مدل‌سازی گرماپویایی فرایند گازی‌سازی پسماند شهری با پلاسمای حرارتی

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه شهید بهشتی

چکیده

گازی‌سازی به‌کمک پلاسمای حرارتی یک‌روش نوین و خلاقانه در مدیریت پسماند است. در این‌مطالعه فرایند گازی‌سازی پسماند جامد شهری در واکنشگاه پلاسمای حرارتی با استفاده از روش کمینه‌سازی انرژی آزاد گیبس، به‌کمک نرم‌افزار اسپن‌پلاس شبیه‌سازی شده‌ و با داده‌های موجود در منابع علمی اعتبارسنجی شده‌است. بیشتر شاخص‌های اجرایی مانند نسبت هوا به پسماند، دمای واکنشگاه، نسبت فشار به پسماند و ارزش حرارتی کمتر گاز با توصیف سین‌گاز تولیدی مطالعه شده‌است، بیشترین میزان هیدروژن 67% به‌دست آمد که برای گازی‌سازی با پلاسمای بخار بوده‌است و بیشترین ارزش حرارتی کمتر گاز متناسب با آن (MJ/Nm3) 6/11 حساب‌شد. با توجه‌به دمای بسیار بالایی که پلاسما
ایجاد می‌کند بسیاری از آلاینده‌‌هایی که در فعالیت روش‌های معمول خلل ایجاد می‌کنند، تأثیری بر این فرایند ندارند.

کلیدواژه‌ها


عنوان مقاله [English]

Thermodynamic Modeling Of Municipal Solid Waste Thermal Plasma Gasification Process

نویسندگان [English]

  • A. Okati
  • M. Khani
  • B. Shokri
Shahid Beheshti University
چکیده [English]

Thermal plasma gasification is a new and innovative method of waste management. In this study, the process of gasification of municipal solid waste in thermal plasma reactor has been simulated using Gibbs free energy minimization method with the help of Aspen Plus software. And validated with data from scientific sources. Most of the operational parameters such as air to waste ratio, reactor temperature, pressure to waste ratio and lower calorific value of gas have been studied by describing the manufactured syngas. The highest hydrogen content was 67%, which was calculated for gasification with steam plasma, And the lowest calorific value of the gas compared to 11/6 (MJ/Nm3) was calculated. Due to the very high temperature created by plasma, many pollutants that are a big problem for conventional methods do not affect this process.

کلیدواژه‌ها [English]

  • gasification
  • Aspen Plus
  • Thermal Plasma
  • Synthesis gas
  • Modeling

 

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