Mineral oils: processes and products – Refining – Water removal
Patent
1996-11-06
1999-07-06
Griffin, Walter D.
Mineral oils: processes and products
Refining
Water removal
208187, 208179, 252346, 252347, 252348, C10G 3304
Patent
active
059193530
ABSTRACT:
In a method for thermally reforming an emulsion, comprising removing water and an alkali metal or alkaline earth metal salt contained in an oil-in-water type emulsion of a tarry material or a heavy fuel oil (e.g., ORINOCO BITUMEN), sulfuric acid is added, in an amount of preferably 0.05% to 1.0% by weight based on the emulsion, to the emulsion, the mixture is allowed to stand at such a temperature as to give a difference in density between separated water and heavy fuel oil, preferably for 10 min or more, to permit oil-water separation, and the separated oil phase is withdrawn. When the tarry material is ORINOCO BITUMEN, an emulsion made of ORINOCO BITUMEN is thermochemically reformed by adding 0.1 to 0.4% by weight of sulfuric acid to ORINOCO BITUMEN, allowing the mixture to stand under pressure at a temperature of 170.degree. to 200.degree. C., for at least 10 min, to permit oil-water separation, subjecting the separated oil phase to flash evaporation to remove water, and centrifuging the resultant reformed ORINOCO BITUMEN to remove solid matter.
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Endou Yasuhisa
Itou Hidenobu
Katagiri Manabu
Nagita Yutaka
Tanaka Isao
Griffin Walter D.
Mitsui Engineering & Shipbuilding Co. Ltd.
Preisch Nadine
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