Patents by Inventor Simon PEDRON

Simon PEDRON has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10974218
    Abstract: A subject of the invention is a fluidized-bed reactor for producing granular polycrystalline silicon. The fluidized-bed reactor comprises a segmented reactor tube, which is disposed between a reactor top and a reactor bottom, a heating facility, at least one nozzle for supplying fluidizing gas, at least one nozzle for supplying reaction gas, a facility for supplying silicon seed particles, a product removal line, and an offgas removal line. The segmented reactor tube comprises a base segment and at least one spacer segment, there being disposed, between base segment and spacer segment, a flat seal made from a carbon-containing material, the spacer segment consisting of a material which, within a temperature range from 100 to 950° C., has a thermal conductivity of <2 W/mK.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: April 13, 2021
    Assignee: Wacker Chemie AG
    Inventors: Simon Pedron, Bernhard Baumann, Gerhard Forstpointner
  • Patent number: 10899626
    Abstract: The fluidized bed process for preparing polysilicon by chemical vapor deposition is improved by positioning at least one Laval nozzle upstream from a gas inlet into the reactor.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: January 26, 2021
    Assignee: WACKER CHEMIE AG
    Inventors: Simon Pedron, Gerhard Forstpointner
  • Publication number: 20200188870
    Abstract: A subject of the invention is a fluidized-bed reactor for producing granular polycrystalline silicon. The fluidized-bed reactor comprises a segmented reactor tube, which is disposed between a reactor top and a reactor bottom, a heating facility, at least one nozzle for supplying fluidizing gas, at least one nozzle for supplying reaction gas, a facility for supplying silicon seed particles, a product removal line, and an offgas removal line. The segmented reactor tube comprises a base segment and at least one spacer segment, there being disposed, between base segment and spacer segment, a flat seal made from a carbon-containing material, the spacer segment consisting of a material which, within a temperature range from 100 to 950° C., has a thermal conductivity of <2 W/mK.
    Type: Application
    Filed: August 23, 2017
    Publication date: June 18, 2020
    Applicant: WACKER CHEMIE AG
    Inventors: Simon PEDRON, Bernhard BAUMANN, Gerhard FORSTPOINTNER
  • Patent number: 10562777
    Abstract: Prolonged operation campaigns in a fluidized bed reactor for producing granular polysilicon by deposition of silicon onto silicon seed particles from a silicon-containing precursor gas is made possible by employing a silicon-coated reaction tube which is not insulated above a region of the fluidized bed and as a result has a lower temperature such that the ratio of the thickness of the silicon on the reactor tube adjoining the fluidized bed to the coating thickness over the total reactor tube is from 7:1 to 1.5 to 1 after production campaign of from 15 to 500 days.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: February 18, 2020
    Assignee: WACKER CHEMIE AG
    Inventor: Simon Pedron
  • Publication number: 20190055130
    Abstract: Prolonged operation campaigns in a fluidized bed reactor for producing granular polysilicon by deposition of silicon onto silicon seed particles from a silicon-containing precursor gas is made possible by employing a silicon-coated reaction tube which is not insulated above a region of the fluidized bed and as a result has a lower temperature such that the ratio of the thickness of the silicon on the reactor tube adjoining the fluidized bed to the coating thickness over the total reactor tube is from 7:1 to 1.5 to 1 after production campaign of from 15 to 500 days.
    Type: Application
    Filed: February 23, 2017
    Publication date: February 21, 2019
    Applicant: Wacker Chemie AG
    Inventor: Simon PEDRON
  • Publication number: 20190032203
    Abstract: In situ coating of the reactor tube of a CVD fluidized bed reactor for producing granular polysilicon allows a wider selection of reactor tube materials to be used and provides granular polysilicon product of higher purity.
    Type: Application
    Filed: February 23, 2017
    Publication date: January 31, 2019
    Applicant: Wacker Chemie AG
    Inventor: Simon PEDRON
  • Publication number: 20180345239
    Abstract: By disposing a radiation shield between a heater insulator and the heater in a fluidized bed reactor for producing granular polysilicon, significant energy savings are obtained.
    Type: Application
    Filed: November 7, 2016
    Publication date: December 6, 2018
    Applicant: Wacker Chemie AG
    Inventor: Simon PEDRON
  • Publication number: 20180297852
    Abstract: Campaigns for the production of polycrystalline silicon granules in a fluidized bed process are lengthened by employing an inner reaction tube within the fluidized bed reactor which has a low ash content, preferably a coefficient of thermal expansion similar to that of silicon carbide, and has a silicon carbide coating layer consisting of at least 99.995 wt. % of silicon carbide with a thickness of from 5 ?m to 700 ?m.
    Type: Application
    Filed: November 9, 2016
    Publication date: October 18, 2018
    Applicant: Wacker Chemie AG
    Inventors: Simon PEDRON, Bernhard BAUMANN
  • Publication number: 20170158516
    Abstract: A fluidized-bed reactor for preparing granular polycrystalline silicon has a reactor vessel, a reactor tube and a reactor bottom within the reactor vessel, and an intermediate jacket located between the reactor tube and the reactor vessel, a heating device, at least one bottom gas nozzle for introducing of fluidizing gas and at least one secondary gas nozzle for introducing reaction gas, a silicon seed particle feed, an offtake line for granular polycrystalline silicon and reactor offgas discharge, wherein a main element of the reactor tube comprises at least 60% by weight of silicon carbide with a CVD coating having a layer thickness of at least 5 ?m and is at least 99.995% by weight of SiC, or a main element of the reactor tube is a sapphire glass comprising at least 99.99% by weight of ?-Al2O3.
    Type: Application
    Filed: June 19, 2015
    Publication date: June 8, 2017
    Applicant: Wacker Chemie AG
    Inventors: Simon PEDRON, Bernhard BAUMANN, Gerhard FORSTPOINTNER
  • Publication number: 20160107894
    Abstract: Production of granular polysilicon is made more economical by extracting heat from the hot off-gas from the fluidized bed reactor to heat at least one of a fluidizing gas, reactant gas, silicon feed particles, or an aqueous medium.
    Type: Application
    Filed: May 21, 2014
    Publication date: April 21, 2016
    Applicant: WACKER CHEMIE AG
    Inventor: Simon PEDRON
  • Publication number: 20160101982
    Abstract: The fluidized bed process for preparing polysilicon by chemical vapor deposition is improved by positioning at least one Laval nozzle upstream from a gas inlet into the reactor.
    Type: Application
    Filed: April 28, 2014
    Publication date: April 14, 2016
    Inventors: Simon PEDRON, Gerhard FORSTPOINTNER