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Performance evaluation at different process parameters of an innovative prototype of biomass gasification system aimed to hydrogen production

机译：旨在制氢的生物质气化系统创新原型在不同工艺参数下的性能评估

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Gasification is currently considered one of the most effective technologies to produce power and hydrogen from biomass and the scope of this work is to determine performances of such an energy system in terms of production of pure hydrogen. The overall plant has been simulated by means of ChemCAD (R) software. It is composed of a dual fluidized bed biomass gasifier with Catalytic Filter candles (CF), innovatively integrated within the gasification reactor, Water Gas Shift reactor (WGS), equipped with a desulphurization reactor (DeS), and Pressure Swing Adsorber system (PSA), coupled with a micro gas turbine system (mGT) as an auxiliary power generator aimed to supply inner needs of electricity. Research and pilot scale tests on gasifier, CF, WGS reactor and PSA unit allowed to validate the model. The components have been integrated in a relatively small size and innovative plant (1 MWth as biomass input). This integration entails highly pure Hy and major efficiency. The model allowed a sensitivity analysis of basic parameters as WGS temperature, residence time and steam to biomass ratio (SB). Important results have been generated reaching a maximum hydrogen yield of 75.2 g(H2)/kg(bio) and a maximum efficiency, HHV based, of 55.1%. Optimal compromise of results was obtained with SB equal to 2, WGS reactor temperature at 300 degrees C and residence time at 0.8 s. Finally, even the chance to generate hydrogen without consumption of auxiliary fuel (by exploiting off gas and waste heat recovery) has been investigated. (C) 2016 Elsevier Ltd. All rights reserved.
机译：气化目前被认为是由生物质生产电力和氢的最有效技术之一，这项工作的范围是确定这种能源系统在生产纯氢方面的性能。整个工厂已通过ChemCAD®软件进行了模拟。它由带有催化滤烛（CF）的双流化床生物质气化炉组成，创新地集成在气化反应器，带脱硫反应器（DeS）的水煤气变换反应器（WGS）和变压吸附器系统（PSA）中，再加上微型燃气轮机系统（mGT）作为辅助发电机，旨在满足内部电力需求。在气化炉，CF，WGS反应器和PSA装置上进行的研究和中试规模试验可以验证该模型。这些组件已集成到相对较小的创新型工厂中（1 MWth作为生物质输入）。这种整合需要高纯度的Hy和主要的效率。该模型允许对基本参数（如WGS温度，停留时间和蒸汽与生物量之比（SB））进行敏感性分析。已经产生了重要的结果，最大氢产量为75.2 g（H2）/ kg（bio），最大效率（基于HHV）为55.1％。在SB等于2的情况下获得了结果的最佳折衷，WGS反应器温度为300摄氏度，停留时间为0.8 s。最后，甚至研究了在不消耗辅助燃料的情况下（通过利用废气和废热回收）产生氢气的机会。 （C）2016 Elsevier Ltd.保留所有权利。

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