在使燃料能完全燃烧的情况下希望空气过剩系数越低越好。但过低可能造成燃烧不完全，而过高将增加了炉内空气量，降低炉子的热效率，对于强制通风或引风，推钢加热炉价格，还将增加动力消耗，烟气中的氧含量过多也将增加对炉管和其他部件的损失。

It is hoped that the higher the air surplus coefficient，推钢加热炉， the better the fuel can be completely burned. But too low may cause incomplete combustion，加热炉， and too high will increase the volume of air in the furnace and reduce the thermal efficiency of the furnace. For forced ventilation or induced draught， it will also increase power c*umption and excessive oxygen content in the flue gas will also increase the loss of furnace tubes and other components.

台车式加热炉的组成包括加热炉本体和余热回收系统。余热回收系统中有一个空气预热器，空气预热器是又由非冷凝式空气预热器和冷凝式空气预热器两段组成。

The trolley heating furnace c*ists of a heater body and a waste heat recovery system. There is an air preheater in the waste heat recovery system. The air preheater is of a non-condensing air preheater and a condensing air preheater.

燃料气的流动速度 燃料气的流动速度与火焰的长短有密切关系，在外混式燃烧器中，燃料气流速过大，会引起脱火；在半预混燃烧器中，推钢加热炉厂家，燃料气流速过小会引起回火。

There is*ose relati*hip between the flow velocity and flow velocity of flame fuel gas fuel gas in the length of the outer mixing burner， fuel gas flow rate is too large， will cause the removal of fire; in the semi premixed burner， fuel gas flow rate is too *all will cause tempering.