Abstract




 
   

Vol. 4, No. 2&3 (Summer 2017) 56-67   

Link: http://www.jree.ir/Vol4/No23/7.pdf
 
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  Solar Heat Utilization in Separation Column Reboilers Case Study: Amine Regenerator in South Pars Gas Complex, Assalouyeh
 
Morteza Keshavarz and Behnam Mostajeran Goortani*
 
( Received: June 15, 2018 – Accepted: September 09, 2018 )
 
 

Abstract    The amine regenerator of acid removal unit in South Pars Gas Complex, Assalouyeh, Iran was modeled. This model was fitted to assess the large scale columns and allow application of solar thermal energy for production of low pressure steam. Heat transfer fluids including Therminol oil, sulfur, or salt melt could be applied to yield thermal energy from a solar collector and to store and transfer it to the reboiler of columns. The Angstrom model was adopted here to simulate solar irradiance. Solar irradiance data for the city of Assalouyeh, during the years of 2009-2014, were collected and applied. The results indicated that based on a reboiler duty of around 21.8 MW, a solar collector area of 148,000 m2 was required with a mass of heat transfer and storage medium of 1247255 kg oil, 1787732 kg salt melt and 3803686 kg sulfur, respectively. This model was applied as an analytical tool to explore and describe the following two problems encountered during real plant operation: fouling in the amine heat exchangers and increasing regenerator pressure.

 

Keywords    Non-equilibrium model, amine regenerator, concentrated solar heat, heat storage, solar collector, Angstrom model

 

چکیده    هدف از این مقاله مدلسازی برج احیا آمین واحد شیرین سازی گاز ترش در کارخانه پارس جنوبی (عسلویه) و امکان سنجی استفاده از انرژی حرارتی خورشیدی درری بویلر برج می­باشد. مدل ارایه شده بر پایه معادلات غیر تعادلی دوفازی جرم و انرژی می­باشد که در آن کلیه خواص فیزیکی و ترمودینامیکی تابع دما، فشار، و ترکیب درصد در آن در نظر گرفته شده است و سنیتیک و ضرایب انتقال جرم و انرژی بصورت تابعی از خواص ذکر شده محاسبه شده و نتایج با برج احیا آمین واقعی تصدیق ­گردیده است. مدل در محیط جی. پرامز بوده و برای مطالعه برج های صنعتی مناسب میباشد و بکارگیری حرارت خورشیدی در تولید بخار کم فشار مورد نیاز برج را بررسی میکند. سه سیال روغن، نمک مذاب، و سولفور به­عنوان سیال ناقل حرارت و ذخیره­ساز پیشنهاد شده­اند. از مدل تابش آنگستروم و از داده­های تابش خورشیدی شهرستان عسلویه طی سالهای 1389 تا 1394 استفاده شده است. نتایج نشان می­دهند که بر پایه 8/21 مگاوات بارحرارتی ری- بویلر برای سیستم ذخیره­سازی به m2 148000 سطح کالکتور، kg 1247255 روغن یا kg 1787732 نمک مذاب یا kg 3803686 سولفور احتیاج می­باشد. از مدل نوشته شده برای مطالعه و توصیف دو مسئله واقعی برج استفاده شده است: رسوب گذاری در کندانسور و بالارفتن دمای آن و ورود ناگهانی گازهای ترش به برج.

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