循环流化床锅炉结焦原因分析及对策

Analysis of Causes for Coking of Circulating Fluidized Bed Boiler and Counter-Measures

结焦是循环流化床锅炉运行中较为常见的故障,直接影响到锅炉的安全经济运行。根据几年来流化床锅炉调试和运行经验,循环流化床锅炉结焦的原因主要是炉内流化工况不良或操作失误等,使床料局部或整体温度超过灰的熔点。提出加强燃料监督、强化运行管理、严格控制设备参数、降低飞灰残碳含量等措施,以避免循环流化床锅炉结焦。

Coking is a common trouble in the operation of the circulating fluidized bed boiler, directly affecting the safe and economic operation of the boiler. Based on the experience gained in the debugging and operation of the boiler, the reasons for coking are mainly poor fluidization work condition in the boiler or faulty operation, causing the local or bulk temperature of the charge to exceed the ash fusion point. Measures are proposed, including strengthening the supervision of the fuel and operation management, strictly controlling the equipment parameters, and lowering the residual carbon content of the fly ash, so as to prevent eoking in the furnace.