M&W ASKETEKNIK
Sampling and process control systems for coal/biomass fired power plants
PFS – Pulverized Fuel Sampler
- Sampling in accordance with standard ISO 9931
- Extracts a pulverized coal or biomass sample for laboratory testing
- Easy connection to the fuel pipe with a Dustless Connection (DC)
- Determination of combustion properties
- Adjustment of fuel distribution
- Commissioning of new mills
Principles of operation
The Pulverized Fuel Sampler (PFS) is a manual sampling device, designed for representative extraction of samples (pulverized coal or biomass) from pneumatic transport pipes. The sampling procedure is in accordance with the international ISO 9931 standard.
General description
The sampling lance is inserted through a Dustless Connection into the pulverized fuel pipe. A multi-point sampler extracts one representative sample from 64 sampling points evenly distributed over the cross-section of a circular pipe.
The sampling gas velocity is maintained at the same level as the gas velocity in the transport pipe all through the sampling period, to ensure an isokinetic sampling. By isokinetically extracting the sample, the particulate flow rate can be determined.
The PFS consists of:
1.1 Dustless Connection (optional).
1.2 Sampling Lance (manually operated).
1.3 High efficiency precipitating cyclone.
1.4 Sample bottle (500 ml plastic container).
1.5 Reinforced vacuum/compressed air hose (L = 2,5 m).
1.6 Control Unit.
1.7 Power supply cable without wall plug (L = 1 m).
Drawing
Technical data
| Application: | Sampling of pulverized fuel from pneumatic transport pipes |
| Standard: | According to ISO 9931 |
| Particle size: | Under 1.5 mm |
| Pipe dimension: | 210 – 1400 mm diameter |
| Sample volume: | Maximum 400 ml |
| Power supply: | 230 V/50Hz or as required |
| Air supply: | Min. 6 bar clean oil-free air |
| Humidity: | 0 – 95% humidity, non-condensing |
| Weight: | |
| Sampling lance: | 5 kg (11 lb) |
| Control Unit | 10 kg (22 lb) |
| Operating temp.: | |
| Pulverized fuel: | Max. 130 C |
| Sampling lance: | Max. 80 C |
| Control Unit: | Max. 60 C |
| Insulation class: | |
| Control Unit: | IP65 (electrical equipment) IP44 (pneumatic equipment) |
| Accessories: | |
| Dustless Connection (DC) | Connection for measuring instruments |
| Dirty Air Pitot (DAP) | Gas velocity measurement |
