General Atomics Electromagnetic Systems Group (GA-EMS) 13 April - - PowerPoint PPT Presentation

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General Atomics Electromagnetic Systems Group (GA-EMS) 13 April - - PowerPoint PPT Presentation

Apr 16, 2023 110 likes •269 views

General Atomics Electromagnetic Systems Group (GA-EMS) 13 April 2016 Treatment of Flame Retarded Materials Using Supercritical Water Presented to: Green Science Policy Institute Presented by: Louie Wong WARNING - This document contains

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WARNING - This document contains technical data, export of which is restricted by the International Traffic in Arms Regulations (ITAR). Disclosure to foreign persons without prior U.S. Government approval is prohibited. Violations of these export laws and regulations are subject to severe civil and criminal penalties. NOTICE PROPRIETARY INFORMATION – This document is the property of General Atomics. The information contained herein is submitted in confidence. It contains trade secrets or confidential commercial or financial information exempt from disclosure by 5 U.S.C. Section 552(B)(3) and (4) (Freedom of Information Act), and 18 U.S.C. Section 1905 (Trade Secrets Act). Except with the written consent of General Atomics (1) this document may not be copied in whole or in part and will be returned upon request or when no longer needed by recipient and (2) information contained herein may not be communicated to others and may be used by recipient only for the purpose for which it was transmitted. DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction of the document.

General Atomics Electromagnetic Systems Group (GA-EMS)

Treatment of Flame Retarded Materials Using Supercritical Water

Presented to: Green Science Policy Institute Presented by: Louie Wong 13 April 2016

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What is Supercritical Water?

500 1000 1500 2000 2500 3000 3500 4000 4500 5000 100 200 300 400 500 600

Liquid Water Steam

SUPERCRITICAL WATER

Temperature (°C) Pressure (psia)

3206 psia (221 bar)

705°F (374°C)

Typical SCWO Operating Conditions of 3200 psig, 1200°F (234 bar, 650°C)

Supercritical water is water that is heated and pressurized above its thermodynamic critical point of 374°C & 3206 psia. We operate at 650°C to ensure complete oxidation of wastes.

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SCW Properties

TEMPERATURE, °C

H2O critical temperature

PRESSURE = 250 bar (3626 psig)

100 200 300 400 500 600 25 50 50 100 0.5 1.0 Density, kg/L Gas and hydrocarbon solubility, wt% (oxygen shown) Salt solubility, wt% (NaCl shown)

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iSCWO Offers Significant Treatment Advantages

  • Efficient waste destruction at 3200psig and 6500C to 7000C
  • Can treat concentrated to very dilute liquid wastes
  • Very rapid, thorough destruction of organics; therefore, no

Pollution Abatement System (PAS) required in most cases

  • Effluents containing very low nitrogen oxide (NOX), sulfur
  • xide (SOX), and total organic carbon (TOC) content
  • Low excess air requirement
  • Destruction efficiency of TOC >99.99% (non-detect)

These attributes have been proven during numerous test programs with a wide range of feeds, including actual chemical agent, energetics, energetic hydrolysates and numerous industrial chemicals

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  • Processing equipment requires small footprint
  • Air is utilized for oxidant instead of liquid oxygen
  • Solid materials can be ground and slurried for

iSCWO processing

  • No airborne particulates generated in the gas

effluent

  • No afterburner or complex secondary processing

equipment

  • Simple control system means minimal manpower

required for treatment of hazardous materials Perfect for Onsite Waste Processing

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iSCWO Process Flow

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SCWO Provides Efficient and Effective Organic Destruction

MOST CASES NO POLLUTION ABATEMENT SYSTEM (PAS) REQUIRED

Type pe of

  • f Emis

missions ions in in Effluent luent Gas Gas Stream eam SCWO O Inher nherent ent Per erfor

  • rmance

mance (no no gas gas cleanup) leanup) Dioxins/difurans, ng/ DSCM (TEQ) < 0.006 Particulate Matter, mg/DSCM < 4 Toxic Metals, mg/ DSCM < 0.015 for Cd+Pb < 0.015 for Sb+As+Be+Cr TOC DRE, % > 99.9999 HCl, ppmv < 0.4 NOx, ppm < 1 CO, ppm < 10 Hydrocarbons, ppm < 10

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Use of SCWO/iSCWO in an Industrial Environment iSCWO is excellent for the destruction of:

  • Expired or obsolete pesticides, fertilizers, and fungicides
  • Contaminated water (waste water cleanup)
  • Expired or obsolete paints
  • Petroleum and/or petrochemical waste streams
  • Polychlorinated biphenyls (PCBs)
  • Organic cleaning solutions
  • Sewage sludge/animal waste products
  • Energetic material (explosives or propellant)
  • Unique material not suitable for normal transportation or disposal
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SCWO Influents and Effluents

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  • Tetrabromobisphenol-A (TBBPA):

C15H12Br4O2 + 16O2 = 4HBr + 15CO2 + 4H2O 4(HBr + NaOH = H2O + NaBr)

  • Hexabromocyclododecane (HBCD):

C12H18Br6 + 15O2 = 6HBr + 12CO2 + 6H2O 6(HBr + NaOH = H2O + NaBr)

  • Pentabromodiphenyl ether (pentaBDE):

C12H5Br5O + ​𝟑𝟒 𝟑𝟒/𝟑 O2 = 5HBr + 12CO2

10(HBr + NaOH = H2O + NaBr)

iSCWO Treatment of Organobromines

Organobromines can be tested at our demonstration facility to confirm reaction products in the gas/liquid effluents

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GA iSCWO Demonstration System

Dedicated iSCWO test facility can be utilized to test simulant waste streams to gather emissions and destruction efficiency data

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Modular iSCWO Systems

3 GPM iSCWO skid 3 GPM transportable iSCWO system Modular design allows for rapid setup and start of process operations

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Conclusion

  • Efficient waste processing at 650°C and 3200 psig
  • iSCWO is an excellent waste destruction process suitable

for onsite treatment of organic wastes at affordable cost

  • No PAS necessary to meet environmental regulations
  • iSCWO is fully capable of treating a wide range of

pumpable hazardous wastes including organobromine compounds (testing is recommended)

  • GA has 25 years experience with SCWO systems and

research

  • GA provides testing capability and effluent analysis
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Contact Information

Louie Wong Project Manager, Industrial Supercritical Water Oxidation Systems General Atomics Electromagnetic Systems Group 1 858 964 6870 (office) 1 619 370 6050 (cellular) Louie.Wong@ga.com John Follin Program Manager, Industrial Supercritical Water Oxidation Systems General Atomics Electromagnetic Systems Group 1 858 964 6805 John.Follin@ga.com