超声功率对超声振动辅助制粒质量的影响  

Ultrasonic vibration-assisted pelleting of cellulosic biomass: the effect of ultrasonic power on the quality of particles

作　　者：左开宇 张琦[1] 

机构地区：[1]扬州大学机械工程学院,江苏扬州225009

出　　处：《农业装备技术》2016年第4期19-22,共4页Agricultural Equipment & Technology

基　　金：江苏省青年基金(BK20140486);江苏省高校自然科学研究基金资助项目(14KJB480007);中国博士后科学基金项目资助(2014560448)

摘　　要：以苜蓿草为原料并利用超声振动辅助制粒。通过单因素实验研究超声功率对颗粒质量(密度、抗碎性、吸水性)的影响。实验结果表明,成型颗粒的密度、抗跌碎率随超声功率的升高而升高,成型颗粒的吸水性随超声功率的升高而降低。当使用70%超声功率(超声振幅为0.031 mm)制成的苜蓿草颗粒颗粒质量最优,颗粒密度达到最高值为575.84 kg/m3,抗跌碎率达到最高值为80%,吸水率降低为最低值45.6%。This article use ultrasonic vibration-assisted pelleting with alfalfa as raw material. We study theeffect of ultrasonic power on the quality of particles （density, resistant, water absorption. Experimental resultsshow that the density of the particle have a gradual increase by the ultrasonic power increased to 575 kg/ m3.The breaking rate of the forming particles increased to 8 2 % with the increase of ultrasonic power. The waterabsorption of the formed particles decreased with the increase of ultrasonic power to 42.3%. When we use7 0 % ultrasonic power （ultrasonic amplitude is 0.031mm） to make particles, we get the best quality of particles.Particle density reached the highest value of 575.84 kg/m3 the resistance to break rate reached thehighest value was 80%, the water absorption rate was reduced to a minimum of 45.6%.

关 键 词：超声波 生物质 密度 抗碎性 抗渗水性 

分 类 号：S216.2[农业科学—农业机械化工程]