SNCR technology | Yara International

SNCR NOx reduction systems

Selective non-catalytic reduction (SNCR) is Yara's cost-effective method to reduce nitrogen oxides (NOx) emissions from industrial plants.

If optimum selective non-catalytic reduction (SNCR) process conditions can be created on site, Yara’s SNCR technology can easily reduce NOx emissions by more than 80 %, and in some cases even up to 95 %. Typical uses for selective non-catalytic reduction (SNCR) to reduce the level of nitrogen oxides (NOx) emissions are found in conventional combustion plants that burn coal, biomass and waste.

Businesses wanting to meet emissions standards set either nationally or locally will often choose SNCR as an efficient, low-cost NOx reduction system in:

Cement plants
Waste incinerators
Waste-to-energy plants

Why choose SNCR?

Selective non-catalytic reduction involves a significantly lower investment cost compared with SCR technology.

In many cases, it can also be installed without the need of expensive downtime which is required for installing the catalyst, injection grids and mixers required for SCR. It has a short commissioning stage helping to speed up the process.

Why choose Yara?

Benefit from the experience gained from installing SNCR technology at more than 300 facilities worldwide. Choose Yara’s high performance, safe SNCR systems developed by an expert NOx control team at Yara Environmental Technologies.

Our team of leading experts has a wide knowledge of client processes in cement plants, waste incinerators, waste-to-energy and biomass plants that need to have NOx control.

Get a tailor-made solution designed to ensure your NOx control processes meet legislation needs with Yara’s SNCR system.

Based on your needs we offer

New, complete systems based on standard or customized modules.
Advice and technology to help you optimize, modify or expand your existing SNCR system.
You'll get a 2-year warranty when you buy from Yara.

Preventative maintenance services for SNCR systems

Yara SNCR systems are fully automated and built to operate and perform in tough industry environments. Our robust systems operate as specified and with minimal interruption.

To optimize uptime, and prevent normal wear and tear of components disrupting your processes through unexpected shutdowns, we also offer our SNCR customers an agreed Pre-emptive Maintenance Service package.

This comprises

Pre-emptive maintenance visits
Replacement of consumables and spare parts
System adjustments and optimization

A Pre-emptive Maintenance Service package gives you the advantages of

Prioritized service visits, and priority emergency service
Optimum use of your SNCR system, and maximum uptime
No maintenance service administration, it's all done for you

Spare parts services for SNCR systems

Get standard consumables and spare parts for your SNCR system efficiently, because we keep stock on hand. Ordering direct from Yara ensures you receive the correct component, compatible with your SNCR system, delivered quickly.

You can also choose a spare part package, which contains the expected yearly consumption of "normal wear and tear" components, ensuring even faster and easier access to your necessary parts.

NOx control reagent storage solutions for SNCR systems

We can offer you design, build and upgrade of storage solutions to fit your NOx reduction reagents needs. This can be as part of your SNCR installation, or as a stand-alone storage tank solution.

You can also get an optimization assessment of your current reagent usage, as part of our service offer. If your reagent situation changes, we can recommend and deliver, standardized or customized, NOx reduction reagent storage solutions, and internal site distribution solutions, to your NOx control installations.

NOx reduction reagent storage services include

Upgrades to larger storage capacity
Converting from one reagent solution to another (e.g. Anhydrous Ammonia to Ammonia Solution)
Re-piping of site reagent supply system
On-site dissolving (urea) or dilution installations