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Patent Searching and Data


Title:
METHOD AND APPARATUS FOR RECOVERING FLUORINE-BASED SOLVENT, AND METHOD AND SYSTEM FOR CLEANING OBJECT TO BE CLEANED
Document Type and Number:
WIPO Patent Application WO/2019/124239
Kind Code:
A1
Abstract:
The present invention provides a method for recovering a fluorine-based solvent from a used cleaning solvent composition with high purity and high recovery rate. A method for recovering a fluorine-based solvent according to the present invention is configured to recover a fluorine-based solvent from a used cleaning solvent composition that contains a dirt component and the fluorine-based solvent; and this method for recovering a fluorine-based solvent comprises a step (A) for obtaining a water mixture by adding water to the used cleaning solvent composition, a step (B) for obtaining a liquid distillate that contains water and the fluorine-based solvent as main components by means of distillation of the water mixture, and a step (C) for removing water from the liquid distillate.

Inventors:
ANDO Keiji (6-2 Marunouchi 1-chom, Chiyoda-ku Tokyo 46, 〒1008246, JP)
SUGAWARA Mitsuru (6-2 Marunouchi 1-chom, Chiyoda-ku Tokyo 46, 〒1008246, JP)
Application Number:
JP2018/046046
Publication Date:
June 27, 2019
Filing Date:
December 14, 2018
Export Citation:
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Assignee:
ZEON CORPORATION (6-2 Marunouchi 1-chome, Chiyoda-ku Tokyo, 46, 〒1008246, JP)
International Classes:
B01D3/00; B08B3/08; C11D7/26; C11D7/28; C11D7/30; C11D7/50
Domestic Patent References:
WO2016181922A12016-11-17
WO2015174487A12015-11-19
Foreign References:
JP2015174014A2015-10-05
JP2006083308A2006-03-30
JPH0663303A1994-03-08
Attorney, Agent or Firm:
SUGIMURA Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigasek, Chiyoda-ku Tokyo 13, 〒1000013, JP)
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