Patents Assigned to REC Silicon Inc.
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Patent number: 9463982Abstract: Embodiments of a method for reducing iron silicide and/or iron phosphide fouling and/or corrosion in a hydrochlorosilane production plant are disclosed. Sufficient trichlorosilane is included in a silicon tetrachloride process stream to minimize hydrogen chloride formation, thereby inhibiting iron (II) chloride formation and reducing iron silicide and/or iron phosphide fouling, superheater corrosion, or a combination thereof.Type: GrantFiled: October 19, 2012Date of Patent: October 11, 2016Assignee: REC Silicon IncInventors: Stein Julsrud, Anja Olafsen Sjastad
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Patent number: 9446367Abstract: 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.Type: GrantFiled: August 15, 2014Date of Patent: September 20, 2016Assignee: REC Silicon IncInventors: Matthew J. Miller, Michael V. Spangler, Gerald A. Zeininger, William J. Onstot, Walter J. Stupin
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Patent number: 9440262Abstract: Methods and apparatus for separating polysilicon powder from a mixture of granular polysilicon and polysilicon powder are disclosed. The method includes tumbling the polysilicon material in a tumbling device. The tumbling device includes a tumbler drum having one or more lifting vanes spaced apart from one another and extending longitudinally along an interior surface of the tumbler drum. The lifting vanes facilitate separation of polysilicon powder and granules as the tumbler drum is rotated about its longitudinal axis of rotation.Type: GrantFiled: November 7, 2014Date of Patent: September 13, 2016Assignee: REC Silicon IncInventor: Robert J. Geertsen
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Patent number: 9404177Abstract: Embodiments of an obstructing member and methods for its use in a fluidized bed reactor are disclosed. The obstructing member comprises a plurality of receiving members, each receiving member comprising a tubular wall defining a passageway dimensioned to receive an internal reactor component, and a plurality of connecting elements connecting the receiving members, wherein the obstructing member occupies from 15-60% of a horizontal cross-section of a reaction chamber of the fluidized bed reactor.Type: GrantFiled: August 18, 2014Date of Patent: August 2, 2016Assignee: REC Silicon IncInventors: Michael V. Spangler, Matthew J. Miller
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Publication number: 20160186319Abstract: Fluidized bed reactor systems for producing high purity silicon-coated particles are disclosed. A vessel has an outer shell, an insulation layer inwardly of the outer shell, a concentric inner shell inwardly of the outer shell, and a concentric liner that is positioned inwardly of the inner shell and that defines a reactor chamber. The inner shell and liner are sealed together at their bottoms by an O-ring seal arrangement to prevent gas in the reactor chamber from entering a space between the inner shell and the liner. A central inlet nozzle produces a vertical gas plume in the reactor chamber.Type: ApplicationFiled: December 21, 2015Publication date: June 30, 2016Applicant: REC Silicon IncInventors: Michael V. Spangler, Jeffrey A. Hansen, Matthew J. Miller
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Patent number: 9352971Abstract: Silane and hydrohalosilanes of the general formula HySiX4-y (y=1, 2, or 3) are produced by reactive distillation in a system that includes a fixed-bed catalytic redistribution reactor that can be back-flushed during operation.Type: GrantFiled: June 14, 2013Date of Patent: May 31, 2016Assignee: REC Silicon IncInventor: William C. Breneman
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Publication number: 20160129478Abstract: Methods and apparatus for separating polysilicon powder from a mixture of granular polysilicon and polysilicon powder are disclosed. The method includes tumbling the polysilicon material in a tumbling device. The tumbling device includes a tumbler drum having one or more lifting vanes spaced apart from one another and extending longitudinally along an interior surface of the tumbler drum. The lifting vanes facilitate separation of polysilicon powder and granules as the tumbler drum is rotated about its longitudinal axis of rotation.Type: ApplicationFiled: November 7, 2014Publication date: May 12, 2016Applicant: REC SILICON INCInventor: Robert J. Geertsen
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Publication number: 20160045878Abstract: 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.Type: ApplicationFiled: August 15, 2014Publication date: February 18, 2016Applicant: REC Silicon IncInventors: Sefa Yilmaz, Matthew J. Miller, Michael V. Spangler, Barry Wemp, Stein Julsrud
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Publication number: 20160045880Abstract: 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.Type: ApplicationFiled: August 15, 2014Publication date: February 18, 2016Applicant: REC Silicon IncInventors: Matthew J. Miller, William J. Onstot, Walter J. Stupin, Michael V. Spangler, Gerald A. Zeininger
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Publication number: 20160045881Abstract: 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.Type: ApplicationFiled: August 15, 2014Publication date: February 18, 2016Applicant: REC Silicon IncInventors: Michael V. Spangler, Matthew J. Miller, Sefa Yilmaz
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Publication number: 20160047043Abstract: Embodiments of an obstructing member and methods for its use in a fluidized bed reactor are disclosed. The obstructing member comprises a plurality of receiving members, each receiving member comprising a tubular wall defining a passageway dimensioned to receive an internal reactor component, and a plurality of connecting elements connecting the receiving members, wherein the obstructing member occupies from 15-60% of a horizontal cross-section of a reaction chamber of the fluidized bed reactor.Type: ApplicationFiled: August 18, 2014Publication date: February 18, 2016Applicant: REC SILICON INCInventors: Michael V. Spangler, Matthew J. Miller
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Patent number: 9254470Abstract: Transition support rings for joining tubular segments of different inner cross-sectional dimensions to make segmented liners for use in a fluidized bed reactor (FBR) for making polysilicon-coated granulate material are disclosed. Segmented liners comprising the transition support rings and fluidized bed reactors including segmented liners are also disclosed.Type: GrantFiled: October 10, 2014Date of Patent: February 9, 2016Assignee: REC Silicon IncInventor: Michael V. Spangler
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Patent number: 9238211Abstract: 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.Type: GrantFiled: August 15, 2014Date of Patent: January 19, 2016Assignee: REC Silicon IncInventors: E. Wayne Osborne, Matthew J. Miller, Michael V. Spangler, Gerald A. Zeininger, William J. Onstot, Walter J. Stupin
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Patent number: 9212421Abstract: A method and fluidized bed reactor for reducing or eliminating contamination of silicon-coated particles are disclosed. The metal surface of one or more fluidized bed reactor components is at least partially coated with a hard protective layer comprising a material having an ultimate tensile strength of at least 700 MPa at 650° C.Type: GrantFiled: July 10, 2013Date of Patent: December 15, 2015Assignee: REC Silicon IncInventors: Matthew J. Miller, Michael V. Spangler
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Patent number: 9023425Abstract: 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.Type: GrantFiled: November 17, 2010Date of Patent: May 5, 2015Assignee: REC Silicon IncInventors: E. Wayne Osborne, Michael V. Spangler, Levi C. Allen, Robert J. Geertsen, Paul E. Ege, Walter J. Stupin, Gerald Zeininger
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Patent number: 8926929Abstract: Silicon granules are produced by chemical vapor deposition on seed particles inside a chamber within a fluidized bed reactor. The chamber contains an obstructing member, or bubble breaker, which is sized and shaped to restrict the growth of bubbles inside the chamber and which has interior passageways through which a heated fluid passes to transfer heat to gas inside the chamber.Type: GrantFiled: January 11, 2010Date of Patent: January 6, 2015Assignee: REC Silicon IncInventors: Michael V. Spangler, Glen Stucki
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Publication number: 20140314655Abstract: Methods for reducing iron silicide and/or iron phosphide fouling and/or corrosion in a hydrochlorosilane production plant are disclosed. Sufficient hydrogen is added to a silicon tetrachloride process stream to inhibit iron (II) chloride formation and reduce iron suicide and/or iron phosphide fouling, superheater corrosion, or a combination thereof. Trichlorosilane also may be added to the silicon tetrachloride process stream.Type: ApplicationFiled: April 2, 2014Publication date: October 23, 2014Applicant: REC Silicon IncInventors: Stein Julsrud, Anja Olafsen Sjastad
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Publication number: 20140174353Abstract: Embodiments of a reaction chamber liner for use in a heated silicon deposition reactor are disclosed. The liner has an upper portion, a mid portion comprising a material other than a stainless steel alloy, and a lower portion comprising a martensitic stainless steel alloy. The liner's upper portion may have a composition substantially similar to the lower portion.Type: ApplicationFiled: December 17, 2013Publication date: June 26, 2014Applicant: REC Silicon IncInventors: Michael V. Spangler, Matthew J. Miller
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Publication number: 20140123896Abstract: Embodiments of a probe assembly for a fluid bed reactor are disclosed. The probe assembly includes a fluid bed reactor (FBR) member, and a pressure tap comprising a wall defining a passageway within which the FBR member is located. Exemplary FBR members include, but are not limited to, a thermocouple, a seed pipe, a particle sampling line, a gas sampling line, a gas feed line, a heater, a second pressure tap, or a combination thereof. Disclosed embodiments of the probe assembly reduce or eliminate the need for support rods and rings within the fluid bed reactor, reduce component fouling within the reactor, and/or reduce product contamination.Type: ApplicationFiled: November 6, 2012Publication date: May 8, 2014Applicant: REC SILICON INCInventors: Matthew Miller, Michael V. Spangler, Barry Wemp, E. Wayne Osborne
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Publication number: 20140112832Abstract: Embodiments of a nozzle assembly and a closable valve assembly for use in a fluid bed reactor system are disclosed. The nozzle assembly includes a first member that extends upwardly through a bottom wall of a fluid bed reaction chamber, and a second member. The first and second members are detachably fitted together via threads on each member. The second member can be removed and/or replaced, thereby facilitating fluid bed reactor maintenance. The closable valve assembly is connected to a nozzle, and includes a valve body and a gate pivotally connected to the valve body. The gate is movable between a first position at least partially covering the nozzle orifice in the absence of gas flow through the orifice, and a second position wherein the orifice is not covered when gas flows through the orifice.Type: ApplicationFiled: October 19, 2012Publication date: April 24, 2014Applicant: REC SILICON INCInventor: Billy Gene Lacy