The Effect of Coal and Solvent Properties on Coal Solvent Extraction

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2010 Vol.47, Issue 2 Preview Page Next Page

The Effect of Coal and Solvent Properties on Coal Solvent Extraction 석탄용매추출법의 석탄과 용매 간 상호작용 및 영향인자 연구: 김기홍 , 조희찬 , 이시훈
Kihong Kim, Heechan Cho and Sihyun Lee

30 April 2010. pp. 133-138

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Abstract

Coal solvent extraction is one of clean coal technologies that involves extraction of organic matter from coal using solvents. Although there were many studies on coal solvent extraction since the early 1900s, characteristics of coal/solvent interaction have not been clearly understood yet. Therefore, in this study, coal solvent extractions were performed for seven coal samples in various solvents using Soxhlet extraction. The test results were analyzed to identify relationships between the extraction yield and coal characteristics and solvent properties.Positive correlations were found with C%, H%, O% of coal, and polar force, DN-AN value of solvent, while negative correlations were found with the dispersion force and the hydrogen bonding force of solvent. This information was used to develop a regression equation for predicting the extraction yield from a few determining factors associated with coal and solvent properties.

Keywords

Coal solvent extraction

Solubility parameter

Electron donor-acceptor

석탄용매추출법은 용매를 이용하여 석탄의 유기성분만을 추출하는 청정석탄제조기술 중의 하나이다.석탄의 용매추출에 대해서는 많은 연구가 진행되어 왔으나 일부 특성에 대한 산발적인 보고만 있을 뿐, 석탄과용매 사이의 상호작용은 아직까지 명확하게 밝혀지지가 않았다. 따라서 본 연구에서는 석탄 7종을 6종류의 용매에 추출시켜 다양한 석탄의 화학적 특성과 용매의 특성들이 추출 반응에 미치는 영향을 분석하였고, 산출된추출률과 각각의 석탄, 용매 특성들을 다중회귀분석함으로써 석탄, 용매의 특성과 추출률 간의 상호 연관성을통계적으로 분석하였다. 본 연구의 수행 결과, 석탄의 탄소, 수소, 산소 함유량이 용매추출반응과 밀접한 관계를가지고 있고 특히 수소함유량에 가장 큰 영향을 받는다는 사실을 알 수 있었다. 또한 용매 특성과 추출률의상관관계를 분석한 결과, 용매의 전자공여수와 전자수여수의 차이값(DN-AN)과 극성력에 +영향을, 분산력과수소결합력에 -영향을 받는다는 것을 알 수 있었으며 이를 토대로 추출률 산출식을 도출할 수 있었다.

키워드

석탄용매추출

용해매개변수

전자공여수여능

References

Barton, A.F.M., 1991, Handbook of solubility parameters and other cohesion parameters, 2nd Ed., CRC Press, Boca Raton, pp. 96-103.
Berkowitz, N., 1994, An introduction to Coal Technology, 2nd Ed., Academic Press, Inc., San Diego, p. 188.
Brendenberg, J.B., Huuska, M., and Vuori, A., 1987, Latest advances in thermal and catalytic reactions of the ether bond in coal and related model compounds, in: A. Volborth, Coal Science and Chemistry, Elsevier, Amsterdam, pp. 1-30.
Chawla, B. and Davis, B.H., 1989, “Effect of temperature and solvent on coal extraction under mild conditions,” Fuel Processing Technology, Vol. 23, pp. 133-148.
Dyrkacz, G.R. and Bloomquist, C.A.A., 2001, “Binary Solvent Extractions of Upper Freeport Coal,” Energy & Fuels, Vol. 15, pp. 1409-1413.
Guillene, M.D. and Blanco, C.G., 1992, “Empirical multiparametric relationships between coal tar pitch extraction yields in organic solvents and solubility parameter components of the solvents,” Fuel, Vol. 71, pp. 295-297.
Gutmann, V., 1976, “Empirical parameters for donor and acceptor properties of solvents,” Electrochimica Acta., 21, pp. 661-670.
Gutmann, V. and Wychera, E., 1966, “Coordination reaction in non aqueous solutions – The role of the donor strength,” Nucl. Chem., Vol. 2, pp. 257-260.
Hansen, C.M., 1967, “The three-dimensional solubility parameter - Key to paint component affinities,” Journal of Paint Technology, Vol. 39, pp. 505-511.
Iino, M., Takanohasai, T., Ohsuga, H., and Toda, K., 1988, “Extraction of coals with CS2-N-methyl-2-pyrrolidinone mixed solvent at room temperature: Effect of coal rank and synergism of the mixed solvent,” Fuel, Vol. 67, pp. 1639-1646.
Iino, M., Takanohashi, T., Obara, S., Tsueta, H., and Sanokawa, Y., 1989, “Characterization of the extracts and residues from CS2-N-methyl-2-pyrrolidinone mixed solvent extraction,” Fuel, Vol. 68, pp. 1588-1593.
Krevelen, D.W., 1965, “Chemical structure and properties of coal. XXVIII. Coal constitution and solvent extraction,” Fuel, Vol. 44, pp. 229-241.
Maroto, M., Love, G.D., and Snape, C.E., 1994, “Relationship between carbon aromaticities and H/C ratios for bituminous coals,” Fuel, Vol. 73, pp. 1926-1928
Marzec, A., Jozwa, M., Betlej, K., and Sobkowiak, M., 1979, “Bituminouscoal extraction in terms of electron-donor and acceptor interactions in the solvent/coal system,” Fuel Processing Technology, Vol. 2, pp. 35-44.
Pande, S. and Sharma, D.K., 2002, “Ethylenediamine-assisted solvent extraction of coal in N-methyl-2-pyrrolidone: Synergistic effect of ethylenediamine on extraction of coal in N-methyl-2-pyrrolidone,” Energy & Fuels, Vol. 16, pp. 194-204.
Shui, H., Wang, Z., and Wang, G., 2006, “Effect of hydrothermal treatment on the extraction of coal in the CS2/NMP mixed solvent,” Fuel, Vol. 85, pp. 1798-1802.
Teas, J.P., 1968, “Graphic analysis of resin solubilities,” Journal of Paint Technology, Vol. 40, p. 516.
Yoshida, T., Li, C., Takanohashi, T., Matsumura, A., Sato, S., and Saito, I., 2004, “Effect of extraction condition on Hyper-Coal production (2) - effect of polar solvents under hot filtration,” Fuel Processing Technology, Vol. 86, pp. 61-72.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society for Geosystem Engineering
Journal Title(Ko) :한국지구시스템공학회지
Volume : 47
No :2
Pages :133-138

[1] Barton, A.F.M., 1991, Handbook of solubility parameters and other cohesion parameters, 2nd Ed., CRC Press, Boca Raton, pp. 96-103.

[2] Berkowitz, N., 1994, An introduction to Coal Technology, 2nd Ed., Academic Press, Inc., San Diego, p. 188.

[3] Brendenberg, J.B., Huuska, M., and Vuori, A., 1987, Latest advances in thermal and catalytic reactions of the ether bond in coal and related model compounds, in: A. Volborth, Coal Science and Chemistry, Elsevier, Amsterdam, pp. 1-30.

[4] Chawla, B. and Davis, B.H., 1989, “Effect of temperature and solvent on coal extraction under mild conditions,” Fuel Processing Technology, Vol. 23, pp. 133-148.

[5] Dyrkacz, G.R. and Bloomquist, C.A.A., 2001, “Binary Solvent Extractions of Upper Freeport Coal,” Energy & Fuels, Vol. 15, pp. 1409-1413.

[6] Guillene, M.D. and Blanco, C.G., 1992, “Empirical multiparametric relationships between coal tar pitch extraction yields in organic solvents and solubility parameter components of the solvents,” Fuel, Vol. 71, pp. 295-297.

[7] Gutmann, V., 1976, “Empirical parameters for donor and acceptor properties of solvents,” Electrochimica Acta., 21, pp. 661-670.

[8] Gutmann, V. and Wychera, E., 1966, “Coordination reaction in non aqueous solutions – The role of the donor strength,” Nucl. Chem., Vol. 2, pp. 257-260.

[9] Hansen, C.M., 1967, “The three-dimensional solubility parameter - Key to paint component affinities,” Journal of Paint Technology, Vol. 39, pp. 505-511.

[10] Iino, M., Takanohasai, T., Ohsuga, H., and Toda, K., 1988, “Extraction of coals with CS2-N-methyl-2-pyrrolidinone mixed solvent at room temperature: Effect of coal rank and synergism of the mixed solvent,” Fuel, Vol. 67, pp. 1639-1646.

[11] Iino, M., Takanohashi, T., Obara, S., Tsueta, H., and Sanokawa, Y., 1989, “Characterization of the extracts and residues from CS2-N-methyl-2-pyrrolidinone mixed solvent extraction,” Fuel, Vol. 68, pp. 1588-1593.

[12] Krevelen, D.W., 1965, “Chemical structure and properties of coal. XXVIII. Coal constitution and solvent extraction,” Fuel, Vol. 44, pp. 229-241.

[13] Maroto, M., Love, G.D., and Snape, C.E., 1994, “Relationship between carbon aromaticities and H/C ratios for bituminous coals,” Fuel, Vol. 73, pp. 1926-1928

[14] Marzec, A., Jozwa, M., Betlej, K., and Sobkowiak, M., 1979, “Bituminouscoal extraction in terms of electron-donor and acceptor interactions in the solvent/coal system,” Fuel Processing Technology, Vol. 2, pp. 35-44.

[15] Pande, S. and Sharma, D.K., 2002, “Ethylenediamine-assisted solvent extraction of coal in N-methyl-2-pyrrolidone: Synergistic effect of ethylenediamine on extraction of coal in N-methyl-2-pyrrolidone,” Energy & Fuels, Vol. 16, pp. 194-204.

[16] Shui, H., Wang, Z., and Wang, G., 2006, “Effect of hydrothermal treatment on the extraction of coal in the CS2/NMP mixed solvent,” Fuel, Vol. 85, pp. 1798-1802.

[17] Teas, J.P., 1968, “Graphic analysis of resin solubilities,” Journal of Paint Technology, Vol. 40, p. 516.

[18] Yoshida, T., Li, C., Takanohashi, T., Matsumura, A., Sato, S., and Saito, I., 2004, “Effect of extraction condition on Hyper-Coal production (2) - effect of polar solvents under hot filtration,” Fuel Processing Technology, Vol. 86, pp. 61-72.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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