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Coke drum bottom unheading system

  • US 7,534,326 B1
  • Filed: 08/29/2005
  • Issued: 05/19/2009
  • Est. Priority Date: 09/29/2004
  • Status: Expired due to Fees
First Claim
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1. A method of clamping a bottom head cover of a coke drum to a bottom flange of said coke drum, comprising:

  • determining a minimum number of clamps needed to maintain an effective seal between said bottom head cover and said bottom flange of said coke drum;

    mounting at least said minimum number of clamps around a periphery of said bottom flange to secure said clamps to said coke drum;

    and actuating said mounted clamps using a control unit from a remote location to clamp said bottom head cover to said bottom flangewherein said multiple individual clamps are spaced apart by no more than a maximum distance determined based on one or more of a diameter and geometry of said bottom flange, a stiffness of said bottom flange, a resiliency and response under varying load of a gasket disposed between said bottom flange and said bottom head cover, and a pressure exerted on said bottom head cover from liquid inside said coke drum.

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