Separation method and separation system of high pressure air

Abstract

The invention relates to a separation method and a separation system of high pressure air. The separation method comprises a step of compressing to-be-separated air and a step of separating the compressed air by using a centrifugation technology. The separation system comprises an air compression system, a high pressure air storage and nine centrifugal machines, wherein the air compression system is connected with the high pressure air storage, the nine centrifugal machines are connected in series via two parallel pipes and are driven to rotate by nine motors, one centrifugal machine is connected with the high pressure air storage through the pipes and further separates the introduced air and stores the separated air in the air storage tank connected therewith, and the air storage tank is connected with a gas purification apparatus so as to dry and purify the separated gas. The separation system is simple in structure and low in cost, and the separated gas has high purity.

Description

technical field [0001] The invention relates to the technology of separating gas from air, in particular to the separation method and system of high-pressure air. Background technique [0002] Air is a mixture of various gases, including nitrogen 78%, oxygen 21%, argon 0.93%, carbon dioxide 0.03%, neon 0.0018% (both volume percentages), and other inert gases. These gases are good natural energy sources with their own physical characteristics and uses. [0003] Hydrogen is the lightest gas known in the world, with a density of 0.0899 g / L. It is widely used in petrochemical, electronic, metallurgical, and aerospace industries. The density of deuterium gas is 0.167 g / L, which is an isotope of hydrogen and can be used in military industry, nuclear fuel and other fields. The density of tritium gas is 0.2505 g / L. It is also an isotope of hydrogen and can be used as nuclear fuel. It is one of the main raw materials for hydrogen bombs and one of the fuels for controlled fusion rea...

AI Technical Summary

Problems solved by technology

At present, the common method is to separate the air into its various components by rectification at low temperature. According to this method, the air is compressed, cooled to a certain temperature suitable for rectification, and then introduced into the air separation unit. The air separation unit consists of one or more columns in which air is distilled into its various components, but the separation process is complex and the purity of the separated gas cannot meet the requirements

Molecular sieve air separation system can also be used. The principle is that the gas enters the air separation device through the filter, and the air with a certain positive pressure is input into the molecular sieve pipeline by the air distribution valve of the air separation device to realize the separation of oxygen and nitrogen in the air. Positive pressure gas supply, it is very easy to form moisture and impurities in the air to be adsorbed on the molecular sieve, which is not easy to discharge, shortening the service life of the molecular sieve

[0005] In addition, the air separation devices in the prior art basically do not use environmentally friendly energy sources. Therefore, their common disadvantages are that they consume a lot of energy and cause a lot of emissions, which is not conducive to the environment.

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