Process and installation for producing gaseous nitrogen with variable flow rate
US5355680A · kind A · utility
9Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Oct 15, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In this process of the liquid nitrogen/rich liquid HPN swing type, the connection between the head of the column (4) and the liquid nitrogen holding tank (7) is effected, for the two flow directions of the liquid nitrogen, by a single conduit (12) equipped with a pressure reducing device (13). The direction and the flow rate of the liquid nitrogen flow are controlled by the variations of the pressure of the column, and the holding tanks of liquid nitrogen and rich liquid are maintained at constant pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.