System and method for flashback arrest and flame temperature reduction for hydrogen-based fuels

A method of combusting hydrogen-based fuel, comprising:

• flowing hydrogen-based fuel from a fuel source through a liquid contained in a liquid reservoir, wherein the hydrogen-based fuel forms a plurality of bubbles that rise through the liquid;
• allowing the plurality of bubbles to exit the liquid at a liquid-air interface;
• and
• igniting the plurality of bubbles after the plurality of bubbles exit the liquid, wherein the liquid acts as a barrier to arrest flashback toward the fuel source when flow of the hydrogen-based fuel is stopped.

A liquid-assisted burner system for hydrogen-based fuel combustion, comprising:

• a fuel source configured to supply hydrogen-based fuel;
• a bubbler containing a liquid, the bubbler configured to receive the hydrogen-based fuel and disperse the hydrogen-based fuel through the liquid to form a plurality of bubbles;
• and
• a water reservoir disposed coaxially around the bubbler and configured to catch liquid spillover from the bubbler, wherein the plurality of bubbles rise through the liquid and combust upon exiting the liquid at a liquid-air interface, and wherein the liquid arrests flashback by providing a barrier between the fuel source and combustion occurring above the liquid-air interface.