Custom Boiler Design

Prevention is better than cure. The same applies to NOX emissions. The good news is that NOX formation can be significantly reduced at source by making the right choices when designing a new boiler installation or carrying out a major retrofit.

The Callens Group develops industrial boiler installations where emission reduction, energy efficiency, and operational reliability are built in right from the design stage. By carefully aligning the combustion chamber, burner configuration, air supply, and flue gas flows, we deliver an installation that meets the strictest emission standards without compromising on efficiency.

Discuss your boiler design

When is a custom boiler design worthwhile?

Are you considering a new boiler? Or do you want to retrofit an existing boiler? In both cases, it pays to think carefully about the design so that you can limit NOX emissions and avoid additional investment in flue gas aftertreatment.

The Callens Group examines your process context when designing or renovating a boiler. Our engineers consider your fuel option(s), heat demand, load profile, available space, and future expansion plans.

Why choose a custom boiler design?

  • To limit NOX emissions during the combustion process.
  • To prepare a new installation for future emission standards.
  • To combine energy efficiency with emission reduction.
  • To invest in a future-proof heat installation.
  • To reduce the need for additional NOX reduction technologies.
Engineeringnet 4
Your challengeDesign solution
The lowest possible NOX emissions right from the word goOptimized combustion chamber
Uniform, stable combustionOptimized burner configuration
Optimal air-fuel ratioSmart air supply system
Being prepared for stricter emission standardsFuture-proof boiler design
New installation with maximum energy efficiencyIntegrated design by Callens
Combining multiple emission targetsCustom engineering

Which design choices determine NOX emissions?

The NOX emissions of a boiler installation are not determined by one single component, but by the interaction between several design choices. The shape of the combustion chamber, the burner configuration, air distribution, flame residence time, and temperature distribution all influence the formation of nitrogen oxides.

That is why the Callens Group always starts from an integrated engineering study. Our specialists analyze the full combustion process and align all design parameters with one another. The result? An installation that delivers the required heat capacity, ensures stable combustion, and keeps NOX formation to a minimum.

For every design, we analyze aspects such as:

  • What heat capacity and load profile are required?
  • Which fuel or combination of fuels will be used?
  • What combustion temperatures are optimal?
  • How can air supply and burner distribution be optimized?
  • Is flue gas recirculation recommended?
  • Are additional technologies such as SCR or SNCR necessary?
  • How can maximum efficiency be maintained?

Once we have the answer to these questions, we can define the right design.

BENEFITS

Benefits of
a custom boiler design

A smart boiler design does more than limit emissions. It also improves the performance of the entire installation. By factoring in combustion, energy efficiency, and future regulations right from the design stage, you get an installation that continues to perform at its best for years.

Less NOX
at source

The formation of nitrogen oxides is already limited during the combustion process.

Higher
boiler efficiency

Optimized combustion results in more efficient heat transfer and lower fuel consumption.

Less need for additional aftertreatment

By significantly reducing NOX formation, the need for additional emission control technologies can decrease.

Reliable long-term operation

A well-considered design provides stable combustion and high operational reliability.

Fully
customized

Every installation is designed based on your heat demand, choice of fuel, and operational objectives.

Ready for future regulations

The installation is designed with current and future emission standards in mind.

Which design parameters influence NOX formation?

The NOX emissions of a boiler installation are determined by the interaction between different design choices. By optimally aligning these parameters during the engineering phase, the Callens Group limits nitrogen oxide formation at source and creates an installation that combines emission reduction with high efficiency and maximum operational reliability.

Fuel option(s)

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Burner configuration

↓

Air-fuel ratio

↓

Combustion chamber design

↓

Flame temperature and residence time

↓

NOX emissions

Callen N Ox Aangepast ketelontwerp

“Maximizing energy efficiency does not start with choosing a technology. It starts with mapping your specific environment and goals.”

FAQ

Questions?
We have the answers.

A low-NOX boiler design limits the formation of nitrogen oxides right from the design stage of the combustion installation. By optimizing the combustion chamber, burner configuration, and air supply, less thermal NOX is formed without compromising on efficiency.

Discuss the possibilities with our specialists.

When a new installation is being built or an existing boiler is undergoing a major retrofit, a custom design can often significantly reduce NOX emissions. When emission limits are very strict, the design can also be combined with technologies such as flue gas recirculation or SCR/SNCR.

Wondering which option might be the most beneficial for your installation? Our experts are happy to think along with you.

Yes. The Callens Group takes on entire projects from analysis and engineering to delivery, installation, commissioning, and maintenance. Thanks to this integrated approach, you have one partner throughout the entire process and can count on an installation that optimally combines emission reduction, energy efficiency, and operational reliability.

You can find more information about the different steps in our workflow here.

Yes. In many cases, existing installations can also be adapted through changes to the burner, air distribution, or combustion chamber. The Callens Group examines which modifications are technically feasible and what emission reduction they can achieve.

Our engineers analyze aspects such as heat demand, fuel option(s), load profiles, target emission values, available space, and future expansion plans. Based on that, we develop a boiler concept that provides the right balance between efficiency, emission reduction, and investment cost.

Do you have a project in mind? Discuss it with our specialists.

Do you have a project inquiry?

Tell us about your challenges. We turn them into
practical advice.

Contact us