Method for the controlled operation of a regeneratively heated industrial furnace, control device and industrial furnace

摘要

Method for the controlled operation of a regeneratively heated industrial furnace (100) with a furnace chamber (10), in particular with a glass melting tank, comprising the steps: - injecting fuel into the furnace chamber (10) via at least one fuel injector (20, 20 ') ), which is designed for the injection of fuel, in particular practically without combustion air, - by means of a at least one fuel injector (20, 20 ') associated left regenerator (50) periodically alternating leadership of one hand combustion air (VB) to the furnace chamber (10 ) in a first period and on the other hand exhaust (AG) from the furnace chamber (10) in a second period separately from the fuel, and - by means of the at least one fuel injector (20, 20 ') associated right regenerator (50') periodically alternating Guiding on the one hand exhaust (AG) from the furnace chamber (10) in the first period and on the other hand combustion air (VB) to the furnace chamber (10) in the second en period duration, wherein - the left regenerator (50) and the right regenerator (50 ') are designed for the regenerative storage of heat from the exhaust gas and heat to the combustion air, wherein - a supply of the combustion air is controlled automatically by means of a control loop, and - by means of an exhaust gas analyzer, in particular a lambda probe, in particular a zirconium dioxide, as a measuring element in the left and right regenerator an oxygen content for directly determining an excess air coefficient (λ) of the exhaust gas, in particular the combustion air, is measured - the excess air coefficient (λ) as Process value of the measured oxygen content is determined directly, characterized in that - the process value of the excess air ratio λ controller (Rλ) of the control loop as the actual value (λIST) against a target value (λSOLL) of excess air to compensate for a from actual value (λIST) and setpoint (λSOLL) Regelabweic formed hung (Δλ), wherein - from the process value of the excess air coefficient (λ) an occurrence of false air is determined, and - occurring false air is displayed in the context of a false air indication, wherein ...