What Is RDF (Refused Derived Fuel)?
RDF stands for Refused Derived Fuel.
The production of this fuel begins with the mechanical processing of household waste with a waste convertor technology.
RDF consists largely of organic components of municipal waste such as plastics and biodegradable waste.
RDF processing facilities are usually placed near a municipal solid waste (MSW) source.
How is RDF produced? One of the well-established technologies to produce RDF from MSW is mechanical biological pre-treatment (MBT).
The Ecoverde concept uses exactly the benefits based on this concept and installs an MBT plant in each facility which separates out metals and inert materials, screens out organic fractions (for stabilisation using composting processes, either with or without a digestion phase), and separates out high-calorific fractions for RDF.
RDF can also result from a "dry stabilisation process" in which residual waste (after separating out metals and inert materials) is dried through a composting process leaving the residual mass with a higher calorific value.
The materials that do not combust, such as glass or metal parts are taken out in the pre-processing phase of the process.
The material left as residue can later be sold back into the market if it is processed adequately or it can be packed into balers in order to serve other purposes, such as recycling.
RDF is extracted from municipal solid waste using mechanical heat treatment, mechanical biological treatment or waste autoclaves.
The production usually involves some of the following stages: * Preliminary liberation * Size screening * Magnetic separation * Coarse shredding * Refining separation Waste substances undergo a series of varying processing stages.
Recyclable product contents such as metal are removed from the mix, also heavy fractions.
Following the drying and sizing-out process the remaining lighter material for thermal processing makes up approximately 40% of the material deposited at the beginning of the process.
In this way valuable fuels can be generated from waste previously dumped into landfill sites in an unprocessed form.
As the biogenic share is 50% (wood, paper, organic substances), CO2 emissions are reduced by this amount in combustion; a financial advantage when it comes to the awarding of CO2 certificates.
The RDF End market - Who is buying RDF? In terms of applications, RDF has been used in industrialised countries as a fuel supplement for coal-fired utility boilers and as the sole fuel for firing in dedicated boilers.
RDF can be used in various ways for electricity production.
It can provide a funding source where unused carbon credits are sold on the open market via a carbon exchange.
Cement kilns are also able to use the energy generated by the waste material.
The production of this fuel begins with the mechanical processing of household waste with a waste convertor technology.
RDF consists largely of organic components of municipal waste such as plastics and biodegradable waste.
RDF processing facilities are usually placed near a municipal solid waste (MSW) source.
How is RDF produced? One of the well-established technologies to produce RDF from MSW is mechanical biological pre-treatment (MBT).
The Ecoverde concept uses exactly the benefits based on this concept and installs an MBT plant in each facility which separates out metals and inert materials, screens out organic fractions (for stabilisation using composting processes, either with or without a digestion phase), and separates out high-calorific fractions for RDF.
RDF can also result from a "dry stabilisation process" in which residual waste (after separating out metals and inert materials) is dried through a composting process leaving the residual mass with a higher calorific value.
The materials that do not combust, such as glass or metal parts are taken out in the pre-processing phase of the process.
The material left as residue can later be sold back into the market if it is processed adequately or it can be packed into balers in order to serve other purposes, such as recycling.
RDF is extracted from municipal solid waste using mechanical heat treatment, mechanical biological treatment or waste autoclaves.
The production usually involves some of the following stages: * Preliminary liberation * Size screening * Magnetic separation * Coarse shredding * Refining separation Waste substances undergo a series of varying processing stages.
Recyclable product contents such as metal are removed from the mix, also heavy fractions.
Following the drying and sizing-out process the remaining lighter material for thermal processing makes up approximately 40% of the material deposited at the beginning of the process.
In this way valuable fuels can be generated from waste previously dumped into landfill sites in an unprocessed form.
As the biogenic share is 50% (wood, paper, organic substances), CO2 emissions are reduced by this amount in combustion; a financial advantage when it comes to the awarding of CO2 certificates.
The RDF End market - Who is buying RDF? In terms of applications, RDF has been used in industrialised countries as a fuel supplement for coal-fired utility boilers and as the sole fuel for firing in dedicated boilers.
RDF can be used in various ways for electricity production.
It can provide a funding source where unused carbon credits are sold on the open market via a carbon exchange.
Cement kilns are also able to use the energy generated by the waste material.
Source...