CN112626560B - Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method - Google Patents
Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method Download PDFInfo
- Publication number
- CN112626560B CN112626560B CN202011471567.9A CN202011471567A CN112626560B CN 112626560 B CN112626560 B CN 112626560B CN 202011471567 A CN202011471567 A CN 202011471567A CN 112626560 B CN112626560 B CN 112626560B
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- oxygen
- purity
- conveying pipeline
- gas recovery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention discloses a gas recovery device of electrolytic cell equipment, which comprises an electrolytic cell, wherein a hydrogen conveying pipeline and an oxygen conveying pipeline are respectively arranged on two sides of the electrolytic cell; the hydrogen conveying pipeline is communicated with a first input pipe capable of providing high-purity hydrogen; still be equipped with the oxygen analysis appearance in the hydrogen of arranging between first input tube and electrolysis trough on the hydrogen conveying line, the oxygen analysis appearance is arranged in the hydrogen and is arranged in the hydrogen conveying line hydrogen purity to with testing result feedback to controller, the controller can be when hydrogen purity is less than the default control first input tube and carry high-purity hydrogen to the hydrogen conveying line. The gas recovery device utilizes the hydrogen oxygen analyzer to detect the purity of hydrogen in the hydrogen conveying pipeline, and the controller controls the first input pipe to convey high-purity hydrogen to the hydrogen conveying pipeline when the hydrogen purity is lower than a preset value, so that qualified hydrogen products are generated by the hydrogen post-treatment and purification system. The invention also provides an electrolytic cell device and an electrolytic gas recovery method.
Description
Technical Field
The invention relates to the technical field of mechanical industry, in particular to a gas recovery device of electrolytic cell equipment, the electrolytic cell equipment and an electrolytic gas recovery method.
Background
The electrolyzer equipment comprises an electrolyzer, wherein an anode chamber and a cathode chamber of the electrolyzer are separated by a diaphragm, and when direct current passes through the electrolyzer, the anode and the cathode of the electrolyzer respectively generate oxidation and reduction reactions with the interface of a solution to respectively generate oxygen and hydrogen.
The electrolytic cell equipment inevitably produces unqualified low-purity hydrogen under the condition of small load, and the unqualified low-purity hydrogen reaches a hydrogen post-treatment and purification system after being conveyed to form unqualified hydrogen products.
Therefore, the problem to be solved by the skilled person is how to solve the problem of unqualified hydrogen production by the hydrogen post-treatment and purification system caused by unqualified low-purity hydrogen produced by the electrolysis bath under the condition of small load.
Disclosure of Invention
In view of the above, the present invention provides a gas recycling device for an electrolyzer apparatus, which utilizes a hydrogen medium oxygen analyzer to detect the purity of hydrogen in a hydrogen conveying pipeline, and controls a first input pipe to convey high-purity hydrogen to the hydrogen conveying pipeline by a controller when the hydrogen purity is lower than a preset value, so as to improve the purity of unqualified low-purity hydrogen generated on the hydrogen side of the electrolyzer, and ensure that a hydrogen post-processing and purifying system connected to the tail end of the hydrogen conveying pipeline generates qualified hydrogen products. The invention also provides electrolytic cell equipment applying the gas recovery device and an electrolytic gas recovery method for the gas recovery device.
In order to achieve the purpose, the invention provides the following technical scheme:
a gas recovery device of an electrolytic cell device comprises an electrolytic cell, wherein a hydrogen conveying pipeline and an oxygen conveying pipeline are respectively arranged on two sides of the electrolytic cell; the hydrogen conveying pipeline is communicated with a first input pipe capable of providing high-purity hydrogen; the hydrogen conveying pipeline is also provided with a hydrogen and oxygen analyzer arranged between the first input pipe and the electrolytic cell, the hydrogen and oxygen analyzer is used for detecting the purity of hydrogen in the hydrogen conveying pipeline and feeding back a detection result to the controller, and the controller can control the first input pipe to convey high-purity hydrogen to the hydrogen conveying pipeline when the hydrogen purity is lower than a preset value.
Preferably, in the gas recovery apparatus, the hydrogen transportation pipeline is provided with a first hydrogen flowmeter between the first input pipe and the electrolytic cell, and the first input pipe is provided with a second hydrogen flowmeter; the first hydrogen flow meter and the second hydrogen flow meter are respectively connected with the controller;
the controller controls the regulating valve on the first input pipe according to the hydrogen purity signal fed back by the hydrogen and oxygen analyzer, the flow signal fed back by the first hydrogen flow meter and the flow signal fed back by the second hydrogen flow meter.
Preferably, in the above gas recovery apparatus, a pressure reducing valve and a back pressure valve are provided on the hydrogen transport line, the pressure reducing valve is located between the electrolytic cell and the inlet end of the first hydrogen flowmeter, and the back pressure valve is located between the outlet end of the first hydrogen flowmeter and the first input pipe.
Preferably, in the above gas recovery apparatus, a check valve is provided in the hydrogen gas transport line, and the check valve is located between the electrolytic cell and the first input pipe.
Preferably, in the gas recovery device, the oxygen delivery pipe is communicated with a second input pipe capable of providing compressed air, the oxygen delivery pipe is further provided with an oxygen hydrogen analyzer arranged between the second input pipe and the electrolytic cell, the oxygen hydrogen analyzer is used for detecting the oxygen purity in the oxygen delivery pipe and feeding back a detection result to the controller, and the controller is capable of controlling the second input pipe to deliver the compressed air to the oxygen delivery pipe when the oxygen purity is lower than a preset value.
Preferably, in the gas recovery device, the oxygen delivery pipe is provided with an oxygen flow meter between the second input pipe and the electrolytic cell, and the second input pipe is provided with a compressed air flow meter; the oxygen flow meter and the compressed air flow meter are respectively connected with the controller;
and the controller controls the regulating valve on the second input pipe according to an oxygen purity signal fed back by the hydrogen analyzer in oxygen, a flow signal fed back by the oxygen flow meter and a flow signal fed back by the compressed air flow meter.
Preferably, in the above gas recovery device, a pressure reducing valve is disposed on the oxygen delivery line, and the pressure reducing valve is located between the electrolytic cell and an inlet end of the oxygen flow meter.
Preferably, in the gas recovery apparatus, a back pressure valve is provided in the oxygen transfer line, and the back pressure valve is located between the second input pipe and an outlet end of the oxygen flow meter.
Preferably, in the above gas recovery apparatus, a check valve is provided in the oxygen delivery line, and the check valve is located between the electrolytic cell and the second input pipe.
An electrolysis cell apparatus comprising a gas recovery device according to any one of the preceding claims.
An electrolytic gas recovery method used in the gas recovery device according to any one of the above aspects, comprising:
the hydrogen medium oxygen analyzer detects the concentration of the hydrogen in the hydrogen conveying pipeline and feeds back a detection result signal to the controller; the controller judges whether the hydrogen concentration is lower than a preset value or not, and if the judgment result is negative, the hydrogen conveying pipeline directly conveys the hydrogen to a hydrogen post-treatment and purification system; and if the judgment result is yes, the controller controls the first input pipe to convey the high-purity hydrogen to the hydrogen conveying pipeline.
Preferably, in the electrolytic gas recovery method, the step of controlling the first input pipe to supply the high-purity hydrogen gas to the hydrogen gas supply line by the controller includes:
01) the controller calculates according to a hydrogen purity signal fed back by the hydrogen and oxygen analyzer and a flow signal fed back by a first hydrogen flow meter in the gas recovery device to obtain the required high-purity hydrogen amount;
02) and the controller feeds back a control signal to the regulating valve on the first input pipe according to the calculation result in the step 01) and the flow signal fed back by the second hydrogen flow meter.
Preferably, the electrolytic gas recovery method further includes:
the oxygen hydrogen analyzer of the gas recovery device detects the concentration of oxygen in the oxygen conveying pipeline and feeds back a detection result signal to the controller; the controller judges whether the oxygen concentration is lower than a preset value, and if the judgment result is negative, the oxygen conveying pipeline directly discharges oxygen; and if the judgment result is yes, the controller controls the second input pipe to convey compressed air to the oxygen conveying pipeline.
Preferably, in the electrolytic gas recovery method, the step of controlling the second input pipe to supply the compressed air to the oxygen supply pipe by the controller includes:
001) the controller calculates according to an oxygen purity signal fed back by the hydrogen analyzer in oxygen and a flow signal fed back by an oxygen flow meter in the gas recovery device to obtain the required compressed air amount;
002) and the controller feeds back a control signal to the regulating valve on the second input pipe according to the calculation result in the step 001) and the flow signal fed back by the compressed air flow meter.
The invention provides a gas recovery device of electrolytic bath equipment, which comprises an electrolytic bath, wherein a hydrogen conveying pipeline and an oxygen conveying pipeline are respectively arranged on two sides of the electrolytic bath; the hydrogen conveying pipeline is communicated with a first input pipe capable of providing high-purity hydrogen; still be equipped with the oxygen analysis appearance in the hydrogen of arranging between first input tube and electrolysis trough on the hydrogen conveying line, the oxygen analysis appearance is arranged in the hydrogen and is arranged in the hydrogen conveying line hydrogen purity to with testing result feedback to controller, the controller can be when hydrogen purity is less than the default control first input tube and carry high-purity hydrogen to the hydrogen conveying line.
The gas recovery device of the electrolytic cell equipment detects the purity of hydrogen in the hydrogen conveying pipeline by using the hydrogen intermediate oxygen analyzer, and controls the first input pipe to convey high-purity hydrogen to the hydrogen conveying pipeline by the controller when the hydrogen purity in the hydrogen conveying pipeline is lower than a preset value, so that the purity of unqualified low-purity hydrogen in the hydrogen conveying pipeline is improved, and qualified hydrogen products are generated by a hydrogen post-treatment and purification system connected with the tail end of the hydrogen conveying pipeline.
The invention also provides electrolytic cell equipment applying the gas recovery device, which can produce qualified hydrogen products.
The invention also provides an electrolytic gas recovery method for the gas recovery device, which improves the quality of hydrogen products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 drawings without creative efforts.
FIG. 1 is a schematic view of a gas recovery apparatus of an electrolytic cell apparatus according to an embodiment of the present invention;
FIG. 2 is a flow chart of an electrolytic gas recovery method provided by an embodiment of the present invention;
wherein, in fig. 1:
a second input pipe 101; a compressed air flow meter 102; an oxygen flow meter 103; one- way valves 104, 113; pressure reducing valves 105, 112; an oxygen hydrogen analyzer 106; a controller 107; an oxygen delivery line 108; a hydrogen gas delivery line 109; a hydrogen mesooxygen analyzer 110; a first input pipe 111; a first hydrogen flow meter 114; a back pressure valve 115; a second hydrogen flow meter 116; an electrolytic cell 117; the valves 1011, 1111 are adjusted.
Detailed Description
The embodiment of the invention discloses a gas recovery device of electrolytic cell equipment, which utilizes a hydrogen oxygen analyzer to detect the purity of hydrogen in a hydrogen conveying pipeline, and controls a first input pipe to convey high-purity hydrogen into the hydrogen conveying pipeline by a controller when the hydrogen purity is lower than a preset value, so that the purity of unqualified low-purity hydrogen generated on the hydrogen side of an electrolytic cell is improved, and a hydrogen post-processing and purifying system connected with the tail end of the hydrogen conveying pipeline is ensured to generate qualified hydrogen products. The embodiment of the invention also discloses electrolytic cell equipment applying the gas recovery device and an electrolytic gas recovery method for the gas recovery device.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a gas recycling device for an electrolytic cell apparatus, including an electrolytic cell 117, wherein a hydrogen conveying pipeline 109 and an oxygen conveying pipeline 108 are respectively installed at two sides of the electrolytic cell 117; the hydrogen conveying pipeline 109 is communicated with a first input pipe 111 which can provide high-purity hydrogen; the hydrogen gas conveying pipeline 109 is also provided with a hydrogen and oxygen analyzer 110 arranged between the first input pipe 111 and the electrolytic bath 117, the hydrogen and oxygen analyzer 110 is used for detecting the purity of the hydrogen gas in the hydrogen gas conveying pipeline 109 and feeding back the detection result to the controller 107, and the controller 107 can control the first input pipe 111 to convey the high-purity hydrogen gas into the hydrogen gas conveying pipeline 109 when the purity of the hydrogen gas in the hydrogen gas conveying pipeline 109 is lower than a preset value. The end of the hydrogen transfer line 109 to which the electrolyzer is connected is the head end and the other end is the tail end for communication with a hydrogen aftertreatment and purification system.
The gas recovery device of the electrolyzer equipment utilizes the hydrogen mesogen analyzer 110 to detect the purity of hydrogen in the hydrogen conveying pipeline 109, and when the purity of hydrogen in the hydrogen conveying pipeline 109 is lower than a preset value, the controller 107 controls the first input pipe 111 to convey high-purity hydrogen to the hydrogen conveying pipeline 109, so that the purity of unqualified low-purity hydrogen in the hydrogen conveying pipeline 109 is improved, and a hydrogen post-processing and purifying system connected with the tail end of the hydrogen conveying pipeline 109 is ensured to generate qualified hydrogen products.
In addition, the gas recovery apparatus provided in the present embodiment only delivers high purity hydrogen to the hydrogen delivery pipeline 109 when the hydrogen purity in the hydrogen delivery pipeline 109 is lower than the preset value, that is, unqualified low purity hydrogen is generated on the hydrogen side of the electrolytic cell 117, thereby avoiding wasting high purity hydrogen.
Preferably, in the gas recovery apparatus provided in the above embodiment, the hydrogen gas delivery pipe 109 is provided with the first hydrogen gas flow meter 114 located between the first input pipe 111 and the electrolytic bath 117, and the first input pipe 111 is provided with the second hydrogen gas flow meter 116 and the regulating valve 1111; the first hydrogen flow meter 114 and the second hydrogen flow meter 116 are connected to the controller 107, respectively; regulating valve 1111 is controlled by controller 107; the controller 107 controls the adjusting valve 1111 of the first input pipe 111 according to the hydrogen purity signal fed back from the hydrogen oxyhydrogen analyzer 110, the flow signal fed back from the first hydrogen flow meter 114, and the flow signal fed back from the second hydrogen flow meter 116.
In the solution provided in this embodiment, the first hydrogen flow meter 114 is installed on the hydrogen conveying pipeline 109, so that the hydrogen flow rate can be monitored in real time, and meanwhile, the opening degree of the regulating valve 1111 is controlled by the controller 107 in combination with the hydrogen concentration detected by the hydrogen intermediate oxygen analyzer 110 and the high-purity hydrogen flow rate fed back by the second hydrogen flow meter 116, so as to finally ensure that the purity of the mixed hydrogen is qualified, thereby not only avoiding resource waste caused by mixing too much high-purity hydrogen, but also preventing insufficient purity of the mixed hydrogen caused by mixing too little high-purity hydrogen.
In the gas recovery apparatus provided in the above embodiment, the hydrogen gas delivery pipe 109 is provided with the pressure reducing valve 112 and the back pressure valve 115, the pressure reducing valve 112 is located between the electrolytic bath 117 and the inlet end of the first hydrogen gas flow meter 114, and the back pressure valve 115 is located between the outlet end of the first hydrogen gas flow meter 114 and the first input pipe 111.
In this embodiment, the front end of the first hydrogen flowmeter 114 is provided with the pressure reducing valve 112, and the rear end is provided with the back pressure valve 115, so that the front-back pressure difference of the first hydrogen flowmeter 114 can be kept stable, and the stability of the flow counting of the first hydrogen flowmeter 114 can be ensured.
Furthermore, in the gas recycling device provided in the above embodiment, the hydrogen gas delivery pipe 109 is provided with a check valve 113, and the check valve 113 is located between the electrolytic cell 117 and the first input pipe 111. The delivery direction of the non-return valve 113 is directed away from the electrolytic cell 117.
The hydrogen conveying pipeline 109 is provided with a one-way valve 113 which can prevent sudden injection of high-purity hydrogen from causing sudden increase of pressure difference between hydrogen and oxygen in the electrolytic cell 117 and aggravation of hydrogen-oxygen mixing, thereby avoiding safety accidents.
Specifically, in the gas recovery apparatus provided in the above embodiment, the pressure reducing valve 112, the check valve 113, the hydrogen medium oxygen analyzer 110, the first hydrogen flow meter 114, the backpressure valve 115, and the first input pipe 111 are arranged in this order along the conveying direction of the hydrogen conveying pipe 109.
In order to solve the problem that the hydrogen content in the oxygen generated by the electrolyzer is increased under the condition of small load and the safety accident is very easily caused once the explosion limit (4%) is exceeded, the following scheme is provided in the embodiment:
the oxygen conveying pipeline 108 is communicated with a second input pipe 101 capable of providing compressed air, the oxygen conveying pipeline 108 is further provided with an oxygen hydrogen analyzer 106 arranged between the second input pipe 101 and the electrolytic cell 117, the oxygen hydrogen analyzer 106 is used for detecting the oxygen purity in the oxygen conveying pipeline 108 and feeding back a detection result to the controller 107, and the controller 107 can control the second input pipe 101 to convey the compressed air into the oxygen conveying pipeline 108 when the oxygen purity is lower than a preset value.
The gas recovery device provided by this embodiment utilizes the second input pipe 101 to convey compressed air into the oxygen conveying pipeline 108, so as to reduce the content of hydrogen in the gas conveyed by the oxygen conveying pipeline 108 and improve the safety factor.
Preferably, in the gas recovery apparatus, the oxygen gas supply line 108 is provided with an oxygen gas flow meter 103 located between the second inlet pipe 101 and the electrolytic bath 117, and the second inlet pipe 101 is provided with a compressed air flow meter 102; the oxygen flow meter 103 and the compressed air flow meter 102 are respectively connected with a controller 107;
the controller 107 controls the adjusting valve 1011 on the second input pipe 108 according to the oxygen purity signal fed back from the hydrogen analyzer 106 in oxygen, the flow rate signal fed back from the oxygen flow meter 103, and the flow rate signal fed back from the compressed air flow meter 102.
In the gas recovery device provided by this embodiment, the oxygen flow meter 103 is installed on the oxygen delivery pipe 108, so that the oxygen flow rate can be monitored in real time, and meanwhile, the oxygen concentration signal fed back by the hydrogen analyzer 106 in oxygen and the compressed air flow rate fed back by the compressed air flow meter 102 are combined, and the controller 107 is used for controlling the regulating valve 1011, so that the sufficient amount of compressed air is mixed into the oxygen delivery pipe 108, the oxygen concentration is diluted, the hydrogen content in oxygen is ensured to be lower than the explosion range under the condition of small load, and the safety risk is reduced.
In the gas recovery device provided in the above embodiment, the oxygen delivery pipe 108 is provided with the pressure reducing valve 105, and the pressure reducing valve 105 is located between the electrolytic bath 117 and the inlet end of the oxygen flow meter 103. The tail end of the oxygen conveying pipeline 108 can be set to be communicated with the atmosphere, that is, the oxygen generated on the oxygen side of the electrolytic cell 117 is directly discharged to the atmosphere, of course, the oxygen generated on the oxygen side of the electrolytic cell 117 can also be collected by other devices, correspondingly, a back pressure valve can be arranged on the oxygen conveying pipeline 108, the back pressure valve is positioned between the second input pipe 101 and the outlet end of the oxygen flow meter 103, meanwhile, the compressed air needs to be replaced by high-purity oxygen, and correspondingly, the process of controlling the second input pipe 101 to provide high-purity oxygen to the oxygen conveying pipeline 108 by the controller 107 is the same as the process of controlling the first input pipe 111 to convey high-purity hydrogen to the hydrogen conveying pipeline 109, and the description is omitted here.
Preferably, in the gas recovery apparatus, the oxygen gas supply line 108 is provided with a check valve 104, and the check valve 104 is located between the electrolytic bath 117 and the second inlet pipe 101.
The oxygen conveying pipeline 108 is provided with a one-way valve 104, which prevents the sudden injection of compressed air from causing the sudden increase of the pressure difference between the hydrogen and oxygen in the electrolytic cell 117 and aggravating the mixing of the hydrogen and the oxygen, and avoids causing safety accidents.
Specifically, the above-described embodiment provides the gas recovery apparatus in which the pressure reducing valve 105, the check valve 104, the hydrogen in oxygen analyzer 106, the oxygen flow meter 103, and the second input pipe 101 are arranged in this order along the conveying direction of the oxygen conveying pipe 108.
The operation principle of the gas recovery device provided by the embodiment is specifically described as follows:
1. under the condition of small load, the hydrogen purity is detected by the hydrogen oxygen analyzer 110 in the hydrogen conveying pipeline 109 at the hydrogen side of the electrolytic cell 117, when the hydrogen purity meets the requirement, the hydrogen conveying pipeline 109 directly conveys the hydrogen to a hydrogen post-treatment and purification system, and at the moment, the controller 107 controls the regulating valve 1111 to keep a closed state and forbids high-purity hydrogen to be mixed into the hydrogen conveying pipeline 109.
2. Under the condition of small load, the hydrogen purity is detected by the hydrogen oxygen analyzer 110 in the hydrogen conveying pipeline 109 at the hydrogen side of the electrolytic cell 117, when the hydrogen purity is lower than a preset value, the hydrogen oxygen analyzer 110 and the first hydrogen flow meter 114 feed back purity and flow signals to the controller 107, after calculation, the controller 107 feeds back control signals to the regulating valve 1111 according to the calculation result and the flow signals fed back by the second hydrogen flow meter 116, so that the required amount of high-purity hydrogen is mixed into the hydrogen conveying pipeline 109, and the purity of the mixed hydrogen is ensured to be qualified on the premise of not wasting too much high-purity hydrogen resources.
3. Under the condition of small load, the oxygen purity is detected by the hydrogen analyzer 106 in oxygen in the oxygen conveying pipeline 108 on the oxygen side of the electrolytic cell 117, when the hydrogen content in the oxygen meets the requirement, the oxygen is directly emptied by the oxygen conveying pipeline 108, and at the moment, the controller 107 controls the regulating valve 1011 to keep a closed state, and compressed air is forbidden to be mixed into the oxygen conveying pipeline 108.
4. Under the condition of small load, the oxygen purity is detected by the hydrogen analyzer 106 in oxygen in the oxygen conveying pipeline 108 on the oxygen side of the electrolytic cell 117, when the oxygen purity is lower than the requirement, the purity and the flow signal are fed back to the controller 107 by the hydrogen analyzer 106 in oxygen and the oxygen flowmeter 103, after calculation, the controller 107 feeds back a control signal to the regulating valve 1011 according to the calculation result and the flow signal fed back by the compressed air flowmeter 102, so that a proper amount of compressed air is mixed into the oxygen conveying pipeline 108 to reduce the hydrogen content in oxygen, the safety factor is improved, and resource waste caused by excessive compressed air is avoided.
5. When the oxygen generated at the oxygen side of the electrolytic cell 117 needs to be collected, a back pressure valve needs to be added between the oxygen flow meter 103 and the second input pipe 101 on the oxygen delivery pipe 108, and the compressed air mixed in the oxygen delivery pipe 108 needs to be replaced by high-purity oxygen.
The embodiment of the invention also provides electrolytic cell equipment which comprises a gas recovery device, wherein the gas recovery device is the gas recovery device provided by the embodiment.
The electrolytic cell equipment provided by the embodiment can produce qualified hydrogen products by applying the gas recovery device provided by the embodiment.
Of course, the electrolytic cell apparatus provided in this embodiment also has other effects related to the gas recovery device provided in the above embodiments, and will not be described herein again.
Referring to fig. 2, an embodiment of the present invention further provides an electrolytic gas recovery method, which is used for the gas recovery device provided in the foregoing embodiment, and includes:
the hydrogen oxyhydrogen analyzer 110 detects the concentration of hydrogen in the hydrogen conveying pipeline 109 and feeds back a detection result signal to the controller 107; the controller 107 judges whether the hydrogen concentration is lower than a preset value, and if the judgment result is 'no', the hydrogen conveying pipeline 109 directly conveys the hydrogen to the hydrogen post-treatment and purification system; if the determination result is "yes", the controller 107 controls the first input pipe 111 to supply high-purity hydrogen gas to the hydrogen gas supply pipe 109.
The above-mentioned "the controller 107 controls the first input pipe 111 to supply the high-purity hydrogen gas to the hydrogen gas supply line 109" includes:
01) the controller 107 calculates according to the hydrogen purity signal fed back by the hydrogen and oxygen analyzer 110 and the flow signal fed back by the first hydrogen flow meter 114 in the gas recovery device to obtain the required high-purity hydrogen amount;
02) the controller 107 feeds back a control signal to the regulating valve 1111 on the first input pipe 111 based on the calculation result in the step 01) and the flow signal fed back by the second hydrogen flow meter 116.
The electrolytic gas recovery method further includes:
an oxygen hydrogen analyzer 106 of the gas recovery device detects the concentration of oxygen in an oxygen conveying pipeline 108 and feeds back a detection result signal to a controller 107; the controller 107 judges whether the oxygen concentration is lower than a preset value, and if the judgment result is 'no', the oxygen conveying pipeline 108 directly discharges the oxygen; if the determination result is "yes", the controller 107 controls the second input pipe 101 to feed the compressed air into the oxygen feed pipe 108.
The above-mentioned "the controller 107 controls the second input pipe 101 to deliver the compressed air to the oxygen delivery pipe 108" includes:
001) the controller 107 calculates according to the oxygen purity signal fed back by the hydrogen analyzer 106 in oxygen and the flow signal fed back by the oxygen flowmeter 103 in the gas recovery device to obtain the required compressed air amount;
002) the controller 107 feeds back a control signal to the regulating valve 1011 on the second input pipe 101 based on the calculation result in the step 001) and the flow rate signal fed back by the compressed air flow meter 102.
The electrolytic gas recovery method provided by the embodiment is used for the gas recovery device provided by the embodiment, and can improve the quality of hydrogen products.
Of course, the electrolytic gas recovery method provided in this embodiment also has other effects related to the gas recovery device provided in the above embodiments, and will not be described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The method disclosed by the embodiment corresponds to the device disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The gas recovery device of the electrolytic cell equipment is characterized by comprising an electrolytic cell, wherein a hydrogen conveying pipeline and an oxygen conveying pipeline are respectively arranged on two sides of the electrolytic cell; the hydrogen conveying pipeline is communicated with a first input pipe capable of providing high-purity hydrogen; the hydrogen conveying pipeline is also provided with a hydrogen and oxygen analyzer arranged between the first input pipe and the electrolytic cell, the hydrogen and oxygen analyzer is used for detecting the purity of hydrogen in the hydrogen conveying pipeline and feeding back a detection result to the controller, and the controller can control the first input pipe to convey high-purity hydrogen to the hydrogen conveying pipeline when the hydrogen purity is lower than a preset value;
the oxygen conveying pipeline is communicated with a second input pipe capable of providing compressed air, an oxygen hydrogen analyzer arranged between the second input pipe and the electrolytic cell is further arranged on the oxygen conveying pipeline, the oxygen hydrogen analyzer is used for detecting the oxygen purity in the oxygen conveying pipeline and feeding back a detection result to the controller, and the controller can control the second input pipe to convey the compressed air to the oxygen conveying pipeline when the oxygen purity is lower than a preset value;
the oxygen conveying pipeline is provided with an oxygen flow meter between the second input pipe and the electrolytic bath, and the second input pipe is provided with a compressed air flow meter; the oxygen flow meter and the compressed air flow meter are respectively connected with the controller;
and the controller controls the regulating valve on the second input pipe according to an oxygen purity signal fed back by the hydrogen analyzer in oxygen, a flow signal fed back by the oxygen flow meter and a flow signal fed back by the compressed air flow meter.
2. The gas recovery device of an electrolyzer unit according to claim 1, characterized in that the hydrogen delivery line is provided with a first hydrogen flow meter between the first inlet pipe and the electrolyzer, the first inlet pipe being provided with a second hydrogen flow meter; the first hydrogen flow meter and the second hydrogen flow meter are respectively connected with the controller;
the controller controls the regulating valve on the first input pipe according to the hydrogen purity signal fed back by the hydrogen and oxygen analyzer, the flow signal fed back by the first hydrogen flow meter and the flow signal fed back by the second hydrogen flow meter.
3. The gas recovery device of an electrolyzer apparatus as claimed in claim 2, characterized in that a pressure reducing valve and a back pressure valve are provided on the hydrogen delivery line, the pressure reducing valve being located between the electrolyzer and the inlet end of the first hydrogen flowmeter and the back pressure valve being located between the outlet end of the first hydrogen flowmeter and the first input pipe.
4. The gas recovery device of an electrolyzer unit according to claim 1, characterized in that a one-way valve is provided on the hydrogen delivery line, which is located between the electrolyzer and the first inlet pipe.
5. The gas recovery device of an electrolyzer unit according to claim 1, characterized in that a pressure relief valve is provided on the oxygen delivery line, the pressure relief valve being located between the electrolyzer and the inlet end of the oxygen flow meter.
6. A gas recovery device for an electrolyser plant as claimed in claim 5 wherein said oxygen delivery line is provided with a back pressure valve located between said second inlet line and the outlet end of said oxygen flow meter.
7. A gas recovery device for an electrolyser plant as claimed in any of claims 1-6 wherein said oxygen delivery line is provided with a one-way valve, said one-way valve being located between said electrolyser and said second input line.
8. An electrolysis cell installation comprising a gas recovery unit, characterised in that the gas recovery unit is a gas recovery unit of an electrolysis cell installation according to any one of claims 1 to 7.
9. An electrolytic gas recovery method for a gas recovery device of an electrolytic cell apparatus according to any one of claims 1 to 7, characterized by comprising:
the hydrogen medium oxygen analyzer detects the concentration of the hydrogen in the hydrogen conveying pipeline and feeds back a detection result signal to the controller; the controller judges whether the hydrogen concentration is lower than a preset value or not, and if the judgment result is negative, the hydrogen conveying pipeline directly conveys the hydrogen to a hydrogen post-treatment and purification system; if the judgment result is yes, the controller controls the first input pipe to convey high-purity hydrogen to the hydrogen conveying pipeline;
the oxygen hydrogen analyzer of the gas recovery device detects the concentration of oxygen in the oxygen conveying pipeline and feeds back a detection result signal to the controller; the controller judges whether the oxygen concentration is lower than a preset value, and if the judgment result is negative, the oxygen conveying pipeline directly discharges oxygen; if the judgment result is yes, the controller controls a second input pipe to convey compressed air to the oxygen conveying pipeline;
the step of controlling the second input pipe to deliver the compressed air to the oxygen delivery pipeline by the controller comprises the following steps:
001) the controller calculates according to an oxygen purity signal fed back by the hydrogen analyzer in oxygen and a flow signal fed back by an oxygen flow meter in the gas recovery device to obtain the required compressed air amount;
002) and the controller feeds back a control signal to the regulating valve on the second input pipe according to the calculation result in the step 001) and the flow signal fed back by the compressed air flow meter.
10. The electrolytic gas recovery process according to claim 9,
if the hydrogen conveying pipeline is provided with a first hydrogen flowmeter between the first input pipe and the electrolytic bath, the first input pipe is provided with a second hydrogen flowmeter; the first hydrogen flow meter and the second hydrogen flow meter are respectively connected with the controller; the controller controls the regulating valve on the first input pipe according to a hydrogen purity signal fed back by the hydrogen and oxygen analyzer, a flow signal fed back by the first hydrogen flow meter and a flow signal fed back by the second hydrogen flow meter;
wherein the "the controller controls the first input pipe to deliver high-purity hydrogen to the hydrogen delivery pipeline" comprises:
01) the controller calculates according to a hydrogen purity signal fed back by the hydrogen and oxygen analyzer and a flow signal fed back by a first hydrogen flow meter in the gas recovery device to obtain the required high-purity hydrogen amount;
02) and the controller feeds back a control signal to the regulating valve on the first input pipe according to the calculation result in the step 01) and the flow signal fed back by the second hydrogen flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471567.9A CN112626560B (en) | 2020-12-14 | 2020-12-14 | Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471567.9A CN112626560B (en) | 2020-12-14 | 2020-12-14 | Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112626560A CN112626560A (en) | 2021-04-09 |
| CN112626560B true CN112626560B (en) | 2022-04-08 |
Family
ID=75313103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011471567.9A Active CN112626560B (en) | 2020-12-14 | 2020-12-14 | Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112626560B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413174A (en) * | 2022-03-01 | 2022-04-29 | 廊坊广惠气体设备有限公司 | High-efficiency hydrogen recovery device and recovery method |
| CN115140712A (en) * | 2022-06-22 | 2022-10-04 | 清华大学 | Alkaline electrolyzed water hydrogen production system, oxygen impurity removal protection device and protection method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0486174B1 (en) * | 1990-11-16 | 1994-10-05 | Texaco Development Corporation | Process for producing high purity hydrogen |
| CN102191509B (en) * | 2009-12-29 | 2013-04-03 | 昆明理工大学 | Low-cost hydrogen production method by water electrolysis capable of occurring over a wide power supply voltage range |
| CN108692185B (en) * | 2018-06-13 | 2024-02-09 | 浙江氢航科技有限公司 | Hydrogen production and hydrogenation integrated machine for high-pressure high-purity hydrogen |
| CN111996542B (en) * | 2020-08-27 | 2021-12-10 | 阳光电源股份有限公司 | Hydrogen production system and control method thereof |
-
2020
- 2020-12-14 CN CN202011471567.9A patent/CN112626560B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112626560A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112626560B (en) | Electrolytic cell equipment, gas recovery device thereof and electrolytic gas recovery method | |
| EP3960901B1 (en) | Hydrogen production system and method for controlling the same | |
| CA3042173C (en) | Water electrolysis system and method of operating water electrolysis system | |
| CN214570954U (en) | Intelligent coagulant adding system | |
| CN110567657A (en) | Hydrogen leakage monitoring method for hydrogen energy locomotive | |
| CN108493467B (en) | Device for controlling hydrogen content in tail gas of fuel cell | |
| CN211170518U (en) | Advanced alkyne conveying device for preparing acetylene from natural gas | |
| CN206398370U (en) | A kind of anti-backflow feeding system | |
| CN114665128B (en) | Solid-state hydrogen storage and supply device and hydrogen supply method | |
| CN213266245U (en) | Distribution system of tin bath nitrogen-hydrogen protective gas | |
| CN111167326A (en) | Gas distribution instrument and gas distribution method | |
| CN206837792U (en) | Chlorine is removed the evil system | |
| CN215982011U (en) | Hydrogen-nitrogen ratio adjusting device for synthetic ammonia reaction | |
| CN211886298U (en) | Gas distribution instrument adjusting device and gas distribution instrument | |
| CN201817278U (en) | Device for feeding phosphoric acid in anthraquinone process of hydrogen peroxide production | |
| CN217922353U (en) | Water supply device for electrolytic hydrogen production | |
| CN218879553U (en) | Water purification system | |
| CN216856294U (en) | Three-impulse control system for controlling circulating hydrogen return deoxidation temperature | |
| CN214830700U (en) | Distributed electrolytic hydrogen production hydrogenation station | |
| CN219136941U (en) | Water electrolysis hydrogen production system | |
| CN218001149U (en) | Argon gas recovery system | |
| CN220724365U (en) | Electrolyte exit device of hydrogen production system | |
| CN219198890U (en) | Ultra-high purity gas single-side manual gas supply system | |
| CN210837963U (en) | Air supply device and base | |
| CN210648957U (en) | Welding gas steady voltage constant current device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220805 Address after: 230000 room 616, Baiyan Industrial Service Center, 188 Mingchuan Road, high tech Zone, Hefei, Anhui Province Patentee after: Sunshine Hydrogen Energy Technology Co.,Ltd. Address before: 230088 No. 1699 Xiyou Road, Hefei High-tech Zone, Anhui Province Patentee before: SUNGROW POWER SUPPLY Co.,Ltd. |
|
| TR01 | Transfer of patent right |