Micromixing Enhancement in an RPB Reactor with Different Rotor Structures under Ultrasonic Field
Volume Title: 1
Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran
In this paper, the effect of rotor structure on the micromixing efficiency in a typical rotating packed bed (RPB) reactor in the presence and absence of ultrasonic waves is investigated. For this purpose, the RPB reactor with grille stainless steel blades was used to investigate the effect of packing structure on the micromixing efficiency. Two different blade packings structures were investigated: conventional blades and blades with an angle of 30° relative to the radial axis. The reactor was equipped with four high-frequency ultrasonic transducers with a frequency of 1.7 MHz. For investigating the micromixing efficiency the iodide/iodate reaction was used. The effect of the rotational speed of the bed on the micromixing efficiency in the absence and presence of ultrasonic waves was investigated. The effect of rotational speed on the reduction of segregation index and an increase of micromixing efficiency was observed. The results showed that the presence of high-frequency ultrasonic waves increased the micromixing efficiency in the RPB. However, the blade packings with an angle of 30° relative to the radial axis resulted in a better mixing than the packings with an angle of 0°.