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김광수,서천범,정순석,Kim, Kwang Soo,Seo, Chen Beom,Chuhg, Soon Seok 한국벤처창업학회 2013 벤처창업연구 Vol.8 No.3
본 연구의 목적은 생산현장의 생산성향상을 위한 낭비를 분석하여 객관적이고, 과학적으로 현장낭비를 종합적으로 분석하여 이를 개선함으로써, 최적의 생산 라인을 구축하여 원가절감을 하고, 나아가 기업경쟁력을 강화하고자 한다. 많은 기업들이 현장의 낭비를 분석하는데 있어서 명확한 로드 맵이 없어 기존의 IE(Industrial Engineering)기법과 응용 IE기법을 기업현실과 상황을 고려하여 각각 활용, 그 성과측면에서의 아쉬움을 가지고 있다. 본 연구의 생산혁신 프로세스는 조립라인, 가공라인, 자동화 라인 등에 존재하는 모든 낭비를 분석할 수 있도록 추진 단계별로 고전 IE 및 응용 IE 기법을 체계적으로 정리함으로써 생산현장의 낭비를 종합적으로 분석/파악하여 전체 낭비가 얼마나 존재하며, 이를 개선하기 위한 선택과 집중을 기할 수 있도록 개선성과를 극대화하고, 개선활동계획 수립에 기여하고자 함이다. This paper study is for enhance the productivity. The purpose of this study is save the cost and contribute the enhancing company's competitiveness by analysis overall wastes in production line and improve the wastes in production line. Many company does not have clear process for analysis the wastes in production line. so they use classical IE tool and advanced IE tool by considering their current situation but the result was not so effective. The study to arrange the classic IE and advanced IE by each step to analysis the wastes by each production line include assembly line and processing line and automation line so that we can predict the mount of the overall wastes and easily select / focus on the tool for maximize the improvement result. It will contribute to establish the mid term and long term improvement activity plan.
타이타니아계 촉매상에서의 CO 에 의한 SO2 환원 반응
우희철,이진우,이병선,하기성,박대원,정종식 ( Hee Chul Woo,Jin Woo Lee,Byung Sun Lee,Ki Sung Ha,Dae Won Park,Jong Shik Chuhg ) 한국공업화학회 1997 응용화학 Vol.1 No.1
A series of MO_x(transition metal oxides)/TiO₂ powder mixture were studied as catalysts for the reduction of SO₂ by CO to elemental sulfur. Among these catalysts, SnO₂/TiO₂ was found to be the most effective catalyst for the reaction. When the catalyst was a mixture of SnO₂ and TiO₂ the activity increased drastically. Experimental evidence of the formation of a stable COS was obtained from a two-stage reactor system and TPR. XRD data of the used catalyst showed the presence of SnS₂, SnS and TiO_(2-x) phases. In the reaction system, an equilibrium is established between SnS₂ and SnS, which acts as a medium for sulfur supply in the formation of COS. From the above results, a mechanism based on formation of COS intermediate and catalyst bifunctionality is proposed for the SO₂ reduction by CO.