Advances in high-efficiency polymer devolatilization

被引：0

作者：

Xi, Zhenhao ^{[1
]}

Qiu, Xiaoyi ^{[1
]}

Zhao, Ling ^{[1
]}

机构：

[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai,200237, China

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2019年 / 38卷 / 01期

关键词：

Energy efficiency;

D O I：

10.16085/j.issn.1000-6613.2018-1281

中图分类号：

学科分类号：

摘要：

The devolatilization process follows different heat and mass transfer mechanisms due to different volatile contents in polymers. It is of great significance to develop efficient devolatilization technology and equipment based on its determining mechanism. In this paper, different theories, models and characteristics of three consecutive stages of polymer devolatilization process, namely, flashdevolatilization, foam-devolatilization and diffusion-controlled-devolatilization, have been systematically introduced. The intensification methods of devolatilization process have also been reviewed in both engineering and technology perspectives. Correspondingly, new technologies, such as grid falling film reactor, higee, supercritical fluid assistance and ultrasonic enhancement, and their applications were described in detail. Future research directions of polymer devolatilization theory and engineering practice were proposed as following: the coupling mechanism between diffusion-controlled-devolatilization and foam-devolatilization needs to be studied further to establish more precise and universal devolatilization mechanisms; and the grid falling film devolatilization technology is prospective in mass-scale industrial devolatilization process due to its energy efficiency advantages. © 2019, Chemical Industry Press. All right reserved.

引用

页码：80 / 90