Reboiler - condenser a thermosiphon and air distillation installation corresponding

摘要

The cross section of a series of passages (7) increases upwardly. An Independent claim is included for an air distillation plant containing a corresponding vaporizer-condenser (or heat exchanger) vaporizing liquid oxygen at low pressure, by condensing nitrogen at medium pressure. Preferred Features: In the first region (13-15) of passages (for liquid oxygen) where liquid state obtains, the fluid is guided largely transversely with respect to (vertical) passage length. In the second region, where the two-phase state obtains, the fluid is guided on a largely longitudinal course. Here the passage section is greater. In the first region, guidance is zigzag. The zigzag includes a section where width exceeds that of the earlier section. Passages in the corresponding second series (refers to the nitrogen section), similarly define a largely transverse course for the heating fluid (nitrogen). A number of variants based on the foregoing principles are detailed in the disclosure.