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Visbreaking a heavy hydrocarbon feedstock in a regenerable molten medium in the presence of hydrogen

  • US 3,948,759 A
  • Filed: 02/27/1975
  • Issued: 04/06/1976
  • Est. Priority Date: 03/28/1973
  • Status: Expired due to Term
First Claim
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1. A process for converting a heavy hydrocarbon feedstock at least a portion of which boils above about 650°

  • F. at atmospheric pressure to lighter hydrocarbon materials which comprises contacting said feedstock in the presence of hydrogen with a regenerable alkali metal carbonate molten medium containing from 0.1 to 25 weight percent, calculated as oxide and based on total molten medium, of a glass-forming oxide selected from the group consisting of oxides of boron, phosphorus, vanadium, silicon, tungsten and molybdenum, and thereby suppressing the formation of carbonaceous materials, at a temperature in the range of from about the melting point of said medium to less than about 1000°

    F. and at elevated pressures for a time sufficient to form lighter hydrocarbon materials and carbonaceous materials, said carbonaceous materials being suspended uniformly throughout the molten medium.

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