High pressure heat exchanger for cooling high fouling liquids

  • US 5,001,906 A
  • Filed: 05/04/1989
  • Issued: 03/26/1991
  • Est. Priority Date: 05/04/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. A high pressure heat exchanger including:

  • a body comprising a pair of spaced apart external parallel flat plates having substantially the same size and shape and with each plate terminating in a peripheral edge portion;

    the body having side wall means joined to the peripheral edge portion of each external plate thereby enclosing a heat exchange space defined by the external plates;

    the body having a plurality of spaced apart internal parallel flat baffle plates parallel to the external plates and with the peripheral edge portion of each baffle plate joined to the body side wall means by welding;

    a tubular high pressure liquid inlet header external of the body;

    means to feed high pressure liquid to the inlet header;

    a tubular high pressure liquid outlet header external of the body;

    means to withdraw high pressure liquid from the outlet header;

    a plurality of separate tubular runs in communication with the inlet and outlet headers;

    each tubular run including a tubular portion between substantially all adjacent plates of the body;

    the tubular portions of the same run being interconnected at one end by a tubular liquid return means with a tubular portion on the opposite side of a first adjacent body plate and interconnected at the other end by a tubular liquid return means with any tubular portion that is on the opposite side of a second adjacent body plate;

    the body interior having liquid communication means which permits a second liquid to flow from the space on one side of a baffle plate to the space on the other side of the baffle plate in a serpentine flow path through the body while in heat exchange contact with a first liquid flowing countercurrent in the tubular runs;

    the body having inlet means for feeding a second liquid into the body so that it flows countercurrent to the first liquid in the tubes; and

    the body having outlet means for withdrawing the second liquid from the body.

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