How Can Dust Opacity Monitoring System with MRU Instruments Turn Beneficial?
- 504 Views
- Chirag Shah
- 18th October 2021
There has been concerns all across the planet about the consequences of the hydrocarbon combustion and various guidelines have been made to control the same. With new age emission analyzer and combustion gas analyzer, which have optical characteristics to measure the amount of dust or gas, it is possible to have a precise dust opacity monitoring system.
The MRU Instruments – MRU Gas Analyzer can offer accurate opacity checking. While the statistics show that the industry is moving away from coal and toward cleaner alternative sources such as flammable gas and renewables, coal use in the power age is likely to remain at approximately 20% to 30% of total for a long time. Specialists are taking drastic measures since these emissions are hurting the environment and, in any case, causing health problems for people who live far away from the source.
For hundreds of years, smoke emissions from fuel combustion have been a problem around the world, and regulations have been put in place to try to manage and reduce such emissions. The Ringelmann method, developed in the 19th century, compared the colour of smoke to shades of grey printed on a card to determine smoke emissions.
The optical features of stack gases are still used to estimate the amount of smoke or dust in today’s opacity measurement methods.
All combustion processes, including coal and oil-fired power plants, produce smoke and dust as by-products. While it is true that the industry is transitioning away from coal and toward cleaner choices such as natural gas and renewables, coal use in power generation is expected to remain around 20% to 30% of total for the near term.
Emissions are regulated by regulators such as the US Environmental Protection Agency (EPA) and the UK Environment Agency because they are harmful to the environment and create health concerns even for those who live distant from the source (ELV). This is the maximum amount of smoke or dust that can be emitted without triggering legal consequences. Operators of power plants must measure their emissions and report the results of their measurements to ensure compliance.
Measurement of opacity
Particulate matter, or PM, is the term for smoke and dust combined. A visible plume of smoke leaving the stack is one of the most evident symptoms of PM emissions. Because of scattering, absorption, and reflection by the particles, some light is dissipated when it passes through a gas containing smoke and dust. Because the amount of light lost is proportional to the number and size of the particles, it can be used to estimate the PM concentration in the stack.
Opacity, a measure of light attenuation, is used to determine how much light is lost as it passes through the stack. This value is measured and reported directly by an opacity metre. The calculation makes use of a calibration factor that is specific to that installation. In general, only activities that burn coal, oil, or waste products, such as incinerators, are needed to measure opacity and PM. Because natural gas does not contain dust or ash, gas-fired operations do not emit PMs. Many natural gas power plants, on the other hand, use oil as a backup fuel and must nevertheless install a PM or opacity monitor.
Because opacity screens must function day in and day out, consistent quality is critical. The screens are frequently used in extreme situations and are put outside in an elevated position on a stack, where they are exposed to temperature limits. There is also minor development due to the size of stack structures, and the screen should accommodate this relocation. Every opacity screen should be constructed and oriented specifically for the establishment in which it will be used.