Izvorni znanstveni članak
Prediction of Improved Performance of Catalytic Hydrogenation Reactor by Periodic Modulation of the Feed Rate
V. Stanek
; Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02 Prague, Czech Republic
J. Hanika
; Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02 Prague, Czech Republic
V. Jiricny
; Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02 Prague, Czech Republic
P. Stavarek
; Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02 Prague, Czech Republic
V. Tukac
; Institute of Chemical Technology, 166 28 Prague, Czech Republic
J. Lederer
; Institute of Inorganic Chemistry, Usti nad Labem, Czech Republic
Sažetak
A mathematical model of catalytic hydrogenation in a trickle bed reactor under forced modulation of the liquid feed rate has been formulated and the predicted results have been compared with the experiments on a pilot plant catalytic hydrogenation of styrene.
Computed results have shown that the principal role in improving the reaction conversion under forced modulation of the liquid feed rate is the wetted surface of the catalyst. Improved reaction conversion has been predicted and observed experimentally at low splits of the periodic liquid feed bringing the regime temporarily close to the transition regime from the trickling to the natural pulsing regime. Computed transient profiles indicate that forced modulation of liquid velocity has much greater impact on the transient concentration profiles than on the transient temperature profiles.
Ključne riječi
Trickle bed reactor; induced pulsing; hydrodynamics; mathematical model; hydrogenation; styrene
Hrčak ID:
40921
URI
Datum izdavanja:
29.9.2009.
Posjeta: 812 *