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Methods for inhibiting fouling in fluid catalytic cracking units

  • US 5,158,667 A
  • Filed: 08/23/1991
  • Issued: 10/27/1992
  • Est. Priority Date: 08/23/1991
  • Status: Expired due to Fees
First Claim
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1. A method for inhibiting the formation of polymers and the subsequent fouling equipment surfaces in a fluid catalytic cracking unit during the processing of hydrocarbon slurry streams at a temperature of 650°

  • F. to 1000°

    F. comprising adding to said streams from about 5 to about 5000 parts per million parts of said stream of aminoethyl piperazine contained in an organic solvent and polybutynyl thiophosphoric acid ester.

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