Abstract

Calcium-looping process was simulated by solution of one-dimensional mass and energy balance equations for both interconnected fluidized bed reactors. Kinetics for the carbonator and calciner were derived from literature sources and were revised to include the effects of sulphation. The degree of apparent carbonation was compared to the actual level of carbon dioxide removal through a series of sensitivity analyses. It has been found that carbonation decreases with an increase in temperature. Sulphation increases with an increase in temperature. The activity of calcium oxide decreases with an increase in carbonation–calcination cycles. Neglecting the effect of sulphation during the design of the calcium-looping system leads to overestimation of active calcium particles that will react with carbon dioxide.

中文翻译：

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用于从烟气中去除二氧化碳的钙循环流化床反应器系统的建模

摘要

通过求解两个相互连接的流化床反应器的一维质量和能量平衡方程来模拟钙循环过程。碳酸化器和煅烧炉的动力学来自文献来源，并进行了修订以包括硫酸化的影响。通过一系列敏感性分析，将表观碳化程度与二氧化碳去除的实际水平进行了比较。已经发现碳化作用随着温度的升高而降低。硫酸化随温度升高而增加。氧化钙的活性随着碳化-煅烧循环的增加而降低。在钙循环系统的设计过程中忽略硫酸化的影响会导致高估会与二氧化碳反应的活性钙颗粒。