Converting Waste Agricultural Biomass into a Resource - UNEP

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Disadvantages to Developing Countries 1. Deterioration of some equipment due to old age. This requires frequent replacement of some spare parts which means more expenditure in forex for the spares whose raw materials like stainless steel, are not locally available. 2. There is a shortage of forex to service high technology and very sophisticated equipment. This means there is a need to shop around for technological levels that are manageable within the region. 3. Non-availability of credit facilities in the country makes it difficult to set up more cogeneration systems. Examples of Real Life Applications Kilombero Sugar Company Morogoro, Tanzania Mtibwa Sugar Estate Morogoro, Tanzania Bagasse Tanganyika Planting Company Kilimanjaro, Tanzania Bagasse Kagera Sugar Company Kagera, Tanzania Bagasse Sao Hill Saw Mill , Iringa, Tanzania 70
Sugar Mill Bagasse Boilers 24 Uganda, Commercial Crop Residue Process Equipment Main Product Sugarcane Bagasse Combustion Bagasse Boiler Heat for sugar mill boilers Production Capacity Bagasse (moisture content of 50-55% water, and this is also the moisture content of the cane when it is fed into the boiler. None of the sugar factories in Uganda predry the bagasse before it enters the boiler. The ash content varies from 2.5-6%, and the season of the year and techniques of harvesting are determining the ash content. If the harvesting is done in terms of mechanical loading, the ash content increases, and this is also happening in wet weather because more mud etc. is following the canes into the process (Polzin, 2004). Currently (2004) there are four boilers installed at Kakira Sugar Works. They have the following technical specifications: • Boiler 1: 24 tons of steam per hour • Boiler 2: 22 tons of steam per hour • Boiler 3: 22 tons of steam per hour • Boiler 4: 24 tons of steam per hour The boilers are all operating at 20 bar pressure, and a combustion temperature at 300 ºC. A fifth boiler will be ready July 1th 2004, and it will be operated at 30 t MCR. There are two turbines at Kakira: • Turbo Alternator 1: 3 MW and 18 bar pressure. The water rate is at 11 kg/kW • Turbo Alternatio 2: 1.5 MW and 18 bar pressure. The water rate: 13 kg/kW The boilers at Kinyara have the following specifications: • Boiler number 1: 35 tons of steam per hour at 2350 kPa and 350 ºC • Boiler number 2: 35 tons of steam per hour at 2350 kPa and 350 ºC. There are two turbines installed at Kinyara, and they have the following specifications. They both have 1 MW steam driven back pressure Allen turbines. The pressure is 2350 24 Lars Petter Bingh, NTHU, Opportunities for Utilizing Waste Biomass for Energy in Uganda, 2004 71
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Con v e r t i n g Wa s t e Agr i c
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Converting Waste Agricultural Bioma
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setting and identification of stake
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ACRONYMS CO2 CV DAP DTIE ESTs E-Was
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2. Rationale One of the critical ac
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3. Scope and Limitations In compili
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4. The Compendium The Project Websi
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• Basic technology information 9
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Table 1: Cellulosic Waste Biomass C
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Molding Oil Palm fruit residues Sug
Page 21 and 22: 6. Recommendations The specific rec
Page 23 and 24: 2-Drum Top Supported Boiler 12 USA,
Page 25 and 26: HYBRID PF 14 USA, Commercial Crop R
Page 27 and 28: operation of each to match the stea
Page 29 and 30: HYBRID RG 15 USA, Commercial Crop R
Page 31 and 32: All above work in concert to reduce
Page 33 and 34: HYBRID UF 16 USA, Commercial Crop R
Page 35 and 36: operation of each to match the stea
Page 37 and 38: TRI 17 USA, Commercial Crop Residue
Page 39 and 40: 2-Drum Bottom Supported Boiler 18 U
Page 41 and 42: power boilers. Examples of Real Lif
Page 43 and 44: A fully automated continuous system
Page 45 and 46: Detailed Process Description A. Met
Page 47 and 48: Examples of Real Life Applications
Page 49 and 50: Detailed Process Description A. Met
Page 53 and 54: 1. The Fibrowatt operation starts o
Page 55 and 56: HYBRID CG 21 USA, Commercial Crop R
Page 57 and 58: utilizing the most reliable system
Page 59 and 60: BTG Flash Pyrolysis Netherlands, Co
Page 61 and 62: Before processing organic materials
Page 63 and 64: a. Reactor : This was a downdraft,
Page 68 and 69: Price of Machine The total investme
Page 70 and 71: Main Products: The plant provides i
Page 74 and 75: Detailed Process Description Kakira
Page 76 and 77: Example of Real Life Applications C
Page 78 and 79: Aqueous Phase Reforming (APR) 27 US
Page 80 and 81: Shelled Corn as Fuel 29 USA, Commer
Page 82 and 83: Amaizablaze/Nesco, Inc. P. O. Box 3
Page 84 and 85: HS-Tarm 5 Main Street, P.O. Box 285
Page 86 and 87: Lock Haven, PA 17745 800-582-4317 h
Page 88 and 89: P.O. Box 2075, Mankato, MN 56002 80
Page 90 and 91: The result is wood (biomass) can be
Page 92 and 93: Biomass Heating System 35 UK, Comme
Page 94 and 95: Supplier R.D. Associates, Ltd. Fuel
Page 96 and 97: Figure 5: KSM Drop Cell Unit Some o
Page 98 and 99: There is a tendency for fly ash to
Page 100 and 101: AgriPower 36 USA, Commercial Crop R
Page 102 and 103: BioMax 25 37 USA, Commercial Crop R
Page 104 and 105: 102
Page 106 and 107: Solar-Biomass Hybrid Cabinet Dryer
Page 108 and 109: Two doors were designed for easy lo
Page 110 and 111: Asbestos gaskets are used while con
Page 112 and 113: The ash scraper slides through a cy
Page 114 and 115: flange attached at its bottom; this
Page 116 and 117: Other fuels such as saw dust brique
Page 118 and 119: The completed hybrid solar-biomass
Page 120 and 121: Greenfire 41 USA, Commercial Crop R
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Mayon Turbo Stove and Lo Trau Stove
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Social Considerations The stove was
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Commercial Gasifier 49 Philippines,
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The Modul-Pak ® boiler is a hybrid
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Suppliers Energy Quest, Inc. 850 So
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as well as the extraction, recovery
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oil production period in the mills.
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weatherproof and sound-attenuating
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Primenergy R-18 Gasifier producing
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Low-cost 500 kW thermal rice hull c
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Kansai Carbonized Rice Husk Gasifie
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Colusa Rice Straw / Hulls Technolog
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The customized harvester collects t
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Rice Husk Gasifier Philippines, Com
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2.5 MW Cogeneration Plant 65 Thaila
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San San Rice Husk Stove Myanmar, Co
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The technology of rice husk gasifie
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of trees can be controlled. This wo
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includes an automatic feeder, which
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Maligaya Rice Hull Stove 74 Philipp
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Parameters for Procurement Specific
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162
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a 100KW capacity Rice-Husk based Ga
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Rice husk briquette fuel 84 Banglad
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aised to US$ 6.84 million from the
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ease of removal of the char, a grat
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The rice husk gas burner for bakery
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Engineering and Environmental Manag
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Depending on the type of fuel it ha
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mode, all of the steam directed to
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pyrolysis) with air or oxygen at te
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R S for in-kind repair of boilers a
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Wood Biomass Electricity Generator
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Advantages to Developing Countries
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Celunol's "wet" biomass conversion
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up to 1.3 million liters of cellulo
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This process is done in shredder ma
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The minimal price established is $C
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196
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Telephone (303) 933-3135 FAX (303)
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Solar-Biomass Hybrid Cabinet Dryer
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The stove uses cylindrical honeycom
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Research Centre for Applied Science
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air. Woody biomass available in ple
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Dry Grind Ethanol 99 USA, Under Con
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Price Ethanol sells as a commodity
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1 Figure 1. Design of the dryer Det
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footings made of brick and mortar.
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placed inside mild steel shell of l
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Biological Hydrogen Production from
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ioprocess for hydrogen production f
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a. Reactor: This was a downdraft, t
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Transpired Collector Solar-Biomass
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Drying chamber The drying chamber c
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Annexure 3 EST for Energy Conversio
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Detailed Process Description Figure
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Forest Products Research and Develo
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Advanced Gasification-Combustion (A
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Wood wool cement board (WWCB) Cemen
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Furnace-Type Lumber Dryer 105 Phili
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(i) Charring Drum. The charring dru
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The mould set is filled with the mi
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Solar Collector The solar collector
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Fluidized Bed Combustor for Steam G
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Small-Scale Biomass Pyrolyzer for F
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chips) aside from palay and allows
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Detailed Process Description There
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The IRRI DR-1 Batch Dryer 117 Phili
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Rice Hull Furnace attached to a blo
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was not continuously discharged fro
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Detailed Process Description Drying
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Rice Hull Ash Cement (RHAC) Hollow
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Annexure 4 EST for Material Convers
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Through a joint venture component m
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Abaca Mechanical Tuxer 129 Philippi
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Economic instruments for overcoming
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Figure 2. Fiber Twisting Machine
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Example of Real Life Applications C
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Main Products: Cellulosic Ethanol O
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converted to a high-carbon char mat
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NovaGreen Biomass Ethanol Separatio
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Advantages to Developing Countries
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Detailed Process Description 133 On
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286
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agricultural waste could theoretica
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downstream value-added products whe
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Bio-Enriched Method (Trichoderma an
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Increases yield. Improves water-hol
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Environmental Considerations 141 Co
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298
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150 150 http://www.kinseiseishi.co.
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152 Type of non-woven materials Che
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Bale as feedstock USA, Commercial C
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Price of Machine : refer to the tab
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2. Cooking the Fiber: A rope is lai
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9. Weaving: Water is sprayed on the
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Decorticating Machine and Motorised
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usually contains two spindles set i
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tradition and, moreover, the range
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318
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Over 3.5 million coconut farmers ar
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The blades also propel coir fibre t
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Economic instruments for overcoming
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first using the drum method or the
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Job Potential: Farmers' cooperative
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Soundproofing and Insulating Materi
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The environmental impact is signifi
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. Suppliers K.E.F.I. - Kenaf Eco Fi
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Detailed Process Descriptions: 1. H
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Examples of Real Life Applications
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In a two-stage setup, the target wi
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companies with expertise in this we
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Mezcal Production from Maguey Phili
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5. Crushing the agave. The roasted
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Method of Propagation Applying fert
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Main Products 198 Abaca fiber comes
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Being a high-priced fabric has prac
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Detailed Process Description 202 Me
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Rice Husk basket Burner India, Comm
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The ash should be white or grey wit
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Paper from Rice Straw Cyprus, Comme
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1. Vatting - Fill your vat halfway
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Ethanol Production by Acid Hydrolys
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improvements would provide cost sav
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Detailed Process Description 7. Ric
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Plywood from Sorghum China, Commerc
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Example of Real Life Applications L
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Figure 1. Schematic of gasifier-pow
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hull is a processing by-product of
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The size of the mill or number of m
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Figure 3. A 12-ft continuous evapor
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The finished syrup is thoroughly st
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Drinking Vinegar from Sweet Sorghum
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only four months. Ethanol, a cheape
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Davis & Standard Twin Screw Extrude
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Environmental and Social Considerat
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Detailed Process Description Figure
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operational analysis be carried out
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Figure 2. Hopper or Feeder The comp
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Broin Fractionation (BFRAC) 218 USA
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Collaboration with other companies
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NET INCOME Before Tax = 237, 600 -
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Cornstalk Flash Volatilization USA,
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Decentralized Wastewater Treatment
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degrades the wastes. The algal pond
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Job Potential: 231 Preparing the so
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Operations and Maintenance Requirem
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Detailed Process Description There
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Biochar 237 USA, Research Crop Resi
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422
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424
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Detailed Process Description: 241 2
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In addition to functioning as a thi
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The underflow from the first stage
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y essentially dry process technique
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industrial uses. It consists of mol
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yeast for high alcohol, and high-te
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About the UNEP Division of Technolo
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Converting Waste Agricultural Biomass into a Resource - UNEP

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