The invention discloses an optimized air-
distribution control system for an
industrial furnace. A
combustor is connected with a fuel valve and an air valve connected with a hot air tube, a
flue is connected with the inlet of a
heat exchanger, and the outlet of the
heat exchanger is connected with an induced draft fan set driven by an induced draft speed
governor. A
bypass valve is arranged betweena
cold air tube and the hot air tube, and the
cold air tube is connected with an air outlet of an
air blower set driven by an
air blast speed
governor. An outlet of a sampling tube is connected withan
flue gas
oxygen concentration analyzer; a
signal output end of the
flue gas
oxygen concentration analyzer is connected with a first
signal input end of a controller, a second
signal output end of the controller is connected with a
control signal input end of the induced draft speed
governor, a furnace pressure duct is connected with a pressure
transmitter a signal output end of which is connected with the second signal input end of the controller, the first signal output end of the controller is connected with the
control signal input end of the
air blast speed governor, and a communicationport of the controller is connected with a human-computer interface. The invention controls the rotate speed of the induced draft fan set and the
air blower set driven by the speed governors throughdetecting the pressure and
flue gas oxygen concentration values in the furnace on line so that the furnace is in the optimized air-distribution state all the time.