Process for the production of finely-divided metal and metalloid oxides
AssigneeCabot Corporation
InventorKam Bor Lee
Life of this patent
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Abstract
There is provided a process and apparatus for the production of finely-divided metal and metalloid oxides by flame hydrolysis of corresponding metal and metalloid halides whereby burner fouling is minimized and burner fabrication is facilitated by transpiration of a fuel gas or vapor along the boundaries of each halide-containing stream as it is discharged from the burner into a reaction zone.
Claims6
In a process for the production of finely-divided metal or metalloid oxides by vapor phase hydrolysis of corresponding metal or metalloid halide feedstocks in the presence of a flame provided by combustion of a hydrogen-containing fuel with an oxygen-containing gas, the improvement which comprises:
- flowing the feedstock vapor through burner means as one or more enclosed streams thereof and discharging it therefrom into a reaction zone, and
- at the dischange end of said burner means, transpiring through a porous diffusion means a hydrogen-containing fuel gas or vapor at a fouling preventive rate along and surrounding each boundary of each such enclosed feedstock vapor-containing steam.
Dependencies are inferred from the claim text.