Memc Electronic Materials, Inc.

Sunedison, Inc.

Corner Star Limited

Shell Oil Comapny

Puneet Gupta

Satish Bhusarapu

Yue Huang

Henry Frank Erk

Alexis Grabbe

Zhihui Gu

Milind S Kulkarni

Timothy Dinh Truong

Roland R Vandamme

Jameel Ibrahim

Vithal Revankar

Balaji Devulapalli

Kwasi Foli

Vivek Tomar

Milind S Bhagavat

Karl Marvin Krueger

Karthik Balakrishnan

Takuto Kazama

Arif Nawaz

Noriyuki Tachi

Lee William Ferry

Larry W Shive

Baisheng Zou

Richard G Schrenker

Brian Lawrence Gilmore

Carlo Zavattari

Gianluca Pazzaglia

Sathy Ponnuswamy

Nageswara Reddy Kota

Clamping assemblies for sealing an annular chamber and reaction chamber of a reactor system are disclosed. The clamping assemblies may include actuators that are symmetrically arranged in two or more independently controllable groups of actuators.

Clamping assembly for a reactor system

A system for the production of a polycrystalline silicon product is disclosed. The system includes a reaction chamber, a susceptor, an induction unit, and a plurality of energy sources. The reaction chamber has a reactor wall, and the susceptor encircles the reactor wall. The induction heater surrounds the susceptor, and has multiple induction coils for producing heat in the susceptor. The coils are grouped into a plurality of zones. The plurality of energy sources supply electric current to the coils. Each energy source is connected with the coils of at least one zone.

Induction heater system for 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.

Production of polycrystalline silicon by the thermal decomposition of silane in a fluidized bed reactor

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.

Production of polycrystalline silicon in substantially closed-loop processes that involve disproportionation operations

Methods for separating halosilanes that involve use of a distillation column having a partition that divides the column into portions for producing three product fractions are disclosed. Methods and systems for producing silane by disproportionation of halosilanes that use such columns and methods for producing polycrystalline silicon are also disclosed.

Methods for separating halosilanes

Methods for purifying a halosilane-containing process stream include a process stream purified by removing arsenic and phosphorous impurities by use of distillation.

Methods for purifying halosilane-containing streams

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.

Selenium-containing hydroprocessing catalyst, its use, and method of preparation

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.

Methods for producing aluminum trifluoride

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.

Systems for producing silane

Production of polycrystalline silicon in a substantially closed-loop process is disclosed. The processes generally include decomposition of trichlorosilane produced from metallurgical grade silicon.

Production of polycrystalline silicon in substantially closed-loop systems

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.

Production of polycrystalline silicon by the thermal decomposition of dichlorosilane in a fluidized bed reactor

Growing community of inventors

Houston, TX, United States of America

Puneet Gupta