流化床反应器甲烷化过程的数值模拟研究

Numerical Investigation on Methanation Reaction in Fluidized Bed Reactor

我国是天然气消费大国且天然气消耗量逐年增加,“富煤、贫油、少气”的能源结构特点决定我国在天然气领域对外进口依赖度很高。利用丰富的煤炭资源经气化、合成气净化处理、甲烷化制备合成天然气是填补我国天然气供应缺口、煤炭清洁利用的有效途径,同时对保证能源战略安全、调整能源产业结构具有重要意义。本文针对流化床甲烷化反应器制备天然气过程进行数值模拟研究,以煤气化获得的合成气为原料,在催化剂作用下制备天然气,通过数值模拟揭示甲烷化反应过程的流动与反应特性,为甲烷化技术的发展和工业应用提供理论支持。

China is a large natural gas consuming nation and the consumption increases year by year.It is mainly dependent on imports of gas due to the characteristics of energy structure in China.One effect way is to generate synthetic natural gas by gasification of coal,gas cleaning,methanation and fuel upgrading,which will realize the coal cleaning utilization,overcoming shortage of natural gas and security of energy supplement.The main purpose of this work is to investigate the methanation process in fluidized bed reactot using the syngas under the action of catalyst.Research results will help for better understanding the hydrodynamic and reaction in the reactor,which are the support for industrial application and development of methanation technology.