加压喷动流化床煤部分气化试验

在热输入0.1MW的喷动流化床煤部分气化炉上以空气和水蒸气的混合物为气化剂,进行了徐州烟煤的加压部分气化试验.考察了气化温度、压力等工艺参数对煤气热值、煤气成分、脱硫效率等指标的影响.试验结果表明:气化温度对煤气化过程影响显著;而增大压力,床内气体速度降低,延长了气化剂在床内的停留时间;另外压力增加改善了床内的流化质量,从而提高了气化效率,改善了煤气质量.提高温度和增大压力均能提高脱硫效率,但温度对脱硫效率的影响更为明显.

Experiment study on coal gasification in pressurized spout-fluid bed

Xuzhou bituminous coal was partly gasified using mixture of air and steam gasifying agent in a 0.1MW thermal input pressurized spout-fluid bed.Effects of gasification temperature and pressure on heat value of coal gas and component of coal gas and efficiency of desulfurization were studied.The experimental results indicate that gasification temperature is the most important influential factor to coal gasification.Velocity of gas is reduced and resident time of gasifying agent is prolonged at elevated pressure.On the other hand,there is better fluidization in the reactor at elevated pressure.So the efficiency of coal gasification can be increased and the quality of coal gas can be improved.Efficiency of desulfurization is elevated at higher temperature and pressure,Effect of temperature on efficiency of desulfuriation is more remarkable than that of pressure.