Heating system for regenerative coke oven batteries

A heating system for a regenerative coke oven battery having a plurality of coke oven chambers separated by heating walls and a plurality of regenerators for preheating air and cooling hot waste gases, comprising:

• said heating walls having a plurality of spaced heating doors extending upwardly therein and each regenerator extending across an entire length of each coke oven chamber;
• said heating ducts of one heating wall grouped into groups of four heating ducts each with two adjacent pairs of adjacent heating ducts in each group;
• a first binder wall between adjacent ducts in each pair, said first binder wall extending transversely to the length of each coke oven chamber and having a width which is stepped down a plurality of times in the direction of the length of each coke oven chamber from a bottom to a top of said first binder wall;
• a second binder wall between adjacent pairs of heating ducts extending transversely of the length of each coke oven chamber;
• each first binder wall having a binder duct extending therein and connected with each adjacent heating duct by vertically spaced discharge slots so that gas flows in the same direction in each adjacent heating duct of each pair and in opposite directions in the two adjacent pairs, each binder duct being connected to a regenerator and being stepped down in width a plurality of times in the direction of the length of each coke oven chamber from a bottom to a top of each binder duct;
• connection means connecting the tops of the four heating ducts in each group over an upper horizontal four flue duct extending in the length direction of each coke oven chamber;
• said first and second binder walls alternating along said heating wall;
• and
• at least one rich gas supply nozzle at a lower end of each heating duct;
• said binder ducts being provided only in those first binder walls by which two adjacent heating ducts having a flow of gas in the same direction are separated.