Lab-scale Experimental Study on the Compressing Molding Parameters under Hot Condition for Rice Straw Pellets

doi:10.3969/j.issn.1000-6362.2016.01.004

Abstract

Abstract:

Rice straw cold press process had been done early and the result showed that the energy consumption of pellets was high and the quality of pellets was bad. In order to increase the quality of pellets, the rice straw hot-press forming experiment was carried out under different technological parameters (compressive forces, particle size, temperature, moisture content) by utilizing special briquetting equipment. By checking pellets’ physical properties (loose density, shatter resistance, compressive forces and water resistance), the confirmed best process parameters were as follows: particle size 0-2mm, temperature 70-100℃, compressive forces 8.89-40MPa, moisture content 12%-25%. In order to increase the quality of rice straw pellets, some wood chips were added to the rice straw materials forming the mixed raw material．By analyzing the results of contrast tests, we found that under low compressive forces, the physical property of 1:1 blended material pellets were better than that of pure rice straw and wood chips pellets, and the results also indicated that adding wood chips into the rice straw material could improve the quality of single rice straw pellets.

Key words: Rice straw, Wood chips, Hot molding, Physical properties

LI An-xin, ZHANG Chuan-jia, TU De-yu, HE Gui-sheng. Lab-scale Experimental Study on the Compressing Molding Parameters under Hot Condition for Rice Straw Pellets[J]. Chinese Journal of Agrometeorology, 2016, 37(01): 26-35.

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