Title:
METHOD FOR SUPPRESSING CORROSION FATIGUE OF BOILER EVAPORATION TUBE
Document Type and Number:
WIPO Patent Application WO/2021/181722
Kind Code:
A1
Abstract:
This invention effectively suppresses the corrosion fatigue of a boiler evaporation tube that is associated with repeated stress attributed to the presence of a corrosive environment and scales. This method for suppressing corrosion fatigue of a boiler evaporation tube includes maintaining the dissolved oxygen concentration of the boiler water at 1.0 mg/L or less. Preferably deionized water is used for the boiler water and a scale dispersant is present in the boiler water.
Inventors:
SAKAI MIZUYUKI (JP)
UCHIDA KAZUYOSHI (JP)
UCHIDA KAZUYOSHI (JP)
Application Number:
PCT/JP2020/033204
Publication Date:
September 16, 2021
Filing Date:
September 02, 2020
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F5/10; C02F5/00; F22B37/00
Foreign References:
| JP2002136994A | 2002-05-14 | |||
| JP2017074550A | 2017-04-20 | |||
| JP2015068631A | 2015-04-13 | |||
| JP2020043294A | 2020-03-19 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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