The effect of liquid flow distribution on the behaviour of a trickle bed reactor

摘要: Abstract A mathematical model has been formulated of the effect flow distribution liquid phase carrying a dissolved reactant on progress an n th order, irreversible, catalytic reaction with heat effects in adiabatic trickle bed reactor. The stated terms density irrigation, temperature and concentration liquid, all treated as spatially distributed variables. Provisions have made to account for existence down surface wall, which no effect. Local proven be coupled by invariant T + U γ c = . same governs also local wall flow. Mathematically, is represented set nonlinear parabolic partial differential equations enabling fields obtained arbitrary type intensity Numerical solutions finite-difference method simulating reactors irrigated distributors central discs different radii, or annulus, strongly exothermic reactions order ranging between 0.1 2. results shown overall conversion very complex. Optimum initial varies depending well required degree conversion. In general, however, entrance region pattern may play significant role affecting especially exhibiting kinetics close zero (hydrogenations). found unambigously adverse reaching high conversions increasing importance low reactions.