流化床反应器床层波动现象分析

Analysis of bed fluctuation in fluidized bed reactor

流化床反应器相比固定床、气流床反应器操作要求更高,流化建立是流化床反应器投料前的关键操作,也是平稳运行的前提,投料后维持流化床层稳定,在床层有波动现象时能够及时作出判断并调节平稳是装置长周期稳定运行的关键,文中通过对某中试流化床反应器的流化建立、床层波动现象、影响因素、调节措施等方面的研究,总结流化床反应器床层波动时反应器压力、压差、温度的变化规律,提出相应调整措施,为中试装置工业化推广提供技术支撑。

Compared with fixed bed,air flow bed reactor,the operation requirements of fluidized bed reactor are higher.The fluidization establishment is the key step before injecting feedstock into the fluidized bed reactor.It is the extremely important for long period stable operation of the plant by maintaining the table of fluidized bed layer after feeding,determining and adjusting smoothly in a timely manner when bed fluctuation.This paper studied the fluidization establishment,bed fluctuation phenomenon,influence factors and regulation measures of a pilot fluidized bed reactor,summarized the changing law of reactor pressure,pressure difference and temperature when bed fluctuation,and put forward the corresponding adjustment measures to provide technical support for the industrial promotion of pilot plant.