轧钢加热炉蓄热室压力分布试验

蓄热式轧钢加热炉因具有节能环保优势，在钢铁企业应用广泛。然而，强制排烟和供风方式造成炉膛压力高、风机电耗大等负面影响。蓄热室是蓄热式轧钢加热炉的重要部件，弄清楚加热炉蓄热室内压力分布至关重要。与以往冷态试验或数值模拟研究不同，以鞍钢连轧作业区1号加热炉为研究对象，搭建了半工业试验装置，开展了热态试验研究。结果表明，排烟工况下，随着烟气流速增加，蓄热室各点的压力逐渐升高;供风工况下，随着炉膛温度升高，蓄热室各点的压力逐渐增加。对某一固定的蓄热室长度，排烟压力损失均大于供风压力损失;随着蓄热室长度增加，排烟压力损失和供风压力损失均随之升高。

Experiments on pressure distribution inside regenerator of #br# reheating furnace for rolling process

 Regenerative reheating furnaces for the rolling process are widely used in steel plants because of its energy saving and emission reducing characteristics. However, negative effects including high furnace hearth pressure and high electricity consumption in fans occur due to its forced flue gas extraction and air supply modes. The regenerator is a key component of the regenerative reheating furnace, and it is important to understand the pressure distribution in the regenerator of the furnace. Differing from the previous cold state experiment and numerical simulation, a semi industrial experimental setup was established to conduct the hot state experiment, with furnace No.1 of Ansteel continuous rolling sector as the prototype. It was concluded that, under the flue gas extraction condition, the pressure inside regenerator will increase with the increase of flue gas velocity. While, under the air supply condition, the pressure inside regenerator will increase with the increase of furnace hearth temperature. For a given length of a regenerator, the pressure loss of the flue gas extraction process was higher than that of the air supply process. Pressure losses of both flue gas extraction and air supply processes will increase with the increment in the length of the regenerator.