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Cryogenic air-separation superconducting magnetic separator, separating device and separating method

A low-temperature air separation and superconducting magnetic technology, which is applied in the fields of separation devices, low-temperature air separation and superconducting magnetic separators, can solve the problems of low product purity and achieve the effects of high product purity, high gradient and increased magnetic susceptibility

Inactive Publication Date: 2016-05-11
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The magnetic air separation device is simple and low in energy consumption, but it generally has the disadvantage of low product purity

Method used

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  • Cryogenic air-separation superconducting magnetic separator, separating device and separating method
  • Cryogenic air-separation superconducting magnetic separator, separating device and separating method
  • Cryogenic air-separation superconducting magnetic separator, separating device and separating method

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with accompanying drawing:

[0042] A method for low-temperature air separation using the superconducting Meissner effect, including allowing liquid or supercritical air to flow over the surface of a superconducting film. There are through micropores in the superconducting film, and a high-gradient magnetic field at the edge of the micropores An opposing force is provided for the oxygen molecules so that the fluid passing through the membrane is nitrogen and the trapped fluid is oxygen.

[0043] In the above method, the high gradient magnetic field at the edge of the micropore of the superconducting thin film can be provided by an external magnetic field. like figure 1 As shown, the superconducting film 1 is placed in the strong magnetic field provided by the superconducting magnet 2, and the film in the superconducting state will produce the Meissner effect under the external magnetic field, that is,...

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Abstract

The invention discloses a cryogenic air-separation superconducting magnetic separator, a separating device and a separating method. The superconducting magnetic separator comprises a shell and a separating core arranged inside the shell, wherein the separating core comprises an outer magnet and a separating element of which at least one part is a porous superconducting thin film; the separating element is arranged inside the magnetic field of the outer magnet; one side of the porous superconducting thin film is in contact with an air raw material entering from an air raw material inlet, and is used for collecting oxygen and exhausting the oxygen via an oxygen outlet; the other side of the superconductor is used for collecting nitrogen passing through a pore structure and exhausting the nitrogen via a nitrogen outlet. Compared with the conventional magnetic air separation, the invention has the following advantages: the strength and the gradient of the magnetic field are higher, the magnetic susceptibility of oxygen molecules in the cryogenic air raw material is doubled, and cool needed for maintaining the superconducting state of the magnet and the thin film can be provided, so that the separating efficiency and the product purity are higher, the cryogenic air-separation superconducting magnetic separator, the separating device and the separating method have a broad application space in the fields, such as chemical, metallurgy, medical treatment and the like, in which high-purity oxygen is needed.

Description

technical field [0001] The invention relates to air separation, in particular to a superconducting magnetic separator, a separating device and a method for utilizing the superconducting Meissner effect to separate low-temperature air. Background technique [0002] Industrial gas is the "blood" of modern industry, and its application covers many important fields such as iron and steel, metallurgy, chemical industry, shipbuilding, automobile, medicine, food, electronics, petroleum, aerospace and so on. With the rapid economic development, the demand for industrial gases has surged. According to the forecast of the American Air Products Corporation (APCI), as of 2015, the global industrial gas market will grow by 9% annually, reaching 96 billion US dollars; the Asian market will grow by 14% annually, while the growth rate in China will be as high as 19%. However, the problems of high energy consumption and high cost in industrial gas production have become prominent bottleneck...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00
CPCF25J3/04636F25J3/04793F25J3/04896F25J3/04975F25J2205/86
Inventor 包士然张瑞平张金辉邱利民唐媛张小斌方明虎
Owner ZHEJIANG UNIV
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