fig. 1, the hydrogen purification system may include: the device comprises a deoxidation module, a drying module and a regeneration circulation module which are sequentially communicated, wherein the drying module comprises a first dryer 1, a second dryer 2 and a third dryer 3 which are connected in parallel; the regeneration cycle module comprises a heater 5 and a first gas-gas heat exchanger 4 with a first gas channel and a second gas channel;
the hydrogen purification system further comprises: the first gas limiting module is used for enabling the hydrogen to be purified to sequentially flow through the deoxidation module and the first dryer 1 to form a purification channel so as to obtain the purified hydrogen; and the second gas limiting module is used for allowing part of the purified hydrogen to sequentially flow through the first gas channel of the first gas-gas heat exchanger 4, the heater 5, the second dryer 2, the second gas channel of the first gas-gas heat exchanger 4 and the third dryer 3 to form a regeneration channel, so that the recovered hydrogen is obtained.
According to the present disclosure, the first dryer 1, the second dryer 2 and the third dryer 3 each have a first opening and a second opening, wherein the first opening of the first dryer 1, the first opening of the second dryer 2 and the first opening of the third dryer 3 are communicable with the outlet of the deoxidation module, the second gas channel inlet of the first gas-gas heat exchanger 4 and the second gas channel outlet of the first gas-gas heat exchanger 4, respectively; the second opening of the first dryer 1, the second opening of the second dryer 2, and the second opening of the third dryer 3 can be communicated with a purified hydrogen outlet, the first gas passage inlet of the first gas-gas heat exchanger 4, the outlet of the heater 5, and a recovered hydrogen outlet, respectively; the outlet of the first gas channel of the first gas-gas heat exchanger is communicated with the inlet of the heater; wherein the purified hydrogen outlet is used for outputting the purified hydrogen, and the recovered hydrogen outlet is used for outputting the recovered hydrogen.
In this disclosure, specifically, each opening (including each outlet and each inlet) may be communicated with each other through a gas transmission pipeline, and when the plurality of openings are communicated with the same other openings at the same time, the plurality of openings may be respectively and independently communicated with the other openings, and the plurality of openings may also be communicated with the other openings through a gas transmission pipeline after being connected in parallel with each other. In order to save the manufacturing cost of the system and simplify the complexity of the system, when a plurality of openings are communicated with the same other openings at the same time, the plurality of openings are preferably connected in parallel and then communicated with the other openings through a gas conveying pipeline.
Illustratively, as shown in fig. 1, in the hydrogen purification system of the present disclosure, after the first opening of the first dryer, the first opening of the second dryer, and the first opening of the third dryer are connected in parallel with each other, they are respectively communicated with the outlet of the deoxygenation module, the second gas channel inlet of the first gas-gas heat exchanger, and the second gas channel outlet of the first gas-gas heat exchanger through different pipelines; the second opening of the first dryer, the second opening of the second dryer and the second opening of the third dryer can be connected in parallel, and then communicated with the purified hydrogen outlet, the first gas channel inlet of the first gas heat exchanger, the outlet of the heater and the recycled hydrogen outlet through different pipelines.
The hydrogen purification system of the present disclosure may be particularly used for performing water electrolysis hydrogen purification, wherein the deoxidation module may be used to remove a small amount of oxygen contained in the water electrolysis hydrogen, the drying module may be used to remove a large amount of water vapor contained in the water electrolysis hydrogen, and the regeneration circulation module may be used to heat the cold air stream before regeneration and cool the hot air stream after regeneration in the regeneration process of the drying agent.
The hydrogen purification system can simultaneously realize purification treatment of hydrogen to be purified, regeneration treatment of a desiccant to be generated in the dryer and recovery treatment of regeneration tail gas, specifically, any one dryer can be used for purification treatment of the hydrogen to be purified, regeneration treatment of the desiccant to be generated in another dryer is simultaneously performed, and drying recovery treatment of the regeneration tail gas is performed by using the residual dryers.
Specifically, when the hydrogen purification system disclosed by the disclosure operates, hydrogen to be purified can enter the deoxidation module for deoxidation treatment to obtain deoxidized hydrogen; enabling the deoxidized hydrogen to enter any one dryer from a first opening of the dryer for drying treatment to obtain purified hydrogen, dividing a part of the purified hydrogen into low-temperature regenerated hydrogen, enabling the low-temperature regenerated hydrogen to enter a first gas channel of a first gas heat exchanger from a first gas channel inlet of the first gas heat exchanger for heat exchange treatment, and enabling the low-temperature regenerated hydrogen to enter a heater through a first gas channel outlet of the first gas heat exchanger and an inlet of the heater for heating treatment to obtain high-temperature regenerated hydrogen; then, high-temperature regenerated hydrogen enters the other dryer from a second opening of the other dryer, the molecular sieve drying agent to be regenerated in the dryer is dried and regenerated to obtain high-temperature regenerated tail gas, the obtained high-temperature regenerated tail gas flows out from a first opening of the dryer, then flows into a second gas channel of the first gas heat exchanger from a second gas channel inlet of the first gas heat exchanger to exchange heat with low-temperature regenerated hydrogen in a first gas channel of the first gas heat exchanger, and flows out from a second gas channel outlet of the first gas heat exchanger to obtain low-temperature regenerated tail gas; then, making the low-temperature regeneration tail gas flow into the dryer from the first opening of the residual dryer for drying treatment, and then flow out from the second opening of the dryer to obtain recovered hydrogen, and making the recovered hydrogen flow out from a recovered hydrogen outlet; and finally, combining the purified hydrogen flowing out of the purified hydrogen outlet and the recovered hydrogen flowing out of the recovered hydrogen outlet to obtain purified hydrogen.
The above operation processes can be alternately executed in each dryer, so as to realize continuous purification of the hydrogen to be purified, for example, the deoxidized hydrogen can be dried in the first dryer, the molecular sieve drying agent to be generated in the second dryer is dried and regenerated, and the low-temperature regeneration tail gas is dried in the first dryer; then, drying the deoxidized hydrogen in a second dryer, drying and regenerating the to-be-regenerated molecular sieve drying agent in a third dryer, and drying the low-temperature regeneration tail gas in a first dryer; and finally, drying the deoxidized hydrogen in a third dryer, drying and regenerating the to-be-regenerated molecular sieve drying agent in the first dryer, and drying the low-temperature regeneration tail gas in a second dryer. Thereby forming a closed loop circulation process, and realizing the continuous purification of the hydrogen to be purified.
In the present disclosure, three dryers in the hydrogen purification system share one regeneration cycle module, which significantly reduces the number of heaters and coolers, and thus, the system is manufactured at a low cost; meanwhile, the first gas-gas heat exchanger is arranged in the regeneration circulating system, so that heat exchange can be carried out between the low-temperature regenerated hydrogen before regeneration and the high-temperature regenerated tail gas after regeneration, on one hand, the waste heat of the high-temperature regenerated tail gas can be fully utilized, on the other hand, the power consumption of a follow-up heater and a regeneration cooler can be obviously reduced, and therefore, the energy consumption of the system is low.
According to the present disclosure, the first gas restriction module may include at least one first control valve, and the second gas restriction module may include at least one second control valve; the first control valve may be disposed between the outlet of the deoxygenation module and the first opening of each dryer and between the purified hydrogen outlet and the second opening of each dryer; the second control valves may be disposed between the first gas passage inlet of the first gas-gas heat exchanger 4 and the second opening of each dryer, between the outlet of the heater 5 and the second opening of each dryer, between the second gas passage inlet of the first gas-gas heat exchanger 4 and the first opening of each dryer, between the second gas passage outlet of the first gas-gas heat exchanger 4 and the first opening of each dryer, and between the recovered hydrogen gas outlet and the second opening of each dryer.
In the present disclosure, in particular, the types of the first control valve and the second control valve may be selected within a certain range, and may be, for example, a pneumatic ball valve. The flow paths between the outlets of the deoxidation module and the first opening of the first dryer and the first control valve between the outlets of the deoxidation module and the first opening of the second dryer and the first opening of the third dryer are opened, and the flow paths between the deoxidation module and the second dryer and the third dryer are closed, so that the deoxidized hydrogen enters the first dryer and does not enter the second dryer and the third dryer.
According to the present disclosure, the regeneration cycle module may further include: a cooler 8 for cooling the second dryer 2; and the third gas limiting module is used for enabling part of the purified hydrogen to sequentially flow through the cooler 8, the second dryer 2, the second gas channel of the first gas-gas heat exchanger 4 and the third dryer 3 to form a regeneration cooling channel.
Wherein the inlet of the cooler 8 is communicable with the second opening of the first dryer 1, the second opening of the second dryer 2, and the second opening of the third dryer 3, respectively, and the outlet of the cooler 8 is communicable with the second opening of the first dryer 1, the second opening of the second dryer 2, and the second opening of the third dryer 3, respectively.
In the present disclosure, in particular, the type of the cooler 8 may be selected within a certain range, and may be, for example, a cold blowing cooler, which is mainly used to perform a temperature reduction treatment on a part of purified hydrogen from a dryer for drying hydrogen to be purified after a period of time for regenerating a drying agent, and to make the part of purified hydrogen after the temperature reduction treatment enter the dryer for regenerating the drying agent, so as to perform rapid cooling on the regenerated high-temperature regenerated drying agent, which can shorten the duration of the regeneration process on one hand, and can make the regenerated drying agent in a low-temperature state to increase the adsorption capacity thereof on the other hand.
That is, the regeneration process of the spent desiccant in the system of the present disclosure includes at least two operations, the first operation is to use the high-temperature regenerated hydrogen heated by the first air-to-air heat exchanger and the heater to remove moisture in the spent desiccant, and the second operation is to use the low-temperature purified hydrogen cooled by the cooler to rapidly cool the high-temperature regenerated desiccant obtained after the first operation.
According to the present disclosure, the third air limiting module may comprise at least one third control valve, which may be arranged between the inlet of the cooler 8 and the second opening of each dryer, and/or between the outlet of the cooler 8 and the second opening of each dryer. By the regulation of the third control valve, it is possible to cause the part of the purified hydrogen from the dryer for drying the hydrogen to be purified to flow to the cooler 8 without flowing to the first gas channel of the first gas-gas heat exchanger 4.
According to the present disclosure, the regeneration cycle module may further include a regeneration cooler 6 and a first steam-water separator 7, an inlet of the regeneration cooler 6 is communicated with the second gas passage outlet of the first gas-gas heat exchanger 4, an outlet of the regeneration cooler 6 is communicated with an inlet of the first steam-water separator 7, and an outlet of the first steam-water separator 7 may be respectively communicated with the first opening of the first dryer 1, the first opening of the second dryer 2, or the first opening of the third dryer 3.
According to the present disclosure, the deoxidation module may further comprise a second gas-gas heat exchanger 10 and a deoxygenator 11, the second gas-gas heat exchanger 10 having a first gas channel and a second gas channel, wherein a first gas channel outlet of the second gas-gas heat exchanger 10 is communicated with an inlet of the deoxygenator 11, an outlet of the deoxygenator 11 is communicated with a second gas channel inlet of the second gas-gas heat exchanger 10, and a second gas channel outlet of the second gas-gas heat exchanger 10 may be respectively communicated with the first opening of the first dryer 1, the first opening of the second dryer 2 and the first opening of the third dryer 3.
In the present disclosure, specifically, due to the arrangement of the second gas-gas heat exchanger, the hydrogen hot gas flow after deoxygenation in the deoxygenator can flow back to the second gas channel of the second gas-gas heat exchanger, and heat exchange heating is performed on the low-temperature hydrogen to be purified flowing through the first gas channel, so that the temperature of the hydrogen to be purified is raised, and the temperature of the deoxygenated hydrogen is reduced, which can effectively reduce the power consumption of the deoxygenator and the subsequent cooling condenser.
According to the present disclosure, the hydrogen purification system may further include a cooling condenser 12 and a second steam-water separator 13, wherein an inlet of the cooling condenser 12 is communicated with the second gas passage outlet of the second gas-gas heat exchanger 10, an outlet of the cooling condenser 12 is communicated with an inlet of the second steam-water separator 13, and an outlet of the second steam-water separator 13 may be respectively communicated with the first opening of the first dryer 1, the first opening of the second dryer 2, and the first opening of the third dryer 3.
According to the present disclosure, a first condensed water discharge pipeline 14 may be further disposed between the second gas channel inlet of the first gas-gas heat exchanger 4 and the first opening of each dryer, and one end of the first condensed water discharge pipeline 14 is simultaneously communicated with the second gas channel inlet of the first gas-gas heat exchanger 4 and the first opening of each dryer; a second condensed water discharge pipeline 15 may be further disposed between the second gas channel inlet of the second gas-gas heat exchanger 10 and the outlet of the deoxygenator 11, and the second condensed water discharge pipeline 15 is simultaneously communicated with the second gas channel inlet of the second gas-gas heat exchanger 10 and the outlet of the deoxygenator 11. The first condensate water discharge pipeline and the second condensate water discharge pipeline are both used for discharging accumulated condensate water in the gas flow path, and the condensate water is prevented from entering the gas-gas heat exchanger to influence the heat exchange effect.
According to the present disclosure, a control valve may be provided on each of the first and second condensate discharging pipes 14 and 15.
According to the disclosure, a first temperature measuring device 16 may be disposed on the deoxygenator 11, a second temperature measuring device 17 may be disposed at an outlet of the deoxygenator 11, a third temperature measuring device 18 may be disposed at a first opening of the first dryer 1, a fourth temperature measuring device 19 may be disposed at a first opening of the second dryer 2, a fifth temperature measuring device 20 may be disposed at a first opening of the third dryer 3, a sixth temperature measuring device 21 may be disposed on the heater 5, and a seventh temperature measuring device 22 may be disposed at an outlet of the heater 5.
According to the present disclosure, the first dryer 1, the second dryer 2, and the third dryer 3 are all cylindrical structures, and a molecular sieve desiccant is provided in the cylinder. Because each drier in the system disclosed by the invention shares one gas-gas heat exchanger and one heater, each drier does not need to be provided with an electric heating device, and the energy-saving and emission-reducing effects are obvious.
A second aspect of the present disclosure provides a water electrolysis hydrogen production system, which may include a water electrolysis hydrogen production module and the hydrogen purification system described in any one of the above, where the water electrolysis hydrogen production module is communicated with the deoxidation module of the hydrogen purification system.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (13)
1. A hydrogen purification system for purifying hydrogen gas to be purified to form purified hydrogen gas, the hydrogen purification system comprising:
the device comprises a deoxidation module, a drying module and a regeneration circulation module which are sequentially communicated, wherein the drying module comprises a first dryer, a second dryer and a third dryer which are connected in parallel; the regeneration cycle module comprises a heater and a first gas-gas heat exchanger with a first gas channel and a second gas channel;
the hydrogen purification system further comprises:
the first gas limiting module is used for enabling the hydrogen to be purified to sequentially flow through the deoxidation module and the first dryer to form a purification channel so as to obtain the purified hydrogen;
and the second gas limiting module is used for enabling part of the purified hydrogen to sequentially flow through the first gas channel of the first gas-gas heat exchanger, the heater, the second dryer, the second gas channel of the first gas-gas heat exchanger and the third dryer to form a regeneration channel so as to obtain recovered hydrogen.
2. A hydrogen purification system according to claim 1, wherein the first, second and third dryers each have a first and second opening, wherein the first opening of the first dryer, the first opening of the second dryer and the first opening of the third dryer are capable of communicating with the outlet of the deoxygenation module, the second gas channel inlet of the first gas-gas heat exchanger and the second gas channel outlet of the first gas-gas heat exchanger, respectively; the second opening of the first dryer, the second opening of the second dryer and the second opening of the third dryer can be respectively communicated with a purified hydrogen outlet, a first gas channel inlet of the first gas-gas heat exchanger, an outlet of the heater and a recovered hydrogen outlet; the outlet of the first gas channel of the first gas-gas heat exchanger is communicated with the inlet of the heater;
wherein the purified hydrogen outlet is used for outputting the purified hydrogen, and the recovered hydrogen outlet is used for outputting the recovered hydrogen.
3. The hydrogen purification system according to claim 2, wherein the first gas limiting module comprises at least one first control valve and the second gas limiting module comprises at least one second control valve;
the first control valves are arranged between the outlet of the deoxidation module and the first opening of each dryer and between the purified hydrogen outlet and the second opening of each dryer;
the second control valves are arranged between the inlet of the first gas channel of the first gas-gas heat exchanger and the second opening of each drier, between the outlet of the heater and the second opening of each drier, between the inlet of the second gas channel of the first gas-gas heat exchanger and the first opening of each drier, between the outlet of the second gas channel of the first gas-gas heat exchanger and the first opening of each drier, and between the outlet of the recovered hydrogen and the second opening of each drier.
4. The hydrogen purification system of claim 1, wherein the regeneration cycle module further comprises:
the cooler is used for cooling the second dryer;
and the third gas limiting module is used for enabling part of the purified hydrogen to sequentially flow through the cooler, the second dryer, the second gas channel of the first gas-gas heat exchanger and the third dryer to form a regeneration cooling channel.
5. A hydrogen purification system according to claim 4, wherein the inlet of the cooler is capable of communicating with the second opening of the first dryer, the second opening of the second dryer and the second opening of the third dryer, respectively, and the outlet of the cooler is capable of communicating with the second opening of the first dryer, the second opening of the second dryer and the second opening of the third dryer, respectively.
6. A hydrogen purification system according to claim 5, characterized in that the third gas limiting module comprises at least one third control valve, which is arranged between the inlet of the cooler and the second opening of each dryer and/or between the outlet of the cooler and the second opening of each dryer.
7. A hydrogen purification system according to claim 1, wherein the regeneration circulation module further comprises a regeneration cooler and a first steam-water separator, an inlet of the regeneration cooler being in communication with the outlet of the second gas passage of the first gas-gas heat exchanger, an outlet of the regeneration cooler being in communication with an inlet of the first steam-water separator, an outlet of the first steam-water separator being capable of being in communication with the first opening of the first drier, the first opening of the second drier or the first opening of the third drier, respectively.
8. A hydrogen purification system according to claim 1, wherein the deoxygenation module comprises a second gas-gas heat exchanger having a first gas passage and a second gas passage and a deoxygenator, wherein the first gas passage outlet of the second gas-gas heat exchanger is in communication with the inlet of the deoxygenator and the outlet of the deoxygenator is in communication with the second gas passage inlet of the second gas-gas heat exchanger, and wherein the second gas passage outlet of the second gas-gas heat exchanger is capable of being in communication with the first opening of the first desiccator, the first opening of the second desiccator or the first opening of the third desiccator, respectively.
9. A hydrogen purification system according to claim 8, further comprising a cooling condenser and a second vapor-water separator, wherein the inlet of the cooling condenser is in communication with the outlet of the second gas passage of the second gas-gas heat exchanger, the outlet of the cooling condenser is in communication with the inlet of the second vapor-water separator, and the outlet of the second vapor-water separator is capable of being in communication with the first opening of the first drier, the first opening of the second drier or the first opening of the third drier, respectively.
10. A hydrogen purification system as claimed in claim 8, wherein a first condensed water discharge conduit is further provided between the second gas channel inlet of the first gas-gas heat exchanger and the first opening of each drier, and one end of the first condensed water discharge conduit is simultaneously communicated with the second gas channel inlet of the first gas-gas heat exchanger and the first opening of each drier;
a second condensate water discharge pipeline is also arranged between the second gas channel inlet of the second gas-gas heat exchanger and the outlet of the deoxygenator, and is simultaneously communicated with the second gas channel inlet of the second gas-gas heat exchanger and the outlet of the deoxygenator;
and the first condensate water discharge pipeline and the second condensate water discharge pipeline are both provided with control valves.
11. A hydrogen purification system as claimed in claim 8, wherein a first temperature measuring device is disposed on the deoxygenator, a second temperature measuring device is disposed at the outlet of the deoxygenator, a third temperature measuring device is disposed at the first opening of the first dryer, a fourth temperature measuring device is disposed at the first opening of the second dryer, a fifth temperature measuring device is disposed at the first opening of the third dryer, a sixth temperature measuring device is disposed on the heater, and a seventh temperature measuring device is disposed at the outlet of the heater.
12. A hydrogen purification system as claimed in any one of claims 1 to 11, wherein the first, second and third dryers are all of cylindrical construction, with a molecular sieve desiccant disposed within the cylinder.
13. A water electrolysis hydrogen production system is characterized by comprising a water electrolysis hydrogen production module and a hydrogen purification system as claimed in any one of claims 1-12, wherein the water electrolysis hydrogen production module is communicated with the deoxidation module of the hydrogen purification system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382362A (en) * | 2022-09-19 | 2022-11-25 | 清华四川能源互联网研究院 | Hydrogen drying system |
| CN115449845A (en) * | 2022-09-19 | 2022-12-09 | 三峡科技有限责任公司 | Hydrogen purification system with automatic regulating capacity |
| CN116497400A (en) * | 2023-06-30 | 2023-07-28 | 中石油深圳新能源研究院有限公司 | System and method for recovering waste heat of drying tower and for insulating and heating electrolyte |
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2021
- 2021-10-30 CN CN202122641908.9U patent/CN216878638U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382362A (en) * | 2022-09-19 | 2022-11-25 | 清华四川能源互联网研究院 | Hydrogen drying system |
| CN115449845A (en) * | 2022-09-19 | 2022-12-09 | 三峡科技有限责任公司 | Hydrogen purification system with automatic regulating capacity |
| CN115449845B (en) * | 2022-09-19 | 2023-12-19 | 三峡科技有限责任公司 | Hydrogen purification system with automatic adjustment capability |
| CN116497400A (en) * | 2023-06-30 | 2023-07-28 | 中石油深圳新能源研究院有限公司 | System and method for recovering waste heat of drying tower and for insulating and heating electrolyte |
| CN116497400B (en) * | 2023-06-30 | 2023-09-19 | 中石油深圳新能源研究院有限公司 | System and method for recovering waste heat of drying tower and for insulating and heating electrolyte |
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