垃圾焚烧炉排炉钢梁冷却措施分析

Analysis on Cooling Method of Steel Beam in Incineration Equipment

国内垃圾焚烧厂的单炉处理规模有越来越大的趋势,而随之焚烧炉的尺寸也越来越大。一般焚烧炉制造厂是通过长度不变,增加设备宽度的方式增加额定处理量的。焚烧炉内烟气温度最高可以达到1 300℃,所有的相关设备都必须考虑到冷却问题。考虑到某些焚烧设备内部需要设置钢横梁,又没有耐火材料进行保护,焚烧炉内的高温烟气对钢横梁的寿命及强度、刚度、稳定性均有不利影响,为此,必须设置冷却系统。通过对比2种空气冷却钢梁的措施及适用条件,得出了最优的空冷方式为两侧进风中间出风的方式。

As the scale of single-furnace treatment in domestic waste incineration plants is rising,the size of incinerators is also growing.In general,incinerator manufacturers increase the rated capacity by keeping the length constant and increasing the width of the equipment.The temperature of the flue gas in the incinerator can reach up to 1 300℃,and the cooling problem of all related equipment must be considered.Considering that steel beams are required to be installed in some incinerators and no refractory materials for protection,the high temperature flue gas in the incinerator has an adverse effect on the life,strength,rigidity and stability of the steel beams.Therefore,a cooling system must be provided.Finally,it was concluded that optimal air cooling mode was the air intake on both sides and outlet in the middle by comparing the measures and applicable conditions of two kinds of air cooling steel beams.