Enhancing defoaming using the foam breaker with perforated plates for promoting the application of foam fractionation
Enhancing defoaming using the foam breaker with perforated plates for promoting the application of foam fractionation
复制标题
DOI：
10.1016/j.seppur.2013.09.021
复制
发表时间：
2013-12
影响因子：
8.6
通讯作者：
Yajun Liu;Zhaoliang Wu;Bin Zhao;Lingling Li;Rui Li
中科院分区：
文献类型：
--
作者：
Yajun Liu;Zhaoliang Wu;Bin Zhao;Lingling Li;Rui Li
一种新型多孔板消泡剂，具有与泡沫分级相同的优点，即成本低、环境相容、设备简单，以促进泡沫分级的应用。使用十二烷基硫酸钠（SDS）作为模型系统来评估消泡剂的性能。在分析消泡原理的基础上，采用不同孔径和开孔面积比的多孔板，研究了多孔板数量、SDS浓度和持液率对消泡百分率的影响。结果表明，多孔板能显着强化气泡聚结或气泡破裂，提高消泡率。与无板消泡剂相比，在SDS浓度0.5 g/L、持液率3.0%的条件下，使用孔径为1.0 mm、开孔率1.0%的5块多孔板消泡剂，消泡率由19%提高到63%。结果，泡沫收集器的体积减少了三分之二。最后，建立了模型，并成功预测了使用带孔板的消泡剂的消泡百分比。
A novel foam breaker with perforated plates was developed for promoting the application of foam fractionation due to its same advantages as foam fractionation, i.e., low cost, environmental compatibility and simple equipment. Sodium dodecyl sulfate (SDS) was used as a model system for evaluating the performances of the foam breaker. Based on the analysis of defoaming principle, the effects of the number of perforated plates, SDS concentration and liquid holdup on the defoaming percentage were researched using perforated plates of different orifice diameters and open area ratios. The results showed that perforated plate could significantly strengthen bubble coalescence or bubble collapse and promote the defoaming percentage. Compared with the foam breaker without any plates, the defoaming percentage increased from 19% to 63% using the foam breaker with five perforated plates of orifice diameter 1.0 mm and open area ratio 1.0% under the conditions of SDS concentration 0.5 g/L and liquid holdup 3.0%. As a result, the volume of foam collector decreased by two thirds. Finally, a model was established and it predicted successfully the defoaming percentage using the foam breaker with perforated plates.