Abstract:
본 발명은 금속 카바이드계 메탄 리포밍 촉매 제조방법 및 그 방법에 의해 제조된 메탄 리포밍 촉매에 관한 것으로서, 보다 상세하게는 금속 카바이드계 메탄 리포밍 촉매 제조방법에 있어서, 물에, Mo전구체, Ni전구체 및 다공성 탄소물질을 혼합하여 현탁액을 제조하는 단계; 상기 현탁액의 pH를 조절하는 단계; 상기 pH조절된 현탁액를 교반하여 다공성 탄소물질에 Mo전구체 및 Ni전구체를 흡착하는 단계; 상기 다공성 탄소물질에 Mo전구체 및 Ni전구체가 흡착된 현탁액을 여과하여 촉매 전구체를 회수 및 건조하는 단계; 상기 회수 및 건조된 촉매 전구체를 소성하는 단계; 및 상기 소성된 촉매 전구체를 침탄하는 단계;를 포함하여 이루어진다.
Abstract:
The present invention relates to a method for separating carbon dioxide from mixed gas containing the carbon dioxide and, more particularly, to a method for using an amino silane group as a mixed solvent in a carbon dioxide separation apparatus including an absorption tower and a stripping tower. The method for separating carbon dioxide using the mixed solvent of the present invention includes: a step in which a carbon dioxide-mixed solvent is supplied to an upper portion of the absorption tower and the mixed gas containing carbon dioxide is introduced to a lower portion of the absorption tower so that the carbon dioxide contained in the mixed gas is absorbed into the mixed solvent; a step in which the mixed solvent into which the carbon dioxide is absorbed is sent to a re-evaporation tank (flash tank) and the carbon dioxide is stripped by pressure difference; and a step in which the mixed solvent which passes through the re-evaporation tank is sent to the stripping tower and is heated to strip the carbon dioxide. In the method for separating carbon dioxide, an amino silane-based mixed solvent is used as the mixed solvent. The amino silane solvent of the present invention has a higher carbon dioxide absorption performance and removal efficiency than existing commercial solvents, and thus capturing costs can be saved in process application. In addition, the low volatility results in excellent safety and economic feasibility in a process operation.
Abstract:
The present invention relates to a method for calculating regenerative heat of a chemical absorbent for carbon dioxide. The regenerative energy of a chemical absorbent for carbon dioxide is calculated by obtaining and calculating parameters using a device in a short term instead of obtaining test values of the regenerative energy of a chemical absorbent for carbon dioxide via process operation, calculating the current heat of the absorbent from the result of measuring reaction heat and specific heat of the absorbent in the process of measuring a combustion phenomenon before and after the reaction of the absorbent for carbon dioxide, calculating the latent heat for evaporation of a solvent, and summing all the values. The method for calculating regenerative heat of an absorbent for carbon dioxide from the sum of the latent heat for evaporation, the reaction heat for absorption and the current heat comprises the steps of: calculating the latent heat for evaporation of the absorbent for carbon dioxide; measuring the reaction heat for absorption of the absorbent for carbon dioxide; and calculating the specific heat of carbon dioxide before and after reaction in the process of measuring the heat capacity before reaction of the absorbent for carbon dioxide and the heat capacity after reaction of the absorbent for carbon dioxide in a state of being completely saturated with carbon dioxide, and calculating the current heat therefrom.
Abstract:
Disclosed are an ether-functionalized immidazolium-based ionic liquid and a separating method of carbon dioxide using the same. The ether-functionalized imidazolium-based ionic liquid has excellent carbon dioxide absorbing ability. The absorbed carbon dioxide is easily attached and detached by heating, so the ether-functionalized imidazolium-based ionic liquid has user convenience, selectivity, thermal stability, and long lifetime, thereby being useful for collecting CO2.
Abstract:
본 발명은 이산화탄소 흡수 방법에 관한 것으로서, 이산화탄소 흡수공정에서 염의 생성을 최소화하고, 발생된 염을 효과적으로 제거함으로써 재생에너지를 최소화할 수 있는 이산화탄소 흡수 공정에 관한 것이다. 본 발명의 이산화탄소 흡수 공정은 알칼리탄산염에 입체장애 시클릭 아민이 첨가된 이산화탄소 흡수제에 이산화탄소가 포함된 기체를 접촉시키는 기체 접촉단계; 상기 기체로부터 이산화탄소를 흡수하는 이산화탄소 흡수단계; 상기 이산화탄소가 흡수된 흡수제에서 염을 분리하는 공정; 상기 염이 분리된 흡수제를 재생하는 단계를 포함한다.
Abstract:
본원은 La 1-x Sr x Ti 1-y Fe y O 3-δ 로 코팅된 Ba 1-x Sr x Co 1-y Fe y O 3-δ 의 조성을 갖는 이온전도성 산소분리용 분리막 및 이의 제조방법을 제공한다. La 1-x Sr x Ti 1-y Fe y O 3-δ 로 보호 코팅된 본원의 Ba 1-x Sr x Co 1-y Fe y O 3-δ 분리막은 코팅되지 않은 분리막과 비교하여 현저히 향상된 산소투과도 및 열적 안정성을 가져 이산화탄소를 함유하는 공기로부터 산소 분리 등에 유용하게 사용될 수 있다.
Abstract:
PURPOSE: A method for synthesizing sulfonate-based ionic liquid for separating carbon dioxide is provided to prepare 1-(2-methoxyethyl)-3-methylimidazolnium methanesulfonate and to ensure a stable physical property. CONSTITUTION: A method for synthesizing 1-(2-methoxyethyl)-3-methylimidazolnium methansulfonate ionic liquid comprises: a step of adding 2-methoxyethy methanesulfonate and 1-methylimidazole in a beaker, injecting dichloromethane as a solvent, and stirring at 50-70 deg. C. and 200-250 rpm for 25-35 hours; a step of removing unreacted materials and the solvent and collecting a synthesized solution; and a step of purifying the synthesized solution. The collection step comprises a step of removing the solvent by decompression; a step of repetitively washing the solvent-removed solution using ethyl acetate; and a step of removing the washing solution and collecting the synthesized solution. [Reference numerals] (AA) Step of stirring 2-methoxyethy methanesulfonate and 1-methylimidazole by injecting a solvent; (BB) Step of collecting a synthesized solution by removing the solvent and unreacted materials; (CC) Step of purifying the synthesized solution by filtering with a filter; (DD) Step of drying by removing residual moisture