شبیه‌سازی و تحلیل اکسرژی منابع مصرف‌کننده گازهای بازیابی شده از شبکه فلر در پالایشگاه گازی

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه مهندسی شیمی ، دانشکده فنی مهندسی ، دانشگاه اراک، ایران

10.22078/pr.2024.5373.3389

چکیده

این مقاله به‌منظور کاهش آلودگی زیست‌محیطی و بهینه‌سازی مصرف انرژی، برروی شبیه‌سازی و تحلیل اکسرژی سامانه بازیابی گازهای شبکه فلر در یک پالایشگاه گازی و منابع مصرفی آن تمرکز دارد. در فرآیند استخراج و فرآوری نفت و گاز، مقادیر زیادی از گازهای استفاده نشده به‌سمت شبکه فلر هدایت می‌شوند که این امر باعث آلودگی زیست‌‌محیطی و هدر رفت اقتصادی می‌شود. شبیه‌سازی انجام شده فرآیند نشان می‌دهد که kg/hr 27800 گاز فلر از شبکه فلر پالایشگاه، با فشار bar 9 دمای C° 25 قابل بازیابی است. یکی از نکات مهم در زمینه سامانه‌های بازیابی فلر، مصرف بهینه گازهای بازیابی شده است که تحلیل اکسرژی برای شرایط مختلف این امکان را فراهم می‌نماید. در این مقاله، دو سناریو برای مصرف گازهای فلر ارائه شده است. در سناریوی اول، گازهای بازیابی شده تا فشار bar 70 فشرده شده و سپس به واحد شیرین‌سازی گاز پالایشگاه تزریق می‌شود که بازده اکسرژی محاسبه شده برای این سناریو 69% است. در سناریوی دوم، گازهای بازیابی شده فلر به سمت کمپرسورهای موجود در واحد میعانات‌گازی هدایت می‌شوند که بازده اکسرژی محاسبه شده برای این سناریو بیش از 78% می‌باشد. بر‌اساس نتایج شبیه‌سازی و تحلیل اکسرژی، این نتیجه حاصل شد که تزریق گازهای فلر بازیابی شده به کمپرسورهای واحد تثبیت میعانات‌گازی، بهترین راهکار برای بهره‌وری اقتصادی بیشتر از گازهای بازیابی شده است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Simulation and Exergy Analysis of Consuming Resources of Gases Recovered from the Flare Network in Gas Refinery

نویسندگان [English]

  • Mahdi Enayati
  • Sayed Mohsen Hosseini
  • Fahime Parvizian
Department of Chemical Engineering, Faculty of Engineering, Arak University, Iran
چکیده [English]

This paper focuses on the simulation and exergy analysis of flare gas recovery systems and their consuming resources in a gas processing plant, with the aim of minimizing environmental pollution and maximizing energy utilization. During the extraction and processing of oil and gas, significant amounts of unused gases are typically directed to flares, resulting in both environmental pollution and economic waste. Through simulation, it has been determined that approximately 28,700 kg/hour of flare gases can be recovered from the refinery’s flare network, operating at a pressure of 9 bar and a temperature of 25 degrees Celsius. To optimize the consumption of the recovered gases, exergy analysis has been conducted for different consumption scenarios. Two distinct scenarios for the consumption of flare gases are presented. In the first scenario, the recovered gases are compressed to a pressure of 70 bar and injected into the gas sweetening unit of the refinery. Moreover, the calculated exergy efficiency for this scenario is 69%. In the second scenario, the recovered gases are directed to the compressors available in the gas condensate unit. The calculated exergy efficiency for this scenario exceeds 78%. Ultimatly, based on the simulation and exergy analysis results, it is concluded that injecting the recovered flare gases into the compressors of the gas condensate stabilization unit offers the most optimal utilization of the recovered gases. This finding highlights the potential for reducing environmental pollution, minimizing waste, and maximizing the economic resources available in the gas processing plant.

کلیدواژه‌ها [English]

  • Flaring
  • Recovery of Flare Gas
  • Simulation
  • Exergy
  • Refinery
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