| 从催化裂化柴油中分离高纯度2,6-二甲基萘 |
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| 引用本文： | 孙学文,刘彦辉.从催化裂化柴油中分离高纯度2,6-二甲基萘[J].精细石油化工,2002(5):26-28. |
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| 作者姓名： | 孙学文 刘彦辉 |
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| 作者单位： | 1. 石油大学,北京,重质油加工国家重点实验室,北京,102249
2. 大庆炼化公司炼油厂,大庆,163411 |
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| 摘 要： | 以大庆石油化工总厂炼油厂催化柴油为原料 ,通过精馏分离得到二甲基萘 (DMN)窄馏分 (2 5 8～ 2 70℃ ) ,经糠醛溶剂抽提 ,减压蒸馏后 ,在 -10～ -2 5℃冷冻 2～ 5h ,离心分离制得纯度约 80 %的粗 2 ,6 DMN ,再经无水乙醇在 -10～ -2 5℃重结晶 ,得到纯度大于等于 98%的 2 ,6 DMN。
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| 关 键 词： | 催化柴油 2 6-二甲基萘 精馏 糠醛抽提 冷冻 重结晶 |
| 修稿时间： | 2001年4月23日 |
SEPARATION OF HIGH PURITY 2,6-DIMETHYLNAPHTHALENE FROM CATALYTIC DIESEL OIL |
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| Sun Xuewen and Liu Yanhui . State Key Laboratory of Heavy Oil Processing,Petroleum University.SEPARATION OF HIGH PURITY 2,6-DIMETHYLNAPHTHALENE FROM CATALYTIC DIESEL OIL[J].Speciality Petrochemicals,2002(5):26-28. |
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| Authors: | Sun Xuewen and Liu Yanhui [ State Key Laboratory of Heavy Oil Processing Petroleum University |
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| Abstract: | Narrow fraction of dimethyl naphthalene(b.r. 258270 ℃) was obtained from cat. diesel oil of Daqing refining and chemical Co. refinery through rectification, and raw 2,6 Dimethyl naphthalene with purity 80% was obtained from this fraction through furfural extraction, vac. distillation refrigeration(-10-25 ℃, 25 h) and centrifugal separation. Then high purity (≥98%) 2,6 dimethyl naphthalene was obtained through recrystallization with absolute alcohol. |
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| Keywords: | cat diesel oil 2 6 dimethyl naphthalene rectification furfural extraction refrigeration recrystallization |
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