Dust and ash collection devices typically located beneath Electrostatic Precipitator and baghouse compartments, below heat recovery units on boilers, and in various dust collection areas in chemical processes They are conical or trapezoidal in cross-section and taper to a collection duct at the bottom
A hopper is a large cone-shaped device into which substances such as grain, coal, or animal food can be put and from which they can be released when required. American mathematician and computer programmer. Noted for her development of programming languages, especially COBOL, she is credited with inventing the first compiler. a large funnel (1)
A chute, box, or receptacle, usually funnel-shaped with an opening at the lower part, for delivering or feeding any material, as to a machine; as, the wooden box with its trough through which grain passes into a mill by joining or shaking, or a funnel through which fuel passes into a furnace, or coal, etc