Sk Innovation Co., Ltd.

Sk Global Chemical Co., Ltd.

Hansbiomed Corp.

Dae Sung Song

Sang Il Lee

Ji Hoon Lee

Yeon Ho Kim

Sung Bum Park

Kyung Jong Oh

Woong Chul Shin

Tae Jun Kim

Hee Du Lee

Byung Gwan Kim

The present disclosure provides a process for effectively separating and removing by-products (light gas, C5-C6 hydrocarbon oil fraction, polyethylbenzene) contained in a substantial amount in addition to ethylbenzene as a target compound in an alkylation reaction product of a fluidized catalytic cracking off-gas to prepare ethylbenzene having high purity, and process economical efficiency may be secured by utilizing the polyethylbenzene as an absorbent or gasoline fraction, without requiring a transalkylation reaction for further producing ethylbenzene from polyethylbenzene.

Method for recovering ethylbenzene from alkylation product of fluidized catalytic cracking off-gas and benzene

Disclosed is a method of efficiently separating 1,3-butadiene and methylethylketone, which are compounds of interest, from byproducts or impurities in the dehydration products of 2,3-butanediol so as to recover the compounds of interest at high purity.

Method of recovering 1,3-butadiene and methylethylketone from dehydration products of 2,3-butanediol

Disclosed is a method of preparing 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol, including: a) providing a plurality of adiabatic reactors, which include a catalyst bed for dehydrating 2,3-butanediol, without a heat transfer medium, and are connected in series; b) introducing a stream including 2,3-butanediol at a temperature ranging from 200&#xb0; C. to 400&#xb0; C. into a first adiabatic reactor among the plurality of adiabatic reactors; c) dehydrating the 2,3-butanediol so as to be converted into 1,3-butadiene and methyl ethyl ketone and discharging a product stream including 1,3-butadiene and methyl ethyl ketone; d) heating the discharged product stream to to 200&#xb0; C. to 400&#xb0; C.; and e) introducing the heated product stream into a second adiabatic reactor so that 2,3-butanediol is further dehydrated and converted into 1,3-butadiene and methyl ethyl ketone and then discharging the product stream including 1,3-butadiene and methyl ethyl ketone.

Method of preparing 1,3-butadiene and methyl ethyl ketone from 2,3-butanediol using adiabatic reactor

Growing community of inventors

Daejeon, South Korea

Dae Sung Song