Waste to Energy by Preparation of Quality Controlled SOLID RECOVERED FUELS (SRF)
Solid Recovered Fuels (SRF) are waste fuel that is made from high calorific fractions of municipal,commercial or industrial waste materials,having a Net Calorific Value (LHV) between l1MJ/kgos and 25MJ/kgos,that is used in co-incineration plants (i.e.grate firing systems,fluidized bed boilers and rotary kiln) for the purpose of energy generation.This contribution describes the Legal Framework,the Preparation,the Classification and Quality Assurance as well as the Application of SRF for substitution of fossil fuels in co-incineration plants.In Austria,the quality criteria for waste fuels are defined in the Guideline for Waste Fuels1 and the Waste Incineration Directive2,where pollutant limits are given for the heavy metals content which are related to the heating value of the waste fuel.Thus,the quality of SRF is regulated by limit values (i.e.pollutant content per net calorific value (mg/MJDM) for As,Pb,Cd,Cr,Co,Ni,Hg,Sb and a distinction is made for three different types of plants,i.e.cement kilns,power stations and other co-incineration plants.Preparation and manufacturing of SRF is accomplished by a multi stage process,including classifying and sorting of material fractions as well as separation of ferrous and non-ferrous metals as also unwanted heavyweight inert materials (e.g.,stones).This is followed by SRF-eonfeetioning,which includes crushing drying and (sometimes) pelletizing to improve the feeding and combustion behavior of the waste fuel.The classification into different SRF qualities or specifications usually depends on the parameter:net calorific value MJ/kgos,particle size d95 mm,oversize fraction %,impurities %,chlorine content %,ash content %,and sometimes moisture % too.For quality assurance of SRF,guidelines for representative sampling,sample preparation as well as parameter to be considered and analysis methods to be applied have been developed like CEN/TC 343-Solid Recovered Fuels3 or (O)NORM EN 154424.Finally,the application of SRF as substitute fuel in cement plants is shown by reporting about the preparation of premium class primary burner fuel and low grade hot disc fuel in a multi stage SRF production plant5.
waste to energy solid recovered fuels (SRF) co-incineration SRF-specification SRF-preparation quality assurance cement industry fuel substitution
K E LORBER R SARC
Institute for Sustainable Waste Management and Technology(IAE), Montanuniversitaet Leoben, 8700 Leoben, Austria
国际会议
合肥
英文
13-18
2012-05-24（万方平台首次上网日期，不代表论文的发表时间）