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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 5
SUMMARY:Using excess heat in thermal recycling processes with ORC technology
DESCRIPTION:In a world of limited resources, the reuse of materials plays an important role for building a circular economy. An established process in the recycling industry for removal of impurities from steel and metal pieces is the pyrolysis process. Hydrocarbons are removed at elevated temperatures. The process generates excess heat if the syngas produced is being utilized as input fuel. The usage of this excess heat for electricity production and, if required, for providing useful heat is a significant step to lower the Carbon footprint in these processes and additionally to reduce the operating costs.
Dürr Cyplan has executed a best practice example which can be the blueprint regarding energy efficiency for the above-described processes in the steel industry. In this project shredded Aluminum waste is being processed in a rotary kiln (pyrolysis reactor) and purified to high grade Aluminum granulate. The rotary kiln is fired with the flue gases of the burned syngas that was generated in the pyrolysis process. The remaining excess heat from the flue gases is utilized in a high temperature ORC process at a temperature level of ~500°C. The Dürr Cyplan high temperature ORC-module can cover the own consumption of electricity for the whole purification process line and can additionally cover partially the demand of electricity of the whole factory. This brings a saving of ~140tons of CO2 annually* and lowers the electricity bill significantly. The described operating principle can be applied for the upgrading of metal and steel waste.
Dürr Cyplan ORC modules can utilize heat with different interfaces to convert high temperature heat into electricity and additionally useful heat for follow up processes. This operating principle can be described as an electricity producing heat exchanger and can be applied in various process steps within the variety of metal and steel processing.

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DTSTART:20230615T114000
DTEND:20230615T120000
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