Biomass to Fuel Presentation - Rushlight Events · Biomass to Fuel Presentation . Rotawave Ltd...
Transcript of Biomass to Fuel Presentation - Rushlight Events · Biomass to Fuel Presentation . Rotawave Ltd...
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Targeted Intelligent Energy System
Biomass to Fuel Presentation
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Rotawave Ltd
Demands on Power Generation 1. Growing Energy Demand
Population Growth Improving standards in the third world
2. Reducing the impact of electricity generation
Clean fossil fuel technology Renewables
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Rotawave Ltd
Biomass Generation – part of the mix
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Worlds fourth largest energy resource Renewable and sustainable Cost effective with respect to other renewable energy resources Base load option – not influenced by weather etc. Commercially proven
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Coal Substitution
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Capital Plant - Many existing coal fired generation sets no longer meet environmental legislation, and are closing. - They need to reduce carbon dioxide (CO2), sulphur dioxide (SO2), oxides of nitrogen (NOX), hydrogen chloride (HCl), and particulates (dust) - The cheapest way to convert them is using a substance which is like coal, but does not have the same emissions. - Projected power short fall as early as 2014.
Opex - Typically a power station emits 2.3 tonnes of C02 for every tonne of coal burnt. - The ETS charge adds 0.7p extra per kWh.
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Rotawave Ltd
Disadvantages of untreated biomass Advantages of torrified biomass Poor long term stability Stable no biodegradation
Water sensitive Hydrophobic
Fibrous, difficult to grind Brittle, suitable for ball mills
Feedstock-specific material handling Compatible with coal handling equipment
Low energy density High energy density
Poor transport economics Improved transport economics
Problems with Biomass as Fuel
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Rotawave Ltd
What is torrefaction?
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• Torrefaction of wood can be described as gently heating wood in a low oxygen environment.
• Biomass properties are changed to obtain a much better fuel quality for combustion and gasification applications.
• Torrefaction leads to a dry product. • Torrefaction combined with densification leads to a
very energy-dense fuel of 20 to 25 GJ/ton. • Unfortunately heating a great insulator like wood in
an even manner is not that easy…..unless.
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Rotawave Ltd
Energy can be transferred directly
Solution - Microwaves
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Biomass
Water High Penetration
No contact
Targeted heating of active sites hence Low Bulk Temperature
Active Sites
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Rotawave Ltd
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Biochar Production at Our Pilot Plant
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Conventional Thermal Char Rotawave
Char
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Rotawave Ltd
Biomass
Microwave treatment
Char: solid fuel Drying
Thermal Energy
Electrical Energy
Microwave Biomass Process
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Select Gas
Export
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Rotawave Ltd
Typical Pellet Properties • High calorific value 21- 26MJ/kg • Low ash <3% • Low sulphur • High HGI >40 • High bulk density >700kg/m3 • Water resistant • Fully compatible with coal • High energy density • Low GHG
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Rotawave Ltd
So how does it compare?
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Rotawave Ltd
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and the proof of the pudding……