Rapid restart system for cryogenic air separation plant
US6272884A · kind A · utility
6Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1998 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Apr 8, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for re-starting an air separation plant after an interruption in operation wherein descending liquid is collected in a non-operating distillation column and passed back to the separation section of that column before or upon re-start. The invention may employ a collection device situated in the column above the sump. Upon interruption in operation, the collection device accumulates descending liquid. From the collection device, liquid may be passed outside of the column and transferred to a holding vessel to re-inventory internal material of the column upon resumption in operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.