Sk Innovation Co., Ltd.

Korea Institute of Energy Research

Sk Global Chemical Co., Ltd.

Jang Jae Lee

Dong Wook Kim

Sang Sup Han

Seong Jun Lee

Chang Hyun Ko

Hee Tae Beum

Jong Nam Kim

Jong Ho Park

Soon Haeng Cho

Tae Jin Kim

Seung Hoon Oh

Jae Suk Choi

Young Eun Cheon

Woo Sung Jung

A process and apparatus for separating an olefin from mixed gases containing light olefins is provided. The process includes adsorbing the olefin of an olefin-containing mixed gas in an adsorption column packed with an adsorbent selectively adsorbing the olefin; discharging gases other than the olefin through the outlet of the adsorption column; desorbing the adsorbed olefin by displacement using a desorbent, and separating the olefin from the desorbent, thereby producing a high-purity olefin. The apparatus includes adsorption columns packed with an adsorbent selectively adsorbing an olefin, and at least two distillation columns for separating an olefin/desorbent mixture and an olefin poor stream/desorbent into their components. If the olefin concentration of the off-gas from an olefin rinse step is higher than that of a raw material gas, recovering the olefin from the off-gas is carried out before or after the adsorption step.

Displacement desorption process for light olefin separation

A method and apparatus for concentrating and recovering ethylene from the off-gas from an apparatus which produces gasoline, propylene and the like by fluidized catalytic cracking (FCC) of heavy oils such as atmospheric residue, generated in a crude oil refining process, is provided. The method and apparatus can reduce the amount of ethylene rinse in the subsequent ethylene displacement desorption process by increasing the ethylene purity of a raw material gas and reducing the concentration of weakly adsorbing components in the raw material gas and can reduce the loss of a desorbent during a distillation process for separating the desorbent from the weakly adsorbing components. Thus, ethylene can be recovered from the off-gas from fluidized catalytic cracking of heavy oils at high concentration and low cost.

Method and apparatus for recovering ethylene from fluidized catalytic cracking (FCC) off-gas

Provided is a process for isolating a catalyst from a solution having a copolymer and a catalyst dissolved therein, after performing copolymerization with the catalyst. More specifically the invention provides selection and application of an adsorbent to be used for the isolation.

Adsorbents for the recovery of catalyst from block co-polymer process and method for regenerating of the same

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Seongnam-si, South Korea

Jang Jae Lee