| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cryogenic air separation apparatus allowing automatic reduction of a start-up time even if frequently repeating start-up. <P>SOLUTION: In a start-up process, a total amount of an oxygen amount entering a cold insulation tank 5 and a total amount of an oxygen amount leaving the cold insulation tank 5 are automatically calculated inside a control computer 40, and a supply amount of material air is brought into an optimum state for the cold insulation tank start-up on the basis of automatic increase control, automatic closure of a material air start-up bypass valve, and automatic reduction control of a product oxygen extraction amount. <P>COPYRIGHT: (C)2004,JPO</p> |
