تحلیل آماری و فرآیندی پتنت های ایزومریزاسیون نفتای سبک

نوع مقاله: علمی ترویجی

نویسندگان

1 مهندسی شیمی، مهندسی، دانشگاه شیراز،شیراز، ایران

2 دانشجوی دکتری دانشگاه ساسکاچوان

3 دانشجوی کارشناسی دانشگاه شیراز

4 دانشکده خمهنسی شیمی، نفت و گاز دانشگاه شیراز

چکیده

پتنت‌های تاثیرگذار در توسعه فرآیند ایزومریزاسیون نفتای سبک بصورت فنی به 5 گروه فرآیند، کاتالیست، جداسازی، راکتور و پیش تصفیه دسته‌بندی شدند. تحلیل آماری پتنت ها نشان داد که بیشترین تعداد پتنت در زمینه فرآیند یا کاتالیست و اکثرا توسط شرکت های UOP و شل ارائه شده‌اند. در بین پتنت‌های ثبت شده، پتنت‌های ارائه شده توسط شرکت UOP پر مراجعه‌ترین پتنت‌ها می‌باشند. همچنین طبق نتایج بدست آمده، سه گروه کاتالیست‌های آلومینیوم کلراید، زئولیتی و اکسید فلزی مانند پلاتین، پالادیوم و رودیوم روی پایه‌ی آلومینای کلره استفاده شده است که با توجه به خوراک، شرایط عملیاتی و محصول مورد نظر، کاتالیست بهینه انتخاب می‌شود. تفاوت اصلی فرآیندهای پیشنهادی در نحوه ی جداسازی نرمال پارافین از ایزوپارافین‌ها می‌باشد. برای جداسازی پارافین های شاخه دار از نرمال پارافین‌ها از روش‌های غربال مولکولی یا برج‌های DIH (برج جداکننده ایزوهگزان) و DIP (برج جداکننده ایزوپنتان) در ورودی یا خروجی راکتور استفاده می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Patent Analysis of Light Naphtha Isomerization from Statistical and Process Perspective

نویسندگان [English]

  • Mojtaba Binazadeh 1
  • Zahra Alipour 2
  • Mohsen Goodarzi 3
  • Fereidoun Esmaeilzadeh 4
1 School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
2 PhD Student University of Saskatchewan
3 BSc Student Shiraz University
4 School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
چکیده [English]

The light naphtha isomerization patents were technically categorized into 5 groups of process, catalyst, isolation, reactor and pre-treatment. The largest number of patents is in the process and catalyst fields mainly filed by UOP and Shell companies. The highest number of patents were registered in the 1960s. The patents published by UOP are the most widely cited. Largest number of patents are filed in the United States which reveals that US is the main target market for isomerization process. Three groups of aluminum chloride, zeolite and metal oxide catalysts such as platinum, palladium and rhodium have been used on chlorine alumina support, which is chosen as the optimal catalyst according to the feed, operating conditions and product. There are two main separation techniques for fractionation of normal paraffin from isoparaffin; namely, molecular sieve towers or DIH towers (Deisohexanizer) and DIP (Deisopentanizer) which are placed before or after the reactor.

کلیدواژه‌ها [English]

  • Isomerization
  • light naphtha
  • paraffinic hydrocarbons
  • pentane
  • Hexane
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