METHOD FOR RECOVERING OIL FRACTION IN CRUDE OIL SLUDGE

WIPO Patent Application WO/2012/141024

A1

Provided are: a first step for introducing crude oil sludge into a vacuum vaporizing chamber (1); a second step for heating the crude oil sludge in the vacuum vaporizing chamber (1), stirring in a vacuum, and vaporizing the water and light oil fraction in the crude oil sludge; a third step for separating the water and light oil fraction by cooling the vaporized material obtained in the second step; and a fourth step for removing the vaporization residue in the vacuum vaporizing chamber (1) obtained in the second step from the vacuum vaporizing chamber (1), and separating the heavy oil fraction and the solid residue. Using this simple method, the oil fraction of the crude oil sludge can be recovered without requiring chemical injection or another similar pretreatment, and with substantially no water being admixed with the recovered oil fraction.

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MINAMIGUCHI HITOSHI (JP)
MOHRI TADAMI (JP)

PCT/JP2012/058898

October 18, 2012

April 02, 2012

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SYSTEM KIKOU CO LTD (JP)
MINAMIGUCHI HITOSHI (JP)
MOHRI TADAMI (JP)

C10G1/02

JPH03229682A	1991-10-11
JPH05320658A	1993-12-03
JP2000129270A	2000-05-09
JP2000334738A	2000-12-05
JP2004243300A	2004-09-02
JP2005349240A	2005-12-22
JP2006282858A	2006-10-19
JP2006526033A	2006-11-16

AKATSUKA Kenji et al. (JP)
Kenji Akatsuka (JP)

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