Title:
The additive for removing the sediment of a heat exchanger under a wet layup state
Document Type and Number:
Japanese Patent JP6256996
Kind Code:
B2
Abstract:
This invention relates to compositions and methods for the at least partial dissolution, disruption and/or removal of deposits, such as scale and other deposits, from heat exchanger components. The heat exchanger components can include pressurized water reactor steam generators. The pressurized water reactor steam generators can be in a wet layup condition. The compositions include elemental metal and complexing agent selected from the group consisting of sequestering agent, chelating agent, dispersant, and mixtures thereof. The methods include introducing the compositions into the heat exchanger components.
Inventors:
Klitzer, Curtis, Earl
Weichel, Lauren, Earl
Weichel, Lauren, Earl
Application Number:
JP2015507025A
Publication Date:
January 10, 2018
Filing Date:
April 01, 2013
Export Citation:
Assignee:
Westinghouse Electric Company LLC
International Classes:
C02F5/08; B08B3/08; C02F5/10; C02F5/12; C11D7/60; C23G1/00; F28F19/00; G21C19/02; G21F9/28
Domestic Patent References:
| JP62205293A | ||||
| JP2003176997A | ||||
| JP2004535546A |
Attorney, Agent or Firm:
Yoshihiro City
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