Waste heat boiler
Efficient heat recovery and steam generation
Our waste heat boilers utilize unused waste heat from industrial processes, thereby contributing to energy efficiency and CO₂ reduction. We offer various designs: AHK, AHK (SB), and AHK-ip (SB) – each optimally adapted to different heat sources and performance requirements.
Waste heat boiler systems for energy recovery
The regenerative use of waste heat describes the conversion of process-related energy losses into reusable forms of energy such as steam or hot water. The sources of waste heat are as varied as the technical solutions for converting it into usable forms of energy. In some applications for waste heat boilers—such as chemical process engineering—the focus is often purely on process cooling.
Depending on the type and nature of the waste heat or useful heat flow on the one hand and the form of heat energy required on the other, we can supply you with the right boiler solution for every requirement. This special product category usually involves a customized boiler solution, which is only supplied in multiple quantities in rare cases.
Product variants at a glance
SCHNEIDER AHK
Smoke tube boiler
The SCHNEIDER waste heat boiler, type AHK, is a fire-tube boiler with a smooth-tube design and represents the simplest design of our waste heat boiler range.
Power
- As a steam generator: Steam output up to 30 t/h
- As a hot water generator: heat output up to 20 MW
Benefits
- Simple, compact design
- Increase in overall plant efficiency
- Reduction in operating costs
- CO2 savings
Areas of application
The AHK is typically supplied as a downstream heat recovery unit behind internal combustion engines such as gas and diesel engines or gas turbines as a combined heat and power unit.
- Various industrial sectors
- combined heat and power
- combined heat, power, and cooling
SCHNEIDER AHK-ip (SB)
Smoke tube boiler
with steam drum
SCHNEIDER AHK-ip (SB)
Version with special surface-structured heat transfer tubes (ERK tubes)
- To improve heat transfer
Power
- for high pressure levels and high performance
- Steam capacity up to 60 t/h
- Vapour pressures up to 60 bar (g)
Benefits
in addition to type AHK:
- Large steam chamber (without additional drum fittings)
- Reduction in operating costs
- CO2 savings
Areas of application
- Chemical and process engineering
- general process engineering
- Waste management
- Cement/glass industry
Improvement of heat transfer through special tubes (ERK tubes)
Our AHK-ip and AHK-ip (SB) waste heat boilers use ERK tubes instead of smooth tubes to increase efficiency, reliability, and ease of maintenance.
The structured recesses in the pipes generate tangential and radial mixing movements, which cause turbulence to develop early on inside and outside the pipe.
This significantly improves heat transfer, while particles in the media adhere to the pipe walls at a much lower speed, as a considerable proportion of them are carried away by the turbulent flow.
Dies führt zu längeren Betriebszyklen, weniger Wartung, deutlich reduzierter Reinigung und geringeren Ausfallzeiten.
Benefits
- Improved heat transfer
- Reduced particle build-up
- Longer operating cycles
- Less maintenance, less cleaning, less downtime
- Up to 50% smaller in size and weight, whilst maintaining the same capacity
- Up to 30% greater heat capacity for the same volume
- Low resistance to thermal expansion
- High mechanical stability thanks to a textured surface
Benefits for your application
- Use of waste heat for additional steam generation
- Reducing energy costs and CO₂ emissions
- Flexible adaptation to different industrial processes
- Robust and durable construction
Industries for which we develop boiler solutions
Norms and Certifications
Manufactured in accordance with the EU Pressure Equipment Directive 2014/68/EU, EN 12952 / EN 12953.
Optional design in accordance with the ASME standard.
Talk to our experts
Whether you need a new system or want to optimize existing steam systems, we provide individual advice and find the right solution for your process.