Stationary Source Emissions


Stationary Source Emission Measurement and Monitoring

Dekati has over 30 years of experience in providing PM measurement solutions for stack emission measurements. Today, our measurement solutions are used in wide range of applications from household small-scale combustion units to industrial power plants and beyond. Dekati has complete measurement solutions available for the whole PM emission spectrum from high concentrations typically associated with combustion of solid fuels to low emissions typically associated with combustion of liquid or gaseous fuels. In addition to regular power and/or heat generation units, Dekati® Solutions are widely used to measure industrial emissions from cement and steel industry stacks.

Our selection of measurement solutions for stationary source emission measurements include both real-time and gravimetric detection of particle concentration and particle size distribution. These solutions also work for stationary monitoring and stationary source emission monitoring. Our extensive line of sample conditioning devices enable not only environmental emission measurements but also measurements directly from the combustion zone and before heat exchangers and used flue gas cleaning devices. Dekati solutions cover complete measurements setups for both standardized and research purposes, and for any sample conditions.

Contact our sales, if you’d like to know more about our solutions for stationary source emission measurement and monitoring.

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Factory emissions measurement

Dekati® Solutions for Emission Measurements

  • Emission monitoring and research solutions for factories, industrial plants and power plants such as
    • Coal power plants
    • Biomass energy production
    • Waste incinerators
    • Asphalt and cement plants
    • Steel manufacturing plants
  • Measurements from dry and wet stacks
  • Measurements directly from combustion zone
  • Flue gas cleaning device optimization for ESPs, baghouse filters, wet scrubbers and dry scrubbers
  • PM10 and PM2.5 mass measurements according to ISO23210

Dekati® Instruments for Emission Measurements

  • Complete setups available for a range of measurement needs and sources
  • Real-time particle number, mass, LDSA measurements
  • Real-time and gravimetric particle size distribution
  • Simultaneous measurement of PM10, PM2.5, PM1 and below all the way down to ultrafine particle sizes
  • Options for direct high-temperature measurement or measurement with a dilution system
  • Sample conditioning solutions up to 1200 °C

PM10 and PM2.5 measurement according to ISO23210

ISO standard 23210:2009 defines a standard reference method for simultaneous measurement of PM10 and PM2.5 mass concentrations from stationary emission sources with a two-stage impactor. The method is similar to standards about particle collection on a filter, but instead of a filter an impactor unit is used to collect size classified particles on filters. This method is aimed for low-concentration measurements below 40 mg/m3 defined as 30 minute averages in standard conditions of 273 K, 1013 hPa and dry gas. The measurement method can be used in stack gas measurements of any industry such as combustion, cement or steel production as long as the requirements for the stack gas conditions and PM are fulfilled. The standard may not be used in conditions where the stack gas is saturated with water vapor or when there is a significant fraction of particles above 10 μm. A further limitation of the standard is that it may not be used for the determination of total mass concentration of the dust.

The Dekati® PM10 Impactor model PMS-510 fulfils all requirements set in the standard for the impactor and can therefore be used to make standard PM10 and PM2.5 measurements according to ISO23210. The impactor is made of stainless steel and is a robust solution even for harsh measurement conditions. The system can also be upgraded with an additional PM1 impactor stage which enables additional measurement of PM1 size fraction.

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ESP (Electrostatic precipitator) development with PM measurements

Electrostatic precipitators (ESPs) are used in various industries to clean particulate matter (PM) from flue/process gases. Dekati® PM Measurement Solutions are widely used to reduce these PM emissions while optimizing process operations. Dekati® PM measurement solutions allow direct determination of time and particle size resolved ESP particle removal efficiency. This makes it possible to quickly find the optimal operation parameters for any type of ESP or WESP that maximize PM removal efficiency while minimizing the ESP operation costs. These benefits are achieved through real-time measurement of particle size distribution and concentration before and after the ESP or WESP. In addition to the particle removal efficiency measurements, Dekati offers the only commercially available technology that can be used to directly measure size resolved ESP or WESP charging efficiency. This information can be efficiently used to optimize ESP operation for different fuels and flue gas conditions.

Dekati® real-time PM measurement solutions allow:

  • Measurement of PM size distribution and concentration from any source and any flue gas conditions
  • Optimization of ESP rapping frequency vs. PM emission
  • Optimization of ESP cleaning frequency vs. ESP power consumption
  • Optimization of ESP charging efficiency for different fuels and flue gas conditions
  • Generation of comprehensive data from short-timescale measurements-no need for long term measurement campaigns
  • Minimizing emissions while controlling flue gas cleaning system maintenance and operation costs

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Optimization of combustion process and flue gas cleaning devices

Combustion process where fuel is converted to heat is at the core of every fuel operated power plant. Fuel burning generates particulate matter (PM) and the characteristics of the generated PM depend on the combustion conditions. These characteristics can be used as a marker of the process parameters to optimize the fuel firing process. Dekati® PM Measurement Solutions allow real-time analysis of the flue gas PM directly after the combustion zone to characterize the combustion generated particles and thus to optimize the process for minimal PM generation and therefore heat exchanger fouling.

After the combustion process, the emitted PM is typically removed by flue gas cleaning devices such as electrostatic precipitators, baghouse filters and scrubbers. Dekati® Solutions can be used to determine the PM emissions from the plant, and to optimize the operation and maintenance costs of the cleaning devices while keeping the overall emission at a low level. This optimization is based on real-time PM concentration and size distribution measurement data from Dekati® Instrumentation that allows easy and fast assessment of the effects of different operating parameters on the efficiency of the flue gas treatment systems.

Dekati® solutions for process optimization

  • Full PM measurement setups for any industry
  • Real-time concentration and detailed size distribution measurements
  • Simultaneous measurement of PM10, PM2.5, PM1 and below all the way down to ultrafine particle sizes
  • Options for direct high-temperature measurement or measurement with a dilution system
  • Optimization of the combustion process for varying load conditions and low grade fuels
  • Quickly adjust and optimize flue gas cleaning device power and water consumption vs. PM emission
  • Acquire comprehensive data from short timescale measurements—no need for long term measurement campaigns

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