Effect of frequency on ultrasound-assisted centrifugal dewatering of petroleum sludge
Effect of frequency on ultrasound-assisted centrifugal dewatering of petroleum sludge
复制标题
频率对超声波辅助石油污泥离心脱水的影响
DOI：
10.1080/07373937.2016.1144611
复制
发表时间：
2016-03
影响因子：
3.3
通讯作者：
Chi Yong
中科院分区：
文献类型：
--
作者：
Mao Feiyan;Han Xu;Huang Qunxing;Yan Jianhua;Chi Yong
本工作采用 20、25、30、35 和 40kHz 超声波处理石油污泥，研究预处理过程中频率对脱水的影响。分析了各种参数，包括含水量、液滴尺寸分布、粘度和温度，以量化脱水性的改善，这将影响随后的离心脱水。结果表明，25kHz和30kHz超声波可直接去除水分26.3wt%和28.1wt%，但导致残留水滴直径减小。尽管高频超声波很少或没有水分离，但 35 和 40kHz 强烈影响乳化水并增加了平均液滴尺寸。这些差异主要可以通过声共振和空化效应来解释。此外，离心结果表明，粘度为6Pa·s的污泥经40kHz处理后，脱水率可达78.5wt%。通过对不同频率超声处理的分析和比较，开发出统一的表征方法，为选择合适的预处理提供定量评价。
In this work, petroleum sludge has been treated with ultrasound at 20, 25, 30, 35, and 40 kHz to study the effects of frequency on dewatering during pretreatment process. Various parameters, including water content, droplet size distribution, viscosity, and temperature, were analyzed to quantify the improvement of dewaterability which will affect the subsequent centrifugal dehydration. The results showed that 25 and 30 kHz ultrasound could directly remove water by 26.3 and 28.1 wt%, respectively, but resulted in decrease in droplet diameter in remaining water. Although there is little or no separation of water by high-frequency ultrasounds, 35 and 40 kHz strongly affected the emulsified water and increased the mean droplet size. These differences could be primarily explained by acoustic resonance and cavitation effects. In addition, the centrifugal results showed that dewatering ratio up to 78.5 wt% was achieved for sludge with viscosity of 6 Pa · s after treated at 40 kHz. Through analysis and comparison of different-frequency ultrasonic treatments, a unified characterization method is developed to provide quantitative evaluation for selecting the proper pretreatment.
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DOI：
10.1080/15567036.2011.551921
发表时间：
2014-07
期刊：
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
影响因子：
--
作者：
L. Sun;P. Han;L. Yang;X. Lu
通讯作者：
L. Sun;P. Han;L. Yang;X. Lu
影响因子：
7.4
作者：
Qun-xing Huang;F. Mao;Xu Han;Jian-hua Yan;Y. Chi
通讯作者：
Qun-xing Huang;F. Mao;Xu Han;Jian-hua Yan;Y. Chi
影响因子：
7.4
作者：
Qun-xing Huang;Xu Han;F. Mao;Y. Chi;Jian-hua Yan
通讯作者：
Qun-xing Huang;Xu Han;F. Mao;Y. Chi;Jian-hua Yan
影响因子：
5.3
作者：
Rondon, Miguel;Bouriat, Patrick;Salager, Jean-Louis
通讯作者：
Salager, Jean-Louis
影响因子：
9.9
作者：
GARDNER, EA;APFEL, RE
通讯作者：
APFEL, RE