摘要
为提高乳化生物质柴油稳定性,以超声波为外加能量,构筑超声波加乳化剂的生物质柴油乳化体系,考查超声波频率、超声激励波形、超声功率与超声时间等超声因素对生物质柴油乳化效果及稳定性影响。根据试验要求设计槽式可变频率可控波形超声波乳化仪,在实验中改变超声波频率、波形、功率和处理时间,比较各因素条件下制备的乳化油稳定性。结果表明,在超声乳化生物质柴油效果及稳定性的影响因素中,影响最大为处理时间、其次为功率、频率最小为超声激励波形,超声作用的最佳操作条件是超声功率30 W,处理时间8 min,超声频率25 kHz以及超声波形为方波脉冲,此条件下制取的乳化油稳定性能最好,且燃烧特性良好,自然放置稳定时间可达2 256 h。
In order to improve the stability of bio-diesel fuel, the system which is combination of ultrasonic and bio-diesel fuel use ultrasonic as the additional energy, and investigate the Ultrasonic frequency, waveforms, power and ultrasonic time factors and the effects of bio-diesel fuel stability. Optimal operating parameters of ultrasonic generator were studied by orthogonal experiment. The ultrasonic generator could adjust frequency, power, waveform and treating time flexibly in order to compare the stability of bio-diesel fuel under different conditions. According to the results, treating time had the most significant in fluency on the stability, power and frequency was less important than it and waveform was the least. The optimal operating parameter was power of 30 W, frequency of 25 kHz, treating time of 8 min and waveform of square wave pulse. The emulsification stability under these conditions was the best; the setting time was 2 256 h.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2013年第5期102-106,共5页
Journal of Northeast Agricultural University
基金
国家863高科技研究发展计划项目(2007AA05Z414)
关键词
生物质
超声因素
乳化稳定性
操作参数
正交试验
biomass
ultrasound factors, emulsification stability
operating parameters
orthogonalexperiment
