Fluidized bed reactor systems and distributors for use in same
AssigneeSunEdison, Inc.
InventorHenry F. Erk
Life of this patent
Estimating the term…
Abstract
Fluidized bed reactor systems and distributors are disclosed as well as processes for producing polycrystalline silicon from a thermally decomposable silicon compound such as trichlorosilane. The processes generally involve reduction of silicon deposits on reactor walls during polycrystalline silicon production by use of a silicon tetrahalide.
Claims17
A distributor for distributing a first gas and a second gas and a third gas into a reaction chamber comprising at least one reaction chamber wall, the distributor comprising a plurality of distribution openings including a plurality of peripheral openings, a plurality of interior openings and a plurality of central openings, each distribution opening having a channel portion and a flare-out portion and a throttle portion disposed between the channel portion and flare-out portion, the peripheral openings having channel portions that are angled toward the interior openings from the bottom to the top of the distributor, and throttle portions and flare-out portions that are parallel with a longitudinal axis of the distributor, wherein the peripheral openings are configured to provide fluid communication with the source of first gas and not the source of second gas or the source of third gas.
A fluidized bed reactor system comprising a reaction chamber comprising at least one reaction chamber wall and a distributor for distributing gas into the reaction chamber and comprising a plurality of distribution openings which provide fluid communication between the reaction chamber and a source of a first gas, a source of a second gas and a source of third gas, each distribution opening having a channel portion, a flare-out portion and a throttle portion disposed between the channel portion and flare-out portion, the distributor having a plurality of cones, the flare-out portion being in fluid communication with the throttle portion of the distribution opening and a cone, the plurality of distribution openings comprising a plurality of peripheral openings having channel portions that are angled toward the interior openings from the bottom to the top of the distributor, and throttle portions and flare-out portions that are parallel with a longitudinal axis of the distributor, a plurality of interior openings and a plurality of central openings, wherein the peripheral openings are configured to provide fluid communication with the source of first gas and not the source of second gas or the source of third gas.
Dependencies are inferred from the claim text.