Experimental and dnamic simulation of catalsed esterification of N-butanol and acetic acid in reactive distillation column

مقدم أطروحة جامعية

Baqir, Muhammad Sad

مشرف أطروحة جامعية

Sukkar, Drkhalid A.
Shakur, Zaydun Muhsin

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم الهندسة الكيمياوية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2011

الملخص الإنجليزي

-In this work, the production of n-butyl acetate was carried out successfully using solid catalysts in a continuous reactive distillation column.

The present study includes three parts;kintects study, reactive distillation unit, and mathematical modeling.

In the first part the kinetic of the esterification reaction to produce n-butyl acetate in a heterogeneous catalyzed batch reactor was studied, using n-butanol and acetic acid as reactants.

Two types of catalysts Dowex-50 and Amberlite CG-50 were investigated.

The catalysts were modified with 0.1 N HCl.

The results obtained from kinetics study show that the modified Dowex-50 catalyst gives the highest conversion of n-butanol and acetic acid to produce n-butyl acetate.

The n-butanol conversion is 67% in batch reactor with activation energy equal to39.975 kJ/mol.

On the other hand, a Pseudo-Homogeneous Model was developed to describe the reaction kinetics.

The comparison between calculated results and experimental results shows a very good agreement between them.

In the second part, a continuous reactive distillation column made of QVF glass was constructed.

The effect of reflux ratio, acetic acid flow rate and heat duty on the performance of reactive distillation with the best catalyst (modified Dowex-50) was studied.It is concluded that, when the reflux ratio increases the temperature level along the column decreases.

On the other hand, the increase of acetic acid flow rate or heat duty lead to a slightly affect on temperature level.Also, it was noted that when the acetic acid flow rate increases, the reaction zone temperature increases too, while, an opposite results was noted, when heat duty is increased the reaction zone temperature decreased.

In the present work, unsteady state mathematical analysis was derived using MATLAB program.

The set of algebraic equations governing composition profile in a reactive distillation column are solved by using Gausses elimination method.The modelwas used effectively to describe: compositions, flowrates and temperatures inside the column.The results indicated that, the conversion in reactive distillation increases directly with increasing the reflux ratio.On the other hand, it was noted that the decreasing of the ratio between stages holdup and reboiler holdup will increase the speed of column response and decrease the time to reach steady state value in dynamic distillation columns.

التخصصات الرئيسية

الكيمياء

الموضوعات

• التقطير
• حمض الخليك

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305170