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RISS 활용도 분석
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일본/중국/유럽자료
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최신/인기 학술자료
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해외논문구매대행(E-DDS)
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RISS 인기검색어
- 검색키워드
- 저자 : 전종기 (검색결과 405 건)
- 무료
- 기관 내 무료
- 유료
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Optimization study on the azeotropic distillation process for isopropyl alcohol dehydration
전종기,조정호 한국화학공학회 2006 Korean Journal of Chemical Engineering Vol.23 No.1
and optimization work was performed using benzene as an entrainer to obtain a nearly pure an-hydrous isopropyl alcohol product from dilute aqueous IPA mixture through an azeotropic distillation process. NRTLliquid activity coefficient model and PRO/II with PROVISION 6.01, a comercial process simulator, were used toand the concentration of IPA at concentrator top as a manipulated variable. As a result, 38.7 mole percent of IPA atconcentrator top gave the optimum value that minimized the total reboiler heat duties of the three distillation columns.
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전종기,박영권,김주식 한국자원리싸이클링학회 2004 資源 리싸이클링 Vol.13 No.3
수소화 반응용 니켈 폐촉매를 배소하여 산화니켈을 회수한 다음, 회수한 산화니켈을 산처리하고 침전법으로 Kieselguhr에 담지 된 니켈 촉매로 재생시켰다. 폐촉매의 배소 조건이 니켈산화물의 회수에 미치는 영향을 조사하였다. 니켈 폐촉매의 재생 과정에서 $1,000^{\circ}C$의 온도에서 배소 하였을 경우에 대부분 니켈산화물로 회수할 수 있었다. 산화니켈을 산처리하여 얻은 질산니켈을 사용하여 Kieselguhr에 담지 된 니켈 촉매를 제조하였다. 이때 조촉매의 첨가, 침전 조건 및 환원 조건 등이 재생된 촉매의 식물성 오일의 수소화 반응 성능에 미치는 영향을 조사하였다. 알카리 금속인 CaO와 희토류 금속인 $Ce_2$$O_3$를 조촉매로 첨가했을 때 수소화 반응의 활성이 증가하였다. Nickel oxide was recovered through roasting of a spent catalyst for hydrogenation reaction. Nickel on Kieselguhr catalysts were prepared by a precipitation method after a treatment of the recovered-nickel oxide with an acid. Effects of roasting temperature of the spent catalyst on recovery of nickel oxide was investigated. Most of nickel oxide could be recovered through roasting of the spent catalyst at $1000^{\circ}C$. In regeneration of catalysts by the precipitation method after the treatment of nickel oxide with an acid, the effect of promoter, precipitation condition and reduction condition on catalytic performance in vegetable oil hydrogenation were investigated. The addition of CaO or $Ce_2$$O_3$ resulted in an increase of catalytic activity.
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제올라이트 흡착제 상에서 이산화탄소 회수를 위한 PSA 공정 연구 : 공정성능에 대한 세정유량의 영향 Effect of Rinse Rate on Process Performance
전종기,박영권,주국택 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.1
In order to investigate the performance of carbon dioxide PSA over zeolite adsorbent, the present study showed results of isotherm measurement, cyclic operation of 3-bed apparatus, and the corresponding numerical simulation. The experiment data of bed temperature, purity, recovery were matched well with that of numerical simulation. Purity of both gas and adsorbent phase increased rapidly with rinse rate but the degree of increase was retarded for large rinse rate. The total amount of adsorbed increased only 10% even if rinse rate was enlarged to 4 times. Optimal rinse rate was 7 Nm³/hr in this study. The heating rinse led to augments in recovery and productivity, possibly thanks to ease of desorption resulting from increased volumetric rinse rate and temperature rise in the column.
