Rec Silicon Inc

Fluor Technologies Corporation

Gerald A Zeininger

Michael V Spangler

Walter J Stupin

Matthew J Miller

E Wayne Osborne

Garry E Jacobs

Robert J Geertsen

William J Onstot

Levi C Allen

Paul E Ege

Steven W Stupin

Stein Julsrud

Kahl Brown

Benjamin Center

Nathan Barber

A method of controlling particle additions to a fluidized bed reactor includes measuring pressure fluctuations inside the fluidized bed reactor over a selected time period, determining a pressure parameter indicative of amplitudes of the pressure fluctuations, comparing the pressure parameter to a specified threshold, and controlling particle additions to the fluidized bed reactor when the pressure parameter deviates from the specified threshold.

Pressure-based control of fluidized bed reactor

Segmented silicon carbide liners for use in a fluidized bed reactor for production of polysilicon-coated granulate material are disclosed, as well as methods of making and using the segmented silicon carbide liners. Non-contaminating bonding materials for joining silicon carbide segments also are disclosed. One or more of the silicon carbide segments may be constructed of reaction-bonded silicon carbide.

Joint design for segmented silicon carbide liner in a fluidized bed reactor

Segmented silicon carbide liner

Fluidized bed reactor systems for producing high purity silicon-coated particles are disclosed. A vessel has an outer wall, an insulation layer inwardly of the outer wall, at least one heater positioned inwardly of the insulation layer, a removable concentric liner inwardly of the heater, a central inlet nozzle, a plurality of fluidization nozzles, at least one cooling gas nozzle, and at least one product outlet. The system may include a removable concentric sleeve inwardly of the liner. In particular systems the central inlet nozzle is configured to produce a primary gas vertical plume centrally in the reactor chamber to minimize silicon deposition on reactor surfaces.

Fluid bed reactor

A multi-phase fluid is split in a flow splitting device that includes a feed pipe in which a flow redistribution element induces tangential motion in the phases such that the denser phase is forced to redistribute around the periphery of the feed pipe. The so redistributed flow is then split into two or more distribution conduits that are typically perpendicular to the flow direction of the feed flow. Most typically, the feed pipe is in a vertical position.

Methods and apparatus for splitting multi-phase flow

A flow distribution device () has a vane distributor () at least partially disposed within a cartridge () and is operationally coupled to a second distributing device () that receives output from the vane distributor () Especially preferred flow distribution devices () are disposed within a vessel containing a contact bed, and may include at least a second vane distributor () within the cartridge (), wherein the vane distributors () are preferably swirl-inducing vane distributors ().

Methods and apparatus for mixing and distributing fluids

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Long Beach, CA, United States of America

Gerald A Zeininger