CN217983425U - A pile structure for high-efficient electro-catalysis production neutral hydrogen peroxide solution - Google Patents
A pile structure for high-efficient electro-catalysis production neutral hydrogen peroxide solution Download PDFInfo
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- CN217983425U CN217983425U CN202222126318.7U CN202222126318U CN217983425U CN 217983425 U CN217983425 U CN 217983425U CN 202222126318 U CN202222126318 U CN 202222126318U CN 217983425 U CN217983425 U CN 217983425U
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- hydrogen peroxide
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 230000007935 neutral effect Effects 0.000 title claims abstract description 23
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 239000010405 anode material Substances 0.000 claims abstract description 8
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 239000003014 ion exchange membrane Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000010406 cathode material Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 230000002572 peristaltic effect Effects 0.000 claims description 5
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000003575 carbonaceous material Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 150000001721 carbon Chemical class 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000006056 electrooxidation reaction Methods 0.000 abstract 1
- QOSATHPSBFQAML-UHFFFAOYSA-N hydrogen peroxide;hydrate Chemical compound O.OO QOSATHPSBFQAML-UHFFFAOYSA-N 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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Abstract
The utility model discloses a galvanic pile structure for producing neutral hydrogen peroxide by high-efficiency electro-catalysis, which is connected by a cathode end plate, a cathode insulating plate, a cathode current collector, a cathode plate, a cathode material, an ion exchange membrane, an anode plate, an anode material, an anode current collector, an anode insulating plate, an anode end plate and a condensation separator, wherein the middle part of the galvanic pile structure is sealed by a sealing washer, a limiting rod and a bolt component; a plurality of corresponding anode and cathode end plates and insulating plates are arrangedThe limiting holes are at least distributed on the adjacent long edges and narrow edges of the cathode end plate and the anode end plate, and the number of each edge is at least two; the utility model uses fuel cell mode to operate the electric pile, H 2 Electrooxidation at the anode produces protons and electrons that are transported through a Proton Exchange Membrane (PEM) to the cathode where they react with oxygen to form H 2 O 2 And then neutral hydrogen peroxide water product is obtained through condensation and separation. The utility model discloses the galvanic pile simple structure, the running cost is low.
Description
Technical Field
The utility model relates to a fuel cell field, concretely relates to high-efficient electro-catalysis produces pile structure of neutral hydrogen peroxide solution.
Background
Hydrogen peroxide (H) 2 O 2 ) Is a product with chemical value, and draws wide attention in the fields of energy technology, bioengineering, environmental remediation and the like. In particular, H is due to its low by-product, low oxidation potential and peroxide nature 2 O 2 Are widely used as oxidants, bleaches and disinfectants to solve environmental problems. Therefore, there is a need for efficient, low cost H 2 O 2 A synthetic method. The anthraquinone process is currently producing H 2 O 2 In the process, the auxiliary equipment has large energy consumption and high price, and H is 2 O 2 Is indirectly generated, and is difficult to be directly and economically applied to the fields of water treatment and the like. And electrochemical synthesis produces H in situ 2 O 2 Another approach is provided. The reaction mechanism is mainly that oxygen at the cathode passes through double electrons (2 e) - ) Reduction of the pathway to H 2 O 2 The reaction may occur in acidic, neutral or alkaline electrolytes, and because it promotes its decomposition at higher pH and pure hydrogen peroxide is more widely needed and applied, H is produced in a neutral environment of the design 2 O 2 The electric pile of (2) is very promising.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a pile structure for producing neutral hydrogen peroxide by high-efficiency electro-catalysis, which solves the problems of large energy consumption and high price of the production auxiliary equipment of pure hydrogen peroxide in the prior art.
The utility model adopts the technical scheme as follows:
a fuel cell stack for producing neutral hydrogen peroxide by high-efficiency electrocatalysis is connected by a cathode end plate, a cathode insulating plate, a cathode current collector, a cathode plate, a cathode material, an ion exchange membrane, an anode plate, an anode material, an anode current collector, an anode insulating plate, an anode end plate and a condensation separator, wherein the middle part of the stack is sealed by a sealing washer, a limiting rod, a bolt assembly and the like; a plurality of limiting holes are correspondingly arranged on the cathode and anode end plates and the insulating plate, the limiting holes are at least distributed on the adjacent long edges and narrow edges of the cathode end plate and the anode end plate, and the number of each edge is at least two; a plurality of limiting grooves corresponding to the limiting holes are arranged on the collector plate, the cathode plate, the anode plate and the ion exchange membrane; the limiting rod is matched with the limiting hole and the limiting groove to realize electric pile assembling and positioning, and the bolt assembly compresses the assembled electric pile.
The limiting rod of the galvanic pile for producing the neutral hydrogen peroxide by electrocatalysis is a cylinder, and the limiting groove is a semicircular groove matched with the limiting rod.
The cathode and anode end plates of the pile for producing the neutral hydrogen peroxide by electrocatalysis are correspondingly provided with a hydrogen inlet and a hydrogen outlet, an oxygen inlet and an oxygen outlet, an electrolyte inlet and an electrolyte outlet; the water-carrying feed of the cathode is controlled by a peristaltic pump, the generated hydrogen peroxide enters a condensation separator for separation, the product aqueous hydrogen peroxide is collected, and the oxygen can be recycled after separation; hydrogen generated by the anode enters the cathode tank for recycling.
The galvanic pile for producing neutral hydrogen peroxide by electrocatalysis is mainly based on the following electrode reactions: cathode O 2 +2H + +2e － →H 2 O 2 Anode: h 2 →2H + +2e － And (3) total reaction: h 2 +O 2 →H 2 O 2 。
The pile of neutral hydrogen peroxide solution of electro-catalysis production, its circulation module includes liquid storage bucket, cathode tank, anode tank, peristaltic pump, gear pump, solenoid valve, level sensor, sample collection box. Oxygen and a dilute sulfuric acid solution are introduced into the cathode of the pile, hydrogen and the dilute sulfuric acid solution are introduced into the anode, and the dilute sulfuric acid solution is recycled in the cathode tank and the anode tank.
In the galvanic pile for producing neutral hydrogen peroxide by electrocatalysis, a gas diffusion cathode (IGDE) with an improved preparation process of a cathode consists of a conductive catalyst layer (carbon black) and a titanium mesh subjected to hydrophobic treatment by using PTFE (polytetrafluoroethylene). Unlike a conventional GDE including a gas diffusion layer and a catalyst layer, IGDE serves as both the gas diffusion layer and the catalyst layer. The anode material may use a transition metal oxide or a metal-modified carbon material.
Has the advantages that: the utility model discloses the galvanic pile successfully separates on the negative pole and obtains neutral hydrogen peroxide solution product, and the successful stable test operation of galvanic pile, the utility model discloses galvanic pile simple structure, the running cost is low.
Drawings
FIG. 1 is an overall structural diagram of the galvanic pile for producing neutral hydrogen peroxide by electrocatalysis;
FIG. 2 is a front view of the galvanic stack for the electrocatalytic production of neutral hydrogen peroxide;
FIG. 3 is a right side view of the galvanic pile for producing neutral hydrogen peroxide by electrocatalysis;
FIG. 4 is a top view of the stack for the electro-catalytic production of neutral hydrogen peroxide;
FIG. 5 is a schematic diagram of the process of the galvanic pile for producing neutral hydrogen peroxide by electrocatalysis;
FIG. 6 is a schematic structural diagram of the cathode and anode plates for producing neutral hydrogen peroxide by electrocatalysis;
in the figure: 1-a liquid distributor; 2-hydrogen inlet; 3-oxygen inlet; 4, a rotating shaft; 5-a liquid discharge port; 6-cathode liquid inlet; 7-cathode drain outlet; 8-anode liquid inlet; 9-anode drain outlet; 10-a bolt assembly; 11-cathode end plate; 12-cathode insulating board; 13-a cathode current collector; 14-a cathode plate; 15-a cathode material; 16-ion exchange membrane; 17-anode material; 18-an anode plate; 19-anode current collector; 20-anode insulating board; 21-anode end plate; 22-a sealing gasket; 23-a limiting rod; 24-hydrogen; 25-cathode can; 26-a pump; 27-anode can; 28-oxygen; 29-condensation separator; 30-electric pile; 31-a limiting hole; 32-limiting groove.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 3-6, the fuel cell stack for producing neutral hydrogen peroxide by high-efficiency electrocatalysis is connected by a cathode end plate 11, a cathode insulating plate 12, a cathode current collector 13, a cathode plate 14, a cathode material 15, an ion exchange membrane 16, an anode plate 18, an anode material 17, an anode current collector 19, an anode insulating plate 20, an anode end plate 21, a condensation separator 29, and a sealing washer 22, a limiting rod 23, a bolt assembly 10 and the like which are used for sealing the stack structure; a plurality of limiting holes are correspondingly arranged on the cathode end plate 11, the anode end plate 21 and the cathode-anode insulating plate, the limiting holes are at least distributed on the adjacent long sides and narrow sides of the cathode end plate 11 and the anode end plate 21, and the number of each side is at least two; a plurality of limiting grooves corresponding to the limiting holes are arranged on the collector plate, the anode plate and the cathode plate and on the ion exchange membrane 16; the limiting rod 23 is matched with the limiting hole 31 and the limiting groove 32 to realize electric pile assembling and positioning, and the bolt assembly 10 compresses the assembled electric pile. The limiting rod 23 is a cylinder, and the limiting groove is a semicircular groove matched with the limiting rod.
As shown in fig. 1-2, a hydrogen inlet 2 and a hydrogen outlet, an oxygen inlet 3 and an oxygen outlet, a cathode liquid inlet 6, a cathode liquid outlet 7, an anode liquid inlet 8, and an anode liquid outlet 9 are correspondingly arranged at the cathode and anode end plates; the water-carrying feeding of the cathode is controlled by a peristaltic pump 26, the generated hydrogen peroxide enters a condensation separator 29 for separation, the product aqueous hydrogen peroxide is collected, and the oxygen can be recycled after separation; the hydrogen generated by the anode enters the cathode tank 25 for recycling.
Example 1: and (5) testing the voltage stability of the galvanic pile in the galvanic pile testing process.
PTEF carbon paper material loaded with carbon material BP2000 and carbon paper material loaded with platinum are respectively used as cathode and anode materials of the galvanic pile, and O is adopted as the cathode 2 And dilute sulfuric acid system, anode adopts H 2 And dilute sulfuric acid system liquid.
The battery operation conditions are as follows: the operating pressure of the cathode gas and the anode gas is 0.1MPa; the oxygen and hydrogen gas flow rates were 76mL/min and 64mL/min, respectively (stoichiometric ratio 1.2: 1); the cathode and anode electrolyte is deionized water, and the electrolyte is circularly introduced into the cathode and anode chamber at the flow rate of 10mL/min by adopting a peristaltic pump; the cell operating temperature was room temperature.
The generation amount of hydrogen peroxide under different electrolysis conditions is determined by a direct titration method of 0.04mol/L potassium permanganate solution, and the specific reaction principle is as follows: 2KMnO 4 +3H 2 SO 4 +5H 2 O 2 →K 2 SO 4 +2MnSO 4 +5O 2 +8H 2 O。
Oxygen introduced into the cathode is reduced to generate a product H 2 O 2 Product H 2 O 2 Discharged from the anode outlet of the cathode end plate and collected to detect H 2 O 2 The concentration of hydrogen peroxide in the solution is 2mol/L, and the galvanic pile is stabilized to operate stably for one month under a certain voltage.
Claims (5)
1. A pile structure for high-efficient electro-catalysis production neutral hydrogen peroxide is characterized in that: the galvanic pile is connected by a cathode end plate, a cathode insulating plate, a cathode current collector, a cathode plate, a cathode material, an ion exchange membrane, an anode plate, an anode material, an anode current collector, an anode insulating plate, an anode end plate and a condensation separator in sequence, wherein the middle of the galvanic pile is sealed by a sealing washer, a limiting rod and a bolt assembly; the cathode and anode end plate and the insulating plate are correspondingly provided with a plurality of limiting holes, the limiting holes are at least distributed on the adjacent long edges and narrow edges of the cathode end plate and the anode end plate, and the number of each edge is at least two; a plurality of limiting grooves corresponding to the limiting holes are arranged on the current collecting plate, the anode plate and the cathode plate and the ion exchange membrane; the limiting rod is matched with the limiting hole and the limiting groove to realize electric pile assembling and positioning, and the bolt assembly compresses the assembled electric pile.
2. The stack structure of claim 1, wherein the limiting rod is a cylinder, and the limiting groove is a semicircular groove adapted to the limiting rod.
3. The stack structure according to claim 1, wherein the cathode and anode end plates are correspondingly provided with a hydrogen inlet and a hydrogen outlet, an oxygen inlet and an oxygen outlet, an electrolyte inlet and an electrolyte outlet; the water-carrying feed of the cathode is controlled by a peristaltic pump, the generated hydrogen peroxide enters a condensation separator for separation, the product aqueous hydrogen peroxide is collected, and the oxygen can be recycled after separation; hydrogen generated by the anode enters the cathode tank for recycling.
4. The stack structure according to claim 1, characterized in that: oxygen and a dilute sulfuric acid solution are introduced into the cathode of the pile, hydrogen and the dilute sulfuric acid solution are introduced into the anode, and the dilute sulfuric acid solution is recycled in the cathode tank and the anode tank.
5. The stack structure of claim 1, wherein: the IGDE consists of a conductive catalyst layer and a titanium mesh subjected to hydrophobic treatment by using PTFE; IGDE acts as both a gas diffusion layer and a catalyst layer; the anode material uses a transition metal oxide or a metal-modified carbon material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222126318.7U CN217983425U (en) | 2022-08-12 | 2022-08-12 | A pile structure for high-efficient electro-catalysis production neutral hydrogen peroxide solution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222126318.7U CN217983425U (en) | 2022-08-12 | 2022-08-12 | A pile structure for high-efficient electro-catalysis production neutral hydrogen peroxide solution |
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| CN217983425U true CN217983425U (en) | 2022-12-06 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240218 Address after: No. 555 Changjiang Road, Baoshan District, Shanghai, 200436 Patentee after: Shanghai orange oxygen Technology Co.,Ltd. Country or region after: China Patentee after: Shaoxing orange oxygen Technology Co.,Ltd. Address before: No. 555, Changjiang Road, Baoshan District, Shanghai, 201900 Patentee before: Shanghai orange oxygen Technology Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |