Depollution
Controlling pollutant emissions from internal combustion engines is a strategic challenge for industry today. Environmental standards impose ever stricter thresholds on exhaust gases – carbon monoxide (CO), unburned hydrocarbons (HC), nitrogen oxides (NOx) and fine particles (PM/PN). To meet these requirements, Groupe BOËT develops and integrates cutting-edge pollution control solutions for diesel and gas engines.
Our technologies combine catalytic expertise and advanced filtration: oxidation catalysts, SCR (Selective Catalytic Reduction) systems, open filters (POC) and particulate filters (FAP). These devices transform pollutants into harmless compounds, drastically reducing emissions while maintaining plant performance and reliability.
Whether for new projects or retrofit operations, Groupe Boët supports its customers in the design and integration of tailor-made solutions, guaranteeing regulatory compliance and sustainability. With a results-oriented approach, we make pollution control a real added value for your industrial processes and your environmental commitments.
Our expertise in industrial engine pollution control
Groupe BOËT designs and integrates complementary technologies designed to reduce all pollutants emitted by internal combustion engines. These solutions cover both new projects and retrofit applications, with a constant objective: to ensure strict regulatory compliance while maintaining the reliability and energy efficiency of installations.
The oxidation catalyst is the first barrier against pollutants. It converts carbon monoxide and unburnt hydrocarbons into carbon dioxide and water vapor. Its design is based on a monolithic multi-channel support impregnated with noble metals such as platinum and palladium. These active surfaces trigger the oxidation reactions as soon as the gas temperature reaches around 250°C, guaranteeing efficient conversion right from the first operating regimes. The catalyst also plays an essential role in preparing the gases for downstream devices.
Selective catalytic reduction, or SCR, is the most effective technology for reducing nitrogen oxides. The process is based on the injection of a urea solution which, under the effect of heat, decomposes into ammonia. On contact with the catalyst, the ammonia reacts with the NOx to transform it into nitrogen and water vapor. Under thermal conditions of between 300 and 450°C, the conversion rate can reach 95%, making it an indispensable technology for meeting European Stage V or maritime IMO Tier III standards. Its implementation requires precise sizing and perfect mixture homogeneity to guarantee constant efficiency, even on high-power engines.
Particle treatment is based on two separate devices. The POC, or Particle Oxidation Catalyst, is an open filter consisting of a coiled metal substrate. It captures particles long enough for them to be oxidized by the nitrogen dioxide produced upstream. Suitable for retrofits, this system reduces emissions with a low pressure drop. The particulate filter, or DPF, operates on a closed principle: gases must pass through porous walls where particles are trapped and then eliminated by regeneration. Regeneration can be passive, thanks to nitrogen dioxide, or active, by raising the temperature via post-injections. The reduction rate exceeds 95%, making it the most effective solution for applications requiring near-total filtration.
Retrofit and custom integration complete the BOËT approach. They enable existing installations to be modernized to meet new environmental requirements. Each project is studied according to its thermal, mechanical and fluidic constraints. Systems are designed on a modular basis to minimize downtime and optimize maintenance. This approach ensures rapid and lasting compliance, while extending the life of the motors.
Custom integration
Advanced engineering
Cost reduction
Optimized footprint
Our pollution control technologies
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