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Method for extracting high-purity liquid neon

An extraction method and liquid neon technology, applied in the field of gas separation, can solve problems such as hidden dangers, consumption, unsafe equipment manufacturing and operation, etc., and achieve the effect of easy control and simple process

Active Publication Date: 2012-07-11
SHANGHAI QIYUAN GAS DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method of using liquid nitrogen as a cold source to prepare neon first needs to consume the cooling capacity of liquid nitrogen provided by the outside world, and secondly, the neon-helium separation equipment is a high-pressure equipment, which brings unsafe hidden dangers to the manufacture and operation of the equipment.

Method used

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  • Method for extracting high-purity liquid neon
  • Method for extracting high-purity liquid neon
  • Method for extracting high-purity liquid neon

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] The condition that the present invention adopts of example 1 and each component data sheet:

[0037]

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Abstract

The invention provides a method for extracting high-purity liquid neon. A closed refrigeration circulating system consisting of a double-helium turbine expansion engine is adopted so as to realize cold supply. The method particularly includes pressurizing raw material gas and cooling the raw material gas; removing impurities such as nitrogen, oxygen and the like in the raw material gas by the aid of a low-temperature condensation method and an adsorption method and then obtaining neon and helium gas mixture; continuing cooling the neon and helium gas mixture, separating neon from helium by the aid of a low-temperature rectification method; and obtaining the high-purity liquid neon. The closed refrigeration circulating system consisting of the double-helium turbine expansion engine meets cold requirement during extraction of the liquid neon.

Description

technical field [0001] The invention relates to a method for gas separation, in particular to a method for extracting high-purity liquid neon from helium-neon mixed gas. In particular, it relates to a low-pressure refrigeration cycle composed of a miniature high-speed gas bearing helium turboexpander, which provides the required cooling capacity for the separation process. Background technique [0002] Neon is an inert gas whose content in air is only 18.18×10 -6 However, with the development of science and technology, it has been widely used in various fields of industry as an important energy source. For example, in the electronics industry, neon gas can be used as a filling medium for neon lamps, high-voltage neon lamps, and counting tubes; it can be used in laser technology; because liquid neon has the advantages of low boiling point, it can be used as a low-temperature cold source between 26 and 40K Use; Neon can also be used in high-energy physics research. [0003]...

Claims

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Application Information

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IPC IPC(8): F25J3/02
CPCF25J1/0005F25J1/004F25J1/0045F25J1/005F25J3/04642F25J2205/04F25J2205/60F25J2210/04F25J2215/32F25J2220/02F25J2230/30F25J2245/02F25J2270/16
Inventor 俞建曹月丛严寿鹏
Owner SHANGHAI QIYUAN GAS DEV
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