Fluid wall reactor and method for production of fibers

Details Fluid wall reactor and method for production of fibers Fluid wall reactor and method for production of fibers

D - Textiles, Paper

01

F

23/405, 18/576

D01F 9/08 (2006.01) B01J 3/00 (2006.01) B01J 12/00 (2006.01) C30B 25/00 (2006.01)

Patent

CA 1254356

FLUID WALL REACTOR AND METHOD FOR PRODUCTION OF FIBERS ABSTRACT The reactor tube 20 for a high-temperature fluid wall reactor is heated to incandescence and radiates energy inwardly to a reaction zone. The tube 20 is perforated to form an inert gas protective fluid wall for preventing reactant products from contacting the tube. Inert gas jets 86 are formed each having a substantially radially-directed momentum sufficient to repel the reactants. Sections of the reactor tube may remain unperforated, but are protected by the downstream flow of the injected inert gas. A whisker fiber material and continuous flow production methods are also provided. Feedstock comprised of forms of silicon and a reductant are vaporized in the tube 20 and rapidly cooled. Yield is enhanced by reducing feedstock particle size and providing a gaseous reductant, such as sand flour and methane, respectively. Process variables control yield, uniformity, and surface area of the material which is comprised substantially of silicon and/or silicon oxide whiskers in varying proportions.

489419

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