CSTR turbine agitated

A recent patent (34) describes a process similar in several ways to the one above. The initial turbine agitated CSTR is eliminated. Instead, the feed flows to the helically-agitated CSTR operating at 25-35% conversion and 125-135°C. 

The first-stage CSTR is completely filled and utilizes a pair of opposing axial flow turbines on the agitator shaft. The maximum recommended viscosity for this reactor is 40 poise and the turbine agitation is set such that total flow volume generated per unit time by the turbines is 500 to 1000 times the feed rate to the reactor. 

Figure 15. Effect of segregation on polymerization of styrene in cyclohexane solution. Standard CSTR with h baffles and a 6-blade turbine, V = 670 cm, T = 75 °C. Dispersion Index DI vs. space time. Influence of agitation speed. Curves S (segregated flow) and M (well-micromixed flow) calculated from batch experiments. Initiator PERKAD0X l6, A = 0.033 mol L - -, kd = 5 x 10 5 s-1, f = 0.85 Mq = 6.65 mol L l, SQ = 2.22 mol IT1.

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