Drastic CO2 reduction at Rexnord Kette GmbH

CO2 emissions of a belt oven drastically reduced through modernization

Rexnord Kette GmbH and WS have successfully modernized a belt furnace, reducing the furnace's CO2 emissions by 35%. In addition to new burners with maximum energy efficiency, the optimization of the operating mode also contributes to the CO2 reduction.
Image source: Rexnord Kette GmbH

Focus on environmental protection goals

Ambitious environmental protection targets and rising energy costs require operators of heat treatment plants in the high-temperature range to investigate what measures can be taken to improve the energy balance of their plants. The employees responsible for this at Rexnord Kette GmbH at the plant in Betzdorf first drew up a detailed matrix in which all the key parameters of the systems and heating technology were systematically recorded. In joint discussions with the technical support team of WS Wärmeprozesstechnik GmbH, they then developed sub-steps to implement the theoretical findings on the system and evaluate them step by step.

Optimization in several steps

The project was started on a belt furnace that had already been modernized many years ago with standard recuperative burners. Initial, simple optimization steps ensured that 15% of energy could be saved immediately. In a second step, highly efficient REKUMAT® gapflow burners were retrofitted into the existing furnace. With the help of these extremely energy-efficient burners, which have proven reliable in many applications over years of operation, as well as further optimizations to the heat distribution, a total CO2 reduction of 35% was achieved during the course of the project compared to the previous construction status. Thanks to the WS patented FLOX® technology, the modernized system also achieves outstandingly low NOx emission values.

WS REKUMAT® S: Maximum efficiency thanks to patented splitting current technology.


Close cooperation leads to success

The successful project clearly demonstrates the opportunities that arise when system operators and technology suppliers, each with decades of experience, contribute their know-how to develop and implement a joint, coherent modernization concept.


Expansion of the charging infrastructure for electric vehicles

Fast for the few or slow for everyone? WS is pursuing its own concept when it comes to expanding the charging infrastructure for electric vehicles. In order to achieve a low-cost yet effective charging system on the factory premises, WS consistently relies on a low charging capacity.


Green hydrogen: WS puts electrolyzer into operation

With the help of a new electrolyser and surplus electricity from its own PV systems with a capacity of over 400 kWp, WS will supply the laboratories in Renningen with green hydrogen in future. Following the installation of the electrolyser at the end of 2023, the storage and pipeline infrastructure is now also fully operational.


Minister President Kretschmann visits WS in Renningen

Baden-Württemberg's Prime Minsiter Winfried Kretschmann visits WS in Renningen to find out about activities in the field of hydrogen. In addition to the production of green hydrogen from biogas and decentralized ammonia cracking, the high-ranking visit also focuses on the highly efficient and low-emission industrial burners manufactured by WS.


Research field of thermal process technology

The new research field of thermal process technology is dedicated to the goal of defossilizing high-temperature processes above 1,000 °C. While some processes are flexible enough to be heated with renewable electricity, climate-neutral fuels will be necessary for many applications in the future.


REGEMAT® 250: Strong increase in sales figures

Continuous and recently even particularly strong increases in sales figures prove that the REGEMAT® 250 is the new gold standard for modern strip galvanizing lines. Customers are impressed by the lowest NOx values with maximum efficiency as well as its future viability thanks to its outstanding suitability for operation with hydrogen.


Start of 2024: Innovation & investment

The WS Group is looking forward to an exciting and successful year 2024. We are expecting the completion and commissioning of several pioneering investments. On the product side, our customers can also look forward to various innovations and further developments that will make a decisive contribution to their success in achieving true sustainability.