Abstract: A combustor is described for use in populated areas which may be elevated, and mounted on the roof of a building or which may be mounted on the ground, the combustor being adapted for waste gas having a very low btu content, or is a very dirty gas containing tars and particulate material, or is a very low pressure gas which has insufficient kinetic energy to mix readily with air, an upright combustion chamber open at the top being employed surrounded by an acoustical fence to reduce transmission of noise from the combustion and from secondary air supplied over the fence to reduce wind effect, and to reduce light transmission from the combustion process, the burners being disposed beneath a radiation floor and being independent and separately removable for cleaning without shut down of the combustor.

Abstract: A multiple pilot system is shown for ignition of waste gas from a flare burner, provisions being made to reduce or limit the pilots for ignition at the most effective location as determined by the wind direction and further, if desired by the wind velocity, the reduction in the number of pilots effecting substantial savings of combustible gas. Provision is made for emergency supply of gas to the pilots as desired.

Abstract: A flare burner of the ground flare type for incinerating waste combustible gas from refineries and the like is disclosed, for use in populated areas, which has a plurality of waste gas burner heads for simultaneous operation at the same level, which may be utilized as a ground flare or which may, in a modified form, be elevated and provided with a bottom heat shield, which can have additional combustible liquid waste burners in one or more side walls, the flare burner having a combustion chamber with an improved panel construction and a fence of the knock out type to minimize wind effects and to provide an acoustical barrier so that noise transmission horizontally from the lower air inlets is greatly reduced.

Abstract: A ground flare for burning of waste gas is disclosed having groups of burners in a pit for selective utilization in accordance with the quantity of gas to be burned together with controls therefor, and with provisions for reducing expansion of the headers carrying the gas. The burners are in groups, the burners in each succeeding group being in a predetermined increasing number to provide great variability in capacity of gas to be burned and with the burners being utilized more effectively than heretofore upon variation in the quantity of the waste gas delivered to be burned.

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 mixed with steam at the end of the flare burner, the steam being introduced into the flare gas flow and at the center of the vortex of the flow. The apparatus includes vanes to mix the gases and steam and acoustically lined baffling to reduce noise.

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.

Abstract: A tall stack construction which may be used for the discharge of products of combustion or may be used as a flare stack with a burner at the top end for combustion of waste products from oil refineries or other chemical processes, the stack pipe being supported by a derrick in the form of a tripod with lateral support guy wires each extending over a pulley carried by one of the tripod legs and with their ends connected to a plate on the stack pipe. Additional stability is obtained by diagonal guy wires in tension extending from the bottom of the stack to the foundation in one embodiment. The stack pipe may be fixed to the derrick at the top or the bottom, may have a disentrainment drum at the bottom and may be supported in slidable engagement at the top of the derrick for expansion and for separation of the disentrainment drum.