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US 4,046,670 AGranted
Method for the treatment of heavy petroleum oil
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorsKoji Seguchi, Minoru Sugita, Kazuyoshi Inada, Kiyoshi Tagaya, Yuji Nakamura
Life of this patent
Estimating the term…
Abstract
In the thermal cracking of heavy petroleum oil (having an API specific gravity of not more than 25) in a tubular type heating furnace, a specific inorganic substance is added in a specific proportion to the heavy petroleum oil to prevent the heavy oil from undergoing coking inside the furnace.
Claims3
In a process for the thermal cracking of a heavy petroleum oil having an API specific gravity of not more than 25, within a tubular type heating furnace at a temperature of not less than 400.degree. C., the improvement comprising:
- mixing the heavy petroleum oil feed to the furnace with 0.5 to 5% by weight of an inorganic substance having a surface area of not less than 30m.sup.2 /g and an average particle diameter of not more than 30 microns, said inorganic material containing, as principal components, a high melting oxide and an iron oxide, said inorganic material being obtained by alkali treatment of a member selected from the group consisting of Laterite, Garnierite, Magnesite, Fly ash and Kyoto yellow ochre and mixtures thereof.
Dependencies are inferred from the claim text.