Patent application number | Description | Published |
20080197051 | Desulfurizing Agent for Removing Organic Sulfur Compounds, Preparation Method thereof and Method for Removing Organic Sulfur Compounds Using the Same - Disclosed herein are a desulfurizing agent for removing organic sulfur compounds, a preparation method thereof, and a method for removing organic sulfur compounds using the same. The desulfurizing agent consists of a copper-zinc-aluminum complex free of alkaline metal, with a large surface area. When being contacted with organic sulfur compounds, such as t-butylmercaptan, tetrahydrothiophene, dimethylsulfide, etc., the desulfurizing agent exhibits excellent desulfurization ability and is not de-graded especially at high temperatures as high as 150˜350° C. | 08-21-2008 |
20090023958 | Process for preparing dimethyl ether from crude methanol in an adiabatic reactor - The present invention relates a process for preparing dimethyl ether from crude methanol in an adiabatic reactor(s)/and more particularly to a process for preparing dimethyl ether wherein crude methanol containing water is dehydrated by using ( | 01-22-2009 |
20090104108 | Method of Preparing Boehmite and Gamma-Alumina With High Surface Area - The present invention relates to a method for preparing boehmite and γ-alumina with high surface area, and more particularly, to a method comprising hydrolysis of aluminum alkoxides to produce boehmite and calcination to produce γ-alumina, wherein an alcohol is used as a reaction solvent and a small amount of water and a particular organic carboxylic acid are added so that not only the reaction solvent is easily recovered and energy required for drying is significantly reduced but also it provides boehmite having nano-sized particles, high surface area, and high purity. Further, the prepared γ-alumina may be suitable for high value added industrial applications such as manufacture of adsorbents, catalysts, catalyst supports and chromatography materials. | 04-23-2009 |
20100093523 | CATALYSTS FOR FISCHER-TROPSCH SYNTHESIS ON COBALT/PHOSPHORUS-ALUMINUM OXIDE AND PREPARATION METHODS THEREOF - 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. | 04-15-2010 |
20100130349 | PREPARING PHOSPHORUS CONTAINING ALUMINA SUPPORT BY SOL-GEL METHOD FOR FISCHER-TROPSCH SYNTHESIS AND CATALYST PREPARATION THEREOF - 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. | 05-27-2010 |
20100261940 | PROCESS FOR PRODUCING LIGHT OLEFINS FROM SYNTHESIS GAS USING DUAL SEQUENTIAL BED REACTOR - The present invention relates to a process for producing light olefins from a synthesis gas with significantly improved conversion and selectivity for C | 10-14-2010 |
20110015062 | COBALT/ZIRCONIUM-PHOSPHORUS/SILICA CATALYST FOR FISCHER-TROPSCH SYNTHESIS AND METHOD OF PREPARING THE SAME - The present invention relates to a cobalt/zirconium-phosphorus/silica catalyst in which cobalt, as an active ingredient, is impregnated on a zirconium-phosphorus/silica support prepared by treating the surface of silica with zirconium and phosphorus, and a method of preparing the catalyst. The catalyst has excellent reactivity since it has excellent heat and mass transfer properties due to a large pore structure of silica and increased reducibility of cobalt; excellent dispersion of cobalt and other activation substances during Fischer-Tropsch (F-T) reaction; and reduced sintering of cobalt particles during the reaction, and thus high CO conversion and stable selectivity for liquid hydrocarbon can be obtained during the F-T reaction. | 01-20-2011 |
20110028574 | Method and Apparatus for the Continuous Separation and Discharge of Solid Catalysts and Products for Fischer-Tropsch Synthesis Reactions - 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. | 02-03-2011 |
20110114892 | CATALYST FOR PREPARING SYNTHESIS GAS FROM NATURAL GAS AND CARBON DIOXIDE, AND PREPARATION METHOD THEREOF - Disclosed are a catalyst for preparing synthesis gas from natural gas and carbon dioxide, and a method for preparing the same. More particularly, a combined reforming process is performed as an economical way of using carbon dioxide, wherein steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane in such a manner that a predetermined ratio of carbon monoxide/carbon dioxide/hydrogen (H | 05-19-2011 |
20110118367 | CATALYST FOR SYNTHESIZING METHANOL FROM SYNTHESIS GAS AND PREPARATION METHOD THEREOF - Disclosed are a catalyst for synthesis of methanol from synthesis gas and a method for preparing the same. The catalyst includes a Cu—Zn—Al oxide containing CuO, ZnO and Al | 05-19-2011 |
20110178186 | Preparation Methods for Liquid Hydrocarbons by Fischer-Tropsch Synthesis Through Slurry Reaction - The present invention relates to a method for preparing liquid hydrocarbons via a slurry phase Fischer-Tropsch (F-T) synthesis. In particular, the present invention relates to a method for preparing liquid hydrocarbons from syngas via slurry phase F-T synthesis using a catalyst, which can prevent the decrease in catalyst activity and filter clogging due to catalyst aggrega-tion, simultaneously with improving selectivity for C | 07-21-2011 |
20110237689 | METHOD FOR METHANOL SYNTHESIS USING SYNTHESIS GAS GENERATED BY COMBINED REFORMING OF NATURAL GAS WITH CARBON DIOXIDE - Disclosed is a method for methanol synthesis using synthesis gas obtained from reforming of natural gas with carbon dioxide. First, synthesis gas is obtained from steam carbon dioxide reforming of methane, in which steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane, by using a catalyst (Ni/Ce/MgAlO | 09-29-2011 |
20130171040 | REACTION DEVICE FOR PRODUCING HYDROCARBONS FROM SYNTHESIS GAS - Disclosed is a reaction device for producing hydrocarbons from synthesis gas, in which hydrocarbons, olefins, oxygenates, etc., are produced over a Fischer-Tropsch catalyst by using synthesis gas, so that catalyst particles can easily be from a slurry which is discharged to the outside. That is, the present invention provides a reaction device for producing hydrocarbons from synthesis gas, in which an internal filter system for separating particles enlarged due to a agglomeration phenomenon of a catalyst is installed inside the reactor, and an separating device is separately disposed outside, such that it is possible to recirculate only particles having a size appropriate for performing F-T synthesis in the slurry phase, and additionally, it is possible to effectively discharge and process a catalyst aggregated due to a combination of fine catalyst particles, the catalyst chipped off during the operation, etc., liquid hydrocarbon, resulting water, etc., in the slurry phase reactor. | 07-04-2013 |
20140038813 | CATALYST FOR FISCHER-TROPSCH SYNTHESIS HAVING EXCELLENT HEAT TRANSFER CAPABILITY - The present invention relates to a catalyst for Fischer-Tropsch synthesis which has excellent heat transfer capability. This catalyst contains (1) central core particle or particles made of a heat transfer material (HTM) selected from the group consisting of a metal, a metal oxide, a ceramic, and a mixture thereof; and (2) outer particle layer which surrounds the central core particles and is attached to the surfaces of the central core particles by a binder material layer. The outer particle layer has a support and catalyst particles in a powder form containing metal particles disposed on the support. The catalyst having such a dual particle structure shows excellent heat transfer capability and, thus, exhibits high selectivity to a target hydrocarbon. Therefore, the catalyst of the present invention is useful in a fixed-bed reactor for Fischer-Tropsch synthesis for producing hydrocarbons from synthetic gas. | 02-06-2014 |
20140044614 | REACTOR SYSTEM FOR PRODUCING HYDROCARBONS FROM SYNTHETIC GAS - The invention relates to a reactor system, comprising a heat-exchange unit and a reaction unit that are assembled together into a structure. The heat-exchange unit has a plurality of plate or corrugated-plate heat exchangers, and is formed so as to attachable/detachable to/from the reaction unit and insertable into the latter. Accordingly, a catalyst may be attached to a heat-transfer surface of a heat exchanger by a washcoat method or the like, thus maximizing heat-transfer efficiency and enabling the easy removal or reattachment of the catalyst when the enabling the easy removal or reattachment of the catalyst at the end of the lifespan of the catalyst. | 02-13-2014 |
20140056805 | METHOD FOR PREPARATION OF MESOPOROUS ZEOLITES - The provided is a preparation method of a mesoporous zeolite, particularly a method for preparing mesoporous zeolite through a simple process without using costly materials such as an organic amine template or a surfactant. | 02-27-2014 |
20140057780 | PREPARING PHOSPHORUS CONTAINING ALUMINA SUPPORT BY SOL-GEL METHOD FOR FISCHER-TROPSCH SYNTHESIS AND CATALYST PREPARATION THEREOF - 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. | 02-27-2014 |
20150018438 | CATALYST ACTIVATION METHOD FOR FISCHER-TROPSCH SYNTHESIS - The present invention relates to: a catalyst activation method for Fischer-Tropsch synthesis; a catalyst regeneration method for Fischer-Tropsch synthesis; and a method for producing a liquid or solid hydrocarbon by using the Fischer-Tropsch synthesis reaction. The temperatures required for a metal carbide producing and activating reaction is markedly lower than existing catalyst activation temperatures, and the catalyst can be activated under conditions that are the same as Fischer-Tropsch synthesis reaction conditions, and thus there is no need for separate reduction equipment in the reactor, and a Fischer-Tropsch synthesis catalyst which has been used for a long time can be regenerated within the reactor without the catalyst being isolated or extracted from the reactor. | 01-15-2015 |