automobile recycling where the true problem lies
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Automobile Recycling, Where the True Problem Lies. Group Leader: Leslie Savage Matthew Trout Isai Espinoza George Wahlgren Peter Manekas. Overview. Problem Statement Introduction Automobile Shredder Residue Environmental Problems Economic Problems Assumptions Proposed Solutions

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automobile recycling where the true problem lies

Automobile Recycling,Where the True Problem Lies

Group Leader: Leslie Savage

Matthew Trout

Isai Espinoza

George Wahlgren

Peter Manekas

overview
Overview
  • Problem Statement
  • Introduction
    • Automobile Shredder Residue
    • Environmental Problems
    • Economic Problems
  • Assumptions
  • Proposed Solutions
    • Legislation
    • Alternate Daily Cover
    • Filler for Composite Materials
    • Pyrolysis
  • Economic Analysis
    • Shredding Process
    • Pyrolysis Plant
problem statement
Problem Statement

The main problem facing the current automobile recycling infrastructure is the way in which automobile shredder residue is currently disposed. In order to combat this problem we researched both long and short term solutions. Main consideration was given to short term solutions in order to “buy time” for long term solutions to be implemented.

introduction
Introduction
  • 11 million vehicles enter the recycling infrastructure annually
  • 75% of each car is actually recycled through the use of Automobile shredders
  • The remaining 25% , known as Automobile Shredder Residue(ASR), is sent to landfill
automobile shredder residue
Automobile Shredder Residue
  • 500lbs. per car
  • 11 million cars per year
  • 5.5 billion lbs.. to be lanfilled per year
environmental problems
Environmental Problems
  • Volume of Landfill that ASR occupies
  • ASR contains a variety of toxic materials and heavy metals:
    • cadmium
    • lead
    • mercury
economic problems
Economic Problems
  • According to the US Council of Mayors one half of the 9300 landfills in the US face closing in the next decade
  • Disposal costs have increased by 73.5% in the past seven years
  • If classified as hazardous waste disposal costs will also rise
  • The waste of potential energy and resources associated with the disposal of ASR
assumptions
Assumptions
  • All data collected from economic surveys were honest and true
  • MARR of 10%
  • Economic study period of ten years
  • Only short term solutions were economically viable
  • Cars entering the recycling industry are between 10 and 15 years of age
proposed solutions
Proposed Solutions
  • Long term
    • Legislation
  • Short Term
    • Alternate Daily Cover
    • Filler in composite materials
    • Pyrolysis
european legislation
German Approach

“Take Back Law”

Required recycling targets:

material ‘96 ‘00

steel 100% 100%

non-ferrous 88% 90%

plastics 20% 80%

elastomers 30% 50%

glass 30% 60%

European Approach

2002 maximum 15% of older car weight can be landfilled

2002 maximum 10% of new car weight can be landfilled

2015 maximum of 5% of all car weight can be landfilled

European Legislation
alternate daily cover
Alternate Daily Cover
  • ASR is not as prone to erosion and dusting
  • Provides more stable operating surface
  • Can be delivered to the landfill at no extra cost
  • Does not reduce the quantity of ASR in the landfill
filler for composite material
Filler for Composite Material
  • Feedstock for new plastic goods
  • Variety of plastic types combined with other substances provide for low grade plastic product
  • Used as low grade construction material
  • Demand necessary to sustain market does not exist
pyrolysis
Pyrolysis
  • Pyro-high temperature
  • lysis-breaking apart atomic bonds
  • Bio-mass is heated in an air-tight structure (500 C)
  • atoms vibrate to the point of fracture
  • three primary products
    • bio-oil
    • gas
    • char
rotating cone theory
Rotating Cone Theory
  • Bio-massand hot sand are fed in
  • mixture is forced up by the rotation
  • mixture undergoes rapid heating (flash heating)
  • 79% of bio-mass becomes bio-oil, to be used as fuel
  • 10 stacked cones will throughput 200kg/hr
economic study pyrolysis plant
Economic Study :Pyrolysis Plant
  • Capital Cost=$35,000,000 MARR=10%
  • Annual Cost=$4,400,000 Period=10 years
  • Annual Feedstock Cost=$1,600,000
    • Total Annual Costs=$6,000,000
  • Annual Revenues=$14,676,225

PW=-35,000,000-6,000,000(P/A,.10,10)+14,676,225.13(P/A,.10,10)

PW=$18,311,932

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