The Energy Company Ltd ("ECL"

The Energy company Ltd_(.ECL') is a private renewabre energy company. Itschosen technology is gasification and a single gasifier can gasify 1.5 tonnes ofpelletized RDF an hour. Two of the marretJbtJoutputs-oi the process are electricityand heat: The renewable power generation is for jrid export and the heat productionfor use on its adjoining waste maiagement site. The feedstock when combusted-results in the production of syngas which when fedinto a de-rated 3My

latular gas engine courd produce a 1.gMW gross erectricaroutput. The parasitic load is approxim ately 1S%. ECL are proposing a bank of g gasifiers.

ECL have decided.that the only way to ensure the quality of the (Refuse derived fuel)RDF is to process it on their adloining waste management rit". They will remove allthe recyclables and make the pellets to their o*n r-p""iri"rtion. Both raw MSW andthe pelletized RDF will be stored on the adjoining site. lhe.rels-lconveyor system which will move the RDF from the adjoining site and oneday's RDF is stored under cover on the energy generation site. The RDF is movedfrom-.store to the gasjfiers.by conveyor. ftre nbF is loaded through the top of eachgasifier' The waste from the gasifiiation process includes ash, oil from the engines,general waste and sludge from the gas cleaning pro""i..- i Gasification is a 24 hoiri a day operation. There are significant vehicle movements.The fuel dust is potentially explosive. The sludge f*r,iir.r ir produced from the water,which is used as part of the gas clean up process) is high in carbonaceous particles and tars. The gas itself is potentially explosive. The only emissions to air are through the common exhaust stack into which theengine exhausts are fed and the flare stack used to flare the gas when electricity isnot being generated.

ECL are concerned to maximise energy generation through correct specification of the RDFas possible is generated from the RDF. Explain what factirs need to be considered toensure optimum cv of the RDF. Please also discuss the economic viability of the scheme including any support mechanismswhich may be available from Government You are aflvising ECL as a consultant to the company. your answer should be in the form ofa report to\rcl and include an executive summary. It should be 2000 words and includeappropriat{ references and bibliog rrp-hy

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