کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4987451 | 1368028 | 2016 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasonic precipitation of manganese carbonate: Reactor design and scale-up
ترجمه فارسی عنوان
بارش سونوگرافی کربنات منگنز: طراحی و اندازه گیری راکتور
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کلمات کلیدی
بارش التراسونیک، مهندسی ذرات، طراحی راکتور، افزایش مقیاس،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
This study discusses the reactor design and a possible scale-up strategy for ultrasonic precipitation of manganese carbonate. Preliminary experiments, performed in a 200Â mL continuously stirred tank reactor (CSTR) equipped with an ultrasonic transducer or probe, identified the importance of generating a homogenously distributed ultrasonic field of about 40Â kHz to improve the sphericity of the powder. In this lab-scale reactor, spherical particles with a tap density of more than 2.0Â g/cm3 were obtained under sonication, compared to only 1.3Â g/cm3 during silent conditions. Alternatively, a design with an ultrasonic unit in a recirculation loop resulted in a similar relative improvement compared to silent conditions. However, since the recirculation reactor did not reach a tap density of above 2.0Â g/cm3, the scale-up of this configuration was discarded. In the end, a basic CSTR was scaled to 50Â L by using a single radial oscillating probe, operating at 40Â kHz and 1Â kW. This semi-pilot scale reactor was able to produce particles with a tap density of about 90% of the value attained at lab-scale although the power density was reduced by more than half.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Research and Design - Volume 115, Part A, November 2016, Pages 131-144
Journal: Chemical Engineering Research and Design - Volume 115, Part A, November 2016, Pages 131-144
نویسندگان
B. Gielen, Y. Thimmesch, J. Jordens, G. Janssen, L.C.J. Thomassen, T. Van Gerven, L. Braeken,