Abstract: The flow channel structure and nozzle arrangement pattern have a significant impact on the mixing efficiency of multiphase media within a jet-stirred reactor. A jet-stirred reactor was selected as the research object in this study. Considering different flow channel structural features and layout configurations, a three-dimensional finite element model of the flow channel structure and the internal flow field within the reactor was developed. The concentration field distribution of the fluid in the confined space was then analyzed. The calculation results show that the swirling channel can enhance the fluid flow in confined spaces to a certain extent. Compared with the direct flow channel structure, the mixing uniformity of the medium in the long and wide directions in the reactor with the swirling channel structure has been improved by 46.4% and 60.4% respectively; the mixing uniformity of the medium in the length, width, and height directions in the reaction vessel with a mixed arrangement of straight swirling channels has been greatly improved by 95.9%, 98.1% and 36.2%; the structure of the swirling flow channel and the arrangement pattern of the surrounding mixed flow channel can improve the mixing uniformity of the medium in the reactor to some extent. The different internal flow channel structures and channel arrangement schemes established in this paper provide reference for the design and optimization of flow channels in jet-stirred reactors.

Key words: jet-stirred reactorlflow channel structurelarrangement patternlmultiphase mediumlmixing