Increasing energy efficiency: A plant manufacturers view

To increase the energy efficiency of the waste-to-energy plants is the main challenge of each plant manufacturer. This article lists some current trends and picks- up three of them by mean of examples from current Keppel Seghers projects.

Whereas Waste-to-Energy plants of the ‘first-generation’ (built in the 1980s) were conceived as stand-alone facilities with the main purpose to get rid of waste, plants of later construction dates started to contain technical solutions to reduce (excessive) energy losses. The electricity produced however was still regarded as a by-product at most of WtE-sites. Modest plant (gross) efficiencies < 24% can be easily understood since the income of those WtE-plants – mostly owned and operated by authorities – was by far more dependent on gate fees than on revenues from electricity sale. As in a public context gate fees are indirectly being paid by the community through taxes or contributions on garbage bags, the viability of WtE-plants is in fact secured without a strong need for optimizing the energy output.



Copyright: © Wasteconsult international
Source: EU Waste Management - Implementation of the Waste Framework Directive (Juni 2010)
Pages: 11
Price: € 5,50
Autor: Dipl.-Ing. Mariusz Maciejewski

Send Article Add to shopping cart Comment article


These articles might be interesting:

Energetische Verwertung in der Wirbelschicht für kommunale und industrielle Abfälle
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2010)
Ersatzbrennstoff-Anlage im Industriepark Höchst

Destinations for the High Calorific Fractions from Mechanical and Mechanical-Biological Treatment
© Arbeitsgemeinschaft Stoffspezifische Abfallbehandlung ASA e.V. (9/2012)
High calorific fractions have the biggest share of the solid output of modern MBT plants. Finding an application for these fractions should be already done before starting to construct an MBT plant. This can be a challenge, especially in countries or regions, where thermal treatment options are unwanted. The paper describes properties of these materials, requirements on material quality and possible destinations. In Germany, SRF is mostly used in power plants, cement works and mono incineration plants. The most critical parameters are chlorine content and calorific value.

Innovative Concepts for Highly Efficient Energy-from-Waste Plants in the Netherlands
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2011)
In 2008 AE&E Lentjes GmbH received the order for the turnkey supply of the incineration unit REC Harlingen (REC=ReststoffenEnergieCentrale). In this plant the high calorific portion of pre-treated municipal solid waste is thermally treated.

Erkenntnisse aus Herstellung und Verwertung von Ersatzbrennstoffen geringerer Aufbereitungstiefe in einem Mittelkalorik-Kraftwerk
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2010)
Der Landkreis Diepholz (NDS) hat sich bereits im Jahr 1993 für den Bau einer mechanisch-biologischen Abfallbehandlungsanlage (MBA) entschieden, um den bis dahin schon umfangreich ausgebauten und infrastrukturell gut erschlossenen Deponiestandort Bassum langfristig zu sichern und wirtschaftlich weiter zu betreiben. Bau und Betrieb der MBA wurden seinerzeit vom Landkreis der AbfallWirtschaftsGesellschaft mbH (AWG) Bassum als hundertprozentigem Tochterunternehmen vollumfänglich übertragen.

The Thermal Waste Utilisation Plant MSZ3 Moscow as an Example of Implementing and Operating a Combined Heat and Power Plant
© TK Verlag - Fachverlag für Kreislaufwirtschaft (3/2010)
EVN AG is a leading utility that provides energy and environmental services on an international scale. Domiciled in Lower Austria, the largest state of Austria, it is listed on the Austrian stock exchange. With its energy sector, EVN operates not just in Austria but has successfully expanded to Bulgaria and Macedonia. For its environmental services, EVN has acquired considerable expertise in Austria and in many countries in Central, Eastern and South-Eastern Europe. EVN supplies electricity, gas, heating and clean drinking water to its customers and takes care of proper sewage disposal and ecological garbage treatment.

Username:

Password:

 Keep me signed in

Forgot your password?