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بررسی تاتیر دما، فشار تراکم و نسبت اختلاط مواد بر خصوصیات مکانیکی پلت‌های تولید شده از سبوس برنج و ملاس نیشکر | ||
| مهندسی بیوسیستم ایران | ||
| دوره 51، شماره 3، آذر 1399، صفحه 551-561 اصل مقاله (716.3 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijbse.2020.267118.665104 | ||
| نویسندگان | ||
| رضا طباطبایی کلور* 1؛ علی متولی2؛ رمضان هادیپور3؛ سینا مودتی4 | ||
| 1عضو هیئت علمی/گروه مهندسی مکانیک بیوسیستم، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
| 2استادیار ، گروه مهندسی بیوسیستم، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 3کارشناسی ارشد، گروه مهندسی بیوسیستم. دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| 4کارشناس ارشدٰ گروه مکانیک بیوسیستم، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران | ||
| چکیده | ||
| یکی از روش های استفاده بهینه از زیست تودهها تبدیل آنها به شکل پلت میباشد که جرم و انرژی بیشتر در واحد حجم داشته و امکان استفاده و حمل و نقل آسانتر آنها را فراهم میکند. عوامل مختلفی در فرآیند پلت سازی موثر هستند که شناخت آنها به بهینه سازی فرایند پلت سازی کمک میکند. در این تحقیق تاثیر دما، فشار تراکم و نسبت ترکیب مواد بر خصوصیات مکانیکی پلت های تولید شده از سبوس برنج و ملاس نیشکر مورد بررسی قرار گرفت. نتایج نشان داد که بجز نیروی متراکم سازی پلت و اثر متقابل نیروی فشار و دمای قالب دیگر متغیرهای مستقل و اثرات متقابل آنها بر برخی متغیرهای وابسته در سطح 1% معنی‌دار هستند. مقایسه میانگین‌ها نشان داد که با افزایش میزان ملاس در ترکیب، مقاومت فشاری پلت در راستای محوری و شعاعی روند افزایشی نشان داد. بیشترین مقاومت فشاری پلت در نسبت سبوس به ملاس 1 به 50/1 و بار 1300 نیوتن بدست آمد. بیشترین مقاومت خمشی پلت نیز در هر سه نسبت دارای اختلاف معنی‌داری بودند و با افزایش میزان ملاس نیشکر مقاومت خمشی افزایش یافت. افزایش دمای قالب و فشار تراکم موجب افزایش مقاومت پلت ها در هر دو راستای محوری و شعاعی و نیز مقاومت خمشی آنها شد. حداکثر مقادیر چگالی و پایداری پلت در نسبت سبوس به ملاس 1به 65/1، نیروی فشاری 1300 نیوتن و دمای 70 درجه سلسیوس به ترتیب kg/m3 1213 و 5/93% بدست آمد. بطور کلی در فرایند پلت سازی هر سه عامل نسبت ترکیب مواد، فشار تراکم و دما بر استحکام پلت تاثیر دارند. | ||
| کلیدواژه‌ها | ||
| پلت؛ سبوس برنج؛ ملاس نیشکر؛ چگالی؛ مقاومت سقوط | ||
| عنوان مقاله [English] | ||
| Effect of Temperature, Compression Force and Mixing Ratio of Materials on the Mechanical Properties of Pellets Made from Rice Bran and Sugarcane Molasses | ||
| نویسندگان [English] | ||
| Reza Tabatabaei kolor1؛ Ali Motevali2؛ Ramazan Hdipour3؛ Sina Mavaddati4 | ||
| 1Scientific member/Department of Mechanics of Biosystems Engineering, Faculty of Crop Engineering, Sari University of Agricultural Sciences and Natural Resources | ||
| 2Assistant Professor, Dept. of Biosystem Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran | ||
| 3MSc graduate, Dept. of Biosystem Department, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran | ||
| 4MSc graduate, Dept. of Biosystem Engineering, Faculty of Agricultural Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran. | ||
| چکیده [English] | ||
| One of the best ways to use biomass is to convert them into a pellet that has more mass and energy per unit volume and makes it easier to use and transport. Various factors are involved in the process of pelletizing, which helps to optimize the process. In this study, the effect of temperature, compression force and mixing ratio were investigated on the mechanical properties of pellets made from rice bran and sugar cane molasses. The results showed that, except compression force and the interaction between the compression force and the temperature, other variables and their interactions have significant effect (p < 0.01) on the dependent variables. Mean comparison showed that increasing the amount of molasses in combination increased the compressive strength of the pellet in axial and radial direction. The highest compression strength was obtained at the ratio of 1 to 1.50 (rice bran to molasses) and 1300N compression force. The maximum bending strength of pellets was significant in all three ratios, and increasing sugar cane molasses increased the bending strength. Increasing the mold temperature and compression force increased the strength of the pellets in both axial and radial directions as well as their bending strength. Maximum density and drop resistance of pellet in the ratio of 1 to 1.65 (rice bran to molasses), compression force of 1300 N and temperature of 70 ° C were 1213 kg/m3 and 93.5%, respectively. Generally, in the pelletizing process the mixing ratio, compression force and temperature have an effect on the strength of the pellet. | ||
| کلیدواژه‌ها [English] | ||
| Pellet, Rice Bran, Sugar Molasses, Density, Drop resistance | ||
| مراجع | ||
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