fluid bed reactor silicon

Fluidized-bed reactor - DOW CORNING CORPORATION

Aug 11, 1999· In Figure 1, our fluidized-bed reactor comprises shell 1 having inlet 2 for feeding halogen halide or organic halide into the reactor, inlet 3 for feeding particulate silicon to said reactor, inlet 4 for feeding a fluidizing gas into the reactor and outlet 5 for removing spent silicon bed from the reactor.

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REACTOR’S THERMOPHYSICAL ... - etars-journal.org

To improve the technological features and efficiency of high-temperature processing of the dielectric materials, a reactor design with the electrothermal fluidized bed with a combined heating method was developed at the Institute of Gas of the National Academy of Sciences of Ukraine. The main purpose of this reactor is the process of applying a pyrocarbon coating to quartz sand.

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Reactor - processdesign

Aspen Plus Fluidized Bed Reactor Simulation. The fluidized bed reactor is a reactor in which the fluid from the bottom of the reactor keeps the solid catalysts suspended inside the reactor. This reactor has an advantage over traditional packed bed reactor because it has a better heat and mass transfer.

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Producing Poly-Silicon from Silane in a Fluidized Bed Reactor

Producing Poly-Silicon From Silane in a Fluidized Bed Reactor 5 Fig. 6. Fluidized bed reactor with seed generator. the bulk silicon to a speci c particle size distribution suitable for use as seed particles.

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Development of fluidized bed reactors for silicon ...

Fluidized bed reactors hold the potential to become the dominating CVD reactor for production of solar grade silicon. Large players in today's market like Renewable Energy Corporation (REC) are producing increasing amounts of their material through FBR instead of Siemens reactors.

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A STUDY OF THE DESIGN OF FLUIDIZED BED REACTORS …

A STUDY OF THE DESIGN OF FLUIDIZED BED REACTORS FOR BIOMASS GAS IFICATION UC]L I I Ajmal LatifMEng. A Thesis Submitted for the Degree of DOCTOR OF PHILOSOPHY at the University of London November 1999 Department of Chemical Engineering Torrington Place London WC 1 E 7JE

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Fluidized bed reactor - Wikipedia

A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst possibly shaped as tiny spheres) at high enough velocities to suspend the solid and cause it to behave as though it were a fluid.

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REC Silicon's fluidized bed reactor (FBR) process

REC Silicon has developed the unique Fluidized Bed Reactor (FBR) silicon refining process, a next-generation method of refining silicon. With the FBR process, we can produce solar-grade silicon at a lower cost, while using 80-90 percent less energy than the traditional Siemens method for converting silane gas to high purity silicon.

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Basic Design of a Fluidized Bed Reactor for Wastewater ...

fluidized bed reactor the hydrodynamics should be known. The Fluidized Bed reactor design should be made according to information available in the literature. The formulas for the design parameters are to be selected from vast literature available on researches in fluidized bed reactors and the study of fluidization profiles.

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Solar Grade Silicon Production In Fluidized Bed Reactor ...

In this work, we present a multi-scale modeling approach for solar grade silicon production in fluidized bed reactor (FBR) by thermal decomposition of silane. The FBR process has been commercialized by several companies and promises to deliver poly-silicon at reasonable and stable price.

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Fluidized Bed flow regimes rev1 - Rowan University

fluidized bed will be employed in your chemical reaction engineering course in which you will assume that the bubbling bed is a well-mixed reactor. This is a reasonable approximation of a fluidized bed, but there are many more complicated models that can be seen in the above figure.

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Manufacture of Granular Polysilicon from Trichlorosilane ...

on different reactor types such as a tubular reactor and fluidized bed reactor for the decomposition of a silicon-containing gas. The technology that makes polysilicon by decomposing a silicon-containing gas in a fluidized bed reactor is considered to be the most attractive alternative to …

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Fluidized-bed nitridation of fine silicon powder ...

Fig. 1 shows a schematic diagram of the fluidized-bed reactor system for the nitridation of silicon. The fluidized-bed column is made of a mullite tube of 55 mm (ID) and 1200 mm (L). The reactor was placed in a mullite furnace tube of 100 mm (ID), which was heated in an electric furnace capable of operating at temperatures up to 1500°C.

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Silicon Production in a Fluidized Bed Reactor: Final Report

Download Citation on ResearchGate | Silicon Production in a Fluidized Bed Reactor: Final Report | Part of the development effort of the JPL in-house technology involved in the Flat-Plate Solar ...

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Fluidized Bed Reactor for Production of High Purity Silicon

Methods and apparatus for the production of high purity silicon including a fluidized bed reactor with one or more protective layers deposited on an inside surface of the fluidized bed reactor. The protective layer may be resistant to corrosion by fluidizing gases and silicon-bearing gases.

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Silcon Production With A Fluidized Bed Reactor Integrated ...

feeding the vent gas stream to fluidized bed reactors configured in parallel and containing seed particles of silicon, where residence time in the fluidized bed reactors ranges from 0.5 to 2 seconds, where the vent gas stream comprises tetrachlorosilane in addition to silane or trichlorosilane, where polycrystalline silicon is produced in the one or more fluidized bed reactors, and where ...

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US8158093B2 - Fluidized bed reactor for production of high ...

Methods and apparatus for the production of high purity silicon including a fluidized bed reactor with one or more protective layers deposited on an inside surface of the fluidized bed reactor. The protective layer may be resistant to corrosion by fluidizing gases and silicon-bearing gases.

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Fluidized Bed Reactor Processes | SpringerLink

Likewise, the successful application of fluidized bed reactors to highly exothermic oxidation processes, such as those cited above for the chemical process industries, is due to the ability of the reactor to control the exothermic reactions which are taking place.

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Fluidized Bed Reactors from Parr Instrument Company ...

Fluidized Bed Reactors from Parr Instrument Company. Be the first to write a review! Description Parr Fluidized Bed Reactors are used extensively in the chemical process industries. The distinguishing feature of a fluidized bed reactor is that the solids bed or catalytic particles are supported by an up flow of gas. This reactor provides easy ...

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Fluidized bed - Wikipedia

Fluidised beds are used for several purposes, such as fluidized bed reactors (types of chemical reactors), solids separation, fluid catalytic cracking, fluidized bed combustion, heat or mass transfer or interface modification, such as applying a coating onto solid items.

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SCHWING | Fluidized bed process technique

State-of-the-art measuring and control technology of the SCHWING fluidized bed reactors ensures precise process control and reproducibility of the thermo-chemical processes where temperatures up to 1100 °C or process pressures up to 15 bar as well as the use of aggressive media are possible.

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Silane-Based Fluidized Bed Reactor (FBR) Technology ...

Sep 29, 2016· Fluid Bed Reactor (FBR) is the Most Efficient Way to Produce Polysilicon Hydrogen Heat Seed Silane Granular Product SiH 4 Si + 2H 2 Silane Deposition Hydrogen Siemens Reactor TCS Based Fluid Bed Reactor Silane Based Low energy efficiency - High cash cost High energy efficiency - Lowest cash cost Batch Process Continuous production

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US Patent for Fluidized bed reactor and method for ...

Apr 15, 2014· Granular polysilicon is produced in a fluidized-bed reactor by fluidizing silicon particles by means of a gas flow in a fluidized bed heated to a temperature of 850-1100° C., adding a silicon-containing reaction gas by means of a nozzle and depositing of silicon on the silicon particles, wherein, in at least 56% of an axially symmetric region around a nozzle opening of the nozzle, the ...

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Fluidized Bed Reactor Technology Stakes Its Claim in Solar ...

May 07, 2014· Despite challenges related to purity and efficiency, low-cost Fluidized Bed Reactor (FBR) manufacturing technology is expected to make significant gains in the market for solar polysilicon during the next few years, according to a new report from IHS Technology.

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What is channeling in fluidized bed - answers.com

Channeling occurs when a fluid flowing through a bed is not evenly dispersed throughout the bed. For instance large diameter reactors have more frequent channeling problems where liquid is prone ...

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US8168123B2 - Fluidized bed reactor for production of high ...

Methods and apparatus for the production of high purity silicon including a fluidized bed reactor with one or more protective layers deposited on an inside surface of the fluidized bed reactor. The protective layer may be resistant to corrosion by fluidizing gases and silicon-bearing gases.

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Fluidized Deposition Reactor for Silicon Production

Apr 26, 2012· Fluidized Deposition Reactor for Silicon Production 1. Fluidized Deposition Reactor for Silicon Production Paul Ege1, Alireza Abbasi1, Jin-Seok Seo2, Jun-Suk Lee2, Jung-Hyun Lee2 1- Reactech Process Development Inc, Canada 2- KCC Corporation, Republic of Korea 2.

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Silicon particle growth in a fluidized‐bed reactor - Hsu ...

This paper describes the overall operation of a 15 cm dia. fluidized‐bed reactor for silicon production via silane pyrolysis. The fluidized‐bed reactor has been characterized by its performance data and parametric effects. A withdrawal system is used to selectively remove big particles.

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Hankin Fluidized Bed Incinerator - Engineering and Process ...

Hankin Fluidized Bed Incinerator. Hankin is a leader in fluidized bed combustion of sludges generated from municipal and industrial wastewater treatment processes. The Hankin Fluidized Bed Incinerator (FBI) accepts any proportion of sludge, hazardous liquids, grease or scum.

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Effect of Bed Characters on the Direct Synthesis of ...

This paper presents the numerical investigation of the effects of the general bed characteristics such as superficial gas velocities, bed temperature, bed heights and particle size, on the direct synthesis in a 3D fluidized bed reactor. A 3D model for the gas flow, heat transfer, and mass transfer ...

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