Gasification characteristics of sewage sludge combined with wood biomass
Gasification characteristics of sewage sludge combined with wood biomass
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DOI：
10.1007/s10163-014-0270-x
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发表时间：
2014-06
影响因子：
3.1
通讯作者：
K. Lee;Woo-Chan Lee;H. Lee;Jong-in Dong
中科院分区：
文献类型：
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作者：
K. Lee;Woo-Chan Lee;H. Lee;Jong-in Dong
以往的研究认为，气化过程的气体产物在气体组成和热值方面存在一定的局限性。为提高污泥与木材混合物的气化性能，研究了污泥与木材混合物在不同配比下的气化特性。在间接加热流化床反应器上进行了气化实验。随着反应温度从600 °C增加到900 °C，气体产物的产率增加，CO、H2和CH 4的生成量增加，气体转化反应更加活跃。当当量比从0.2增加到0.4时，CO2的组成比增加，CO、CH 4、H2的组成比降低。还测试了几个操作变量，包括木材与干污泥的混合比。从实验的这个初始阶段，鼓泡流化床气化器的最佳操作条件可以被认为是在测试变量范围内的900 °C的温度; 0.2的当量比和40%的木材混合比。这些结果将被更彻底地研究，以应用于更大规模的中试系统。
The gas products from gasification processes have been considered to have some limitations in gas composition and heating value from the previous studies. Gasification characteristics of sewage sludge and wood mixture were investigated using different mixing ratios with the purpose of better quality of gas product suitable for energy/power generation. The gasification experiment was performed by an indirectly heated fluidized bed reactor. As reaction temperature increased from 600 to 900 °C, the yield of gas product increased with higher generation of CO, H2and CH4by more activated gas conversion reactions. As the equivalence ratio increased from 0.2 to 0.4, composition ratio of CO2increased while CO, CH4, H2decreased as expected. Several operating variables including mixing ratio of wood with dried sludge were also tested. From this initial stage of experiment, optimal operating conditions for the bubbling fluidized bed gasifier, could be considered 900 °C in temperature; 0.2 in equivalence ratio and 40 % in wood mixing ratio within test variables range. These results will be more thoroughly investigated for the application to the larger scale pilot system.