CN117187843A - Vertical barrel-shaped alkaline water electrolytic tank - Google Patents
Vertical barrel-shaped alkaline water electrolytic tank Download PDFInfo
- Publication number
- CN117187843A CN117187843A CN202311164530.5A CN202311164530A CN117187843A CN 117187843 A CN117187843 A CN 117187843A CN 202311164530 A CN202311164530 A CN 202311164530A CN 117187843 A CN117187843 A CN 117187843A
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- Prior art keywords
- plate
- bipolar
- polar
- polar plate
- alkaline water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 46
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 238000003475 lamination Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- -1 hydroxide ions Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The invention discloses a vertical barrel-shaped alkaline water electrolyzer, which comprises a cover plate, a bottom plate and a plurality of electrolysis units, wherein the cover plate and the bottom plate are arranged vertically and oppositely, the electrolysis units are annularly distributed between the cover plate and the bottom plate and are overlapped inside and outside, an annular outer layer polar plate and an annular inner layer polar plate are detachably arranged between the cover plate and the bottom plate, the inner layer polar plate is coaxially arranged at the center of the outer layer polar plate, a plurality of bipolar plates are coaxially arranged between the inner layer polar plate and the outer layer polar plate, the adjacent bipolar plates, the inner layer polar plate, the adjacent bipolar plates and the two adjacent bipolar plates form an electrolysis unit, two electrode plates are coaxially arranged in the middle of each electrolysis unit and the bipolar plates, the electrode plates can be clamped on the side walls of the bipolar plates at the corresponding sides, the two electrode plates in the same electrolysis unit are separated through a diaphragm, a circulating water pipeline is arranged on the bottom plate, and an air pipeline is arranged on the cover plate.
Description
Technical Field
The invention relates to the technical field of water electrolysis hydrogen production equipment, in particular to a vertical barrel-shaped alkaline water electrolysis tank.
Background
The main technical routes of water electrolysis hydrogen production (green hydrogen) are three technical routes of alkaline electrolysis, proton Exchange Membrane (PEM) electrolysis and Solid Oxide (SOEC) electrolysis. The alkaline water electrolysis hydrogen production technology at the present stage is the hydrogen production technology by water electrolysis with low cost, the most mature technology and the highest industrialization degree. The core of the alkaline water electrolysis hydrogen production technology is an electrolytic tank, and the alkaline water electrolysis hydrogen production electrolytic tank consists of a polar plate, an electrolyte, an electrode, a catalyst, a diaphragm and the like. The electrolyte of the alkaline electrolysis water is a KOH or NaOH solution with the mass percent (wt%) of 30 percent. In the electrolysis state, the cathode water gets electrons to generate hydrogen and hydroxide ions, the hydroxide ions pass through the diaphragm, and the anode hydroxide loses electrons to generate oxygen.
However, the traditional alkaline electrolytic cell has the defects of large volume, inconvenient disassembly and the like, so that the manufacturing and maintenance cost of the electrolytic cell is relatively high, and the hydrogen production efficiency by water electrolysis is low.
Disclosure of Invention
Therefore, the invention provides a vertical barrel-shaped alkaline water electrolytic bath to solve the defects in the prior art.
The utility model provides a vertical barrel-shaped alkaline water electrolyzer, is including upper and lower just to apron and the bottom plate that sets up and a plurality of annular distribution are in electrolysis unit between apron and the bottom plate, a plurality of inside and outside stack in proper order of electrolysis unit is set up, lock through locking mechanism between apron and the bottom plate, the detachable outer polar plate that is annular distribution and the inlayer polar plate that is columnar distribution of installing between apron and the bottom plate, inlayer polar plate coaxial arrangement is in the central part of outer polar plate to be provided with a plurality of bipolar plates between inlayer polar plate and the outer polar plate, outer polar plate and adjacent bipolar plate and two adjacent constitute between bipolar plate electrolysis unit, every electrolysis unit's middle part with bipolar plate coaxial arrangement has two electrode plates, the electrode plate can be blocked and establish in the bipolar plate lateral wall of corresponding side, two inside the same electrolysis unit pass through the diaphragm and separate, be provided with circulating water pipe on the bottom plate, a plurality of water gaps of circulating water pipe correspond respectively electrolysis unit, be provided with the gas pipeline on the apron, be connected with on the gas pipeline and export and the hydrogen gas port correspond the electrolysis unit respectively.
Preferably, the locking cabinet comprises a plurality of screws vertically arranged on the bottom plate, a plurality of guide holes for sliding and sleeving the screws are formed in the cover plate, and the screws are locked with the cover plate through nuts.
Preferably, the opposite surfaces of the cover plate and the bottom plate are respectively provided with a positioning ring groove for positioning and clamping the inner-layer polar plate, the outer-layer polar plate and a plurality of bipolar plates.
Preferably, the bipolar plate comprises a cathode plate surface and an anode plate surface which are positioned on the inner side and the outer side, a circle of protruding edges are arranged on the two sides of the bipolar plate in an annular array, grooves are formed between the adjacent protruding edges, and the inner side of the outer layer polar plate and the outer side of the inner layer polar plate respectively adopt the same structure with the inner side and the outer side of the bipolar plate.
Preferably, the electrode plate is a wave-shaped columnar plate net, the width of each wave radian of the electrode plate is equal to the width of the groove, and the wave arc of the electrode plate is clamped in the corresponding groove.
Preferably, the separator is any one of a polyether-type separator, a polysulfone-type separator, a PTFE separator, a PPS separator, an ES separator, and a ceramic-type separator.
Preferably, both ends of the inner polar plate, the outer polar plate and the plurality of bipolar plates are respectively provided with sealing gaskets matched with the cover plate and the bottom plate at the corresponding ends.
Preferably, the electrode plate is made of metal or alloy stable under alkaline condition, and is any one or combination of several of nickel, stainless steel, nickel-plated carbon steel or titanium.
The invention has the following advantages:
the vertical modularized barrel-shaped alkaline electrolytic tank with the fixed flow passage and convenient assembly and disassembly can reduce the manufacturing cost of the electrolytic tank and improve the hydrogen production efficiency by water electrolysis to a certain extent.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the surface of the base plate according to the present invention;
FIG. 4 is a schematic view of the structure of the bottom surface of the cover plate of the present invention;
FIG. 5 is a schematic cross-sectional view of several electrolytic cells according to the present invention;
FIG. 6 is an enlarged schematic view of the portion A of FIG. 5 according to the present invention;
FIG. 7 is a schematic diagram of the distribution structure of the inner and outer plates and bipolar plates of the present invention;
fig. 8 is a schematic structural view of an electrode plate according to the present invention.
In the figure:
1-a cover plate; 2-a bottom plate; 3-an inner layer polar plate; 4-an outer layer polar plate; 5-a gasket; 6-bipolar plates; 7-electrode plates; 8-a membrane; 9-grooves; 10-an electrolysis unit; 11-screw; 12-nut; 13-a circulating water pipe; 14-nozzle; 15-gas pipeline; 16-oxygen outlet; 17-hydrogen outlet; 18-gas ports; 19-positioning ring groove.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 8, the invention provides a vertical barrel-shaped alkaline water electrolytic tank, which comprises a cover plate 1, a bottom plate 2 and a plurality of electrolysis units 10, wherein the cover plate 1 and the bottom plate 2 are arranged vertically opposite to each other, the electrolysis units 10 are annularly distributed between the cover plate 1 and the bottom plate 2, the electrolysis units 10 are sequentially stacked inside and outside, and the cover plate 1 and the bottom plate 2 are locked through a locking mechanism. Specific:
the locking cabinet comprises a plurality of screw rods 11 vertically arranged on the bottom plate 2, a plurality of guide holes for sliding sleeving the screw rods 11 are formed in the cover plate 1, and the screw rods 11 are locked with the cover plate 1 through nuts 12.
Compared with the traditional cylindrical alkaline electrolytic tank, the electrolytic tank is more stable, and the cover plate 1 and the bottom plate 2 are convenient to detach and replace.
An outer layer polar plate 4 in annular distribution and an inner layer polar plate 3 in columnar distribution are detachably arranged between the cover plate 1 and the bottom plate 2, the inner layer polar plate 3 is coaxially arranged at the center of the outer layer polar plate 4, and a plurality of bipolar plates 6 are coaxially arranged between the inner layer polar plate 3 and the outer layer polar plate 4.
The opposite surfaces of the cover plate 1 and the bottom plate 2 are respectively provided with a positioning ring groove 19 for positioning and clamping the inner-layer polar plate 3, the outer-layer polar plate 4 and the bipolar plates 6, and the positioning ring grooves 19 can realize quick detachable installation of the inner-layer polar plate 3, the outer-layer polar plate 4 and the bipolar plates 6.
The two ends of the inner polar plate 3, the outer polar plate 4 and the bipolar plates 6 are respectively provided with a sealing gasket 5 matched with the cover plate 1 and the bottom plate 2 at the corresponding ends, and the sealing gaskets 5 used in the invention are round.
The outer electrode plate 4, the adjacent bipolar plates 6, the inner electrode plate 3, the adjacent bipolar plates 6 and the two adjacent bipolar plates 6 form an electrolysis unit 10, two electrode plates 7 are coaxially arranged in the middle of each electrolysis unit 10 and the bipolar plates 6, the two electrode plates 7 in one electrolysis unit 10 are respectively an anode panel and a cathode panel, and the anode panel and the cathode panel are the root for determining the hydrogen production efficiency of the alkaline hydrogen production electrolysis tank.
The electrode plates 7 can be clamped on the side walls of the bipolar plates 6 on the corresponding sides. Specific:
the bipolar plate 6 includes a cathode plate surface and an anode plate surface on the inner and outer surfaces, the cathode plate surface corresponds to the anode plate, and the anode plate surface corresponds to the cathode plate.
The bipolar plate 6 is used for separating the inner space of the alkaline water hydrogen production electrolytic tank to form a plurality of electrolytic cell chambers. The bipolar plate 6 is provided with a circle of raised edges on the annular arrays on both sides, and the structure not only provides corresponding flow channels for water flowing in the electrolysis process, but also enhances the overall supporting capacity of the polar plate.
Grooves 9 are formed between adjacent convex edges, and the inner side of the outer layer polar plate 4 and the outer side of the inner layer polar plate 3 respectively adopt the same structure with the inner side and the outer side of the bipolar plate 6.
The electrode plate 7 is made of metal or alloy stable under alkaline condition, and is any one or combination of a plurality of nickel, stainless steel, nickel-plated carbon steel or titanium. The electrode plate 7 is a wave-shaped columnar plate net, the width of each wave radian of the electrode plate 7 is equal to the width of the groove 9, and the wave radian of the electrode plate 7 is clamped in the corresponding groove 9.
The structure increases the supporting capacity of the electrode plate, does not need to add an additional electrode supporting net, reduces contact resistance, increases the surface area of the electrode and provides more reaction sites for electrolysis.
Two of said electrode plates 7 inside the same electrolysis cell 10 are separated by a membrane 8. The membrane 8 is used for separating hydrogen and oxygen generated by water electrolysis and can rapidly permeate OH-ions, H2O and H+ ions, and in the invention, the membrane 8 is a commercial composite membrane with alkali corrosion resistance, small aperture and large porosity. Such as polyether type membranes, polysulfone type membranes, PTFE membranes, PPS membranes, ES membranes, and ceramic type membranes. Ensures the purity of hydrogen and oxygen and reduces the electrolysis energy consumption.
The electrolysis unit is characterized in that a circulating water pipeline 13 is arranged on the bottom plate 2, a plurality of water ports 14 of the circulating water pipeline 13 respectively correspond to the electrolysis unit 10, a gas pipeline 15 is arranged on the cover plate 1, an oxygen outlet 16 and a hydrogen outlet 17 are connected to the gas pipeline 15, and gas ports 18 of the gas pipeline 15 respectively correspond to the electrolysis unit 10.
The invention makes corresponding innovative changes from the external shape to the internal structure of the electrolytic bath, and is a novel alkaline water electrolysis hydrogen production electrolytic bath.
The vertical modularized barrel-shaped alkaline electrolytic tank with the fixed flow passage and convenient assembly and disassembly can reduce the manufacturing cost of the electrolytic tank and improve the hydrogen production efficiency by water electrolysis to a certain extent.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. A vertical barrel alkaline water electrolyzer, characterized in that: including upper and lower just being in apron (1) and bottom plate (2) and a plurality of annular distribution that set up apron (1) and bottom plate (2) are electrolytic cell (10) between a plurality of electrolytic cell (10) are inside and outside the lamination setting in proper order, lock through locking mechanism between apron (1) and bottom plate (2), the detachable outer polar plate (4) that are annular distribution and the inlayer polar plate (3) that are columnar distribution of installing between apron (1) and bottom plate (2), inlayer polar plate (3) coaxial set up in the central part of outer polar plate (4) to be provided with a plurality of bipolar plate (6) between inlayer polar plate (3) and outer polar plate (4), outer polar plate (4) and adjacent bipolar plate (6), inner polar plate (3) and adjacent bipolar plate (6) between constitute electrolytic cell (10), the middle part of every electrolytic cell (10) with be provided with two (7) coaxial, cassette (7) are established in the central part of outer polar plate (4) to be provided with bipolar plate (6) respectively between bipolar plate (6) and bipolar plate (6) adjacent bipolar plate (6) and bipolar plate (6) are adjacent bipolar plate (6) respectively have the diaphragm (8) that can be passed through in the same side of the water piping (8), a plurality of water gaps (14) of the circulating water pipeline (13) respectively correspond to the electrolysis unit (10), a gas pipeline (15) is arranged on the cover plate (1), an oxygen outlet (16) and a hydrogen outlet (17) are connected to the gas pipeline (15), and air ports (18) of the gas pipeline (15) respectively correspond to the electrolysis unit (10).
2. A vertical bucket alkaline water electrolyzer as claimed in claim 1 characterized in that: the locking cabinet comprises a plurality of screws (11) vertically arranged on the bottom plate (2), a plurality of guide holes for sliding sleeving the screws (11) are formed in the cover plate (1), and the screws (11) are locked with the cover plate (1) through nuts (12).
3. A vertical bucket alkaline water electrolyzer as claimed in claim 1 characterized in that: the opposite surfaces of the cover plate (1) and the bottom plate (2) are respectively provided with a positioning ring groove (19) for positioning and clamping the inner-layer polar plates (3), the outer-layer polar plates (4) and the bipolar plates (6).
4. A vertical bucket alkaline water electrolyzer as claimed in claim 1 characterized in that: the bipolar plate (6) comprises a cathode plate surface and an anode plate surface which are positioned on the inner side and the outer side, a circle of protruding edges are arranged on the two sides of the bipolar plate (6) in an annular array, grooves (9) are formed between the adjacent protruding edges, and the inner side of the outer-layer polar plate (4) and the outer side of the inner-layer polar plate (3) respectively adopt the same structure with the inner side and the outer side of the bipolar plate (6).
5. A vertical bucket alkaline water electrolyzer as defined in claim 4 characterized in that: the electrode plate (7) is a wavy columnar plate net, the width of each wavy radian of the electrode plate (7) is equal to the width of the groove (9), and the wavy arc of the electrode plate (7) is clamped in the corresponding groove (9).
6. A vertical bucket alkaline water electrolyzer as claimed in claim 1 characterized in that: the membrane (8) is any one of a polyether membrane, a polysulfone membrane, a PTFE membrane, a PPS membrane, an ES membrane and a ceramic membrane.
7. A vertical bucket alkaline water electrolyzer as claimed in claim 1 characterized in that: both ends of the inner polar plate (3), the outer polar plate (4) and the bipolar plates (6) are respectively provided with a sealing gasket (5) matched with the cover plate (1) and the bottom plate (2) at the corresponding ends.
8. A vertical bucket alkaline water electrolyzer as claimed in claim 1 characterized in that: the electrode plate (7) is made of metal or alloy which is stable under alkaline conditions, and is any one or combination of a plurality of nickel, stainless steel, nickel-plated carbon steel or titanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311164530.5A CN117187843A (en) | 2023-09-11 | 2023-09-11 | Vertical barrel-shaped alkaline water electrolytic tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311164530.5A CN117187843A (en) | 2023-09-11 | 2023-09-11 | Vertical barrel-shaped alkaline water electrolytic tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117187843A true CN117187843A (en) | 2023-12-08 |
Family
ID=88995604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311164530.5A Pending CN117187843A (en) | 2023-09-11 | 2023-09-11 | Vertical barrel-shaped alkaline water electrolytic tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117187843A (en) |
-
2023
- 2023-09-11 CN CN202311164530.5A patent/CN117187843A/en active Pending
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