Method of treating a gas stream and method of operating an apparatus for producing a three-dimensional work piece
AssigneeNikon SLM Solutions AG
InventorsMatthew Schulz-Sciberras, Patrick Sharp, Isabell Huebinger
Life of this patent
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Abstract
In a method of treating a gas stream (32) containing combustible and/or reactive particles (34) at least a part of the particles (34) contained in the gas stream (32) is separated from the gas stream (32) by means of a separation device (36). The particles (34) separated from the gas stream (32) by means of the separation device (36) are supplied to a collecting vessel (40). The supply of particles (34) to the collecting vessel (40) is interrupted. A flame retardant material (57) is supplied to the collecting vessel (40) so as to form a cover layer of flame retardant material (57) on the particles (34) contained in the collecting vessel (40).
Claims12
A method of treating a gas stream containing combustible and/or reactive particles, the method comprising:
- separating at least a part of the particles contained in the gas stream from the gas stream by means of a separation device, wherein the separation device comprises a filter for filtering the particles from the gas stream which is directed through the filter, the filter being coated with a flame retardant material in order to prevent undesired reactions of the particles within the separation device, the flame retardant material containing particles having a particle size larger than 30 μm;
- supplying the particles separated from the gas stream by means of the filter of the separation device to a collecting vessel;
- interrupting the supply of particles to the collecting vessel;
- and
- supplying a flame retardant material to the collecting vessel so as to form a cover layer of flame retardant material on the particles contained in the collecting vessel.
Dependencies are inferred from the claim text.