Visbreaking a heavy hydrocarbon feedstock in a regenerable...

Details Visbreaking a heavy hydrocarbon feedstock in a regenerable... Visbreaking a heavy hydrocarbon feedstock in a regenerable...

C - Chemistry, Metallurgy

10

G

196/168

C10G 47/00 (2006.01)

Patent

CA 1066215

ABSTRACT OF THE DISCLOSURE Heavy hydrocarbon feedstocks, such as atmospheric and vacuum residue, heavy crude oils and the like, are converted to predominantly liquid hydro- carbon products by contacting said feedstocks in the presence of hydrogen with a regenerable alkali metal carbonate molten medium containing a glass- forming oxide, such as boron oxide, at a temperature in the range of from above about the melting point of said molten medium to about 1000°F. and at elevated pressures. Preferably, the regenerable molten medium comprises an oxide of boron in combination with a mixture of sodium and lithium carbonate or a mixture of sodium carbonate, potassium carbonate and lithium carbonate. The carbonaceous materials (coke) which are formed in the molten medium during the above-described conversion process are gasified by con- tacting said carbonaceous materials with a gaseous stream containing oxygen, steam, or carbon dioxide at temperatures of from above about the melting point of said medium to about 2000°F. in order to gasify said carbonaceous materials and thereby regenerate the molten medium.

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