叶片式错流过滤滤室回收木质素数值模拟  

Numerical simulation of lignin recovery in blade-type cross-flow filter chamber

作　　者：王雨 李庆党 张博伦 WANG Yu;LI Qingdang;ZHANG Bolun(College of Electrical and Mechanical Engineering,Qingdao University of Science and Technology,Qingdao 266100,China;Sino-German Institute of Technology,Qingdao University of Science and Technology,Qingdao 266100,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266100 [2]青岛科技大学中德科技学院,山东青岛266100

出　　处：《化工科技》2022年第6期47-51,共5页Science & Technology in Chemical Industry

摘　　要：使用CFD软件对叶片式动态错流过滤滤室回收木质素进行数值模拟研究,分别模拟了叶片转速为100~1000 r/min在不同跨膜压差下的流场情况。研究发现对于叶片所受动压力,转速为主要影响因素。当跨膜压差为0.05 MPa时,转速900 r/min叶片所受的动压力为转速100 r/min的100倍。跨膜压差与进出口位置对膜表面剪切力影响较小,转速为剪切力的主要影响因素。CFD software was used to simulate the separation of lignin in leaf dynamic cross-flow filtration chamber,and the flow field conditions under different transmembrane pressure differences were simulated when the leaf speed was 100~1000 r/min.It is found that rotational speed is the main factor affecting the dynamic pressure of blades.When the transmembrane pressure difference is 0.05 MPa,the dynamic pressure on the blade at 900 r/min is 100 times of that at 100 r/min.The transmembrane pressure difference and the position of inlet and outlet have little effect on the shear force on the membrane surface,and the rotation speed is the main factor affecting the shear force.

关 键 词：动态错流过滤 数值模拟 剪切力 动压力 

分 类 号：TQ051.85[化学工程]