21st Annual Conference

Priorities, Possibilities and Pyrolysis the

Product Stewardship of Tyres

Zero Waste New Zealand Ltd.

Synopsis

• Review the problem• Current Issues• Infrastructure needed in New Zealand• Now we have a way…..• Thoughts and figures on recycling tyres in New

Zealand.

Tyre numbers

At the end of June this year:2,306,921 cars23,391 rental cars7,855 taxis427,525 trucks19,067 buses28,703 tractors…….3,383,960 vehicles not including planes and

Sedgeways all with at least 4 wheels

Mosquito breeding utopia

Tyres are important because

• on-going and relentless volume,• real and potential harm to human life• good energy products being shredded and

dumped- energy sink x2• steel and carbon black replacing imports• jobs produced in the NZ market• emerging technology to market overseas

Current Issues

• Large numbers of small importers; no clear and co-operative choke point in the cycle.

• Public are used to a $ charge as they change vehicle tyres- not aware of final destination

• Extensive problems with legacy tyres- Swanson, Naike, Napier

• City Council Costs – Auckland $4000/ month • Export to Asia- Basel Convention

Times are a changing

• Recession- jobs, imports, buffer• Peak oil• Climate change• Consumerism• Emerging sustainability

Waste Tires are Shredded

and Loaded

Air lock____________

Pyrolysis tyre heated to 400-500 degrees Celcius

____________

Air Lock

Carbon and Steel

Steel

Carbon

Steel Mill

Carbon Black

Tyregone Pyrolysis Plant

Distillation Column

Oil

Tar

Road Marking

Heavy

Light

Used as energy

products

GasUsed to fuel plant

Tyre pyrolysis plant

Resources from end-of-life tyres/tonne of tyres

Products Amount Industrial Uses

Kiln burning Energy % Electrical power and heat

Ash component

Products Amount Industrial usesShredding Shredded tyres

Rubber chip60%Rubber crumb Car mats

Steel 30% Steel millNylon

Resources from Pyrolysis per tonne/tyresProducts Amount % Industrial

Uses Comment

Pyrolysis produces

Light Fuel Oil

350 Kgs of pyrolysate

oil

65%

White spirits

35%

Tar 1% Roading component

Gas 150Kgs Powering pyrolysis plant. Electrical generation

Steel 120 Kgs Recycle to steel mill

Carbon Char

380 Kgs Steel mill Replaces imported carbon

Current destinations of end-of-life tyres - Table 1Tyre

disposal form

Destination

Environmental Considerations

% use of resources within tyre

Other considerations

Tyres unchanged in form

Export Hazardous waste-outside the country!!

Basel convention

Farms and Fenders-

Easily and often burnt in situ when no longer used

Intermediary position- still in need of end of life processing.0%

Education needed

Landfill Trap air and float up whole

0% Illegal where other recovery processes exist?

Dumped on private or crown land

Fire and mosquito breeding ground

Damages land, becomes contaminated

Should become illegal

Current destinations of end-of-life tyres - Table 2Tyre

disposal form

Destination

Environmental Considerations

% use of resources within tyre

Other considerations

Shredded Landfill Contribution to leachate

Minus. Energy expended to deliver and bury

Should become illegal where other processes exist

Horse rinks Contribution to leachate ?

Chips for drainage channels

Contribution to run off?

Contamination of the waterway?

Chips for mat manufactureKiln burning (TDF)

Furnace temperature and scrubbers

Energy %Ash component?

Pyrolysis Produces- Steel and CarbonLight Fuel OilWhite spiritsTar and Gas

TYRE RECYCLING- THE MECHANICS

Tyre Producers

VehicleImporters

Tariff CollectedviaImporter code and tariff

Monies paid out. Rate dependant on the resources extracted

Tyre energy TDEShredding Farms and FendersChips for drainage Export Pyrolysis

How could we levy the tyres produced or imported into NZ?

• Customs code for tyres and imported vehicles- easiest- levy on

numbers or tonnes of raw materials through customs directly to ZWNZ tyre recycling

• Rim size/inches- some differentiation shows in the code, is it enough? • EPU ( Equivalent passenger units )- the Australian system- identifies

24 different tyres• Need to establish what each tyre categories equivalence is in terms of

shredded or crumbed product and in terms of carbon char.

New Zealand Customs

• Already levy some 60-70 product catagories for similar purposes

• Customs require these things:– Legislation– Then they will charge a fee for entry for home consumption– Exports and refunds will have to be undertaken by the

organising authority– Advance warning to set this all up– Simple as possible eg follow import categories– Recoverable cost

Suggested pay-out differential for end-of-life tyresTyre disposal form Proposed %

payout for this destination

% of tyres to this destination potentially in 3 years

Other discussion/consideration

Tyres unchanged in form

Export 0 0 Basel convention

Farms and Fenders-

0 10 Education needed

Landfill 0 0 Illegal where other recovery processes exist?

Dumped on private or crown land

0 0 Should become illegal

Chipped or shredded

Landfill 0 10 Should become illegal where other processes exist

Tyre crumb in roads

? ? Not happening at the moment

Horse rinks 50 2Chips for drainage channels

Contamination of the waterway?

Chips for mat manufacture

50 1

Kiln burning- TDF

90 5-10

Pyrolysis 100 75

Zero Waste New Zealand LtdPO Box 33 1695

Takapuna, Auckland,New Zealand

jo@zerowaste.co.nzwww.zerowaste.co.nz

21st Annual Conference