Operation of the bag chamber filter units
3D-drawing
The flue gas coming from the suction point is drawn into the flue gas duct. Course dust particles are deposited into the lower part of the housing resulting from the change of direction. The gas charged with dust ends up in the filter housing. The filter hoses, which are secured over supporting cages, are subject to a flow of air from outside. The dust in the gas is then held back on the outside of the hoses. The cleaned air is then drawn through the hoses into the clean area and from there via ventilators into the atmosphere.
The pulses of compressed air, used for de-dusting the row of bag filters, ensue from the use of diaphragm valves. Together with each of the filter modules there is a pressure tank with diaphragm valves, control valves and piping. The de-dusting air pulse reaches the inner part of the bag through the blast pipe via jet injectors.
The rows of hoses are de-dusted by short sharp pulses of compressed which are controlled electrically. The cycle times and interval times are variable and can be adjusted to the operating conditions. The pulse duration is calculated in such a way that the filter surfaces are adequately de-dusted.
The removed dust falls from the filter surfaces into the filter sump or into a silo.