Chemistry of inorganic compounds – Silicon or compound thereof – Elemental silicon
Patent
1984-01-20
1987-02-10
Dixon, Jr., William R.
Chemistry of inorganic compounds
Silicon or compound thereof
Elemental silicon
423350, 422150, 422158, 427 86, 118716, C01B 3302
Patent
active
046422277
ABSTRACT:
A method and apparatus is disclosed for producing large particles of material from gas, or gases, containing the material (e.g., silicon from silane) in a free-space reactor comprised of a tube (20) and controlled furnace (25). A hot gas is introduced in the center of the reactant gas through a nozzle (23) to heat a quantity of the reactant gas, or gases, to produce a controlled concentration of seed particles (24) which are entrained in the flow of reactant gas, or gases. The temperature profile (FIG. 4) of the furnace is controlled for such a slow, controlled rate of reaction that virtually all of the material released condenses on seed particles and new particles are not nucleated in the furnace. A separate reactor comprised of a tube (33) and furnace (30) may be used to form a seed aerosol which, after passing through a cooling section (34) is introduced in the main reactor tube (34) which includes a mixer (36) to mix the seed aerosol in a controlled concentration with the reactant gas or gases.
REFERENCES:
patent: 3371997 (1968-03-01), Jordan et al.
patent: 4013420 (1977-03-01), Cheng
patent: 4084024 (1978-04-01), Schumacher
patent: 4154870 (1979-05-01), Wakefield
patent: 4241022 (1980-12-01), Kraus et al.
patent: 4292344 (1981-07-01), McHale
patent: 4314525 (1982-02-01), Hsu et al.
patent: 4327069 (1982-04-01), Cheng
"Silane Pyrolysis in a Free-Space Reactor," by James R. Lay & Sridhar K. Iya, Proc. of the 15th IEEE Photovoltaic Specialists Conference, Jun. 1981, pp. 565-568.
"The Effect of a Growing Aerosol on the Rate of Homogeneous Nucleation of a Vapor," by Andrew J. Pesthy, Richard C. Flagan & John H. Seinfeld, Journal of Colloid and Interface Science, vol. 82, No. 2, Aug. 1981, pp. 465-479.
"On the Modeling of Silane Pyrolysis in a Continuous Flow Reactor" by Ananda K. Praturi, Ravi Jain & George C. Hsu, Low-Cost Solar Array Project, DOE/JPL-1012-21.
"Capacitively-Heated Fluidized Bed, Preferential Heating of Seed Particles Aids Silicon Production" by E. J. McHale, NASA Tech Briefs, Spring 1981.
"The Behavior of Constant Rate Aerosol Reactors" by S. K. Friedlander Aerosol Science and Technology (1980) pp. 3-13.
"Aggregation and Growth of Submicron Oxide Particles in Flames" by Gail D. Ulrich and John W. Riehl, Journal of Colloid and Interface Science, vol. 87, No. 1, May 1982, pp. 257-265.
Alam Mohammed K.
Flagan Richard C.
California Institute of Technology
Capella Steven
Dixon Jr. William R.
LandOfFree
Reactor for producing large particles of materials from gases does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reactor for producing large particles of materials from gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reactor for producing large particles of materials from gases will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2362637