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Permeation process for separating ammonia from a gas mixture

  • US 4,793,829 A
  • Filed: 03/10/1988
  • Issued: 12/27/1988
  • Est. Priority Date: 03/10/1988
  • Status: Expired due to Fees
First Claim
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1. A process for separating ammonia from an ammonia-containing gas mixture stream, which comprises:

  • providing a permeator containing a polysulphone amide separation membrane exhibiting selectivity to ammonia permeation;

    introducing the gas stream into the permeator at a temperature below about 0°

    C.;

    and contacting the gas stream with the polysulphone amide separation membrane to separately produce an ammonia-rich permeate stream and an ammonia-lean residue stream.

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