Title:
METHOD FOR TREATING SLUDGE
Document Type and Number:
WIPO Patent Application WO/2017/126783
Kind Code:
A1
Abstract:
The present invention relates to a method for treating sludge, comprising the steps of: mixing sludge and an oil at a mass ratio of between 1:0.5 and 1:1.5; and inputting the mixture to a series of multi-stage evaporators to reduce moisture using steam, wherein at least one of the multi-stage evaporators is operated in a depressurized state, and an operating temperature of a preceding evaporator is lower than the operating temperature of a following evaporator. The method also comprises the step of centrifuging the moisture-reduced mixture to primarily separate the oil from the mixture, wherein a boiling point of the oil is 30℃ to 80℃ higher than the temperature of the steam supplied in the step of reducing the moisture.
Inventors:
PARK BYEONG YUN (KR)
Application Number:
PCT/KR2016/012168
Publication Date:
July 27, 2017
Filing Date:
October 27, 2016
Export Citation:
Assignee:
KUN MIN E&C CO LTD (KR)
PARK BYEONG YUN (KR)
PARK BYEONG YUN (KR)
International Classes:
B03B5/28; C02F1/04; C02F1/38; C02F11/127; C02F11/13; F26B21/00; F26B23/00
Foreign References:
| KR20120038132A | 2012-04-23 | |||
| KR20010038613A | 2001-05-15 | |||
| KR100904065B1 | 2009-06-23 | |||
| KR100400613B1 | 2003-10-08 | |||
| KR20080047246A | 2008-05-28 |
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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