ساخت و به کارگیری کاتالیست منولیتی توده‌ای به عنوان یک کاتالیست نوین در سنتز فیشر- تروپش

نوع مقاله: مقاله پژوهشی

نویسندگان

1 پژوهشگاه صنعت نفت، پژوهشکده گاز

2 دانشگاه تهران، دانشکده مهندسی شیمی

چکیده

در این تحقیق کاتالیست منولیتی توده‌ای، به عنوان یک ایده جدید، با استفاده از کاتالیست آهن سنتز فیشر- تروپش و به کمک روش‌های اکستروژن و قالب زنی فشاری به صورت آزمایشی تهیه و اثر پارامترهای مختلف بر کیفیت و استحکام آن ارزیابی شده است. روش قالب‌زنی، نتایج خوبی نشان داده و بهترین شرایط رطوبت 5%، مقدار چسباننده 25-20% و فشار قالب زنی kg/cm2 5800-3500 به دست آمد. همچنین عملکرد و کارایی این کاتالیست در سنتز فیشر- تروپش به صورت آزمایشی بررسی و تحلیل شده است. نتایج حاکی از دست‌یابی به مزایای قابل توجهی از جمله کاهش محدودیت انتقال جرم و افت فشار و افزایش درصد مصرف کاتالیست می‌باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Manufacturing and Application of Bulk Monolithic Catalyst as a Novel Catalyst for Fischer-Tropsch Synthesis

نویسندگان [English]

  • Akbar Zamaniyan 1
  • Yadollah Mortazavi 2
  • Abbas Ali Khodadadi 2
  • Farzad Bahadoran 1
  • Solmaz Dialameh 1
1 School of Chemical Engineering, University College of Engineering, University of Tehran
2 School of Chemical Engineering, University College of Engineering, University of Tehran
چکیده [English]

Catalytic gas-solid reactions are used widely using conventional packed bed reactors. Conventional packed bed reactors have some difficulties and disadvantages such as pressure drop, intra particle diffusion limitation, flow channeling and so on. Recently, to overcome these difficulties, research has led to the use of structured catalysts such as monolithic reactor instead of a random packed bed. Herein, using an iron based Fischer-Tropsch synthesis catalyst, a novel bulk monolithic catalyst is manufactured by extrusion and molding methods. The effect of various parameters on monolith quality and strength are experimentally evaluated. The molding method showed good results and the best conditions are found at 5% moisture; 20-25% binder, and 3500-5800 kg/cm2 pressure. Also, the performance of the catalyst in Fischer Tropsch synthesis is tested experimentally. The results show that this novel concept leads to superior advantages such as lower intra particle mass transfer limitation and pressure drop and more catalyst usage.

کلیدواژه‌ها [English]

  • Catalyst
  • Structured
  • Fischer Tropsch
  • Monolith
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