Method and system for lancing gas into an environment with variable entrainment of non-lanced gas
AssigneeAmerican Air Liquide, Inc.
InventorsOvidiu Marin, Mahendra L. Joshi, Olivier Charon, Harley A. Borders
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Abstract
A system and method are disclosed for lancing gas into an environment, such as a furnace, wherein an inner conduit is in communication with a gas supply and adapted to transport a gas at a first mass flow rate, and an outer conduit is in communication with a gas supply and adapted to transport a gas at a second mass flow rate. The first mass flow rate is greater than the second mass flow rate, preferably at least two times greater. The distal end of the inner conduit is preferably recessed back at a distance from the distal end of the outer conduit.
Claims32
A method of lancing gas into an environment, comprising the steps of:
- providing an inner conduit;
- injecting a first gas at a first mass flow rate through the inner conduit;
- providing an outer conduit having a cylindrical body with a first inner diameter and a distal end with a second diameter, wherein the first inner diameter is substantially equal to the second diameter;
- and
- injecting a second gas at a second mass flow rate through a second gas flow path defined by an outer surface of the inner conduit and an inner surface of the outer conduit, the inner and outer conduits being concentric, and the first mass flow rate being greater than the second mass flow rate.
Dependencies are inferred from the claim text.