Regulatory compliance
Meet the emission limits required by integrated environmental permits and industry BAT Conclusions.
DeNOx SNCR · Italy & Switzerland · Since 2014
SNCR DeNOx Systems for NOx Emission Reduction
We design and build SNCR systems for biomass boilers, waste incinerators, and industrial combustion processes. In Italy and Switzerland, since 2014.
The problem
Meet NOx emission limits without operational headaches
Nitrogen oxides emitted by combustion plants are subject to increasingly stringent limits under European and Italian environmental regulations. Exceeding these limits means risking fines, plant shutdowns, and suspension of operating permits.
Cost control
Optimize reagent consumption and prevent ammonia slip with automated dosing that scales with plant load.
Operational continuity
New installations and retrofits designed to minimize plant downtime during works.
Technology
How Selective Non-Catalytic Reduction (SNCR) works
SNCR technology (Selective Non-Catalytic Reduction) reduces nitrogen oxides through controlled injection of a commercial urea solution directly into the post-combustion chamber. In the presence of oxygen and at the correct temperature, the ammonia contained in the urea reacts selectively with NOx, converting them into molecular nitrogen and water, according to the reaction:
2 NO + NH₂–CO–NH₂ + ½ O₂
reagisce per dare
2 N₂ + 2 H₂O + CO₂
The reaction takes place within a specific temperature window, typically between 850 and 950 °C. Nozzle positioning, reagent flow rate, and atomization pressure are the parameters that determine system effectiveness and are verified case by case with on-site experimental tests.
Technical data
Process parameters
| Typical NOx reduction efficiency | 30 – 60 % |
|---|---|
| Operating temperature window | 850 – 950 °C |
| Reagent | Commercial urea solution (typically 32.5%) |
| Atomization air pressure | 3 – 5 bar |
What we do
Our SNCR DeNOx systems
We supply complete, integrated systems sized to the client's plant. Every project starts with verification of operating conditions and is developed through to commissioning and fine-tuning.
Turn-key skid-mounted systems
Pre-assembled units built in our workshop, installed and commissioned on site. Compact layout, fast installation.
Urea injection lances
Stainless steel lances with internal-mix air/liquid atomization. Sized and positioned according to combustion chamber geometry.
Urea storage and dosing systems
Tanks, metering pumps, and distribution lines for handling commercial 32.5% urea solution, from the delivery point to the injection lances.
PLC control panels
Automatic dosing proportional to boiler load and stack NOx concentration, with continuous process parameter monitoring.
Retrofits on existing plants
Integration of SNCR systems on boilers and incinerators already in operation, designed to minimize downtime during works.
Spare parts and service
Original spare parts, scheduled maintenance, and technical support on installed plants.
References
Over 10 SNCR systems delivered
Systems designed, supplied and installed for biomass boilers and incineration plants in Italy and Switzerland.
A selection from our project portfolio. Full references available on request.
10+
SNCR systems delivered
Italy · Switzerland · Since 2014
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8 + 8 MWSwitzerland 2020–21
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6,5 MWItaly 2015
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5 MWSwitzerland 2019
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3,2 + 1,2 MW +3.2 MW expansion plannedSwitzerland 2017
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3,5 MWItaly 2017
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1,6 MWSwitzerland 2019
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3,5 MW revampingItaly 2024
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300 t/giornoItaly 2016
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18,7 MWItaly 2025
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10.000 + 4.000 Nm³/hItaly 2022
Process
From the first site visit to post-commissioning support
A single point of contact for the entire project.
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01
Site visit and assessment
Verification of plant operating conditions, process data collection, feasibility assessment.
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02
Engineering
System sizing, nozzle positioning, definition of operating parameters.
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03
Manufacturing
Construction of skid-mounted components, pre-delivery checks and testing.
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04
Installation
On-site assembly with specialized teams, coordination with other plant works.
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05
Commissioning and fine-tuning
System start-up, process parameter adjustment, experimental tests to define the optimal temperature window.
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06
Service
Scheduled maintenance, spare parts supply, long-term technical support.
Company
Ecotherm
Ecotherm Srl has been operating since 2014 in the realization of SNCR systems for the reduction of nitrogen oxides, with a focus on biomass boilers and waste incineration plants.
Our specialization is rooted in over thirty years of family activity in the industrial flue gas treatment sector — a legacy of experience that today is entirely focused on SNCR technology.
We operate in Italy and Switzerland with a direct approach: we design, supply, install, and service our systems through a single point of contact for the entire project lifecycle.
Contact
Let's talk about your plant
Send us a brief description of your plant and your NOx reduction goals — we'll get back to you to discuss the most suitable solution.