ADS – Thiết bi lấy mẫu bụi tự động

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.

The ADS consists essentially of a heated miniature cyclone through which a sample of flue gas is continuously drawn by an ejector, operated by the suction in the flue itself. A detachable glass container, secured to the bottom of the cyclone, receives the dust, which is separated out. It builds up in layers so that it is quite easy for the boiler operator to observe the rate accumulation and to make notes of any perceptible change in colour of the ash e.g. due to carry-over of unburned carbon.

Once the ADS is set for isokinetic sampling of dust from a suitable selected point in the gas stream, it continues to operate isokinetically. It operates with a suction velocity at the nozzle equal to gas velocity past it, irrespective of variations in the main gas flow resulting from adjustment of flue gas suction.