Process for production of styrene
US4774378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Mar 23, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C5/333
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the production of styrene by the catalytic dehydrogenation of ethylbenzene into styrene in the presence of steam which is, in a first stage, used for heating the reaction effluents, and then used as diluent for ethylbenzene. This process is characterized in that: PA0 a molar ratio of steam:ethylbenzene of between 5 and 13 is used, PA0 the temperature in the dehydrogenation reactors is between 580.degree. and 645.degree. C., PA0 the average pressure in the first reactor is 0.6-1 kg/cm.sup.2 and those in the second and the third reactors is 0.4-0.7 kg/cm.sup.2, and PA0 the hourly space velocity of liquid ethylbenzene is 0.20-0.35 h.sup.-1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.