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انتاج ايثايل ثلاثي بينوتايل ايثر من ثلاثي بيوتايل الكحول وايثايل الكحول باستخدام البيتا زيولايت المصنع من قشور الرز العراقي بواسطة التقطير التفاعلي == Production of Ethyl Tert - Butyl Ether From Tert - Butyl Alcohol And Ethyl Alcohol Catalyzed By ? - Zeolite Synthesis From Iraqi Rice Husk In Reactive Distillation
Author name:
مؤيد خليل ابراهيم
Supervisor name:
ودود طاهر محمد | عمار صالح عباس
General topic:
Chemical Engineering
Specific topic:
Chemical Engineering
Degree:
Doctorate
University:
University of Baghdad - College Of Engineering - Department Of Chemical Engineering
Language:
English
University location:
Baghdad
First pages:
38T301 - p.pdf
Abstract:
تم انتاج مادة اثل ثلاثي بيوتايل ايثر من تفاعل ثلاثي البيوتانول والايثانول باستخدام تقنية التقطير التفاعلي وبوجود العامل المساعد بيتا زيولات المحضر محليا من قشور الارز العراقي كعامل مساعد.ثلاثة انواع من العامل المساعد تم تحضيرھا من قشور الرز العراقي باع | This work was conducted to study the production of ethyl tert - butyl ether from tert - butanol and ethanol by using reactive distillation technique in the presence of locally prepared ? - zeolite catalyst from Iraqi rice husk Three types of catalyst have been prepared from Iraqi rice husk as silica source and used in this work with which are ? - zeolite with three different Si/Al ratios (10,20 and 30) for comparing with commercial ? - zeolite which purchased from China to compare its characterization and activity in the production of ethyl tert - butyl ether from tert - butanol and ethanol.Kinetic of reaction of tert - butanol and ethanol to produce ethyl tert - butyl ether was studied separately by using batch reactor. The experiments were carried out under operating conditions of; temperature of (323,333 and 343k), four catalyst types and feed mole ratio ethanol/tert - butanol varied from (1.23 - 1.96) using excess ethanol, the rate equation at 323 k for ethyl tert - butyl ether was found as shown The Arrehnius equations of constants of reactions rate were found as shown : k1 = exp (22.769 - 9912.5 /T)? k2 =exp (37.952 - 11335 /T) kw = exp ( - 40.03 + 9644 /T) The main study includes the continuous packed reactive distillation column to produce ethyl tert - buty ether. The tert - butanol and ethanol reaction was carried out by continuous packed reactive distillation column using the three types of the prepared ? - zeolites and commercial ? - zeolite at atmospheric pressure, The operating variables studied the tert - butanol feed varied from (1 - 7) ml/min., recycle ratio varied from (1 - 7) and weight of catalyst used was varied from (10 - 40) g.The analysis of samples produced from reaction was carried out using gas chromatography GC showed that the tert - butanol conversion was 100% for all types of ? - zeolite with best yield 88% toward ethyl tert - butyl ether by using prepared ? - zeolite with Si/Al of 10, tert - butanol feed flow rate 3 ml/min., weight of catalyst 20g, recycle ratio 3. The result showed that the yield of ethyl tert - butyl ether was increasing from 64% to 88% when the operating conditions varied from lower to upper limit using prepared ? - zeolite with Si/Al of 10. Also, the results showed that, the prepared ? - zeolite with Si/Al of 10 gives better yield than commercial one.
