Abstract:
본 발명은 SOFC 스택을 대용량화하고 고효율로 운전할 수 있도록 개질기와 연계운전을 통해 연료 공급의 위험 부담을 감소시킬 수 있으며 SOFC 스택의 성능을 향상시킬 수 있는 SOFC 스택-가스터빈 하이브리드 발전시스템의 가압 운전 방법 및 이에 사용되는 개질기 연계 SOFC 스택에 관한 것이다.
Abstract:
The present invention relates to a method for manufacturing an iron based catalyst comprising: a precipitate forming step of forming a precipitate by mixing a first solution in which a solution including at least one among iron ore fine particles, copper, cobalt, manganese, nickel, ruthenium, rhodium, rhenium, iridium, platinum or gold nitrate and an iron nitrate solution, at least one oxide among silicon oxide, aluminum oxide, zirconium oxide or chrome oxide or a precursor thereof and at least one second solution among an alkali metal carbonate aqueous solution, an alkaline-earth metal carbonate aqueous solution or an ammonia aqueous solution; and a plasticizing step of drying and plasticizing the precipitate. The present invention is able to manufacture the iron based catalyst which exhibits excellent performance while being environmentally friendly by reducing water consumption and pollutant emission since water and iron nitrate consumption is able to be reduced 20% or more as compared with a method for manufacturing an existing iron based catalyst.
Abstract:
The present invention relates to a method for manufacturing an iron-carbide/silica nanocomposite catalyst for Fischer-Tropsch synthesis, to a catalyst thereof, to a method for synthesizing liquid hydrocarbon using the same, and to liquid hydrocarbon thereof. Provided are an iron-carbide/silica catalyst for Fischer-Tropsch synthesis, in which an iron-silicate structure having large specific surface area and having well developed pores is first formed by a hydrothermal reaction of silica particles with a nanostructure and an iron salt, and the same is activated in the presence of high temperature carbon monoxide to have high reactivity for Fischer-Tropsch synthesis, and a method for manufacturing the same. And provided are a method for effectively manufacturing liquid hydrocarbon based on high CO conversion ratio and selectivity by Fischer-Tropsch synthesis using the manufactured iron-carbide/silica composite catalyst, and liquid hydrocarbon thereof.
Abstract:
본 발명은 동시 용융함침에 의한 혼성 합금 촉매 담지체 제조 방법 및 그 합금 촉매 담지체에 관한 것으로, 그 목적은 담지 하고자 하는 금속염들을 기계적으로 동시 혼합 후, 혼합된 금속염을 녹여 다공성 지지체에 함침시켜 합금입자가 담지된 촉매 담지체들을 쉽고 빠르게 제조할 수 있는 동시 용융함침에 의한 혼성 합금 촉매 담지체 제조 방법 및 그 합금 촉매 담지체를 제공하는데 있다. 본 발명의 구성은 a) 둘 이상의 금속염들과 다공성 지지체 간의 혼합단계와; b) 공동 용융함침에 의한 금속염들 간의 융합단계와; c) 고온 소성과정을 통해 다공성 지지체 내 금속염들을 합금화 시키는 단계;를 포함하는 동시 용융함침에 의한 혼성 합금 촉매 담지체 제조 방법 및 그 합금촉매 담지체를 발명의 특징으로 한다.
Abstract:
본 발명은 동적 기체분배기 및 그를 적용한 기포탑 반응기에 관한 것으로, 합성가스의 기포입자를 균일하게 전환시킴은 물론, 기포입자의 후단에 생기는 웨이크(wake:교란된 공기의 흐름)에 의해 기포기둥이 발생되는 현상을 억제하여 반응기본체 내에서의 반응효율을 증진시키기 위한 것이다. 본 발명에 따른 기포탑 반응기는 반응기본체와 동적 기체분배기를 포함한다. 반응기본체는 촉매를 함유하는 슬러리가 저장되며, 촉매를 함유하는 슬러리가 유입되는 합성가스와 반응하여 합성연료를 생성한다. 그리고 동적 기체분배기는 반응기본체의 하부에 연통되게 배치되며, 유입관을 통해 공급되는 합성가스를 회전으로 분산시키고, 분산된 합성가스를 균일한 기포입자로 전환시켜 반응기본체의 내부로 공급한다.
Abstract:
The present invention relates to iron oxalate hydrate particles with controlled shapes and a manufacturing method thereof, iron oxide-carbon composites manufactured using the iron oxalate hydrate particles and a manufacturing method thereof, and the purpose thereof for manufacturing ferric oxalate particles with variously controlled shapes by conducting high temperature hydrolysis reaction of saccharides supplying carbon and the aqueous solution of a surfactant and water and providing oxidized iron/carbon composite therefrom. The present invention includes ferric hydroxide salt, a step of mixing the surfactant and saccharides with distilled water in a reactor; a step of forming iron oxalate particle with controlled shapes; a step of separating and washing it by putting distilled water or ethanol after reducing the temperature up to room temperature; a step of powderizing the iron oxalate particle; a step of high temperature sintering the iron oxalate particle under atmospheric condition or an inert gas atmosphere for hydrolysis to form oxidized iron particle among residual carbons. [Reference numerals] (S100) Step of mixing ferric hydroxide salt, a surfactant and saccharides with distilled water in a reactor; (S200) Step of forming iron oxalate particles with controlled shapes by decomposing ferric hydroxide salt through a hydrothermal reaction after temperature rising; (S300) Step of performing dispersing and washing by putting distilled water or ethanol after reducing the temperature up to room temperature; (S400) Step of performing centrifugation on the iron oxalate particles using a centrifuge; (S500) Step of powderizing the iron oxalate particles; (S600) Step of re-dispersing and washing using distilled water or ethanol after centrifugation; (S700) Step of high temperature sintering the iron oxalate particles with a controlled shape in a power condition under atmospheric condition or an inert gas atmosphere for hydrolysis to form oxidized iron particle among residual carbons
Abstract:
Disclosed are a production method of an Fe/carbon nanocomposite catalyst for the Fischer-tropsch synthesis which comprises the following steps: a mixing step of mixing an Fe metallic hydrate salt with porous carbon supporters; an impregnation step of melting and impregnating the mixture around a melting point of the Fe metallic hydrate salt, and impregnating the Fe metallic hydrate salt to the carbon supporters; a particle formation step of plasticizing the Fe metallic hydrate salt in the carbon supporters at high temperatures and under the carbon monoxide or hydrogen atmosphere, for forming metallic Fe carbide particles in the carbon supporters; and a drying step of passivating the Fe carbide particles with ethanol, and vacuum-drying the Fe carbide particles, the Fe/carbon nanocomposite catalyst produced by the same, and a production method of liquid hydrocarbon using the same. [Reference numerals] (AA) Iron hydrate salt;(BB) Porous carbon supporter;(CC) Low-temperature aging;(DD) Form amorphous Fe-C composites;(EE) High-temperature decomposition;(FF) Iron carbide / charcoal nanostructures;(S104) Fe-carbide catalyst activated outside reactor