Dynamics and Control of Forced-Unsteady-State Catalytic Combustors
The dynamic behaviour of the reverse flow reactor and of the network of combustors, with periodic variation of the feed position, has been investigated: the destruction of lean waste gas emissions has been considered. In the reverse flow reactor larger emissions occur at each feed switch, caused by wash out; in addition, temporary decrease of conversion can occur during start up. This is not the case for the network of combustors, which also assures a more uniform exploitation of the catalyst.
A two-point feedback controller has been tested for the network, because an open loop periodic control is not sufficiently robust for this application: the range of values that makes autothermal operation possible in the network is very narrow. The performance of a feedback control in the case of the reverse flow has also been investigated.
KeywordsReverse Flow Cycle Period Inlet Concentration Outlet Concentration Lean Mixture
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