Patent
Process for the production of fumed silica
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TLDR
In this article, a process for the production of fumed silica is described, in which a silicon halide feedstock comprising about 80% to 100% methyltrichlorosilane is combined with hydrogen gas and oxygen gas to form a reactant mixture.Abstract:
The invention provides a process for the production of fumed silica. The process comprises providing a silicon halide feedstock comprising about 80% to 100% methyltrichlorosilane, combining the silicon halide feedstock with hydrogen gas and oxygen gas to form a reactant mixture, discharging the reactant mixture out of a burner, and combusting the hydrogen gas and the oxygen gas of the reactant mixture so as to hydrolyze the silicon halide feedstock to produce fumed silica. Hydrogen (H2) is present in a mole fraction of about 0.11 or less based on the reactant mixture, and/or the velocity of the reactant mixture upon exiting the burner is about 25 m/s or more.read more
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References
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Journal ArticleDOI
Aggregation and growth of submicron oxide particles in flames
Gail D Ulrich,John W Rieh +1 more
TL;DR: In this article, the growth of aerosol particles in concentrated silica synthesis flames was measured by laser light scattering, and the rate of aggregate growth was precisely described by a model based on Brownian collision frequencies.
Journal ArticleDOI
Dependence of turbulent burning velocity on turbulent reynolds number and ratio of flaminar burning velocity to R.M.S. turbulent velocity
R.G. Abdel-Gayed,Derek Bradley +1 more
TL;DR: In this paper, the double kernel method was used to measure premixed hydrogen-air turbulent burning velocities, made by four high speed fans within the explosion vessel during explosions.
Patent
Process for the production of finely divided oxides
TL;DR: In this paper, a process for the production of a finely divided oxide of a metal or silicon by the hydrolytic conversion of a volatile corresponding metal halide or silicon halide in a flame is described.
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Process for the production of finely-divided metal and metalloid oxides
TL;DR: In this article, a process and apparatus for the production of finely-divided metal and metalloid oxides by flame hydrolysis of corresponding metal and metaloid halides is provided.
Patent
Process for the production of finely-divided metal and metalloid oxides
TL;DR: In this paper, an improved process and apparatus for the production of finely-divided metal and metalloid oxides by flame hydrolysis of corresponding metal and metaloid halides whereby fouling of burner apparatus is substantially completely avoided.