edf r&d wp2 : energetic aspects of urban waste treatments claire lecointe, charlotte barbut 3 rd...

EDF R&D

WP2 : Energetic aspectsof urban waste treatmentsClaire Lecointe, Charlotte Barbut

3rd AWAST WorkshopJune 20-21st, 2002, Trondheim

ECO-EFFICIENCY AND INDUSTRIAL PROCESSES

PLAN

Introduction Inventory of energy data in waste

management Incineration model Biogas energy recovery model

Conclusion


Introduction

D3 : Comparable energetic data for the different channels and for the contractor countries

D4 : Energetic models

EDF R&D

Inventory of energy data


Negative points :few data about energy consumption

Transport : only available data are from the French Agency for the Environment and the Energy Control (ADEME)

Composting : only available data are from LQARS. They are low according to some general values (16,3 kWh/t compared to 20 to 100 kWh/t)

Sorting : no data


Positive points :inventory of energy production

Incineration :energy production and self-consumption reports easily available

data like temperature, pressure… only available for some models of French installations with our own software

Methanisation and landfill : energy production and self-consumption reports easily available

But information differs a lot from country to country and is not complete for all countries

EDF R&D

Incineration model


Incineration flows with the model entrieswater (H2O 1)

temperaturepressureenthalpyentropyflow

FURNACE

BOILER

Turbine andAlternator Group

airair excessdensity

wastecompositionflow

smokes 1temperaturepressurecomponents enthalpycomponents heat capacitycomponents density

smokes 2temperaturepressurecomponents enthalpycomponents heat capacity

steam 1 (H2O 2)temperaturepressureenthalpyentropy

steam 2 (H2O 3)temperaturepressureenthalpyentropy

electricity


Strasbourg incineration plant results

electricity yield = 5,1%

thermal yield = 25,0%

exergetic power (MW) yield

combustible mixture 29.2

smokes 1 19.9

smokes 2 7.5

water (H2O 1) 1.2

steam 1 (H2O 2) 10.1

steam 2 (H2O 3) 8.5

electricity production 1.48

furn

ace

bo

iler

TAG

92.5%

71.8%

68.2%exCM = LHVwaste / [1 + air (1+) VA]

exS = h - Tambiant cp ln(TS/Tambiant)

exH2O = h - Tambiant s

F = MS*exS1 / [(MW+MA)*exCM]

B = MH2O(exH2O2- exH2O1) / [MS(exS2- exS1)]

T = We / [MH2O(exH2O3- exH2O2)]

e = We / [(MW+MA)*exCM]

th = MH2O(exH2O3- exH2O1) / [(MW+MA)exCM]


Strasbourg incineration plant results

electricity yield = 5,1%

thermal yield = 25,0%

exergetic power (MW) yield

combustible mixture 29.2

smokes 1 19.9

smokes 2 7.5

water (H2O 1) 1.2

steam 1 (H2O 2) 10.1

steam 2 (H2O 3) 8.5

electricity production 1.48

furn

ace

bo

iler

TAG

92.5%

71.8%

68.2%

EDF R&D

Biogas energy recovery model


biogas production

>20% CH4

>100 m3/h

>40% CH4

>400 m3/h

heat production

electricity production

burner, furnace or boiler

biogas engine

boiler + steam turbine

<1 MWe

(~700 m3/h)

>1 MWe

(700 to 800 m3/h

with LHV = 5 kWh/Nm3)

if

if

then then

with then then

The different ways of biogas energy recovery


Energy recovery with biogas engine

exergy = thermal + physical exergy electricity production linked to mechanical energy provided

by the piston mechanical energy provided during compression,

expansion and combustion for a diesel engine study of thermal exergy similar to the incineration case

water (H2O1)

smokes 3smokes 2

electricity

smokes 1combustionspace

piston(expansion) +

alternator heatexchanger

hot water or steam(H2O2)

piston(compression)

air air

biogas


Conclusion

Delay for both deliverables Incineration model : OK Biogas energy recovery model : at the

moment the only available data for biogas engine are theoretical

Problem with biogas production model for methanisation and landfill

Participation in Orleans Case Study Greenhouse gases study


Financial statementsmost of the cost is personal cost

Personal hours on project

Contract Statement

2001 500 930

2002 850 ~ 1700

2003 1000 ?

edf r&d wp2 : energetic aspects of urban waste treatments claire lecointe, charlotte barbut 3 rd...

Documents