• SML Associates' Silicon FBR Benefits

SML Associates' Silicon FBR Benefits

Multiple technologies and processes are available for Silicon FBR deposition from any feedstock. Materials of construction can be metal for solar grade or ceramic/quartz-lined for electronic grade. SML offers separate injection of a heated diluent and silicon depositing gas and multiple stages of injection which enable diluent reuse at each stage and cuts energy consumption. Overhead product removal is available and is particularly beneficial for silane deposition where the product can go straight into the dehydrogenation step without cooling or contamination. Seed can be added periodically or generated in the reactor from in-bed grinding.

FBR FEATURES

Multistage Input
Silicon depositing gas inlets on side of RX

US PATENT

6,827,786

More throughput
Lower energy use
Top Removal
All solids exit at the top, then granular material is separated from fines and dehydrogenated in fluidized separator

US PATENT

8,703,087

Better product
Easier post processing
Return of fine seed
Superheated Diluent
Diluent heated above 350ºC

US PATENT

6,451,277

More throughput
Less energy through wall
Pulsing Flows
Beads and gas pulsed

US PATENT

6,451,277

Avoids plugging
Reduces cold spots
TCS Recovery
Quench with STC to recover TCS

US PATENT

6,368,568

Higher silicon yield
Avoid downstream problems
Metal Reactor
Ceramic Coating/Adhesion Coating/Stainless or Nickel Alloy

US PATENT

8,158,093

8,168,123

Reduces metal contamination
Reduces corrosion

Economic Benefits

  • Low electrical cost $3-5 kW/kg
  • Lower labor costs than Siemens
  • Includes downstream handling and packaging
  • Solar or Electronic Grade options
  • Metal or ceramic lined options
  • Post reactor processing options

Environmental
& Safety Benefits

  • Completely enclosed handling
  • Reduce reactor opening risks

Operational Benefits

  • Continuous operation
  • Proprietary Agitation Index to avoid agglomeration
  • High purity solids handling system (No metal contact)
  • Reliable product removal & packaging

Purity Benefits

  • Eliminate contamination from gaseous diluents
  • Packaged under high purity nitrogen
  • No surface metal contaminants from handling
SML ASSOCIATES | 109 PEPPERTREE LANE | ENCINITAS, CA 92024 | 760.942.2359 | SALES@SMLASSOCIATES.COM