Fluidized-bed reactor produces highly pure polycrystalline silicon particles with diameters approximately greater than 400 micrometers. Operates by pyrolysis of silane in reaction zone, which is bed of silicon seed particles fluidized by flow of silane and carrier gas. Above reaction zone, gas mixture flows rapidly enough to entrain silicon powders, but not larger seed and product particles. Entrained particles swept out of reactor. Applicable to other processes such as production of fine metal and ceramic powders where control of sizes of product needed.
Removing Undesired Fine Powder From Silicon Reactor
NASA Tech Briefs ; 16 , 8
1992-08-01
Sonstige
Keine Angabe
Englisch
Preventing Aim At An Undesired Target
NTRS | 1991
|Undesired quick action of brakes
Engineering Index Backfile | 1913