Continuous mercury emission monitoring
Mercury can be harmful to humans and other living organisms when released to the atmosphere and water via, for example, industrial emissions. is therefore vital, which means that sources of mercury pollution, like industrial plants, should monitor their Hg emissions on a continuous basis. Continuous mercury monitoring is the most efficient way to prevent occupational and environmental hazards caused by airborne Hg.
Measuring mercury continuously can be tricky since mercury exists in many forms. Most continuous mercury measurement methods are based on measuring elemental mercury (Hg0). This means that all Hg compounds, such as HgCl2, need to be converted to elemental mercury. That is why special characteristics must be taken into account when designing systems for mercury measurements.
The technology we at Gasmet use to measure the level of traces of mercury is called CVAF (cold vapor atomic fluorescence spectrometry). The technique is very selective and highly sensitive, which ensures accurate measurement of extremely low mercury levels.
Our technology is also future-proof, as it enables the world’s lowest EN 15267 certified range. This means that the technology is ready for stricter emission limit values in the future.
Dioxin and furan emission monitoring
Dioxins, furans, and other persistent organic pollutants (POPs) can be harmful to living organisms. Since these compounds build up in animal fat tissues, they travel through the food chain and end up in human bodies. Exposure to these compounds can lead to serious health effects, like cancer.
Dioxins and furans are by-products of incineration processes and originate from waste incineration or metallurgical processes, for example. Therefore, monitoring dioxin and furan emissions is an important task for industrial plant owners.
Effective dioxin monitoring requires that the sampling period is long enough, preferably two weeks or longer. Short-term monitoring (e.g. 8-hour sampling periods) fails to take the full operational time of a plant into consideration, which affects the results.
Our solution uses isokinetic sampling to reach reliable results. The idea is to sample at the same velocity as the gas stream so that the particulates will not miss the probe, which could potentially impact the results.
Customer case: Reliable dioxin monitoring for Eco-research
Continuous monitoring of other gases
Continuous emission monitoring systems are generally used to simultaneously measure 16 gases: water H2O, Carbon Dioxide CO2, Carbon Monoxide CO, Nitrous Oxide N2O, Nitric Oxide NO, Nitrogen Dioxide NO2, Sulfur Dioxide SO2, Hydrogen Chloride HCl, Hydrogen Fluoride HF, Ammonia NH3, Methane CH4, Ethane C2H6, Propane C3H8, Ethylene C2H4, Hexane C6H14, and Formaldehyde CH2O.
The measurements of these gas pollutants must be taken in accordance with the relevant local environmental regulations. In many countries, emission measuring technology must be tested for suitability; for example, in Europe, in accordance with EN 15267.
One of the most frequently used technologies for gas emission measurements is FTIR, which stands for Fourier Transform Infrared Spectroscopy. It is a powerful gas measurement technology for the simultaneous measurement of multiple gases. All of the gases in the sample can be measured simultaneously because the entire infrared spectrum is scanned at once.
The great advantage of the FTIR technology is its adaptability as requirements tighten. Quick changes to measurement ranges and additions to the list of measured gases are easily done. New gases and gas ranges can be added to the analysis at any time without any changes to the hardware. This can be done by the users themselves.
Raw gas measurements
Raw gases are untreated flue gases that have not passed through an emission control technology system. These compounds are generally measured for the sake of process control and warranty tracking.
Typically, only a few components are measured, but Fourier transform infrared spectroscopy FTIR technology allows the measurement of all components.
Read about our solutions for raw gas measurements.
Carbon capture and storage
Greenhouse gases (GHGs) such as carbon dioxide, methane, and nitrous oxide pose an enormous threat to the environment. At Gasmet, we realize the crucial role we play in the global effort to mitigate climate change and preserve nature by providing high-tech gas analysis tools for industrial operators as well as researchers and research groups.
Carbon Capture and Storage (CCS) is an emerging method of reducing greenhouse gas (GHG) emissions in power plants. In a process called ‘scrubbing’, carbon dioxide emissions can be absorbed into chemical solvents consisting of amines or carbonates. Scrubbing is a well-established method of carbon capture, with virtually every commercial CO2 capture plant in operation using this process.
Read about our solutions for Carbon Capture and Storage