Method of producing nanoparticles using a...

B - Operations – Transporting – 01 – J

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B01J 2/04 (2006.01) B01J 19/24 (2006.01)

Patent

CA 2509516

The present invention provides a method and apparatus for the controlled synthesis of nanoparticles using a high temperature process. The reactor chamber includes a high temperature gas heated by means such as a plasma torch, and a reaction chamber. The homogenizer includes a region between the reactant inlets and the plasma (the spacer zone) to ensure that feeds from the reactant inlets are downstream of the recirculation zone induced by the high temperature gas. It also includes a region downstream of the reactant inlets that provides a nearly 1 dimensional (varying only in the axial direction) flow and concentration profile in the reaction zone to produce nanoparticles with narrow size distribution.

La présente invention concerne un procédé et un appareil pour la synthèse régulée des nanoparticules par l'utilisation d'un processus à haute température. La chambre du réacteur contient un gaz à haute température, chauffé par un moyen tel qu'une torche à plasma, et une enceinte de réaction. L'homogénéiseur comporte une région entre les admissions de réactif et le plasma (zone d'espacement) afin d'assurer que les alimentations des admissions de réactif sont en aval de la zone de recyclage induite par le gaz à haute température. Il inclut également une région en aval des admissions de réactif qui constitue presque un écoulement unidimensionnel (changeant seulement dans la direction axiale) et un profil de concentration dans la zone de réaction afin de produire des nanoparticules de distribution de taille étroite.

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