مهندسی شیمی ایران

مهندسی شیمی ایران

بررسی آزمایشگاهی جداسازی کربن‌دی‌اکسید با حلال آبی متیل‌دی‌‌اتانول‌آمین- پیپرازین در میکروراکتور با استفاده از روش سطح پاسخ

نوع مقاله : مقاله پژوهشی

نویسندگان
1 دانشجوی کارشناسی ارشد مهندسی شیمی، دانشگاه صنعتی کرمانشاه
2 دانشیار گروه مهندسی شیمی، دانشگاه صنعتی کرمانشاه
چکیده
جذب کربن‌دی‌اکسید یکی از راه‌های کاهش گازهای گلخانهای است. این مطالعه به بررسی جذب گاز کربن‌دی‌اکسید به‌وسیلۀ محلول آبی متیل‌دی‌‌اتانول‌آمین- پیپرازین با استفاده از یک میکرو کانال بهکمک روش سطح پاسخ پرداختهاست. اثر مشخصه‌های غلظت آمین (50-30 درصد وزنی)، دما (40-20 درجۀ سلسیوس)، شدت جریان حلال ورودی به میکروراکتور (9-3 میلی‌لیتر بر دقیقه) و غلظت ورودی گاز کربن‌دی‌اکسید (15-5 درصد حجمی) بر ضریب کلی انتقال جرم ارزیابی شد. برای بررسی و تحلیل نتایج از نرم‌افزار دیزاین اکسپرت استفاده شد. اهمیت متغیرهای ورودی برای این پاسخ‌ بهترتیب شدت جریان مایع > غلظت آمین > دماست. شدت جریان مایع مؤثرترین متغیر ورودی است؛ زیرا رابطۀ مستقیمی بین شدت جریان مایع و جانشینی مکان‌های جذب وجود دارد. بیشترین مقدار ضریب کلی انتقال جرم 202.50kmol/m3.h.kPa  گزارش شد. این مقدار در شرایط عملیاتی: غلظت 40 درصد وزنی حلال، شدت جریان 9 میلی‌لیتر بر دقیقۀ حلال، دمای عملیاتی 40 درجۀ سلسیوس و غلظت ورودی 10 درصد حجمی گاز کربن‌دی‌اکسید به‌دست آمد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Laboratory Investigation of Carbon Dioxide Separation by Aqeous Methyl Diethanolamine-Piperazine Solvent in a Microreactor Using Response Surface Methodology

نویسندگان English

Sh. Choubtashani 1
H. Rashidi 2
1 M. Sc. Student of Chemical Engineering, Kermanshah University of Technology
2 Associate Professor of Chemical Engineering, Kermanshah University of Technology
چکیده English

Carbon dioxide absorption is one of the ways to reduce greenhouse gases. This study investigates carbon dioxide absorption by methyldiethanolamine-piperazine aqueous solution using a microchannel. The Design Expert software was used to check and analyze the results. The effect of the parameters of amine concentration (30-50 wt.%), temperature (20-40°C), solvent flow entering the microreactor (3-9 ml/min) and carbon dioxide concentration (5-15 vol.%) on the overall mass transfer coefficient was evaluated. The importance of the input variables for this response is in the order of liquid flow > amine concentration > temperature. Liquid flow intensity is the most effective input variable because there is a direct relationship between liquid flow intensity and the succession of absorption sites. The highest value of the overall mass transfer coefficient was reported as 202.50 kmol/m3.h.kPa. This value was obtained in operating conditions: concentration of 40 wt.% of solvent, flow intensity of 9 ml/min of solvent, operating temperature of 40 degrees Celsius and input concentration of 10 vol.% of carbon dioxide gas.

کلیدواژه‌ها English

Carbon Dioxide
Methyl Diodethanolamine
Piperazine
Microreactor
Overall Mass Transfer Coefficient
 
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