METHOD AND APPARATUS FOR CONTROLLING STAGED COMBUSTION SYSTEMS

摘要

A method and apparatus is disclosed for controlling staged combustion system s of the type used for combusting two reactants wherein at least one reactant is supplied as two flows, the first of which is combusted with the flow of the other reactant in a primary stage and the other of which is combusted with t he exhaust of the primary stage in a secondary stage. In the present invention, the respective flows are monitored and controlled to provide a desired equivalence ratio for both the first stage and for the burner overall which is adaptable in response to variable input conditions. By controlling the flows in this way, a calculated energy output or adiabatic flame temperature can b e produced. The present invention can also control the reactant flows to each stage in response to measured parameters such as flame temperature or emissi on levels. In this way, the flows can be varied in order to drive the measured parameters to a desired level.