Abthors introduce the notation of generalized geometric constructions in Rm generated by a directed graph G and by a sequence of similarity ratios which are labelled with the edges of this graph. In this paper, it is ...Abthors introduce the notation of generalized geometric constructions in Rm generated by a directed graph G and by a sequence of similarity ratios which are labelled with the edges of this graph. In this paper, it is obtained the Hausdorff dimension and measure of this construction object for some cases.展开更多
为了实现竹屑热解三态产物品质最优化，该文研究了竹屑250～950℃热解多联产的产物分布规律和演变特性，通过分析焦孔隙结构与分形维数演变规律对竹屑热解过程进行了探讨。结果表明，竹屑在较低温度下热解释放出大量的 CO 和 CO2，同时...为了实现竹屑热解三态产物品质最优化，该文研究了竹屑250～950℃热解多联产的产物分布规律和演变特性，通过分析焦孔隙结构与分形维数演变规律对竹屑热解过程进行了探讨。结果表明，竹屑在较低温度下热解释放出大量的 CO 和 CO2，同时生成乙酸、糠醛和酮类物质；450～650℃之间，木质素大量分解使得 H2和 CH4含量上升，液体产物中苯酚类物质含量迅速增加，并开始出现萘、茚等物质；750℃后挥发分二次反应加剧，CO相对含量升高。650℃前，生物炭比表面积与总孔容积迅速增大，平均孔径逐渐减少，表面分形维数和体积分形维数均增大；650℃后，各参数均表现出相反的变化规律。650℃竹屑热解生物焦具有较好孔隙结构，比表面积可达307.65 m2/g。根据竹屑热解多联产产物分布规律与演变特性，可同时得到具有较高品质的气、液和固三态产物，有利于实现竹屑综合高效利用，为竹屑热解多联产设备的开发与运行提供参考依据。展开更多
文摘Abthors introduce the notation of generalized geometric constructions in Rm generated by a directed graph G and by a sequence of similarity ratios which are labelled with the edges of this graph. In this paper, it is obtained the Hausdorff dimension and measure of this construction object for some cases.
