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Comparisons

 

Westinghouse Plasma Corp. gasification technology will increase revenues, decrease operational risks and provide superior environmental performance versus other technologies. We are the only company with commercial reference facilities – three operating facilities and an additional two undergoing construction.

Comparison to Incineration

The table below details the numerous benefits of Westinghouse Plasma Corp. gasification technology versus incineration for the treatment of MSW.

 

Westinghouse Plasma Corp. Gasification Technology

Incineration

Feedstock FlexibilityAbility to mix feedstocks such as
  • MSW
  • Industrial Waste
  • Commercial & Industrial Waste
  • Hazardous Waste
  • Tires Waste
  • Biomass Fuels (such as wood waste)
MSW and other common waste streams
Fuel CreatedSyngas (Carbon Monoxide and Hydrogen)Not applicable
End Product Opportunities
  • Replacement Fuel for Natural Gas and Fuel Oil
  • Power via Steam cycle
  • Power via Combined cycle or Reciprocating Engines
  • Power via Fuel Cells (future)
  • Process Steam
  • Liquid Fuels (ethanol, bio-diesel)
  • Hydrogen
  • Fertilizer Compounds
  • Power via Rankine Cycle (Steam Cycle)
  • Process Steam
Overall Plant EfficiencyCombined Cycle Process: 1 tonne of municipal solid waste is capable of creating 1000 kWh of power via combined cycle configurationSteam Cycle Process: 1 tonne of municipal solid waste generates between 500-650 kWh of power
EmissionsCombined Cycle Process:
  • Nitrogen Oxide (NOx): <36 ppmvd
  • Sulfur Dioxide (SO2): <1.05 ppmvd
  • Mercury (Hg): <1.4 μg/dscm²
  • Nitrogen Oxide (NOx): 110-205 ppmvd
  • Sulfur Dioxide (SO2): 26-29 ppmvd
  • Mercury (Hg): 28-80 μg/dscm²
Dioxins and FuransHigh operating temperature (>1000°C) in conjunction with an oxygen starved environment destroys any dioxins/furans that may be present in the feedstock, and eliminates the potential for the creation of dioxins/furans.  Rapid syngas cooling via water quench prevents de-novo synthesis of dioxins and furans.The presence of oxygen, chlorine, and particulate creates the right conditions for the formation of dioxins and furans.
ByproductInert, non-hazardous and non-leaching glassy slag salable as an aggregate building product. Most particulate recovered during cleaning of the syngas is recyclable.Hazardous fly ash and scrubber residues plus incinerator bottom ash
 

Comparison to Other Plasma Gasification Technologies

 

Westinghouse Plasma Corp. Gasification Technology

Other Plasma Technologies

Commercial Reference PlantsThree commercial references.  Two others under construction.Most have no commercial reference plants.
Operational ExperienceGreater than ten yearsNone, except that some competitors have experience at small demonstration plants
Demonstration PlantYes, up to 24 tpdSome competitors have a demonstration plant.  Some are at lab scale.  Some do not have a demonstration plant.
Plasma Gasifier DesignSimple single vessel designMost competitors employ a multi-step design.
Plasma Torch Technology30 years experience. Developed and owned by Westinghouse Plasma Corp.Must be purchased.  No expertise in plasma torches.
ScaleUp to 1000 tpd in a single vessel.  Continuous feeding.Up to 150 tpd for some competitors.  Some competitors use batch feeding.

 

 

Comparison to Non-Plasma Gasification Technologies

 

Westinghouse Plasma Corp. Gasification Technology

Non-Plasma Gasification Technologies

Syngas QualityTar free syngas suitable for clean-up to specifications required by gas turbines, reciprocating engines, liquid fuel technologies and fuel cells.Syngas must be immediately combusted before being cleaned.
Feedstock FlexibilityAbility to mix feedstocks such as
  • MSW
  • Industrial Waste
  • Commercial & Industrial Waste
  • Hazardous Waste
  • Tires Waste
  • Biomass Fuels (such as wood waste)
Limited ability to process waste streams other than MSW.Lower temperatures limit feedstock flexibility
End Product Opportunities
  • Replacement Fuel for Natural Gas and Fuel Oil
  • Power via Steam cycle
  • Power via Combined cycle or Reciprocating Engines
  • Power via Fuel Cells (future)
  • Process Steam
  • Liquid Fuels (ethanol, bio-diesel)
  • Hydrogen
  • Fertilizer Compounds
Power via Steam cycle Process Steam
ByproductInert, non-hazardous and non-leaching glassy slag salable as an aggregate building product. Most particulate recovered during cleaning of the syngas is recyclableSimilar to incineration – hazardous fly ash and scrubber residues plus bottom ash.