Modern trends of electron accelerators application for ... · Modern trends of electron...
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Part-financed by the European Union (European Regional Development Fund
Modern trends of electron accelerators application for flue gas treatment
Andrzej Pawelec
Institute of Nuclear Chemistry and Technology, Warsaw, Poland
Warsaw, 14.01.2013
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Basis of electron beam flue gas
treatment technology
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Some history
• Early phase (Japan, 1970s)
• Pilot plants phase (Japan, USA, Germany, Poland 1980s,
1990s)
• Industrial plants phase (China, Poland, late 90s)
• Recent attempts (China, Bulgaria, Middle East)
Present operating plant:
• EBFGT at Pomorzany Power Station, Poland
• New facilities under construction
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Conventional flue gas treatment process vs. Electron Beam Flue Gas Treatment
Limestone-Gypsum Process (SO2 removal)
Ammonia Selective Catalytic Reduction Process (NOx removal)
Electron Beam Flue Gas
Treatment Process
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Electron beam flue gas treatment
Plasma generation by
electron beam irradiation
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Pollutants removed by EB method
The method has been designed for simultaneous removal of:
• SO2
• NOx
Also there proceeds removal of other pollutants as:
• HCl, HF etc.
• Volatile Organic Hydrocarbons (VOC)
• Dioxins
• Others…
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Advantages of EBFGT technology
• Simultaneous removal of SO2 and NOx,
multi-pollution control system
• High removal efficiency
• High flexibility of installation
• Dry process
• Wasteless process, usable by-product
• Simple facility construction
• Easy retrofitting
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● Energy and heat generation
● Oil refineries
● Waste incinerators (municipal and medical)
● Cement and concrete production
● Metal production (ore sintering)
● And others.
Potential processes suitable for application of
electron beam flue gas treatment technology
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Industrial demonstrational flue gas treatment plant
EPS Pomorzany, Poland
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EPS Pomorzany – general view
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The facility
Main operational data
• Flue gas flow rate 100 000 - 270 000 Nm3/h
• Pollutants removal efficiency:
95 % SO2
70 % NOx
• Total accelerators power: 1.04 MW
• Inlet flue gas parameters:
temperature 130 – 150°C
SO2 concentration 1500 – 2200 mg/Nm3
NOx concentration 400 – 600 mg/Nm3
• Ammonia water consumption: 150 – 300 kg/h
• By-product yield: 200 – 300 kg/h
Scheme of the facility
Cooling tower
The reactor
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Plant operation results
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Ammonia stoichiometry [%]
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The results of industrial plant operation proved the
applicability of the technology to treatment of
industrial flue gases
By-product composition:
(NH4)2SO4 45-60%
NH4NO3 22 - 30%
NH4Cl 10 - 20%
moisture 0,4 - 1%
water insoluble parts 0,5 - 2%
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Modern trends of electron beam flue
gas tretment technology
development
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• Accelerators improvement
• Adjustment for various pollutants
– multipollutant control
• Adjustment for various
technological processes
• Costs lowering
• New implementations
EBFGT development
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Application for new pollutants
removal
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VOC removal
naphtalene acenaphtene anthracene fluoranthene
pyrene benzo(a)pyrene
dibenzo(a,h) anthracene
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VOC removal efficiency
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Mercury removal
Hgooxidation
Hg2+removal
Mercury oxidation proceeds in reaction chamber
At medium energy levels, approximately 98% of
gaseous mercury vapor was readily oxidized.
Expreriments were performed for following parameters:
Hg concentration in gas about 16 µg/m3
applied doses of E-beam 2.5 – 10 kGy
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Dioxin removal
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Process improvement
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NOx removal in the presence of TiO2 catalyst
Process mechanism:
TiO2 + electron beam → e− + hole+
h+ + TiO2- H2O → OH• + H+
e− + TiO2-O2 → O2−
TiO2 + NO → TiO2-NO
TiO2-NO + OH• → TiO2-HNO2
TiO2-HNO2 + OH• → TiO2-NO2 + H2O
TiO2-NO2 + OH• → HNO3(aq)
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Reaction chamber construction improvement
Typical dose distribution
in the reactor
Considered reactor
construction
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Reaction chamber construction improvement
Gas velocity profiles in
the reactors
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Reaction chamber construction improvement
The results of calculation
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New possibilities of process
application
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Other fuels application – fuel oils
Oil type SO2 NOx
Arab Medium 97.2 % 91.1 %
Arab Heavy 99.9 % 90.4 %
Fuel Oil 99.5 % 87.7 %
Removal efficiencies obtained
during laboratory research
Laboratory intalation at
INCT, Warsaw
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Previous works results
Dose effect on SO2 and NOx
removal
Other fuels application – results of research
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Pilot plant research
General view of the pilot plant at one of Saudi
ARAMCO refineries.
1. stack of F 1001 boiler, 2. boiler F 1001, 3. flue gas
duct, 4. control room of pilot plant, 5. humidification
unit, 6. stack of pilot plant, 7. cartridge bag filter, 8.
thermal insulated duct, 9. cyclone, 10. ammonia
dosing unit, 11. EB-Tech mobile unit.
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Design data:
• Volumetric flow rate (wet basis) 2,000 Nm3/h
• Temperature 300°C
• Pressure atmospheric
• Composition (wet basis): N2 - 71.62% vol.
CO2 - 11.24% vol.
O2 - 3.14% vol.
H2O - 13.83% vol.
• Pollutants concentration: SO2 - 1503 ppmv
NOx - 233 ppmv
Dust - 170 mg/Nm3
Assumed removal rates:
SO2 95%
NOx 70%
Dust 98%
Pilot plant research
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Contents of heavy metals (mg/kg) in the byproduct and limits for heavy metals content in the
NPK fertilizer established in some countries
As Cd Cr Co Pb Hg Ni Zn Remarks
<0.02 <0.01 0.43 0.03 1.01 <0.03 63.5 18.3 averaged values for byproducts collected by cartridge bag filter
0.24 0.09 1.61 0.03 0.54 1.41 22.80 1476 byproducts collected by ESP
Limits for heavy metals content in NPK fertilizer
41 39 300 17 420 2800 US EPA CFR40 Part. 503
75 20 150 500 5 180 1350 Canadian Fertilizer Act (1996)
50 50 140 2 Polish standard
32.2 276.8 12.9 17.8 72.3 mean values of heavy metals concentrations in fertilizers marketed
in the Kingdom of Saudi Arabia
Pilot plant research
The byproduct
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Studies on application of EBFGT
technology for marine Diesel engines
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Studies on application of EBFGT
technology for marine Diesel engines
Pollutants' concentrations at the inlet and outlet of the EBFGT installation
Pollutant Inlet Outlet Removal rate
SO2 1525 mg/Nm3 (2.7% S) 56 mg/Nm3 (0.1% S) 96 %
NOx 2816 mg/Nm3 520 mg/Nm3 81 %
The conceptual scheme of EBFGT
installation for marine applications
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Application of EBFGT technology for
municipal waste incineration
Exprimental installation in
Takahama Clean Center
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New possibilities of process
implementation
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TPS Sviloza, Bulgaria
Plant location
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EBFGT facility in TPS Sviloza, Bulgaria
(design phase)
Plant
visualization
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Design parameters:
ParameterValue
Volumetric flow rate
(Nm3/h, wet base, real oxygen concentration) 608,000 Nm3/h (max)
488,000 Nm3/h (nominal)
Inlet flue gas parameters
Temperature
Flue gas composition:
140°C
N2 75.75%
O2 9.95%
CO2 8.3%
H2O 6.0%
Inlet pollutants concentrations (6% O2, dry gas)
SO2
NOx
Dust
3800 mg/Nm3 (1330 ppmv)
1400 mg/Nm3 (682 ppmv)
400 mg/Nm3
Emission limits for TPS Sviloza
(according to directive 2001/80/EC,
6% O2, dry gas):
SO2 1080 mg/Nm3
NOx 600 mg/Nm3
Dust 100 mg/Nm3
Required removal rates:
SO2 72%
NOx 57%
TPS Sviloza, Bulgaria
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TPS Sviloza, Bulgaria
Conceptual scheme of EBFGT plant in TPS Sviloza
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EBFGT technology application for liquid fuels –possible implementation
Main design parameters:
Volumetric flow rate 160 000 Nm3/h
Pollutants concentrations (wet base)
SO2 - 1900 ppmv
NOx - 240 ppmv
Dust - 170 mg/Nm3
Required removal rates:
SO2 90 %
NOx 50 %
Location: one of refineries in Saudi Arabia
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EBFGT technology application for liquid fuels –possible implementation
Conceptual scheme of 160 000 Nm3/h capacity demonstration plant
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EBFGT technology upscalling
ELV 12 accelerator, EB-Tech, Republic of Korea
• A 1 000 000 Nm3/h
capacity unit is
concerned
• High power accelerators
are developed
• Costs lowering is
obtained
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Thank You for Your Attention
Andrzej Pawelec Ph.D.
Institute of Nuclear Chemistry
and Technology
Dorodna 16
03-195 Warsaw, POLAND
e-mail: [email protected]
My visit card: