RTS Africa, distributor of Neo Monitors LaserGas analysers, announces new technological developments.
Neo Monitors LaserGas analysers offer a reliable and robust method of measuring the concentration of a single gas present in a mix of other gases and dust. This capability is almost impossible with conventional gas-measuring technologies which use probes inserted into the gas stream.
“In the day-to-day operation of industry, vast quantities of fossil fuel are burned,” explains Ian Fraser, Managing Director of RTS Africa Engineering. “If the combustion process is inefficient, the result is wastage and pollution,” adding that the answer lies in finding a really effective method of monitoring certain gases in combustion emission streams.
Instead of a probe, Neo Monitors LaserGas analysers use a laser beam which is transmitted through the gas in the flue or duct. The wavelength of the analyser is tuned to recognise a specific gas and to ignore all others. This cuts out cross-interference from other gases, dust or water vapour. The advantage of this instrument is that the electronics are mounted on the outside of the flue or duct and thus are not affected by the heat or corrosive qualities of the gas stream. LaserGas analysers can operate successfully in temperatures as high as 1500°C and will deliver accurate readings even with 90% signal attenuation.
Highly reliable LaserGas analysers have application in a diverse range of industries including petrochemicals, steel production, power generation and cement manufacture among many others. Most conventional industrial gases as well as dust and water vapour can be monitored with one of Neo Monitors’ analyser models.
Neo Monitors LaserGas analysers are based on tunable diode laser absorption spectroscopy (TDLAS), a technology which has gained wide acceptance in the industrial analyser market place in recent years. Their exceptional performance, selectivity, fast response-time and ability to measure selected gas components directly in the process stream offer unique advantages to the process engineer.
More recently in industry, there has been requirement for in-situ, real-time multi-component gas monitoring. In 2016, NEO Monitors research division developed the LaserGas™ iQ², which allows for the measurement of four gases (oxygen (O2), carbon monoxide (CO), methane (CH4), H2O) and temperature with just one device. This cutting-edge instrument delivers vast benefits and reduced cost for industries requiring the most accurate analysis of processes. Previous analysers have at the most been able to measure two components in a given process.
This capability will be of particular application in combustion control where the simultaneous monitoring of O2 and CO concentrations is essential to optimise combustion efficiencies. A further application could for example be in a sulphur recovery process: the simultaneous monitoring of hydrogen sulphide and sulphur dioxide in flue gases would allow for the optimised recovery efficiency and the limitation of sulphur dioxide emissions.
“One of the most significant new developments from our side is that we can now measure some of the most problematic gases in combustion such as sulfur dioxide (SO2) and nitric oxide (NO) and nitrogen dioxide (NO2) – which we could not do before. From an environmental emissions control perspective, that is very important,” says Fraser.
“In general, regarding Neo Monitors, whether there is a need to monitor the level of the single gas or multiple gases in a gas flow, Neo Monitors LaserGas analysers are able to make a vital contribution to both improved, more cost-effective and efficient production processes; and to a cleaner environment by limiting the effects of dust and chemical contamination,” Fraser concludes.