Self-replenishing seal for the gas offtake piping of a coke oven and sealing method

摘要

A self-replenishing seal for the gas offtake piping of a coke oven and sealing method. The collector main with which the piping communicates has a trough containing a body of liquid. The end of the piping extends into the liquid to provide a seal which permits relative movement. The trough is located under a nozzle which supplies flushing liquor to the main. Flushing liquor from the nozzle automatically replenishes liquid lost from the trough.