Cross over duct for heating walls of a coke oven or coke oven battery

A coke oven battery, comprising:

• an oven floor;
• a first heating wall including a first flue;
• a second heating wall including a second flue, said second heating wall spaced apart from said first heating wall forming a coke oven therebetween;
• and,
• a cross over duct, including:
• a passageway disposed therein;
• a first aperture open to said passageway;
• and,
• a second aperture open to said passageway,
• wherein said first aperture is in communication with said first flue and said second aperture is in communication with said second flue.

In a coke oven having a first heating wall and a second heating wall, a cross over duct arranged to fluidly connect said first heating wall and said second heating wall, the cross over duct, comprising:

• a first section having an external surface and an internal surface, said first section having a channel disposed therein, said channel terminated by a first aperture disposed on said internal surface and a second aperture disposed on said internal surface;
• and,
• a second section having an external surface and an internal surface, said second section having a channel disposed therein, said channel terminated by a first aperture disposed on said internal surface and a second aperture disposed on said internal surface;
• wherein said channel of said first section and said channel of said section form a passageway, said passageway in fluid communication with said first heating wall and said second heating wall.