M&W ASKETEKNIK
Sampling and process control systems for coal/biomass fired power plants
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Before Combustion
We have equipped many power plants with sampling systems, which takes a representative sample of the raw coal or biomass before it is transported to the boiler. The raw coal or biomass is blown in transport pipes, from the mill to the boiler. In the transport pipes, the gas velocity is measures with the DAP (Dirty Air Pitot) and the flow of coal or biomass is measured with a PFS (Pulverized Fuel Sampler).The mentioned instruments are inserted into the material stream through a DC (Dustless Connection), which is mounted on the side of the circular transport tubes.
The instruments come in various versions along with a range of tools.
RSS – Representative Sampling System
The basic purpose of sampling is to collect a manageable mass of material which is representative of the total mass of material from which…
DC & DC-SL – Dustless Connection
The Dustless Connection is inserted into the mounting socket on the pulverized fuel pipe. Compressed air is connected to the DC …
PFS-A-SL – Pulverized Fuel Sampler Automatic Snap Lock
The Pulverized Fuel Sampler Automatic with Snap Lock (PFS-A-SL) is an automatic sampling device, designed for representative extraction …
PFS – Pulverized Fuel Sampler
The Pulverized Fuel Sampler (PFS) is a manual sampling device, designed for representative extraction of samples …
DAP-BL-SL – Dirty Air Pitot with Bluetooth, Laser & Snap Lock
The Dirty Air Pitot with Bluetooth, Laser and Snap Lock (DAP-BL-SL) is a portable instrument designed to measure the temperature and flow velocity…
DAP-SL – Dirty Air Pitot with Snap Lock
The DAP-RD-SL is a portable instrument for measuring temperature and gas velocity/differential pressure in pneumatic transport pipes of pulverized…
ATD – Automatic Trimming Damper
ATD is used to adjust the flow of pulverized coal and bio fuel in feeder pipes between mills and burners. The ATD is flanged into each pulverized fuel feeder …
Tools – Welding Guide & Eccentricity Tester
In order to fix the Dustless Connection to the feeder pipe a pipe socket with female thread is required…..
ABD – Automatic Butterfly Damper
The Automatic Butterfly Damper (ABD) is used to adjust the flow of pulverized coal and bio fuel in feeder pipes between mills and burners…..
After Combustion
The fly ash is analyzed for residual coal; this gives an indication on how well the combustion is. The RCA (Residual Carbon Analyzer) measures the percentage of residual coal online, which preferably is around 4% in order to be utilized as filler in asphalt and cement.
Several power plants prefer to extract a representative sample of fly ash from the process stream, that is tested in a laboratory. This sampling is done by M&W’s instruments FAS (Fly Ash Sampler) and/or ADS (Automatic Dust Sampler).
ADS – Automatic Dust Sampler
The ADS is designed to collect dust samples from flue gas and should be permanently fitted at a suitable position on the flue gas duct. ….
FAS – Fly Ash Sampler
The FAS is an automatic sampling device, used for collecting dust samples in dust transport pipes, where the media is conveyed by pneumatic transport….
RCA-IR – Residual Carbon Analyser Infrared
The Residual Carbon Analyser Infrared (RCA-IR) provides the operators with vital real time information about the combustion efficiency through ….
RCA-MI – Residual Carbon Analyser Microwave
The Residual Carbon Analyser Microwave (RCA-MI) provides the operators with vital real time information about the combustion efficiency through ….