بررسی آزمایشگاهی فرایند جذب کربن‌دی‌اکسید پس- احتراقی با استفاده‌از محلول آبی تری‌اتانول‌آمین اصلاح‌شده با ال- آرژنین در میکروراکتور

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد مهندسی شیمی، دانشگاه صنعتی کرمانشاه

2 استادیار مهندسی شیمی، دانشگاه صنعتی کرمانشاه

چکیده

مطالعۀ حاضر، عملکرد جذب ‌دی‌اکسیدکربن را در حضوراسید آمینۀ ال- آرژنین به‌عنوان بهبود‌دهنده در محلول آبی تری‌اتانول‌آمین  (TEA)در یک میکروراکتور بررسی می­کند. برای بررسی آزمایشگاهی فرایند جذب، از محلول آبی (30+0 درصد وزنی)ARG-TEA  و مخلوط TEA و آرژنین در غلظت‌های (26+4 درصد وزنی) ARG-TEA، (22+8 درصد وزنی) و (18+ 12 درصد وزنی) تحت نرخ جریان حلال 3-9 میلی‌لیتر بر دقیقه و دبی گاز ورودی 120- 300 میلی‌لیتر بر دقیقه در دمای 45 درجۀ سلسیوس استفاده شد. عملکرد انتقال جرم براساس مقادیرتجربی ضریب کلی انتقال جرم حجمی برمبنای فاز گاز (KGaV)، بازده جذب (AE) و شار انتقال جرم حجمی (NAaV) ارزیابی شد. نتایج این بررسی نشان داد که در دبی متوسط مایع و گاز، با افزایش غلظت آرژنین در محلول آبی تا 12 درصد وزنی، مقادیر KGaV در محلول آبی حاوی 30 درصد وزنی TEA از مقدار 09/11 به 83/37 کیلومول بر متر مکعب‌ساعت‌کیلوپاسکال در محلول (18+12 درصد وزنی) ARG-TEA بهبود می‌یابد، به‌طوری‌که تحت این شرایط بازده جذب تا حدود 40 درصد افزایش یافت.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Experimental Study of Post-Combustion CO2 Capture Process Using Aqueous Solution of Triethanolamine Enhanced by L-Arginine in a Micro-Reactor

نویسندگان [English]

  • B. Valadian 1
  • peyvand Valeh-e-sheyda 2
1 M. Sc. Student of Chemical Engineering, Kermanshah University of Technology
2 Assistant Professor of Chemical Engineering, Kermanshah University of Technology
چکیده [English]

The present study investigates the performance of CO2 absorption in the presence of amino acid L-arginine (ARG) as a promoter in an aqueous solution of triethanolamine (TEA) in a micro-reactor. In order to experimentally evaluate the absorption process, the aqueous solution of 30% TEA and a mixture of TEA and arginine were used in four concentrations of ARG-TEA (0+30 wt%), (4+26 wt%), (8+22 wt%), and (12+18 wt%) under the solvent flow rate of 3-9 ml/min and the inlet gas flow rate of 120-300 ml/min at the temperature of 45 ℃. The experimental mass transfer performance was evaluated in terms of the overall volumetric gas-phase mass transfer coefficient (KGaV), absorption efficiency (AE), and volumetric mass transfer flux (NAaV). The results of this investigation illustrated that in the medium flow rate of solvent and gas, by increasing the arginine concentration in the aqueous solution (30 %wt TEA) up to 12 wt% in the TEA+ARG (12+18%wt), the values of KGaV increased from 11.09 to 83.37 kmol/m3 kPah so that the absorption efficiency improves up to about 40%.

کلیدواژه‌ها [English]

  • Carbon Dioxide
  • Arginine
  • Triethanolamine
  • Overall Mass Transfer Coefficient
  • Micro-Reactor

مراجع

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مهندسی شیمی ایران
دوره 22، شماره 129
مهر و آبان 1402
صفحه 124-136

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