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Cathode electrolyzer of a device for preparing sodium metal by electrolysis

A cathode electrolysis and electrolysis cell technology, applied in the direction of electrolysis components, electrolysis process, diaphragm, etc., can solve the problems of difficult sealing, high sealing technology requirements, and difficult disassembly of the device, so as to achieve easy disassembly, improve safety performance, and airtight good sex effect

Active Publication Date: 2017-04-05
中国东方电气集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve Na-β-Al in the prior art 2 o 3 The inside of the diaphragm tube is used as the cathode chamber, and the feeding part and the cathode part in the device are sealed as a seal between ceramics and metal. The sealing technology requires high requirements, so it is not easy to seal well, and the device is not easy to disassemble. The cathode electrolytic cell of the electrolytic sodium metal preparation device has a simple structure, is easy to disassemble, and the sealing structure is easy to realize, and the device has good air tightness, which provides an effective guarantee for the electrolytic preparation of high-purity metal sodium

Method used

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  • Cathode electrolyzer of a device for preparing sodium metal by electrolysis
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  • Cathode electrolyzer of a device for preparing sodium metal by electrolysis

Examples

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Effect test

Embodiment 1

[0035] A cathodic electrolytic cell of a device for preparing sodium metal by electrolysis, comprising an electrolytic cell main body 1, Na-β-Al 2 o 3 Diaphragm tube 2, top cover 3 and sealing structure, the Na-β-Al 2 o 3 The diaphragm tube 2 is open at the top and closed at the bottom, and is arranged inside the electrolytic cell main body 1, the top cover 3 is arranged above the electrolytic cell main body 1, and the Na-β-Al 2 o 3 The top of the diaphragm tube 2 extends into the inside of the top cover 3, the sealing structure connects the top cover 3 with the electrolytic cell main body 1, and the sealing structure connects the Na-β-Al 2 o 3 The diaphragm tube 2 is fixed, and the Na-β-Al 2 o 3 A closed cavity is formed between the outer wall of the diaphragm tube 2 and the inner wall of the electrolytic cell main body 1, and the cavity is the cathode chamber 4, and the Na-β-Al 2 o 3 The airtight cavity between the inside of the diaphragm tube 2 and the inside of the...

Embodiment 2

[0037] A cathodic electrolytic cell of a device for preparing sodium metal by electrolysis, comprising an electrolytic cell main body 1, Na-β-Al 2 o 3 Diaphragm tube 2, top cover 3 and sealing structure, the Na-β-Al 2 o 3 The diaphragm tube 2 is open at the top and closed at the bottom, and is arranged inside the electrolytic cell main body 1, the top cover 3 is arranged above the electrolytic cell main body 1, and the Na-β-Al 2 o 3 The top of the diaphragm tube 2 extends into the inside of the top cover 3, the sealing structure connects the top cover 3 with the electrolytic cell main body 1, and the sealing structure connects the Na-β-Al 2 o 3 The diaphragm tube 2 is fixed, and the Na-β-Al 2 o 3 A closed cavity is formed between the outer wall of the diaphragm tube 2 and the inner wall of the electrolytic cell main body 1, and the cavity is the cathode chamber 4, and the Na-β-Al 2 o 3 The airtight cavity between the inside of the diaphragm tube 2 and the inside of the...

Embodiment 3

[0041] On the basis of embodiment 2:

[0042] The upper and lower parts of the inner wall of the fixing ring 6 are provided with internal threads, the middle part of the inner wall is provided with an annular protrusion 12, and the lower part of the outer wall of the fastening ring 7 is provided with external threads, and the external threads are connected to the fixed ring. The inner thread on the upper part of the inner wall of the ring 6 is connected, the upper part of the outer wall of the electrolytic cell main body 1 is provided with an outer thread, and the outer thread is connected with the inner thread on the lower part of the inner wall of the fixed ring 6; the upper pressure ring 8 is arranged on the between the fastening ring 7 and the upper edge of the annular protrusion 12, and press the upper sealing ring 10 on the upper edge of the annular protrusion 12 and the Na-β-Al 2 o 3 Between the outer walls of the diaphragm tube 2, the lower pressure ring 8 is arranged...

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Abstract

The invention relates to a cathode electrolytic cell of a device for preparing metallic sodium by electrolysis and belongs to the technical field of preparing and sealing metallic sodium by electrolysis and fusion. In a sealing device, the place between the outer wall of a Na-beta-Al2O3 membrane tube and the inner wall of an electrolytic cell main body is taken as a cathode chamber, so welding sealing between metal and ceramic is avoided; the cathode electrolytic cell is simple in structure, easy to dismount, easy in implementation of a sealing structure, good in airtightness of the device and capable of providing effective guarantee for preparation of high-purity metallic sodium by electrolysis.

Description

technical field [0001] The invention relates to a component of an electrolysis device, more specifically, the invention relates to a cathode electrolyzer of a device for preparing sodium metal by electrolysis, which belongs to the technical field of electrolytic melting preparation and sealing of sodium metal. Background technique [0002] In recent years, with the technical progress in related fields and the needs of the market, metal sodium has been used in atomic power stations, rare metal smelting and chemical industries. The production technologies for preparing metallic sodium mainly include caustic soda melting electrolysis, salt melting electrolysis and electrolytic sodium amalgam method. The crude sodium prepared by the above method has many impurities and low purity, and needs to be purified before it can be used in related industries. At present, most of the methods for purifying metallic sodium use industrial sodium as a raw material, and adopt cold trap method,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/02C25C7/00C25C7/04
CPCC25C3/02C25C7/00C25C7/04
Inventor 阴宛珊袁小武张全生王淼党国举江瑜
Owner 中国东方电气集团有限公司
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