Upgrading of Malaysian Biomass for Cofiring with Coal. Adlansyah Abd Rahman Centre for Renewable Energy, UNITEN
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1 Upgrading of Malaysian Biomass for Cofiring with Coal Adlansyah Abd Rahman Centre for Renewable Energy, UNITEN
2 Presentation Outline 1. Introduction 2. Malaysian Biomass Resources 3. Biomass Briquetting 4. Biomass Torrefaction 5. Cofiring Research at CRE 6. Conclusions
3 Malaysia Location: 3 10' 0" N, ' 0" E (Kuala Lumpur) Land area: 126,853 mi 2 / 328,549 km 2 Population : 28,722,597
4 Malaysia s Coal Power Generation Sultan Azlan Shah Power Station TNB Janamanjung Sdn Bhd 3 x 700 MW e ( +1 x 1000 MW e )* Total installed capacity = 7680 MW e *( 9.7GW e by GW e by 2021) Sultan Salahuddin Abdul Aziz Power Station Kapar Energy Ventures Sdn Bhd 2 x 300 MW e + 2 x 500 MW e Contributes to mil tonnes CO 2 ~ 62% of power sector CO 2 (2009) Jimah Power Station Jimah Energy Ventures Sdn Bhd 2 x 700 MW e Tanjung Bin Power Station Tanjung Bin Power Sdn Bhd 3 x 700 Mw e ( +1 x 1000 MW e )* Mukah Power Station Mukah Power Generation Sdn Bhd 2 x 135 MW e Sejingkat Power Station Sejingkat Power Corporation 2 x 50 MW e PPLS Power Generation Sdn Bhd 2 x 55 MW e
5 Cofiring Experience Jimah Power Station 700 MW e opposed fired boiler 1% - 3% wt pelletised EFB for 1 week storage issues and increased slagging
6 Biomass Resources Agricultural residues Centralised Air dried Surplus? Palm Oil Mill Rice Mill Rubberwood Mill
7 Agricultural Residues 1 Palm oil mill Palm kernel shell Mesocarp fibre Empty fruit bunch Residue (2011) Amount / tonne CV / MJ/kg Energy Potential / MW th 30% η / MW e Empty fruit bunch 24,493, ,432 3,130 Mesocarp fibre 14,891, ,977 1,793 Palm kernel shell 6,074, ,660 1,098
8 Agricultural Residues 2 Rice mill Rice husk Residue (2010) Amount / tonne CV / MJ/kg Rubberwood mill Energy Potential / MW th 30% η / MW e Rice husk 560, Total palm & rice biomass potential = 6,106 MW e Rubberwood bark Rubberwood sawdust Residue Amount / tonne CV / MJ/kg Bark 24,493, Sawdust 14,891,
9 / % Biomass Briquetting Formulation No. Briquette raw materials FBX-001 EFB (100%) FBX-002 FBX-006 EFB (100%) EFB (80%) and Mesocarp Fibre (20%) Mill A Source Palm Oil Mill Mill A: Southwest Perak, with 2% residual oil in EFB Mill B: Southwest Perak, with 5% residual oil in EFB FBX-001 FBX-002 FBX-006 Fixed Carbon Ash
10 Torrefaction 1 Bench top batch torrefier Sealed vessel heated at 250 C for 60 mins Future improvements Absence of O 2 Temperature control
11 / MJ/kg Torrefaction 2 Calorific Value Mass Yield, Y m Y m M M torr raw. 100% Energy Yield, Y e Y e CV CV torr. raw Y m % 80% 60% Empty Fruit Bunch Palm Kernel Shell Raw Torrefied Mesocarp Rice husk Fibre Biomass Sample Rubberwood Bark Rubberwood Sawdust 40% 20% 0% Empty Fruit Bunch Ym Ye Palm Kernel Shell Mesocarp Fibre Rice husk Rubberwood Bark Biomass Sample Rubberwood Sawdust
12 /% Torrefaction 3 Proximate Analysis Raw Torrefied Raw Torrefied Raw Torrefied Raw Torrefied Raw Torrefied Raw Torrefied Empty Fruit Bunch Palm Kernel Shell Mesocarp Fibre Rice husk Rubberwood Bark Rubberwood Sawdust Ash Fixed Carbon Volatile Matter
13 Torrefaction of Pelletised Biomass Difficulty in binding torrefying after pelletising Biomass pelletising facility Rice Husk Empty Fruit Bunch
14 Cofiring Research at CRE Two Stage Cylcone Combustor 1 Cyclonic combustion to provide suspension firing conditions Primary reactor mimics near burner region (reducing atmosphere) Secondary reactor mimics complete combustion regions Secondary / Over fire air Primary reactor Secondary reactor Coal feed Primary inlet Flow directions Refractory lining Design of cyclone combustor Secondary inlet Primary air Region represented in primary reactor Regions represented in secondary reactor Temperature profiles of two-stage combustor against a real pulverised coal boiler Pulverised (Source : Cardiff coal University furnace 2006)
15 Cofiring Research at CRE Two Stage Cylcone Combustor 2 Two-stage combustor to simulate real boiler Temperature profiles when firing various fuel blends in the secondary reactor Computational fluid modeling used to complement actual combustion trials Slagging and fouling deposition
16 Cofiring Research at CRE CFD Simulation of Real Boiler Modeling of a tangential fired 700 MW e unit from Sultan Azlan Shah Power Station, Manjung Model of furnace Simulation of particle residence time
17 Cofiring Research at CRE Blending Calculator for Malaysian Biomass Database Comprehensive database of properties Calculates fuel feed rates from % th. Calculates slagging and fouling indices.
18 Conclusions Coal will be the major fuel source for Malaysia. Interest in cofiring exists. Agricultural residues is a good source of biomass feedstock. Biomass requires upgrading for utilisation. Torrefaction can be the solution but further research still needed. CRE active in cofiring research in Malaysia.
19 Q & A
20 Thank You! Centre for Renewable Energy Universiti Tenaga Nasional Jalan IKRAM-UNITEN Kajang Selangor, MALAYSIA Tel: Fax:
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