If you choose SCR technology, the choice of reagent is essential for the optimal performance of your NOx treatment.
Yara has produced and supplied reducing agents to its customers, through its NOxCare range, for more than twenty years. Our unique network of production sites offers security of supply, ensuring both quality and reliability. Our factories deliver urea or ammonia for NOx reduction nationwide.
Yara has provided reducing agents and solutions to SCR system operators around the world for almost twenty years. Yara brings you its expertise and can follow you in all stages of the implementation of an SCR system.
When you use your SCR system, it is very important to avoid the use of contaminated reagent. Contaminated reagent can deactivate the catalyst, therefore, it is important to make sure you use a good quality reagent, delivered and stored correctly. Deactivated catalysts can lead to premature and costly replacement of your SCR system which reduces NOx (nitrogenoxides). The NOxCare range provides products that have been developed to ensure compatibility with all SCR catalysts, and we control our reagents' attributes through our quality system. All our production sites are ISO 9001, 14001 and 18001 certified.
To optimise their operation, SCR systems require a uniform distribution of ammonia and NOx in the flue gas stream. An uneven distribution of gas can lead to a reduction in NOx that is not sufficient and a significant ammonia slip occurs. It is also important to determine the correct dosage of the reducing agent for all possible configurations of the process. Typically, all future operating configurations are known prior to the design and development of your SCR system.
Ammonia slip is an industry term that describes the passage of ammonia through the SCR catalyst without reacting with the NOx gas. This can happen if:
Ammonia slip brings SCR unnecessary costs and is not good for the environment. With Yara’s expertise, we can ensure Ammonia slip is prevented.
Our reagents for reducing NOx, marketed under the brand NOxCare, are of the highest quality. The vast majority of our ammonia is produced from natural gas which is considered a cleaner process. We deliver the reducing agent of your choice from our network of plants, giving you the assurance of a reliable supply. Choosing Yara is a guarantee of both reliability and quality.
The choice of the reducing agent, the dosage and the injection method have a significant economic impact on the cost of your SCR operations. Our experts will advise you and provide appropriate technical support to ensure the cost efficient operation of your SCR installation. It is important to precisely calculate and adjust the injection and flow properly, so that only the necessary amount of reducing agent is used. Costs of ammonia and urea reagents can be optimised with our help and information.
To learn how to use and optimise your SCR system by using the right reagent: contact one of our experts.
When you choose a technology to reduce NOx emissions, the feasibility and cost of SNCR technology must also be considered. The investment cost of an SNCR system is much lower than that of a complete SCR system and its effectiveness may be sufficient for your needs.
Learn more about Yara's SNCR systems to reduce NOx emissions.