Removal of Aromatic Hydrocarbons from Reforming Naphtha. Combined Extraction — Extractive–Azeotropic Distillation Process
Removal of Aromatic Hydrocarbons from Reforming Naphtha. Combined Extraction — Extractive–Azeotropic Distillation Process
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DOI：
10.1023/b:cafo.0000041217.96743.22
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发表时间：
2004-07
影响因子：
0.6
通讯作者：
A. A. Gaile-A.;G. D. Zalishchevskii;N. N. Gafur-N.;L. Semenov;O. M. Varshavskii;N. Fedyanin;L. L. Koldobskaya-L.
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文献类型：
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作者：
A. A. Gaile-A.;G. D. Zalishchevskii;N. N. Gafur-N.;L. Semenov;O. M. Varshavskii;N. Fedyanin;L. L. Koldobskaya-L.
通过用环丁砜萃取，然后用环丁砜和乙醇对萃取相进行萃取/共沸蒸馏，从石脑油馏分重整油中分离出 C⊂6–C⊂9 芳烃。萃取和萃取共沸精馏阶段环丁砜与原料的质量比分别为1.6:1和0.28:1，乙醇与原料的比例为0.032:1，得到萃余液，收率为65wt.%。 %，满足汽油和苯、甲苯、C⊂8、C⊂9芳烃的长期环保要求，收率分别为89、77、69和24wt。 %。
Separation of C⊂6–C⊂9 aromatic hydrocarbons from naphtha cut reformate by extraction with sulfolane followed by extractive/azeotropic distillation of the extract phase with sulfolane and ethanol. For mass ratios of sulfolane to feedstock of 1.6:1 and 0.28:1 in the stages of extraction and extractive–azeotropic distillation and a ratio of ethanol to feedstock of 0.032:1, raffinate was obtained with a yield of 65 wt. %, which satisfies the long–term environmental requirements for gasoline and benzene, toluene, and C⊂8 and C⊂9 aromatic hydrocarbons with a yield of 89, 77, 69, and 24 wt. %.