Choosing between SNCR and SCR technology when building a new NOx control system

If you need to reduce NOx emissions in an existing plant where there is currently no NOx control measures installed, Yara can help you to evaluate the best possible technology with regards to your

  • combustion process, 
  • operating parameters, 
  • NOx levels in flue gas, 
  • NOx cap levels to be achieved, 

Along with evaluating your site options for the type of NOx reduction reagent you can handle most effectively, Yara can help you make the right informed decisions on whether our SNCR, Hybrid or SCR system is the best technology to suit your NOx reduction needs.

Upgrading a NOx control system to optimize costs or meet new legislation

Your existing NOx reduction systems may be coming more costly to run, or can no longer meet the legal requirements needed by your operation. This challenge can be overcome by the possibility of upgrading your current NOx control system to bring it more in line with today’s Clean Air Act legislation and technology developments, making it easier to manage and more cost effective to run.

Yara, a world leader in SNCR installations, is able to assess and measure your current systems ability to reduce NOx and then recommend how your existing system can be upgraded.

Optimizing a NOx control system to reduce running costs and/or meet new legislation

As you run your NOx control system in your daily operations, you may see that your operating costs are increasing. Something can be done to prevent this. It may be due to high NOx reducing reagent consumption as a result of inefficient flue gas treatment, or that your maintenance frequency has increased. Yara can help you to evaluate your current system and recommend options for optimization to reduce running costs and create a more efficient system.

Ed Wells
Ed Wells
Director of Sales, Air1

Choosing between SNCR and SCR technology when building a new NOx control system

Secondary Emission Control Technology used in Power Plants and Utilities to control emissions of Nitrogen Oxides (NOx) can be Selective Non Catalytic Reduction (SNCR) or Selective Catalytic Reduction (SCR). SNCR and SCR are both common technologies used for NOx control. However, it is not an easy choice to know which one to choose.

If you need to reduce NOx emissions in an existing plant where there is currently no NOx control measures installed, Yara can help you to evaluate the best possible technique with regards to combustion process, operating parameters, NOx levels in flue gas, NOx cap levels to be achieved, etc.

Based on your process data, our technology experts are able to design, build and install a tailor-made SNCR or SNCR/SCR hybrid system for you, also considering CAPEX / OPEX, as well as the ideal choice of reagent.

As a world leader with over 180 installations Yara Environmental Technologies is also the ideal partner for turn-key plants requiring an SNCR or SNCR/SCR hybrid system.

Please contact our NOxCare expert for a system offer.

Learn more about the different types of NOxCare reagents used in SNCR and SCR systems, as well as their specific storage and handling.

Optimizing a NOx control system to reduce running costs and/or meet new legislation

As you run your NOx control system in your daily operations, you may see that your operating costs are increasing. Something can be done to prevent this. It can be due to high NOx reducing reagent consumption as a result of inefficient flue gas treatment or that the maintenance frequency has increased.

No matter what makes you confront your existing NOx treatment strategy, it is possible to solve these challenges.

Combustion, Flue Gas and Emission Measurement

Our experts will evaluate your system on site and analyze your current combustion and NOx abatement status. A mobile trial unit allows them to:

  • Collate information on the combustion process
  • Determine flue gas and emission conditions
  • Temporarily apply corrective measures to your existing NOx treatment operation to practically determine the best strategy and set-up to meet your demands for reliably higher abatement results and lower operating cost

Based on various simulations and practical findings, we are able to optimize your existing system. NOx emission levels will be reliably reduced and reduction levels will even be guaranteed. Consumption of NOx control reagents can be optimized accordingly to ensure maximum performance without over-injection, thus reducing reagent costs.

If you are interested in a practical check for NOx reduction optimization, please get in touch with our NOx reduction technology experts.

Read more information on SNCR and SCR systems.

Read more information on NOx Reduction reagents: Anhydrous Ammonia, Ammonia solution and Urea

Upgrading a NOx control system to optimize costs or meet new legislation

As new standards for reducing NOx emissions have to be met, your current NOx reducing measures may not be able to meet the legislation changes.

Perhaps you have installed equipment a number of years ago, which is now starting to prevent cost efficiencies in the use of your reagent, or spare parts are increasingly difficult to source or are expensive. This challenge can be overcome by the possibility of upgrading your current system to bring it more in line with today’s technology and making it easier to manage.

Our experts are able to assess and measure your current systems ability to reduce NOx and then recommend how your existing system can be upgraded.

Upgrading your system can involve:

  • Upgrading original equipment parts to optimize reagent flow
  • Updating software to improve functionality of the system
  • Electronic systems that are no longer supported by the original manufacturer can be changed to new, up to date, serviceable technology

If you are interested in a practical check for NOx reduction upgrade, please get in touch with our NOx reduction technology experts.

Yara Porsgrunn

Yara Plants/Terminals in US/Canada

  • Bayonne, NJ
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