TY - JOUR
T1 - Simulation of reverse flow operation for manipulation of catalyst surface coverage in the selective oxidation of ammonia
AU - Budhi, Y.W.
AU - Jaree, A
AU - Hoebink, J.H.B.J.
AU - Schouten, J.C.
PY - 2004
Y1 - 2004
N2 - A mathematical model has been developed for the simulation of the ammonia oxidation in a reverse flow reactor. Computer simulations were carried out with a kinetic scheme, based upon elementary reaction steps. Aim was to explore the potential of a reverse flow reactor for selective oxidation of NH3 to produce either N2, NO, or N2O via a dedicated operation procedure. Therefore, the conversion of NH3 and the selectivity toward N2, NO, or N2O, were compared for a reverse flow operation and a steady state, once-through operation.
A new operation concept of reverse flow operation in combination with a periodically lower feed concentration is proposed. The novel reactor concept shows a better performance compared to normal reverse flow operation and to steady state, once-through operation. The results indicate that reverse flow operation can be applied for manipulation of conversion and selectivity. A periodically lower feed concentration may increase the conversion, even up to levels that exceed the steady state value.
AB - A mathematical model has been developed for the simulation of the ammonia oxidation in a reverse flow reactor. Computer simulations were carried out with a kinetic scheme, based upon elementary reaction steps. Aim was to explore the potential of a reverse flow reactor for selective oxidation of NH3 to produce either N2, NO, or N2O via a dedicated operation procedure. Therefore, the conversion of NH3 and the selectivity toward N2, NO, or N2O, were compared for a reverse flow operation and a steady state, once-through operation.
A new operation concept of reverse flow operation in combination with a periodically lower feed concentration is proposed. The novel reactor concept shows a better performance compared to normal reverse flow operation and to steady state, once-through operation. The results indicate that reverse flow operation can be applied for manipulation of conversion and selectivity. A periodically lower feed concentration may increase the conversion, even up to levels that exceed the steady state value.
U2 - 10.1016/j.ces.2004.04.040
DO - 10.1016/j.ces.2004.04.040
M3 - Article
SN - 0009-2509
VL - 59
SP - 4125
EP - 4135
JO - Chemical Engineering Science
JF - Chemical Engineering Science
IS - 19
ER -