Process for preparing divinylbenzene
AssigneeNippon Steel Chemical Co., Ltd.
InventorsTomiho Arima, Toyoki Fujita, Yasuhiko Ikeda, Masahiro Mikajiri
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Abstract
In the recovery of dehydrogenation oil from the reaction product gas from the vapor-phase catalytic dehydrogenation of diethylbenzene by condensing the gas in a condenser, this invention relates to a process for preparing divinylbenzene by spraying a high-boiling oil or a high-boiling oil and water inside the condenser and letting the oil or the oil and water contact the reaction product gas and the process is capable of dehydrogenating diethylbenzene at high levels of conversion and selectivity without blocking of the condenser and yielding divinylbenzene of high concentration efficiently in a long-term stable continuous operation.
Claims6
A process for preparing divinylbenzene, comprising:
- dehydrogenating a reaction gas comprising diethylbenzene to form a reaction product gas comprising divinylbenzene;
- introducing said reaction product gas into a condenser;
- spraying a high-boiling oil inside said condenser such that said high-boiling oil contacts said reaction product gas, wherein said high-boiling oil has a boiling point higher than that of divinylbenzene;
- and
- condensing said reaction product gas.
A process for preparing divinylbenzene, comprising:
- dehydrogenating a reaction gas comprising diethylbenzene to form a reaction product gas comprising divinylbenzene;
- introducing said reaction product gas into a condenser;
- spraying a high-boiling oil and water inside said condenser such that said high-boiling oil and water contacts said reaction product gas, wherein said high-boiling oil has a boiling point higher than that of divinylbenzene;
- and
- condensing said reaction product gas.
Dependencies are inferred from the claim text.