Burner with a perforated flame holder and pre-heat apparatus

摘要

According to an embodiment, a combustion system is provided, which includes a nozzle configured to emit a diverging fuel flow, a flame holder positioned in the path of the fuel flow and that includes a plurality of apertures extending therethrough, and a preheat mechanism configured to heat the flame to a temperature exceeding a startup temperature threshold.

主权项

1. A burner, comprising:
a primary nozzle having a longitudinal axis and configured to emit a fuel flow; a primary flame holder having first and second faces and a plurality of apertures extending through the flame holder from the first face to the second face, positioned with the first face toward the nozzle and intersecting the longitudinal axis of the nozzle; the primary nozzle and the primary flame holder being separated by a distance D1 in an operational mode wherein an operational flame is primarily within the apertures of the primary flame holder; and a preheat mechanism configured to preheat the primary flame holder in a startup mode and not to preheat the primary flame holder in the operational mode, the preheat mechanism being configured to support a preheat flame in a position between the primary nozzle and the first face of the primary flame holder.