GRAINY FILTER Russian patent published in 1998 - IPC

FIELD: gas filtration. SUBSTANCE: filter is designed for cleaning dusty gases, in particular, to remove dust from building material enterprises. Structure of device also allows utilizing heat of gases being cleaned. Filter makes possible cleaning polluted gases to be increased while reducing operating costs owing to maintaining wet state of grainy material that favor more active dust sticking and creation of two-layer attachment with coarse and fine grains. The latter provide retarded growth of aerodynamic resistance and increase in duration of stationary mode of its operation in the device. Increase in the gas heat utilization efficacy is attained when using louver grilles as heat- exchange surface along with pipes immersed into layer connecting louver hollows. EFFECT: increased heat carrier temperature at filter outlet. 3 cl, 4 dwg