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Close-coupling of interreboiling to recovered heat

  • US 5,755,115 A
  • Filed: 01/30/1996
  • Issued: 05/26/1998
  • Est. Priority Date: 01/30/1996
  • Status: Expired due to Term
First Claim
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1. A process for interreboiling a column comprising:

  • (a) an interreboiler, connected to the column at draw and return stages in a stripping section of the column, to heat and return a column sidedraw;

    (b) locating the draw stage of the interreboiler at least 2 theoretical stages above the return stage; and

    (c) interreboiling in the interreboiler during the operation of the column to effect indirect heat transfer from a stream of two or more components to a column stream from the draw stage and passing through the interreboiler.

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