Korea Institute of Energy Research

Sk Energy Co., Ltd.

Other

Jong-Nam Kim

Soon-Haeng Cho

Jong-Ho Park

Hee Tae Beum

Sang Sup Han

Chang Hyun Ko

Sang-Sup Han

Min-Su Ko

Jongkee Park

Seong-Jun Lee

Hee-Tae Beum

Kuck-Tack Chue

Hyung Chul Yoon

Venkateswarlu Choudary Nettem

Ji-haeng Yu

Seong-Pil Kang

Chung-yul Yoo

Taesung Jung

Kanghee Cho

Jong Hoon Joo

Jong-Kee Park

Chang-Hyun Ko

Dong-woo Cho

Kisub Kim

Hyung-chul Yoon

Tae Sung Jung

Jung-Il Yang

Su Jin Jeong

Young Tae Guahk

Kwon-Il Kim

Youn-Jong You

Seng-Go Lee

Jeong-Geol Na

Kwang-Bok Yi

Sung-Youl Park

Bo-Eun Yi

Kumar Brakash

The present invention provides a method for inhibiting structure II (sII) gas hydrate formation which comprises treating (i) a gas hydrate inhibitor and (ii) at least one additive selected from the group consisting of N-hexyl-N-methyl-pyrrolidinium tetrafluoroborate (HMP-BF), M-hydroxyethyl-N-methyl-pyrrolidinium tetrafluoroborate (HEMP-BF), N-ethyl-N-methyl-immidazolium tetrafluoroborate (EMIM-BF) and N-ethyl-N-methyl-pyrrolidinium tetrafluoroborate (EMP-BF) in water, which is in contact with a gas mixture of forming structure II gas hydrate. The additives according to the present invention can exhibit the same or greater effects of inhibiting the formation of the structure II gas hydrate through an interaction, even when the amount of a gas hydrate inhibitor is reduced.

Method for inhibiting structure II gas hydrate formation

The present disclosure relates to an ammonia synthesis apparatus, and more particularly, to an electrochemical ammonia synthesis apparatus using an aqueous solution or a molten liquid of an alkali metal as an electrolyte. According to one or more embodiments, when an aqueous solution or a molten liquid of an alkali metal is used as an electrolyte in an ammonia synthesis apparatus, compositions, sizes, and shapes of an electrode and an electrolyte may be easily controlled, and thus a yield of ammonia synthesis may improve.

Apparatus for synthesizing ammonia

Disclosed is a method of removing calcium from a hydrocarbon fraction using an extraction agent including 2-oxopropanal or derivatives thereof, the method including (S1) adding a hydrocarbon fraction with an extraction agent including 2-oxopropanal or derivatives thereof to give a mixture, (S2) converting an oil-soluble calcium compound into a water-soluble calcium compound by reacting the hydrocarbon fraction with the 2-oxopropanal or derivatives thereof, and (S3) removing the water-soluble calcium compound.

Method of removing calcium from hydrocarbon fraction using extraction agent including 2-oxopropanol or derivatives thereof

Provided are a continuous oxygen adsorption and desorption device and an continuous oxygen adsorption and desorption method using the device, and more particularly, an continuous oxygen adsorption and desorption device for producing high-purity oxygen products by using a plurality of adsorption and desorption towers filled with an oxygen-selecting adsorption and desorption agent selected from BaMg(CO)particles or particles in which either MgCOor Mg(OH)has been attached to the outside of BaMg(CO), and also a continuous oxygen adsorption and desorption method using the device.

Continuous oxygen production method and continuous oxygen adsorption and desorption device using oxygen adsorbing agent

A hybrid process comprising an adsorption process and a distillation process for the separation of butene-1 from a C4 hydrocarbon mixture gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The hybrid process comprises introducing a gaseous C4 mixture into the adsorption tower loaded with adsorbents which adsorb olefins selectively to discharge C4 paraffins to the outlet of the tower, desorbing C4 olefins selectively adsorbed in the adsortion tower to produce high purity C4 olefins mixture gas in which isobutane and normal butane was removed, and separating the high C4 olefins mixture gas (a mixture of butene-1, trans-2-butene, cis-2-butene, and a trace amount of C4 paraffins) via distinction to obtain high purity butene-1 including a trace amount of isobutane in the top of the distillation tower and obtain a mixture gas including trans-2-butene, cis-2-butene and a trace amount of normal butane in the bottom of the tower.

Production of high purity butene-1 from C4 olefins/paraffins mixed gas

A method and apparatus for the separation of C4 olefins (butene-1, trans-2-butene, cis-2-butene, etc.) and C4 paraffins (normal butane, isobutane, etc) from a C4 hydrocarbon mixed gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. is provided. The apparatus includes several adsorption towers loaded with an adsorbent which selectively adsorb olefins and two distillation towers for the separation of the mixture gases of olefins/desorbents and paraffins/desorbents respectively. The basic operating process of the adsorption tower comprises an adsorption step of selectively adsorbing C4 olefin from the feeding mixture, a C4 olefin rinse step of removing a small amount of C4 paraffins adsorbed together with C4 olefins, and a desorption step of desorbing C4 olefins by using a desorbent, and further comprises pressure equalization step, concurrent depressurization step, and accumulation pressure step to increase the yield and concentration of olefins depending on the operation pressure of the adsorption tower.

Separation of olefins from olefins/paraffins mixed gas

The present invention relates to a method in which a catalytic reaction is used in order to produce hydrocarbons from renewable starting material derived from biological organisms such as vegetable lipids, animal lipids, and lipids extracted from macroalgae and microalgae, and more specifically relates to a method for selectively making a hydrocarbon, which is suitable for making gasoline or diesel, by removing the oxygen contained in the starting material without consuming hydrogen. In the present invention, the production takes place by bringing the starting material into contact with hydrotalcite, which constitutes a catalyst, thereby removing oxygen via a decarboxylation or decarbonylation reaction; and the starting material is one or more such material selected from triglycerides, fatty acids, and fatty acid derivatives obtained from a renewable source of supply originating from a biological organism.

Method for making hydrocarbons by using a lipid derived from a biological organism and hydrotalcite

The present invention relates to a method for the separation of Colefins and Cparaffins from a Chydrocarbon mixed gas including butene-1, trans-2- butene, cis-2-butene, normal butane, isobutane, etc. The method of the present invention produces Colefins with high purity by introducing a gaseous Cmixture into the adsorption tower loaded with adsorbent selectively adsorbing olefins to adsorb Colefins and to discharge Cparaffins to the outlet of the tower, desorbing Colefins adsorbed on the adsorption tower with a desorbent Chydrocarbon, Chydrocarbon, etc.), and then separating the Colefin and the desorbent by a distillation process.

The present invention relates to a hybrid process comprising an adsorption process and a distillation process for the separation of butene-1 from a C4 hydrocarbon mixture gas including butene-1, trans-2-butene, cis-2-butene, normal butane, isobutane, etc. The above hybrid process comprises introducing a gaseous C4 mixture into the adsorption tower loaded with adsorbents which adsorb olefins selectively to discharge C4 paraffins to the outlet of the tower, desorbing C4 olefins selectively adsorbed in the adsorption tower to produce high purity C4 olefins mixture gas in which isobutane and normal butane was removed, and separating the high C4 olefins mixture gas (a mixture of butene-1, trans-2-butene, cis-2-butene, and a trace amount of C4 paraffins) via distillation to obtain high purity butene-1 including a trace amount of isobutane in the top of the distillation tower and obtain a mixture gas including trans-2-butene, cis-2-butene and a trace amount of normal butane in the bottom of the tower.

Adsorbents useful in the selective adsorption of unsaturated hydrocarbons, the manufacture of the adsorbents, and processes for the separation of unsaturated hydrocarbons using the adsorbents.

Adsorbents and methods for the separation of ethylene and propylene and/or unsaturated hydrocarbons from mixed gases

A high purity isobutane adsorption separation and purification apparatus is provided including a pressure regulator which regulates the pressure of an isobutane-containing gas; the at least one adsorption bed packed with zeolite 5A and carbon molecular sieve arranged downstream of and operatively associated with the pressure regulator; a flow control valve disposed between the pressure regulator and the at least one adsorption bed; a surge tank operatively associated with and for receiving a purified isobutane product from the at least one adsorption bed; a vacuum pump operatively associated with and for removal of impurities from the at least one adsorption bed; and valves disposed between the pressure regulator and the at least one adsorption bed, between the at least one adsorption bed and the surge tank, and between the at least one adsorption bed and the vacuum pump. An adsorptive separation and isobutane purification process is also provided which may be used with the apparatus of the invention.

Adsorption separation and purification apparatus and process for high

A method for recovering argon and hydrogen simultaneously from a feed mixture comprising argon, hydrogen, methane, nitrogen, ammonia, and moisture by passing a two stage adsorption separation (PSA). The feed gas including 4-6% hydrogen is sent to the first stage PSA to obtain a product hydrogen during the first period of adsorption step, and to obtain an intermediate product of argon and hydrogen mixture during the next period of adsorption step. The adsorbed gases are evacuated and sent to fuel gas. The intermediate product argon and hydrogen mixture is sent to the second stage adsorption bed. The effluent of adsorption step is recovered as another product hydrogen. After the adsorption step, the second stage adsorber is undergone concurrent blowdown, pressure equalization, argon recovery, argon purge, desorption production of argon, pressure equalization, pressurization with product hydrogen. Through such cyclic operation of two-stage PSA, high purity argon and hydrogen are recovered simultaneously.

Method for adsorbing and separating argon and hydrogen gases in high

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Daejeon, South Korea

Jong-Nam Kim