Patent application number | Description | Published |
20090000194 | Systems and Methods of Converting Fuel - Systems and methods for converting fuel are provided wherein the system comprises at least reactors configured to conduct oxidation-reduction reactions. The first reactor comprises a plurality of ceramic composite particles, wherein the ceramic composite particles comprises at least one metal oxide disposed on a support. The first reactor is configured to reduce the least one metal oxide with a fuel to produce a reduced metal or a reduced metal oxide. The second reactor is configured to oxidize the reduced metal or reduced metal oxide to produce a metal oxide intermediate. The system may also comprise a third reactor configured to oxidize the metal oxide intermediate to regenerate the metal oxide of the ceramic composite particles. | 01-01-2009 |
20090324479 | FLUIDIZED BED REACTOR SYSTEMS AND METHODS FOR REDUCING THE DEPOSITION OF SILICON ON REACTOR WALLS - Gas distribution units of fluidized bed reactors are configured to direct thermally decomposable compounds to the center portion of the reactor and away from the reactor wall to prevent deposition of material on the reactor wall and process for producing polycrystalline silicon product in a reactor that reduce the amount of silicon which deposits on the reactor wall. | 12-31-2009 |
20100150789 | SYSTEMS FOR PRODUCING SILICON TETRAFLUORIDE FROM FLUOROSILICATES IN A FLUIDIZED BED REACTOR - Systems for preparing silicon tetrafluoride by the thermal decomposition of an alkali or alkaline earth-metal fluorosilicate. The system includes a drying apparatus for removing moisture from a fluorosilicate feed; a fluidized bed reactor comprising a reaction chamber for thermal decomposition of fluorosilicate into silicon tetrafluoride gas and an alkali or alkaline earth-metal fluoride; a heater apparatus and an exhaust gas treatment system for treating gases discharged from the fluidized bed reactor. | 06-17-2010 |
20100150808 | PROCESSES FOR PRODUCING SILICON TETRAFLUORIDE FROM FLUOROSILICATES IN A FLUIDIZED BED REACTOR - Processes for preparing silicon tetrafluoride by the thermal decomposition of an alkali or alkaline earth-metal fluorosilicate in a fluidized bed reactor. A portion of silicon tetrafluoride that is generated in the decomposition reaction may be recycled to the reactor and used as a fluidizing gas to suspend the fluorosilicate material. Alkali or alkaline earth-metal fluoride residue generated in the decomposition reaction may be discharged from the reactor and reacted with fluorosilicic acid to produce an alkali or alkaline earth-metal fluorosilicate that may be introduced to the reactor for further generation of silicon tetrafluoride. | 06-17-2010 |
20110101504 | Methods of Grinding Semiconductor Wafers Having Improved Nanotopology - Methods for holding a workpiece with a hydrostatic pad are disclosed herein. The pad includes hydrostatic pockets formed in a face of the body directly opposed to the wafer. The pockets are adapted for receiving fluid through the body and into the pockets to provide a barrier between the body face and the workpiece while still applying pressure to hold the workpiece during grinding. The hydrostatic pads allow the wafer to rotate relative to the pads about their common axis. The pockets are oriented to reduce hydrostatic bending moments that are produced in the wafer when the grinding wheels shift or tilt relative to the hydrostatic pads, helping prevent nanotopology degradation of surfaces of the wafer commonly caused by shift and tilt of the grinding wheels. | 05-05-2011 |
20110158882 | Methods For Producing Silicon Tetrafluoride - Methods for producing silicon tetrafluoride by acid digestion of fluoride salts of alkali metal or alkaline earth metal and aluminum, optionally, in the presence of a source of silicon; methods for producing silane that include acid digestion of by-products of silane production to produce silicon tetrafluoride. | 06-30-2011 |
20110158896 | Methods For Producing Aluminum Trifluoride - Methods for producing aluminum trifluoride by acid digestion of fluoride salts of alkali metal or alkaline earth metal and aluminum, optionally, in the presence of a source of silicon; methods for producing silane that include acid digestion of by-products of silane production to produce aluminum trifluoride. | 06-30-2011 |
20110244124 | METHODS FOR PRODUCING POLYCRYSTALLINE SILICON THAT REDUCE THE DEPOSITION OF SILICON ON REACTOR WALLS - Gas distribution units of fluidized bed reactors are configured to direct thermally decomposable compounds to the center portion of the reactor and away from the reactor wall to prevent deposition of material on the reactor wall and process for producing polycrystalline silicon product in a reactor that reduce the amount of silicon which deposits on the reactor wall. | 10-06-2011 |
20110300050 | Trichlorosilane Vaporization System - A heat exchanger for vaporizing a liquid and a method of using the same are disclosed herein. The heat exchanger includes a housing, a tube, a heater, and a plurality of non-reactive members. The tube is disposed in the interior of the housing and has an inlet and an outlet. The heater is configured to heat the tube. The plurality of non-reactive members are disposed in an interior cavity of the tube in an arrangement such that a plurality of voids are defined between the members and the tube. The arrangement also permits liquid to pass through the voids and travel from the inlet of the tube to the outlet of tube. The plurality of non-reactive members and the tube transfer heat to the liquid as the liquid passes through the plurality of voids in order to vaporize the liquid. | 12-08-2011 |
20120079847 | PROCESSES FOR PURIFYING SILANE - Processes and systems for purifying silane-containing streams are disclosed with relatively less silane being lost in impurity streams by use of distillation and/or condensation operations. | 04-05-2012 |
20120079848 | SYSTEMS FOR PURIFYING SILANE - Processes and systems for purifying silane-containing streams are disclosed with relatively less silane being lost in impurity streams by use of distillation and/or condensation operations. | 04-05-2012 |
20120080303 | Systems for Recovering Silane From Heavy-Ends Separation Operations - Processes and systems for purifying silane-containing streams are disclosed with relatively less silane being lost in impurity streams by use of distillation and/or condensation operations. | 04-05-2012 |
20120080304 | Processes for Recovering Silane From Heavy-Ends Separation Operations - Processes and systems for purifying silane-containing streams are disclosed with relatively less silane being lost in impurity streams by use of distillation and/or condensation operations. | 04-05-2012 |
20120100042 | Production of Polycrystalline Silicon in Substantially Closed-Loop Systems - Production of polycrystalline silicon in a substantially closed-loop process is disclosed. The processes generally include decomposition of trichlorosilane produced from metallurgical grade silicon. | 04-26-2012 |
20120100059 | Production of Polycrystalline Silicon By The Thermal Decomposition of Trichlorosilane In A Fluidized Bed Reactor - Processes for producing polycrystalline silicon by thermal decomposition of trichlorosilane are disclosed. The processes generally involve thermal decomposition of trichlorosilane in a fluidized bed reactor operated at reaction conditions that result in a high rate of productivity relative to conventional production processes. | 04-26-2012 |
20120100061 | Production of Polycrystalline Silicon in Substantially Closed-loop Processes - Production of polycrystalline silicon in a substantially closed-loop process is disclosed. The processes generally include decomposition of trichlorosilane produced from metallurgical grade silicon. | 04-26-2012 |
20120160702 | METHODS FOR PRODUCING SILANE - Methods and systems for producing silane that use electrolysis to regenerate reactive components therein are disclosed. The methods and systems may be substantially closed-loop with respect to halogen, an alkali or alkaline earth metal and/or hydrogen. | 06-28-2012 |
20120164033 | SYSTEMS FOR PRODUCING SILANE - Methods and systems for producing silane that use electrolysis to regenerate reactive components therein are disclosed. The methods and systems may be substantially closed-loop with respect to halogen, an alkali or alkaline earth metal and/or hydrogen. | 06-28-2012 |
20120164323 | PRODUCTION OF POLYCRYSTALLINE SILICON BY THE THERMAL DECOMPOSITION OF DICHLOROSILANE IN A FLUIDIZED BED REACTOR - Processes for producing polycrystalline silicon by thermal decomposition of dichlorosilane are disclosed. The processes generally involve thermal decomposition of dichlorosilane in a fluidized bed reactor operated at reaction conditions that result in a high rate of productivity relative to conventional production processes. | 06-28-2012 |
20120173165 | SYSTEMS AND METHODS FOR PARTICLE SIZE DETERMINATION AND CONTROL IN A FLUIDIZED BED REACTOR FOR USE WITH THERMALLY DECOMPOSABLE SILICON-CONTAINING GAS - Systems and methods are provided for determining the size of particles within a fluidized bed reactor for use with thermally decomposable silicon-containing gas. The pressure of gas adjacent a gas inlet and adjacent a gas outlet of the reactor are measured with pressure sensors. An algorithm is applied to at least one of the pressure measurements to determine the size of particles within the reactor. The determined size of the particles can be used to control the operation of the reactor. | 07-05-2012 |
20120173170 | SYSTEMS AND METHODS FOR PARTICLE SIZE DETERMINATION AND CONTROL IN A FLUIDIZED BED REACTOR - Systems and methods are provided for determining the size of particles within a fluidized bed reactor. The pressure of gas adjacent a gas inlet and adjacent a gas outlet of the reactor are measured with pressure sensors. An algorithm is applied to at least one of the pressure measurements to determine the size of particles within the reactor. The determined size of the particles can be used to control the operation of the reactor. A dosing system and method is provided for measuring defined volumes of particles for transport to the reactor. | 07-05-2012 |
20120189501 | PRODUCTION OF POLYCRYSTALLINE SILICON IN SUBSTANTIALLY CLOSED-LOOP SYSTEMS THAT INVOLVE DISPROPORTIONATION OPERATIONS - Production of polycrystalline silicon in substantially closed-loop processes and systems is disclosed. The processes and systems generally involve disproportionation of trichlorosilane to produce silane or dichlorosilane and thermal decomposition of silane or dichlorosilane to produce polycrystalline silicon. | 07-26-2012 |
20120189527 | PRODUCTION OF POLYCRYSTALLINE SILICON IN SUBSTANTIALLY CLOSED-LOOP PROCESSES THAT INVOLVE DISPROPORTIONATION OPERATIONS - Production of polycrystalline silicon in substantially closed-loop processes and systems is disclosed. The processes and systems generally involve disproportionation of trichlorosilane to produce silane or dichlorosilane and thermal decomposition of silane or dichlorosilane to produce polycrystalline silicon. | 07-26-2012 |
20120230903 | METHODS FOR INTRODUCTING A FIRST GAS AND A SECEOND GAS INTO A REACTION CHAMBER - Gas distribution units of fluidized bed reactors are configured to direct thermally decomposable compounds to the center portion of the reactor and away from the reactor wall to prevent deposition of material on the reactor wall and process for producing polycrystalline silicon product in a reactor that reduce the amount of silicon which deposits on the reactor wall. | 09-13-2012 |
20130004405 | PROCESSES FOR PRODUCING SILANE IN A BUBBLE COLUMN - Methods for producing silane by reacting a hydride and a halosilane are disclosed. Some embodiments involve use of a column which is not mechanically agitated and in which reactants may be introduced in a counter-current arrangement. Some embodiments involve use of a baffled column which has multiple reaction zones. | 01-03-2013 |
20130071310 | PROCESS FOR REMOVING HYDROGEN SULFIDE FROM VERY SOUR HYDROCARBON GAS STREAMS USING METAL SULFIDE - A process for sweetening a gas stream containing hydrogen sulfide wherein said process comprises contacting said gas stream within a contacting zone a contacting composition comprising metal sulfide in a lower sulfided state and yielding from said contacting zone a product gas stream having a reduced hydrogen sulfide concentration and a recovered contacting composition comprising metal sulfide in a higher sulfided state. | 03-21-2013 |
20130071314 | PROCESS FOR PRODUCING HYDROGEN, SULFUR AND SULFUR DIOXIDE FROM HYDROGEN SULFIDE-CONTAINING GAS STREAMS - A process for making molecular hydrogen, elemental sulfur and sulfur dioxide from hydrogen sulfide. The process involves contacting a gas stream of hydrogen sulfide within a contacting zone with a contacting composition comprising metal sulfide in a lower sulfided state and yielding from the contacting zone a product gas stream comprising hydrogen and a recovered contacting composition comprising metal sulfide in a higher sulfided state. The higher metal sulfide is regenerated with oxygen to yield elemental sulfur and sulfur dioxide. | 03-21-2013 |
20130084233 | PRODUCTION OF POLYCRYSTALLINE SILICON BY THE THERMAL DECOMPOSITION OF SILANE IN A FLUIDIZED BED REACTOR - Processes for producing polycrystalline silicon by thermal decomposition of silane are disclosed. The processes generally involve thermal decomposition of silane in a fluidized bed reactor operated at reaction conditions that result in a high rate of productivity relative to conventional production processes. | 04-04-2013 |
20130084234 | PRODUCTION OF POLYCRYSTALLINE SILICON BY THE THERMAL DECOMPOSITION OF SILANE IN A FLUIDIZED BED REACTOR - Processes for producing polycrystalline silicon by thermal decomposition of silane are disclosed. The processes generally involve thermal decomposition of silane in a fluidized bed reactor operated at reaction conditions that result in a high rate of productivity relative to conventional production processes. | 04-04-2013 |
20130121888 | SYSTEMS FOR PRODUCING SILANE - Methods and systems for producing silane that use electrolysis to regenerate reactive components therein are disclosed. The methods and systems may be substantially closed-loop with respect to halogen, an alkali or alkaline earth metal and/or hydrogen. | 05-16-2013 |
20130195432 | TRICHLOROSILANE VAPORIZATION SYSTEM - A heat exchanger for vaporizing a liquid and a method of using the same are disclosed. The heat exchanger includes a housing, a tube, a heater, and a plurality of non-reactive members. The tube is disposed in the interior of the housing and has an inlet and an outlet. The heater is configured to heat the tube. The plurality of non-reactive members are disposed in an interior cavity of the tube in an arrangement such that a plurality of voids are defined between the members and the tube. The arrangement also permits liquid to pass through the voids and travel from the inlet of the tube to the outlet of tube. The plurality of non-reactive members and the tube transfer heat to the liquid as the liquid passes through the plurality of voids in order to vaporize the liquid. | 08-01-2013 |
20130236367 | PRODUCTION OF POLYCRYSTALLINE SILICON IN SUBSTANTIALLY CLOSED-LOOP SYSTEMS - Production of polycrystalline silicon in a substantially closed-loop process is disclosed. The processes generally include decomposition of trichlorosilane produced from metallurgical grade silicon. | 09-12-2013 |
20130256195 | SELENIUM-CONTAINING HYDROPROCESSING CATALYST, ITS USE, AND METHOD OF PREPARATION - A hydroprocessing catalyst composition that comprises a support material and a selenium component and which support material further includes at least one hydrogenation metal component. The hydroprocessing catalyst is prepared by incorporating a selenium component into a support particle and, after calcination thereof, incorporating at least one hydrogenation metal component into the selenium-containing support. The metal-incorporated, selenium-containing support is calcined to provide the hydroprocessing catalyst composition. | 10-03-2013 |
20130284585 | METHODS FOR PURIFYING HALOSILANE-CONTAINING STREAMS - Methods for purifying a halosilane-containing process stream are disclosed. In some embodiments, arsenic and phosphorous impurities are removed from halosilane-containing process streams by use of distillation. | 10-31-2013 |
20140144082 | Methods of Converting Fuel - A method for converting fuel may include reducing at least one metal oxide in a first reactor with a fuel to produce a reduced metal or a reduced metal oxide, transporting the reduced metal or reduced metal oxide from the first reactor to a second reactor, oxidizing at least a portion of the reduced metal or reduced metal oxide from the first reactor in the second reactor to produce a metal oxide intermediate, transporting the metal oxide intermediate from the second reactor to a third reactor, removing ash, char, or unwanted materials with a separation unit from the metal oxide intermediate transported from the second reactor to the third reactor, regenerating the at least one metal oxide, and transporting the regenerated metal oxide from the third reactor to the first reactor. | 05-29-2014 |
20140328740 | METHODS FOR PRODUCING SILANE - Methods and systems for producing silane that use electrolysis to regenerate reactive components therein are disclosed. The methods and systems may be substantially closed-loop with respect to halogen, an alkali or alkaline earth metal and/or hydrogen. | 11-06-2014 |