Method of thawing a cryogenic unit
US7043938B2 · kind B2 · utility
2Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Oct 8, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F17/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for thawing and removing frozen material from a cryogenic separation unit such as that found in an olefin production plant comprising employing a flushing agent to thaw and remove the frozen material, purging the flushing agent with a gas, and removing residual flushing agent with a solvent that is miscible with the flushing agent and has a freezing temperature substantially lower than the flushing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.