FIELD: technological processes.
SUBSTANCE: invention relates to a method of producing styrene by vapor-phase dehydration of methylphenylcarbinol-containing material at high temperature on a catalyst containing aluminum oxide in the presence of water vapor with weight ratio of steam: methylphenylcarbinol equal to (1.0–1.2):1.0, respectively. Method is characterized by that dehydration during first 50 hours is carried out at dilution of steam: methylphenylcarbinol by 20–30 % higher than average cycle dilution, after reducing the conversion of methylphenylcarbinol less than 98 % with dilution of steam: methylphenylcarbinol by 12–15 % below average dilution.
EFFECT: use of the invention increases inter-regeneration service life of the catalyst.
1 cl, 1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR ACTIVATING A CATALYST BASED ON GAMMA-ALUMINIUM OXIDE FOR PRODUCING STYRENE | 2021 |
|
RU2760678C1 |
| METHOD OF PRODUCING STYRENE | 2019 |
|
RU2721772C1 |
| METHOD OF PRODUCING STYRENE BY LIQUID-PHASE DEHYDRATION OF METHYLPHENYLCARBINOL-CONTAINING RAW MATERIAL | 2021 |
|
RU2767422C1 |
| CALCIUM PHOSPHATE CATALYST FOR VAPOUR-PHASE DEHYDRATION OF METHYPHENYLCARBINOL FRACTION | 2015 |
|
RU2608303C1 |
| 0 |
|
SU389069A1 | |
| METHOD OF PRODUCTION OF STYRENE | 1998 |
|
RU2141933C1 |
| PROCESS OF PRODUCING STYRENE VIA LIQUID-PHASE DEHYDRATION OF METHYL PHENYL CARBINOL-CONTAINING FEEDSTOCK (OPTIONS) | 2005 |
|
RU2296114C1 |
| PROCESS FOR PREPARING STYRENE | 1995 |
|
RU2083543C1 |
| STYRENE PRODUCTION PROCESS | 2000 |
|
RU2177467C2 |
| STYRENE PRODUCTION PROCESS | 1996 |
|
RU2120934C1 |
