Heating system for regenerative coke ovens

A heating system for regenerative coke oven batteries that can be heated with rich gas and/or lean gas or mixed gas, comprising;

• a base wall, an upper wall and side walls defining at least one cooperating pair of vertical flues, said sidewalls including a short communicating wall dividing said cooperating pair of vertical flues and extending from said base wall to a location spaced from said upper wall and a continuous communicating wall extending from said base wall to said upper wall, each of said short communicating wall and said continuous communicating wall defining a hollow communicating channel, each said hollow communicating channel including discharge openings at two different levels above said base wall, said discharge openings of said continuous communicating wall leading only to a first flue of said cooperating pair of vertical flues and said discharge openings of said short communicating wall leading only to a second flue of said cooperating pair of vertical flues;
• flue base communicating channel means formed in said flue base wall defining a channel with a flue base discharge opening connected to said first flue,
• regenerators for preheating air, said regenerators being subdivided in a longitudinal direction of said heating system to provide a first regenerator part with a first regenerator part connection and a second regenerator part with a second regenerator part connection, said first regenerator part connection being connected to said flue base communicating channel means and said second regenerator part connection being connected to said hollow communicating channel of said continuous communicating wall, allowing adjustment of amounts of air therebetween;
• pusher block means provided at each of said discharge openings of said one of said hollow communicating channels for regulating gas flow therethrough;
• and
• a base opening provided in said short communicating wall between the cooperating pair of vertical flues for providing communication between said second flue and said first flue adjacent said base wall.