کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6588117 | 456474 | 2011 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tailor-made microdevices for maximizing process intensification and productivity through advanced heating
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
For the Kolbe-Schmitt synthesis from resorcinol, large process intensification was achieved recently, using a simple continuous set-up comprising a capillary reactor. However, the productivity of such capillary is low and the design less convenient for scale-up to the pilot or even production scale. Consequently, a tailor-made electrically heated microdevice was developed and successfully tested for the pilot scale using the internal numbering-up approach and enabling external numbering-up. For the Kolbe-Schmitt synthesis in aqueous potassium hydrogen carbonate solution, a productivity of 225Â kg/h at 4Â s residence time and 32% yield was achieved, corresponding to a space-time yield of 38,250Â kg/(m3Â h). As alternative heating approach, continuous microwave heating applying both multi-mode and single-mode devices and using capillary reactors of different dimensions and shapes was investigated and revealed the benefits of a compact design with respect to microwave absorption and of small dimensions for higher space-time yields up to 32,550Â kg/(m3Â h). The first attempt of developing a microstructured plate reactor made of PEEK for continuous microwave heating did not lead to the expected performance. The detected reasons are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 167, Issues 2â3, 1 March 2011, Pages 510-518
Journal: Chemical Engineering Journal - Volume 167, Issues 2â3, 1 March 2011, Pages 510-518
نویسندگان
U. Krtschil, V. Hessel, P. Löb, D. Reinhard, S. Hübschmann, D. Kralisch,