Abstract
Anecessary condition is discussed for the stability of an adiabatic tubular reactor when Peclet number for mass transfer is not equal to that for heat transfer. The condition is derived from a necessary and sufficient condition for a set of ordinary differential equations in which the coefficients depend upon the equilibrium state profile to have eigenvalues with negative real parts. The condition is given in terms of the relationship between the slope of the heat generation curve and that of the heat removal line as is given for the stability condition of a stirred-tank reactor. It is also shown that the condition is equivalent to Amundson''s stability condition when Peclet number for mass transfer is equal to that for heat transfer.
