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一、概述钢铁工业初轧均热炉设备,均设置有换热器,用以回收烟气带走的废热,以提高炉子的热效率,从而达到节约能源的目的。通常均热炉出炉废气温度在1000～1300℃左右,采用液态出渣的均热炉废气温度还要高。采用陶瓷换热器的优点在于能承受高温并将空气预热到700～800℃以上,这是用合金钢金属换热器所不能比拟的,因而陶瓷换热器在当今节能问题上占有相当重要的地位。但是,陶瓷换热器存在着一定的缺点,目前陶瓷换热器是由长度为282～387毫米的粘土砖短管等十四种异型耐火砖砌筑而成,结构极其复杂。最主要缺点是砌缝多,气密
First, an overview of the steel industry are rolling equipment are soaking furnace, are equipped with heat exchangers, used to recover flue gas away waste heat, in order to improve the thermal efficiency of the stove, so as to achieve the purpose of energy conservation. Usually soaking furnace baked gas temperature is about 1000 ~ 1300 ℃, using liquid slag out of the soaking furnace exhaust gas temperature even higher. Ceramic heat exchangers have the advantage of being able to withstand high temperatures and air preheating to 700 ~ 800 ℃ above, which is not comparable with the alloy steel metal heat exchanger, ceramic heat exchanger in today’s energy-saving issues occupy a very important Position. However, the ceramic heat exchanger has some shortcomings. At present, the ceramic heat exchanger is made of fourteen shaped refractory bricks, such as short-tubes of clay bricks of 282-387 mm in length, which are extremely complicated in structure. The main disadvantage is that more joints, airtight