Title:
OIL-WATER SEPARATION METHOD FOR OIL-CONTAINING SCUM AND OIL-WATER SEPARATION AGENT FOR OIL-CONTAINING SCUM
Document Type and Number:
WIPO Patent Application WO/2016/151777
Kind Code:
A1
Abstract:
Provided is an oil-water separation method for oil-containing scum, which is capable of separating oil and water regardless of the properties and the state of oil-containing scum.
An oil-water separation method for oil-containing scum, which comprises a step wherein a polyoxyalkylene alkyl ether is selected in accordance with the viscosity of oil-containing scum based on (a)-(c) described below and the thus-selected polyoxyalkylene alkyl ether is added into the oil-containing scum.
(a) In cases where the viscosity at 20°C is less than 1,000 mPa·s, a polyoxyalkylene alkyl ether having an HLB value of 10-13.5
(b) In cases where the viscosity at 20°C is 1,000 mPa·s or more but less than 2,000 mPa·s, a polyoxyalkylene alkyl ether having an HLB value of 10-13.5 and/or a polyoxyalkylene alkyl ether having an alkyl group derived from a secondary alcohol
(c) In cases where the viscosity at 20°C is more than 2,000 mPa·s, a polyoxyalkylene alkyl ether having an alkyl group derived from a secondary alcohol
Inventors:
KIKKAWA TAKASHI (JP)
MURAKAMI SYUNSUKE (JP)
MURAKAMI SYUNSUKE (JP)
Application Number:
PCT/JP2015/058989
Publication Date:
September 29, 2016
Filing Date:
March 24, 2015
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
B01D17/05; C02F1/24; C02F1/56; C10M175/00
Foreign References:
| JP2015054309A | 2015-03-23 |
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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