Method for cleaning a steam generator

Cleaning and liquid contact with solids – Processes – Including use of vacuum – suction – or inert atmosphere

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Details

134 2218, 134 24, 122382, 122392, B08B 504

Patent

active

047690852

ABSTRACT:
Through two accesses lying substantially opposite one another, above the bottom of the steam generator, a high-pressure lance carrying at its end a spray head, is brought between bundle portions of a U-shaped pipe bundle. The two lances are simultaneously intermittently shifted and between the shiftings, when the spray heads may spray between the rows of the pipe bundle, the heads are swung to-and-fro over 180.degree.. At least during said swinging, liquid is sprayed through said heads under a pressure higher than 170 bars and with a total flow rate for the two spray heads of more than 150 liters per minute. The used liquid is sucked away from the bottom with a total sucking capacity which is markedly higher than said flow rate.

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