An Improved Methodology for Pulse Combustion with Programmable Timing Sequence Used in Reheating Furnaces

抄録

This work introduces a programmable pulse combustion controller. It has two main parts, namely burner flame switch timing sequence and burner startup sequence; and the sequences being controlled by three groups of programmable timers. Burner output capacities for high and low flames are adjustable online, and the corresponding working periods for different flame sizes can be computed automatically using the proposed equations tested in practice. Proper cooperation between the burner flame size and its working period can achieve the required control objective well. Comparison results in several projects of reheat furnaces show the proposed methodology can optimize chamber temperature distribution and improve control precision effectively.