Malay Jignesh Shah, S. Kolla, R. Mohan, O. Shoham
{"title":"Variation of Zero Net Liquid Holdup in a Gas Liquid Cylindrical Cyclone Separator Below Operational Envelope","authors":"Malay Jignesh Shah, S. Kolla, R. Mohan, O. Shoham","doi":"10.1115/fedsm2020-20090","DOIUrl":null,"url":null,"abstract":"\n Novel experimental and theoretical investigations are carried out on Zero Net Liquid Flow (ZNLF) in the upper part of the Gas-Liquid Cylindrical Cyclone (GLCC©) separator. Experimental data are acquired for the variation of the Zero Net Liquid Holdup (ZNLH) and the associated Churn region height for air-oil and air-water flow. The experiments are carried out at normal operating conditions below the GLCC Operational Envelope (OPEN) for Liquid Carry-Over (LCO). The ZNLH measurements for air-oil flow are higher than those for air-water flow. The Churn region height is higher for air-oil flow, as compared to the air-water flow, for the same operating conditions. The higher oil viscosity, which results in higher frictional and drag forces, leads to greater ZNLH for air-oil flow. The Churn region height is sensitive to the superficial gas velocity, whereby a small increase of gas velocity results in exponential growth of the Churn region height. The model developed by Karpurapu et al. (2018) for predicting the ZNLH at specific operational conditions just below the OPEN for LCO is extended to predict the ZNLH variation along the upper part of the GLCC below the OPEN for LCO, as well as the associated Churn region height. The predictions of the developed extended model for the ZNLH variation compared to the acquired experimental data showing discrepancies of 8% and 3%, respectively, for air-oil and air-water flows.","PeriodicalId":333138,"journal":{"name":"Volume 2: Fluid Mechanics; Multiphase Flows","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Volume 2: Fluid Mechanics; Multiphase Flows","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/fedsm2020-20090","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
运行包线以下气液圆柱旋风分离器零净含液率的变化
对气液圆柱旋风分离器(GLCC©)上部的零净液流(ZNLF)进行了新的实验和理论研究。获得了零净含液率(ZNLH)和空油、空水流动的搅流区高度变化的实验数据。实验在GLCC操作包络线(OPEN)以下的正常操作条件下进行,用于液体携带(LCO)。气-油流动的ZNLH测量值高于气-水流动。在相同的操作条件下,空气-油流动的搅拌区高度比空气-水流动的搅拌区高度要高。较高的油粘度会导致更高的摩擦力和阻力,从而导致空气-油流动的ZNLH更大。搅拌区高度对表面气速敏感,气速的小幅增加会导致搅拌区高度呈指数增长。Karpurapu等人(2018)开发的用于预测LCO在OPEN以下特定操作条件下的ZNLH的模型被扩展到预测LCO OPEN以下GLCC上部的ZNLH变化,以及相关的搅拌区高度。与获得的实验数据相比,所开发的扩展模型对ZNLH变化的预测分别显示出空气-油和空气-水流动的8%和3%的差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。