Document Type and Number:
Japanese Patent JPS5331644
Kind Code:
B2
Abstract:
In the thermal cracking of a heavy petroleum oil (having an API specific gravity of not more than 25) in a tubular type heating furnace, possible occurrence of coking trouble inside the furnace can be prevented by applying a magnetic field of fixed magnitude transversely to the flow of the heavy petroleum oil being introduced into the furnace or by applying a fixed magnitude of magnetic field transversely and, at the same time, applying a fixed magnitude of direct-current voltage parallel to the flow of the heavy petroleum oil being introduced into the furnace. More effective prevention of occurrence of coking can be obtained by having a specific inorganic substance incorporated in the heavy petroleum oil before the oil is subjected to the magnetic field or to simultaneous application of the magnetic field and voltage.
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Application Number:
JP5574975A
Publication Date:
September 04, 1978
Filing Date:
May 08, 1975
Export Citation:
International Classes:
B01J19/00; B01J19/08; C10G32/02