Current and future treatment methods for APCR from waste ...
Transcript of Current and future treatment methods for APCR from waste ...
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Current and future treatment methods for APCR from waste incineration
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Langøya Nature
• 300 different types of flowers • 20 different bee and wasp species • 100 species of spiders • 600 different species of butterflies • 40 different species of birds • 4 foxes
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NOAH and Langøya History
• 1600 - 1800s: Lime kilns, agriculture
• 1895 – 1985: Christiania Portland Cement (later Norcem) buys the island and starts excavating limestone
• 1985: Norcem shuts down limestone activities
• 1991: Norsk Avfallshandtering AS is established by Parliament
• 1993: Norsk Avfallshandtering aquires Langøya from Norcem
• 2003: NOAH AS (formerly Norsk Avfallshandtering) is sold to Gjelsten Holding
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Our Mission • Expertise and technology to treat hazardous waste and deposit the
residuals
• Rehabilitation, to rebuild the island and complete the process of rehabilitation
• In Norway NOAH still has the role as the national treatment facility, also serving the Nordic Countries
• NOAH is continuously working towards recycling more of the waste we treat
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Limestone quarry South
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Health, Environment and Safety (HES) • Operating/emission permit from Norwegian authorities renewed 2014 for the
remaining life time
• ISO 14001 certification from February 2004
• Zero accidents since May 2004
• Absence < 2 %
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Permits and key figures • Permit from the Climate and Pollution Agency (Miljødirektoratet)
o 500 000 tonnes of inorganic hazardous waste o 500 000 tonnes of non-hazardous waste
Employees : 75 Turnover : MNOK 550 EBT : MNOK 120 Owner : Gjelsten Holding AS
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Fly ash Can be received by silo truck
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Ferry From Holmestrand to Langøya
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HUB in Horsens Denmark For transport by ship to Langøya
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Plans for new HUB in Helsingborg Operating 2017
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Wetted and dust free APCR unloading From vessel at Langøya
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Dry bulk shipment Capacity up to 1 000 MT
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And of course big bags by ship or truck
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Business areas
Industrial waste Contaminated soil Fly ash from incineration plants
Building and demolition waste
Sediments and offshore waste
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Sulphuric waste acid from pigment industry Important part in R5 definition of APCR treatment
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Neutralisation process Important part in R5 definition of APCR treatment
Sulphuric acid is neutralised by using alkaline fly ash from incinerators of solid municipal waste
• 200 000 m3/year 25 % H2SO4 • 300 000 tonnes/year fly ash
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Properties of fly ash • Fly ash contains: • 5-20 % CaO (pH 12.2-12.4) • 1-3 % heavy metals
• Leaching of heavy metals is high in alkaline environment
• pH needs to be lowered to about 10 to reduce leaching of
heavy metals
• CO2 is an excellent acid to neutralise fly ash • CO2 + CaO → CaCO3
• CaCO3 ensures an «infinite» pH buffer effect
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Heavy metals incorporates in the Fe-hydroxide phase with aging
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Heavy metals incorporates in the Fe-hydroxide phase with aging
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End use as foundation for rehabilitation of Langøya
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Remaining capacity
• Hazardous waste : 8 years – 4.0 mill MT
• Non hazardous waste : 14 years – 5.0 mill MT
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Future Langøya
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Future Langøya
Om NOAH
Fully rehabilitated in 2050
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NOAH and Norcem Cooperation for using old underground mines
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360 km mine tunnels
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20 million m3 available space
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Successful testing of NOAH production in the mine ended
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New reactor using CO2 from Heidelberg Cement
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Reaction kinetic experiments
Fly ash mixed with water
• 40-60 kg
Gas
• 18 % CO2 and 82 % Argon
• Heated to 0-20 oC prior to reaction
• Fixed bed reactor
• Dinner = 188 mm, H =1600 mm bed
• Flow
• 50 l/min
• Assuming 90 % packing → 27 cm/s
(residence time: 5 seconds)
Gas in
Gas out
CO2 sensor
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Results
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CO2 cont. flue gas: 18-19 % Gas flow: 300 Nm3/h Fly ash: 1140 kg
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Thank you for your attention!