How to use stored waste heat in steelmaking plant?

Regarding the utilization of the stored waste heat, the preferential application found in literature is the production of electricity in the steelmaking plant through Organic Rankine Cycle (ORC) turbines , . This technology shows a great flexibility able to adapt to the fluctuations derived from the batch operation of the EAF.

Is steelmaking a potential waste heat recovery sector?

In particular, within RESLAG project, the steelmaking industry has been addressed in detail, since it has been widely identified as one of the industrial sectors with largest potential for waste heat recovery. Current steel production in Europe is dominated by the so-called electric arc furnace (EAF) route.

What is the preferred heat recovery strategy for EAF steel?

Although steam production has usually been the preferential heat recovery strategy in the EAF steel process, other alternatives have also been proposed. Indirect storages based on solid materials such as natural rocks together with organic fluids for heat transfer such as oils or glycol have also been presented .

How much energy can be stored in a TES tank?

It should be noted that, given the mentioned operating parameters and the TES tank size, the maximum energy that could be stored in the proposed prototype, if all the TES material varies its temperature from 20 to 700 °C, is 1.05 MWh th. Table 3. Main operational parameters of the TES unit. 3. Model description and validation