摘要
设计了连续复合精馏装置,精馏段采用浮阀板式结构,提馏段采用φ3×3θ环填料结构.考察了塔顶出料速度、理论塔板数、进料位置及回流比等因素对分离效果的影响.结果表明,复合精馏塔较佳工艺条件为:塔顶出料速度0.32 g/min,理论塔板数41块,进料位置为第30～35块塔板,回流比为2.此时丙酮的质量分数和收率分别达99.08％和98.71％.采用Aspen Plus化工流程模拟软件对连续复合精馏过程进行模拟计算,模拟值与实验值相对误差＜1％.
A continuous composite distillation unit was designed in which a float valve tower was used in the rectification section and 3 × 3θ ring structured packing was used in the stripping section. The effects of tower top effluent rate,theoretical tray number,feed entrance point,and reflux ratio,etc. on the separating effect were studied. The experimental results have shown that the optimum process conditions of composite distillation tower are as follows: tower top effluent rate: 0. 32 g / min,theoretical tray number: 41,feed entrance point: between No. 30 tray and No. 35 tray,reflux ratio: 2. The mass fraction and the yield of acetone are 99. 08% and 98. 71% respectively at such conditions. Simulation calculation was performed for the continuous composite distillation process with Aspen Plus chemical process simulation software,and it was found that the relative error between the simulation value and the experimental value is less than 1%.
出处
《精细石油化工进展》
CAS
2013年第6期49-51,共3页
Advances in Fine Petrochemicals
基金
南通市社会事业科技创新与示范计划(HS2012015)
南通市应用研究计划项目(BK2012007)
关键词
丙二酸亚异丙酯
丙酮
连续复合精馏
isopropylidene malonate
acetone
continuous composite distillation
