Sk Gas Co., Ltd.

Korea Research Institute of Chemical Technology

Korea National University of Transportation Industry-academic Cooperation Foundation

Kocat Inc.

Ung Gi Hong

Deuk Soo Park

Won Choon Choi

Yong Ki Park

Miyoung Lee

Hawon Park

Daesung Park

Changyeol Song

Hyeongchan Ahn

Jung Ho Kim

Jin Sung Kim

Mi Young Lee

Eun Sang Kim

Byungjun Kang

Hae Bin Shin

Sungwon Kim

Sanghyeon Park

Chaeeun Yeo

Seo Hyun Shim

Su Jin Gong

Chang Hee Yang

A method for producing olefins using a circulating fluidized bed process, includes: supplying a propane-containing hydrocarbon mixture and a dehydrogenation catalyst into a riser, which is a fast fluidization regime, to cause a dehydrogenation reaction; separating, from a propylene mixture, the catalyst which is a product of the dehydrogenation reaction; removing unseparated hydrocarbon compounds remaining in the catalyst separated in the separating; continuously regenerating the catalyst by mixing the catalyst stripped in the removing with a gas containing oxygen; circulating the catalyst regenerated in the continuously regenerating to the supplying and resupplying it into the riser; and preparing propylene by cooling, compressing, and separating the propylene mixture which is a reaction product separated in the separating.

Method for producing olefins using novel catalyst and circulating fluidized bed process

Disclosed is a catalyst for producing an olefin including an oxygen carrier material and a dehydrogenation catalyst. The catalyst allows hydrogen to be converted into water by using oxygen inside the lattice of an oxide catalyst without the additional supply of oxygen, and thus, the conversion can be increased while the decrease in selectivity, which is a disadvantage of an additional oxidative dehydrogenation reaction (ODHP), is suppressed.

Catalyst for producing olefin, including oxygen carrier material and dehydrogenation catalyst

Disclosed is a catalyst for producing an olefin, the catalyst having an excellent conversion and excellent selectivity, and a method for preparing the catalyst. The catalyst for producing an olefin, according to the present invention, includes: a support including alumina and an auxiliary support component; a main catalyst including an active metal oxide supported on the support; and a co-catalyst including an oxide of an alkali metal and a Group 6B transition metal.

Catalyst having enhanced conversion and selectivity for manufacturing olefin, and manufacturing method therof

Provided is a method for using selective non-catalytic reduction to reduce nitrogen dioxide in exhaust gas generated during an olefin production process. Nitrogen dioxide generated in a catalyst regeneration step of a continuous PDH process can be efficiently removed by the method of the present disclosure. Ultimately, the generation of visible fumes can be prevented through the removal of nitrogen dioxide.

Method for reducing nitrogen dioxide in exhaust gas generated during olefin production process

Disclosed is a method of producing an olefin using a circulating fluidized bed process, including: (a) supplying a hydrocarbon mixture including propane and a dehydrogenation catalyst to a riser which is in a state of a fast fluidization regime, and thus inducing a dehydrogenation reaction; (b) separating an effluent from the dehydrogenation reaction into the catalyst and a propylene mixture; (c) stripping, in which a residual hydrocarbon compound is removed from the catalyst separated in step (b); (d) mixing the catalyst stripped in step (c) with a gas containing oxygen and thus continuously regenerating the catalyst; (e) circulating the catalyst regenerated in step (d) to step (a) and thus resupplying the catalyst to the riser; and (f) cooling, compressing, and separating the propylene mixture, which is a reaction product separated in step (b), and thus producing a propylene product.

Method of producing olefin using circulating fluidized bed process

Disclosed is a catalyst for producing the olefin. The catalyst includes a support including alumina and a sub-support component, and a metal oxide impregnated on the support. The metal oxide includes anyone selected from an oxide of chromium, vanadium, manganese, iron, cobalt, molybdenum, copper, zinc, cerium and nickel; and the sub-support component includes anyone selected from zirconium, zinc and platinum.

Catalyst for producing olefin, and continuous reaction-regeneration olefin producing method using the catalyst

Disclosed are a catalyst for producing olefin and a preparation method thereof. The catalyst for producing olefin includes: a support including an alumina and a sub-support component; and a catalytic component comprising a metal component and an alkali metal impregnated on the support. The preparation method includes: providing a support comprising a sub-support component and an alumina; preparing pre-catalyst by dipping a metal component oxide in the support and calcining it; and dipping a metal component oxide and an alkali metal oxide in the pre-catalyst and calcining it.

Catalyst for producing olefin having enhanced stability, conversion rate and selectivity, and preparation method thereof

Disclosed is an olefin production method including: pretreating a catalyst by providing reduction gas to an alumina type catalyst to produce olefin from the hydrocarbon including not less than 90 wt % of LPG (Stage 1); producing the olefin by providing the catalyst pretreated at Stage 1 into Riser of Fast Fluidization Regime to dehydrogenate the hydrocarbon (Stage 2); separating the mixture of the produced propylene and the catalyst used at Stage 2, and regenerating the separated catalyst (Stage 3); and recycling the catalyst regenerated at Stage 3 to the process of Stage 1 (Stage 4).

Olefin production method comprising reduction pretreatment

Disclosed is an olefin production method which includes: (a) providing the regenerated catalyst and the hydrocarbon including not less than 90 wt % of LPG into Riser of Fast Fluidization Regime, and dehydrogenating in the presence of an alumina type catalyst; (b) separating an effluent from the dehydrogenation reaction into the catalyst and propylene mixture; (c) stripping to remove the hydrocarbon compound included in the catalyst separated at stage (b); (d) mixing the catalyst stripped at stage (c) with the gas including oxygen, and continuously regenerating it; (e) recycling the catalyst regenerated at stage (d) to stage (a), and providing it again into Riser; and (f) producing propylene product by cooling, compressing and separating propylene mixture of the reaction product separated at stage (b).

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Seongnam-si, South Korea

Ung Gi Hong