Fractional distillation pressure control for separation of aromatic alkylation product
US4038334A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1976 |
| Grant date | Jul 26, 1977 |
| Priority date | — |
| Expiry date | Jun 24, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2527/1213
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pressure control system and method for utilization in a process for effecting the alkylation of an aromatic hydrocarbon with a normally gaseous olefinic feed stream. The system is intended to control the pressure within a fractional distillation column which initially recovers the alkylaromatic product from unreacted aromatic hydrocarbons and a minor quantity of normally gaseous paraffinic contaminants contained in the olefinic feed stream. The system is especially advantageous in the boron trifluoride-catalyzed alkylation of benzene with ethylene, the latter containing minor quantities of ethane which must necessarily be vented, or removed from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.