Vaporization-condensation apparatus for air distillation double column, and air distillation equipment including such apparatus
US5071458A · kind A · utility
22Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Jul 25, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The air distillation double column (1,2) includes an apparatus for vaporizing oxygen and condensing nitrogen which comprises on one hand a running type main heat exchanger (7) which is partially immersed during stoppage of the equipment and on the other hand an auxiliary heat exchanger (20) which alone is responsible for liquid vaporization when the equipment is restarted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.