煤氧喷枪中心氧管参数之间的关系

Relation of Parameters for Inner Oxygen Tube of Coal Oxygen Injection Lance

利用等截面管中氧气射流理论公式对影响煤氧喷枪中心氧管氧气流动的主要参数进行计算。计算结果表明：氧气出口马赫数及氧气入口压力与氧管内径、氧气流量、炉内操作压力以及氧气入口温度等因素有关。同时推出计算氧气出口马赫数和氧气入口压力的显式函数公式：Ｍ２＝Ｑ０．８９６３９Ｔ０．４２４８５１ｐ０．８７３３４３Ｄ１．８２７１２×４．３４００７×１０－８ｐ１＝Ｔ０．４９１７９１ｐ０．１３６８１３Ｌ０．３０６４７Ｑ０．８５３５１Δ０．０８０３４Ｄ２．０７７９２×４．

The key parameters influencing the oxygen flow in the inner tube of the coal oxygen injection lance have been calculated by applying the theoretical jet formulas for the oxygen flow in a tube of equal diameter. The results of the calculation show: the exit Mach number of oxygen and pressure of inlet oxygen are depending on inner diameter of the tube, oxygen flow, furnace pressure and temperature of inlet oxygen. The explicit functional formulas obtained for calculating the exit Mach number of the oxygen and the pressure of the inlet oxygen are as follows: M 2= Q 0.896 39 T 0.424 85 1 p 0.873 34 3 D 1.827 12 ×4.340 07×10 -8 p 1= T 0.491 79 1 p 0.136 81 3 L 0.306 47 Q 0.853 51 Δ 0.080 34 D 2.077 92 ×4.606 37×10 -8