Slurry reactor multiple-agitator

In some cases, a slurry reactor with multiple agitation is used. For example, Bern et al. (1976) used the reactor shown in Fig. 15 for the hydrogenation of oils. In this reactor type, horizontal partitions are also introduced at various stages to reduce the extent of backmixing. These authors proposed the following correlation for the gas-liquid mass transfer coefficient, kLaL, in this type of reactor based on pilot-plant data (30 and 500 L capacity) ... 

Both to ascertain the role of the catalyst and to demonstrate the efiFects of pH, experiments have been performed at controlled levels of conversion of formaldehyde in a continuously stirred tank-reactor. Figure 2 shows such a simple reactor, in which the feed streams are segregated and the slurry of calcium hydroxide is kept agitated. Commercial, 37-percent formaldehyde solution is fed in from a separate reservoir, and a multiple-channel, peristaltic pump permits independent variation of the feed rates. 

---