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Sign upMarch 31, 2022
Wittekind Hugo Miebach Söhne KG
Erwitte
The long-established family-owned Portlandzementwerk Wittekind Hugo Miebach Söhne KG from Erwitte in southern Westphalia installed six energy efficiency modules from Orcan Energy in 2022. With the plant modernization, the cement plant intends to generate additional electricity and significantly improve its eco-balance through sustainable energy generation. The Wittekind cement plant has one rotary kiln and ten shaft kilns, with a total approved capacity of 3,500 tons of cement clinker production per day. As a result of the process, usable exhaust air from a clinker cooler is available, which is fed to an air-water heat exchanger. Water is heated and transported to the Orcan ORC modules (efficiency PACKs) via a closed hot water circuit. The efficiency PACKs thus generate electricity from the hot exhaust air, which is consumed in the on-site power grid. By cooling the exhaust air, additional cooling capacity can be saved on the existing air-to-air cooler.
The eP 150.200 efficiency Packs lead to savings on the existing cooler and convert the - previously unused - waste heat generated during energy-intensive cement production on site. The six efficiency PACKs generate up to 1 MW of net power and save up to 4000 t CO2eq. annually. It is the first modular ORC installation at a cement plant worldwide.
The complexity in designing ORC plants meant only niche applications with large uniform heat sources, e.g. geothermal, could be exploited commercially. Orcan developed a new generation of ORC products based on a modular design. These ORC units are much more versatile and feature significantly lower LCOEs, even reaching the level of baseload electricity driven by fossil fuels. Orcan is the leading supplier of such modular and compact ORC products, both in terms of the number of ORC units installed as well as cost-effectiveness. By converting a complex thermodynamic system into a plug & play product, the technology has been made available for mass application. The Efficiency Packs are designed in a way to reduce project-specific engineering effort. The final ORC unit was designed with manufacturability in mind. Cost positions previously only available in large-scale ORC plants, can now also be achieved in the small- to mid-scale waste heat market.
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