Separation of Primary Alcohols and Saturated Alkanes from Fisher-Tropsch Synthesis Products

doi:10.1016/j.cjche.2014.06.025

摘要/Abstract

摘要： Amethod for separating primary alcohols and saturated alkanes fromthe products of Fisher-Tropsch synthesis is developed. The separation scheme consists of three steps: (1) the raw material is pre-separated by fractional distillation into four fractions according to normal boiling points; (2) appropriate extractants are selected to separate the primary alcohols from the saturated alkanes in each fraction; (3) the extractants are recovered by azeotropic distillation and the primary alcohols in the extract phase are purified. Based on the proposedmethod, the total recovery rates of the primary alcohols and the saturated alkanes are 86.23% and 84.62% respectively.

关键词: Fisher-Tropsch synthesis, Primary alcohol, Saturated alkane, Fractional distillation, Extraction, Azeotropic distillation

Abstract: Amethod for separating primary alcohols and saturated alkanes fromthe products of Fisher-Tropsch synthesis is developed. The separation scheme consists of three steps: (1) the raw material is pre-separated by fractional distillation into four fractions according to normal boiling points; (2) appropriate extractants are selected to separate the primary alcohols from the saturated alkanes in each fraction; (3) the extractants are recovered by azeotropic distillation and the primary alcohols in the extract phase are purified. Based on the proposedmethod, the total recovery rates of the primary alcohols and the saturated alkanes are 86.23% and 84.62% respectively.

Key words: Fisher-Tropsch synthesis, Primary alcohol, Saturated alkane, Fractional distillation, Extraction, Azeotropic distillation

Suqiao Li, Zhongli Tang, Fujun Zhou, Wenbin Li, Xigang Yuan. Separation of Primary Alcohols and Saturated Alkanes from Fisher-Tropsch Synthesis Products[J]. , 2014, 22(9): 980-983.

参考文献

[1] R.B. Anderson, The Fisher-Tropsch Synthesis, Academic Press, New York, 1984.
[2] A.Y. Khodakov,W. Chu, P. Fongarland, Advances in the development of novel cobalt Fischer-Tropsch catalysts for synthesis of long-chain hydrocarbons and clean fuels, Chem. Rev. 107 (2007) 1692-1744.
[3] A. Demirbas, Converting biomass derived synthetic gas to fuels via Fisher-Tropsch synthesis, Energy Sources 29 (2007) 1507-1512.
[4] J. Anfray, M. Bremaud, P. Fongarland, A. Khodakov, Kinetic study and modeling of Fisher-Tropsch reaction over a Co/Al2O3 catalyst in a slurry reactor, Chem. Eng. Sci. 62 (2007) 5353-5356.
[5] P.C. Das, N.C. Pradhan, A.K. Dalai, N.N. Bakshi, Carbon monoxide hydrogenation over zirconia supported Ni and Co-Ni bimetallic catalysts, Catal. Lett. 98 (2004) 153-160.
[6] W. Zhang, A review of techniques for the process intensification of fluidized bed reactors, Chin. J. Chem. Eng. 17 (2009) 688-702.
[7] S. Hinchiranan, Y. Zhang, S. Nagamori, TiO2 promoted Co/SiO2 catalysts for Fisher-Tropsch synthesis, Fuel Process. Technol. 89 (2008) 455-459.
[8] A.M. Kazi, F.K. Bedu-Addo, J. Goodwin, G. James, CO hydrogenation over lanthana promoted cobalt catalysts, Prepr. Div. Pet. Chem. Am. Chem. Soc. 37 (1) (1992) 234-238.
[9] J.M. Zhao, Development status of higher alcohol in china, Asian Chem. Intermed. 6 (2001) 6-8.
[10] J.M. Zhao, High alcohol market and its development, Chem. Technol. Mark. 8 (2001) 10-12.
[11] G.J.K. Bonthuys, C.E. Schwarz, A.J. Burger, J.H. Knoetze, Separation of alkanes and alcohols with supercritical fluids. Part I: Phase equilibria and viability study, J. Supercrit. Fluids 57 (2011) 101-111.
[12] C.E. Schwarz, G.J.K. Bonthuys, R.F. van Schalkwyk, D.L. Laubscher, A.J. Burger, J.H. Knoetze, Separation of alkanes and alcohols with supercritical fluids. Part II: Influence of process parameters and size of operating range, J. Supercrit. Fluids 58 (2011) 352-359.
[13] R. Krishna, J.M. Van Baten, Entropy-based separation of linear chain molecules by exploiting differences in the saturation capacities in cage-type zeolites, Sep. Purif. Technol. 76 (2011) 325-330.
[14] R.G. Mathys, W. Heinzelmann, B. Witholt, Separation of higher molecular weight organic compounds by pervaporation, Chem. Eng. J. 67 (1997) 191-197.
[15] T. Huang, Z.G. Tang, Z.T. Duan, A combined process of extraction and azeotropic distillation used to separate isopropanol from dilute aqueous solution for reduction of energy cost, Fine Chem. 20 (5) (2003) 273-279.
[16] W. Wang, L.F. Guo, S. Gao, Isolation and purification of isopropyl alcohol, Yunnan Chem. Technol. 38 (6) (2011) 58-61.
[17] N.L. Cheng, Solvent Handbook, Fourth edition, Chemical Industry Press, Beijing, 2007.
[18] J.P. De Wet, W. Jansen, Extraction of oxygenates from a hydrocarbon stream, China patent, CN1764619, 2006.
[19] J.P. De Wet, Separation of oxygenates from a hydrocarbon stream, China patent, CN1468292A, 2004.
[20] Y. Yadollah, S. Abolfazl, K. Mostafa, Orthogonal array design for the optimization of supercritical carbon dioxide extraction of platinum (IV) and rhenium (VII) from a solid matrix using cyanex 301, Sep. Purif. Technol. 61 (2008) 109-114.
[21] X. Qin, X.Y. Jin, One step bioleaching of sulphide ore with low concentration of arsenic by Aspergillus niger and Taguchi orthogonal array optimization, Adv. Mater. Res. 396-398 (2012) 2285-2288.
[22] I. Sadia, R.A. Chi, C.L. Jae, N.B. Haq, Optimization of supercritical CO₂ extraction of Hovenia dulcis thumb seed oil by orthogonal test methodology, Chin. J. Chem. Eng. 20 (5) (2012) 923-929.
[23] C.D. Keefe, Z. Istvankova, Computational study of proper and improper hydrogen bonding in methanol complexes, Can. J. Chem. 89 (2011) 34-46.
[24] D.F. Wang, W. Ji, S.L. Liu, M.Z. Qi, Experiment study of alcohol ternary mixture separation by dividing wall column, Guangzhou Chem. Ind. 39 (22) (2011) 42-45.
[25] Q. Ye, C.J. Qian, Z.R. Qiu, Simulation of alcohol mixture separation by divided-wall distillation column, Chem. Eng. 36 (2) (2008) 1-4.
[26] Y. Bai, Y.H. Li, J.Q. Liu, Separation technology of the by-product in water of Fisher-Tropsch synthesis, Ph.D. thesis, Tianjin, Tianjin University.