کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1269315 1496871 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High frequency ultrasonic-assisted CO2 absorption in a high pressure water batch system
ترجمه فارسی عنوان
جذب CO2 از طریق فرکانس بالا توسط التراسونیک در یک سیستم بسته با فشار آب بالا
کلمات کلیدی
افزایش التراسونیک؛ جذب؛ دفع؛ انتقال گاز مایع؛ فرکانس بالا
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی


• High frequency ultrasound is a potential alternative for the absorption process.
• The streaming force and fountain formation are the dominant factors.

Physical absorption process is always nullified by the presence of cavitation under low frequency ultrasonic irradiation. In the present study, high frequency ultrasonic of 1.7 MHz was used for the physical absorption of CO2 in a water batch system under elevated pressure. The parameters including ultrasonic power and initial feed pressure for the system have been varied from 0 to 18 W and 6 to 41 bar, respectively. The mass transfer coefficient has been determined via the dynamic pressure-step method. Besides, the actual ultrasonic power that transmitted to the liquid was measured based on calorimetric method prior to the absorption study. Subsequently, desorption study was conducted as a comparison with the absorption process. The mechanism for the ultrasonic assisted absorption has also been discussed. Based on the results, the mass transfer coefficient has increased with the increasing of ultrasonic power. It means that, the presence of streaming effect and the formation of liquid fountain is more favorable under high frequency ultrasonic irradiation for the absorption process. Therefore, high frequency ultrasonic irradiation is suggested to be one of the potential alternatives for the gas separation process with its promising absorption enhancement and compact design.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 33, November 2016, Pages 190–196
نویسندگان
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