Boiling point variables effect

Two species, chir (Pinus roxburghii Sargent.) size 7.5 x 2.75 x 1.25 cm3and mango (Mangifera indica Linn.) size 7.5 x 1.25 x 1.25 cm3 were studied to establish different reaction variables. Four replicates were taken for each treatment and experiments were carried out with oven-dried samples except in case of those where effect of moisture content was studied. Samples were placed in a reaction chamber and reaction was carried out under reflux conditions at 93+1 C, the boiling point of thioacetic acid. Experimental set-up for vapor phase acetylation is shown in Figure 1. 

A very effective two-way cooling system uses a boiling liquid to which heat may be externally applied for startup. An example is pictured in Fig. 10.10. Because the rate of heat transfer in the system shown in Fig. 10.10 is directly proportional to coolant temperature, that variable should be manipulated to control reactor temperature. The boiling point of the condensate is a function of its pressure, therefore the manipulated variable is the set point of the jacket back-pressure controller. 

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