blowing period

The oxygenated blow wash of boiler can reduce the number of pipe blowing cycles, lower the consumption of water, fuel, electricity and manpower, shorten trial run period, and improve blow wash quality and quality of vapour with significant economic benefits.

锅炉采用加氧吹洗，可以减少吹管次数，降低水、油、电及人工的消耗，缩短试运工期，提高吹洗质量及蒸汽品质，经济效益显著。

The result of ammonia nitrogen blow-off experiment showed that under the condition of water temperature 20.6 ℃, pH value 10.8, and the blowing period 4h, the ammonia nitrogen removal efficiency was 80.8%.

氨氮吹脱试验结果表明，在水温为20.6℃、pH值为10.8、曝气时间为4h的条件下，氨氮去除率为80.8%。

The results from laboratory tests show that the maximum increments of SO2 conversion efficiency are varied from 1.17% to 3.74% depending on the O2/ SO2 ratio, blowing ratio and switching period.

实验室试验结果表明，在不同的氧硫比、吹气比和切换周期的条件下，SO2转化率的最大增值为1.17%～3.74%。

A model of optimized dephosphorization in the primary blowing period for top-blown oxygen converter

氧气转炉吹炼前期的最佳化脱磷工艺基础