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Plasma Arc (PLASCON)

Plasma Arc (PLASCON). Status & POPs application. “In-flight” plasma arc PLASCON technology operating commercially since 1992. 9 commercial plants operating: 4 commercial 150 kW PLASCON units operating in Australia.

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Plasma Arc (PLASCON)

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  1. Plasma Arc (PLASCON)

  2. Status & POPs application • “In-flight” plasma arc PLASCON technology operating commercially since 1992. 9 commercial plants operating: • 4 commercial 150 kW PLASCON units operating in Australia. • 2 units Agricultural Chemical industry, which treat the liquid waste stream from 2,4 D manufacture • 4 plants in Japan for PCB destruction • 1 plant United Kingdom for fire retardants, ODS • POPs application:Pesticides such as HCB, DDT, Aldrin, Dieldrin, Lindane, 2,4 D, PCBs, Dioxins, furans and other compounds such as halons and chemical industry in-process waste streams

  3. Cl Cl Cl Thermal Oxidation 6 NaCl Quench 5 H2O 6 NaOH 0.5 O2 Cl Cl Cl DESTRUCTION OF TYPICAL PCB WASTE DISCHARGE PRODUCTS HEXACHLORO- BIPHENYL PLASMA SPECIES FLIGHT TUBE SPECIES 12 C atoms 12 O atoms 4 H atoms 6 Cl atoms 12 CO2 12 CO 6 O2 Pyrolysis 4 HCl + Cl2

  4. 12,500 10,000 7,500 5,000 2,500 PLASCON TORCH & FLIGHT TUBE DC+ Waste Cooled Liner Argon Cathode PLASMA FLIGHT TUBE DC- Temp’ (C) Anode

  5. PLASCON Process Flow sheet

  6. PART I - Adaptation Technology – Country A. Performance: 1. Minimum pre-treatment: only treatment gaseous and liquid streams 2. Destruction Efficiency: Pesticides, PCB’s > 99.9999 % Japan: 99.999999 %

  7. PART I: Adaptation Technology - Country A. Performance: 3. Toxic by-products: --- 4. Uncontrolled releases: --- 5. Capacity to treat all POPs: yes 6. Throughput: Quantity [tons/day, l/day] Standard units: 1-3 tons /day Examples: 5% DDT in 95% solids (lime, talcum powder) Plascon can treat about 20 ton per day after desorbtion. 25 % DDT in 75% Toluene then Plascon can treat 1 ton per day.

  8. PART I: Adaptation Technology - Country A. Performance: 7. Wastes/residuals: Secondary waste stream volumes: no waste streams, 0.5 Nm3 /h (79% Ar, 18.5 % CO2, 2% CO) Off gas treatment:none after flare  Complete elimination:yes

  9. PART II: Adaption Country – Technology A. Resource needs: • Power requirement: 150 kW plasma torch (POPs) - Total 180 kW • Water requirements:Cooling torch 1.4 m3/h • Fuel volumes: no fuel • Reagents volumes:Ar 15m3/h, O20.8 t/t conc waste, 30-60% caustic soda1.4 t/t conc w • Weather tight buildings: yes but ventilated • Hazardous waste personnel requirement:--- • Sampling requirements/facilities: --- • Peer sampling: --- • Laboratory requirements: --- • Communication systems: --- • Number of (un/skilled) personnel required: ---

  10. PART II: Adaption Country – Technology B: Costs for: Operating costs US$ 2/kg pure PCB • Installation + commissioning: • Site preparation: • Energy & Telecom installation: • Compliance: • Reporting: • Run without waste: • Run with waste: • Decommissioning: • Landfilling: • Transport residues:

  11. PART II: Adaption Country – Technology C. Impact & D. Risks • Discharges to air: • Discharges to water: 1m3/h with 50 g NaCl, 5 g Na CO3 • Discharges to land: none • Risks reagents applied: very few • Risks of technology: fully automated PLC controlled • Operational risks: E-powered shut down instantaneously

  12. PART II: Adaption Country Technology E. Constructability & F. Output • Ease of installation & construction of plant : • Ease of shipping/transit: • Ease of operation: • Ease of processing: • Generated waste (% of input waste): • Deposited waste at landfill (% of input waste): • Waste quality properties (pH, TCLP)

  13. PLASCON- ODS Unit

  14. Australia plant (for Queensland Government): 200 tonnes of banned pesticides treated after a farm collection campaign.

  15. PCB Contaminated Transformers Laminations three stripped windings 3 phase Transformer out of the tank

  16. PLASCON New UK Unit

  17. On site monitoring Gaschromatographs fitted with Electro Capture Detectors (ECD) And auto samplers for liquids Gaschromatograph fitted with a Mass Spectrometer Detector

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