| 초록 |
Agitator driven by external motor is one of the most widely used tools for mixing process. The mixing with mechanical agitator, however, has the unavoidable leakage problem at the trim of agitator stem under high pressure. This leakage is not desirable from the viewpoint of economics and safety. But the trim is inevitable for mechanical agitators. One of the suggestions for the problem is to eliminate mechanical assemblies from mixing vessels and to drive mixing with jet.In most process vessels without agitator, feed flow plays the primary role of mixing the vessel content. Hence the product quality is closely related to the configuration of injection and product nozzles. The configuration concerns the location of nozzles and the direction of injection nozzles.The flow field of a mixing vessel has the characteristic of turbulent flow that can be described by k-e turbulent model. This work tried to show mixing tendency with the relative configuration of each nozzle and to find the configuration of the best mixing performance. |
