http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 서명도 ( Myoung Do Seo ) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
N-vinyl-2-pyrrolidone과 2-pyrrolidone 혼합물의 고-액 상평형 및 용융결정화를 이용한 N-vinyl-2-pyrrolidone의 결정성장속도 연구
김선형 ( Sun Hyung Kim ),서명도 ( Myoung Do Seo ),탁문선 ( Moon Seon Tak ),김우식 ( Woo Sik Kim ),양대륙 ( Dae Ryuk Yang ),강정원 ( Jeong Won Kang ) 한국화학공학회 2013 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.51 No.5
N-vinyl-2-pyrrolidone (NVP)에 포함된 불순물인 2-pyrrolidone을 제거하기 위해 용융결정화가 이용될 수 있으며, 그기본 연구로써 두 물질의 고-액 상평형을 측정하였다. 시차주사 열량계(DSC)와 결정화기를 이용하여 얻어진 두 실험결과는 비슷한 경향을 보였으며, NVP와 2-pyrrolidone으로 구성된 2성분계 혼합물이 공융계를 형성함을 보였다. 간단한 열역학 식을 이용하여 혼합물의 상평형과 공융점(eutectic point)을 계산하였으며 실험결과와 비교적 잘 일치하였다. 결정화 공정의 설계에 중요한 요소인 결정성장속도를 알기 위해 판형 결정화기를 이용하여 시간에 따른 NVP 결정의 두께를 측정하였다. 냉각온도가 낮을수록 NVP의 결정성장속도가 증가하였다. 실험데이터로부터 상관된 열전달계수는 결정의 성장 거동을 잘 설명하였다. Solid-liquid equilibria for mixtures composed of n-vinyl-2-pyrrolidone (NVP) and 2-pyrrolidone were measured as a basic study for the melt crystallization process to remove 2-pyrrolidone as impurity included in NVP. A differential scanning calorimeter (DSC) and a crystallizer were used and the experimental results obtained from two methods were similar. The mixture showed a eutectic system which has a single composition at the minimum melting temperature. Calculation results from simple thermodynamic equations were found in general agreements with present data. To determine the growth rate of NVP crystal which is important for the design of crystallization process, thicknesses of the crystal were measured with the time using a layer melt crystallizer. The growth rates increased as cooling temperatures decreased. Heat transfer coefficient correlated from present data was found to successfully describe the crystal growth behavior.
-
바이오매스 저장고 내부 비산먼지 포집용 PTFE 멤브레인 연구
임경택 ( Kyung-taek Lim ),서명조 ( Myoung-jo Seo ),정진도 ( Jin-do Chung ) 한국환경기술학회 2021 한국환경기술학회지 Vol.22 No.2
In the fuel shed of a biomass SRF power plant generates a large amount of high concentration of scattered dust, which can lead to health problems, safety and facility accidents for field workers. This study was conducted to develop a collection technology suitable for the characteristics of biomass scattering dust. A PTFE membrane with a pore size of 0.05 to 10 ㎛ was developed and laminated on a felt to make a filter bag. PTFE membrane filter bags are used in dust collection systems that require durability, high temperature and chemical resistance to efficiently remove fine dust and maintain high-efficiency performance for a long time. The PTFE membrane filter bag is a surface filtration method that prevents fine dust from penetrating the inside of the filter material, thus maintaining filtration efficiency and a long service life. It has efficiency of collecting more than 99.94 % needle-shaped scattering dust.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
