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A pressurized electrolyzer and method for strengthening electrolysis

An electrolytic cell and electrolyte technology, applied in the field of electrolysis, can solve the problems of increasing the production rate of active oxygen, which has not been reported, and achieve the effects of improving the anodic oxidation process, improving electrolysis efficiency, and reducing energy consumption

Inactive Publication Date: 2019-02-05
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The focus of research on pressurized electrolysis systems at home and abroad focuses on pressurized water electrolysis in alkaline systems to produce hydrogen. The electrolysis systems are mostly homogeneous. The electrolysis process in the pressurized system containing the electrolyte (liquid phase) and the mineral to be electrolyzed (solid phase) is different from the electrolysis system of the homogeneous system mentioned above. The existence of pressure can not only promote the hydrogen evolution process of the cathode, It can also have a huge impact on the oxidation process of the anode, such as increasing the production rate and amount of active oxygen at the anode to promote the purification process of minerals

Method used

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  • A pressurized electrolyzer and method for strengthening electrolysis
  • A pressurized electrolyzer and method for strengthening electrolysis
  • A pressurized electrolyzer and method for strengthening electrolysis

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Embodiment 1

[0075] A pressurized electrolyzer comprising:

[0076] The reaction tank includes a tank body and a tank cover, the tank body and the tank cover are sealed and connected, and the tank cover is provided with a sealable negative connection hole, a positive connection hole and an air inlet;

[0077] The electrodes placed in the reaction tank include a cathode 7 and an anode 12, the cathode 7 is connected to the negative pole of the power supply through the negative connection hole, and the anode 12 is connected to the positive pole of the power supply through the anode 12 connection hole;

[0078] The electrolytic diaphragm is arranged in the reaction tank and separates the cathode 7 and the anode 12;

[0079] The pressurizing device is used to increase the pressure in the reaction tank, including a gas supply device and / or a heating device, the gas outlet of the gas supply device communicates with the reaction tank through the air inlet, and the heating device is used to supply ...

Embodiment 2

[0081] A pressurized electrolyzer such as figure 1 shown. The pressurized electrolyzer comprises:

[0082] The reaction tank includes a tank body and a tank cover, the tank body and the tank cover are sealed and connected, and the tank cover is provided with a sealable negative connection hole, a positive connection hole and an air inlet;

[0083] The electrode placed in the reaction tank includes a cathode 7 and an anode 12 opposite to it, the cathode 7 is connected to the negative pole of the power supply through the negative connection hole, and the anode 12 is connected to the positive pole of the power supply through the anode 12 connection hole;

[0084] The ion membrane cover is wrapped on the cathode 7;

[0085] The heating device comprises an electric heating furnace 11, the reaction tank is placed in the electric heating furnace 11, the furnace core of the electric heating furnace 11 is a resistance wire furnace core, and the heating device surrounds the tank body ...

Embodiment 3

[0094] Use the pressure electrolyzer described in embodiment 2 to electrolyze coal water slurry, concrete steps are: take by weighing 40g sodium hydroxide, be dissolved in 1L distilled water, after it dissolves, add 20g coal wherein, after stirring, it is poured into In the pressurized electrolytic cell, the temperature of the solution in the pressurized electrolytic cell was kept at 100° C., the pressure was 0.1 MPa, no oxygen was introduced, the rotation speed of the stirring device was 200 r / min, and the treatment was performed for 120 min.

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Abstract

The invention provides a pressurized electrolytic cell and a method for strengthening electrolysis. The pressurized electrolytic cell comprises: a reaction tank; an electrode placed in the reaction tank, including a cathode and an anode; an electrolytic diaphragm, which separates the cathode and the anode; Pressure devices, including gas supply devices and / or heating devices. The pressurized electrolytic cell can be pressurized under normal temperature conditions, and the mass transfer process at the electrode interface can be strengthened through pressurization, especially the transfer of sulfur in minerals and the process of strengthening mineral purification; Effectively reduce the energy consumption of electrolytic hydrogen production; the use of oxygen pressurization can enhance the precipitation and transfer of active oxygen in the electrolyte, thereby improving the anodic oxidation process of the electrolyte, thereby improving the efficiency of cathode hydrogen evolution. The pressurized electrolytic cell is especially suitable for the electrolysis of a heterogeneous system, which can realize the enhancement of the cathode hydrogen production process, and at the same time increase the amount and reaction rate of the anode active oxygen.

Description

technical field [0001] The invention belongs to the technical field of electrolysis, and relates to a pressurized electrolysis cell and a method for strengthening electrolysis. Background technique [0002] At present, the methods for producing hydrogen in industry mainly include: electrolysis of water, water gas method, electrolysis of saturated salt water, natural gas synthesis, etc. Among them, electrolysis of water to prepare hydrogen is one of the most widely used methods with relatively mature production technology. Hydrogen production is currently a commercial technology for obtaining high-purity hydrogen, which is used in the field of fuel pressurized electrolyzers and aerospace. The energy consumption in the most ideal state of electrolytic hydrogen production should be 2.69kWh / Nm 3 , but the total energy consumption of current hydrogen production technology is 6.7-7.3kWh / Nm 3 , and even the comprehensive efficiency of water electrolysis hydrogen production techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/12C25B9/08C25B9/19
CPCC25B1/04C25B9/05C25B9/19Y02E60/36
Inventor 公旭中王志周玉健王东王明涌孙丽媛
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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