METHOD FOR CLEANSING BIG ROTOR WITH ACID

摘要

PURPOSE: A method is provided to remove attached impurities by cleansing a big rotor such as a big blower with acid without damage. CONSTITUTION: In filling a raw liquid storing tank(5) with about 15% of sulfamic acid liquid, a controller(9) opens a valve(8) to fill water in a supply storing tank(3) through a supply water line(6). Then a raw liquid transferring pump(4) moves to transfer regular amount of sulfamic acid to the supply storing tank. At that time, proper density of the storing tank is about pH 3 to 4 and the diluted sulfamic acid is sprayed from a cleansing nozzle(1) through a high pressure pump(2). The cleansing nozzle is installed in the gas inlet hole of a blower fan.