Development of Chemical-Cleaning Technology Effective at Neutral pH and Ambient Temperature Condition Enable Safety Improvement and Period Reduction of Maintenance of Power Generation Equipment
In water systems in power plants, etc., scale adhesion and rust generation may cause problems. As a countermeasure, the periodic chemical cleaning of scale and rust are carried out. Mitsubishi Heavy Industries, Ltd. has a developed chemical cleaning technology effective at neutral pH and ambient-temperature featuring high safety and high workability. Currently, we are carrying out cleaning performance evaluation tests and actual equipment cleaning of adhered scale mainly on thermal power plant equipment such as electromagnetic filters, HRSG evaporator pipes (heat recovery boiler), and main steam evaporation pipes (drum type and once-through type), and are promoting the application of the developed technology to after-sales service to realize high safety and the shortening of construction period.
