Abstract: A flare stack gas burner for waste combustible gas from oil refineries, chemical plants, oil production rigs, LPG and other marketing terminals, pipe lines and the like is disclosed which includes a stack providing a combustible gas delivery pipe with a plurality of outwardly extending hollow vanes at the top with fixed inclined nozzles along the tops of the vanes for discharge of the combustible gas in a plurality of flat inclined streams at an inclination of the order of 45.degree. from the horizontal in a hollow frustoconical vortex combustion path, the inclined streams inducing air on each face and into the vortex path and around the exterior for completing combustion. The effective contact of the air and mixing of the air with the combustible gas and burning gas provides smokeless combustion. A vent seal is provided to prevent entry of air into the stack.

Abstract: A flare stack gas burner for waste combustible gas from oil refineries, chemical plants, oil production rigs, LPG and other marketing terminals, pipe lines and the like is disclosed which includes a stack with a centrally disposed combustible gas delivery pipe having a divider at the top with arms for upward delivery of the combustible waste gas through a plurality of radial slots to a mixing space, air under pressure being supplied to the stack and between the arms to the mixing space, a rotary diffuser being provided above the mixing space for directing the combustible gas-air mixture for combustion thereabove in a cylindrical or flaring frusto-conical vortex for smokeless combustion. Suitable gas pilots and igniters are employed. An optional flaring frusto-conical shield may be provided for a portion of the burning vortex where required.

Abstract: A crude oil burner is provided particularly suited for oil well testing in Arctic and sub-Arctic regions having a plurality of aligned and spaced air cones to the rear end of which crude oil is delivered, and into which air is induced. Air is also available at the space between the cones and at the front of the front cone. Gas assist heads are provided connected to a ring at the space between the cones and connected to a ring at the front of the front cone for inducing air and aiding in the combustion of the crude oil to provide smokeless combustion. The burner can be mounted for turning in accordance with the wind direction to avoid undesired deflection of the flame by the wind.

Abstract: A flare gas burner is described for the smokeless combustion of flare gas at low noise level with the flare gas delivered in a hollow whirling path for burning, ignited and burned with air and steam delivered interiorly and exteriorly, also in whirling paths intersecting or overlapping the delivered flare gas, additional steam being supplied at the outer margin of the outer air path, a diffuser being provided for the interior air and steam. The structure is also provided with a diode in the gas path to prevent flashback and with accoustically lined baffling to reduce noise.