Fabric filter with gas inlet geometry and method

A fabric filter apparatus having a prismatic housing defining a dusty gas section with an elongate horizontal inlet thereto and a clean gas section with an outlet therefrom, a porting plate mounted in the housing separating the dusty gas section from the clean gas section and a substantially circular array of fabric filter bags depending therefrom, the inlet being adjacent the lowermost end of the filter bags;

• said housing further including a generation/distribution means to generate pulses of back flushing gas and distribute them periodically into the open upper ends of the fabric filter bags through respective ports in the porting plate, characterized in that respective dusty gas flow ducts are located in each of two corners of the prismatic housing at opposed lateral ends of the inlet, said ducts being in fluid communication with the inlet so as to direct a portion of the dusty gas inflowing through the inlet upwardly of the housing to exit each duct at a level intermediate the inlet and the porting plate.