Korea Research Institute of Chemical Technology

Korea Gas Corporation

Daelim Industrial Co., Ltd.

Korea National Oil Corporation

Sk Innovation Co., Ltd.

Hyundai Engineering Co. Ltd.

Other

Sk Energy Co., Ltd.

Kyungdong City Gas Co. Ltd.

Ki-Won Jun

Sang-Eon Park

Jong-Wook Bae

Yun-Jo Lee

Taek-Yong Song

Ri-Sang Choi

Young-Soon Baek

Young-Sam Oh

Hyun-Seog Roh

Seung-Moon Kim

Kyu-Wan Lee

Seung-Chan Baek

Jin S Yoo

Jeon Keun Oh

Kew Ho Lee

Suk-Hwan Kang

Jin Hwan Bang

Jin-Soo Hwang

Jo Yong Park

Myoung-Jae Choi

Eun-Kyung Shim

Sun Ju Park

David B Raju

Young-Ho Kim

Jae-Woo Kim

Jeong-Hwan Lee

Won-Ihl Cho

Kwang Jae Woo

Jong-Hyeok Oh

Hyo Jean Kim

The present invention relates to a process of preparing of a phosphorus-containing phosphorus-alumina support by a sol-gel method and a cobalt/phosphorus-alumina catalyst where cobalt is supported onto the phosphorus-alumina support as an active ingredient. The phosphorus-alumina support is prepared by a sol-gel method and has wide specific surface area with bimodal pore size distribution and high cobalt dispersion, thereby enabling to increase heat and mass transfer, stabilize the structure by modifying the surface property of alumina and decrease the deactivation rate due to the reduced oxidation of cobalt component during the F-T reaction. When Fischer-Tropsch reaction (F-T) is conducted on the catalyst, the catalyst maintains a superior thermal stability, inhibits the deactivation due to water generation during the F-T reaction and also causes relatively high conversion of carbon monoxide and stable selectivity of liquid hydrocarbons.

Preparing phosphorus containing alumina support by sol-gel method for Fischer-Tropsch synthesis and catalyst preparation thereof

The present invention relates to a continuous separation and discharge apparatus and method of solid catalysts and liquid products for Fischer-Tropsch synthesis reactions, and more particularly, to a continuous separation and discharge apparatus and method of solid catalysts and products for Fischer-Tropsch synthesis reactions involving the conversion of synthetic gas into synthetic oil, by which products of the Fischer-Tropsch synthesis including wax, as a long-chain hydrocarbon, can be stably obtained by continuously separating the products from a slurry comprising solid catalyst particles and the products using periodic pulses of a feeding gas and discharging the products through a lower portion of a reactor. Provided is a continuous separation and discharge apparatus of solid catalysts and products for Fischer-Tropsch synthesis reactions including: a level sensing device which is installed at an upper portion of a reactor and detects the slurry-level of reactants; a solid catalyst/product separation device and a discharge device which are installed at a lower portion of the reactor and separate and discharge liquid products from a mixed slurry in the reactor; and a control unit which receives a signal from the level sensing device to open and close the discharge device, wherein the separation device filters the solid catalysts, and the discharge device continuously discharges the products separated from the solid catalysts through the lower portion of the reactor by the amount of the synthesized products measured by a level sensing device.

Method and apparatus for the continuous separation and discharge of solid catalysts and products for Fischer-Tropsch synthesis reactions

Preparing phosphorus containing alumina support by sol-gel method for fischer-tropsch synthesis and catalyst preparation thereof

The present invention relates to a process for producing light olefins from a synthesis gas with significantly improved conversion and selectivity for C-Clight olefins in general and propylene in particular, as compared to a conventional process, through a sequential two-step process comprising preparing olefin compounds from a synthesis gas in the presence of an iron catalyst by the Fischer-Tropsch reaction followed by cracking the olefin compounds in the presence of a zeolite catalyst.

Process for producing light olefins from synthesis gas using dual sequential bed reactor

The present invention relates to a cobalt/phosphorus-alumina catalyst in which cobalt is supported as an active component on a phosphorus-alumina support wherein phosphorus is supported on alumina surface. With a bimodal pore structure of pores of relatively different pore sizes, the catalyst provides superior heat- and matter-transfer performance and excellent catalytic reactivity. Especially, when Fischer-Tropsch (F-T) reaction is performed using the catalyst, deactivation by the water produced during the F-T reaction is inhibited and, at the same time, the dispersion and reducing property of cobalt and other active component are improved. Therefore, the cobalt/phosphorus-alumina catalyst for F-T reaction in accordance with the present invention provides good carbon monoxide conversion and stable selectivity for liquid hydrocarbons.

Catalysts for fischer-tropsch synthesis on cobalt/phosphorus-aluminum oxide and preparation methods thereof

This invention relates to a catalyst for synthesis of dimethyl ether and its preparation methods. More specifically, this invention relates to a catalyst with improved formulation for a highly efficient synthesis of dimethyl ether via dehydration of methanol. These catalysts are composed of hydrophobic zeolites, cations selected from alkali metal, alkaline earth metal, or ammonium along with alumina, silica, or silica-alumina. The methods of manufacturing the catalyst of this invention include (a) combining hydrophobic zeolites and precursors of alkali or alkaline earth metal cations with pastes of inorganic binders (at least one selected from the group consisting of bohemites, silica sol, and clay) and calcining the mixture at high temperature; (b) combining particles, which are obtained by calcining the hydrophobic zeolites impregnated with precursors of alkali or alkaline earth metal cations, with pastes of inorganic binders (at least one selected from bohemites, silica sol, and clay) and calcining the mixture at high temperature; (c) combining hydrophobic zeolites with pastes of inorganic binders (at least one selected from the group consisting of bohemites, silica sol, and clay), calcining the mixture at high temperature, impregnating the calcined product with precursors of ammonium cations and calcining the mixture at high temperature. The catalysts of this invention provide significantly high yields of dimethyl ether because they do not result in the production of hydrocarbon side products and their high catalytic activities are maintained for a prolonged period of time.

Catalyst for dimethyl ether synthesis and its preparation methods

Disclosed is a plate type steam reformer comprising a plate type burner capable of heating a broad area of a reactor as a heat source, positioned on a bottom of the reformer; a reforming reactor requiring a relatively high temperature, positioned over the burner; a high temperature water gas shift reactor requiring a relatively moderate temperature, positioned over the reforming reactor; a low temperature water gas shift reactor requiring a relatively low temperature, positioned over the high temperature water gas shift reactor; and dividing plates positioned between the above three reactors and between the reforming reactor and the burner such that combustion exhaust gas produced in the burner supplies heat to the above reactors.

Plate type steam reformer

The compact steam reformer of the present invention integrally comprises a housing; a reforming reactor having an upper mixing compartment for mixing natural gas and steam and a lower compartment for accommodating a catalyst bed; a natural gas feeding coiled pipe through which natural gas is introduced while being heated; a steam generating coiled pipe in which pure water is converted to steam by the exhaust; a metal fiber burner for heating the reforming reactor; a high-temperature converter for primarily removing carbon monoxide from a synthetic gas; a low-temperature converter for secondarily reducing the carbon monoxide level of the synthetic gas; and a heat exchanger, provided between the high-temperature converter and the low-temperature converter, for cooling the gas effluent from the high-temperature converter.

Compact steam reformer

The present invention relates to a catalyst for preparing hydrocarbons of carbon dioxide and more particularly, the Fe&#x2014;Cu&#x2014;K/&#x3b3;&#x2014;AlOcatalyst prepared by impregnation which enables producing hydrocarbons in high yield for more than 2000 hours due to its excellent activity and stability.

Catalyst for preparing hydrocarbon

Modified &ominus;-alumina-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas

Process for preparing dimethyl ether from crude methanol

Modified &thgr;-Al2O3-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas

The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the to formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.

Method for preparing aromatic carboxylic acids from alkylaromatics by liquid-phase oxidation

The present invention provides a novel Fe-Pd catalyst prepared by impregnating, either together or respectively, an iron source compound and a palladium source compound onto a carrier selected from the group consisting of silica, alumina and silica-alumina, and drying and calcining said Fe-Pd impregnated carrier in a flow of air or H.sub.2 /N.sub.2 ; and a method for preparing a mixture of cyclohexanol and cyclohexanone by selectively oxidizing cyclohexane in a reaction medium provided with hydrogen and oxygen gases in the presence of said Fe-Pd catalyst.

Catalyst and method for preparing mixture of cyclohexanol and

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Daejeon, South Korea

Ki-Won Jun