气化炉通用水动力计算软件的研发及应用

Development and application of gasifier hydrodynamic calculation general software

为了核对气化炉水汽系统的水动力安全或优化水汽系统的操作参数,分析了干煤粉气流床气化炉水汽系统,推导了压降-流量关系式及更新流量关系式,设计了循环系统校核计算迭代流程图,开发了适用于干煤粉气化系统的通用水动力计算软件。以神华宁煤GSP干煤粉气化的水动力系统为算列,结果表明:烧嘴支撑水路水量工业运行值为15 080.9 kg/h,软件计算值为15 190.5 kg/h。水冷壁水路流量计算值与监测值的最大偏差为3.3%,最小偏差0.17%。排渣口水路流量计算值和监测值偏差为1.83%。排渣口水路的出口温度计算值高于监测值1.5℃,其他水路出口温度计算值和监测值相差小于0.1℃。循环水罐、汽包和泵相关参数的模拟值与工业实际运行数值一致。

It is important to check steam-water system hydrodynamic security or optimize steam-water system operational parameter of gasifier for secure run. The steam-water system of entrained-flow pulverized coal gasifier was analyzed. It was obtained for pressure-flow relation and renewal flow relation. The iterative flow chart of circulatory system checking calculation was designed, developing the hydrodynamic calculation software suitable for dry pulverized coal gasification system. The steam-water system of pulverized coal gasifier GSP was simulated by the software. The results show that the flow rate of burner support is 15 080.9 kg/h by monitoring, and the value is 15 190.5 kg/h by the software calculating. The maximum deviation of calculated value and monitoring value is 3.3% and minimum deviation is only 0. 17% for screen cooling flow rate. The deviation of calculated value and monitoring value is 1.83% for slag discharged flow rate. The outlet temperature of slag discharge by the software calculating is 1.5 ℃ higher than that of running monitoring value, and other values are less than O. 1 ℃ for other water path. The simulation values of circulating water tank, steam drum and pump related parameters are in complete accordance with the industrial practical value.