WASTE CO-PROCESSING IN CEMENT PLANTS...7 One metric tonne of cement • 60 - 130 Kg of fuel oil (or...
Transcript of WASTE CO-PROCESSING IN CEMENT PLANTS...7 One metric tonne of cement • 60 - 130 Kg of fuel oil (or...
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WASTE CO-PROCESSING IN CEMENT PLANTS
THE EUROPEAN EXPERIENCE
Dr. Jean-Marie Chandelle
CONGRESO NACIONAL FUNDACIÓN LABORAL DEL CEMENTO Y EL MEDIO AMBIENTE
Recuperar residuos como garantía de futuro
Madrid, 30 October 2012
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OUR MEMBERS AND ASSOCIATE MEMBERS
AUSTRIA
BELGIUM
BULGARIA
CZECH REP.
DENMARK
ESTONIA
FINLAND
FRANCE
GERMANY
GREECE
HUNGARY
IRELAND
ITALY
LATVIA
FULL MEMBERS
CROATIA
SERBIA
ASSOCIATE MEMBERS
SLOVENIA
SPAIN
SWEDEN
SWITZERLAND
TURKEY
UNITED KINGDOM
LITHUANIA
LUXEMBOURG
NETHERLANDS
NORWAY
POLAND
PORTUGAL
ROMANIA
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FULL MEMBERS
AUSTRIA, BELGIUM, BULGARIA, CZECH REPUBLIC, DENMARK, ESTONIA, FINLAND, FRANCE, GERMANY, GREECE, HUNGARY, IRELAND, ITALY, LATVIA, LITHUANIA, LUXEMBOURG, NETHERLANDS, NORWAY, POLAND, PORTUGAL, ROMANIA, SLOVENIA, SPAIN, SWEDEN, SWITZERLAND, TURKEY, UNITED KINGDOM
ASSOCIATE MEMBERSCROATIA, SERBIA
N
PL
CH
SFIN
UK
IRL
EP I
F
BL
NLD
GR TR
ACZ
ROH
EST
DK
LV
SIHR
BG
LT
RS
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WORLD CEMENT PRODUCTION - 2011
3.6 Billion tonnes
CEMBUREAU7.3%
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WORLD CEMENT PRODUCTION - 2011
* Including EU27 countries not members of CEMBUREAU
by region and main countries
3.6 Billion tonnes
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CEMENT MANUFACTURING – MAIN PHASES
1) Preparation of raw materials into raw meal (Extraction – Crushing –Pre-homogenisation - Dosing – Grinding – Homogenisation)
2) Clinker production – pyro-processing of raw materials (calcination of the raw meal into the rotary kiln – energy supplied by burning fuels)
3) Cement production - grinding of clinker and mineral components to obtain cement
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One metric tonne of cement• 60 - 130 Kg of fuel oil (or equivalent fuelling amount)
• The world has only limited amount of fossil based fuels
• Sustainable development: “To meet the needs of the present without compromising the ability of the future generation to meet their own needs”
• Take measures in order to save “some” resources for the future generation
AN ENERGY INTENSIVE INDUSTRY
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REDUCTION OF SPECIFIC ENERGY
Fuel
Ene
rgy
in k
J/kg
clin
ker
Development of the
specific fuel energy
consumption in
CEMBUREAU
countries since 1960
Sou
rce:
CE
MB
UR
EA
U E
L D
ecem
ber 0
7
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REDUCTION OF SPECIFIC ENERGY
Technological Innovation-JMC 1
Sintering process: improvement of energy efficiency
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005Year
theoretical fuel energy requirement
drying of raw material0
1000
2000
3000
4000
5000
6000
7000
8000
9000
kJ/k
g cl
inke
r
Remaining potential for specific energy
consumption reduction through technological
innovation and process improvement
⇓LESS THAN 2%!
⇒Alternative fuels!⇐
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CEMBUREAU - "Getting the Numbers Right"
Year:Region:
Company:
2009EU 27All GNR participants
Thermal energy per tonne clinker
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
% clinker production
MJ/
t
2009 2005 2000 1990
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STEAM COAL & PETCOKE PRICES – C&FJanuary 2003 - Beginning October 2012
©C
imeu
rope
EL-
Oct
ober
201
2
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STEAM COAL & PETCOKE PRICES – FOBJanuary 2003 - Beginning October 2012
©C
imeu
rope
EL-
Oct
ober
201
2
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CEMBUREAU - "Getting the Numbers Right"
Year:Region:
Company:
2009EU 27All GNR participants
Percent thermal energy from conventional fuel
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
% clinker production
%
2009 2005 2000 1990
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CEMBUREAU - "Getting the Numbers Right"
Year:Region:
Company:
2009EU 27All GNR participants
Percent thermal energy from fossil waste
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
% clinker production
%
2009 2005 2000 1990
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CEMBUREAU - "Getting the Numbers Right"
Year:Region:
Company:
2009EU 27All GNR participants
Percent thermal energy from biomass
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
% clinker production
%
2009 2005 2000 1990
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• as alternative raw materials
• as mineral components
Homogeneous waste can be effectively recovered energetically and/or materially by co-processing in the cement - making process
COULD WASTE BE THE SOLUTION ?
• as alternative fuels (co-processing of waste)
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ALTERNATIVE FUELS
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ALTERNATIVE FUELS
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BIOMASS FUELS
Total Dried sewage sludge (%) 14.80%Wood, non impregnated saw dust (%) 6.30%Paper, carton (%) 3.50%Animal meal (%) 54.60%Animal bone meal (%) 5.30%Animal fat (%) 0.70%Agricultural, organic, diaper waste, charcoal (%) 1.90%Other biomass (%) 13.00%
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EXAMPLES OF WASTE CO-PROCESSED IN CEMENT PLANTS
Alternative Fuels• waste oil, waste wood• sewage sludge• waste tyres • plastics• animal meal• solvents• impregnated saw dust
Clinker Substitute (Mineral Components)
• fly ash (power generation)• artificial gypsum (flue gas cleaning)• ground slag (steel industry)
Alternative Raw materials• foundry sands• contaminated soil• waste from road cleaning• iron-, aluminium-, silica- containing wastes
Auxiliary Materials• water containing ammonium (for de-NOx) • water containing solvents• water from photo chemical process
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• 4 million tonnes of coal saved every year
• Lower global CO2 emissions
BENEFIT TO THE ENVIRONMENT
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THE USE OF WASTE & BIOMASS INSTEAD OF FOSSIL FUEL IN THE CEMENT INDUSTRY REDUCED EUROPEAN ABSOLUTE EMISSIONS BY
15.6 MT/YEAR
11.3 Mt CO2
127.2 Mt CO2122.9 Mt
CO2Emissions
Waste Incinerator
Cement plant+ Cement plant
Waste incineration & cement manufacturing
Waste used as fuel in cement manufacturing
Waste Fossil Fuels Waste Fossil FuelsResources
Rest Waste& Energy
Cement CementProducts
138.5 Mt CO2
2010
figures
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THE USE OF SOLID WASTE IN A CEMENT PLANT (B) PREVENTS METHANE EMISSIONS IN A LANDFILL (A), GWP=21 CO2EQ.
Landfill without flare + Cement plant Cement plant
Fossil fuel Foss. fuelWaste
CO2Methane
GWP 21 CO2eq
Waste
CO2
b)
CO2CO2
Resourcescarbon content
Cement CementProductsLandfill & Leachate
Emissions
Waste landfilling & cement manufacturing
Waste used as fuel in cement manufacturing
a)
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VOLUMES OF FOSSIL WASTE AND BIOMASS USED BY THE GLOBAL CEMENT INDUSTRY (CSI + CEMBUREAU) GREW MORE THAN 5 TIMES
IN 19 YEARS TIME
• In 2009 the cement industry recovered 16.3 million tonnes of waste• The use of fossil waste grew fast between 1990 and 2000, whereas biomass grew fast
since 2000
Dat
a fro
m th
e C
SI “
Get
ting
the
Num
bers
Rig
ht”s
yste
m
The data in the graphs originate
from the CSI “Getting the
Numbers Right” project, which
covers ~100 % of Europe, 80%
of North America, 65 % Latin
America and 55% India, but less
than 40 % for other regions.
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THE EUROPEAN CEMENT INDUSTRY RECOVERS THE LARGEST VOLUMES OF WASTE AND BIOMASS
• Europe accounts for 61 % of fossil waste and 46 % biomass recovered in the global cement industry (however, GNR covers 100 % of Europe, 80 % of NA and < 50 % non-Annex 1)
• Very important growth of biomass use in Europe from 2000 to 2005, is probably animal meal and – fat, which is a temporary source
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ALTERNATIVE FUELS: CO2 EMISSIONS AVOIDED
YEAR SUBSTITUTION RATE
CO2 EMISSIONS AVOIDED BY FOSSIL FUELS
1990 3% 1.6 Mt2005 15% 9.3Mt
2010 31% 15.6 Mt
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• No capital cost
• Lower operating costs
• A safe -strictly regulated- solution
BENEFITS TO LOCAL COMMUNITIES
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• Long term viability – in an era with fewer and fewer fossil natural resources
• From “Polluter image” to “Supplier of safe waste solution”
BENEFIT TO THE CEMENT INDUSTRY
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• Formerly Incineration of Waste Directive (2000/76/EC)
transposed into national laws by 28 December 2002
STRICT REGULATION AT EU LEVEL
• IPPC & IWD now recast together in Industrial Emissions Directive (2010/75/EC)
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INDUSTRIAL EMISSIONS DIRECTIVE
The Directive covers:
• Cement plants burning waste
• Hazardous waste and non-hazardous waste
• Waste oil, but the specific requirements for hazardous waste do not apply to waste oil (up for revision)
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• Application and permits– Types and amounts of waste
• Delivery and reception of waste– Control
• Operating conditions– Gas temperature > 850 °C/1100 °C, 2 sec
• Access to information– Applications for permits, annual reports
The Directive prescribes obligations on:
INDUSTRIAL EMISSIONS DIRECTIVE
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The following emission limit values are provided for cement plants burning non-hazardous waste or less than 40% hazardous waste:
EMISSION LIMIT VALUES
Total dust 30Hydrogen Chloride (HCl) 10Hydrogen Fluoride (HF) 1NOx for existing plants 800NOx for new plants 500Cadmium (Cd) & Thallium (TI) 0.05Mercury (Hg) 0.05Antimony (Sb), arsenic (As), lead (Pb), 0.5Chromium (Cr), cobalt (Co), copper (Cu), manganese (Mn), nickel (Ni), vanadium (V)Dioxins and furans 0.1Sulphur dioxide (SO2) 5Total Organic Carbon (TOC) 10
0
Limit values expressed as a daily average, 10% O2, dry, mg/m3 (dioxins ng/m3)
Exceptions may be
authorised by the
competent authority in case where TOC and
SO2 do not result from
the incineration
of waste
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WASTE FOR RECOVERY V. DISPOSALEU case law E.C.JWaste Framework Directive (2008/98/EC)
→ co-processing of waste in cement plants = recovery (≠ disposal)
because• The combustible parts of the waste replace fossils fuels;• The non-combustible parts of the waste replace raw materials;• The energy efficiency in cement kilns is high;• The environmental impact is low:
emission to air (strictly regulated) – kiln - preheater system - “neutraliser” of the acid gases– high temperatures assures complete combustion
there are no releases to soil (no ash and slag) or to water
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REMAINING BARRIERS
• At national level: EU Member States should take waste management seriously
No incentives for collection and sorting of waste
No implementation of Waste Action Plans
No action versus illegal landfilling
No reduction of landfilling
• Transport cost
The key problem is a supply problem
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NEW BARRIERS AT EU LEVEL
• EU Biomass Action Plan (Dec. 2006):Biomass ⇒ electricity and transport
• EU target 20% of renewables by 2020 (8-9 March 2007) ⇒ use of biomass fundamentally redirected
• EC Communication “Innovating for Sustainable Growth: A Bioeconomy for Europe” – 13 February 2012 boost for bioeconomy – use of renewable biological resources as fuels and raw materials
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END OF WASTE• Lifting the Waste Status possible under EU Waste
Framework Directive (2008/98/EC)
• Benefits:EOW reduces the total volumes of waste in Member StatesCreates a market for ex waste products
• Risks:By passing strict waste legislationProducts more expensive than waste
• CEMBUREAU recognises that lifting the waste statuscould help some specific material recovery operations and may be justified for a limited selection of waste streamsbut insists that this is to be achieved only under strict conditions
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EOW: CEMBUREAU CONDITIONS• Only non-hazardous, specifically defined waste streams should be considered for
lifting of the waste status;• The waste status must not be lifted for mixed waste;• After treatment, the product must be free of contaminants, must not possess any
environmental hazard and must fulfil all relevant limits to ensure an environmental sound further utilisation;
• The lifting of the waste status must only be considered once all recovery operations have been completed;
• The recovery operation to prepare for end-of-waste must take place in an installation having all necessary permits, especially a waste permit;
• The no-longer waste material should comply with all REACH applicable requirements, e.g. registration; and
• When the no-longer waste is processed outside the scope of waste legislation, it should be ensured that there are no adverse impacts for human health or the environment due to the absence of constraints as e.g. the emission limits from the IPPC Directive (Industrial Emissions Directive)
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WASTE CO-PROCESSING IN
CEMENT KILNS IS A SOUND
WASTE MANAGEMENT POLICY
THE OBVIOUS CONCLUSION:
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www.cembureau.eu