高温气化剂加压喷动流化床煤气化试验研究

在热输入0.1MW的小型加压喷动流化床试验装置上进行了高温气化剂煤气化特性的试验研究,考察了气化温度、压力、空气系数和汽煤质量比等工艺参数对高温空气/蒸汽作为气化介质的煤气化行为的影响.试验结果表明,在所研究的工艺参数中,气化温度对高温空气煤气化特性影响最为显著.压力对气化性能的影响主要体现在改善流化床气化炉床内流化质量.空气系数及汽煤比的影响从本质上看是通过改变气化反应温度来实现的,对于一个特定的流化床气化工艺,空气系数及汽煤比均存在一个适宜的操作区域.

COAL GASIFICATION USING HIGH TEMPERATURE PREHEATED GASIFYING AGENT IN A PRESSURIZED SPOUT-FLUID BED

High temperature gasifying agent gasification of coal was performed in a 0.1MW thermal input pressurized spout-fluid. Effects of gasification temperature, pressure, equilibrium ratio, and the ratio of steam to coal on coal gasification behaviors were studied. The experimental results indicated that gasification temperature was the most important factor influenced coal gasification in the spout-fluid bed gasifier The gasification performance was improved at elevated pressure due to the better fluidization in the reactor. The effects of equilibrium ratio, and the ratio of steam to coal on coal gasification were realized by changing the reaction temperature, and the two parameters had an optimum operating range for a certain coal gasification process.