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碱回收锅炉作为大型造纸行业中必不可少的重要设备,其数量、容量也在不断增长,向大型和超大型化方向迈进,其安全、稳定运行日益重要。相对于传统锅炉,由于燃料热值低、炉膛温度低,其体型比较大,结构形式及受热面布置也有所不同。因为炉膛内碱性物质及炉底垫层的存在,对锅炉水冷壁的安全运行要求较高,因此所采用了浇注料或复合钢管防腐蚀;由于烟气中含有大量的K、Na、S、C1、Si等物
As an indispensable and important equipment in the large-scale papermaking industry, the quantity and capacity of alkali recovery boilers are continuously increasing. As the large and large-scale recovery reactors, their safety and stable operation are increasingly important. Compared with the traditional boilers, due to the low calorific value of the fuel and the low temperature of the furnace, the size of the boiler is relatively large, and the arrangement of the structure and the heating surface are also different. Because of the presence of alkaline substances in the furnace and the presence of the bottom of the furnace, the boiler wall of the boiler safe operation of the higher requirements, so the use of castable or composite steel pipe corrosion; as the flue gas contains a large number of K, Na, S, C1, Si and other objects