Ceramic hollow fiber membrane reactor for making oxygen by air separation, and its preparing method and use

A fiber membrane reactor and fiber membrane technology are applied in separation methods, chemical instruments and methods, and evaporators heated by serpentine tubes. Difficult connection and other problems, to achieve broad commercial application prospects, excellent oxygen permeability, and reduce production costs

Active Publication Date: 2005-10-05
上海穗杉实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The sheet or plate ceramic membranes widely used in the current experimental research are not suitable for practical production applications. On the one hand, the membrane area provided by it per unit volume is very small, so the oxygen permeation area and surface exchange area are limited. On the other hand, On the one hand, the thickness of the sheet or plate ceramic membrane should not be too thin, otherwise the strength of the membr

Method used

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  • Ceramic hollow fiber membrane reactor for making oxygen by air separation, and its preparing method and use
  • Ceramic hollow fiber membrane reactor for making oxygen by air separation, and its preparing method and use
  • Ceramic hollow fiber membrane reactor for making oxygen by air separation, and its preparing method and use

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Experimental program
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Effect test

Embodiment 1

[0085] La 0.6x Sr 0.4 co 0.2 Fe 0.8 o 3-α (abbreviated as LSCF, produced by sol-gel method, average particle size 60nm) preparation of hollow fiber membrane and membrane tube reactor

[0086] The steps are: preparation of oxygen ion-electron mixed conductive ceramic electrolyte material, preparation of asymmetric hollow fiber ceramic membrane, hollow fiber membrane sintering, assembly of hollow fiber ceramic membrane reactor;

[0087] The process of preparing oxygen ion-electron mixed conductive ceramic electrolyte material is as follows:

[0088] (1) Preparation of organic polymer solution by water-soluble polymer sol method

[0089] Dissolve the organic polymer in an organic solvent, add additives and dissolve together to form an organic polymer solution; the dissolution temperature is 20-30°C; the organic polymer is polysulfone or polysulfone ether; the solvent is ethanol or N-N-dimethylacetyl ammonia.

[0090] The weight percentage is composed of: organic polymer: s...

Embodiment 2

[0107] In the process of preparing oxygen ion-electron mixed conductive ceramic electrolyte material, the melting temperature is 70-80°C; the organic polymer is polyester or cellulose acetate; the solvent is N-methylpyrrolidone or N,N-dimethylformaldehyde Amide; the additive is poly

[0108] Acrylic acid and its salt; the percentage by weight is composed of: organic polymer: solvent: additive = 10%: 87%: 3%. In the organic polymer solution, the weight ratio of the added oxygen ion-submixed conductive ceramic electrolyte material is: electrolyte material: organic polymer=5:1;

[0109] Oxygen ion-electron mixed conductive ceramic electrolyte material selection sol-gel method prepared 0% titanium-doped yttrium-stabilized zirconia (YSZ, Yttrium Stabilized Zirconium), with an average particle size of 60nm;

[0110] The film-making mold is a hollow fiber spinneret made of aluminum; the condensate is a mixed solution of water and methanol or ethanol in any proportion.

[0111] The ...

Embodiment 3

[0113] In the process of preparing oxygen ion-electron mixed conductive ceramic electrolyte material, the melting temperature is 40-50°C; the organic polymer is selected from cellulose acetate or polyester; the solvent is selected from dimethyl sulfoxide or trimethyl phosphate; the additive is selected from Polymethacrylic acid and its salt; the percentage by weight is: organic polymer: solvent: additive = 25%: 73%: 2%.

[0114] In the organic polymer solution, the weight ratio of the added oxygen ion--electron mixed conduction ceramic electrolyte material is: electrolyte material: organic polymer=5:1;

[0115] Oxygen ion-electron mixed conductive ceramic electrolyte material selection sol-gel method prepared 12% praseodymium-doped yttrium-stabilized zirconia (YSZ, Yttrium Stabilized Zirconium), with an average particle size of 60nm;

[0116] The film-making mold is a hollow fiber spinneret made of aluminum; the condensate is a mixed solution of water and propanol or ethylene ...

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Abstract

The present invention belongs to a ceramic hollow fibre film reactor for making oxygen by means of air separation, its preparation method and application. The ceramic hollow fibre film can be made into the form of tube, the parallel tubes can be formed into tube bundle; and said invented reactor is formed from tube bundle, placing disk and sealing head which are successively insert-connected together. Besides, said invention also provides the connection mode of the said all the components and concrete structure of every component. Said invention is convenient for application, and can reduce cost for making oxygen by means of air separation.

Description

technical field [0001] The invention belongs to equipment for directly separating and preparing pure oxygen from air and a preparation method thereof, in particular to the preparation of an oxygen ion-electron mixed conduction ceramic hollow fiber membrane reactor. technical background [0002] Oxygen production by air separation is of great significance in environmental protection and industrial production. For example, in thermal power plants, pure oxygen is used to replace air, and pure carbon dioxide that can be recycled will be obtained in the combustion process instead of being discharged into the atmosphere as a greenhouse gas. . Oxygen is often used as an oxidant in chemical production. If air can be used directly as a raw material, the production cost will be greatly reduced. [0003] At present, oxygen production from air separation is mainly realized through processes such as cryogenic distillation or pressure swing adsorption, and the cost is high. Although org...

Claims

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Application Information

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IPC IPC(8): B01D1/02B01D53/22B01D63/02
Inventor 谭小耀孟波杨乃涛
Owner 上海穗杉实业股份有限公司
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