Abstract:
본 발명은 페롭스카이트형 혼합전도성 산소분리막 및 그 제조방법에 관한 것으로, 더욱 상세하게는 종래의 BSCF 조성의 분리막에 LSTF 조성의 분리막을 코팅함으로써 산소 투과 특성 및 이산화탄소에 대한 내성이 향상된 LSTF-6437이 코팅된 BSCF-5582 산소분리막 및 그 제조방법에 관한 것이다. 본 발명에 따른 LSTF-6437이 코팅된 BSCF-5582 산소분리막은 BSCF-5582 분리막의 표면을 LSTF-6437 코팅액으로 코팅함으로써 산소투과 시 이산화탄소(CO 2 )에 의한 불순물 생성 반응을 억제하여 산소 투과량의 저하를 방지할 수 있으며 코팅 표면의 비표면적 증가에 따라 산소투과량을 증가시킬 수 있는 장점이 있다.
Abstract:
본 발명은 이산화탄소 흡수제에 관한 것으로, 더욱 상세하게는 알칼리 탄산염 물질에 입체장애(hindered) 시클릭 아민을 첨가함으로써 이산화탄소 흡수속도가 향상되고 재생에너지가 절감되며 염 생성 및 상분리가 발생되지 않도록 하는 입체장애 시클릭 아민이 첨가된 알칼리탄산염계 이산화탄소 흡수제 및 이를 이용한 이산화탄소 제거방법에 관한 것이다. 본 발명에 따른 알칼리염계 이산화탄소 흡수제에 의하면 낮은 재생에너지와 높은 이산화탄소 흡수속도로 인해 이산화탄소 포집비용을 절감할 수 있으며 염 생성 및 층 분리 현상이 발생하지 않아 흡수제를 보충할 필요가 없어서 공정효율을 정상상태로 유지할 수 있다는 장점이 있다. 이산화탄소 흡수제, 입체장애아민, 알칼리탄산염, 입체장애 시클릭 아민
Abstract:
The present invention relates to an ionic liquid-polymer gel membrane with improved gas permeability, and a preparation method thereof, and more specifically, to a membrane prepared to allow an ionic liquid to be dispersed in a polymer gel, thereby improving gas permeability. Particularly, the present invention relates to an ionic liquid-polymer gel membrane wherein membrane selectivity and permeability exceed an upper bound by increasing the amount of dispersed ionic liquid, and a preparation method thereof. The preparation method of the membrane for separating a specific gas from a mixture gas according to the present invention comprises the following steps of: mixing a polymer, an ionic liquid and PC as a solvent to prepare a mixture solution; and drying the mixture solution to remove the solvent from the mixture solution. In addition, the polymer is polyvinylidene fluoride-hexafluoropropyl copolymer (PVdF-HFP), and the ionic liquid is 1-ethyl-3-methylimidazolium tetrafluoroborate ([emim][BF4]).
Abstract:
PURPOSE: A carbon dioxide absorber using meso-porous materials and a carbon dioxide eliminating method using the same are provided to increase an area, to which carbon dioxide is absorbed, based on branches of polyethyleneimine. CONSTITUTION: A carbon dioxide absorber includes meso-porous materials and polyethyleneimine. The average molecular weight of the polyethyleneimine is between 450 and 650. The polyethyleneimine is immersed in the meso-porous materials. The meso-porous materials are MCM-41 or MCM-48. The absorber absorbs carbon dioxide at a temperature between 40 and 80 degrees Celsius. The immersing rate of the polyethyleneimine is M2/(M1+M2)x100 and is in a range between 25 and 35 wt%, between 45 and 55 wt%, or between 65 and 75 wt%. The M1 is the content of the meso-porous materials. The M2 is the content of polyethyleneimine.
Abstract:
PURPOSE: The carbon dioxide absorbing agent of imidasolium-based ionic liquid, a method for fabricating the same, and a method for absorbing carbon dioxide using the same are provided to reduce energy required for regenerating the absorbing agent by substituting imidazolium-based ionic liquid absorbing agent with alkaline salt to obtain the carbon dioxide absorbing agent. CONSTITUTION: Alkaline salt is added in ionic liquid. The ionic liquid is 1-butyl-3-methylimidazolium iodide using imidazolium as cation. The alkaline salt is selected from KHCO_3 or KOH. The alkaline salt added ionic liquid is stirred to obtain a carbon dioxide absorbing agent. A carbon dioxide absorbing process is implemented in a carbon dioxide absorbing performance measuring unit(10) at temperature between 35 and 45 degrees Celsius and the pressure more than or equal to 10bar.
Abstract:
Provided are a method of manufacturing a Perovskite-type ion conductive oxygen membrane having a hexahedral structure or rhombohedral structure instead of a simple cubic structure to obtain a high oxygen permeability, and a process of separating oxygen using the oxygen membrane. A method of manufacturing a Perovskite-type ion conductive oxygen membrane comprises: a first step of adding citric acid into a metal nitrate solution and dissolving distilled water into the metal nitrate solution to prepare a mixed solution; a second step of evaporating water of the mixed solution to dry the mixed solution; a third step of milling and calcining the dried mixture to prepare a synthesized powder; and a fourth step of compression molding the synthesized powder to manufacture a membrane. The membrane has a hexahedral structure or rhombohedral structure.
Abstract:
본 발명은 화석연료를 이용하여 메탄을 생산한 후, 수증기개질반응을 통한 수소를 생산하는 과정 중 생성된 이산화탄소를 분리하는 공정을 포함하는 연소전 탈탄소화방법에 관한 것으로, 3개의 반응기 RA, RB, RC로 구성되어 물(H 2 O)과 메탄(CH 4 )이 유입되어 이산화탄소(CO 2 )와 수소(H 2 )를 배출하는 과정에서 이산화탄소를 제거하는 연소전 탈탄소화방법에 있어서, (스텝1) RA는 혼성반응과정, RB는 온도조절과정, RC는 탈착과정; (스텝2) RA는 탈착과정, RB는 혼성반응과정, RC는 온도조절과정; 및 (스텝3) RA는 온도조절과정, RB는 탈착과정, RC는 혼성반응과정;을 포함하는 공정사이클로 구성되고, 상기의 혼성반응과정은 메탄과 물을 이용한 수증기개질반응과 흡착제를 이용하여 상기 수증기개질반응에서 생성된 이산화탄소를 흡착하는 흡착반응이 동시에 수행되도록 온도를 유지하는 과정이며, 상기 온도조절과정은 흡착제에 흡착된 이산화탄소를 탈착시키고 혼성반응으로 넘어가기 위하여 온도를 낮추는 과정이고, 상기 탈착과정은, 흡착제에 흡착된 이산화탄소를 탈착하기 위하여 온도를 탈착온도까지 높이는 과정인 것을 특징으로 하는 연소전 탈탄소화 방법이다. 흡착제, 이산화탄소, 탈탄소
Abstract:
PURPOSE: Provided is a method of making a glass fiber reinforced composite, for treatment of polluted and wastewater, which improves the formability of zeolite by simply heat treating and foaming process. The composite material maintains the existing excellent adsorption property yet is made with simple process and economically. CONSTITUTION: The treatment method comprises the steps of making a coating solvent mixture of zeolite and phenol resin by mixing them in a ratio of 1 : 1-3, grinding to 60-100mesh and stirring with ethanol, in a mixture of 1 : 0.5-1 phenol resin/zeolite to ethanol ratio, for 12 hours; dipping the glass fiber cut in a certain size in the above mixed solvent for 1-3 hours for liquid phase coating; drying at room temperature and vulcanizing and hardening the dried coated glass fiber in the electric furnace and heating at no more than 170deg.C in the mixed nitrogen gas atmosphere; and improving and activating process of the surface of the above vulcanized sample by heating at 500-700deg.C in gas atmosphere as well as enhancing the surface adsorption property by treating it with ammonia and carbon dioxide at the final temperature.
Abstract:
PURPOSE: A method for manufacturing phillipsite zeolite using fly ash is provided to remove ammonia nitrogen from wastewater. Furthermore, it can be used for drying, deodorization, ion exchange and soil degradation material as well as the material of cation inorganic exchange to remove heavy metal. CONSTITUTION: The manufacture method of phillipsite zeolite using fly ash includes (i) the pretreatment step of flying ashes using acid; (ii) the reaction step of flying ashes with alkaline solution; (iii) filtration and drying step.