Biomass integrated gasifier-fuel cells: Experimental investigation on wood syngas tars impact on NiYSZ-anode Solid Oxide Fuel Cells
Biomass integrated gasifier-fuel cells: Experimental investigation on wood syngas tars impact on NiYSZ-anode Solid Oxide Fuel Cells
复制标题
DOI：
10.1016/j.enconman.2016.09.048
复制
发表时间：
2016-11
影响因子：
10.4
通讯作者：
Arianna Baldinelli;G. Cinti;U. Desideri;F. Fantozzi
中科院分区：
文献类型：
--
作者：
Arianna Baldinelli;G. Cinti;U. Desideri;F. Fantozzi
这项工作的目的是评估生物质集成气化燃料电池（B-IGFC）工厂的可行性。高温固体氧化物燃料电池（SOFC）是目前正在开发的最有效的能源系统，由于其高的工作温度，它们显示出良好的燃料灵活性。对于这里讨论的应用，燃料的主要活性物种是H2，CO和CH 4，然而，在木材衍生的合成气中也产生少量的高级烃。其中，焦油被称为生物质燃料的脚跟，导致内燃机和涡轮机的严重问题。相反，固体氧化物燃料电池可能能够分解焦油，从而提高电池性能。然而，为了避免快速降解，焦油浓度必须低于临界阈值。在这项工作中，固体氧化物燃料电池的操作与真实的木材合成气从一个试点间歇气化器首次证明。然后，在受控条件下重复更长的测试，人工复制含有和不含焦油的木材合成气。测试表明，商业NiYSZ阳极电池能够工作的合成气与模型焦油（甲苯）浓度高达10克/N米3，表现出的电压增益与合成气的性能没有模型焦油。实验后未观察到材料降解。作为最终结果，本文旨在提供一个简化的B-IGFC系统设计的概念证明，以达到其小规模安装的成本效益。
The aim of this work is to assess the feasibility of a Biomass Integrated Gasifier Fuel Cell (B-IGFC) plant. High temperature Solid Oxide Fuel Cells (SOFC) are the most efficient energy systems currently being developed and they show good fuel flexibility thanks to their high operational temperature. For the application here discussed, the fuel major active species are H 2, CO and CH 4; yet, in wood-derived syngas small amounts of higher hydrocarbons are produced too. Among them, tars are claimed to be biomass Achille’s heel, causing severe issues in internal combustion engines and turbines. Conversely, SOFCs might be able to decompose tars with a gain on cell performance. However, in order to avoid fast degradation, tars concentrations have to be below a critical threshold. In this work, SOFC operation with real wood syngas from a pilot batch gasifier is firstly demonstrated. Then, longer tests are repeated under controlled conditions, artificially reproducing wood syngas with and without tars. Tests demonstrated that commercial NiYSZ-anode cells are able to work on syngas with a model tar (toluene) concentration up to 10 g/N m 3, exhibiting a voltage gain with regard to performances on syngas without model tar. No material degradation was observed after the experiments. As a final result, this paper aims at providing a proof of concept of a simplified B-IGFC system design, in order to reach its cost-effectiveness on small-scale installations.