NESHEP members visited SITA recycling plant in the Tees Valley. They were shown this presentation before taking a tour round the site.

1. Energy from Waste
Teesside
NESHEP
(North East Safety Health and
Environmental Partnership)
08/08/2012
7/08/2012

2. Agenda
• Introduction
- Phil Stevens
- Plant Manager Sita Tees Valley
• Presentation
• Site tour
- Line 3
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3. Content
• The aim of the presentation:
• To give an introduction to energy from waste
• Process
• Flue Gas Treatment
• Residues
• An overview of recent & new site development
• About 30 minutes
• Please ask questions at anytime
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4. The Process

5. What do we burn?
• Untreated Municipal Solid Waste - not a consistent fuel!
- Varies in form
• bagged or loose
• size fraction
- Moisture content
• time of season
• biodegradable waste up to 68%
- Incombustibles
• glass
• ferrous metals
• non-ferrous metals
- Varying Calorific Value
• 7.5 to 11.5 MJ / kg
-
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6. EfW
• Thermal process – energy releasing
• Main energy conversion technologies
• Combustion
• Gasification
• Digestion
• Selection needs to be based on the optimum use of the fuel /
feedstock
• Direct combustion – most efficient method of energy conversion for
waste handled on Teesside
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7. Direct Combustion
• 4 stage process
• Drying
• Vaporising
• Oxidising
• Burn out
• 4 hours
• Major components
• Furnace with grate
• water tube boiler
• Steam turbine with generator
• Proven technology
• Reliable
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8. Energy from Waste Plant
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9. EfW - Moving Grate
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10. Energy Recovery
E
F N
U E
MSW E R Electricity
250,000 Tonnes (1&2) L RESIDUES G 150,000 MWh (1&2)
136,000 Tonnes (3) Y 76000 MWh (3)
APCR IBA
(4%)
(26%) Ferrous Recovery
Non Ferrous Recovery
Aggregates
Treatment Water ~ re-use
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11. Energy Recovery
10 MJ/ kg Waste Input
100 %
Boiler 42 bar / Combustion and
-20.6% 400 Deg C radiation losses, slag
and flue gas losses
- 52.3 % Turbine Generator Condensation, generator
and radiation losses
Station Load Internal energy consumption
- 2.6% and transformer losses
=
24.5 % Electricity Energy output approx.
0.58 MWh / t waste
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12. Flue Gas Treatment

13. Waste Incineration Directive (WID)
Parameter Limit / Reference Period / Measure
Particulate matter 30 mg / m3 1/2 hour average Continuous
10 mg / m3 Daily average Continuous
Hydrogen chloride 60 mg / m3 1/2 hour average Continuous
10 mg / m3 Daily average Continuous
Carbon monoxide 100 mg / m3 1/2 hour average Continuous
50 mg / m3 Daily average Continuous
Oxide nitrogen 400 mg / m3 1/2 hour average Continuous
200 mg / m3 Daily average Continuous
Sulphur dioxide 200 mg / m3 1/2 hour average Continuous
50 mg / m3 Daily average Continuous
TOC 20 mg / m3 1/2 hour average Continuous
10 mg / m3 Daily average Continuous
Heavy metals .5 mg / m3 1/2 hour period Quarterly
Dioxin / furans .1 ng / m3 6 hours Bi-annual
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14. Abatement Process
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15. FGT Process
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16. Emission Performance
50
40
30
mg/Nm 3
20
10
SO2
0
HCl
WID
Teesside 3
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17. Residue

18. Residue Recycling (IBA)
• SITA UK / Ballast Phoenix
• Alternative to Raw Aggregate
- General Construction
- Road construction
• A process of grading & screening
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19. Architecture
Tees Valley Kirklees Isle of Man
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20. STV Lines 4 & 5
• Just starting construction of Lines 4&5
• £150 million investment (approx)
• Design 256,000 tonnes waste
• Waste from Gateshead, Sunderland & South
Tyneside
• HZI Technology – as for Line 3
• 3 Year build – April 2014
• 25 year contract
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21. STV Lines 4 and 5
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22. www.sita.co.uk
Any Questions??
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