بررسی دو فرایند مهم فناوری هیدروژن زدایی پروپان و ضرورت استفاده از این فناوری در صنعت پتروشیمی ایران
محورهای موضوعی : تحلیل بازار پلیمرها و آینده نگری
محمد مهدی برجسته
1
(پتروشيمي سلمان)
حسین زمانی
2
(كارشناس آزمايشگاه)
کلید واژه: پتروشیمی, هیدروژن زدایی از پروپان, پروپیلن, پلی‌پروپیلن, کاتالیزور,
چکیده مقاله :
صنعت پتروشیمی شاخه ای از صنایع شیمیایی است که از مواد اولیه به شکل نفت و گاز برای تولید محصولات صنعتی استفاده می کند. در این مسیر انواع فرایندهای شیمیایی یا فیزیکی برای تولید محصول بهینه به‌کار گرفته می شود. از محصولات کلیدی و راهبردي در صنعت پتروشیمی می توان به پروپیلن و پلی پروپیلن اشاره کرد. هیدروژن زدایی پروپان (PDH-Propane Dehydrogenation) فناوری کاتالیزوری پربازدهی است که برای تبدیل پروپان به پروپیلن و نهایتاً پلی پروپیلن استفاده شده و امروزه مورد توجه گسترده ای قرار گرفته است. پروپیلن یکی از محصولات میانی است که در بسیاری از کاربردهای پتروشیمی مانند ساخت رزین های پلی پروپیلن، اسیدهای اکریلیک، پروپیلن‌گلیکول، آکریلونیتریل، کومن/فنل و سایر محصولات صنعتی، استفاده می شود. معمولاً، پروپیلن از شکستن نفتای مشتق‌شده از نفت به دست می آید و محصول جانبی تولید اتیلن است، اما در حال حاضر به‌منظور تولید گسترده تر پروپیلن، از فرایند هیدروژن زدایی پروپان استفاده می شود. با افزایش تقاضای جهانی برای پروپیلن در بخش خودرو، تولید درب بطری، پارچه، مواد بسته‌بندی و تولید مواد شیمیایی، صنعت پتروشیمی لاجرم با سرعت فزاینده ای به سمت تولید هدفمند پروپیلن، در حال حرکت است. این هدف عمدتاً از طریق هیدروژن زدایی پروپان، که در آن پروپان به‌طور انتخابی هیدروژنه می شود (حذف هیدروژن از جریان پروپان)، قابل دستیابی خواهد بود. بررسی های حاصل از این پژوهش علاوه بر مشخص کردن روش مناسب تر تولید پروپیلن از پروپان (Oleflex یا Catofin)، نشان دهنده این موضوع است که اجرای طرح های PDH در کشور، علاوه بر تأمین نیاز صنایع داخلی، تکمیل زنجیره های ارزش را هم برای صنعت پتروشیمی کشور به ارمغان خواهد آورد.
Petrochemical industry is a branch of chemical industry that uses raw materials in the form of oil and gas to produce industrial products. Various chemical or physical processes are used to produce optimal products. Among the key and strategic products in the petrochemical industry, we can mention propylene and polypropylene. Propane dehydrogenation (PDH-Propane dehydrogenation) is a highly efficient catalytic technology that is used to convert propane into propylene and finally polypropylene, and it has received wide attention today. Propylene is one of the intermediate products used in many petrochemical applications, such as the production of polypropylene resins, acrylic acids, propylene glycol, acrylonitrile, cumene/phenol and other industrial products. Usually, propylene is obtained by cracking naphtha derived from oil and is a byproduct of ethylene production, but currently, in order to produce propylene more widely, propane dehydrogenation process is used. With the increase in global demand for propylene in the automotive sector, the production of bottle caps, fabrics, packaging materials and the production of chemicals, the petrochemical industry is inevitably moving towards the targeted production of propylene. This goal will be achieved mainly through propane dehydrogenation, where propane is selectively hydrogenated (removal of hydrogen from the propane stream). The results of this research, in addition to identifying the most suitable method of producing propylene from propane (Oleflex or Catofin), indicate that the implementation of PDH projects in the country, in addition to meeting the needs of domestic industries, completing the chains It will also bring value to the country's petrochemical industry.
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