Steam gasification of coal cokes in an internally circulating fluidized bed of thermal storage material for solar thermochemical processes
Steam gasification of coal cokes in an internally circulating fluidized bed of thermal storage material for solar thermochemical processes
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DOI：
10.1016/j.ijhydene.2014.05.124
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发表时间：
2014-07
影响因子：
7.2
通讯作者：
N. Gokon;T. Izawa;T. Abe;T. Kodama
中科院分区：
文献类型：
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作者：
N. Gokon;T. Izawa;T. Abe;T. Kodama
以石英砂和煤焦颗粒为原料，利用集中的x光辐射作为能量源，建立了实验室规模的开窗内循环流化床反应器原型。采用石英砂作为流化床的化学惰性床材，煤焦颗粒作为吸热气化反应的反应颗粒。采用石英砂作为床料用于直接辐照气化反应器的优点是：(1)气化过程中床层高度保持在恒定水平。(2)石英砂在反应器内作为传热/储热介质。CO、H2、CO2产率等气化性能；碳转换;以石英砂为传热/储热介质，对流化床反应器的光能转换进行了研究。论述了床料石英砂的使用对气化性能的影响。
A laboratory-scale prototype windowed internally circulating fluidized-bed reactor made of quartz sand and coal coke particles was investigated for steam gasification using concentrated Xe-light radiation as the energy source. The quartz sand was used as a chemically inert bed material for the fluidized bed, while the coal coke particles functioned as the reacting particles for the endothermic gasification reaction. The advantages of using quartz sand as the bed material for the directly irradiated gasification reactor are as follows: (1) The bed height is maintained at a constant level during the gasification. (2) The quartz sand functions as a thermal transfer/storage medium inside the reactor. The gasification performances such as the production rates of CO, H2, and CO2; carbon conversion; and light-to-chemical energy conversion were evaluated for the fluidized-bed reactor with a thermal transfer/storage medium (quartz sand). The effects of using the bed material (quartz sand) on the gasification performance are described in this paper.