Thermal explosion in homogeneous flow-through reactors

Operating modes of thermal knives

“…In plug flow reactors, a smooth change in the external parameters was reported [8] to lead to intermittent transitions between ignition and extinction. Theory and experiment [9,10] have shown that combustion of EMs in narrow channels and slots can involve similar phenomena.…”

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.…”

“…93, but this difference is put down to a change in the inherent criterion 7 , i.e., to degeneration of critical conditions, see Ref. 38 and 39. In its general statement, the non-steady problem with consideration of axial transfer in the reactor has been considered (82,94). The results are important for clearing the models for the continuous ideally stirred and plug reactors.…”