the inlet passage may have a width approximately equal to a width of a paper web in a paper making machine the air inlet passage is devoid of water injection the dust collector may include a central vortex chamber and may be defined by an outer wall and an internal guide vane there may be a water injector mounted in the outer wall and injecting water into the central vortex chamber and there may be a discharge outlet of the central vortex chamber connectable to a water and air separator application_number US 12638508 A description fig1 shows in cross section an embodiment of a dust collector and removal system 10 having an extended inlet 12 for dust collection and a volute section 14 for dust removal dust laden air 16 is pulled into an opening 18 of the inlet and passes through a dry generally straight inlet section 20 the section 22 of the inlet has a specific cross sectional area that causes the velocity of the dust laden air passing through the inlet the accelerated dust and air enter the volute section 14 where the fast moving dust laden air is mixed with a water spray and rotated to form a vortex water is injected tangentially by one or more water injectors 24 26 arranged in the volute section an internal vane guide 28 guides the dust laden.