REDUCING METHOD OF COOLING DRIVING TIME FOR AIR SEPARATOR

摘要

PURPOSE: A reducing method for cooling driving time of an air separator is provided to reduce operating time of a main condenser by supplying liquid oxygen to the main condenser when a specific condition is completed. CONSTITUTION: A reducing method for cooling driving time of an air separator includes following stages to separate air normally by cooling each component of the air separator stopped in operation for a long time. Liquid oxygen is supplied to a main condenser(166) from a storage tank(20) of liquid oxygen when hunting is generated with changing a level of liquid oxygen in the main condenser inside a rectifying barrel(160). Supply of liquid oxygen stops when hunting is finished. Liquid oxygen is supplied when the level of liquid oxygen is maintained over a percentage of 23 and internal temperature of a lower column(164) is under 170 degrees below zero. Supply of liquid oxygen is stopped when the level of liquid oxygen maintains over the percentage of 65 and internal temperature of the lower column is under 172 degrees below zero. Thereby, cooling driving time is reduced as a whole.