Abstract A simple model based on oxygen carrier kinetics has been developed for the in situ Gasification Chemical Looping Combustion (iG-CLC) process. Once the kinetic parameters for different oxygen carriers and solid fuels are known, the model allows easy and fast comparison of different oxygen carrier-solid fuel pairs, which is the main purpose of the model here presented. The comparison is based on the estimation of the CO2 capture efficiency value (ηCC) and the total oxygen demand (ΩT) as evaluating parameters. To show the proposed procedure for the comparison, two Fe-based oxygen carriers (ilmenite and Tierga ore), and five different types of solid fuels: anthracite (Yangquan), sub-bituminous (Tremedal), two bituminous coals (Cerrejon and Taldinsky) and one biomass (olive tree pruning) have been considered. The comparison of the calculated CO2 capture efficiency and total oxygen demand must be done including the effect of operating conditions such as temperature and solids circulation rate. A set of optimized operating conditions are given as a reference for future evaluations of different oxygen carrier-solid fuel pairs. This method is thought as a useful tool for a preliminary evaluation of new oxygen carriers for iG-CLC with different solid fuels.

中文翻译：

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在 i G-CLC 工艺中比较评估不同氧载体和固体燃料的简单模型

摘要 为原位气化化学循环燃烧 (iG-CLC) 过程开发了一个基于氧载体动力学的简单模型。一旦已知不同氧载体和固体燃料的动力学参数，该模型就可以轻松快速地比较不同的氧载体-固体燃料对，这是此处介绍的模型的主要目的。该比较基于作为评估参数的 CO2 捕获效率值 (ηCC) 和总需氧量 (ΩT) 的估计。为了显示用于比较的建议程序，两种铁基氧载体（钛铁矿和 Tierga 矿石）和五种不同类型的固体燃料：无烟煤（阳泉）、亚烟煤（Tremedal）、两种烟煤（Cerrejon 和 Taldinsky）并且已经考虑了一种生物量（橄榄树修剪）。必须对计算的 CO2 捕获效率和总需氧量进行比较，包括操作条件的影响，如温度和固体循环速率。给出了一组优化的操作条件，作为未来评估不同氧载体-固体燃料对的参考。该方法被认为是初步评估不同固体燃料 iG-CLC 新氧载体的有用工具。