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Method for producing hollow fiber carbon membrane

  • US 9,731,250 B2
  • Filed: 02/26/2014
  • Issued: 08/15/2017
  • Est. Priority Date: 02/27/2013
  • Status: Active Grant
First Claim
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1. A method for producing a hollow fiber carbon membrane using a hollow fiber carbon membrane-forming material by means of a dry method or dry-wet method comprising a spinning step, a drying step, an infusibilization step, and a carbonization step as basic steps;

  • wherein in the infusibilization step, heat treatment is performed at least two times at different temperatures, with the second temperature being higher than the first temperature;

    in the spinning step, spinning is performed using a water-soluble organic polyamine aqueous solution having a concentration of 10 to 30 wt. % as a core liquid.

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