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Kroll & Ziller

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At a glance

Project: Modernization of an outdated steam system

Industry: Manufacturing of technical seals and flange connections

Location: Germany

AURA Solution

The electric thermal oil system ensures a significantly more stable production process, reduced energy costs, and zero direct CO₂ emissions.

Initial situation

For over 80 years, Kroll & Ziller GmbH & Co. KG has been manufacturing high-quality sealing solutions – including for the food industry, chemical sector, mining, and drinking water supply. Industrial process heat is essential here to shape materials, cure them, and ensure long-term functionality. 

Until now, the presses used in the vulcanization process at Kroll & Ziller were operated with a fuel-fired steam system – a setup associated with high energy consumption, intensive maintenance, and significant operating costs. The objective: A modern, efficient system to reduce the carbon footprint. 

AURA solution

In this project, we implemented two key technology shifts: 

1.Transition from fuel-fired to electric heating: 
The new electrically heated system now operates emission-free, safely, and with minimal maintenance. Thanks to precise temperature control, Kroll & Ziller benefits from increased process stability and improved energy efficiency. 

2.Conversion from steam to thermal oil as the heat transfer medium: 
Thermal oil can be operated at high temperatures with virtually no pressure, reducing requirements for pressure vessels, piping systems, and safety valves.