F141b crude stabilization
US5683554A · kind A · utility
2Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1995 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Aug 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Separation of 1,1-dichloro-1-fluoroethane (141b) from lower boiling components contained in a crude 141b feed stream mixture by adding the feed stream mixture, and, based upon the weight of 141b in the feed stream mixture, between 100 and 300 ppm of a component that will inhibit formation of 1,1-difluoro-1-chloroethane into a feed line of a distillation column operated at between 3 and 165 psig pressure with a temperature between 100.degree. F. and 250.degree. F. in the bottom reboiler section of the column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.