Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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High-Purity Purification of Indole Contained in Coal Tar Absorption Oil by Extraction-Distillation-Crystallization Combination

추출-증류-결정의 조합에 의한 콜타르 흡수유 중에 함유된 인돌의 고순도 정제

  • Kim, Su Jin (Department of Cosmetic Science, Chungwoon University)
  • Received : 2014.04.14
  • Accepted : 2014.05.08
  • Published : 2014.06.10
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Abstract

Purification of indole contained in model coal tar absorption oil was examined by extraction-distillation-crystallization combination. The absorption oil consists of nine components such as four kinds of nitrogen heterocyclic compounds (9.2% quinoline, 2.4% iso-quinoline, 4.7% indole, 2.4% quinaldine), three kinds of bicyclic aromatic compounds (14.2% 1-methylnaphthalene, 31.8% 2-methylnaphthalene, 23.5% dimethylnaphthalene), 5.5% biphenyl and 3.3% phenyl ether. 99.5% indole was recovered by combination of formamide extraction-distillation-solute crystallization using n-hexane. Furthermore, the recovery process of indole contained in coal tar absorption oil was studied by using the experimental results obtained by each operation of this work.

추출-증류-결정의 조합에 의해 모델 콜타르 흡수유 중에 함유된 인돌의 정제를 검토했다. 흡수유는 4종류의 질소고리 화합물(9.2% 퀴놀린, 2.4% 이소퀴놀린, 4.7% 인돌, 2.4% 퀴날딘), 3종류의 2환 방향족 화합물(14.2% 1-메틸나프탈렌, 31.8% 2-메틸나프탈렌, 23.5% 디메틸나프탈렌), 5.5% 비페닐과 3.3% 페닐에테르의 9종류의 화합물로 구성되어 있다. 포름아미드 추출-증류-노말헥산을 사용한 용액 결정화의 조합의 채택에 의해 99.5% 인돌을 회수할 수 있었다. 본 연구를 통해 얻어진 실험적 결과를 이용하여 콜타르 흡수유 중에 함유된 인돌의 회수공정을 검토했다.

Keywords

References

  1. S. J. Kim and Y. J. Chun, Separation of nitrogen heterocyclic compounds from model coal tar fraction by solvent extraction, Sep. Sci. Techno., 40, 2095-2109 (2005). https://doi.org/10.1081/SS-200068488
  2. S. J. Kim, H. C. Kang, Y. S. Kim, and H. J. Jeong, Liquid membrane permeation of nitrogen heterocyclic compounds contained in model coal tar fraction, Bull. Korean Chem. Soc., 31, 1143-1148 (2010). https://doi.org/10.5012/bkcs.2010.31.5.1143
  3. S. J. Kim, Y. J. Chun, and H. J. Jeong, Separation and recovery of indole from model coal tar fraction by batch cocurrent 5 stages equilibrium extraction, J. Korean Ind. Eng. Chem., 18, 168-172 (2007).
  4. S. J. Kim, H. C. Kang, and H. J. Jeong, High-purity purification of indole contained in coal tar fraction - separation of close boiling mixtures of indole by solute crystallization-, Appl. Chem. Eng., 21, 238-241 (2010).
  5. I. Uemasu, Effect of methanol-water mixture solvent on concentration of indole in coal tar using a-cyclodextrin as complexing agent, Sekiyu Gakkaishi, 34, 371-374 (1991). https://doi.org/10.1627/jpi1958.34.371
  6. K. Ukegawa, A. Matsumura, Y. Kodera, T. Kondo, T. Nakayama, H. Tanabe, S. Yoshida, and Y. Mito, Solvent extraction of nitrogen compounds from a coal tar fraction (Part I) Effect of extraction conditions on the extraction rate and the selectivities of nitrogen compounds, Sekiyu Gakkaishi, 33, 250-254 (1990). https://doi.org/10.1627/jpi1958.33.250
  7. R. Egashira and M. Nagai, Separation of nitrogen heterocyclic compounds contained in coal tar absorption oil fraction by solvent extraction, Sekiyu Gakkaishi, 43, 339 (2000). https://doi.org/10.1627/jpi1958.43.339
  8. R. Egashira and C. Salim, Solvent extraction of nitrogen heterocyclic compounds contained in coal tar absorption oil fraction - Improvement of separation performance by addition of aluminum chloride to solvent-, Sekiyu Gakkaishi, 44, 178-182 (2001). https://doi.org/10.1627/jpi1958.44.178
  9. Y. Kodera, K. Ukegawa, Y. Mito, M. Komoto, E. Ishikawa, and T. Nagayama, Solvent extraction of nitrogen compounds from coal liquids, Fuel, 70, 765-769 (1991). https://doi.org/10.1016/0016-2361(91)90076-M
  10. I. Uemasu and T. Nakayama, Concentration of indole in coal tar using ${\alpha}$-cyclodextrin as the host for inclusion complexation, J. Inclus. Phenom. Molec. Recogn. Chem., 7, 327-331 (1989). https://doi.org/10.1007/BF01076986
  11. I. Mochida, Y. Q. Fei, K. Sakanishi, Capture and recovery of basic nitrogen species in coal tar pitch, using nickel sulfate as adsorbent, Chem. Lett., 515-518 (1990).
  12. Y. Yamamoto, Y. Sato, T. Ebina, C. Yokoyama, S. Takahasi, Y. Mito, H. Tanabe, N. Nishiguchi, and K. Nagaoka, Separation of high purity indole from coal tar by high pressure crystallization, Fuel, 70, 565-566 (1991). https://doi.org/10.1016/0016-2361(91)90039-D

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  1. Comparison of Methanol with Formamide on Extraction of Nitrogen Heterocyclic Compounds Contained in Model Coal Tar Fraction vol.26, pp.2, 2015, https://doi.org/10.14478/ace.2015.1003