case study of fuel switch in the ludza boiler house
DESCRIPTION
CASE STUDY OF FUEL SWITCH IN THE LUDZA BOILER HOUSE. Edgars V ī gants director of Ludzas Bio-Enerģija Latvia Bioenergy Association Latvian District Heating Association. “ Bioenergy Promotion 2 ” The Latvian Environmental Investment Fund , October 3 , 20 12 , Riga. Content. - PowerPoint PPT PresentationTRANSCRIPT
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CASE STUDY OF FUEL SWITCH IN
THE LUDZA BOILER HOUSE
Edgars Vīgants director of Ludzas Bio-EnerģijaLatvia Bioenergy AssociationLatvian District Heating Association
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Content
Introduction Technical solutionsSecuring of BiomassOperational resultsNew experienceDdifferent biomass impact analiseConclusions
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Boiler house grouping after consumed fuel type
67%12%
6%
6%
4%4%
1% 1%
DabasgāzeŠķeldasMalkaTrīs vai vairāki kurināmā veidiKurināmā koksneKurināmā koksne un fosilais kuināmaisCiti fosilie energoresursiDūmgāzesOglesMazutsKokapstrādes atlikumiKoksnes granulasSalmiElektroenerģija
Source: LR Ministry of Economics“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Potential of Latvian energy wood
25%27%
36%38%
41%45%
24%
54%
1930
1933
1949
1961
1973
1983
2002
2008
12,6 mill. m3c
/year30 TWh/year
Forest area:
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19951996
19971998
1999200
02001
20022003
20042005
20062007
2008
2009
03.2010.
07.2010.
01.2011.
07.2011.
01.2012.05
101520253035404550556065
Natural gas (2 group)Natural gas (5 group)Wood pelletsWood chipsLPGDiesel
Period
Heat
ene
rgy
cost
s, L
s/M
Wh
*
Actual fuel price (excl. VAT):- natural gas (2 group) 0,31668 Ls/m3- natural gas (5 group) 0,27310 Ls/m3 - pellets 100 Ls/ton- wood chips 7,00 Ls/m3
- LPG 570 Ls/ton
- Diesel 635 Ls/ton
* Incl. efficiency of the modern boiler
Cost comparison of different fuels
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Location
Ludza
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Lindeks ESSENT supported by Dutch Government
Municipality of Ludza
Ludzas Bio-Energija
Heat production
14 MW
Supply of wood biomasss Biofuel
Light oil
Heat energy distribution
Heat energy> 29000 MWh/year
Investor Investor Investor
Heat end users
Co-operation partners
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Erection of new boiler house
Installation was finished in December 2000.
Supplier of boiler house equipment was Dutch company KARA Energy Systems.
Building works were performed by local company Valmieras SCO centrs.
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Technical solution
Diesel boiler7 MW
Wood boiler Transport system
Diesel oil
Flue gas filter
Heat exchangers 2x8 MW
Heat meters
Fuel tank
8 MW
Wood chips
Open storage for wood chips
7000 m3
Wood chips storage with
walking floor
Network pumps
ChimneyChimney
District heating grid
Property of Ludza municipalityProperty of LBE
LBE boiler house (Ludza)
Lindeks - wood processing (Ludza, 8 km)
Verems - plywood production (Rezekne district, 27 km)
Nomis - wood processing and forestry (Rezekne district, 45 km)
Junions - wood processing (Ludza, 2 km)
Ludzas MRS - wood processing and forestry (Ludza district, 20-40 km)
Graudi - cleaning of roadsides/under power lines (Ludza district, up to 40 km)
Lapegles 2 - forestry (Ludza district, 15 km)
Vels 2 - wood processing and forestry (Daugavpils and Kraslava district, up to 120 km)
The most of suppliers are situated in 45 km radius
Logistics of Biomass
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Securing of biomassInitially agreement on wood fuel supply was concluded between LBE and biggest local wood processing company LINDEKS
The contract term is 15 years
Payments for the biomass were made according to produced MWh of heat
Fuel moisture 40-60% on wet base
On 2005 Lindeks reduced amount of output
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Securing of biomass
Payment for delivered biomass now is made per loose cubic meter.
Fuel moisture 20-55% on wet base.
For reduction of the risk related to only one supplier, we have agreed that part of biomass is supplied by alternative suppliers – the biggest plywood producer “Latvijas Finieris” and other local companies.
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Looking a hed
Wood chips from forestryActual cost ~ 5,5 LVL /m3 loose
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Wood chips from wood-processing (ashes under 1,5 %)
Wood chips from bushes (ashes under 3 %)
Wood chips from forestry (ashes under 20 %)
Securing of biomass
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Fuel balance
Diesel oil,30 Ls/MWh (43 EUR/MWh)
2%
98%
Estimated
Operational results
Fact 200875%
25%
Wood fuel,9,50 Ls/MWh (13,57 EUR/MWh)
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Use of biomass and diesel fuel
20052006
20072008
97,6
2,4
99,2
0,8
97,4
2,6
97,6
2,40,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
80,0
90,0
100,0
%
Year
BiomassDiesel
“Bioenergy Promotion 2 ”
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Optimization of wood fuel consumption
Wood fuel consumption (loose cubic meters on 1 MWh heat energy)
1,40
1,50
1,60
1,70
1,80
1,90
2,00
2001 2002 2003 2004 2005Period
m3/
MW
h
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Positions Initial situation 2000 New situation 2001Fuel Mazut (heavy oil) Wood fuel, diesel oil
Equipment Steam boilers produced in 1967 with a total capacity 55 tons/h
New boiler equipment with a total capacity 15 MW
Efficiency 65 % 85 %Employees 18 8
Heat price 20,00 Ls/MWh - cost price(28,57 EUR/MWh)
13,67 Ls/MWh – tariff(19,53 EUR/MWh)
EmissionsCO2 13 000 t/year
SO2 220 t/year
SO2 0,5 t/year (440 x)CO2 175 t/year (74 x)EUA(2005-2007) 39000
Benefits
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Efficiency versus moisture content
72
74
76
78
80
82
84
86
88
90
30 40 50 60 70
Biomass moisture, %
Boile
r ef
ficie
cy, %
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5,00
5,50
6,00
6,50
7,00
7,50
1 3 5 10 15 20
Ash content, %
Fuel
cos
ts, L
s/lo
ose
m3
Fuel costs depending on the ash content of wood chip
“Bioenergy Promotion 2 ”
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Various types of biomass use
20052006
20072008
0 0
100,00
0 0
100,00
12
1
87,00
23
2
75,00
0
10
20
30
40
50
60
70
80
90
100
%
Year
Wood chips from forestry
Wood chips from bushes
Wood chips from wood processing
“Bioenergy Promotion 2 ”
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Utilization factor for biomass boiler
0,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
80,0
90,0
100,0
1 2 3 4 5 6 7 8 9 10 11 12
Month
Util
isat
ion
fact
or, %
2005200520072008
May 6-7, 2009, Riga
“RTU Int. Conference “Wood Fuel Standards. Combustion”
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Operation with no scheduled boiler cleaning
Position Chips from forest (ashes under 20 %)
Chips from bushes (ashes
under 3 %)
Chips from wood-processing (ashes
under 1,5 %)
General indicators
Particular indicators, Ls/MWh
Wood chips price, excl. Ls/ loose m3 5,50 6,00 7,00 - -
Wood chips amount, % 0 0 100 100 -
Wood chips amount, loose m3 0 0 43750 43750 -
Ash amount, t 0 0 167 167 -
Ash transportation expenses, Ls 0 0 3664 3664 0,116
Wood chip expenses, excl. VAT, Ls 0 0 306250 306250 9,72
Diesel fuel expenses, excl. VAT, Ls 0 0 0
Total expenses, excl. VAT, Ls 309914 9,83
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Operation with 3 scheduled boiler cleanings
Position Chips from forest (ashes under 20 %)
Chips from bushes (ashes
under 3 %)
Chips from wood-processing (ashes
under 1,5 %)
General indicators
Particular indicators,
Ls/MWh
Wood chips price, excl. Ls/ loose m3 5,50 6,00 7,00 - -
Wood chips amount, % 20 30 50 100 -
Wood chips amount, loose m3 9692 13500 21875 45067 -
Ash amount, t 492 103 83 678 -
Ash transportation expenses, Ls 10823 2261 1832 14917 0,473
Wood chip expenses, excl. VAT, Ls 53306 81000 153125 287431 9,12
Diesel fuel expenses, excl. VAT, Ls 26250 26250 0,83
Total expenses, excl. VAT, Ls 328598 10,43
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Specific cost changes depending from wood chip source
8,8
9,2
9,6
10
10,4
10,8
0 0,5 1 1,5 2 2,5 3 3,5 4 4,5
Scenario
Exp
ense
s (to
tal,
chip
s), L
s/M
Wh
0
0,3
0,6
0,9
1,2
Exp
ense
s (as
h, d
iese
l), L
s/MW
h
Total Chips Ash Diesel oil
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Comparison of heat tariffsDistrict Heating tariffs in Latvian towns 2008/2009
green - wood biomass; red - with CHP; blue - fossil fuels
63,8
5
20,00
30,00
40,00
50,00
60,00
70,00
80,00
90,00
Rujie
na
Ludz
a
Talsi
Valk
a
Mad
ona
Kuld
iga
Tuku
ms
Aluk
sne
Vent
spils
Limba
zi
Kras
lava
Valm
iera
Plav
inas
"Kom
f.", T
ukum
s
Vang
azi
Aizk
rauk
le
Ogr
e
"Rīg
as S
iltum
s"
Sigu
lda
Lielv
arde
Jeka
bpils
Cesis
Daug
avpi
ls
Sald
us
Jelg
ava
Jurm
ala
Ola
ine
Sala
spils
Liepa
ja
EUR
/ M
Wh
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The Latvian Environmental Investment Fund, October 3, 2012, Riga
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Patent for an invention
A group of authors: RTU VASSI SIA «Ludzas Bio-Enerģija» AS Komforts
“Bioenergy Promotion 2 ”
The Latvian Environmental Investment Fund, October 3, 2012, Riga
2011.gada 22., 23. februāris, RīgaEnerģētikas politika un klimata aizsardzība – Kur
atrodamies 20 gadus pēc Rio?28
Flue gas condenser
29
Assembling of condenser
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Benefits
Consumes for 10-20% less fuel
More power from boiler
Fossil fuel consumption reduces by 150 tons / year
GHG emission reductions of 500 tons / year
Reduction of hard particle emissions
Strengthening of the competitiveness
Option of installing similar condensers in other boiler houses
“Bioenergy Promotion 2 ”
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Heat production from biomass could be feasible and cost-effectiveIn Latvia amount of sustainable wood biomass is enough Cheap fuel dos’t meen cheaper energy
Conclusions
“Bioenergy Promotion 2 ”
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Ludzas Bio-EnerģijaS. Eizensteina 29, Riga LV-1079Phone: 67817090; fax: 67817087E-mail: [email protected] house: Rupniecibas 2b, Ludza LV-5701Phone: 65707182; fax: 65707181E-mail: [email protected]
Contacts
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