CN114086213A - Composite diaphragm for reducing energy consumption of hydrogen production by alkaline electrolysis of water - Google Patents
Composite diaphragm for reducing energy consumption of hydrogen production by alkaline electrolysis of water Download PDFInfo
- Publication number
- CN114086213A CN114086213A CN202111254851.5A CN202111254851A CN114086213A CN 114086213 A CN114086213 A CN 114086213A CN 202111254851 A CN202111254851 A CN 202111254851A CN 114086213 A CN114086213 A CN 114086213A
- Authority
- CN
- China
- Prior art keywords
- water
- electrolysis
- hydrogen
- less
- energy consumption
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 165
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 239000001257 hydrogen Substances 0.000 title claims abstract description 161
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 161
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 158
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 76
- 238000005265 energy consumption Methods 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 239000003513 alkali Substances 0.000 claims description 35
- 239000003792 electrolyte Substances 0.000 claims description 26
- 150000001875 compounds Chemical class 0.000 claims description 24
- -1 polytetrafluoroethylene Polymers 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000000498 cooling water Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 8
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 229910001424 calcium ion Inorganic materials 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 8
- 150000004706 metal oxides Chemical class 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 239000012044 organic layer Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 5
- 239000007772 electrode material Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 6
- 239000000446 fuel Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910009442 Y2O Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
- C25B13/00—Diaphragms; Spacing elements
- C25B13/02—Diaphragms; Spacing elements characterised by shape or form
-
- 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
- C25B13/00—Diaphragms; Spacing elements
- C25B13/04—Diaphragms; Spacing elements characterised by the material
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a composite diaphragm for reducing the hydrogen production energy consumption of alkaline electrolyzed water, which comprises a water electrolysis bath and a composite diaphragm, wherein three electrodes are arranged in the water electrolysis bath, the composite diaphragm is arranged at the bottom end in the water electrolysis bath, and a plurality of through holes are arranged on the surface of the composite diaphragm. 80% -90% of the cost is the problem of electricity charge, and the cost of hydrogen production by water electrolysis is greatly saved.
Description
Technical Field
The invention relates to the technical field of composite diaphragms, in particular to a composite diaphragm capable of reducing energy consumption of hydrogen production by alkaline electrolysis of water.
Background
The diaphragm is a thin film used for separating the positive pole and the negative pole during the electrolytic reaction so as to prevent the direct reaction in the electrolytic cell from losing energy. In the construction of lithium batteries, the separator is one of the key internal components. The performance of the diaphragm determines the interface structure, internal resistance and the like of the battery, directly influences the capacity, circulation, safety performance and other characteristics of the battery, and the diaphragm with excellent performance plays an important role in improving the comprehensive performance of the battery.
Carbon dioxide and hydrogen generate reverse water-steam shift reaction to generate carbon monoxide, the carbon monoxide can be adsorbed in a catalyst of a fuel cell to cause serious reduction of the cell performance, the hydrogen purification not only has higher cost, but also is still difficult to meet the control requirement of the fuel hydrogen on trace impurities even if the purity reaches the 99.999 percent standard, the main problems of hydrogen production by water electrolysis at present are high energy consumption and low efficiency, 80 to 90 percent of the cost is electricity charge in the water electrolysis production, and therefore how to reduce the energy consumption (electricity consumption) of water electrolysis is the key point of the problem.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water, so as to solve the problems of high energy consumption and low efficiency in the background technology, and 80-90% of the cost is the electricity charge in the water electrolysis production.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the composite diaphragm for reducing the hydrogen production energy consumption of alkaline electrolyzed water comprises a water electrolysis tank and a composite diaphragm, wherein three electrodes are arranged inside the water electrolysis tank, the composite diaphragm is arranged at the bottom end inside the water electrolysis tank, a plurality of through holes are formed in the surface of the composite diaphragm, an organic layer and an inorganic layer are respectively arranged on the material inside the composite diaphragm, the raw material of the composite diaphragm comprises fluorocarbon and metal oxide particles, wherein the organic part adopts polytetrafluoroethylene, and the inorganic part usually adopts the metal oxide particles such as TiO, ZrO, YO and the like which have good chemical stability and are hydrophilic.
A composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water comprises the following steps:
the method comprises the following steps: preparing equipment required by an experiment;
step two: making the direct current power consumption level of unit hydrogen production yield of the water electrolysis hydrogen production system equipment;
step three: preparing raw material water, electrolyte and circulating cooling water for hydrogen production by water electrolysis;
step four: three polar plates are vertically placed in the electrolytic cell in parallel, the whole electrolytic cell is divided into four electrolytic chambers, the three polar plates are connected in series, the bottom ends of the interiors of the four electrolytic chambers are provided with composite diaphragms, and the composite diaphragms are placed on the bottom end surfaces of the four electrolytic chambers in parallel in a corrugated manner;
step five: introducing raw material water prepared in the third step into a water electrolysis bath, then switching on direct current to a polar plate in the water electrolysis bath, decomposing the water in the water electrolysis bath into H2 and O2 under the action of the direct current, respectively entering a hydrogen and oxygen separation washer in a frame together with electrolyte, and then carrying out gas-liquid separation, washing and cooling;
step six: mixing the separated electrolyte with supplemented raw material water, and then feeding the mixture back to an electrolytic cell for circulation through an alkali liquor cooler, an alkali liquor circulating pump and a filter, and carrying out electrolysis, wherein the electrolysis process is respectively subjected to low-pressure electrolysis, normal-pressure electrolysis and medium-pressure electrolysis;
step seven: adjusting the flow rate of circulating cooling water in the alkali liquor cooler, controlling the temperature of the returned alkali liquor to control the working temperature of the electrolytic cell, so that the system can run safely, and outputting the separated hydrogen under the control of an adjusting valve and sending the hydrogen into a hydrogen storage tank;
step eight: and measuring the concentration of hydrogen in the hydrogen storage tank and the electric energy consumption condition of direct current.
Preferably, in the first step, the equipment required for the experiment comprises: the system comprises a water electrolysis tank, a separator, a cooler, a pressure regulating valve, an alkali liquor filter, an alkali liquor circulating pump, a raw water preparation device, an alkali liquor preparation and storage device, a hydrogen purification device, a hydrogen storage tank, a hydrogen compressor, a steam detection device, a direct current power supply, an automatic control device and the like, wherein the input voltage value of an external power supply system of the water electrolysis hydrogen production system is determined by a user, the voltage grade is preferably 10kV and 380V, and each water electrolysis tank of the water electrolysis hydrogen production system is independently provided with the direct current power supply.
Preferably, in the second step, the electric energy consumption of the unit hydrogen is less than or equal to 4.4 kW.h/m3The grade is good, and the unit hydrogen electric energy consumption is less than or equal to 4.6kW·h/m3The grade is first grade, and the electric energy consumption of unit hydrogen is less than or equal to 4.8 kW.h/m3The grade is two-stage (A), and the electric energy consumption of unit hydrogen is less than or equal to 5.0 kW.h/m3When the grade is two (B).
Preferably, in the third step, the water quality of the raw water for water electrolysis satisfies the following requirements: resistivity is more than or equal to 1.0 multiplied by 105Omega cm, the content of iron ions is less than 1.0mg/L, the content of chloride ions is less than 2.0mg/L, the content of suspended matters is less than 1.0mg/L, and the quality requirements of the electrolyte are as follows: concentration 27-32%, CO3 2-Content < 100mg/L, Fe2+、Fe3+The content is less than 3mg/L, CL-The content is less than 800mg/L, and the water quality of the circulating cooling water is required to be as follows: the PH value is 6.5-8.0, the content of chloride ions is less than 200mg/L, the content of sulfate radicals is less than 200mg/L, the content of calcium ions is less than 200mg/L, the content of iron ions is less than 1.0mg/L, the content of ammonium ions is less than 1.0mg/L, and the content of dissolved silicic acid is less than 50 mg/L.
Preferably, in the fourth step, the surface of the composite diaphragm is provided with a plurality of through holes, so that on one hand, the through holes are used for passing through generated hydrogen and oxygen, and on the other hand, the contact area between the electrolyte and the electrode material can be greatly increased, so that the real current density on the surface of the electrode can be effectively reduced in the industrial electrolysis process with higher current density, and further, the hydrogen evolution overpotential of the electrode in the electrolysis reaction process is greatly reduced.
Preferably, in the sixth step, the system working pressure ρ of the low-pressure water electrolysis hydrogen production system is less than 0.1 MPa.
Preferably, in the sixth step, the system working pressure of the normal-pressure water electrolysis hydrogen production system is greater than or equal to 0.1MPa and less than 1.6 MPa.
Preferably, in the sixth step, the system working pressure of the medium-pressure water electrolysis hydrogen production system is 1.6MPa or more and rho less than 10 MPa.
Preferably, in the seventh step, the working temperature environment is controlled to be between 45 and 60 ℃.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the plurality of through holes are formed in the surface of the composite diaphragm, on one hand, the composite diaphragm can be used for passing through generated hydrogen and oxygen, on the other hand, the contact area between the electrolyte and an electrode material can be greatly increased, so that the real current density on the surface of the electrode can be effectively reduced in the industrial electrolysis process with higher current density, and further, the hydrogen evolution overpotential of the electrode in the electrolysis reaction process is greatly reduced, so that the hydrogen production cost by water electrolysis is reduced, the hydrogen production efficiency by water electrolysis is increased, the problems that the main problems of high energy consumption and low efficiency in the existing hydrogen production by water electrolysis are solved, 80% -90% of the cost is the electricity charge in the water electrolysis production are solved, and the hydrogen production cost by water electrolysis is greatly saved;
(2) the hydrogen is produced by water electrolysis, and the hydrogen and oxygen are produced by water electrolysis, so that the hydrogen-producing composite diaphragm does not contain harmful impurities, is an ideal hydrogen source of the fuel cell, has important effects on improving the performance of the fuel cell and prolonging the service life of the cell, and can effectively improve the hydrophilic performance of the diaphragm by adding hydrophilic inorganic particles into the composite diaphragm, thereby improving the conductive and gas barrier properties of the diaphragm;
(3) the organic part of the composite diaphragm is prepared by adopting polytetrafluoroethylene, so that the cost is effectively reduced, the using amount of noble metals is reduced as much as possible, the electrode material is produced on a large scale, the activity and the stability of the electrode material can meet the requirements of industrial production, and the electrode material has important significance for the popularization of hydrogen production by alkaline electrolyzed water.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic structural diagram of a composite diaphragm reclaimed water electrolytic cell for reducing the energy consumption of hydrogen production by alkaline electrolysis of water, which is provided by the invention;
FIG. 2 is a schematic structural diagram of the composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water, which is provided by the invention;
in the figure: 1. a water electrolysis cell; 2. an electrode; 3. a composite membrane; 4. a through hole; 5. an organic layer; 6. an inorganic layer.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
Example one
The utility model provides a reduce compound diaphragm of alkaline electrolysis water hydrogen manufacturing energy consumption, including water electrolysis tank 1 and compound diaphragm 3, 1 inside three electrodes 2 that are provided with of water electrolysis tank, the inside bottom of water electrolysis tank 1 is provided with compound diaphragm 3, the surface of compound diaphragm 3 is provided with a plurality of through-hole 4, the inside material of compound diaphragm 3 is provided with organic layer 5 and inorganic layer 6 respectively, compound diaphragm 3's raw and other materials include fluorocarbon and metal oxide granule, wherein, organic part adopts polytetrafluoroethylene, inorganic part adopts good and hydrophilic TiO of chemical stability usually, and inorganic part is usually2、ZrO2、Y2O3And the like.
A composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water comprises the following steps:
the method comprises the following steps: preparing equipment required by an experiment;
step two: making the direct current power consumption level of unit hydrogen production yield of the water electrolysis hydrogen production system equipment;
step three: preparing raw material water, electrolyte and circulating cooling water for hydrogen production by water electrolysis;
step four: three polar plates are vertically placed in the electrolytic cell in parallel, the whole electrolytic cell is divided into four electrolytic chambers, the three polar plates are connected in series, the bottom ends of the interiors of the four electrolytic chambers are provided with composite diaphragms, and the composite diaphragms are placed on the bottom end surfaces of the four electrolytic chambers in parallel in a corrugated manner;
step five: introducing raw material water prepared in the third step into a water electrolysis bath, then switching on direct current to a polar plate in the water electrolysis bath, decomposing the water in the water electrolysis bath into H2 and O2 under the action of the direct current, respectively entering a hydrogen and oxygen separation washer in a frame together with electrolyte, and then carrying out gas-liquid separation, washing and cooling;
step six: mixing the separated electrolyte with supplemented raw material water, and then feeding the mixture back to an electrolytic cell for circulation through an alkali liquor cooler, an alkali liquor circulating pump and a filter, and carrying out electrolysis, wherein the electrolysis process is respectively subjected to low-pressure electrolysis, normal-pressure electrolysis and medium-pressure electrolysis;
step seven: adjusting the flow rate of circulating cooling water in the alkali liquor cooler, controlling the temperature of the returned alkali liquor to control the working temperature of the electrolytic cell, so that the system can run safely, and outputting the separated hydrogen under the control of an adjusting valve and sending the hydrogen into a hydrogen storage tank;
step eight: and measuring the concentration of hydrogen in the hydrogen storage tank and the electric energy consumption condition of direct current.
Preferably, in the first step, the equipment required for the experiment comprises: the system comprises a water electrolysis tank, a separator, a cooler, a pressure regulating valve, an alkali liquor filter, an alkali liquor circulating pump, a raw water preparation device, an alkali liquor preparation and storage device, a hydrogen purification device, a hydrogen storage tank, a hydrogen compressor, a steam detection device, a direct current power supply, an automatic control device and the like, wherein the input voltage value of an external power supply system of the water electrolysis hydrogen production system is determined by a user, the voltage grade is preferably 10kV and 380V, and each water electrolysis tank of the water electrolysis hydrogen production system is independently provided with the direct current power supply.
Preferably, in the second step, the electric energy consumption of the unit hydrogen is less than or equal to 4.4 kW.h/m3The grade is good, and the electric energy consumption of unit hydrogen is less than or equal to 4.6 kW.h/m3The grade is first grade, and the electric energy consumption of unit hydrogen is less than or equal to 4.8 kW.h/m3The grade is two-stage (A), and the electric energy consumption of unit hydrogen is less than or equal to 5.0 kW.h/m3Then, the grade is two (B), as specified in the following table:
preferably, in step three, the water quality of the raw water for water electrolysis satisfies the following requirements: resistivity is not less than1.0×105Omega cm, the content of iron ions is less than 1.0mg/L, the content of chloride ions is less than 2.0mg/L, the content of suspended matters is less than 1.0mg/L, and the quality requirements of the electrolyte are as follows: concentration 27-32%, CO3 2-Content < 100mg/L, Fe2+、Fe3+The content is less than 3mg/L, CL-The content is less than 800mg/L, and the water quality of the circulating cooling water is required to be as follows: pH value of 6.5-8.0, chloride ion content of less than 200mg/L, sulfate ion content of less than 200mg/L, calcium ion content of less than 200mg/L, iron ion content of less than 1.0mg/L, ammonium ion content of less than 1.0mg/L, and dissolved silicic acid content of less than 50mg/L, as shown in the following table:
| name (R) | Index (I) |
| Resistivity of | ≥1.0×105 |
| Iron ion content | ＜1.0 |
| Chloride ion content | ＜2.0 |
| Suspended matter | ＜1.0 |
| Name (R) | |
| pH value | 6.5-8.0 |
| Chloride ion content | ＜200mg/L |
| Sulfate radical content | ＜200mg/L |
| Calcium ion content | ＜200mg/L |
| Iron ion content | ＜1.0mg/L |
| Ammonium ion content | ＜1.0mg/L |
| Content of dissolved silicic acid | ＜50mg/L |
Preferably, in the fourth step, the surface of the composite diaphragm is provided with a plurality of through holes, so that on one hand, the composite diaphragm is used for passing through generated hydrogen and oxygen, and on the other hand, the contact area between the electrolyte and the electrode material can be greatly increased, so that the real current density on the surface of the electrode can be effectively reduced in the industrial electrolysis process with higher current density, and further, the hydrogen evolution overpotential of the electrode in the electrolysis reaction process is greatly reduced.
Preferably, in the sixth step, the system working pressure rho of the low-pressure water electrolysis hydrogen production system is less than 0.1 MPa.
Preferably, in the sixth step, the system working pressure of the normal-pressure water electrolysis hydrogen production system is more than or equal to 0.1MPa and less than 1.6 MPa.
Preferably, in the sixth step, the system working pressure of the medium-pressure water electrolysis hydrogen production system is 1.6MPa or more and rho less than 10 MPa.
Preferably, in the seventh step, the working temperature environment is controlled to be 45 ℃.
Example two
The utility model provides a reduce compound diaphragm of alkaline electrolysis water hydrogen manufacturing energy consumption, including water electrolysis tank 1 and compound diaphragm 3, 1 inside three electrodes 2 that are provided with of water electrolysis tank, the inside bottom of water electrolysis tank 1 is provided with compound diaphragm 3, the surface of compound diaphragm 3 is provided with a plurality of through-hole 4, the inside material of compound diaphragm 3 is provided with organic layer 5 and inorganic layer 6 respectively, compound diaphragm 3's raw and other materials include fluorocarbon and metal oxide granule, wherein, organic part adopts polytetrafluoroethylene, inorganic part adopts usually that chemical stability is good and metal oxide granules such as hydrophilic TiO2, ZrO2, Y2O 3.
A composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water comprises the following steps:
the method comprises the following steps: preparing equipment required by an experiment;
step two: making the direct current power consumption level of unit hydrogen production yield of the water electrolysis hydrogen production system equipment;
step three: preparing raw material water, electrolyte and circulating cooling water for hydrogen production by water electrolysis;
step four: three polar plates are vertically placed in the electrolytic cell in parallel, the whole electrolytic cell is divided into four electrolytic chambers, the three polar plates are connected in series, the bottom ends of the interiors of the four electrolytic chambers are provided with composite diaphragms, and the composite diaphragms are placed on the bottom end surfaces of the four electrolytic chambers in parallel in a corrugated manner;
step five: introducing raw material water prepared in the third step into a water electrolysis bath, then switching on direct current to a polar plate in the water electrolysis bath, decomposing the water in the water electrolysis bath into H2 and O2 under the action of the direct current, respectively entering a hydrogen and oxygen separation washer in a frame together with electrolyte, and then carrying out gas-liquid separation, washing and cooling;
step six: mixing the separated electrolyte with supplemented raw material water, and then feeding the mixture back to an electrolytic cell for circulation through an alkali liquor cooler, an alkali liquor circulating pump and a filter, and carrying out electrolysis, wherein the electrolysis process is respectively subjected to low-pressure electrolysis, normal-pressure electrolysis and medium-pressure electrolysis;
step seven: adjusting the flow rate of circulating cooling water in the alkali liquor cooler, controlling the temperature of the returned alkali liquor to control the working temperature of the electrolytic cell, so that the system can run safely, and outputting the separated hydrogen under the control of an adjusting valve and sending the hydrogen into a hydrogen storage tank;
step eight: and measuring the concentration of hydrogen in the hydrogen storage tank and the electric energy consumption condition of direct current.
Preferably, in the first step, the equipment required for the experiment comprises: the system comprises a water electrolysis tank, a separator, a cooler, a pressure regulating valve, an alkali liquor filter, an alkali liquor circulating pump, a raw water preparation device, an alkali liquor preparation and storage device, a hydrogen purification device, a hydrogen storage tank, a hydrogen compressor, a steam detection device, a direct current power supply, an automatic control device and the like, wherein the input voltage value of an external power supply system of the water electrolysis hydrogen production system is determined by a user, the voltage grade is preferably 10kV and 380V, and each water electrolysis tank of the water electrolysis hydrogen production system is independently provided with the direct current power supply.
Preferably, in the second step, the electric energy consumption of the unit hydrogen is less than or equal to 4.4 kW.h/m3The grade is good, and the electric energy consumption of unit hydrogen is less than or equal to 4.6 kW.h/m3The grade is first grade, and the electric energy consumption of unit hydrogen is less than or equal to 4.8 kW.h/m3The grade is two-stage (A), and the electric energy consumption of unit hydrogen is less than or equal to 5.0 kW.h/m3Then, the grade is two (B), as specified in the following table:
| grade | Unit hydrogen electric energy consumption/(kW.h/m)3) |
| Is excellent in | ≤4.4 |
| First stage | ≤4.6 |
| Second grade (A) | ≤4.8 |
| Second grade (B) | ≤5.0 |
Preferably, in step three, the water quality of the raw water for water electrolysis satisfies the following requirements: resistivity is more than or equal to 1.0 multiplied by 105Omega cm, the content of iron ions is less than 1.0mg/L, the content of chloride ions is less than 2.0mg/L, the content of suspended matters is less than 1.0mg/L, and the quality requirements of the electrolyte are as follows: concentration 27-32%, CO3 2-Content < 100mg/L, Fe2+、Fe3+The content is less than 3mg/L, CL-The content is less than 800mg/L, and the water quality of the circulating cooling water is required to be as follows: pH value of 6.5-8.0, chloride ion content of less than 200mg/L, sulfate ion content of less than 200mg/L, calcium ion content of less than 200mg/L, iron ion content of less than 1.0mg/L, ammonium ion content of less than 1.0mg/L, and dissolved silicic acid content of less than 50mg/L, as shown in the following table:
| name (R) | Index (I) |
| Resistivity of | ≥1.0×105 |
| Iron ion content | ＜1.0 |
| Chloride ion content | ＜2.0 |
| Suspended matter | ＜1.0 |
| Name (R) | |
| pH value | 6.5-8.0 |
| Chloride ion content | ＜200mg/L |
| Sulfate radical content | ＜200mg/L |
| Calcium ion content | ＜200mg/L |
| Iron ion content | ＜1.0mg/L |
| Ammonium ion content | ＜1.0mg/L |
| Content of dissolved silicic acid | ＜50mg/L |
Preferably, in the fourth step, the surface of the composite diaphragm is provided with a plurality of through holes, so that on one hand, the composite diaphragm is used for passing through generated hydrogen and oxygen, and on the other hand, the contact area between the electrolyte and the electrode material can be greatly increased, so that the real current density on the surface of the electrode can be effectively reduced in the industrial electrolysis process with higher current density, and further, the hydrogen evolution overpotential of the electrode in the electrolysis reaction process is greatly reduced.
Preferably, in the sixth step, the system working pressure rho of the low-pressure water electrolysis hydrogen production system is less than 0.1 MPa.
Preferably, in the sixth step, the system working pressure of the normal-pressure water electrolysis hydrogen production system is more than or equal to 0.1MPa and less than 1.6 MPa.
Preferably, in the sixth step, the system working pressure of the medium-pressure water electrolysis hydrogen production system is 1.6MPa or more and rho less than 10 MPa.
Preferably, in the seventh step, the working temperature environment is controlled to be 55 ℃.
EXAMPLE III
The utility model provides a reduce compound diaphragm of alkaline electrolysis water hydrogen manufacturing energy consumption, including water electrolysis tank 1 and compound diaphragm 3, 1 inside three electrodes 2 that are provided with of water electrolysis tank, the inside bottom of water electrolysis tank 1 is provided with compound diaphragm 3, the surface of compound diaphragm 3 is provided with a plurality of through-hole 4, the inside material of compound diaphragm 3 is provided with organic layer 5 and inorganic layer 6 respectively, compound diaphragm 3's raw and other materials include fluorocarbon and metal oxide granule, wherein, organic part adopts polytetrafluoroethylene, inorganic part adopts usually that chemical stability is good and metal oxide granules such as hydrophilic TiO2, ZrO2, Y2O 3.
A composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water comprises the following steps:
the method comprises the following steps: preparing equipment required by an experiment;
step two: making the direct current power consumption level of unit hydrogen production yield of the water electrolysis hydrogen production system equipment;
step three: preparing raw material water, electrolyte and circulating cooling water for hydrogen production by water electrolysis;
step four: three polar plates are vertically placed in the electrolytic cell in parallel, the whole electrolytic cell is divided into four electrolytic chambers, the three polar plates are connected in series, the bottom ends of the interiors of the four electrolytic chambers are provided with composite diaphragms, and the composite diaphragms are placed on the bottom end surfaces of the four electrolytic chambers in parallel in a corrugated manner;
step five: introducing raw material water prepared in the third step into a water electrolysis bath, then switching on direct current to a polar plate in the water electrolysis bath, decomposing the water in the water electrolysis bath into H2 and O2 under the action of the direct current, respectively entering a hydrogen and oxygen separation washer in a frame together with electrolyte, and then carrying out gas-liquid separation, washing and cooling;
step six: mixing the separated electrolyte with supplemented raw material water, and then feeding the mixture back to an electrolytic cell for circulation through an alkali liquor cooler, an alkali liquor circulating pump and a filter, and carrying out electrolysis, wherein the electrolysis process is respectively subjected to low-pressure electrolysis, normal-pressure electrolysis and medium-pressure electrolysis;
step seven: adjusting the flow rate of circulating cooling water in the alkali liquor cooler, controlling the temperature of the returned alkali liquor to control the working temperature of the electrolytic cell, so that the system can run safely, and outputting the separated hydrogen under the control of an adjusting valve and sending the hydrogen into a hydrogen storage tank;
step eight: and measuring the concentration of hydrogen in the hydrogen storage tank and the electric energy consumption condition of direct current.
Preferably, in the first step, the equipment required for the experiment comprises: the system comprises a water electrolysis tank, a separator, a cooler, a pressure regulating valve, an alkali liquor filter, an alkali liquor circulating pump, a raw water preparation device, an alkali liquor preparation and storage device, a hydrogen purification device, a hydrogen storage tank, a hydrogen compressor, a steam detection device, a direct current power supply, an automatic control device and the like, wherein the input voltage value of an external power supply system of the water electrolysis hydrogen production system is determined by a user, the voltage grade is preferably 10kV and 380V, and each water electrolysis tank of the water electrolysis hydrogen production system is independently provided with the direct current power supply.
Preferably, in the second step, the electric energy consumption of the unit hydrogen is less than or equal to 4.4 kW.h/m3The grade is good, and the electric energy consumption of unit hydrogen is less than or equal to 4.6 kW.h/m3The grade is first grade, and the electric energy consumption of unit hydrogen is less than or equal to 4.8 kW.h/m3The grade is two-stage (A), and the electric energy consumption of unit hydrogen is less than or equal to 5.0 kW.h/m3Then, the grade is two (B), as specified in the following table:
| grade | Unit hydrogen electric energy consumption/(kW.h/m)3) |
| Is excellent in | ≤4.4 |
| First stage | ≤4.6 |
| Second grade (A) | ≤4.8 |
| Second grade (B) | ≤5.0 |
Preferably, the first and second liquid crystal materials are,in the third step, the water quality of the raw material water for water electrolysis should satisfy the following regulations: resistivity is more than or equal to 1.0 multiplied by 105Omega cm, the content of iron ions is less than 1.0mg/L, the content of chloride ions is less than 2.0mg/L, the content of suspended matters is less than 1.0mg/L, and the quality requirements of the electrolyte are as follows: concentration 27-32%, CO3 2-Content < 100mg/L, Fe2+、Fe3+The content is less than 3mg/L, CL-The content is less than 800mg/L, and the water quality of the circulating cooling water is required to be as follows: pH value of 6.5-8.0, chloride ion content of less than 200mg/L, sulfate ion content of less than 200mg/L, calcium ion content of less than 200mg/L, iron ion content of less than 1.0mg/L, ammonium ion content of less than 1.0mg/L, and dissolved silicic acid content of less than 50mg/L, as shown in the following table:
| name (R) | Index (I) |
| Resistivity of | ≥1.0×105 |
| Iron ion content | ＜1.0 |
| Chloride ion content | ＜2.0 |
| Suspended matter | ＜1.0 |
| Name (R) | |
| pH value | 6.5-8.0 |
| Chloride ion content | ＜200mg/L |
| Sulfate radical content | ＜200mg/L |
| Calcium ion content | ＜200mg/L |
| Iron ion content | ＜1.0mg/L |
| Ammonium ion content | ＜1.0mg/L |
| Content of dissolved silicic acid | ＜50mg/L |
Preferably, in the fourth step, the surface of the composite diaphragm is provided with a plurality of through holes, so that on one hand, the composite diaphragm is used for passing through generated hydrogen and oxygen, and on the other hand, the contact area between the electrolyte and the electrode material can be greatly increased, so that the real current density on the surface of the electrode can be effectively reduced in the industrial electrolysis process with higher current density, and further, the hydrogen evolution overpotential of the electrode in the electrolysis reaction process is greatly reduced.
Preferably, in the sixth step, the system working pressure rho of the low-pressure water electrolysis hydrogen production system is less than 0.1 MPa.
Preferably, in the sixth step, the system working pressure of the normal-pressure water electrolysis hydrogen production system is more than or equal to 0.1MPa and less than 1.6 MPa.
Preferably, in the sixth step, the system working pressure of the medium-pressure water electrolysis hydrogen production system is 1.6MPa or more and rho less than 10 MPa.
Preferably, in the seventh step, the working temperature environment is controlled to be 60 ℃.
In summary, when the working temperature environment of the water electrolysis system is 45 ℃, the unit hydrogen electric energy consumption for hydrogen production by water electrolysis by adopting the composite diaphragm is the lowest, and the lowest hydrogen electric energy consumption is 4.4 kW.h/m3The energy consumption level is excellent.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and any insubstantial changes or modifications made within the spirit and scope of the main design of the present invention will solve the technical problems consistent with the present invention and shall be included in the scope of the present invention.
Claims (10)
1. The utility model provides a reduce compound diaphragm of alkaline electrolysis water hydrogen manufacturing energy consumption, includes water electrolysis trough (1) and compound diaphragm (3), its characterized in that, water electrolysis trough (1) inside is provided with three electrode (2), the inside bottom of water electrolysis trough (1) is provided with compound diaphragm (3), the surface of compound diaphragm (3) is provided with a plurality of through-hole (4), the inside material of compound diaphragm (3) is provided with organic layer (5) and inorganic layer (6) respectively, the raw and other materials of compound diaphragm (3) include fluorocarbon and metal oxide granule, and wherein, organic part adopts polytetrafluoroethylene, and inorganic part adopts the chemical stability usuallyQualitative and hydrophilic TiO2、ZrO2、Y2O3And the like.
2. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 1 is characterized by comprising the following steps:
the method comprises the following steps: preparing equipment required by an experiment;
step two: making the direct current power consumption level of unit hydrogen production yield of the water electrolysis hydrogen production system equipment;
step three: preparing raw material water, electrolyte and circulating cooling water for hydrogen production by water electrolysis;
step four: three polar plates are vertically placed in the electrolytic cell in parallel, the whole electrolytic cell is divided into four electrolytic chambers, the three polar plates are connected in series, the bottom ends of the interiors of the four electrolytic chambers are provided with composite diaphragms (3), and the composite diaphragms (3) are placed on the bottom end surfaces of the four electrolytic chambers in parallel in a folded mode;
step five: introducing the raw material water prepared in the third step into a water electrolysis tank (1), then switching on direct current to a polar plate in the water electrolysis tank (1), and decomposing the water in the water electrolysis tank (1) into H under the action of the direct current2And O2And respectively enters a hydrogen and oxygen separation washer in the frame together with the electrolyte, and then is subjected to gas-liquid separation, washing and cooling;
step six: mixing the separated electrolyte with supplemented raw material water, and then feeding the mixture back to an electrolytic cell for circulation through an alkali liquor cooler, an alkali liquor circulating pump and a filter, and carrying out electrolysis, wherein the electrolysis process is respectively subjected to low-pressure electrolysis, normal-pressure electrolysis and medium-pressure electrolysis;
step seven: adjusting the flow rate of circulating cooling water in the alkali liquor cooler, controlling the temperature of the returned alkali liquor to control the working temperature of the electrolytic cell, so that the system can run safely, and outputting the separated hydrogen under the control of an adjusting valve and sending the hydrogen into a hydrogen storage tank;
step eight: and measuring the concentration of hydrogen in the hydrogen storage tank and the electric energy consumption condition of direct current.
3. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the first step, the equipment required by the experiment comprises: the system comprises a water electrolysis cell (1), a separator, a cooler, a pressure regulating valve, an alkali liquor filter, an alkali liquor circulating pump, a raw water preparation device, an alkali liquor preparation and storage device, a hydrogen purification device, a hydrogen storage tank, a hydrogen compressor, a steam detection device, a direct current power supply, an automatic control device and the like, wherein the input voltage value of an external power supply system of the water electrolysis hydrogen production system is determined by a user, the voltage grade is preferably 10kV and 380V, and each water electrolysis cell (1) of the water electrolysis hydrogen production system is independently provided with the direct current power supply.
4. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the second step, the electric energy consumption of the unit hydrogen is less than or equal to 4.4 kW.h/m3The grade is good, and the electric energy consumption of unit hydrogen is less than or equal to 4.6 kW.h/m3The grade is first grade, and the electric energy consumption of unit hydrogen is less than or equal to 4.8 kW.h/m3The grade is two-stage (A), and the electric energy consumption of unit hydrogen is less than or equal to 5.0 kW.h/m3When the grade is two (B).
5. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the third step, the water quality of the raw material water for water electrolysis meets the following requirements: resistivity is more than or equal to 1.0 multiplied by 105Omega cm, the content of iron ions is less than 1.0mg/L, the content of chloride ions is less than 2.0mg/L, the content of suspended matters is less than 1.0mg/L, and the quality requirements of the electrolyte are as follows: concentration 27-32%, CO3 2-Content < 100mg/L, Fe2+、Fe3+The content is less than 3mg/L, CL-The content is less than 800mg/L, and the water quality of the circulating cooling water is required to be as follows: the PH value is 6.5-8.0, the content of chloride ions is less than 200mg/L, the content of sulfate radicals is less than 200mg/L, the content of calcium ions is less than 200mg/L, the content of iron ions is less than 1.0mg/L, the content of ammonium ions is less than 1.0mg/L, and the content of dissolved silicic acid is less than 50 mg/L.
6. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the fourth step, the surface of the composite diaphragm (3) is provided with a plurality of through holes (4), on one hand, the through holes are used for passing through generated hydrogen and oxygen, on the other hand, the contact area between the electrolyte and the electrode (2) material can be greatly increased, so that the real current density of the surface of the electrode (2) can be effectively reduced in the industrial electrolysis process with higher current density, and further, the hydrogen evolution overpotential of the electrode (2) in the electrolysis reaction process is greatly reduced.
7. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the sixth step, the system working pressure rho of the low-pressure water electrolysis hydrogen production system is less than 0.1 MPa.
8. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the sixth step, the system working pressure of the normal-pressure water electrolysis hydrogen production system is more than or equal to 0.1MPa and less than rho < 1.6 MPa.
9. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: in the sixth step, the system working pressure of the medium-pressure water electrolysis hydrogen production system is more than or equal to 1.6MPa and less than rho < 10 MPa.
10. The composite diaphragm for reducing the energy consumption of hydrogen production by alkaline electrolysis of water according to claim 2, characterized in that: and seventhly, controlling the working temperature environment to be 45-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254851.5A CN114086213A (en) | 2021-10-27 | 2021-10-27 | Composite diaphragm for reducing energy consumption of hydrogen production by alkaline electrolysis of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254851.5A CN114086213A (en) | 2021-10-27 | 2021-10-27 | Composite diaphragm for reducing energy consumption of hydrogen production by alkaline electrolysis of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114086213A true CN114086213A (en) | 2022-02-25 |
Family
ID=80297835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111254851.5A Pending CN114086213A (en) | 2021-10-27 | 2021-10-27 | Composite diaphragm for reducing energy consumption of hydrogen production by alkaline electrolysis of water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114086213A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110278177A1 (en) * | 2010-05-13 | 2011-11-17 | Ppg Industries Ohio, Inc. | Method of operating a diaphragm electrolytic cell |
| WO2016156317A1 (en) * | 2015-03-30 | 2016-10-06 | Industrie De Nora S.P.A. | Diaphragm-electrode assembly for use in alkaline water electrolysers |
| WO2018182006A1 (en) * | 2017-03-31 | 2018-10-04 | 旭化成株式会社 | Diaphragm, electrolytic bath, and method for producing hydrogen |
| WO2020158719A1 (en) * | 2019-01-30 | 2020-08-06 | 株式会社日本触媒 | Alkali water electrolysis diaphragm with electrode, method for producing same, and water electrolysis device |
| JP2021014619A (en) * | 2019-07-12 | 2021-02-12 | 株式会社日本触媒 | Alkaline water electrolysis diaphragm and production method thereof |
| CN214361730U (en) * | 2021-07-23 | 2021-10-08 | 北京水木汇德科技发展中心(有限合伙) | Water electrolysis hydrogen production device with diaphragm |
-
2021
- 2021-10-27 CN CN202111254851.5A patent/CN114086213A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110278177A1 (en) * | 2010-05-13 | 2011-11-17 | Ppg Industries Ohio, Inc. | Method of operating a diaphragm electrolytic cell |
| WO2016156317A1 (en) * | 2015-03-30 | 2016-10-06 | Industrie De Nora S.P.A. | Diaphragm-electrode assembly for use in alkaline water electrolysers |
| WO2018182006A1 (en) * | 2017-03-31 | 2018-10-04 | 旭化成株式会社 | Diaphragm, electrolytic bath, and method for producing hydrogen |
| WO2020158719A1 (en) * | 2019-01-30 | 2020-08-06 | 株式会社日本触媒 | Alkali water electrolysis diaphragm with electrode, method for producing same, and water electrolysis device |
| JP2021014619A (en) * | 2019-07-12 | 2021-02-12 | 株式会社日本触媒 | Alkaline water electrolysis diaphragm and production method thereof |
| CN214361730U (en) * | 2021-07-23 | 2021-10-08 | 北京水木汇德科技发展中心(有限合伙) | Water electrolysis hydrogen production device with diaphragm |
Non-Patent Citations (2)
| Title |
|---|
| 沈英静 等: ""碱性电解槽隔膜的研究进展"", 《化学工程师》 * |
| 王建江 等: ""碱性水电解用隔膜的现状及研究发展趋势"", 《高科技纤维与应用》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101306302B (en) | Hydrogen containing industrial waste gas separation and purification method | |
| CN101514462A (en) | Ultra-pure water membrane electrolyser | |
| CN102139938A (en) | Electro-Fenton reaction waste water treatment equipment | |
| CN214032715U (en) | Apparatus for producing hydrogen by electrolysis of water | |
| CN113913846A (en) | Water electrolysis hydrogen production oxygen generation reaction device | |
| CN114592207A (en) | Electrolytic hydrogen production system adapting to rapid wide power fluctuation and control method | |
| CN220099216U (en) | AEM electrolytic water hydrogen production integrated equipment | |
| CN114481158A (en) | High-temperature alkaline water electrolysis hydrogen production system and method | |
| CN109898092A (en) | A kind of half electrolytic water device of double reaction electrodes | |
| CN212025475U (en) | Movable water electrolysis hydrogen production hydrogenation device | |
| CN114086213A (en) | Composite diaphragm for reducing energy consumption of hydrogen production by alkaline electrolysis of water | |
| CN109680293A (en) | A kind of half electrolytic water device of single reaction electrode | |
| CN115404503A (en) | Micro-channel membraneless electrolytic hydrogen production device and preparation method thereof | |
| CN113890091A (en) | Method for solving building photovoltaic consumption problem by utilizing hydrogen storage system | |
| CN114059086A (en) | Device and method for two-step electrolytic hydrogen production based on acidic electrolyte | |
| CN110880607A (en) | Hydrogen-oxygen-hydrogen material, preparation method, electrolytic water catalytic material, fuel cell system and electric vehicle system | |
| CN111498980A (en) | Membrane pollution prevention MFC-AnMBR coupling device | |
| CN218203074U (en) | Hydrogen-oxygen mixed electrolytic tank | |
| CN114108015B (en) | Filter-pressing type membraneless water electrolytic tank | |
| CN2321786Y (en) | High-efficiency oxygen generator III | |
| CN212077162U (en) | Hydrogen and oxygen separation device | |
| CN219547111U (en) | Hydrogen peroxide generating device with modified cation exchange membrane | |
| CN218596531U (en) | Hydrogen production equipment using seawater as raw material | |
| CN112376067B (en) | Fuel cell-electrolytic cell series device for degrading ethanolamine and simultaneously producing hydrogen | |
| CN218539841U (en) | Modular PEM (proton exchange membrane) water electrolysis hydrogen production system |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220225 |