Biomass gasification: product quantification and reaction kinetics

本研究的目的是为生物质催化气化获得的合成气和焦油开发新的产品量化方法。将使用的实验室规模和分析设备将允许使用气相色谱-质谱与FID和TCD检测器，填充柱和毛细管柱对合成气成分和焦油种类进行定量评估。本文将对不同极性的毛细管柱进行表征和研究，以分离含氧化合物和芳烃等焦油组分，确定不同阶次的吸附参数、保留时间和统计矩。这将为这项CRD研究的合作伙伴公司Mandel Scientific提供竞争和科学优势，为其用于生物质气化产品分析的gc - ms -毛细管柱仪器建立一个利基市场。此外，为了在模拟工业条件的现实场景中进行这些实验，将在相关工艺条件下研究生物质催化气化的催化剂和动力学模型。这些新催化剂的最终目标将是优化酒精生产（如乙醇）的H2/CO比，减少焦炭和焦油的形成，并保持催化剂的长期稳定性。为此，我们建议考虑用掺杂剂修饰镍基催化剂，并建立吸附、扩散和反应现象的动力学模型。动力学将利用与曼德尔合作开发的先进分析设备的数据建立。

The goal of the present study is to develop new product quantification approaches for syngas and tars obtained from biomass catalytic gasification. The laboratory scale and analytical equipments to be used will allow quantitative assessments of syngas components and tar species using GC-MS with FID and TCD detectors, packed and capillary columns. A number of capillary columns with different polarities will be characterized and studied to separate tar components, such as oxygenates and aromatics, determining adsorption parameters, retention times and statistical moments of different order. This will provide to the partner company of this CRD research, Mandel Scientific, a competitive and scientific advantage, establishing a niche market for their GC-MS-capillary column instruments for biomass gasification product analysis. Furthermore, in order to perform these experiments in realistic scenarios that simulate industrial conditions, catalysts as well as kinetic models for catalytic gasification of biomass will be studied under relevant process conditions. The ultimate goal of these new catalysts will be to optimize H2/CO ratios for alcohol production (e.g. ethanol), with minimum coke and tar formation and for long term catalyst stability. To accomplish this, we propose to consider nickel based catalysts modified with dopants and kinetic models accounting for adsorption, diffusion and reaction phenomena. Kinetics will be established using data from the advanced analytical equipment developed in collaboration with Mandel.