Process for maximizing the recovery of argon from an air separation system at high argon recovery rates
US5313800A · kind A · utility
20Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1993 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Feb 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/924
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is a process for maximizing the recovery of argon at high argon recovery rates from an air separation system having a high and low pressure distillation column containing multiple distillation stages of rectification and having a sidearm column for argon recovery. A compositional measurement is made of a process variable at one or more preselected stages of rectification which have been identified as exhibiting high sensitivity to plant process variations. The total nitrogen content in the argon feed may then be computed by simulated mathematical correlation from such compositional measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.