Abstract:
The present invention relates to ionic liquid using an aromatic cation material for separating carbon dioxide and, more specifically, to ionic liquid which improves carbon dioxide absorption capacity, initial absorption rates, and reclaimable performance compared with existing ionic liquid. The ionic liquid of the present invention is selected among 1-methylimidazolium, 1-ethylimidazolium, and 1-butylimidazolium.
Abstract:
PURPOSE: A perovskite type mixed conductive oxygen separating film and a method for manufacturing the same are provided to improve the phase stability of the oxygen separation film regardless of the reduction gas and carbon dioxide atmosphere by replacing cobalt element with titanium element. CONSTITUTION: A method for manufacturing a perovskite type mixed conductive oxygen separating film includes the following: Ethylene glycol and citric acid are added in a metal nitrate solution containing titanium element in order to prepare a mixed solution(S110). The mixed solution is esterificated and is undergone a pyrolysis process in order to obtain synthesized powder(S120, S130). The synthesized powder is compression-molded to obtain an oxygen separating film, the composition of which is La_0.6Sr_0.4Ti_xFe_1-xO_3-δ(0.1
Abstract:
A carbon dioxide absorbent for a gas-liquid contactor in which potassium carbonate and an enhancer are mixed is provided to offer stabilization of physicochemical material property of a hollow fiber membrane by using a potassium carbonate absorbent. A carbon dioxide absorbent for a gas-liquid contactor includes 5-20 weight% of potassium carbonate and 5-15 weight% of annular amine. A gas-liquid contact system for separation of carbon dioxide includes an absorption reactor(420) and a degassing reactor(490). The absorption reactor absorbs the carbon dioxide from mixed gas.
Abstract:
A method refreshing an adsorber using pressure driving in a fuel reformer is provided to have a simple structure, to be easily operated and reduce consumption of renewable energy by reproducing an adsorber using pressure gradient at temperature same to fuel reformate reaction. A method refreshing an adsorber using pressure driving in a fuel reformer comprises steps of: i) generating hydrogen by injecting water and methane in a reactor 1(REA1), separating the generated carbon dioxide and reproducing the adsorber by maintaining pressure in a reactor 2(REA2) to 0.001~0.2 pressure(atm) and temperature same to the reactor 1; ii) recycling the adsorber by maintaining pressure to 0.001~0.2 pressure(atm) and temperature same to the reactor 2, generating the hydrogen by injecting water and methane in the reactor 2 and separating the generated carbon dioxide; iii) and performing repetitively the i) and the ii).
Abstract:
A unit reaction block that can obtain a high efficient chemical heat pump for cooling and heating by smoothly contacting an inorganic salt as a reaction medium with an ammonia gas as a drive medium in a chemical heat pump and efficiently transferring heat generated during the chemical reaction to the outside, a manufacturing method of the unit reaction block, and a mounting method of the unit reaction block on the chemical heat pump are provided. A thermal conductive unit reaction block for a chemical heat pump is characterized in that a supporting block is inserted between reaction blocks containing a metal chloride in surfaces thereof. The reaction blocks containing the metal chloride in the surfaces thereof are prepared a step(1) of mixing a therm conductive powder material with a binder, and compressing the mixture under high temperature and high pressure to obtain a compressed material, and a step(2) of applying a metal chloride as an adhesive onto a surface of the compressed material, and removing the adhesive. The metal chloride is at least one selected from ZnCl2, CuCl2, SnCl2, PbCl2, BaCl2, CaCl2, SrCl2, MnCl2, FeCl2, CoCl2, MgCl2, and NiCl2. A manufacturing method of a thermal conductive unit reaction block(13) for a chemical heat pump comprises inserting a supporting block(2) having a binder sprayed on the surface thereof between reaction blocks(1) containing a metal chloride in surfaces thereof, and compressing and drying the supporting block inserted between the reaction blocks.
Abstract:
A method of preparing a reactive medium comprising a carbon support impregnated with a metal catalyst and a method for removing NOx by using the reactive medium are provided to complement and replace the selective catalytic reduction process by directly reducing NOx exhausted from actual combustion flue gas by using an inexpensive metal impregnated carbon support without using a reducing agent such as ammonia. A method of preparing a reactive medium for NOx removal comprising a metal catalyst impregnated on a carbon support comprises: adding 47.37 to 49.75 wt.% of water into 0.5 to 5.26 wt.% of a metal catalyst to prepare an aqueous solution; adding 47.37 to 49.75 wt.% of a carbon support into the aqueous solution; and impregnating the carbon support with the aqueous solution in a rotary vacuum dryer by controlling an impregnation temperature to a range from 25 to 90 deg.C, controlling an impregnation speed to a range from 40 to 100 rpm, and controlling an impregnation pressure to a range from 500 to 700 mmHg. A method for removing NOx in an oxygen-free gas by using the reactive medium comprises removing NOx by controlling an injection flow rate of combustion flue gas to a range from 10,000 to 30,000 hr^-1, and controlling an operating temperature of 450 deg.C or more in a reactive medium comprising a carbon support impregnated with a metal catalyst.
Abstract:
A method and an apparatus for separating carbon dioxide produced when reacting hydrocarbon as a fossil fuel with water are provided to increase the separation efficiency of carbon dioxide using a solid moving type reactor and increase the production of hydrogen accordingly. In a carbon dioxide separating type apparatus for producing hydrogen, in which high purity hydrogen is continuously produced by hydrocarbon-steam reforming reaction using a reaction solid comprising a reforming catalyst and a carbon dioxide absorbent, the carbon dioxide separating type apparatus for producing hydrogen comprises: a hybrid reactor(120) for performing steam reforming reaction using hydrocarbons and separating carbon dioxide generated during the reforming reaction using an absorbent at the same time; a regeneration reactor(110) for desorbing carbon dioxide saturated in the absorbent; and a solid mover(130) for allowing a reaction solid to be easily moved from the regeneration reactor to the hybrid reactor, wherein the hybrid reactor has a solid injector(163) installed in an upper part thereof and a solid disusing tank(146b) installed in a lower part thereof to easily inject and disuse the reaction solid, the reforming catalyst is nickel, iron, or rhodium, the absorbent is calcium oxide, magnesium oxide, silicate lithium, or dolomite, and a mixing weight ratio of the reforming catalyst to a carbon dioxide absorbent is 1 to 15.
Abstract:
PURPOSE: To provide a method for manufacturing a carbon dioxide adsorbent that is capable of adsorbing and desorbing carbon dioxide and used for a long time at a high temperature of 700 deg.C or more by mixing carbide and subsidiary materials of inorganic binder and additive, adding seed and organic binder to the mixture and molding and firing the mixture. CONSTITUTION: The manufacturing method of carbon dioxide adsorbent usable at high temperature comprises: a step of mixing carbide with subsidiary materials; a step of molding the mixture after injecting seed and adding an organic binder to the mixture of carbide and subsidiary materials; and a step of firing the molded article after molding the mixture, wherein the carbide comprises 70 to 96 wt.% of calcium carbonate(CaCO3), wherein the subsidiary materials comprise 1 to 5 wt.% of a binder selected from bentonite, clay, montmorillonite, mica and kaolin, and 1 to 5 wt.% of a binder selected from feldspar, potassium fluoride(KF), sodium fluoride(NaF) and calcium fluoride(CaF2), wherein the subsidiary materials comprise 1 to 7 wt.% of a strength enhancer selected from calcium titanate, starch, gelatin and methyl cellulose, and 1 to 7 wt.% of a porosity improver selected from graphite, pearlite and vermiculite, wherein the seed is injected into the mixture while rotating a mixture of carbide and subsidiary materials at a rotational speed of 100 to 1,000 revolutions per minute, wherein the seed comprises 0.5 to 2% of metal particles selected from aluminum oxide(Al2O3), titanium oxide(TiO2) and cerium oxide(CeO2) for the weight of carbide, wherein the seed comprises 0.5 to 2% of inorganic particles selected from glass, ceramic and quartz for the weight of carbide, wherein the organic binder 2 to 10% of an aqueous solution to which 1 to 10 wt.% of one selected from polyvinyl alcohol, polyethylene oxide, polyethylene glycol and polyvinyl acetate is added for the weight of carbide, and wherein the firing is performed at a temperature of 900 to 1,100 deg.C.
Abstract:
PURPOSE: To provide a system for separating and recovering CO2, the system capable of easily performing temperature control and continuous operation of the reactor by using a conveyance reactor or fluidized bed reactor having a high flow rate as a reactor for recovering CO2. CONSTITUTION: The system for separating and recovering CO2 comprises: a recovery reactor(1) for recovering CO2 by contacting CO2-contained gas(11) supplied from the outside with a dry type solid absorbent; a cyclone number 1(3a) connected to the recovery reactor to exhaust gas and separate solid containing CO2 only; a fluidized bed reactor(2) for separating the solid into CO2 and a dry type solid absorbent using a fluidization gas(8) by receiving solid containing CO2 through a solid transfer pipe(7) comprising a loop chamber(5) connected to the cyclone number 1, and sending the separated dry type solid absorbent to the recovery reactor again through a transfer means; and a cyclone number 2(3b) for releasing CO2 separated from the fluidized bed reactor to the outside so that the separated CO2 is used.