تبدیل متانول به آروماتیک‌های سبک با استفاده از نانوزئولیت HZSM5: اثرات شرایط عملیاتی

نوع مقاله : مقاله پژوهشی

نویسندگان
میثم مصطفائی 1
فرانک اخلاقیان طاب 2
1 کارشناسی ارشد، گروه مهندسی شیمی، دانشکده مهندسی، دانشگاه کردستان، سنندج، ایران
2 دانشیار، گروه مهندسی شیمی، دانشکده مهندسی، دانشگاه کردستان، سنندج، ایران
20.1001.1/ijge.2026.2084516.1117
چکیده
این مطالعه درباره استفاده از نانوزئولیت HZSM5 از شرکت زئوکیم برای تولید آروماتیک‌های سبک از متانول است. اثر مقدار نسبت Si/Al بررسی شد و کاتالیست HZSM5 با نسبت Si/Al برابر با ۵۰ انتخاب شد. کاتالیست‌های HZSM5 به‌وسیله روش‌های تخلخل سنجی و تعیین مساحت سطح ویژه، پراش پرتو ایکس و دفع برنامه‌ریزی شده با دمای NH3 تعیین مشخصات شدند. روش طرح مرکب مرکزی برای بررسی اثرات شرایط عملیاتی شامل دمای کوره، مقدار کاتالیست، سرعت جریان‌های متانول و نیتروژن بر روی مقدار متانول باقیمانده در محصول و تولید BTX به‌کاربرده شدند. مقادیر F برای مدل‌های متانول در محصول و تولید BTX به ترتیب برابر با ۲۱/۱۲۳۳ و ۷۷/۱۴۹۷۱ بودند. مقادیر p برای هر دو مدل کوچک‌تر از ۰/۰۰۰۱ بودند. نتایج تجزیه و تحلیل‌های آماری نشان دادند که سرعت جریان نیتروژن تأثیرگذارترین عامل بر تبدیل متانول و تولید BTX است. علاوه بر این‌ها، جملات برهم‌کنش بین عوامل تأثیرات اساسی بر تبدیل متانول و تولید BTX داشتند. شرایط عملیاتی برای حداکثر کردن مصرف متانول و تولید BTX بهینه شدند. عملکرد راکتور در شرایط عملیاتی بهینه؛ موجب حداکثر شدن بازده تولید BTX و متعاقباً فرآیند اقتصادی‌تر می‌شود.
کلیدواژه‌ها
آروماتیک‌های سبک
متانول به آروماتیک
نانوزئولیت HZSM5
روش سطح پاسخ
نسبت Si/Al
شرایط عملیاتی
موضوعات

عنوان مقاله English

Methanol Conversion to Light Aromatics Using HZSM5 Nano Zeolite: Effects of Operating Conditions

نویسندگان English

Meysam Mostafaei 1
Faranak Akhlaghiantab 2
1 M.Sc., Position, Department of Chemical Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran
2 Associate Professor, Department of Chemical Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, Iran
چکیده English

This study employed HZSM5 nano zeolite from Zeochem to produce light aromatics from methanol. The influence of the Si content of the HZSM5 catalysts was investigated, and the HZSM5 catalyst with a Si/Al ratio of 50 was selected. The HZSM5 catalysts were characterized using porosimetry and determination of specific surface area, X-ray diffraction, and NH3 temperature-programmed desorption techniques. The central composite design method was employed to investigate the effects of the operating conditions, including furnace temperature, catalyst dosage, methanol, and nitrogen flow rates, on the methanol in the product and BTX production. The F-values were 1233.21 and 14971.77 for methanol in product and BTX production model; respectively. The p-values were less than 0.0001 for both models. Statistical analysis revealed that the nitrogen flow rate was the most significant factor affecting methanol in the product and BTX production. Furthermore, the interaction between these factors exerted a more substantial influence on methanol in the product and BTX production. The performance of the reactor in the optimized operating conditions causes maximum BTX yield and consequently more economic process.

کلیدواژه‌ها English

Light Aromatics
Methanol to Aromatics
HZSM5 Nano Zeolite
Response Surface Method
Si/Al Ratio
Operating Conditions
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  • تاریخ دریافت 14 بهمن 1404
  • تاریخ بازنگری 28 خرداد 1405
  • تاریخ پذیرش 30 خرداد 1405