Thermal regimes of exothermic processes in continuous stirred tank reactors

Spectroscopy of Hydrothermal Reactions. 2. Reactions and Kinetic Parameters of [NH3OH]NO3 and Equilibria of (NH4)2CO3 Determined with a Flow Cell and FT Raman Spectroscopy

“…The heat balance describing transient behavior in the flow reactor in Figure is given by eq 5 Definitions of the symbols appear in Table .…”

Non‐isothermal phenomena in polymer engineering and science: A review. Part I: Non‐isothermal polymerization

“…Its methods, however, may be successfully applied to the analysis of thermal regimes for the process. References 8, 82,83 deal with regularities of the exothermal reactions in ideally-stirred tank reactors, plug flow reactors, and tubular reactors with axial transfer. The equations describing such thermal regimes differ from those for periodic reactors considered in the previous section, only by the presence of additional terms for the rates of The change in heat flows over the axial coordinate is essential for plug flow reactors.…”

“…Depending on the ratio between the Semenov and Damkoeler numbers, the stirred tank reactor may demonstrate stable high temperature and low temperature regimes (82)(83)(84)(85)(86). The transition from a low to a high temperature regime, ignition and extinction, displays a hysteresis: the critical conditions of these transitions for a general case do not coincide.…”

When do chemical reactions promote mixing?

“…This often holds true, in which case the dimensionless group  disappears from Eqs (1) and (2), leaving only three dimensionless numbers (Se, Da and Ze) to characterize the dependence of both  and  on . In fact, in this situation, the above two equations have the important significance that the dynamics of the approach to a steady state for the reactor and also the stability of each steady state of a CSTR can be characterized on a plot of Se versus Da for the appropriate value of Ze [5,11]. It is well known that there is a domain on the (Da, Se) plane, corresponding to the CSTR having two steady states: one is at a high temperature, the other at a lower temperature.…”