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بررسی اثر لیگنین بر اثرات منفی فرآیند برشتهسازی در تولید بریکت از باگاس | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 8، دوره 37، شماره 4 - شماره پیاپی 81، دی 1401، صفحه 346-360 اصل مقاله (1.09 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2022.359635.1725 | ||
| نویسندگان | ||
| مجید صالحی* 1؛ محمد طلایی پور2؛ حبیب الله خادمی اسلام3؛ بهزاد بازیار4 | ||
| 1دانشجوی دکترای گروه صنایع چوب و کاغذ، دانشکده منابع طبیعی و محیطزیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران | ||
| 2دانشیار، گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی و محیطزیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، ایران. | ||
| 3استاد، گروه صنایع چوب و کاغذ، دانشکده منابع طبیعی و محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران.ایران | ||
| 4عضو هیأت علمی ، گروه مهندسی صنایع چوب و کاغذ، دانشکده منابع طبیعی و محیطزیست، دانشگاه آزاد اسلامی، واحد علوم تحقیقات تهران، ایران، | ||
| چکیده | ||
| استفاده از پیشتیمارهای مختلف ازجمله فرآینده برشتهسازی بهمنظور افزایش کارایی و بهینهسازی قابلیت مصرف بریکتهای سوختی در سال-های اخیر توجه زیادی را به خود جلب کردهاند. از این رو در این پژوهش از پیشتیمار برشتهسازی با دمای ºC 180 برای اصلاح زیست توده باگاس استفاده شد. علاوه براین از عامل اتصال دهنده لیگنین در سطوح 2، 5 و 10% استفاده شد. بریکتهای سوختی با استفاده از دستگاه بریکتسازی دستی با وزن 30 گرم تهیه شدند. ویژگیهای فیزیکی، مقاومتی و حرارتی بریکتهای حاصل مورد بررسی قرار گرفتند. نتایج نشان دادند که پیشتیمار برشتهسازی ازطریق افزایش دانسیته حجمی بریکتهای حاصل و افزایش میزان کربن ثابت تا حدود 50% توانسته ارزش حرارتی بریکتها را تا حدود 10% افزایش دهد ازطرفی هم این فرآیند منجربه کاهش مقاومت فشاری بریکتهای حاصل شد که استفاده از لیگنین بهعنوان عامل اتصالدهنده توانست میزان قابلتوجهای از این افت مقاومت را جبران کند. نتایج نشان دادند که میزان مواد فرار بریکتها با پیشتیمار برشتهسازی حدود 9% کاهش یافت که تأثیر قابلتوجهای بر کاهش آلایندگی این بریکتها دارد. در بررسی اثر لیگنین نیز مشاهده شد که با افزایش میزان مصرف لیگنین میزان دانسیته و ارزش حرارتی نیز افزایش یافتند. بهطورکلی نتایج این پژوهش نشان میدهند که استفاده از عامل اتصالدهنده لیگنین همراه با پیشتیمار برشتهسازی میتواند تولید بریکتهای سوختی با کیفیت بالا از باگاس را ممکن سازد. | ||
| کلیدواژهها | ||
| زیستتوده؛ سوختهای فسیلی؛ بریکت؛ باگاس؛ پیشتیمار برشتهسازی | ||
| عنوان مقاله [English] | ||
| Investigating the effect of lignin on the negative effects of the torrefaction process in the production of briquettes from bagasse | ||
| نویسندگان [English] | ||
| Majid Salehi1؛ Mohammad Talaei poor2؛ Habibollah Khademi Eslam3؛ Behzad Bazyar4 | ||
| 1PhD Candidate, Department of Wood and Paper industry, faculty of natural resources and environment, Islamic Azad University, Science and Research Branch, Tehran, Iran | ||
| 2Associate Professor, Department of Wood and Paper Science and Technology, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| 3Professor, Department of Wood and Paper Science and Technology, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| 4Department of Wood and Paper Engineering, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده [English] | ||
| The use of various pretreatments, including the torrefaction process, in order to increase the efficiency and optimize the consumption of fuel briquettes, have attracted a lot of attention in recent years. Therefore, in this research, torrefaction pretreatment at 180 ºC temperature was used to modify bagasse biomass. In addition, lignin binding agent was used at levels of 2, 5 and 10%. Fuel briquettes weighing 30 grams were prepared using a manual briquetting machine. The physical, resistance and thermal characteristics of the resulting briquettes were investigated. The results showed that torrefaction pre-treatment by increasing the volumetric density of the resulting briquettes and increasing the amount of fixed carbon up to about 50% was able to increase the heating value of the briquettes up to about 10%, on the other hand, this process led to a decrease in the compressive strength of the resulting briquettes, which is used lignin as a binding agent could compensate a significant amount of this resistance drop. The results showed that the number of volatile substances of briquettes was reduced by 9% with torrefaction pre-treatment, which has a significant effect on reducing the pollution of these briquettes. In the study of the effect of lignin, it was also observed that with the increase in the consumption of lignin, the density and calorific value also increased. In general, the results of this research show that the use of lignin binding agent together with torrefaction pre-treatment can make possible the production of high-quality fuel briquettes from bagasse. | ||
| کلیدواژهها [English] | ||
| biomass, fossil fuels, briquettes, bagasse, torrefaction pre-treatment | ||
| مراجع | ||
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