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Prediction of the behaviors of H_2S and HCl during gasification of selected residual biomass fuels by equilibrium calculation

机译：通过平衡计算预测所选残余生物质燃料气化过程中H_2S和HCl的行为

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E_2S and HCl released during biomass gasification can decrease the performance of high-temperature fuel cells in an Integrated Biomass Gasification Fuel Cell power-generating system. In this study, the behaviors of such poisonous gases during the gasification of different biomass fuels at various temperatures ranging from 673 to 1473 K were predicted using an equilibrium calculation approach. The predictions showed not only a difference in emission behaviors of HCl and H_2S among the biomass fuels, but also a low HCl emission (below 10 ppmv) for a few of the fuels at any temperature. In addition, the influence of biomass metal composition and gasification temperature on emission behavior was investigated by analyzing the distribution of chlorine and sulfur compounds and the phase diagram of selected elements such as silicon and aluminum. Finally, we suggest that the addition of a potassium-rich biomass to a potassium-poor biomass has the potential to reduce the HCl emission during gasification and then to maintain the HCl concentration in gas phase below the tolerance concentration of the fuel cells.
机译：生物质气化过程中释放的E_2S和HCl会降低集成生物质气化燃料电池发电系统中高温燃料电池的性能。在这项研究中，使用平衡计算方法预测了在673至1473 K的各种温度下不同生物质燃料气化过程中此类有毒气体的行为。这些预测不仅显示了生物质燃料中HCl和H_2S的排放行为的差异，而且还显示了在任何温度下少量燃料的HCl排放较低（低于10 ppmv）。此外，通过分析氯和硫化合物的分布以及所选元素（如硅和铝）的相图，研究了生物质金属组成和气化温度对排放行为的影响。最后，我们建议将富钾生物质添加到贫钾生物质中有潜力减少气化过程中的HCl排放，然后将气相中的HCl浓度保持在燃料电池的容许浓度以下。

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