关键词:

生物质气, 临氧, 蜂窝催化剂, 焦油转化

Abstract:

The NiO-MgO solid solution monolithic catalyst was prepared by the wet impregnation method.Sixty hours partial oxidation reforming tests were carried out at 750℃.TG-DSC was used to analyze the carbon deposition on the surface of the catalyst.GC and GC-MS were used to analyze the components of biomass raw gas and tar conversion products.The results showed that the addition of O₂ could effectively increase the quality of fuel gas.Molar ratio of H₂/CO increased by 10% compared with that of dry reforming.But more O₂ would decrease the H₂/CO ratio.The addition of O₂ could also significantly increase the activity and stability of the catalyst.The CH₄ conversion reached 99% , which was 5% higher than that of dry reforming.TG-DSC showed that the increase of O₂/raw gas ratio could decrease the carbon deposition on the surface of the catalyst.Tar collected from biomass gasification was added in feed raw gas.GC-MS showed that most of the tar was converted to H₂, CO and a trace amount of lighter components. The addition of O₂ could eliminate the oxygen-containing organic compounds which were difficult to be eliminated in dry reforming.

Key words:

生物质气, 临氧, 蜂窝催化剂, 焦油转化