文献类型：期刊文献

中文题名：工业双戊烯连续催化脱氢反应制备对伞花烃的20t/a放大实验

英文题名：Preparation of p-Cymene by Continuous Catalytic Dehydrogenation of Industrial Dipentene in 20 t/a Scale

作者：张秋格[1,2,3] 毕良武[1,2,3] 赵振东[1,2,3] 李冬梅[1,2,3] 古研[1,2,3] 王婧[1,2,3] 薄采颖[1,2,3] 陈玉湘[1,2,3] 刘先章[1,2,3]

第一作者：张秋格

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室

年份：2009

期号：7

起止页码：675-679

中文期刊名：精细化工

外文期刊名：Fine Chemicals

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家林业局重点科学技术研究项目(2006-51);浙江省与中国林科院省院合作林业科技项目(2008SY06)~~

语种：中文

中文关键词：对伞花烃;工业双戊烯;连续催化脱氢反应

外文关键词：p-cymene ; industrial dipentene ; continuous catalytic dehydrogenation

分类号：TQ351.472

摘要：工业双戊烯主要是由苧烯、异松油烯、α-松油烯、γ-松油烯和对伞花烃等单环萜烯组成的混合物,总有效成分的质量分数为91.66%。在20 t/a连续反应放大装置上,工业双戊烯经Pd/C催化连续脱氢反应所得主产物为对伞花烃,反应副产物包括反式-对[艹孟]烷、顺式-对[艹孟]烷、对[艹孟]烯和2,6-二甲基辛烷等。结果表明,当工业双戊烯进料速度为4 L/h和氮气流速为2 L/m in时,在260－310℃,随着反应温度的提高,产物中对伞花烃的质量分数和产率也同步提高;反应温度由260℃升至280℃,产物中对伞花烃的质量分数由86.26%提高到90.40%,产率由92.65%提高到97.09%,20℃的温度差使产物中对伞花烃的质量分数和产率分别提高4.14%和4.44%;反应温度280－10℃,产物中对伞花烃的质量分数在90.40%－91.95%,产率在97.09%－98.76%,30℃的温度差仅使产物中对伞花烃的质量分数和对伞花烃的产率分别提高1.55%和1.67%。280℃是可选择和长期运行的反应温度,此时对伞花烃的产率为97.09%。
Industrial dipentene is a mixture of monocylie terpenes mainly containing limonene, terpinolene,α-terpinene,γ-terpinene, and p-cymene in the total mass fraction of 91.66%. The main product of the continuous catalytic dehydrogenation of the industrial dipentene by Pd/C catalyst was p- cymene in 20 t/a equipment. The by-products included trans-p-menthane, cis-p-menthane ,p-menthene, and 2,6-dimethyloctane. The results showed that the mass fraction of p-cymene in the product and the yield of p-cymene increased simultaneously with increasing temperature at the conditions of the industrial dipentene feed rate 4 L/h, nitrogen flow rate 2 L/min, and reaction temperature range 260 - 310 ℃. The mass fraction of p-cymene in the product was from 86. 26% up to 90. 40% ,and the yield of p-cymene was from 92.65% up to 97.09% at 260 - 280 ℃. The increasing rate of the mass fraction ofp-cymene in the product and the yield of p-cymene were respectively 4. 14% and 4. 44% in the temperature difference of 20 ℃. The mass fraction of p-cymene in the product was between 90.40% and 91.95% ,and the yield of p-cymene was between 97.09% and 98.76% at 280 - 310 ℃. The increasing rate of the mass fraction of p-cymene in the product and the yield of p-cymene was only 1.55% and 1.67% respectively in the temperature difference of 30 ℃. The selected temperature for long-time running was 280℃, and the yield of p-cymene was 97.09% at this condition.