CN219621273U - Device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid - Google Patents
Device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid Download PDFInfo
- Publication number
- CN219621273U CN219621273U CN202320352381.4U CN202320352381U CN219621273U CN 219621273 U CN219621273 U CN 219621273U CN 202320352381 U CN202320352381 U CN 202320352381U CN 219621273 U CN219621273 U CN 219621273U
- Authority
- CN
- China
- Prior art keywords
- anode
- end plate
- cathode
- reactor
- furandicarboxylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a device for producing hydrogen by coupling of high-concentration 2, 5-furandicarboxylic acid by electrosynthesis, which comprises a batch feeding mechanism and a reactor mechanism, wherein the batch feeding mechanism and the reactor mechanism are communicated through a pipeline and a pump, the batch feeding mechanism comprises an electrolyte storage tank and a substrate storage tank, and the electrolyte storage tank is communicated with a single pipeline of the reactor mechanism; the substrate storage tank is communicated with the reactor mechanism through a plurality of pipelines; the reactor mechanism comprises a plurality of reactor monomers connected in series, wherein each reactor monomer comprises an anode end plate, a cathode end plate, a membrane electrode and a gas diffusion layer, wherein the membrane electrode and the gas diffusion layer are arranged between the anode end plate and the cathode end plate; sealing gaskets are arranged between the anode end plate and the membrane electrode and between the cathode end plate and the gas diffusion layer. The utility model reduces the side reaction rate of high-concentration 5-hydroxymethylfurfural in alkali solution by a batch feeding mode, improves the ratio of the electrode area to the volume of electrolyte by the design of a reactor monomer, further reduces the ratio of side reaction, and provides possibility for industrialization of coupling hydrogen production of the electrosynthesis of 2, 5-furandicarboxylic acid.
Description
Technical Field
The utility model belongs to the field of electrocatalytic oxidation of biomass derivatives, and particularly relates to a device for electrocatalytic oxidation of biomass derivatives.
Background
The development of the modern industry is severely dependent on limited fossil resources. In order to address the urgent resource crisis and achieve the goal of sustainable development, one potential solution is to develop renewable raw materials that replace fossil resources. Biomass is rich in content and wide in source, is an important renewable resource, and development and utilization of the biomass gradually enter the field of vision of people. Wherein, lignocellulose can be used for preparing saccharide compounds and further converting the saccharide compounds into 5-hydroxymethyl furfural. The 2, 5-furandicarboxylic acid is a high added value product obtained by selective oxidation of 5-hydroxymethylfurfural, and can be used as a plastic product with excellent monomer synthesis performance, such as polyethylene 2, 5-furandicarboxylic acid glycol ester. Compared with polyethylene terephthalate synthesized by taking petrochemical resources as raw materials, the polyethylene 2, 5-furandicarboxylate has the advantages of good gas barrier property, renewable raw materials and the like, and meets the requirements of environmental protection and sustainability.
In various synthesis methods, the electrocatalytic reaction has the advantages of mild reaction conditions (normal temperature and normal pressure) and hydrogen as a byproduct. Thus, the preparation of 2, 5-furandicarboxylic acid by electrocatalytic oxidation of 5-hydroxymethylfurfural has been widely studied in recent years. Patent (CN 114703495A, 2020) discloses a process for preparing 2, 5-furandicarboxylic acid by electrocatalytically oxidizing 5-hydroxymethylfurfural over an amorphous NiFeB catalyst, which process uses 10 mmol L -1 Electrocatalytic oxidation of 5-hydroxymethylfurfural to give 7.15 mmol L -1 2, 5-furandicarboxylic acid of (2), the selectivity was about 72%. Patent (CN 109837555B, 2019) discloses a method for preparing 2, 5-furandicarboxylic acid by electrocatalytic oxidation of nickel vanadium phosphide catalyst, using 50 mmol L -1 Electrocatalytic oxidation of 5-hydroxymethylfurfural to yield 47.53 mmol L -1 2, 5-furandicarboxylic acid of (a). Patent (CN 111472020B, 2019) discloses a method for preparing 2, 5-furandicarboxylic acid by electrocatalytically oxidizing 5-hydroxymethylfurfural by using a hydrotalcite-based layered catalyst, which uses 50 mmol L -1 Electrocatalytic oxidation of 5-hydroxymethylfurfural to give 40.45 mmol L -1 2, 5-furandicarboxylic acid of (a). The university of Utah state Sun Yujie professor reported a Ni 3 S 2 Electrocatalyst for preparing 2, 5-furandicarboxylic acid by oxidizing 5-hydroxymethylfurfural to obtain 9.8 mmol L -1 2, 5-furandicarboxylic acid (J Am Chem Soc. 2016, 138, 13639-13646). Professor Wang Shuangyin, hunan university, reported CuCo 2 O 4 Preparation of 2, 5-furandicarboxylic acid by electrocatalytic oxidation of 5-hydroxymethylfurfural at 10 mmol L -1 Oxidation in 5-hydroxymethylfurfural to give 9.37 mmol L -1 2, 5-furandicarboxylic acid (Angew Chem Int Ed Engl 2020, 59, 19215-19221). Although a large number of catalysts for preparing 2, 5-furandicarboxylic acid by electrocatalytic 5-hydroxymethylfurfural oxidation have been reported in the patent and literature, the concentration of 2, 5-furandicarboxylic acid produced in the current reaction system is extremely low<50 mmol L -1 ) Resulting in too high cost of product separation to have potential for practical use.
One key reason for the low concentration of the literature and patent products is that 5-hydroxymethylfurfural is prone to non-electrochemical side reactions in alkaline electrolytes, particularly condensation reactions under conditions of high concentration of 5-hydroxymethylfurfural, resulting in dark color humins. These byproducts result in substantial losses of raw materials and increase the difficulty of product separation. Previous studies have focused mainly on the development of electrocatalytic materials, while less research has been directed to non-electrochemical side reactions. Therefore, the kinetics of non-electrochemical side reactions are studied, and the side reactions under the condition of high-concentration 5-hydroxymethylfurfural are inhibited by designing an electrochemical reaction device, so that a new solution is provided for preparing high-concentration 2, 5-furandicarboxylic acid by electrocatalytic reaction, and meanwhile, the industrialization of the electrosynthesis of the 2, 5-furandicarboxylic acid is possible.
Disclosure of Invention
The utility model aims to solve the problems of low selectivity of 2, 5-furandicarboxylic acid, high product separation cost and the like caused by non-Faraday side reaction under the condition of high-concentration 5-hydroxymethylfurfural, and aims to provide a device for producing hydrogen by coupling for electrosynthesis of high-concentration 2, 5-furandicarboxylic acid, wherein the ratio of electrode area to electrolyte volume is improved by a reactor monomer based on solid polymer electrolyte, and the non-Faraday side reaction is further slowed down by a fed batch mode, so that possibility is provided for realizing industrialization of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid.
The utility model is realized by the following technical scheme:
an electrosynthesis high-concentration 2, 5-furandicarboxylic acid coupling hydrogen production device comprises a batch feeding mechanism and a reactor mechanism; the batch feeding mechanism comprises an electrolyte storage tank connected with the reactor mechanism through an electrolyte pipeline and a substrate storage tank connected with the reactor mechanism through a plurality of substrate pipelines;
the reactor mechanism comprises a plurality of reactor monomers connected in series; the reactor monomer comprises an anode end plate and a cathode end plate, a membrane electrode and a gas diffusion layer are arranged between the anode end plate and the cathode end plate, and the gas diffusion layer is arranged on one side close to the cathode end plate; sealing gaskets are arranged between the anode end plate and the membrane electrode and between the cathode end plate and the gas diffusion layer; the anode end plate and the cathode end plate are respectively connected with the anode and the cathode of the direct current power supply through wires.
In the above technical scheme, the end face of the anode end plate, which is close to the membrane electrode, forms an anode reaction cavity, an anode feed port and an anode discharge port, wherein the anode feed port and the anode discharge port are communicated with the anode reaction cavity, the anode feed port is arranged at the lower part of the anode reaction cavity, and the anode discharge port is arranged at the upper part of the anode reaction cavity; the anode reaction cavity is arranged in the middle of the anode end plate.
In the above technical scheme, the anode feed inlet and the anode discharge outlet are arranged at the diagonal position of the anode reaction chamber.
In the technical scheme, the anode feed port is communicated with the batch feeding mechanism or the anode discharge port of the monomer of the previous stage reactor.
In the technical scheme, the end face of the cathode end plate, which is close to the gas diffusion layer, forms a cathode flow field, and a cathode feed port and a cathode discharge port which are communicated with the cathode flow field; the cathode feed inlet is arranged at the lower part of the cathode end plate, and the cathode discharge outlet is arranged at the upper part of the cathode end plate.
In the above technical scheme, the cathode flow field is coiled in an S shape and is arranged in the middle of the cathode end plate, and the cathode feed inlet and the cathode discharge outlet are arranged at the diagonal positions of the cathode end plate.
In the above technical scheme, the cathode feed inlet and the anode feed inlet are located on different sides, and the cathode discharge outlet and the anode discharge outlet are located on different sides.
In the above technical solution, the membrane electrode includes an anion exchange membrane, and a porous anode and a hydrogen evolution catalyst layer disposed on both sides thereof; the hydrogen evolution catalyst layer is formed by spraying a hydrogen evolution catalyst on the anion exchange membrane.
In the technical scheme, a rectangular through hole-shaped reaction cavity is formed in the middle of the sealing gasket, and the size of the reaction cavity is matched with that of the anode reaction cavity; the length and width of the anion exchange membrane are larger than that of the through hole.
In the technical scheme, the substrate pipeline is connected between the substrate storage tank and the anode feed inlet of the reactor monomer, and each substrate pipeline is connected with a different reactor monomer.
The beneficial effects of the utility model are as follows:
the utility model provides a batch fed-batch continuous flow reaction device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid, which can reduce the occurrence of non-Faraday side reaction to a greater extent, further improve the selectivity of the product, obtain the high-concentration product, reduce the cost of product separation, realize long-time stable operation with large current and continuously produce the high-concentration 2, 5-furandicarboxylic acid compared with a single-feed continuous flow reaction device; meanwhile, the reactor monomer based on the solid polymer electrolyte improves the ratio of the electrode area to the electrolyte volume, reduces the residence time of the electrolyte in the reaction monomer, and reduces the occurrence of non-Faraday side reaction.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for generating hydrogen by coupling high-concentration 2, 5-furandicarboxylic acid by electrosynthesis according to the present utility model;
FIG. 2 is a schematic structural view of a reactor monomer according to the present utility model;
FIG. 3 is a schematic reaction diagram of a reactor monomer in the present utility model;
FIG. 4 is a schematic structural view of comparative example 1 of the present utility model;
FIG. 5 is 1 mol L -1 Degradation rate curves for 5-hydroxymethylfurfural at different concentrations in KOH.
Wherein:
1. batch feeding mechanism
11. Electrolyte reservoir 12 substrate reservoir
13. Electrolyte feed pump 14 No. I substrate feed pump
15. Substrate feed pump II 16 III substrate feed pump
2. Reactor mechanism
21. Reactor monomer
211. Anode end plate 212 cathode end plate
213. Anode feed inlet 214 anode discharge port
215. Cathode feed inlet of anode reaction chamber 216
217. Cathode flow field of cathode discharge port 218
22. Sealing gasket
221. Reaction chamber
23. Membrane electrode
231. Porous anode 232 hydrogen evolution catalyst layer
233. Anion exchange membrane
24. Gas diffusion layer
25. Electric wire
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be further described below by means of specific embodiments in combination with the accompanying drawings of the specification.
Example 1
As shown in FIG. 1, the device for generating hydrogen by coupling the high-concentration 2, 5-furandicarboxylic acid by electrosynthesis comprises a fed-batch mechanism 1 and a reactor mechanism 2;
the batch feeding mechanism 1 comprises an electrolyte storage tank 11 and a substrate storage tank 12, wherein the electrolyte storage tank 11 is communicated with the reactor mechanism 2 through a single feeding pipeline; the substrate storage tank 12 is communicated with the reactor mechanism 2 through a plurality of feed pipelines, and each feed pipeline is provided with a substrate feed pump; the feeding pipeline comprises a silica gel hose for connection, and a pump and a three-way joint which are arranged on the silica gel hose.
The reactor means 2 comprises a plurality of reactor monomers 21 connected in series; as shown in fig. 2, the reactor unit 21 includes an anode end plate 211 and a cathode end plate 212, a membrane electrode 23 and a gas diffusion layer 24 are disposed between the anode end plate 211 and the cathode end plate 212, and the gas diffusion layer 24 is disposed at a side close to the cathode end plate 212; a sealing gasket 22 is arranged between the anode end plate 211 and the membrane electrode 23 and between the cathode end plate 212 and the gas diffusion layer 24; the anode end plate 211 and the cathode end plate 212 are connected to the positive and negative electrodes of the dc power source through electric wires 25, respectively.
The anode end plate 211, the cathode end plate 212 and the sealing gasket 22 form a plurality of connecting holes along the edges, and are used for fastening and connecting the anode end plate 211, the cathode end plate 212 and the sealing gasket 22 through bolts, so as to fix the anode end plate 211, the cathode end plate 212, the sealing gasket 22, the membrane electrode 23 and the gas diffusion layer 24 to form the reactor monomer 21.
The end surface of the anode end plate 211, which is close to the membrane electrode 23, forms an anode reaction cavity 215, and an anode feed port 213 and an anode discharge port 214 which are communicated with the anode reaction cavity 215, wherein the anode feed port 213 is arranged at the lower part of the anode reaction cavity 215, and the anode discharge port 214 is arranged at the upper part of the anode reaction cavity 215; the anode reaction cavity 215 is arranged in the middle of the anode end plate 211, and the anode feed inlet 213 and the anode discharge outlet 214 are arranged at the diagonal position of the anode reaction cavity 215; the anode feed port 213 is communicated with the fed-batch mechanism 1 or communicated with an anode discharge port 214 of the previous stage reactor monomer 21;
the end surface of the cathode end plate 212, which is close to the gas diffusion layer 24, forms a cathode flow field 218, and a cathode feed port 216 and a cathode discharge port 217 which are communicated with the cathode flow field 218; the cathode feed inlet 216 is arranged at the lower part of the cathode end plate 212, and the cathode discharge outlet 217 is arranged at the upper part of the cathode end plate 212;
the cathode flow field 218 is coiled in an S shape, and is disposed in the middle of the cathode end plate 212, the cathode feed inlet 216 and the cathode discharge outlet 217 are disposed at diagonal positions of the cathode end plate 212, and the cathode feed inlet 216 and the anode feed inlet 213 are on opposite sides, and the cathode discharge outlet 217 and the anode discharge outlet 214 are on opposite sides.
The anode end plate 211 and the cathode end plate 212 are made of metal materials such as nickel, iron or titanium.
The membrane electrode 23 includes an anion exchange membrane 233, a porous anode 231 and a hydrogen evolution catalyst layer 232 disposed on both sides thereof; the hydrogen evolution catalyst layer 232 is formed by spraying a hydrogen evolution catalyst on the anion exchange membrane 233. The areas of the porous anode 231 and the hydrogen evolution catalyst layer 232 are both larger than 80 and 80 cm 2 。
A rectangular through hole-shaped reaction cavity 211 is formed in the middle of the sealing gasket 22, and the size of the reaction cavity 211 is matched with that of the anode reaction cavity 215; the anion exchange membranes 233 are each longer than the through-holes.
The thickness of the sealing gasket 22 is 0.02 cm-0.5 cm, and the sealing gasket is made of polytetrafluoroethylene, silica gel, fluorine gum, polyether-ether-ketone or rubber.
The anode reaction chamber 215, the cathode flow field 218 and the rectangular through holes of the sealing gasket 22 are correspondingly arranged, and the complete reaction chamber is formed after combination.
In the present embodiment, the reactor mechanism 2 is provided with five reactor monomers 21; an electrolyte supply pump 13 is arranged on a single supply pipeline of the electrolyte storage tank 11 and the reactor mechanism 2; three feeding pipelines are arranged between the substrate storage tank 12 and the reactor mechanism 2, and a substrate feeding pump 14I, a substrate feeding pump 15 II and a substrate feeding pump 16 III are respectively arranged on the feeding pipelines; the first feed line connects the substrate reservoir 12 with the anode feed 213 of the first reactor cell 21; the second feed line is connected with the substrate storage tank 12 and the anode feed port 213 of the second reactor monomer 21, and the anode feed port 213 of the second reactor monomer 21 is simultaneously communicated with the anode discharge port 214 of the first reactor monomer 21; the third feed line is connected to the substrate reservoir 12 and the anode feed 213 of the third reactor unit 21, and the anode feed 213 of the third reactor unit 21 is simultaneously connected to the anode discharge 214 of the second reactor unit 21.
In this embodiment, the dc power supply is an adjustable current/voltage stabilizing dc power supply.
The application method of the utility model comprises the following steps:
in the use process, the alkaline electrolyte and the aqueous solution of 5-hydroxymethylfurfural are respectively stored in a corresponding electrolyte storage tank and a substrate storage tank and are respectively pumped in through an electrolyte feed pump and a substrate feed pump. The substrate is mixed with electrolyte through a tee joint after passing through a substrate feeding pump I and enters a first reactor monomer; mixing the liquid flowing out of the first reactor monomer with the substrate passing through a substrate feeding pump II to enter the second reactor monomer; mixing the liquid flowing out of the second reactor monomer with the substrate passing through a III substrate feeding pump to enter a third reactor monomer; and the electrolyte flowing out of the third reactor monomer sequentially passes through the fourth and fifth reactor monomers, and finally, the 5-hydroxymethylfurfural is completely converted to obtain the high-selectivity high-concentration 2, 5-furandicarboxylic acid aqueous solution. The number of reactor monomers can be increased or decreased depending on the concentration of 5-hydroxymethylfurfural.
Reaction principle of the reactor monomer of the utility model:
as shown in fig. 3, the alkaline electrolyte containing 5-hydroxymethylfurfural enters through the anode feed inlet, and no liquid is introduced into the cathode; oxidizing 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid at the anode, consuming hydroxyl groups in the solution; the water molecules on the anode side reach the cathode through the anion exchange membrane to generate hydrogen and hydroxyl, the hydrogen is discharged through the cathode feed inlet and the discharge outlet, and the hydroxyl enters the anode through the anion exchange membrane to participate in the oxidation reaction.
The utility model sets the principle of a batch feeding mechanism:
the utility model designs a batch feeding mechanism, which is characterized in that in the initial stage of device development, firstly, the loss dynamics of 5-hydroxymethylfurfural in alkaline electrolyte is analyzed, and the specific analysis method is as follows:
1 mol L of the mixture is prepared -1 Is a KOH solution of (2);
(ii) 5-hydroxymethylfurfural was weighed according to the four concentrations shown in FIG. 5 and dissolved in 20 mL of the above-mentioned 1 mol L respectively -1 And (3) stirring rapidly in KOH solution. Samples were taken during reactions 0, 1, 2, 3, 4, 5, 6 hours, respectively, and 0.5 mol L equivalent was immediately added -1 Is acidified and diluted with sulfuric acid. Three replicates were run for each concentration.
(iii) subjecting the obtained sample to high performance liquid chromatography.
Analysis of the loss kinetics showed that: the higher the concentration of 5-hydroxymethylfurfural in the alkaline electrolyte, the faster the rate of loss. For example, at 10 mmol L -1 At a concentration, the loss rate of 5-hydroxymethylfurfural was 0.55 mmol L -1 h -1 While at 500 mmol L -1 At the concentration, the loss rate of 5-hydroxymethylfurfural is as high as 102.9 mmol L -1 h -1 Is 187 times lower in concentration.
The results of kinetic studies revealed that the root cause of high selectivity to 2, 5-furandicarboxylic acid can be obtained using low concentrations of 5-hydroxymethylfurfural starting material in the previous literature and patents: the side reaction rate of the low-concentration 5-hydroxymethylfurfural is low. At the same time, kinetic studies also indicate a strategy for obtaining high concentrations of 2, 5-furandicarboxylic acid: the side reaction rate was reduced by fed-batch, while obtaining a high concentration of 2, 5-furandicarboxylic acid. The apparatus of the present utility model thus employs a fed-batch mechanism.
Comparative example 1
To further illustrate the fed-batch continuous flow reactor, the non-Faraday side reaction can be reduced to a greater extent than the single-feed continuous flow reactor, the product selectivity can be further improved, and a high concentration of product can be obtained, and this comparative example is provided as shown in FIG. 4, and the structure of this comparative example is the same as that of example 1 except that only one feed line is provided between the substrate reservoir (12) and the reactor mechanism (2).
Application example 1
The application examples are based on the devices of the example 1 and the comparative example 1, and the alkaline electrolyte is 3-5 mol L -1 The concentration of the potassium hydroxide solution and the 5-hydroxymethylfurfural solution is 1200-2000 mmol L -1 . The flow rate ratio of the 5-hydroxymethylfurfural to the potassium hydroxide solution is 1:3.
The areas of the cathode and anode catalysts are 80 and 80 cm 2 Nickel molybdate electrode material (NiMoO) with an anode of foam nickel loading of 8.0 cm ×10.0 cm size 4 /NF). RuO with the cathode of 8.0 cm multiplied by 10.0 cm which is sprayed on an anion exchange membrane with the size of 9.0 cm multiplied by 11.0 cm 2 。
The current through the reactor was 15A, and the alkaline electrolyte concentration, 5-hydroxymethylfurfural concentration, conversion of 5-hydroxymethylfurfural, 2, 5-furandicarboxylic acid selectivity and concentration used are shown in table 1. In a fed-batch continuous flow reaction apparatus, 4 mol L -1 Potassium hydroxide and 1600 mmol L -1 At a 5-hydroxymethylfurfural concentration of 92.4% selectivity to 2, 5-furandicarboxylic acid, the 2, 5-furandicarboxylic acid concentration reaching 705 mmol L -1 ；5 mol L -1 Potassium hydroxide and 2000 mmol L -1 2, 5-furandicarboxylic acid at 5-hydroxymethylfurfural concentrationSelectivity of 91.2% and 2, 5-furandicarboxylic acid concentration of 875 mmol L -1 （136.5 g L -1 ). Under the same reaction conditions, the selectivity and the concentration of the 2, 5-furandicarboxylic acid in the fed-batch continuous flow reaction device are higher than those of the single-feed continuous flow reaction device, and the specific results are shown in Table 1.
TABLE 1
The utility model reduces the side reaction rate of high-concentration 5-hydroxymethylfurfural in alkali solution by a batch feeding mode, and improves the ratio of the electrode area to the electrolyte volume by the design of the reactor monomer based on solid polymer electrolyte, thereby further reducing the occupation ratio of the side reaction. Finally, the device can selectively oxidize the high-concentration 5-hydroxymethylfurfural into 2, 5-furandicarboxylic acid to realize 2000 mmol L -1 Selectivity of 2, 5-furandicarboxylic acid at a concentration of 91.2% for 5-hydroxymethylfurfural, concentration of 2, 5-furandicarboxylic acid reaching 875 mmol L -1 （136.5 g L -1 ) Provides possibility for industrialization of coupling hydrogen production of 2, 5-furandicarboxylic acid by electrosynthesis.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
The applicant declares that the above is only a specific embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present utility model disclosed by the present utility model fall within the scope of the present utility model and the disclosure.
Claims (10)
1. An apparatus for producing hydrogen by coupling high-concentration 2, 5-furandicarboxylic acid through electrosynthesis, which is characterized in that: comprises a batch feeding mechanism (1) and a reactor mechanism (2); the batch feeding mechanism (1) comprises an electrolyte storage tank (11) connected with the reactor mechanism (2) through an electrolyte pipeline and a substrate storage tank (12) connected with the reactor mechanism (2) through a plurality of substrate pipelines;
the reactor means (2) comprises a plurality of reactor monomers (21) connected in series; the reactor unit (21) comprises an anode end plate (211) and a cathode end plate (212), wherein a membrane electrode (23) and a gas diffusion layer (24) are arranged between the anode end plate (211) and the cathode end plate (212), and the gas diffusion layer (24) is arranged at one side close to the cathode end plate (212); sealing gaskets (22) are arranged between the anode end plate (211) and the membrane electrode (23) and between the cathode end plate (212) and the gas diffusion layer (24); the anode end plate (211) and the cathode end plate (212) are respectively connected with the anode and the cathode of the direct current power supply through electric wires (25).
2. The apparatus for the coupled production of hydrogen by the electrosynthesis of high concentration 2, 5-furandicarboxylic acid according to claim 1, wherein: an anode reaction cavity (215) is formed on the end surface of the anode end plate (211) close to the membrane electrode (23), an anode feed port (213) and an anode discharge port (214) are communicated with the anode reaction cavity (215), the anode feed port (213) is arranged at the lower part of the anode reaction cavity (215), and the anode discharge port (214) is arranged at the upper part of the anode reaction cavity (215); an anode reaction chamber (215) is provided in the middle of the anode end plate (211).
3. The apparatus for synthesizing high-concentration 2, 5-furandicarboxylic acid by coupling to produce hydrogen according to claim 2, wherein: the anode feed inlet (213) and the anode discharge outlet (214) are arranged at the diagonal position of the anode reaction cavity (215).
4. The apparatus for synthesizing high-concentration 2, 5-furandicarboxylic acid by coupling to produce hydrogen according to claim 2, wherein: the anode feed port (213) is communicated with the fed-batch mechanism (1) or is communicated with an anode discharge port (214) of the previous stage reactor monomer (21).
5. The apparatus for the coupled production of hydrogen by the electrosynthesis of high concentration 2, 5-furandicarboxylic acid according to claim 1, wherein: the end face of the cathode end plate (212) close to the gas diffusion layer (24) forms a cathode flow field (218), and a cathode feed port (216) and a cathode discharge port (217) which are communicated with the cathode flow field (218); the cathode feed port (216) is arranged at the lower part of the cathode end plate (212), and the cathode discharge port (217) is arranged at the upper part of the cathode end plate (212).
6. The apparatus for the coupled production of hydrogen from the electrosynthesis of high concentration 2, 5-furandicarboxylic acid of claim 5, wherein: the cathode flow field (218) is coiled in an S shape and is arranged in the middle of the cathode end plate (212), and the cathode feed port (216) and the cathode discharge port (217) are arranged at the diagonal positions of the cathode end plate (212).
7. The apparatus for the coupled production of hydrogen from the electrosynthesis of high concentration 2, 5-furandicarboxylic acid of claim 5, wherein: the cathode feed inlet (216) and the anode feed inlet (213) are positioned on different sides, and the cathode discharge outlet (217) and the anode discharge outlet (214) are positioned on different sides.
8. The apparatus for the coupled production of hydrogen from the electrosynthesis of high concentration 2, 5-furandicarboxylic acid of claim 7, wherein: the membrane electrode (23) comprises an anion exchange membrane (233), a porous anode (231) and a hydrogen evolution catalyst layer (232) which are arranged at two sides of the membrane electrode; the hydrogen evolution catalyst layer (232) is formed by spraying a hydrogen evolution catalyst on the anion exchange membrane (233).
9. The apparatus for the coupled production of hydrogen by the electrosynthesis of high concentration 2, 5-furandicarboxylic acid according to claim 1, wherein: a rectangular through hole-shaped reaction cavity (221) is formed in the middle of the sealing gasket (22), and the size of the reaction cavity (221) is matched with that of the anode reaction cavity (215); the length and width of the anion exchange membrane (233) are larger than that of the through hole.
10. The apparatus for the coupled production of hydrogen by the electrosynthesis of high concentration 2, 5-furandicarboxylic acid according to claim 1, wherein: the substrate pipelines are connected between the substrate storage tank (12) and the anode feed port (213) of the reactor monomer (21), and each substrate pipeline is connected with a different reactor monomer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320352381.4U CN219621273U (en) | 2023-03-01 | 2023-03-01 | Device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320352381.4U CN219621273U (en) | 2023-03-01 | 2023-03-01 | Device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219621273U true CN219621273U (en) | 2023-09-01 |
Family
ID=87772211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320352381.4U Active CN219621273U (en) | 2023-03-01 | 2023-03-01 | Device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219621273U (en) |
-
2023
- 2023-03-01 CN CN202320352381.4U patent/CN219621273U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Martínez et al. | Paired electrolysis for simultaneous generation of synthetic fuels and chemicals | |
| TWI414636B (en) | Membrane reactor | |
| Lobyntseva et al. | Electrochemical synthesis of hydrogen peroxide: Rotating disk electrode and fuel cell studies | |
| CN110117794B (en) | Electro-reduction of CO2Three-chamber type electrolytic cell device for preparing formate and electrolytic method thereof | |
| CN109675639B (en) | Preparation method and application of Ni-MOF/NiF bifunctional catalyst for simultaneously preparing hydrogen and glucaric acid | |
| TW201323074A (en) | Method for electrochemically transforming carbon dioxide | |
| CN105420751A (en) | Method for preparing hydrocarbon through electrochemical reduction of carbon dioxide | |
| CN112410799B (en) | Method for producing hydrogen | |
| CN111676484A (en) | Method and system for reducing energy consumption, electrolyzing water, producing hydrogen and symbiotically producing value-added chemicals | |
| CN111013615A (en) | Preparation method of CoP catalyst with hydrogen precipitation and oxygen precipitation high-efficiency dual functions | |
| CN113549942A (en) | Method and device for improving hydrogen production efficiency by electrolyzing water | |
| CN110479277B (en) | Method for promoting catalytic nitrogen fixation reaction of nano cobalt oxyhydroxide | |
| CN115505945A (en) | Process method for co-producing formate by coupling carbon dioxide electroreduction with alcohol oxidation without diaphragm | |
| Li et al. | Recent advances in hybrid water electrolysis for energy-saving hydrogen production | |
| CN114134521B (en) | For electrocatalytic CO2Reduced flow field membrane reactor | |
| CN111850592B (en) | Method for co-producing propionic acid and improving electrolytic water performance of anion exchange membrane | |
| CN219621273U (en) | Device for producing hydrogen by coupling of electrosynthesis of high-concentration 2, 5-furandicarboxylic acid | |
| CN218910535U (en) | Device for preparing carbon monoxide by electrocatalytic reaction | |
| CN101800325B (en) | Alkaline direct dimethyl ether fuel cell | |
| US20230151500A1 (en) | Novel electrocatalytic membrane reactor and use thereof in preparation of high-purity hydrogen | |
| CN116200765A (en) | Promoting CO 2 Novel electrode rod of high-efficient electroreduction | |
| CN114592204A (en) | Device and method for electrooxidation of furfural and 5-hydroxymethylfurfural | |
| CN113026042B (en) | Micro electrochemical reactor based on micro-fluidic technology | |
| CN115418673A (en) | Seawater PEM (proton exchange membrane) electrolytic hydrogen production system and method based on proton exchange membrane | |
| CN114133004A (en) | Novel electro-catalytic membrane reactor and application thereof in preparation of high-purity hydrogen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |