Prediction of H2S and CO2 Solubility in Aqueous MDEA and MDEA/PZ Solutions Using ELECNRTL and ACID GAS Packages

Sabbagh, Omid; Vahidi Ferdowsi, Maysam; Fanaei, Mohammad Ali

Prediction of H2S and CO2 Solubility in Aqueous MDEA and MDEA/PZ Solutions Using ELECNRTL and ACID GAS Packages

Document Type : Original Article

Authors

¹ Department of Chemical Engineering Ferdowsi, University of Mashhad, Mashhad, Iran

² Department of Chemical Engineering, Ferdowsi University of Mashhad, Iran

Abstract

In this study, the solubility of acid gases of hydrogen sulfide and carbon dioxide in MDEA and MDEA/PZ aqueous solutions was evaluated by different thermodynamic packages. Comparison of modeling results with a series of laboratory and industrial data released from 1997 to 2010 indicates the high accuracy of ACID GAS thermodynamic package (Aspen HYSYS 8.3) to prediction of acid gases solubility in the mentioned solutions compared to the ELECNRTL thermodynamic package (Aspen plus V8.2), especially in the range of acid gases operational concentration in the gas refineries.

Keywords

20.1001.1.25885596.2018.3.1.1.7

Article Title [Persian]

پیش‌بینی حلالیت گازهای H2S و CO2 در محلول‌های MDEA و MDEA/PZ توسط بسته‌های ترمودینامیکی ACID GAS و ELECNRTL

Authors [Persian]

امید صباغ ¹
میثم وحیدی فردوسی ²
محمدعلی فنایی ²

¹ گروه مهندسی شیمی، دانشگاه فردوسی مشهد، مشهد، ایران

² گروه مهندسی شیمی، دانشکده مهندسی، دانشگاه فردوسی مشهد، مشهد، ایران

Abstract [Persian]

در این مطالعه، میزان حلالیت گازهای اسیدی سولفید هیدروژن و دی‌اکسید‌کربن در محلول‌های آبی MDEA و MDEA/PZ توسط بسته‌های مختلف ترمودینامیکی مورد ارزیابی قرار گرفته است. مقایسه نتایج مدل‌‌سازی با مجموعه‌ای از اطلاعات صنعتی و آزمایشگاهی که از سال 1997 تا 2010 منتشر گردیده، نشان از دقت بالای پیش‌بینی حلالیت گازهای اسیدی در محلول‌های مذکور با بسته ترمودینامیکی ACID GAS (نرم‌افزار اسپن ‌هایسیس 3/8) در مقایسه با بسته ترمودینامیکی ELECNRTL (نرم‌افزار اسپن پلاس 2/8) بویژه در محدوده غلظت‌های عملیاتی واحدهای شیرین سازی گاز طبیعی دارد.

Keywords [Persian]

PZ
MDEA
بسته ترمودینامیکی
حلالیت گازهای اسیدی
ACID GAS
ELECNRTL

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