CN218232600U - Processing and separating system for electrolytic hydrogen production and electrolytic hydrogen production system - Google Patents
Processing and separating system for electrolytic hydrogen production and electrolytic hydrogen production system Download PDFInfo
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- CN218232600U CN218232600U CN202222117119.XU CN202222117119U CN218232600U CN 218232600 U CN218232600 U CN 218232600U CN 202222117119 U CN202222117119 U CN 202222117119U CN 218232600 U CN218232600 U CN 218232600U
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Abstract
The utility model discloses a processing piece-rate system and electrolytic hydrogen manufacturing system of electrolytic hydrogen manufacturing, this processing piece-rate system of electrolytic hydrogen manufacturing includes: the multistage heat exchange device comprises a heat exchanger and a cooler, wherein a gas inlet of the heat exchanger is communicated with the electrolysis device, a gas outlet of the heat exchanger is communicated with a gas inlet of the cooler, the heat exchanger is used for carrying out heat exchange treatment on a gas-liquid mixture output by the electrolysis device and then outputting the gas-liquid mixture, and the cooler is used for cooling treatment on the gas-liquid mixture output by the heat exchanger and then outputting the gas-liquid mixture. The utility model discloses can solve the low problem of system security of current process flow.
Description
Technical Field
The utility model relates to an electrolysis hydrogen manufacturing technical field, in particular to a processing and separating system and an electrolysis hydrogen manufacturing system for electrolysis hydrogen manufacturing.
Background
The 'green hydrogen' generated by generating electricity by utilizing renewable energy sources such as photovoltaic, wind power and the like by adopting a water electrolysis hydrogen production mode is the development direction of the future hydrogen energy sources, and the water electrolysis hydrogen production device generally comprises an electrolysis unit, a post-treatment unit, a purification unit and an auxiliary unit, wherein the post-treatment separation system comprises the most complex system of the whole hydrogen production system, and the process comprises the steps of separating hydrogen, oxygen and alkali liquor generated by electrolysis, recycling the alkali liquor and respectively carrying out primary purification on the hydrogen and the oxygen.
However, the existing post-treatment unit usually separates hydrogen, oxygen and alkali liquor generated by electrolysis directly or separates the hydrogen, oxygen and alkali liquor after simple cooling treatment, and under a long-time treatment process, the temperature of a gas-liquid mixture is high, so that the separation efficiency of the post-treatment unit is affected, and even the post-treatment unit is seriously corroded, so that the serious system safety problem is caused.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a processing and separating system for electrolytic hydrogen production, aiming at solving the problem of low system safety of the prior process flow.
In order to achieve the above object, the utility model provides a processing piece-rate system of electrolytic hydrogen production is applied to among the electrolytic hydrogen production system, electrolytic hydrogen production system includes electrolytic device, and the processing piece-rate system of electrolytic hydrogen production includes:
the multistage heat exchange device comprises a heat exchanger and a cooler, wherein a gas inlet of the heat exchanger is communicated with the electrolysis device, a gas outlet of the heat exchanger is communicated with a gas inlet of the cooler, the heat exchanger is used for carrying out heat exchange treatment on a gas-liquid mixture output by the electrolysis device and then outputting the gas-liquid mixture, and the cooler is used for cooling treatment on the gas-liquid mixture output by the heat exchanger and then outputting the gas-liquid mixture.
Optionally, the electrolysis device is provided with an oxygen gas outlet, a hydrogen gas outlet, a first liquid inlet and a second liquid inlet;
the processing and separating system for the electrolytic hydrogen production further comprises:
the gas inlet of the oxygen treatment device is communicated with the oxygen gas outlet of the multistage heat exchange device, the gas outlet of the oxygen treatment device is used for being connected to an oxygen collection device, the liquid outlet of the oxygen treatment device is communicated with the first liquid inlet of the electrolysis device, and the oxygen treatment device is used for carrying out gas-liquid separation on the oxygen gas-liquid mixture output by the multistage heat exchange device and sending the oxygen gas after the gas-liquid separation to the oxygen collection device from the gas outlet;
the hydrogen treatment device, hydrogen treatment device's air inlet with multistage heat transfer device's hydrogen gas outlet intercommunication, hydrogen treatment device's gas outlet is used for inserting hydrogen collection device, hydrogen treatment device's liquid outlet with electrolysis unit's second inlet intercommunication, hydrogen treatment device is used for right the hydrogen liquid mixture of multistage heat transfer device output carries out gas-liquid separation to send the hydrogen after the gas-liquid separation to hydrogen collection device from the gas outlet.
Optionally, the multistage heat exchange device comprises:
the gas inlet of the oxygen side heat exchanger is communicated with the oxygen gas outlet of the electrolysis device, the liquid inlet of the oxygen side heat exchanger is communicated with the liquid outlet of the oxygen treatment device, the liquid outlet of the oxygen side heat exchanger is communicated with the first liquid inlet of the electrolysis device, and the oxygen side heat exchanger is used for exchanging heat between an oxygen gas-liquid mixture entering from the gas inlet and liquid entering from the liquid inlet;
an air inlet of the oxygen side cooler is communicated with an air outlet of the oxygen side heat exchanger, an air outlet of the oxygen side cooler is communicated with an air inlet of the oxygen treatment device, an air inlet of the oxygen side cooler is used for being connected with a coolant supplementing device, an air outlet of the oxygen side cooler is used for being connected with a coolant collecting device, and the oxygen side cooler is used for carrying out cooling treatment on an oxygen liquid mixture flowing in from the air inlet and then conveying the oxygen liquid mixture to the oxygen treatment device;
the gas inlet of the hydrogen side heat exchanger is communicated with the hydrogen gas outlet of the electrolysis device, the liquid inlet of the hydrogen side heat exchanger is communicated with the liquid outlet of the hydrogen treatment device, the liquid outlet of the hydrogen side heat exchanger is communicated with the first liquid inlet of the electrolysis device, and the hydrogen side heat exchanger is used for exchanging heat between a hydrogen gas liquid mixture entering from the gas inlet and liquid entering from the liquid inlet;
the hydrogen side cooler, the air inlet of hydrogen side cooler with the gas outlet intercommunication of hydrogen side heat exchanger, the gas outlet of hydrogen side cooler with hydrogen processing apparatus's air inlet intercommunication, the inlet of hydrogen side cooler is used for inserting coolant supplementary device, the liquid outlet of hydrogen side cooler is used for inserting coolant collection device, the hydrogen side cooler is used for carrying to after cooling treatment to the hydrogen liquid mixture who flows into from the air inlet, carry to hydrogen processing apparatus.
Optionally, the multistage heat exchange device further comprises:
a liquid inlet of the oxygen side cooling pipeline is communicated with a liquid inlet of the oxygen side cooler, and a liquid outlet of the oxygen side cooling pipeline is communicated with a liquid outlet of the oxygen side cooler;
an oxygen side temperature control valve group arranged on the oxygen side cooling pipeline and used for controlling the on/off of the oxygen side cooling pipeline;
a liquid inlet of the hydrogen side cooling pipeline is communicated with a liquid inlet of the hydrogen side cooler, and a liquid outlet of the hydrogen side cooling pipeline is communicated with a liquid outlet of the hydrogen side cooler;
and the hydrogen side temperature control valve group is arranged on the hydrogen side cooling pipeline and is used for controlling the on/off of the hydrogen side cooling pipeline.
Optionally, the oxygen side temperature control valve group is further used for detecting the temperature of an oxygen side pipeline between the oxygen side cooler and the electrolysis device and controlling the on/off of the oxygen side cooling pipeline according to the temperature of the oxygen side pipeline so as to control the flow of coolant flowing through the oxygen side cooler;
the hydrogen side temperature control valve group is also used for detecting the temperature of a hydrogen side pipeline between the hydrogen side cooler and the electrolysis device, and controlling the on/off of the hydrogen side cooling pipeline according to the temperature of the hydrogen side pipeline so as to control the flow of coolant flowing through the hydrogen side cooler.
Optionally, the processing and separating system for producing hydrogen by electrolysis further comprises:
the hydrogen-oxygen control valve group is provided with an oxygen side pressure control end and a hydrogen side pressure control end, the oxygen side pressure control end of the hydrogen-oxygen control valve group is arranged between the gas outlet of the oxygen treatment device and the oxygen collection device, and the hydrogen side pressure control end of the hydrogen-oxygen control valve group is arranged between the gas outlet of the hydrogen treatment device and the hydrogen collection device;
the hydrogen and oxygen control valve group is used for controlling the connection/disconnection of a pipeline between the oxygen treatment device and the oxygen collection device or controlling the connection/disconnection of a pipeline between the hydrogen treatment device and the hydrogen collection device, so that the difference value between the pressure in the oxygen treatment device and the pressure in the hydrogen treatment device is smaller than a preset pressure difference value.
Optionally, the process separation system for the electrolytic production of hydrogen further comprises:
the liquid pump is arranged at the oxygen side, a liquid inlet of the liquid pump at the oxygen side is communicated with a liquid outlet of the oxygen treatment device, a liquid outlet of the liquid pump at the oxygen side is communicated with a first liquid inlet of the electrolysis device, and the liquid pump at the oxygen side is used for conveying liquid obtained after the oxygen treatment device is subjected to gas-liquid separation to the electrolysis device.
And/or the processing and separating system for the electrolytic hydrogen production further comprises:
the liquid pump of hydrogen side, the inlet of hydrogen side liquid pump with hydrogen processing apparatus's liquid outlet intercommunication, the liquid outlet of hydrogen side liquid pump with electrolytic device's second inlet intercommunication, hydrogen side liquid pump be used for with liquid after hydrogen processing apparatus carries out gas-liquid separation is sent to electrolytic device.
Optionally, the process separation system for the electrolytic production of hydrogen further comprises:
the oxygen side flow control valve group is arranged between the liquid outlet of the oxygen treatment device and the first liquid inlet of the electrolysis device, and is used for controlling the connection/disconnection of a pipeline between the liquid outlet of the oxygen treatment device and the first liquid inlet of the electrolysis device and sending liquid obtained after gas-liquid separation of the oxygen treatment device to the electrolysis device when the pipeline is connected;
and/or the processing and separating system for the electrolytic hydrogen production further comprises:
and the hydrogen side flow control valve group is arranged between the liquid outlet of the hydrogen treatment device and the second liquid inlet of the electrolysis device, and is used for controlling the connection/disconnection of a pipeline between the liquid outlet of the hydrogen treatment device and the second liquid inlet of the electrolysis device and sending the liquid after the gas-liquid separation of the hydrogen treatment device to the electrolysis device when the pipeline is connected.
Optionally, when the processing and separating system for electrolytic hydrogen production includes the oxygen-side flow control valve group, a detection end of the oxygen-side flow control valve group is connected to the oxygen processing device, and the oxygen-side flow control valve group is further configured to detect a height of a liquid level in the oxygen processing device, and control a pipeline between a liquid outlet of the oxygen processing device and the first liquid inlet of the electrolysis device to be turned on/off according to the height of the liquid level in the oxygen processing device, so as to control the height of the liquid level in the oxygen processing device to be lower than a first preset height;
when the processing and separating system for electrolytic hydrogen production comprises the hydrogen side flow control valve group, the detection end of the hydrogen side flow control valve group is connected with the hydrogen processing device, the hydrogen side flow control valve group is also used for detecting the height of the liquid level in the hydrogen processing device, and controlling the connection/disconnection of a pipeline between the liquid outlet of the hydrogen processing device and the first liquid inlet of the electrolysis device according to the height of the liquid level in the hydrogen processing device so as to control the height of the liquid level in the hydrogen processing device to be lower than a second preset height.
Optionally, the oxygen treatment device and the hydrogen treatment device are both provided with liquid replenishing ports;
the processing and separating system for the electrolytic hydrogen production further comprises:
the liquid inlet of the pure water tank is used for being connected with a pure water supplementing device, and the pure water tank is used for storing pure water;
and a liquid inlet of the pure water pump is connected with a liquid outlet of the pure water tank, a liquid outlet of the pure water pump is respectively communicated with a liquid supplementing port of the oxygen treatment device and a liquid supplementing port of the hydrogen treatment device, and the pure water pump is used for delivering pure water stored in the pure water tank to the oxygen treatment device and the hydrogen treatment device.
The utility model also provides an electrolytic hydrogen production system, which comprises an electrolytic device and the electrolytic hydrogen production processing and separating system; wherein, the first and the second end of the pipe are connected with each other,
the electrolysis device is provided with an oxygen generating chamber and a hydrogen generating chamber, the oxygen generating chamber is provided with an oxygen gas outlet and a first liquid inlet, the hydrogen generating chamber is provided with a hydrogen gas outlet and a second liquid inlet, and the electrolysis device is used for electrolyzing liquid in the oxygen generating chamber and the hydrogen generating chamber so as to generate oxygen in the oxygen generating chamber and generate hydrogen in the hydrogen generating chamber.
The utility model discloses technical scheme is through setting up multistage heat transfer device to carry out multistage heat transfer to the oxygen liquid mixture and the hydrogen liquid mixture of electrolytic device output and handle the back, export again to oxygen processing apparatus and hydrogen processing apparatus and carry out the separation processing, realized the multistage heat transfer to gas-liquid mixture, can reduce gas-liquid mixture to processing apparatus's corruption, and improve the separation effect to gas-liquid mixture, solved the problem that current process flow's system security is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a functional block diagram of an embodiment of the separation system for hydrogen production by electrolysis according to the present invention;
FIG. 2 is a schematic diagram of functional modules of another embodiment of the electrolytic hydrogen production process separation system of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of the separation system for hydrogen production by electrolysis.
The reference numbers indicate:
the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a processing piece-rate system of electrolysis hydrogen manufacturing is applied to among the electrolysis hydrogen manufacturing system, electrolysis hydrogen manufacturing system includes electrolytic device, electrolytic device has oxygen production room and hydrogen production room, oxygen production room has oxygen gas outlet and first inlet, hydrogen production room has hydrogen gas outlet and second inlet.
At present, the existing post-treatment unit usually directly separates hydrogen, oxygen and alkali liquor generated by electrolysis, or separates the hydrogen, oxygen and alkali liquor after simple cooling treatment, and under a long-time treatment process, the temperature of a gas-liquid mixture is high, so that the separation efficiency of the post-treatment unit is affected, even the post-treatment unit is seriously corroded, and the serious system safety problem is caused.
To solve the above problem, referring to fig. 1 to 3, in one embodiment, the processing and separating system for producing hydrogen by electrolysis comprises:
the multistage heat exchange device 10 comprises a heat exchanger and a cooler, wherein a gas inlet of the heat exchanger is communicated with the electrolysis device, a gas outlet of the heat exchanger is communicated with a gas inlet of the cooler, the heat exchanger is used for carrying out heat exchange treatment on a gas-liquid mixture output by the electrolysis device and then outputting the gas-liquid mixture, and the cooler is used for carrying out cooling treatment on the gas-liquid mixture output by the heat exchanger and then outputting the gas-liquid mixture.
It can be understood that, in the process of electrolysis, because of the work of electric current, a large amount of heat can be produced in the electrolytic device, therefore, before oxygen processing apparatus 11 and hydrogen processing apparatus 12 carry out gas-liquid separation to the gas-liquid mixture, this embodiment still is equipped with multistage heat transfer device 10 and carries out multistage heat transfer to the gas-liquid mixture, and multistage heat transfer device 10 can select cooling apparatus such as cooler, heat exchanger to constitute for use, can fully cool down the gas-liquid mixture, can reduce the corruption of gas-liquid mixture to processing apparatus to improve the separation effect to the gas-liquid mixture. The multistage heat exchange equipment can be realized by combining the cooler and the heat exchanger, the heat exchanger can utilize liquid and gas-liquid mixture after gas-liquid separation to carry out heat exchange, the coolant consumption of the cooler can be reduced, the separated liquid can be heated and then conveyed to the electrolysis device, the damage to the electrolysis device caused by too large cold-heat difference is avoided, energy conservation and environmental protection are realized, and the stability and the safety of a separation processing system for hydrogen production by electrolysis are improved.
The utility model discloses a set up multistage heat transfer device 10, realized the multistage heat transfer to gas-liquid mixture, can reduce gas-liquid mixture to processing apparatus's corruption to improve the separation effect to gas-liquid mixture. Meanwhile, the multistage heat exchange device 10 can make full use of liquid after gas-liquid separation, not only can reduce the coolant consumption of a cooler, but also can heat the separated liquid and then convey the liquid to an electrolysis device, so that the electrolysis device is prevented from being damaged due to too large cold-heat difference, energy conservation and environmental protection are realized, and the stability and the safety of a processing and separating system for producing hydrogen by electrolysis are improved.
Referring to fig. 1 to 3, in an embodiment, the electrolysis device has an oxygen outlet, a hydrogen outlet, a first liquid inlet and a second liquid inlet;
the processing and separating system for the electrolytic hydrogen production further comprises:
an air inlet of the oxygen treatment device 11 is communicated with an oxygen outlet of the multistage heat exchange device 10, an air outlet of the oxygen treatment device 11 is used for being connected to an oxygen collection device, an air outlet of the oxygen treatment device 11 is communicated with a first liquid inlet of the electrolysis device, and the oxygen treatment device 11 is used for performing gas-liquid separation on an oxygen-liquid mixture output by the multistage heat exchange device 10 and sending oxygen after the gas-liquid separation to the oxygen collection device from the air outlet;
It can be understood that the hydrogen production by electrolysis usually employs alkaline liquid to perform electrolysis, and oxygen is generated at the anode, and hydrogen is generated at the cathode, because the gas generated by electrolysis in the alkaline liquid is generated, the gas generated by electrolysis in the electrolysis cell usually carries alkaline liquid, i.e. gas-liquid mixture, so that pure oxygen and hydrogen can be collected after the gas-liquid mixture is treated in the actual production process, but the mutual connection of hydrogen-oxygen separation systems is likely to be caused under the existing process flow operation, which has serious system safety problem.
Therefore, in this embodiment, the processing and separating system for hydrogen production by electrolysis is provided with an oxygen processing device 11 and a hydrogen processing device 12 which are separated from each other, wherein the oxygen processing device 11 is communicated with the oxygen producing chamber of the electrolysis device through a closed conveying pipeline, and the hydrogen processing device 12 is communicated with the hydrogen producing chamber of the electrolysis device through a closed conveying pipeline, so that the processing and separating system has an oxygen processing channel and a hydrogen processing channel which are independent from each other, the gas-liquid mixture produced by the hydrogen producing chamber and the gas-liquid mixture produced by the oxygen producing chamber are separated from each other from the electrolysis device to avoid the phenomenon of hydrogen and oxygen cross-linking, the gas-liquid mixture produced by the oxygen producing chamber is separated in the oxygen processing device 11, and the gas-liquid mixture produced by the hydrogen producing chamber is processed in the hydrogen processing device 12, and the gas-liquid mixture is separated from each other and independent from each other to obtain pure oxygen and hydrogen respectively. So set up, separate the processing by two independent processing apparatus respectively, reduced the mutual serial possibility of oxyhydrogen, improved the stability and the security of handling the piece-rate system.
The electrolysis device is provided with two independent cavities of a positive electrode and a negative electrode, required liquid is injected into the two cavities of the electrolysis cell, the electrolysis electrode of the electrolysis cell is electrified to electrolyze the liquid, and when the electrolyzed liquid is water or alkaline liquid, oxygen can be generated in the positive electrode cavity, namely in the oxygen generation chamber, and the oxygen is sent to the oxygen treatment device 11 for separation treatment through a closed conveying pipeline. Meanwhile, hydrogen is generated in the negative electrode chamber, that is, the hydrogen is generated in the hydrogen generation chamber and is sent to the hydrogen processing device 12 through a closed conveying pipeline for separation processing. The oxygen treatment device 11 and the hydrogen treatment device 12 may be implemented by gas-liquid separation towers or other gas-liquid separation devices, and the gas-liquid separation towers can separate gas and liquid in a gas-liquid mixture by means of gravity, adsorption, washing and the like, so as to obtain pure oxygen and hydrogen, and can obtain separated liquid. In this way, a liquid circulation line may be provided between the oxygen processing device 11 and the electrolysis device and between the hydrogen processing device 12 and the electrolysis device to return the liquid after gas-liquid separation to the electrolysis device, thereby improving the utilization rate of the liquid.
The utility model discloses a set up oxygen processing apparatus 11 and hydrogen processing apparatus 12, just separate the hydrogen that produces the hydrogen room from electrolytic device and the oxygen that produces the oxygen room, separate the processing respectively independently by oxygen processing apparatus 11 and hydrogen processing apparatus 12 to acquire pure oxygen and hydrogen respectively. Moreover, the oxygen treatment device 11 and the hydrogen treatment device 12 are not communicated with each other, and the oxygen treatment device 11 and the hydrogen treatment device 12 are completely isolated, so that the possibility of mutual hydrogen and oxygen series is reduced, and the stability and the safety of a treatment and separation system are improved.
Referring to fig. 1-3, in one embodiment, the multi-stage heat exchange device 10 includes:
an air inlet of the oxygen side heat exchanger 71 is communicated with an oxygen outlet of the electrolysis device, a liquid inlet of the oxygen side heat exchanger 71 is communicated with a liquid outlet of the oxygen treatment device, a liquid outlet of the oxygen side heat exchanger 71 is communicated with a first liquid inlet of the electrolysis device, and the oxygen side heat exchanger 71 is used for enabling an oxygen liquid mixture entering from the air inlet to perform heat exchange with liquid entering from the liquid inlet;
an air inlet of the oxygen side cooler 51 is communicated with an air outlet of the oxygen side heat exchanger 71, an air outlet of the oxygen side cooler 51 is communicated with an air inlet of the oxygen treatment device, an air inlet of the oxygen side cooler 51 is used for connecting a coolant supplementing device, an air outlet of the oxygen side cooler 51 is used for connecting a coolant collecting device, and the oxygen side cooler 51 is used for carrying out cooling treatment on the oxygen gas-liquid mixture flowing in from the air inlet and then conveying the oxygen gas-liquid mixture to the oxygen treatment device;
a hydrogen-side heat exchanger 72, wherein an air inlet of the hydrogen-side heat exchanger 72 is communicated with a hydrogen gas outlet of the electrolysis device, a liquid inlet of the hydrogen-side heat exchanger 72 is communicated with a liquid outlet of the hydrogen treatment device, a liquid outlet of the hydrogen-side heat exchanger 72 is communicated with a first liquid inlet of the electrolysis device, and the hydrogen-side heat exchanger 72 is used for exchanging heat between a hydrogen gas liquid mixture entering from the air inlet and liquid entering from the liquid inlet;
the gas inlet of the hydrogen side cooler 52 is communicated with the gas outlet of the hydrogen side heat exchanger 72, the gas outlet of the hydrogen side cooler 52 is communicated with the gas inlet of the hydrogen processing device, the liquid inlet of the hydrogen side cooler 52 is used for connecting a coolant supplementing device, the liquid outlet of the hydrogen side cooler 52 is used for connecting a coolant collecting device, and the hydrogen side cooler 52 is used for cooling the hydrogen liquid mixture flowing in from the gas inlet and then conveying the cooled hydrogen liquid mixture to the hydrogen processing device.
It can be understood that, during the electrolysis process of the electrolysis device, due to the work of the current, the electrolysis device generates a large amount of heat during the electrolysis process, and the gas-liquid mixture generated by the oxygen generating chamber and the hydrogen generating chamber also carries a large amount of heat, so in an embodiment, the processing and separating system is further provided with an oxygen side cooler 51 and a hydrogen side cooler 52 for cooling the gas-liquid mixture sent from the oxygen generating chamber and the hydrogen generating chamber, and then sending the gas-liquid mixture to the oxygen processing device 11 and the hydrogen processing device 12. Oxygen side cooler 51 and hydrogen side cooler 52 can choose for use the heat exchanger to realize, refer to fig. 3, fig. 3 is the utility model discloses the structure schematic diagram of the embodiment of the processing and separating system of electrolytic hydrogen production, oxygen side cooler 51 and hydrogen side cooler 52 all choose for use the heat exchanger to realize, all have two passageways in oxygen side cooler 51 and the hydrogen side cooler 52, a passageway is used for carrying gas-liquid mixture, a passageway is used for carrying the coolant, thereby make the partial heat transfer of hot-fluid give the cold fluid, also the temperature in the coolant absorption gas-liquid mixture, and then reach the effect of cooling to gas-liquid mixture, avoided leading to the fact the damage because of gas-liquid mixture high temperature to oxygen processing apparatus 11 and hydrogen processing apparatus 12, the stability and the security of the processing and separating system of electrolytic hydrogen production have been improved.
Further, still be equipped with the heat exchanger on the pipeline between cooler and electrolytic device, refer to fig. 3, fig. 3 is the utility model discloses the structure schematic diagram of the embodiment of the processing and separating system of electrolysis hydrogen manufacturing, all have two passageways in oxygen side heat exchanger 71 and the hydrogen side heat exchanger 72, a passageway is used for carrying the gas-liquid mixture, another passageway is used for carrying the liquid after the gas-liquid separation, it can be understood that, the temperature of liquid after the separation processing is less than the temperature of gas-liquid mixture by a wide margin, consequently, the heat exchanger can make the partial heat transfer of hot-fluid for the cold fluid, the liquid that also makes after the gas-liquid separation absorbs the temperature of gas-liquid mixture. The utility model discloses a set up heat exchanger and cooler, the second grade heat transfer has been realized, can fully cool down to gas-liquid mixture, can reduce the corruption of gas-liquid mixture to processing apparatus, and improve the separation effect to gas-liquid mixture, not only can reduce the coolant quantity of cooler, can also heat the back to the liquid after the separation and send to electrolytic device again, avoid the too big damage that causes electrolytic device of cold and hot disparity, energy-concerving and environment-protective has been realized, the stability and the security of the processing piece-rate system of electrolytic hydrogen production have been improved.
Optionally, the multistage heat exchange device 10 further includes:
an oxygen side cooling pipeline, a liquid inlet of which is communicated with a liquid inlet of the oxygen side cooler 51, and a liquid outlet of which is communicated with a liquid outlet of the oxygen side cooler 51;
an oxygen side temperature control valve group 61, the oxygen side temperature control valve group 61 being provided on the oxygen side cooling line, the oxygen side temperature control valve group 61 being configured to control on/off of the oxygen side cooling line;
a liquid inlet of the hydrogen side cooling pipeline is communicated with a liquid inlet of the hydrogen side cooler 52, and a liquid outlet of the hydrogen side cooling pipeline is communicated with a liquid outlet of the hydrogen side cooler 52;
a hydrogen side temperature control valve group 62, wherein the hydrogen side temperature control valve group 62 is arranged on the hydrogen side cooling pipeline, and the hydrogen side temperature control valve group 62 is used for controlling the on/off of the hydrogen side cooling pipeline.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the treatment and separation system for hydrogen production by electrolysis according to the present invention, and a cooling bypass of an oxygen side cooler 51 and a hydrogen side cooler 52 is further provided in the treatment and separation system for hydrogen production by electrolysis for controlling the flow of coolant flowing through the oxygen side cooler 51 and the hydrogen side cooler 52. It will be understood that when the oxygen side temperature control valve group 61 controls the oxygen side cooling line to be turned off, the coolant can only pass through the oxygen side cooler 51, and when the oxygen side temperature control valve group 61 controls the oxygen side cooling line to be turned on, the coolant can pass through the oxygen side cooler 51 and the oxygen side cooling line, and since the flow rate of the coolant supplied by the coolant supply device is constant, the flow rate of the coolant flowing through the oxygen side cooler 51 is correspondingly reduced. Therefore, by controlling the on/off of the hydrogen-side cooling line, the coolant flow rate through the oxygen-side cooler 51 can be controlled, thereby changing the temperature-lowering effect of the oxygen-side cooler 51. Likewise, hydrogen side thermo-valve set 62 can control the coolant flow through hydrogen side cooler 52.
Optionally, the oxygen side temperature control valve group 61 is further configured to detect an oxygen side line temperature between the oxygen side cooler 51 and the electrolysis device, and to control on/off of the oxygen side cooling line according to the oxygen side line temperature to control the coolant flow rate through the oxygen side cooler 51;
the hydrogen-side temperature control valve group 62 is further configured to detect a hydrogen-side line temperature between the hydrogen-side cooler 52 and the electrolyzer, and control on/off of the hydrogen-side cooling line according to the hydrogen-side line temperature, so as to control a coolant flow rate flowing through the hydrogen-side cooler 52.
In one embodiment, the detection end of the oxygen side temperature control valve set 61, i.e. the detection signal line, is disposed on the oxygen side pipeline between the oxygen side cooler 51 and the oxygen generating chamber, so that the oxygen side temperature control valve set 61 can detect the temperature at the outlet of the oxygen generating chamber and adjust the coolant flow passing through the oxygen side cooler 51 according to the temperature at the outlet of the oxygen generating chamber, thereby changing the cooling effect of the oxygen side cooler 51. For example, when it is detected that the temperature at the outlet of the oxygen generating chamber is high, the control line is shut off so that the flow rate of the coolant flowing through the oxygen side cooler 51 is increased to improve the temperature decreasing effect of the oxygen side cooler 51. On the contrary, when the temperature at the outlet of the oxygen generating chamber is low, the conduction of the pipeline can be controlled, so that the flow of the coolant flowing through the oxygen side cooler 51 is reduced, the cooling effect of the oxygen side cooler 51 is reduced, and the consumption of the coolant is saved. Similarly, the hydrogen side temperature control valve group 62 can detect the temperature at the outlet of the hydrogen production chamber and control the coolant flow through the hydrogen side cooler 52 according to the temperature at the outlet of the hydrogen production chamber. The utility model discloses a set up oxygen side temperature control valve group 61 and hydrogen side temperature control valve group 62 for handle the cold volume that the piece-rate system can produce according to the electrolysis trough heat quantity control coolant, can match as required, further reduction the energy consumption, reduced the temperature that gets into oxygen processing apparatus 11 and hydrogen processing apparatus 12 simultaneously.
Referring to fig. 1-3, in one embodiment, the process separation system for producing hydrogen by electrolysis further comprises:
the oxyhydrogen control valve group 20 is provided with an oxygen side pressure control end and a hydrogen side pressure control end, the oxygen side pressure control end of the oxyhydrogen control valve group 20 is arranged between the gas outlet of the oxygen treatment device 11 and the oxygen collection device, and the hydrogen side pressure control end of the oxyhydrogen control valve group 20 is arranged between the gas outlet of the hydrogen treatment device 12 and the hydrogen collection device;
the oxyhydrogen control valve group 20 is used for controlling the connection/disconnection of a pipeline between the oxygen processing device 11 and the oxygen collecting device, or controlling the connection/disconnection of a pipeline between the hydrogen processing device 12 and the hydrogen collecting device, so that the difference between the pressure in the oxygen processing device 11 and the pressure in the hydrogen processing device 12 is smaller than a preset pressure difference.
It can be understood that the pressure inside the oxygen processing device 11 and the hydrogen processing device 12 has a certain influence on the separation capability, and therefore, in the present embodiment, an oxyhydrogen control valve group 20 is further provided for controlling the pressure inside the oxygen processing device 11 and the hydrogen processing device 12. Oxyhydrogen valves 20 can select for use two voltage-controlled valves to realize, refer to fig. 3, fig. 3 is the utility model discloses the structural schematic of embodiment is unified to the processing separation system of electrolysis hydrogen manufacturing, a voltage-controlled valve sets up on the pipeline between oxygen processing apparatus 11 and the oxygen collection device, and another voltage-controlled valve sets up on the pipeline between hydrogen processing apparatus 12 and the hydrogen collection device, is used for controlling the pipeline that corresponds to switch on/off respectively to control the pressure size in oxygen processing apparatus 11 and the hydrogen processing apparatus 12.
Further, because the ratio of the hydrogen to the oxygen generated by the electrolysis is fixed, the difference between the pressure in the oxygen processing device 11 and the pressure in the hydrogen processing device 12 can be within a preset range by controlling the hydrogen-oxygen control valve set 20, so as to avoid the phenomena of backflow, streaming and the like caused by too large or too small pressure difference between the two processing devices. Two pressure-controlled valve groups in the hydrogen-oxygen control valve group 20 can be connected by a signal line, so that the pressure-block valve group on the oxygen side can acquire the pressure in the hydrogen treatment device 12, and the pipeline between the oxygen treatment device 11 and the oxygen collection device is controlled to be switched on/off according to the pressure in the hydrogen treatment device 12, so as to control the pressure in the oxygen treatment device 11, and further the difference between the pressure in the oxygen treatment device 11 and the pressure in the hydrogen treatment device 12 is smaller than a preset pressure difference. Similarly, the pressure block valve set on the hydrogen side can also make the difference between the pressure in the oxygen processing device 11 and the pressure in the hydrogen processing device 12 smaller than the preset pressure difference, so as to maintain the stability of the whole processing and separating system.
Referring to fig. 1-3, in one embodiment, the process separation system for producing hydrogen by electrolysis further comprises:
an oxygen side liquid pump 31, a liquid inlet of the oxygen side liquid pump 31 is communicated with a liquid outlet of the oxygen treatment device 11, a liquid outlet of the oxygen side liquid pump 31 is communicated with a first liquid inlet of the electrolysis device, and the oxygen side liquid pump 31 is used for conveying liquid obtained after gas-liquid separation is carried out on the oxygen treatment device 11 to the oxygen generation chamber.
And/or the processing and separating system for the electrolytic hydrogen production further comprises:
a liquid pump 32 on the hydrogen side, wherein a liquid inlet of the liquid pump 32 on the hydrogen side is communicated with a liquid outlet of the hydrogen processing device 12, a liquid outlet of the liquid pump 32 on the hydrogen side is communicated with a second liquid inlet of the electrolysis device, and the liquid pump 32 on the hydrogen side is used for conveying the liquid obtained after the gas-liquid separation of the hydrogen processing device 12 to the hydrogen generating chamber.
It can be understood that the oxygen processing device 11 and the hydrogen processing device 12 can separate the gas and the liquid in the gas-liquid mixture, so as to obtain pure oxygen and hydrogen, and obtain the separated liquid. Therefore, in this embodiment, an oxygen-side liquid pump 31 and a hydrogen-side liquid pump 32 are respectively provided between the oxygen gas treatment device 11 and the hydrogen gas treatment device 12 and the electrolysis device, so as to feed the liquid after gas-liquid separation back to the electrolysis device, thereby improving the utilization rate of the liquid. Referring to fig. 3 and fig. 3 are schematic structural diagrams of an embodiment of the processing and separating system for hydrogen production by electrolysis of the present invention, an oxygen-side liquid pump 31 is disposed between the oxygen treatment device 11 and the electrolytic cell for returning the liquid after gas-liquid separation of the oxygen treatment device 11 to the electrolytic cell for secondary utilization, and a hydrogen-side liquid pump 32 is used for returning the liquid after gas-liquid separation of the hydrogen treatment device 12 to the electrolytic cell for secondary utilization. With the arrangement, the electrolytic cell forms an independent cycle with the oxygen treatment device 11 and the oxygen side liquid pump 31, and forms another independent cycle with the hydrogen treatment device 12 and the hydrogen side liquid pump 32, so that the utilization rate of electrolytic liquid is improved while mutual interference of hydrogen and oxygen is prevented, energy conservation and environmental protection are realized, and the stability and the safety of a treatment separation system for producing hydrogen by electrolysis are improved.
Referring to fig. 1-3, in one embodiment, the process separation system for producing hydrogen by electrolysis further comprises:
an oxygen-side flow control valve group 41, wherein the oxygen-side flow control valve group 41 is disposed between the liquid outlet of the oxygen treatment device 11 and the first liquid inlet of the electrolysis device, and the oxygen-side flow control valve group 41 is configured to control on/off of a pipeline between the liquid outlet of the oxygen treatment device 11 and the first liquid inlet of the electrolysis device, and when the pipeline is on, send liquid obtained by gas-liquid separation of the oxygen treatment device 11 to the electrolysis device;
and/or the processing and separating system for the electrolytic hydrogen production further comprises:
a hydrogen side flow control valve group 42, the hydrogen side flow control valve group 42 is arranged between the liquid outlet of the hydrogen processing device 12 and the second liquid inlet of the electrolysis device, the hydrogen side flow control valve group 42 is used for controlling the connection/disconnection of a pipeline between the liquid outlet of the hydrogen processing device 12 and the second liquid inlet of the electrolysis device, and when the connection is performed, the liquid after the gas-liquid separation of the hydrogen processing device 12 is delivered to the electrolysis device.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the processing and separating system for hydrogen production by electrolysis according to the present invention, in this embodiment, an oxygen side flow control valve set 41 and a hydrogen side flow control valve set 42 are further disposed between the oxygen processing device 11 and the hydrogen processing device 12 and the electrolytic cell, so as to control the pipeline connection/disconnection between the oxygen processing device 11 and the hydrogen processing device 12 and the electrolytic cell. The utility model discloses a set up oxygen side flow control valves 41 and hydrogen side flow control valves 42, can deliver to the electrolysis trough with the liquid after the gas-liquid separation and carry out the reutilization on the one hand, improved the utilization ratio of electrolytic liquid, realized energy-concerving and environment-protective. On the other hand, the flow control valve is arranged on the pipeline, so that the on/off of the pipeline between the oxygen treatment device 11 and the electrolysis device and the pipeline between the hydrogen treatment device 12 and the electrolysis device can be flexibly controlled, the gas-liquid mixture can not directly return to the electrolysis device from the oxygen treatment device 11 and the hydrogen treatment device 12, and the separated liquid is sent back to the electrolysis device after being sufficiently separated.
Optionally, when the processing and separating system for electrolytic hydrogen production includes the oxygen side flow control valve group 41, a detection end of the oxygen side flow control valve group 41 is connected to the oxygen treatment device 11, and the oxygen side flow control valve group 41 is further configured to detect a height of a liquid level in the oxygen treatment device 11, and control a pipeline between a liquid outlet of the oxygen treatment device 11 and a first liquid inlet of the electrolysis device to be turned on/off according to the height of the liquid level in the oxygen treatment device 11, so as to control the height of the liquid level in the oxygen treatment device 11 to be lower than a first preset height;
when the processing and separating system for electrolytic hydrogen production comprises the hydrogen side flow control valve group 42, the detection end of the hydrogen side flow control valve group 42 is connected with the hydrogen processing device 12, the hydrogen side flow control valve group 42 is further used for detecting the height of the liquid level in the hydrogen processing device 12, and controlling the connection/disconnection of a pipeline between the liquid outlet of the hydrogen processing device 12 and the first liquid inlet of the electrolysis device according to the height of the liquid level in the hydrogen processing device 12 so as to control the height of the liquid level in the hydrogen processing device 12 to be lower than a second preset height.
In an embodiment, the detection end of the oxygen side flow control valve group 41, that is, the detection signal line, is further connected to the oxygen treatment device 11, so that the oxygen side flow control valve group 41 can detect the liquid level inside the oxygen treatment device 11, and when the liquid level inside the oxygen treatment device 11 is higher than a first preset height, the control pipeline is conducted, so that the liquid separated and processed by the oxygen treatment device 11 is sent back to the electrolysis device for secondary use, and the liquid level inside the oxygen treatment device 11 is always lower than the first preset height. Likewise, the hydrogen side flow control valve set 42 can make the liquid level in the hydrogen processing device 12 always lower than the second preset level. The utility model discloses a set up oxygen side flow control valves 41 and hydrogen side flow control valves 42 for the liquid level in oxygen processing apparatus 11 and the hydrogen processing apparatus 12 can keep in certain within range, makes gas-liquid separation can fully go on, has improved the utilization ratio of electrolytic liquid, has realized energy-concerving and environment-protective, has improved the stability and the security of the processing piece-rate system of electrolytic hydrogen manufacturing.
Referring to fig. 1 to 3, in an embodiment, the oxygen processing device 11 and the hydrogen processing device 12 both have a fluid infusion port;
the processing and separating system for the electrolytic hydrogen production further comprises:
the pure water tank 80 is connected with a pure water supplementing device through a liquid inlet of the pure water tank 80, and the pure water tank 80 is used for storing pure water;
a liquid inlet of the pure water pump 90 is connected with a liquid outlet of the pure water tank 80, a liquid outlet of the pure water pump 90 is respectively communicated with a liquid supplementing port of the oxygen treatment device 11 and a liquid supplementing port of the hydrogen treatment device 12, and the pure water pump 90 is used for delivering pure water stored in the pure water tank 80 to the oxygen treatment device 11 and the hydrogen treatment device 12.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the treatment and separation system for electrolytic hydrogen production of the present invention, wherein the oxygen treatment device 11 and the hydrogen treatment device 12 select the gas-liquid separation tower to separate the gas-liquid mixture, specifically, the gas-liquid mixture enters the lower part of the gas-liquid separation tower to separate the gas and liquid, the separated gas rises in the tower, the gas rises to the upper part of the tower, the spray nozzle is adopted to spray pure water to further spray and evolve the gas to spray and wash the carried trace liquid, and the gas continues to rise to the gas outlet at the top of the tower. Therefore, in an embodiment, the processing and separating system is further provided with a pure water tank 80 and a pure water pump 90 for supplying pure water to the oxygen processing device 11 and the hydrogen processing device 12, so that the oxygen processing device 11 and the hydrogen processing device 12 can stably perform gas-liquid separation on the gas-liquid mixture, and the stability and the safety of the processing and separating system for producing hydrogen by electrolysis are improved. In addition, as shown in fig. 3, a waste liquid collecting device can be arranged at the first liquid inlet and the second liquid inlet of the electrolysis device, and is used for collecting waste liquid after electrolysis or after gas-liquid separation, so that energy conservation and environmental protection can be realized while the waste liquid is prevented from interfering decomposition.
The utility model also provides an electrolytic hydrogen production system, which comprises an electrolytic device and the treatment and separation system for producing hydrogen by electrolyzing water; wherein the content of the first and second substances,
the electrolysis device is provided with an oxygen generating chamber and a hydrogen generating chamber, the oxygen generating chamber is provided with an oxygen gas outlet and a first liquid inlet, the hydrogen generating chamber is provided with a hydrogen gas outlet and a second liquid inlet, and the electrolysis device is used for electrolyzing liquid in the oxygen generating chamber and the hydrogen generating chamber so as to generate oxygen in the oxygen generating chamber and generate hydrogen in the hydrogen generating chamber.
In this embodiment, the specific structure of the treatment and separation system for hydrogen production from electrolyzed water refers to the above embodiments, and since the photovoltaic inverter adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (11)
1. A processing and separating system for electrolytic hydrogen production is applied to an electrolytic hydrogen production system, the electrolytic hydrogen production system comprises an electrolytic device, and is characterized by comprising:
the multistage heat exchange device comprises a heat exchanger and a cooler, wherein a gas inlet of the heat exchanger is communicated with the electrolysis device, a gas outlet of the heat exchanger is communicated with a gas inlet of the cooler, the heat exchanger is used for carrying out heat exchange treatment on a gas-liquid mixture output by the electrolysis device and then outputting the gas-liquid mixture, and the cooler is used for cooling treatment on the gas-liquid mixture output by the heat exchanger and then outputting the gas-liquid mixture.
2. The processing and separation system for electrolytic hydrogen production according to claim 1, wherein the electrolysis device has an oxygen gas outlet, a hydrogen gas outlet, a first liquid inlet, and a second liquid inlet;
the processing and separating system for the electrolytic hydrogen production further comprises:
the gas inlet of the oxygen treatment device is communicated with the oxygen gas outlet of the multistage heat exchange device, the gas outlet of the oxygen treatment device is used for being connected to an oxygen collection device, the liquid outlet of the oxygen treatment device is communicated with the first liquid inlet of the electrolysis device, and the oxygen treatment device is used for carrying out gas-liquid separation on the oxygen gas-liquid mixture output by the multistage heat exchange device and sending the oxygen gas after the gas-liquid separation to the oxygen collection device from the gas outlet;
the hydrogen treatment device, hydrogen treatment device's air inlet with multistage heat transfer device's hydrogen gas outlet intercommunication, hydrogen treatment device's gas outlet is used for inserting hydrogen collection device, hydrogen treatment device's liquid outlet with electrolysis unit's second inlet intercommunication, hydrogen treatment device is used for right the hydrogen liquid mixture of multistage heat transfer device output carries out gas-liquid separation to hydrogen collection device is sent to from the gas outlet with the hydrogen after the gas-liquid separation.
3. The process separation system for electrolytic hydrogen production according to claim 2, wherein the multi-stage heat exchange means comprises:
the gas inlet of the oxygen side heat exchanger is communicated with the oxygen gas outlet of the electrolysis device, the liquid inlet of the oxygen side heat exchanger is communicated with the liquid outlet of the oxygen treatment device, the liquid outlet of the oxygen side heat exchanger is communicated with the first liquid inlet of the electrolysis device, and the oxygen side heat exchanger is used for exchanging heat between an oxygen gas-liquid mixture entering from the gas inlet and liquid entering from the liquid inlet;
an air inlet of the oxygen side cooler is communicated with an air outlet of the oxygen side heat exchanger, an air outlet of the oxygen side cooler is communicated with an air inlet of the oxygen treatment device, an air inlet of the oxygen side cooler is used for being connected with a coolant supplementing device, an air outlet of the oxygen side cooler is used for being connected with a coolant collecting device, and the oxygen side cooler is used for conveying an oxygen liquid mixture flowing in from the air inlet to the oxygen treatment device after cooling treatment;
the gas inlet of the hydrogen side heat exchanger is communicated with the hydrogen gas outlet of the electrolysis device, the liquid inlet of the hydrogen side heat exchanger is communicated with the liquid outlet of the hydrogen treatment device, the liquid outlet of the hydrogen side heat exchanger is communicated with the first liquid inlet of the electrolysis device, and the hydrogen side heat exchanger is used for exchanging heat between a hydrogen gas liquid mixture entering from the gas inlet and liquid entering from the liquid inlet;
the hydrogen side cooler, the air inlet of hydrogen side cooler with the gas outlet intercommunication of hydrogen side heat exchanger, the gas outlet of hydrogen side cooler with hydrogen processing apparatus's air inlet intercommunication, the inlet of hydrogen side cooler is used for inserting coolant supplementary device, the liquid outlet of hydrogen side cooler is used for inserting coolant collection device, the hydrogen side cooler is used for carrying on cooling treatment to the hydrogen liquid mixture that flows into from the air inlet after, carry to hydrogen processing apparatus.
4. The process separation system for electrolytic hydrogen production according to claim 3, wherein the multi-stage heat exchange apparatus further comprises:
a liquid inlet of the oxygen side cooling pipeline is communicated with a liquid inlet of the oxygen side cooler, and a liquid outlet of the oxygen side cooling pipeline is communicated with a liquid outlet of the oxygen side cooler;
the oxygen side temperature control valve group is arranged on the oxygen side cooling pipeline and used for controlling the on/off of the oxygen side cooling pipeline;
a liquid inlet of the hydrogen side cooling pipeline is communicated with a liquid inlet of the hydrogen side cooler, and a liquid outlet of the hydrogen side cooling pipeline is communicated with a liquid outlet of the hydrogen side cooler;
and the hydrogen side temperature control valve group is arranged on the hydrogen side cooling pipeline and is used for controlling the on/off of the hydrogen side cooling pipeline.
5. The processing and separating system for electrolytic hydrogen production according to claim 4, wherein the oxygen side temperature control valve group is further configured to detect an oxygen side line temperature between the oxygen side cooler and the electrolysis device, and to control on/off of the oxygen side cooling line according to the oxygen side line temperature so as to control a coolant flow rate through the oxygen side cooler;
the hydrogen side temperature control valve group is also used for detecting the temperature of a hydrogen side pipeline between the hydrogen side cooler and the electrolysis device, and controlling the on/off of the hydrogen side cooling pipeline according to the temperature of the hydrogen side pipeline so as to control the flow of coolant flowing through the hydrogen side cooler.
6. The process separation system for electrolytic hydrogen production according to claim 2, further comprising:
the hydrogen-oxygen control valve group is provided with an oxygen side pressure control end and a hydrogen side pressure control end, the oxygen side pressure control end of the hydrogen-oxygen control valve group is arranged between the gas outlet of the oxygen treatment device and the oxygen collection device, and the hydrogen side pressure control end of the hydrogen-oxygen control valve group is arranged between the gas outlet of the hydrogen treatment device and the hydrogen collection device;
the hydrogen and oxygen control valve group is used for controlling the connection/disconnection of a pipeline between the oxygen treatment device and the oxygen collection device or controlling the connection/disconnection of a pipeline between the hydrogen treatment device and the hydrogen collection device, so that the difference value between the pressure in the oxygen treatment device and the pressure in the hydrogen treatment device is smaller than a preset pressure difference value.
7. The process separation system for electrolytic hydrogen production according to claim 2, further comprising:
the liquid inlet of the oxygen side liquid pump is communicated with the liquid outlet of the oxygen treatment device, the liquid outlet of the oxygen side liquid pump is communicated with the first liquid inlet of the electrolysis device, and the oxygen side liquid pump is used for conveying liquid obtained after gas-liquid separation is carried out on the oxygen treatment device to the electrolysis device;
and/or the processing and separating system for the electrolytic hydrogen production further comprises:
the liquid pump of hydrogen side, the inlet of hydrogen side liquid pump with hydrogen processing apparatus's liquid outlet intercommunication, the liquid outlet of hydrogen side liquid pump with electrolytic device's second inlet intercommunication, hydrogen side liquid pump be used for with liquid after hydrogen processing apparatus carries out gas-liquid separation is sent to electrolytic device.
8. The process separation system for electrolytic hydrogen production according to claim 2, further comprising:
the oxygen side flow control valve group is arranged between the liquid outlet of the oxygen treatment device and the first liquid inlet of the electrolysis device, and is used for controlling the connection/disconnection of a pipeline between the liquid outlet of the oxygen treatment device and the first liquid inlet of the electrolysis device and sending liquid obtained after gas-liquid separation of the oxygen treatment device to the electrolysis device when the pipeline is connected;
and/or the processing and separating system for the electrolytic hydrogen production further comprises:
and the hydrogen side flow control valve group is arranged between the liquid outlet of the hydrogen treatment device and the second liquid inlet of the electrolysis device, and is used for controlling the connection/disconnection of a pipeline between the liquid outlet of the hydrogen treatment device and the second liquid inlet of the electrolysis device and sending the liquid after the gas-liquid separation of the hydrogen treatment device to the electrolysis device when the pipeline is connected.
9. The processing and separating system for electrolytic hydrogen production according to claim 8, wherein when the processing and separating system for electrolytic hydrogen production includes the oxygen side flow control valve set, a detection end of the oxygen side flow control valve set is connected to the oxygen treatment device, the oxygen side flow control valve set is further configured to detect a height of a liquid level in the oxygen treatment device, and control a pipeline between a liquid outlet of the oxygen treatment device and the first liquid inlet of the electrolytic device to be turned on/off according to the height of the liquid level in the oxygen treatment device, so as to control the height of the liquid level in the oxygen treatment device to be lower than a first preset height;
when the processing and separating system for electrolytic hydrogen production comprises the hydrogen side flow control valve group, the detection end of the hydrogen side flow control valve group is connected with the hydrogen processing device, the hydrogen side flow control valve group is also used for detecting the height of the liquid level in the hydrogen processing device, and controlling the connection/disconnection of a pipeline between the liquid outlet of the hydrogen processing device and the first liquid inlet of the electrolysis device according to the height of the liquid level in the hydrogen processing device so as to control the height of the liquid level in the hydrogen processing device to be lower than a second preset height.
10. The process separation system for electrolytic hydrogen production according to any one of claims 2 to 9, wherein the oxygen gas treatment device and the hydrogen gas treatment device each have a fluid replenishment port;
the processing and separating system for the electrolytic hydrogen production further comprises:
the liquid inlet of the pure water tank is used for being connected with a pure water supplementing device, and the pure water tank is used for storing pure water;
and a liquid inlet of the pure water pump is connected with a liquid outlet of the pure water tank, a liquid outlet of the pure water pump is respectively communicated with a liquid supplementing port of the oxygen treatment device and a liquid supplementing port of the hydrogen treatment device, and the pure water pump is used for delivering pure water stored in the pure water tank to the oxygen treatment device and the hydrogen treatment device.
11. An electrolytic hydrogen production system, characterized by comprising an electrolysis device and the processing and separating system for electrolytic hydrogen production according to any one of claims 1 to 10; wherein, the first and the second end of the pipe are connected with each other,
the electrolysis device is provided with an oxygen generating chamber and a hydrogen generating chamber, the oxygen generating chamber is provided with an oxygen gas outlet and a first liquid inlet, the hydrogen generating chamber is provided with a hydrogen gas outlet and a second liquid inlet, and the electrolysis device is used for electrolyzing liquid in the oxygen generating chamber and the hydrogen generating chamber so as to generate oxygen in the oxygen generating chamber and generate hydrogen in the hydrogen generating chamber.
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