Cryogenic air separation system with kettle vapor bypass
US5386691A · kind A · utility
8Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1994 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Jan 12, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/924
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic air separation system wherein a portion of the feed air is condensed against vaporizing product from the air separation plant and at least some of the vaporized bottom liquid from the higher pressure column is withdrawn from the system, bypassing the lower pressure column thereby increasing the L/V ratio in the upper portion of the lower pressure column to compensate for reduced liquid in that column caused by the feed air liquefaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.