滴流床反应器中泡沫流床层压降的实验研究

Pressure Drop of Foaming Fluid Flow in Trickle Bed Reactors

选用过氧化氢生产用蒽醌工作液体系,完成了滴流床反应器中泡沫流床层压降的实验研究. 通过测定瞬时床层压降,建立了反应器内的流型识别方法,借以研究了在泡沫流和泡沫脉冲流区的床层压降梯度与气液相流速、填料尺寸的关系,并采用Specchia和Baldi提出的经验式对发泡体系泡沫流区床层压降进行了估算. 结果表明,通过实验数据回归,可采用Specchia和Baldi经验式预测泡沫流区的床层压降,最大偏差小于5%.

Anthraquinone working solutions used in hydrogen peroxide manufacture were selected as the test system to investigate the properties of foaming fluid flow in the trickle bed reactor (TBR). By the analysis of the instantaneous pressure drop fluctuation a method was established to identify the flow patterns in TBR for foaming systems and used to investigate the effects of the factors such as gas and liquid flow rate, and packing particle size on the bed pressure gradient. The experimental data were correlated based on the empirical relationship reported by Specchia et al. Comparison between experimental data and estimation show that the regressed relationship of Specchia et al. can be used to predict the pressure gradient of foaming fluid flow in TBR with an accuracy of 5%.