Description
The ZFR boiler is an extremely efficient solution featuring double flame tube technology and a three-pass design, producing steam from 18,000 to 55,000 kg/h and pressure up to 30 bar. It has two independent combustion units, offering great flexibility and double configurability to adapt to production needs.
Top Performance Across the Power Range
The ZFR consistently delivers high efficiency, making it ideal for demanding applications with significant steam demand fluctuations. The built-in economizer further enhances efficiency, while the optional condensate heat exchanger reduces fuel demand, ensuring cost savings.
Environmentally Friendly
With its large furnace, the boiler achieves exceptionally low emissions, below 50 mg NOx, contributing to a reduction in environmental impacts.
Ideal for Demanding Applications
The ZFR provides a reliable solution for high steam demand fluctuations, with complete separation between the flue gas pathways and combustion units, allowing continuous operation and reduced activation/deactivation cycles. This means maximum efficiency even in partial load areas.
Customized Equipment and Superheated Steam
The ZFR is tailored according to the needs of each project, offering a complete system with excellent thermal insulation and pre-set control. The optional superheater unit makes it ideal for producing superheated steam in industries and power generation plants.
Future Resilience and Fuel Flexibility
The ZFR is future-proof, capable of operating with various fuels such as hydrogen, biogas, bio-oil, or as a hybrid boiler using green electricity. It can be configured for CO2-neutral emissions, either from the outset or through retrofitting.
Smart Control and Industry 4.0 Integration
Bosch’s smart BCO and SCO controls ensure full automation and easy connection with process control systems. Optional digital efficiency support and remote access facilitate seamless integration with Industry 4.0 technologies.
Technical Specifications:
- Steam Production: 18,000 to 55,000 kg/h
- Safety Pressure: Up to 30 bar
- Maximum Temperature: Up to 235°C
- Fuels: Gas, oil, biogas, bio-oil, hydrogen
The ZFR offers the stability, performance, and innovation you need for effective and sustainable heat production.







