High Speed Single Yarn Twisting Machine

Textile industry related information

Recently, AIChE Journal (Journal of American Association of Chemical Engineers) published a paper by Li Xianhui, Ph.D., Professor Li Jianxin and He Benqiao, from School of Materials, Tianjin University of Technology, entitled Filtering Model for Predicting and Optimizing Point Flux Distribution of Immersed Hollow Fiber Membrane Modules. Reviewers have highly commented on this article. They believe that this work has important contribution to understanding the flux distribution of hollow fiber membranes and has important guiding significance for the design of industrial components.

Hollow fiber membrane filtration system has been widely used in water treatment, biological separation and other fields due to its advantages of high filling density and good water quality. The scale of application in the project has increased year by year, but the technical risks of operation efficiency and stability have also increased. How to control membrane fouling and achieve efficient and stable operation has always been a great challenge for Industry and academia.

For this reason, a large number of experimental studies on the optimization design of hollow fiber membrane modules and the theory of hydrodynamic optimization control have been carried out at home and abroad. Based on the model of Hagen-Poisenille equation, the influence of radial permeability flux on flow resistance is neglected. At the same time, there is no effective experimental monitoring method to verify the model, which limits the practical application of the model.

The research group of Professor Li Jianxin of Tianjin University of Technology has established a method for measuring the point flux of hollow fiber membrane based on the principle of separation and superposition. Aiming at the influence of radial cross-membrane flow on the flow resistance in the inner cavity of hollow fiber membrane in operation, a mathematical model of hydrodynamics for hollow fiber membrane filtration is established based on the principle of conservation of mass and momentum. The structure-activity relationship between the inner diameter and length of hollow fiber filament and water production efficiency was confirmed. Compared with the experimental results in the literature, the error of the model is only 1.1%. This work provides an important theoretical basis for the design optimization of hollow fiber membrane module and the stable operation of the system. It marks a new breakthrough in the basic theory of hollow fiber membrane technology in the State Key Laboratory of Membrane. The research was funded by the National 973 Program and the Innovation Team Development Program of the Ministry of Education.

Hot Tags: High Speed Single Yarn Twisting Machine, China, manufacturers, suppliers, factory