Title:
BOILER WATER TREATMENT APPARATUS AND BOILER OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/002744
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a boiler water treatment apparatus capable of preventing problems such as scale and corrosion inside a boiler can while improving boiler concentration rate; and a boiler operation method using said water treatment apparatus. Provided is a boiler water treatment apparatus for treating raw water using a reverse osmosis membrane characterized in that said reverse osmosis membrane is a reverse osmosis membrane wherein: the NaCl removal rate when using a 0.3-1.5 MPa evaluation pressure and a 500-2000 mg/L NaCl solution is 93% to less than 99.4%; and pure water flux when a 0.75 MPa evaluation pressure is used is at least 1.3 m/d. Also provided is a boiler operation method wherein said treated water is supplied to the boiler after adding a scale-dispersing agent thereto.
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Inventors:
HAYAKAWA KUNIHIRO (JP)
UCHIDA KAZUYOSHI (JP)
UCHIDA KAZUYOSHI (JP)
Application Number:
PCT/JP2016/068958
Publication Date:
January 05, 2017
Filing Date:
June 27, 2016
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F1/44; B01D61/02; C02F5/00; C02F5/10; C02F5/14; F22D11/00
Foreign References:
| JP2000117076A | 2000-04-25 | |||
| JP2008180492A | 2008-08-07 | |||
| JP2010172816A | 2010-08-12 | |||
| JP2014503352A | 2014-02-13 | |||
| JPH11309354A | 1999-11-09 | |||
| JP2003080042A | 2003-03-18 | |||
| JP2006110520A | 2006-04-27 | |||
| JP2001314868A | 2001-11-13 | |||
| JP2007125544A | 2007-05-24 | |||
| JPS49126159A | 1974-12-03 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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