Heat Transfer In Stirred Tank Reactor

Heat transfer in a high exothermic reactors and uniformity of temperature profile in the reactor are very important in industry. Heat transfer performances of three types of agitators, including two-oblique 45 degree agitator, 3 wide-blade propeller agitator and 3 blade marine type propeller agitator with different rotation speeds were investigated. The performances of different heat pipes were also investigated, and some heat pipes were applied in a stirred reactor to develop new reactor which can be used for high exothermic reactions.A stirred reactor was designed with 300mm in diameter and 600mm in height. The heat transfer performances were studied in the stirred reactor using water, including three types of agitators with different ratios of d/D under a variety of rotation speeds. From the experiments, the adequate agitator and rotation speed were determined.The heat transfer performances of heat pipes, with different types and configurations, were also investigated under a temperature range from 40 to 50 degree. Experimental results indicated that the curing tube (with an angle between the condenser section and the evaporator section) was a good choice.A new reactor was developed by applying the heat pipes with special shapes. The performances of the reactor were studied.