Split-type multi-stage tunnel strong magnetic gradient gap separation oxygen enrichment system

Abstract

The invention relates to a divided flow type strong-magnetism gradient gap separation oxygen enrichment system for multiple stages of tunnels. The system provided by the invention comprises multiple elongated permanent magnets, wherein one end of each magnet is large while the other end is small; the cross section of each magnet is in a triangle shape or a trapezoid shape (or one surface of each magnet is large while the other surface is small and magnetic fields in a similar trapezoid shape are distributed); the magnets are sequentially piled in a layered and graded mode based on the sequence of the large ends and the small ends and are supported and fixed through a support framework, thereby forming multiple stages of triangular tunnel groups; and the two same triangular tunnel groups are symmetrically arranged in a mode that triangular closed angles are opposite or trapezoid short edges are opposite to form a symmetrical multistage tunnel type paramagnetic oxygen enrichment device in a crocodile mouth shape. The area of the multi-angle tunnel with air inlets in a crocodile mouth shape is gradually decreased from the small ends of the magnets to the large ends of the magnets; the area of the last stage of oxygen enrichment channel with the highest concentration is gradually increased from the small ends of the magnets to the large ends of the magnets; and the areas of the residual triangular tunnels are gradually increased from the small ends of the magnets to the large ends of the magnets.

Description

technical field [0001] The invention relates to a split-type multi-stage tunnel strong magnetic gradient gap separation oxygen enrichment system, which belongs to the technical field of gas separation. Background technique [0002] The oxygen content in the air is 20.93%, and when the oxygen content in the air exceeds 21%, it is called oxygen-enriched air; with the development of science and technology and social progress, the application of oxygen-enriched air is becoming more and more extensive, including: oxygen-enriched combustion Energy conservation and environmental protection, medical care and sanitation, chemical and chemical reactions, and agricultural aquaculture, etc., especially the environmental pollution and energy shortage faced by human beings, make it necessary to improve the oxygen content of the family environment to resist atmospheric pollution and apply oxygen-enriched combustion to support energy conservation and environmental protection. It must be don...

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Problems solved by technology

[0004] Wei Boqing's two invention patents 200910152415.X multi-stage tunnel type paramagnetic separation oxygen enrichment device and 201010157885.8 multistage tunnel type strong magnetic gradient gap separation oxygen enrichment system have proved their shortcomings through many experiments: Due to the continuous paramagnetic force in the tunnel, after the oxygen-enriched gas enters another tunnel through the gap, a certain pressure change will be formed, that is, the air-flowing tunnel will continuously separate and flow out the oxygen-enriched gas, and its air pressure and flow rate will continue to decrease, while Finally, the tunnel that collects the oxygen-enriched gas is continuously separated into the oxygen-enriched gas, and its pressure and flow rate continue to increase. The tunnels that separate the oxygen-enriched gas in the middle stages, the oxygen-enriched gas enters due to the gap separation and flows out through the gap separation. The higher concentration of oxygen-enriched gas has relatively small changes in pressure and flow, but these pressure changes affect the separation effect of gases to a certain extent

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