COKE OVEN OFFTAKE PIPING SYSTEM, ITS USING, COKE FACTORY PLANT, AND METHOD FOR CONTROLLING THE FLOW RATE FROM COKE OVENS

摘要

A coke oven offtake piping system comprises a pipe assembly (10) for convey- ing coke oven gases from a coke oven to a collecting main (14); at least one spraying nozzle (18) in said pipe assembly; and a discharge section (19) with a discharge pipe (20) having a discharge orifice (22, 222). A gate member (24; 124a, 124b; 224; 324; 424) cooperates with the discharge orifice (22; 222) and is movable along the discharge orifice in order to present a closing surface to the extremity thereof, whereby the opening area of said discharge orifice can be varied for controlling the flow rate to the collecting main (14).