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

Sita Presentation

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

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Page 1: Sita Presentation

Energy from WasteTeesside

NESHEP

(North East Safety Health and Environmental Partnership) 08/08/2012Environmental Partnership)

7/08/2012

Page 2: Sita Presentation

• Introduction

- Phil Stevens

- Plant Manager Sita Tees Valley

• Presentation

Agenda

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• Site tour

- Line 3

Page 3: Sita Presentation

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

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• An overview of recent & new site development

• About 30 minutes

• Please ask questions at anytime

Page 4: Sita Presentation

The Process

Page 5: Sita Presentation

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

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• 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

-

Page 6: Sita Presentation

EfW

• Thermal process – energy releasing

• Main energy conversion technologies

• Combustion

• Gasification

• Digestion

• Selection needs to be based on the optimum use of the fuel /

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• 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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Page 7: Sita Presentation

Direct Combustion

• 4 stage process

• Drying

• Vaporising

• Oxidising

• Burn out

• 4 hours

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• Major components

• Furnace with grate

• water tube boiler

• Steam turbine with generator

• Proven technology

• Reliable

Page 8: Sita Presentation

Energy from Waste Plant

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EfW - Moving Grate

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Page 10: Sita Presentation

MSW

250,000 Tonnes (1&2)

136,000 Tonnes (3)

Electricity

150,000 MWh (1&2)

76000 MWh (3)

F

U

E

LRESIDUES

E

N

E

R

G

Y

Energy Recovery

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APCR(4%)

Treatment

Ferrous Recovery

Non Ferrous Recovery

Aggregates

IBA(26%)

Water ~ re-use

Page 11: Sita Presentation

Energy Recovery

10 MJ/ kg Waste Input100 %

Combustion and radiation losses, slag and flue gas losses

Boiler 42 bar / 400 Deg C -20.6%

Turbine Generator Condensation, generator - 52.3 %

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Turbine Generator Condensation, generator and radiation losses

- 52.3 %

Station Load Internal energy consumptionand transformer losses- 2.6%

Electricity Energy output approx. 0.58 MWh / t waste

24.5 %

=

Page 12: Sita Presentation

Flue Gas Treatment

Page 13: Sita Presentation

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

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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

Page 14: Sita Presentation

Abatement Process

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FGT Process

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Emission Performance

30

40

50

mg/Nm3

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HCl

SO20

10

20

WID

Teesside 3

mg/Nm3

Page 17: Sita Presentation

Residue

Page 18: Sita Presentation

• SITA UK / Ballast Phoenix

• Alternative to Raw Aggregate

- General Construction

- Road construction

• A process of grading & screening

Residue Recycling (IBA)

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Page 19: Sita Presentation

Tees Valley Kirklees Isle of Man

Architecture

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Page 20: Sita Presentation

• Just starting construction of Lines 4&5

• £150 million investment (approx)

• Design 256,000 tonnes waste

• Waste from Gateshead, Sunderland & South

STV Lines 4 & 5

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Tyneside

• HZI Technology – as for Line 3

• 3 Year build – April 2014

• 25 year contract

Page 21: Sita Presentation

STV Lines 4 and 5

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Any Questions??

www.sita.co.uk

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