摘要
隔板塔作为一种热耦合塔型,和常规多塔序列相比,具有显著的节能优势,并且能够降低设备投资和占地面积。但是如何协调隔板两侧的压力平衡,来维持或调整隔板下侧分气比是其设计和操作的关键性难题。通过在隔板左侧和(或)右侧安置压降可调的气相分配器,可以起到调整和控制分气比的功能。针对一种气相分配器,本文采用CFD模拟手段探究了其几何构型、进口气速及液位高度对于压降的影响关系。确定了较优的几何构型,使得构型固有压降较小且增加了液位高度对于压降的灵敏度,并且拟合得到了气相分配器压降随进口气速及液位高度变化而变化的水力学计算公式,对于隔板塔内气相分配器的设计及应用控制提供了强有力的支撑。
As a thermally coupled tower type,the Dividing Wall Column has significant energy saving advantages compared to conventional multi-tower sequences and can reduce equipment investment and floor space.However,how to balance the pressure balance on both sides of the partition to maintain or adjust the lower gas separation ratio of the baffle is a key problem in its design and operation.The function of adjusting and controlling the gas separation ratio can be achieved by placing a gas phase distributor with adjustable pressure drop on the left and/or right side of the separator.For a gas phase distributor,this paper uses CFD simulation to explore the relationship between its geometry,inlet gas velocity and liquid level height on pressure drop.The optimal geometry is determined,so that the inherent pressure drop of the configuration is small and the sensitivity of the liquid level height to the pressure drop is increased,and the fitting of the gas phase distributor pressure drop varies with the inlet gas velocity and the liquid level.The hydraulic calculation formula provides strong support for the design and application control of the gas phase distributor in the Dividing Wall Column.
作者
王宗浩
陆金仁
王二强
安维中
Wang Zonghao;Lu Jinren;Wang Erqiang;An Weizhong(College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China;School of Chemical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《山东化工》
CAS
2020年第8期23-26,共4页
Shandong Chemical Industry
基金
国家自然科学基金项目(21376240)。
关键词
隔板塔
气相分配器
分气比
CFD
水力学模拟
Dividing Wall Column
vapor splitter
vapor split ratio
CFD
hydraulic simulatio
