As mentioned above, with honeycomb ceramic regenerator, using regenerative combustion technology, the radiant tube exports both ends set regenerator, through the high frequency switching four-way valve, "limit" recovery of high temperature flue gas waste heat, the high temperature of combustion air preheating.Due to the high temperature combustion air flow rate is very high, the entrainment of the radiation tube combustion products backflow, dilute combustion-supporting air, thereby reducing the oxygen volume concentration of reaction area, high temperature and low oxygen combustion.At the same time, can adopt eccentric air vents and other measures, to extend the length of the burning flame.Due to the combustion air at the entrance to form a high-speed stick wall jet, a large number of combustion-supporting air flow along the radiation tube wall, decrease the entrance section of the reaction with fuel air, result in incomplete combustion of part of the fuel.So, on the one hand, can reduce the entry section of the radiant tube wall temperature, is beneficial to uniform the tube wall temperature of the radiant tube, can increase the luminance of the flame on the other hand, to improve their ability of radiation.
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