METHOD OF DEWATERING AND DEWATERING APPARATUS

Title:

METHOD OF DEWATERING AND DEWATERING APPARATUS

Document Type and Number:

WIPO Patent Application WO/2005/079943

Kind Code:

A1

Abstract:

A method of dewatering in which excellent dewatering performance can be maintained continuously and stably for a prolonged period of time. There is provided a method of dewatering, characterized by comprising the immersing step of immersing an article having water attached to its surface in a solvent composition comprising as indispensable components at least one member selected from among hydrochlorofluorocarbons, hydrofluorocarbons and hydrofluoroethers and an alcohol to thereby effect water removal; the specific gravity separation step of separating water from the solvent composition containing water detached from the article according to a specific gravity separation technique; and the filtration step of filtering the solvent composition from which water has been separated in the specific gravity separation step through a filter of coalescer type to thereby effect further removal of any water remaining in the solvent composition.

Inventors:

TSUZAKI MASAAKI (JP)
HANADA TSUYOSHI (JP)

Application Number:

PCT/JP2005/003017

Publication Date:

September 01, 2005

Filing Date:

February 24, 2005

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ASAHI GLASS CO LTD (JP)
TSUZAKI MASAAKI (JP)
HANADA TSUYOSHI (JP)

International Classes:

B01D17/00; C11D7/50; (IPC1-7): B01D12/00; B01D17/00; B01D17/025; B01D17/04; C11D7/26; C11D7/28; C11D7/30

Foreign References:

JPH08155205A	1996-06-18
JP7121322B2	2022-08-18
JPH05500979A	1993-02-25
JPH05154302A	1993-06-22
JPH08259995A	1996-10-08

Other References: