| 摘要 |
<p>PURPOSE:To respond to variation in a demand amount, to reduce in entire size, to eliminate necessity of skillfulness for an operation and to prepare low- cost product nitrogen gas. CONSTITUTION:Not only generated cold of an expansion turbine but also liquid nitrogen of a liquid nitrogen storage tank is used as cold. A dephlegmator 15 containing a condenser 15a is provided in an upper part of a rectifying tower 10, and part of nitrogen gas in the power 10 is always guided and liquefied in the condenser 15a.</p> |
