Abstract: A liquid seal mating system to accommodate thermal expansion during elevated-temperature operation, including a collar, sized and shaped to receive a discharge end of a gas-delivery conduit and a fence that surrounds the collar and is attached thereto, wherein when installed, the collar accommodates thermal expansion of the gas-delivery conduit along a longitudinal axis of the gas-delivery conduit and limits movement of the gas-delivery conduit perpendicular to the longitudinal axis. A method for suppressing bulk fluid motion in an elevated-temperature liquid seal, including attaching a mount to an outer shell of a liquid seal and receiving, within a mating collar, a discharge end of a gas-delivery conduit, the mating collar attached to the mount and being sized and shaped to accommodate thermal expansion of the gas-delivery conduit, filling the outer shell with liquid to submerge the discharge end of the gas-delivery conduit, and flowing gas through the gas-delivery conduit.

Abstract: A staged gas injection system for a flare tip that can discharge waste gas into a combustion zone is provided. The staged gas injection system includes, for example, a first gas injection assembly and a second stage gas injection assembly. The first gas injection assembly is configured to inject a gas (for example steam or a gas other than steam) at a high flow rate and a high pressure into the flare tip or the combustion zone. The second gas injection assembly is configured to inject a gas (for example, steam and/or a gas other than steam) at a low flow rate and a high pressure into the flare tip or the combustion zone. A flare tip including the staged gas injection system is also provided.

Abstract: A staged steam injection system for a flare tip that can discharge waste gas into a combustion zone is provided. The staged steam injection system includes, for example, a first gas injection assembly and a second stage gas injection assembly. The first gas injection assembly is configured to inject steam at a high flow rate and a high pressure into the flare tip or the combustion zone. The second gas injection assembly is configured to inject a gas (for example, steam and/or a gas other than steam) at a low flow rate and a high pressure into the flare tip or the combustion zone. A flare tip including the staged steam injection system is also provided.

Abstract: A staged steam injection system for a flare tip that can discharge waste gas into a combustion zone is provided. The staged steam injection system includes, for example, a first gas injection assembly and a second stage gas injection assembly. The first gas injection assembly is configured to inject steam at a high flow rate and a high pressure into the flare tip or the combustion zone. The second gas injection assembly is configured to inject a gas (for example, steam and/or a gas other than steam) at a low flow rate and a high pressure into the flare tip or the combustion zone. A flare tip including the staged steam injection system is also provided.

Abstract: A flare apparatus for burning combustible gases. A flare tip unit comprises an inner member and an outer member defining an annulus therebetween. The annulus defines an annular gas passage through which combustible gas passes. Air moved by a motive force, preferably steam, passes through the inner member and a steam/air mixture exits an outlet of the inner member. The combustible gas and an air/steam mixture mixes in a premix zone between the inner member outlet and the exit opening of the outer member. The combustible gas/air/steam mixture is ignited for burning in the atmosphere above the exit opening. The flare apparatus may include a plurality of flare tip units.

Abstract: A flare apparatus for burning combustible gases. A flare tip unit comprises an inner member and an outer member defining an annulus therebetween. The annulus defines an annular gas passage through which combustible gas passes. Air moved by a motive force, preferably steam, passes through the inner member and a steam/air mixture exits an outlet of the inner member. The combustible gas and an air/steam mixture mixes in a premix zone between the inner member outlet and the exit opening of the outer member. The combustible gas/air/steam mixture is ignited for burning in the atmosphere above the exit opening. The flare apparatus may include a plurality of flare tip units.