بررسی کاتالیست‌های اسیدی جامد فرآیند آلکیلاسیون ایزوبوتان- بوتن

نوع مقاله : ترویجی

نویسندگان

1 دانشجوی دکتری مهندسی شیمی، دانشکده نفت و مهندسی شیمی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران

2 دکتری، استادیار مهندسی شیمی، دانشکده نفت و مهندسی شیمی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران

3 دکتری، استادیار مهندسی شیمی، پژوهشکده توسعه فناوری‌های کاتالیست، پژوهشگاه صنعت نفت، تهران، ایران

چکیده

خودروها منبع اصلی آلودگی هوا هستند. با توجه به الزامات سختگیرانه حفاظت از محیط زیست، استانداردهای بنزین به طور مداوم از طریق کاهش محتوای الفین، گوگرد و ترکیبات آروماتیکی در حال ارتقا هستند. آلکیلاسیون ایزوبوتان با بوتن یکی از مهمترین روش‌ها جهت تولید بنزین با عدد اکتان بالا به شمار می‌رود. گرچه فرآیند پالایشگاهی ایزوبوتان با اولفین‌ها بر مبنای کاتالیست‌های اسیدی مایع همچون هیدروفلوئوریک اسید و سولفوریک اسید به لحاظ تجاری موفق بوده است اما استفاده از این کاتالیست‌ها در فرآیند آلکیلاسیون مشکلات زیست محیطی، بهداشتی و هزینه‌های عملیاتی بالایی به همراه دارد. کاتالیست‌های اسیدی جامد بخصوص زئولیت‌ها به‌ دلیل عملیات‌ پذیری بالا و هزینه کمتر تعمیرتجهیزات، عدم ایجاد مشکلات زیست محیطی و دارا بودن خواص برجسته ساختاری، کاندیداهای مناسب‌تری جهت ارتقاء فرآیند آلکیلاسیون ایزوبوتان/ بوتن می‌باشند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigation of Solid Acid Catalysts for Alkylation of Isobutane-Butene Process

نویسندگان [English]

  • Parvin Mohebbi 1
  • Sima Askari 2
  • Saeed Soltanali 3
  • Seyyed Javid Royaei 3
1 PhD. Student, Faculty of Petroleum and Chemical Engineering, Science and Research Branch, Tehran, Iran
2 PhD. Assistant Professor, Faculty of Petroleum and Chemical Engineering, Science and Research Branch, Tehran, Iran
3 PhD. Assistant Professor, Catalyst Technology Development Division, Research Institute of Petroleum Industry, Tehran, Iran
چکیده [English]

The Automotive exhaust emission is the predominant source of air pollution. With the increasingly stringent environmental protection requirements, the standards of gasoline are constantly upgrading via reducing the content of olefins, sulfur and aromatics. Alkylation of isobutane with butene is one of the most important ways for production of gasoline with high octane number. Although, the isobutane with olefins alkylation refinery process based on liquid acid catalysts such as sulfuric acid and hydrofluoric acid has been commercially successful but the use of these catalysts in the process of alkylation has environmental, health and high operatin costs problems. Solid acid catalysts especially zeolites due to their high operability and lower cost of equipment, no environmental problems and outstanding structural properties, are more suitable candidates for improving the isobutane/butene process. So, replacing these catalysts with solid acid catalysts is one of the most important research goals in the field of catalysts.

کلیدواژه‌ها [English]

  • Alkylate
  • Octane Number
  • Zeolite
  • Liquid Acid Catalysts
  • Olefins

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