A seven-stage counterflow extraction of C6-C8 arenes from a unified reformate (feedstock of the extraction unit in an LG-35-8/300B plant) by a mixed extraction agent including sulfolane and triethylene glycol (TEG) with a mass ratio of 1:1 and 60:40 % and a process temperature of 50 and 70°C is investigated. The increased sulfolane content in the mixed extraction agent results in a fourfold reduction in recyclate consumption; this permits an increase in the yield of the gasoline and doxylene cuts from the plant employed to produce overall xylenes that can be additionally refined in the extraction unit of the LG-35-8/300B plant.
References
N. B. Marusina, A. A. Gaile, and L. V. Semenov, Zh. Prikl. Khim., 67, No. 8, 1311–1315 (1994).
N. B. Marusina, A. A. Gaile, and L. V. Semenov, ibid, 69, No. 7, 1163–1169 (1996).
Russian Federation Patent No. 2127718.
Russian Federation Patent No. 2177023.
A. A. Gaile, A. S. Erzhenkov, L. V. Semenov et al., Zh. Prikl. Khim., 74, No. 10, 1618–1621 (2001).
O. M. Varshavskii, N. V. Sulyagin, A. M. Ivanov et al., In: Collection of Materials Presented at the Eighth Saint Petersburg International Forum on Technico-Economic Cooperation, 8–10 April 2008 [in Russian], Saint Petersburg (2008), pp. 180–185.
A. A. Gaile, V. E. Somov, A. A. Zuikov et al., Neftepererab. Neftekhim., No. 5, 30–32 (2000).
Russian Federation Patent No. 2157799.
A. A. Gaile, G. D. Zalishchevskii, S. A. Erzhenko et al., Zh. Prikl. Khim., 81, No. 8, 1296–1302 (2008).
L. Alders, Liquid Extraction [Russian translation], Izdatel’stvo Inostrannogo Literatura, Moscow (1969).
Author information
Authors and Affiliations
Additional information
Translated from Khimiya i Tekhnologiya Topliv i Masel, No.4, pp. 3–6, July–August, 2009.
Rights and permissions
About this article
Cite this article
Gaile, A.A., Zalishchevskii, G.D., Koldobskaya, L.L. et al. Extraction of C6-C8 arenes from unified reformate by mixed triethylene glycol-sulfolane- water extraction agent. Chem Technol Fuels Oils 45, 221–225 (2009). https://doi.org/10.1007/s10553-009-0136-4
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10553-009-0136-4