화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.12, No.3, 157-164, September, 2006
Export Citation
경막형 용융결정화에 의한 나프탈렌과 2-메틸나프탈렌 혼합물로부터 나프탈렌의 분리
Purification of Naphthalene from Naphthalene and 2-methylnaphthalene System by Layer MelMelt-Crystallization
고주영, 김철웅†, 박소진1
  • 한국화학연구원 미세공정기술연구센터, 305-606 대전시 유성구 장동 100
  • 1충남대학교 공과대학 화학공학과, 305-764 대전시 유성구 궁동 220
Joo-Young Koh, Chul-Ung Kim†, and So-Jin Park1
  • Chemical Process and Engineering Center, Korea Research Institute of Chemical Technology, P.O. Box 107, Yuseong, Daejeon 305-600, Korea
  • 1Department of Chemical Engineering, Chungnam National University, Gung-dong, Yuseong, Daejeon 305-764, Korea
E-mail:
초록
나프탈렌에 포함된 주요 불순물이 2-메틸나프탈렌을 정제하기 위해, 나프탈렌과 2-메틸나프탈렌의 2성분계에 관한 고액상평형 데이터를 측정하였으며, 경막형 용융결정화에 관한 실험을 실시하였다. 이러한 2성분계의 고액상평형은 단순 고용계를 형성하였는데, 시차주사 열량분석에 의한 열분석 방법과 정적인 방법에 의해 측정한 결과는 거의 유사하였다. 결정화 실험에서 나프탈렌의 순도와 결정의 수율은 냉각속도에 주로 의존하였는데, 냉각속도가 낮을 수 록 나프탈렌의 순도 및 수율은 증가하는 경향을 나타내었으며, 분리정제 효율의 척도인 유효분배계수는 냉각속도가 증가함에 따라 감소하는 경향을 나타내었다. 결과적으로, 용융결정화에 의해 나프탈렌의 순도는 약 5~7% 정도가 증가하였다.
In order to purify 2-methylnaphthalene as main impurity included in naphthalene, SLE (solid-liquid equilibria) on two components system including naphthalene and 2-methylnaphthalene were measured and a layered melt crystallization has been studied. SLE in the present system is shown a simple eutectic mixture and the experimental results using DSC method is similar to the static method. Purity and yield of naphthalene in crystal depended mainly on the cooling rate: Increasing cooling rate, the purity of naphthalene in crystal increase, whereas the yield of that decrease. The effective distribution coefficient (Keff) as the degree of impurity removal was observed to decrease with decreasing of cooling rate. Therefore, the purity of naphthalene by melt crystallization can be enhanced to 5~7%.
Keywords:경막결정화;정제;나프탈렌;2-메틸나프탈렌;수율;유효분배계수
  1. Zeber L, Lazechy J, Hydrocarb. Process., 55 (2005)
  2. Gaydos RM, "Naphthalene," in Encyclopedia of Chemical Technology 2nd ed., Vol. 15, 698-717 (1982)
  3. Masahiro M, Koji Y, McWilliams JP, Sapre AV, "Process for Preparing 2-Methylnaphthalene," US patent 5,723,711 (1998)
  4. Kim CU, Koh JC, Jeong SY, Jin HK, "Separation Method of Naphthalene from Pyrolysis Gas Oil through Multi-step Layer Melt Crystallization without Solvent," Korea Patent 2005-0113080
  5. Nicholas P, Chem. Eng. Prog., 52 (1992)
  6. Matsuoka M, Fukuda T, Takagi Y, Takiyama H, J. Cryst. Growth, 166, 1035 (1996)
  7. Kim KJ, Kim JW, Kim JK, Cheon YH, J. Korean Ind. Eng. Chem., 13(1), 63 (2002)
  8. Sloan GJ, Mcghie AR, "Techniques of Melt Crystallization," New Youk, John Wiley and Sons (1998)
  9. Ossipov P, Int. J. Heat Mass Transf., 41(4-5), 691 (1998)
  10. Mersmann A, "Crystallization Technology of Handbook," Mercel Dekker (1994)
  11. Park SJ, Paik SK, J. Korean Ind. Eng. Chem., 9(6), 864 (1998)
  12. Roland W, Dana C, Jurgen G, J. Chem. Eng. Data, 46, 1490 (2001)
  13. Takiyama H, Suzuki H, Uchida H, Matsuoka M, Fluid Phase Equilib., 194, 1107 (2002)
  14. Kim KJ, Kim KM, Lee HJ, Kim JK, J. Korean Ind. Eng. Chem., 13(5), 428 (2002)