method and device of a rundzellen - heissgas - rohrfilterkoerper filter for system baukastenbauweise, combined with waermeverwertung as steam or hot water boilers

摘要

Filter for hot gases comprises circular cells each constituting a standard component; the components are assembled into a unit which also acts as a waste heat recovery boiler. The filler supports are pref. of steel, heat-resistant steel, very high temp. resistant steel, in the form of perforated plates, coarsely sintered plate or rods; ceramic filter supports may also be used. The supports carry the filtering medium, which may be alloyed mineral wool, non-woven and wrapped around the supports. A pref. mineral wool is based on basalt, without dolomite and contg. kaolin, Al oxides, graphite, Ni oxides, W oxides as additives. The mixt. is ground to 1-3 mm melted at 1550 degrees C using CaO as flux. This is then conventionally blown to produce filaments 5-8 mu thick. The filter cloths may be sprayed with phenolic resin.