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Manufacture of Granular Polysilicon from Trichlorosilane .

Manufacture of Granular Polysilicon from Trichlorosilane .

A big problem in the manufacture of granular polysilicon from SiHCl 3 in a fluidized bed reactor is the deposition of silicon on the inner reactor wall. The ICFB reactor has a centrally located draft tube to form separate heating and reaction zones in the fluidized bed reactor. In this work, the interior of the draft tube was used as the

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Deposition reactors for solar grade silicon: a comparative .

Deposition reactors for solar grade silicon: a comparative .

Keywords: CVD reactors, Polysilicon, Solar Grade Silicon, Siemens process, Fluidized Bed Reactor, CFD Modelling 1. Introduction and scope In the last years production of solar cells has by far surpassed microelectronics as the main consumer of polysilicon .

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.5 1PMZTJMJDPO 1MBOU  PNNFSDJBMJ[BUJPO  PNQBSJTPO

.5 1PMZTJMJDPO 1MBOU PNNFSDJBMJ[BUJPO PNQBSJTPO

process for polysilicon plants size over 10,000 MT/YR is provided. The hybrid TCS-Siemens of current introduction is equipped with a direct chlorination FBR (Fluidized Bed Reactor), which is disclosed in the U.S. Patent Application Publication No. 20100264362 of the applicants of current invention. Three different TCS-Siemens processes of;

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Silicon Spout-Fluidized Bed - Ege, Paul Edward

Silicon Spout-Fluidized Bed - Ege, Paul Edward

Sep 11, 2008 · The reactor wall in the fluidized bed region (III) is sized and shaped to contain beads in a bubbling fluidized bed. In particular, the area of the fluidized bed region is designed with a superficial velocity adequate to maintain a slow bubbling bed so that most of the particles are well mixed while larger particles segregate towards the bottom .

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Fluid reactor - Industrial-Craft-Wiki

Fluid reactor - Industrial-Craft-Wiki

The Fluid Reactor, also known as the Pressure Vessel Reactor, is an alternative use of the existing EU reactor.Instead of directly outputting EU, it outputs Heat in the form of Hot Coolant.When set up correctly, it is more efficient than a standard EU reactor. The outer reactor .

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MATHEMATICAL MODEL OF THE FLUIDIZED BED BIOFILM .

MATHEMATICAL MODEL OF THE FLUIDIZED BED BIOFILM .

The fluidized bed biofilm reactor is a novel biological waste-water treatment process. The use of small, fluidized particles in the reactor affords growth support surface an order of magnitude greater than conventional biofilms systems, while avoiding clogging problems which would be encountered under fixed bed .

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Fluidized bed reactor - Wikipedia

Fluidized bed reactor - Wikipedia

Production of polysilicon by means of fluidized bed reactors is challenging and the field of research is therefore still interesting after over 50 years of research. Many designs have been proposed through the years but today only two main designs are utilized at an industrial scale.

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Fluidized Bed Systems - Hatch Ltd

Fluidized Bed Systems - Hatch Ltd

Fluidized bed systems have wide application as dryers, roasters, calciners, classifiers, and reactors within the metallurgical, chemical, oil and gas, and pharmaceutical industries. As high-grade feedstocks become depleted, companies want to diversify their production capabilities and minimize capital expenditures at the same time.

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Moving Bed Reactors - Chemical Engineering

Moving Bed Reactors - Chemical Engineering

Moving bed reactors are catalytic reactors in which the catalyst moves through the reactor along with the reactants. They are open systems and operate at steady state . The animation below shows the operation of a moving-bed reactor. Reactants (green) and catalyst (white) enter the top of the reactor and move through the vessel.

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MATHEMATICAL MODEL OF THE FLUIDIZED BED BIOFILM .

MATHEMATICAL MODEL OF THE FLUIDIZED BED BIOFILM .

The fluidized bed biofilm reactor is a novel biological waste-water treatment process. The use of small, fluidized particles in the reactor affords growth support surface an order of magnitude greater than conventional biofilms systems, while avoiding clogging problems which would be encountered under fixed bed operation. This

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TianREC Polysilicon Plant – Detailed Design

TianREC Polysilicon Plant – Detailed Design

TianREC is a joint venture of REC Silicon and Tian Hong, a Chinese State-Owned Enterprise. The new plant, utilizing REC Silicon's next generation fluidized bed reactor technology, is expected to have a production capacity of 18,000 metric tons of granular polysilicon, an additional 300 metric tons of Siemens polysilicon and 500 metric tons of silane gas loading.

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SCHWING | Fluidized bed process technique

SCHWING | Fluidized bed process technique

Fluidized bed process technique The many years of experience of thermal cleaning gave birth to the idea to use fluidized bed technology also to perform chemical reactions at high temperatures. Based on the scalable gas distribution plate SCHWING dimensions the systems according to the respective requirement profile.

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Deposition reactors for solar grade silicon: A comparative .

Deposition reactors for solar grade silicon: A comparative .

Request PDF | Deposition reactors for solar grade silicon: A comparative thermal analysis of a Siemens reactor and a fluidized bed reactor | Polysilicon production costs contribute approximately .

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Moving Bed Reactors - Chemical Engineering

Moving Bed Reactors - Chemical Engineering

Moving bed reactors are catalytic reactors in which the catalyst moves through the reactor along with the reactants. They are open systems and operate at steady state . The animation below shows the operation of a moving-bed reactor. Reactants (green) and catalyst (white) enter the top of the reactor and move through the vessel.

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FLUIDIZED BED REACTOR FOR PRODUCING POLYCRYSTALLINE .

FLUIDIZED BED REACTOR FOR PRODUCING POLYCRYSTALLINE .

Nov 09, 2017 · 1. 1.-9. (canceled) 10. A method for assembling a fluidized bed reactor for producing polycrystalline silicon granules, comprising the steps hereinafter in the stated sequence: a) provide a base plate and connect the base plate to gas supply lines for fluidizing gas and reaction gas and a product take-off line; b) equip the base plate with at least one fluidizing nozzle and with at least one .

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Polysilicon Equipment - Verolme

Polysilicon Equipment - Verolme

Polysilicon Equipment. Verolme ® Special Equipment is known as a specialist in the area of high pressure, high temperature and highly corrosive environments. We are a top supplier for most of the major companies in the Polysilicon sector. In the last decade we successfully delivered more than 2000 tonnes of pressure containing equipment to customers all over the world.

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Graphite materials for polysilicon production | SGL Carbon

Graphite materials for polysilicon production | SGL Carbon

An alternative production route for polysilicon is the Fluidized-Bed-Reactor (FBR). In contrast to the Siemens process this is a continuous process with the potential of huge electrical energy savings. In the FBR process fine-grain granular polysilicon is pumped into the heated reactor vessel and then kept afloat by sophisticated gas flows.

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Producing Poly-Silicon from Silane in a Fluidized Bed Reactor

Producing Poly-Silicon from Silane in a Fluidized Bed Reactor

B. Erik Ydstie and Juan Du (November 2nd 2011). Producing Poly-Silicon from Silane in a Fluidized Bed Reactor, Solar Cells - Silicon Wafer-Based Technologies, Leonid A. Kosyachenko, IntechOpen, DOI: 10.5772/23723. Available from:

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Fluidized Bed Reactors - Chemical Engineering

Fluidized Bed Reactors - Chemical Engineering

Fluidized bed reactors are commonly used in catalytic cracking processes. They are also used in the oxidation of naphthalene to phtalic anhydride, roasting of sulfide ores, coking of petroleum residues, and the calcination of limestone. They are often used when there is a need for large amounts of heat input or output, or when closely .

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Fluidized Deposition Reactor for Silicon Production

Fluidized Deposition Reactor for Silicon Production

Apr 26, 2012 · Polysilicon Fluidized Bed LiteratureØ JPL work in 1980ʼ's many referencesØ Furusawa Hom/Het kinetics (1988)Ø Lai & Dudukovics (MEMC) 1986 • Describes a multi step mechanismØ Caussat et. Al. study on FBR (1995-98) • Bubbling reactor model and exp dataØ Mlezcko et. Al. Solarworld (2004)Ø Pina et.al REC process (2006) • PF/CSTR .

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FLUIDIZED BED REACTOR FOR PRODUCING POLYCRYSTALLINE .

FLUIDIZED BED REACTOR FOR PRODUCING POLYCRYSTALLINE .

Nov 09, 2017 · 1. 1.-9. (canceled) 10. A method for assembling a fluidized bed reactor for producing polycrystalline silicon granules, comprising the steps hereinafter in the stated sequence: a) provide a .

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Fluid Bed Reactor - American Chemical Society

Fluid Bed Reactor - American Chemical Society

Today, more than 350 fluid bed reactors, including PCLA #2 and PCLA #3, are in use worldwide for the manufacture of fuels, chemical intermediates, and plastics. Acknowledgments. Adapted for the internet from "The Fluid Bed Reactor," produced by the National Historic Chemical Landmarks program of the American Chemical Society in 1998. Back .

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Development of fluidized bed reactors for silicon .

Development of fluidized bed reactors for silicon .

Manufacturing of polysilicon by chemical vapor deposition from SiHCl3 in a fluidized-bed reactor was studied. The effects of reaction temperature, H2/SiHCl3 ratio, gas velocity, and seed particle .

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Deposition reactors for solar grade silicon: a comparative .

Deposition reactors for solar grade silicon: a comparative .

Keywords: CVD reactors, Polysilicon, Solar Grade Silicon, Siemens process, Fluidized Bed Reactor, CFD Modelling 1. Introduction and scope In the last years production of solar cells has by far surpassed microelectronics as the main consumer of polysilicon in the world market [1]. Although the exponential growth in world production capacity made the

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TianREC Polysilicon Plant – Detailed Design

TianREC Polysilicon Plant – Detailed Design

TianREC is a joint venture of REC Silicon and Tian Hong, a Chinese State-Owned Enterprise. The new plant, utilizing REC Silicon's next generation fluidized bed reactor technology, is expected to have a production capacity of 18,000 metric tons of granular polysilicon, an additional 300 metric tons of Siemens polysilicon and 500 metric tons of silane gas loading.

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US4748052A - Fluid bed reactor and process - Google Patents

US4748052A - Fluid bed reactor and process - Google Patents

Undesirable conversion of a silicon source, such as silane, in the freeboard above a fluidized bed of silicon particles in a fluidized bed reactor, can be reduced by cooling the gas within the freeboard. Preferably, the reduction in temperature is achieved by introducing into the freeboard, a stream of relatively cool quench gas such as hydrogen, which also reduces the concentration of silane .

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Welcome to AE Polysilicon.com - Alternative Energy .

Welcome to AE Polysilicon.com - Alternative Energy .

AE POLYSILICON IN THE NEWS. AE Polysilicon successfully deposits silicon using advanced fluidized bed reactors; Christie, Rendell meet in Bucks County; AE Polysilicon, On Feb. 15, Broke .

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REC Silicon's fluidized bed reactor (FBR) process - REC .

REC Silicon's fluidized bed reactor (FBR) process - REC .

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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Polysilicon / TCS / monosilane | epc.com

Polysilicon / TCS / monosilane | epc.com

The silicon tetrachloride is converted with hydrogen into trichlorosilane in a conversion reactor. This process can be run homogeneously with hydrogen at approximately 1,000 °C in graphite reactors. We use the more elegant heterogeneous method of controlling the process by feeding silicon into a fluidized-bed reactor.

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Welcome to AE Polysilicon.com - Alternative Energy .

Welcome to AE Polysilicon.com - Alternative Energy .

AE POLYSILICON IN THE NEWS. AE Polysilicon successfully deposits silicon using advanced fluidized bed reactors; Christie, Rendell meet in Bucks County; AE Polysilicon, On Feb. 15, Broke Ground on its Production Facility Located Outside Philadelphia at the KIPC

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