Objective
MUCH RESEARCH INFORMATION IS AVAILABLE ON THE BURNING OF COAL IN FLUIDIZED BED COMBUSTION BOILERS, BUT THERE IS VERY LITTLE INFORMATION AVAILABLE ON THE BURNING OF REFUSE DERIVED FUEL AND INDUSTRIAL WASTE.
THE PURPOSE OF THIS STUDY IS TO DEMONSTRATE THE FEASIBILITY OF BURNING THESE FUELS IN FLUIDIZED BEDS. IF THIS IS PROVEN, GOOD PRIMARY FUELS THAT ARE IN SHORT SUPPLY, SUCH AS GAS AND OIL, COULD BE REPLACED BY THESE FUELS.
THE FLUIDIZED BED COMBUSTION OF REFUSE DERIVED FUEL (RDF) AND INDUSTRIAL WASTE IS BEING TESTED IN A 300 KW FLUID BED INSTALLATION. THE WASTES BEING TESTED ARE REFUSE DERIVED FUEL, RUBBER, CARBONACIOUS WASTE, INDUSTRIAL SLUDGES, CHICKEN AND PIG MANURE, WOOD WASTE, PAPER AND CARDBOARDS.
THE PHYSICAL PROPERTIES OF THE WASTE REQUIRE SPECIAL ATTENTION BEING GIVEN TO THE DESIGN OF THE FEEDER SYSTEM TO ENSURE A CONTINUOUS CONTROLLABLE FEED RATE INTO THE BOILER. WHEN DISCHARGED BELOW THE BED SURFACE, EVEN LOW DENSITY AND FINELY DIVIDED MATERIALS ARE ADEQUATELY ENTRAINED AND BURNT TO GIVE ACCEPTABLE UNBURNT SOLID LOSSES.
AN INTERNAL CIRCULATION OF THE BED INDUCED BY THE SLOPED PROFILE OF THE BOTTOM ENSURES GOOD MIXING OF THE FUEL AND GOOD BURN OUT. IT IS IMPORTANT TO INTRODUCE THE FUEL IN THE CENTRAL LOWER REGION OF THE BED SO THAT IT IS ENTRAINED AND STAYS IN THE BED AS LONG AS POSSIBLE BEFORE IT REACHES THE SURFACE. A HIGH PROPORTION OF THE VOLATILE HYDROCARBONS IS HOWEVER STILL RAPIDLY RELEASED AND IS BURNT ABOVE THE BED GIVING A HIGH CO CONTENT (0,5 %). IN ORDER TO AVOID THIS, AIR IS INTRODUCED ABOVE THE BED IN ORDER TO BURN THE CO.
WASTE GENERALLY HAS A LOW CALORIFIC VALUE AND MAY BE WET. THE ADDITION OF COAL OR PROPANE IS THEREFORE NECESSARY. TESTING HAS SHOWN THAT IT WAS POSSIBLE TO SUSTAIN COMBUSTION IF 60 % OF THE HEAT INPUT WAS PROVIDED BY WASTE RESIDUE. IT WAS ALSO SHOWN THAT IF PELLITIZED FUEL (RDF) IS USED AN EFFICIENCY OF 80 % CAN BE OBTAINED.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Coordinator
RH10 2RN Crawley
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.