Reactor adiabatic calorimeter

Figure 2 illustrates some typical instantaneous rate data obtained using the adiabatic calorimeter reactor for monodispersed latices in the size range 395-1650 X. The smallest latex... 

The VSP (Figure 8-8) is essentially an adiabatic calorimeter. A small amount of the material to be tested (30-80 mg) is loaded into a thin-walled reactor vessel. A series of controlled... 

Calorimeters may also be classified with respect to the way they use the heat balance. In fact, every calorimeter is based on a heat balance (as reactors are). Here we may distinguish ideal accumulation calorimeters or adiabatic calorimeters, from ideal heat flow or isothermal calorimeters and isoperibolic11 calorimeters. 

The methods used for the isothermal reactor can also be used here, but must be completed by a thermal study over the total temperature range in which the reactor will be operated. Therefore, DSC in the scanning mode, or adiabatic calorimeters such as the Accelerating Rate Calorimeter or simply the Dewar flask, can be used. 

P9-10(- The ARSST adiabatic bomb calorimeter reactor can also be used to determine the reaction orders. The hydrolysis of acetic anhydride to form acetic acid was carried out adiabatic ally... 

Thermal data where reactions are detected at lower temperatures are obtained from test runs on an ARC or other more sensitive calorimeters. In the ARC, the temperature is raised stepwise and at a much slower effective rate than with the DSC. The ARC is nearly adiabatic and, thus, more nearly approaches plant reactor conditions. Another important advantage is the fact that the reaction pressure is monitored and recorded in the ARC. 

The calorimeter is able to work in four different operating modes adiabatic, where the jacket temperature (Tj) is adjusted such that there is no heat transfer through the reactor wall isoperiholic, where the jacket temperature is kept constant and the reaction temperature (TJ follows the reaction profile isothermal, where the desired reaction temperature is set to a constant value and Tj is changed automatically to maintain % at the specified value and distillation/rejlux mode or crystallization, where the respective (Tj-TJ or (Tr-Tj) is maintained constant... 

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