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Apparatus and method for diagnosis of catalyst performance

  • US 6,026,639 A
  • Filed: 11/03/1997
  • Issued: 02/22/2000
  • Est. Priority Date: 11/03/1997
  • Status: Expired due to Fees
First Claim
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1. A method comprising the steps of:

  • passing a stream of fluid containing at least one fluctuating parameter through a unit operation comprising at least one of a catalyst, a reactor and an absorber, said unit operation affecting the one fluctuating parameter;

    sensing, downstream of said unit operation, at least one parameter value as a function of time of said at least one fluctuating parameter having a frequency in the fluid stream;

    determining at least one frequency parameter as a function of said at least one parameter value and the frequency, and a first control value based on said frequency parameter;

    determining a second control value correlated to the frequency of said fluctuating parameter independently of said first control value; and

    generating a control signal based on a comparison of the first and second control values.

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