Hybrid Flare Apparatus

A hybrid flare assembly for waste gas combustion, comprising:

• a shell defining a duct, the shell including an exhaust portion extending from an offset portion;
• an ignitor for igniting the waste gas, the ignitor mounted to a shaft for longitudinal movement within the exhaust portion;
• and
• a first plurality of risers at least partially arrayed about the ignitor shaft for conducting high pressure gas from a first high pressure inlet to a combustion chamber.

A hybrid flare assembly for waste gas combustion, comprising:

• a flare stack;
• a shell attached to and extending from the flare stack, defining a duct, and including an offset portion and an exhaust portion;
• an ignitor for igniting the waste gas, the ignitor mounted to a shaft for longitudinal movement within the exhaust portion of the shell;
• and
• a first plurality of risers at least partially arrayed about the ignitor shaft for conducting a first gas flow from a first inlet to a combustion chamber.

A method of combusting waste gas by a flare, comprising the steps of:

• conducting a low pressure gas flow from a low pressure gas inlet to a combustion chamber;
• conducting a first high pressure gas flow from a first high pressure gas inlet to a first plurality of risers at least partially arrayed about an ignitor shaft;
• conducting a second high pressure gas flow from a second high pressure gas inlet to a second plurality of risers at least partially arrayed about the first plurality of risers and the ignitor shaft to the combustion chamber;
• mixing the low pressure gas flow, and the first and second high pressure gas flows with an air flow;
• and
• combusting the mixed low pressure gas flow, the first and second high pressure gas flows, and the air flow within the combustion chamber.