Zigzag HIGEE

1-Rotating disc 2-Baffle 3-Gas inlet 4-Baffle 5-Stationaty disc 6-Gas outlet 7-Liquid inlet 8-Intermediate feed 9-Rotor casing 10-Liquid outlet 11-Rotating shaft 

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Figure 5.4 shows a zigzag HIGEE [6]. The rotor has no packing. A stationary top disc (5-stationary disc) with concentric circular fins (4-baffle) forms a part of the casing. The lower disc (1-rotational disc) too is provided with circular fins. The upper half of these fins is provided with holes or slots unlike the fins on the top disc. The lower disc is attached to a shaft driven by a motor. 

Figure 5.4 Zigzag HIGEE. Source Reprinted from Ref [61 2007, with permission from Elsevier B. V.

Wang et al. [12] reported that more than 40 Zigzag HIGEE units are in commercial operation in the Chinese pharmaceutical industries. The potential of HIGEE can be gauged from Table 5.2, which is an abridged version of Table 2 of Luo et al. [7]. The potential of HIGEE as an alternative to conventional columns appears to be impressive and deserves... 

Recent research in China (Wang et al., 2007) has led to what is claimed to be a new HiGee - a rotating zigzag bed (RZB). The RZB is claimed to function without... 

Figure 6.9 The rotating zigzag bed HiGee variant ofWang et al.

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