بررسی تأثیر زئولیت‌ها در عملکرد کاتالیست‌های فرآیند گوگردزدایی هیدروژنی گازوئیل

نوع مقاله : علمی ترویجی

نویسندگان

1 دانشکده مهندسی شیمی و نفت، دانشگاه صنعتی شریف، تهران، ایران

2 استاد دانشکده مهندسی شیمی دانشگاه صنعتی شریف

3 هیات علمی/ پژوهشگاه صنعت نفت

4 دانشیار شیمی، پژوهشکده توسعه فناوری های کاتالیست،پژوهشگاه صنعت نفت، تهران، ایران

چکیده

حذف ترکیبات گوگردی از برش‌های نفتی به­ویژه گازوئیل به دلیل اثرات منفی ناشی از احتراق که بر سلامت انسان و اتمسفر می‌گذارد؛ به‌عنوان یک مشکل زیست‌محیطی جهانی مطرح می­شود. گوگردزدایی هیدروژنی یکی از روش‌های مؤثر برای حذف کامل ترکیبات حاوی گوگرد از سوخت‌های حمل‌ونقل است. بااین‌حال، برای پاسخگویی به مقررات زیست‌محیطی سخت‌گیرانه‌تر و جلوگیری از مسمومیت کاتالیست­های گران‌قیمت دیگر واحدها، توسعه یک نسل جدید از کاتالیزورهای HDS بسیار کارآمد، موردتوجه بوده است. در این میان کاتالیست­های زئولیتی از اهمیت برجسته‌ای در واکنش‌های شیمیایی مرتبط با صنایع شیمیایی، پتروشیمی و صنایع پالایشی نفت برخوردار می‌باشد. در این مقاله، خلاصه‌ای از پیشرفت‌ها و دستاوردهای اخیر در مورد پایه کاتالیست‌های آمیخته‌شده با زئولیت در فرآیند HDS که ناشی از ظرفیت بالا در حذف ترکیبات گوگردی مقاوم مانند: 4,6 DMDBTو بهبود عملکرد کاتالیست­های فرآیند HDS بیان می­شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of the impact of zeolites on the performance of Diesel Hydrodesulfurization catalysts

نویسندگان [English]

  • Hamid Karami 1
  • Mohammad Kazemeini 2
  • Saeed Soltanali 3
  • Mehdi Rashidzadeh 4
1 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
2 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
3 Assistant Professor/ Research Institute of Petroleum Industry (RIPI)
4 Catalysis Technologies Development Division, RIPI, Tehran, Iran
چکیده [English]

The removal of sulfur-containing compounds (SCCs) from oil cuts, in particular diesel, is considered a global environmental issue due to the negative impacts of combustion products of diesel fuel on human health. Among the various desulfurization methods, Hydrodesulfurization is known as an effective method for the complete removal of SCCs from diesel fuel. Nonetheless, there has been a great interest in the development of a new generation of highly efficient HDS catalysts to respond to stricter environmental regulations and prevent poisoning of expensive catalysts used in other units. In the meantime, zeolite catalysts are of considerable importance in chemical reactions occurring in chemical, petrochemical, and oil refining industries. This paper reviews recent advances and achievements on catalysts mixed with zeolites in the HDS process due to its high capacity in the removal of highly stable SCCs such as 4, 6 dimethyldibenzothiophene and improvement of the performance of HDS catalysts.

کلیدواژه‌ها [English]

  • Hydrodesulfurization
  • Zeolite
  • Support Catalyst
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