GB767653A - Improvements relating to the reversal of regenerative horizontal coke oven batteries - Google Patents

Abstract

767,653. Reversible generators for coke ovens. KOPPERS GES., H. March 30, 1953 [April 2, 1952], No. 8765/53. Class 64(1) During the reversal of regenerative horizontal coke-oven batteries, the supply of lean combustion gas to one set of regenerators is cut off, and waste gas is diverted from the chimney to those regenerators to displace the combustion gas left in them into the combustion spaces of the ovens, where it is burnt, before the reversal sequence is completed. Reversing :valves such as 13 and 17 respectively control the supply of lean gas and air to pairs of regenerators connected to opposite ends of the ovens 1, and reversing valves such as 16a control the flow of waste gas from the regenerators to flues 4, 5 These flues are interconnected by flues 6, 7 and communicate with chimney outlet 8. Upon reversal after the gas and air have been supplied to the end 3 of the ovens 1 and waste gas withdrawn at the end 2. the waste gas valves 16a first begin to open. the gas valves 13 and a' valve 29 in the flue 4 are closed, and a fan 30 is started to impel the waste gas from the flue 4 to the flue 5 and thence through the valves 16a into the regenerators at the end 3. to drive the gas and air from the regenerators at that end into the combustion spaces of the ovens. Subsequently, the fan 30 is stopped and a valve 29a between the flues 5 and 7 is opened. At the end 3, the air valves 17 are closed, and opening of the waste gas valves 16a is completed; at the end 4 the waste gas valves are closed and the lean gas and air valves are. opened. At the next reversal, the fan 30a is started and the valve 29a is closed, so that the waste gas is impelled from the flue 5 to the flue 4. The valves are operated by the engagement of levers 19 with clamps on rods, ropes or chains such as 12, 15 guided by pulleys or bell-cranks and actuated by a reversing machine.