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VGB POWERTECH 7 (2021) - International Journal for Generation and Storage of Electricity and Heat

VGB PowerTech - International Journal for Generation and Storage of Electricity and Heat. Issue 7 (2021). Technical Journal of the VGB PowerTech Association. Energy is us! Optimisation of power plants. Thermal waste utilisation.

VGB PowerTech - International Journal for Generation and Storage of Electricity and Heat. Issue 7 (2021).
Technical Journal of the VGB PowerTech Association. Energy is us!
Optimisation of power plants. Thermal waste utilisation.

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<strong>VGB</strong> PowerTech 7 l <strong>2021</strong><br />

Members´News<br />

EVN: Moderne Krananlagen in der Abfallverwertungsanlage Dürnrohr schnappen wieder kräftig<br />

zu. Fotocredit: © EVN Wurnig<br />

Arbeiten werden von der Krankabine über<br />

Kameras gesteuert und überwacht. Um einen<br />

reibungslosen Ablauf weiter zu garantieren,<br />

wurde hier bei der Programmierung<br />

in ein neues Kran-Management System investiert.<br />

Jährlich 500.000 Tonnen Müll l<strong>and</strong>en im<br />

Müllbunker der Abfallverwertungsanlage,<br />

wo wieder eine Krananlage mit drei Müllkränen<br />

darauf wartet die Abkippstellen frei<br />

zu halten, den Müll zu stapeln und zu mischen<br />

und schließlich auch in den Aufgabetrichter<br />

der Feuerung zu befördern. Ein<br />

Müllkran mit der Traglast von 17 Tonnen<br />

erhielt bei der aktuellen Revision wieder<br />

neue Schleppkabel und Klemmkästen um<br />

wieder kräftig zugreifen zu können, während<br />

seine beiden Kollegen Müllkran 1 und<br />

2 weiterhin einsatzfähig blieben.<br />

Nach dem Verbrennungsvorgang des<br />

Mülls bleibt die sogenannte Schlacke übrig,<br />

die nun aus der Abfallverwertungsanlage<br />

raus befördert werden möchte. Hier<br />

greift der Schlackekran mit einer Traglast<br />

von 12 Tonnen noch einmal ordentlich zu.<br />

Er wurde mit einem neuen Rahmen,<br />

Seiltrommel und Lager sowie Hub-Getriebe<br />

bestückt.<br />

„Bei jährlich 130.000 Tonnen beförderter<br />

Schlacke vom Schlackebunker auf Bahnwaggons<br />

war diese Erneuerung sicher eine<br />

Art Kur für den seit 2003 arbeitenden<br />

Schlackekran“, freut sich EVN Sprecher<br />

Stefan Zach über die rasch umgesetzten<br />

Modernisierungsarbeiten aller Krananlagen<br />

in weniger als 10 Tagen.<br />

EVN Abfallverwertung NÖ:<br />

Aus Müll wird Energie<br />

Die Thermische Abfallverwertungsanlage<br />

ist ein wichtiger Eckpfeiler des Energieknotens<br />

Dürnrohr. Das Energiepotenzial der<br />

Anlage beträgt 210 MW. Aus dem angelieferten<br />

Abfall entsteht Dampf, welcher zur<br />

Erzeugung von Strom sowie Fernwärme für<br />

die Gemeinde Zwentendorf und zwei Drittel<br />

der L<strong>and</strong>eshauptstadt St. Pölten verwendet<br />

wird. Zusätzlich wird die AGRANA Stärke<br />

GmbH mit Prozessdampf beliefert. Durch<br />

Energie aus Abfall werden dadurch fossile<br />

Energieträger eingespart. Ressourcenschonung,<br />

Verminderung von Emissionen und<br />

des Treibhauseffekts, eine erhöhte Luftqualität<br />

in der Region und eine Verbesserung<br />

der CO 2 -Bilanz sind das Ergebnis.<br />

LL<br />

www.evn.at (212251523)<br />

Helsinki to close the Hanasaari<br />

power plant almost two years<br />

ahead <strong>of</strong> schedule<br />

(helen) The Hanasaari coal-fired power<br />

plant will cease operations by 1 April 2023.<br />

The decision has a significant impact on the<br />

carbon footprint <strong>of</strong> Helsinki <strong>and</strong> the entire<br />

country.<br />

“Coal burning in Hanasaari in Helsinki<br />

will come to an end almost two years ahead<br />

<strong>of</strong> the original plan, which will have significant<br />

positive climate impacts. The Hanasaari<br />

power plant is the third-largest source<br />

<strong>of</strong> industrial emissions in Finl<strong>and</strong>, accounting<br />

<strong>for</strong> two per cent <strong>of</strong> total emissions <strong>of</strong><br />

our country. The total emissions <strong>of</strong> Helsinki<br />

will fall by about 20 per cent as a result<br />

<strong>of</strong> the decision,” says Mayor <strong>of</strong> Helsinki Jan<br />

Vapaavuori.<br />

The decision to bring <strong>for</strong>ward the closing<br />

<strong>of</strong> Hanasaari is economically viable <strong>for</strong> Helen,<br />

<strong>for</strong> example, due to the increased price<br />

<strong>of</strong> emission allowances. According to the<br />

original plan, the closing <strong>of</strong> the Hanasaari<br />

power plant would have taken place at the<br />

end <strong>of</strong> 2024. In accordance with the new<br />

schedule, the Hanasaari power plant will<br />

be transferred <strong>for</strong> reserve use in the heating<br />

season <strong>of</strong> 2022–2023 when the bioenergy<br />

heating plant to be constructed in Vuosaari<br />

starts production. After that, the<br />

Hanasaari power plant will be closed down<br />

permanently.<br />

In this first phase, the production <strong>of</strong> Hanasaari<br />

will be replaced with heat pumps, heat<br />

storage, biomass, <strong>and</strong> heat trade.<br />

“It is possible to close the power plant earlier<br />

than planned because over the past few<br />

years we have done a lot <strong>of</strong> work <strong>and</strong> made<br />

significant investments in the production <strong>of</strong><br />

renewable <strong>and</strong> emission-free heat <strong>and</strong> power<br />

production. Helen has been a <strong>for</strong>erunner<br />

<strong>of</strong> new energy solutions throughout its history,<br />

<strong>and</strong> this decision is also a strong indicator<br />

<strong>of</strong> it. Helen has the expertise <strong>and</strong> the will<br />

to have an impact on the energy transition<br />

<strong>and</strong> to find solutions <strong>for</strong> the mitigation <strong>of</strong><br />

climate change. We have reserved a total <strong>of</strong><br />

one billion euros <strong>for</strong> carbon-neutral investments,<br />

<strong>and</strong> one-third <strong>of</strong> the investment decisions<br />

have already been made,” says Helen’s<br />

CEO Juha-Pekka Weckström.<br />

As a result <strong>of</strong> the decision to bring <strong>for</strong>ward<br />

the closing <strong>of</strong> the plant, the Hanasaari<br />

coal store will disappear from the<br />

streetscape <strong>and</strong> the area will be released in<br />

stages <strong>for</strong> the use <strong>of</strong> Helsinki residents.<br />

“In future, the released areas will <strong>for</strong>m a<br />

new focal point <strong>for</strong> the eastern part <strong>of</strong> the<br />

city centre. As a result <strong>of</strong> the removal <strong>of</strong><br />

power plant operations <strong>and</strong> the coal heap,<br />

unique urban space <strong>and</strong> shore areas will be<br />

freed <strong>for</strong> services, operations <strong>and</strong> leisure-time<br />

facilities <strong>for</strong> a vibrant everyday<br />

urban life <strong>for</strong> Helsinki residents. The Hanasaari<br />

area also has a great connection with<br />

the Suvilahti <strong>and</strong> Teurastamo areas <strong>and</strong>,<br />

together, they will have a huge potential to<br />

develop into a new urban cultural district,”<br />

the Mayor, Mr Vapaavuori envisages.<br />

Carbon-neutral Helsinki 2035<br />

The City <strong>of</strong> Helsinki <strong>and</strong> Helen have committed<br />

to carbon neutrality by year 2035.<br />

This target will be achieved in stages.<br />

The City Council decided on closing the<br />

Hanasaari power plant already in December<br />

2015, at which time the preparations<br />

were launched. Since then, Helen’s employees<br />

<strong>and</strong> organisation have been adapting<br />

to the changes in energy production,<br />

<strong>and</strong> these measures still continue. After the<br />

Hanasaari power plant has been closed<br />

down <strong>and</strong> its production has ceased, Helen<br />

will phase out the use <strong>of</strong> coal in full by<br />

2029 at the latest, by which time coal burning<br />

will also come to an end in the Salmisaari<br />

power plant.<br />

Alternative energy solutions <strong>of</strong> the future<br />

have also been sought with new <strong>and</strong> innovative<br />

methods. The City <strong>of</strong> Helsinki requested<br />

sustainable solutions <strong>for</strong> the heating<br />

<strong>of</strong> Helsinki from energy experts from<br />

throughout the world in the Helsinki Energy<br />

Challenge competition. The objective <strong>of</strong><br />

solutions sought with the challenge competition<br />

is to completely phase out combustion-based<br />

energy production in the next<br />

few years, <strong>for</strong> example, with alternative<br />

solutions in Salmisaari.<br />

LL<br />

www.helen.fi (212251531)<br />

19

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