US Patent 11274827 Pilot assemblies and methods for elevated flare stacks

Pilot assemblies comprising a fire path tubing and pilot tubing in fluid communication through a pilot nozzle for elevated flare stacks are disclosed. A plurality of flame segments is generated using a hot surface ignition element or a spark igniter in the fire path tubing and ignites fuel/air mixture flowing through the pilot tubing into a pilot nozzle to produce a reliable pilot flame. The pilot flame ignites the waste gases flowing out of the flare tip of elevated flare stacks. Methods for operating the pilot assemblies are also disclosed.