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首页> 外文期刊>AIChE Journal >A Novel Dual Circulating Fluidized Bed System for Chemical Looping Processes
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A Novel Dual Circulating Fluidized Bed System for Chemical Looping Processes

机译:用于化学循环过程的新型双循环流化床系统

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A fluidized bed system combining two circulating fluidized bed reactors is proposed and investigated for chemical looping combustion. Direct hydraulic communication of the two circulating fluidized bed reactors via a fluidized loop seal allows for high rates of global solids circulation and results in a stable solids distribution in the system. A 120 kW fuel power bench scale unit was designed, built, and operated. Experimental results are presented for natural gas as fuel using a nickel-based oxygen carrier. No carbon was lost to the air reactor under any conditions operated. It is shown from fuel power variations that a turbulent/fast fluidized bed regime in the fuel reactor is advantageous. Despite the relatively low riser heights (air reactor: 4.1 m, fuel reactor: 3.0 m), high CH4 conversion and CO2 yield of up to 98% and 94%, respectively, can be reported for the material tested.
机译:提出并结合两个循环流化床反应器的流化床系统,并进行化学循环燃烧研究。两个循环流化床反应器通过流化回路密封件直接进行液压连通,可实现高速率的整体固体循环,并导致系统中稳定的固体分布。设计,建造和运行了一个120千瓦的燃料动力台式秤单元。给出了使用镍基氧气载体作为天然气燃料的实验结果。在任何操作条件下,空气反应器都不会损失碳。从燃料功率变化可以看出,燃料反应器中的湍流/快速流化床状态是有利的。尽管立管高度相对较低(空气反应堆:4.1 m,燃料反应堆:3.0 m),但对于所测试的材料,仍可以报告高CH4转化率和高达98%和94%的CO2收率。

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