Inductive plasma torch with a reagent injector
AssigneeCentre National De La Recherche Scientifique
InventorChristian Trassy
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Abstract
The invention concerns an inductive plasma torch comprising an external tube, an intermediate tube and a central injector (16) including at least a central tube (20, 21) injecting reagent and a peripheral sheathing tube (22). A gas similar to plasma gas is injected into the space between the central tube (20, 21) and the sheathing tube (22), in conditions suited for obtaining a laminar flow, said flow remaining laminar up to the plasma torch central zone. The sheathing tube emerges substantially at the first turn of the inductor coil.
Claims6
An inductive plasma torch including an outer tube (10), an intermediary tube (14) and a central injector (16) including at least one central reactive injection tube (20, 21) and one peripheral sheathing tube (22),
- wherein a gas of same nature as the plasma gas is injected into the space included between the central tube (20, 21) and the sheathing tube (22) in conditions adapted to obtaining a laminar flow, this flow remaining laminar until the central plasma area of the torch is reached, and the sheathing tube substantially emerges at the level of the first turn of the induction coil (12).
Dependencies are inferred from the claim text.