Gas analyzers and monitoring systems for fertilizer and nitric acid production sector - Monitoring and Testing

Nitric acid is most commonly produced by Ostwald process. The process converts ammonia to nitric acid in two steps. During the first step ammonia is oxidized to form nitric oxide (NO) and nitrogen dioxide (NO2). During the second step, the nitrogen dioxide that was formed is absorbed in water. This, in turn, forms nitric acid. During this process NOx, NH3 and N2O emissions are produced.

Nitrogen oxides and ammonia are harmful to the environment and toxic to humans. Nitrogen oxides are a group of seven gases and compounds composed of nitrogen and oxygen. The two most common and hazardous nitrogen oxides are nitric oxide and nitrogen dioxide. Ammonia on the other hand is a compound of nitrogen and hydrogen.

Nitrous oxide, commonly called laughing gas, is a strong greenhouse gas that contributes to climate change.

The ability to detect and measure almost any gas (including NOx, NH3 and N2O), combined with the robustness and reliability of the technology, makes Fourier Transform Infrared (FTIR) spectroscopy ideal for the continuous measurement of these emissions.

Learn more about FTIR and continuous emissions monitoring in our free Guide to Emissions Monitoring.

These measurements can be used to control and develop processes and emissions abatement systems. An example of a process that can be developed is the process of NOx reduction, or DeNOx. Through more efficient processes and optimally operating emissions abatement systems harmful emissions and greenhouse gases can be reduced.

Gasmet manufactures portable FTIR gas analyzers and stationary FTIR emissions monitoring systems. An FTIR analyzer works by simultaneously scanning an entire infrared spectrum. Our Calcmet software then calculates the concentrations of each gas in the sample based on the characteristic absorption. All the gases in the sample can be measured simultaneously because the entire infrared spectrum is scanned at once. This allows for very quick multicomponent measurements and for compensation for any cross-interference.

The Continuous Emissions Monitoring System CEMS II e offers TÜV and MCERTS certified solution (QAL1) for a wide range of demanding emission monitoring applications. The CEMS II e system utilizes Fourier Transform Infrared Spectroscopy FTIR technology.

The Gasmet DX4000 can be used when you need a portable gas analyzer solution instead of continuous gas monitoring. It is portable FTIR gas analyzer for applications where multiple gas compounds need to be accurately monitored in hot & humid sample gas. Gasmet DX4000 is the world’s smallest FTIR emissions monitoring system.