بررسی اثر دما و زمان اقامت در بازیافت اجزاء فیلتر روغن به روش پیرولیز

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه فرایند، دانشکده مهندسی شیمی، دانشگاه تربیت مدرس، تهران، ایران

2 دانشگاه تربیت مدرس دانشکده شیمی

10.22034/jfnc.2024.425226.1365

چکیده

فیلترهای روغن استفاده شده هم خطرات زیست‌محیطی فراوانی را در بردارند و هم حاوی اجزاء ارزشمندی برای استفاده مجدد هستند که بازیافت آن‌ها را توجیه می‌کنند. در این طرح در میان روش‌های مختلف بازیافت از روش پیرولیز استفاده شده است. در این مطالعه رفتار هر یک از مواد تاثیرگذار در تولید باقی‌مانده (روغن کارکرده، واشر لاستیکی، کاغذ فیلتر) با تغییر دو پارامتر دما و زمان اقامت به‌صورت جداگانه بررسی شد. آزمایش‌ها در دماهای 360، 440 و 520 درجه سانتی‌گراد و دو زمان اقامت 30 و 90 دقیقه با جریان نیتروژن ثابت 200ml/min انجام شده و میزان باقی‌مانده تولیدی پس از هر آزمایش‌ اندازه‌گیری شد. در پیرولیز روغن کارکرده با افزایش دما و زمان اقامت، تولید باقی‌مانده به دلیل پیشروی واکنش‌های شکست حرارتی اولیه خوراک ابتدا کاهش یافت و سپس به دلیل شروع شکست حرارتی ثانویه مواد هیدروکربنی موجود در راکتور کمی افزایش یافت. در پیرولیز واشر لاستیکی با افزایش دما و زمان اقامت، روند تولید باقی‌مانده همواره کاهشی بود. این رفتار نشان‌دهنده پیشرفت واکنش پیرولیز و شکست حرارتی اولیه مواد و همچنین تبخیر مواد هیدروکربنی جامد واشر در دما های بالا است. در بررسی تاثیر دما و زمان ماند بر پیرولیز کاغذ فیلتر مشاهده شد که در اثر افزایش دما و زمان ماند بازده باقی‌مانده تولید شده کاهش یافت که می-تواند در اثر شکست حرارتی اولیه کاغذ فیلتر یا شکست حرارتی دوباره باقی‌مانده باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Studying the Influence of Temperature and Residence Time on the Recovery of Oil Filter Components via Pyrolysis

نویسندگان [English]

  • Mohammad Najafi Dorcheh Kalmarani 1
  • Ramin Karimzadeh 2
1 Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran
2 Tarbiat Modares University
چکیده [English]

Used oil filters contain both significant environmental hazards and valuable components suitable for reuse, justifying their recycling. Among various recycling methods, pyrolysis has been employed in this project. This study investigates the behavior of each influential material in residue production, including used oil, rubber gasket, and filter paper, with the alteration of two parameters: temperature and residence time, individually. Experiments were conducted at temperatures of 360, 440, and 520 degrees Celsius, with two residence times of 30 and 90 minutes, under a constant nitrogen flow rate of 200 ml/min. The residue yield was measured after each experiment. In the pyrolysis of used oil, with an increase in temperature and residence time, the residue production initially decreased due to the advancement of primary thermal cracking reactions in the feed. However, secondary thermal cracking of hydrocarbons present in the reactor led to a subsequent increase in residue production. In the pyrolysis of rubber gasket, the residue production trend consistently decreased with rising temperature and residence time, indicating the progression of pyrolysis and initial thermal cracking, as well as the vaporization of solid hydrocarbon materials at higher temperatures. In the examination of the effect of temperature and residence time on filter paper pyrolysis, it was observed that increasing these parameters reduced the efficiency of residue production. This reduction could be attributed to either the initial thermal cracking of the filter paper or the secondary thermal cracking of the produced residue.

کلیدواژه‌ها [English]

  • : Used oil filters
  • Pyrolysis
  • Ferrous scrap
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