Process for prevention of water build-up in cryogenic distillation column
US4717408A · kind A · utility
30Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Aug 1, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process by which a vapor side product stream is taken from the bottom section of a cryogenic distillation column, such as a propane or ethane recovery column, which process optionally employs a nonpolar liquid additive for use in the separation of acid gases from a hydrocarbon feed stream. The withdrawal of the vapor side stream prevents the build-up of water in the column which would ordinarily lead to free-water formation or the formation of solid hydrates in the cryogenic distillation column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.