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蓄热式燃烧技术中,炉压控制和换向时造成的炉压波动是一个非常重要的问题。根据模化理论,发现在各个流量工况下,各段内的压力均可以通过改变各段的鼓风量和排烟量来调节,控制尾部烟道排烟是最佳的控制方法。当加热段段内集中换向时,各段压力波动幅度平均在3~5 Pa;换向周期中,压力最低点均出现在内环鼓风,外环抽风的工况下,而压力最高点则出现在第2加热段第二次换向的过程中;炉压总体波动不大,对加热炉安全运行影响不大。如采用单个烧嘴时序换向,则其对炉压的影响可以降到最低。
Regenerative combustion technology, furnace pressure control and commutation caused by fluctuations in furnace pressure is a very important issue. According to the modeling theory, it is found that under each flow condition, the pressure in each section can be adjusted by changing the blast volume and exhaust volume of each section. Controlling the tail flue exhaust is the best control method. When the heating section of paragraph commutation, the average pressure fluctuation range of each paragraph 3 ~ 5 Pa; commutation cycle, the lowest pressure point in the inner ring blast, the outer ring exhaust conditions, and the highest pressure point Appears in the second heating section of the second commutation process; furnace pressure fluctuations in general, little effect on the safe operation of the furnace. If using a single burner timing reversal, its impact on the furnace pressure can be reduced to a minimum.