SCR (Selective Catalytic Reduction) uses a catalyst to achieve up to 90% NOx reduction, while SNCR (Selective Non-Catalytic Reduction) operates without a catalyst, achieving 30-50% reduction. SCR is more effective but has higher costs.

SCR reduces NOx by injecting ammonia into flue gas in the presence of a catalyst, converting NOx into nitrogen and water. SNCR injects urea or ammonia into high-temperature flue gas, reacting without a catalyst to lower emissions.

SCR systems offer high-efficiency NOx reduction (up to 90%), making them suitable for power plants and large industrial boilers. They ensure compliance with strict air pollution control regulations.

Choose SNCR if you need a cost-effective solution for moderate NOx reduction, especially in industrial boilers, waste incineration, or cement kilns. It is ideal for projects with limited budgets and less stringent emission standards.

Power generation, refineries, waste-to-energy plants, and chemical plants benefit greatly from SCR, where achieving high levels of NOx reduction is essential for meeting environmental regulations.

Yes, SNCR is often used in smaller industrial boilers and incinerators due to its lower initial costs and simpler design, making it ideal for businesses seeking moderate emission control solutions.

SCR systems are generally more expensive than SNCR due to the catalyst requirement and complex installation. Costs vary depending on the size and scope of the project but are justified by their high efficiency in NOx reduction.

SCR systems require regular maintenance of the catalyst to ensure efficiency, while SNCR systems are simpler, with lower maintenance needs. Maintenance for both is essential to maintain optimal air pollution control.

Yes, a combined SNCR/SCR system can provide a balance between cost and efficiency. This approach is useful in cases where high NOx reduction is needed but cost considerations are also important.

Both technologies help industries comply with NOx emission limits set by environmental agencies. By reducing nitrogen oxides, they help businesses avoid penalties and contribute to cleaner air quality standards.