Treatment of sulfur-containing HF-alkylation feed, hydrocarbon product, propane and acid-soluble oils derived from the alkylation
US4316998A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1980 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | Jul 29, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2527/1206
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
HF is removed from hydrocarbon streams, e.g., a propane liquid stream from HF alkylation by water washing, the wash stream being contacted with solid caustic to remove moisture therefrom. The used wash water containing HF is combines with aqueous caustic obtained from said contacting and the admixture is used to contact HF acid soluble oil to remove HF therefrom. The thus, used aqueous stream separated from this last contacting is reacted with a calcium compound to form insoluble calcium fluoride and a supernatant aqueous liquid containing regenerated caustic. The regenerated caustic is used to remove the sulfur compounds from the alkylation hydrocarbons feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.