کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
686922 | 1460095 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimal design of cryogenic distillation columns with side heat pumps for the propylene/propane separation
ترجمه فارسی عنوان
طراحی مطلوب ستون های تقطیر یخ زده با پمپ های گرمای جانبی برای جداسازی پروپیلن / پروپان
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کلمات کلیدی
تقطیر کریوژنیک، پروپیلن بهینه سازی، یکپارچگی حرارت، تبرید،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Propylene is one of the most important products in the petrochemical industry, which is used as raw material for a wide variety of products. The propylene/propane separation is a very energy-intensive process because their boiling points are quite similar. In addition, at atmospheric conditions, their boiling points are â47.6 °C and â42.1 °C, respectively. To separate this mixture conventional columns which operate at high pressure and cryogenic distillation columns which operate at low pressure have been used, however, this approaches are still energy-intensive. This work presents energy-efficient and intensified distillation columns which are adiabatic such as the vapor recompression column (VRC) or diabatic such as columns with heat-integrated stages. A design and optimization procedure, which minimizes the energy consumption in the propylene/propane separation is presented. Conceptual design, superstructure representation, rigorous simulations and mathematical programming techniques are effectively combined to assess all the candidate distillation structures, refrigeration cycles, and heat integration possibilities simultaneously. Results showed that VRC and diabatic distillation columns with heat-integrated stages can reduce the energy consumption between 58 and 75% when compared with conventional distillation at high pressure. Furthermore, the proposed synthesis procedure derived simplified optimal distillation structures with few heat-integrated stages and still attained important energy savings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering and Processing: Process Intensification - Volume 82, August 2014, Pages 112-122
Journal: Chemical Engineering and Processing: Process Intensification - Volume 82, August 2014, Pages 112-122
نویسندگان
J. Rafael Alcántara-Avila, Fernando I. Gómez-Castro, J. Gabriel Segovia-Hernández, Ken-Ichiro Sotowa, Toshihide Horikawa,