论文部分内容阅读
以传统生物质(稻壳)与潜在生物质(毛竹)为实验原料,通过热重法对生物质热解特性进行研究,利用单元体气化炉研究催化剂对生物质气化特性的影响。结果显示:脱灰除去矿物质后,热解曲线向高温区移动,反应活性降低;加入碱金属离子后,半焦产率提高,热解向低温区移动,反应活性增强。加入碱金属离子后,气化合成气中Cx Hy浓度大幅增大,并随催化剂含量的增大而增大。气化过程中,CO浓度曲线出现两个明显峰区,加入催化剂使前峰区面积显著增大、前移。在催化剂作用下,毛竹、稻壳的热解、气化特性明显改善。
The traditional biomass (rice husk) and potential biomass (Phyllostachys pubescens) were used as experimental materials to study the pyrolysis characteristics of biomass by thermogravimetric method. The effect of catalyst on the gasification characteristics of biomass was studied by using unit gasifier. The results show that the pyrolysis curve moves to the high temperature zone and the reactivity decreases after deashing and demineralization. When the alkali metal ion is added, the yield of semi-coke increases and the pyrolysis moves to the low temperature zone and the reactivity increases. With the addition of alkali metal ions, the concentration of Cx Hy in the gasified syngas increased significantly and increased with the increase of the catalyst content. During the gasification process, two obvious peak areas appear in the CO concentration curve. With the addition of a catalyst, the area of the front peak area increases significantly and moves forward. Under the action of catalyst, the pyrolysis and gasification characteristics of bamboo and rice husk have obviously improved.