油品加氢催化剂多尺度孔道结构的传递-反应规律研究

项目名称： 油品加氢催化剂多尺度孔道结构的传递-反应规律研究

项目编号： No.21476255

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 化学工业

项目作者： 魏伟胜

作者单位： 福州大学

项目金额： 40万元

中文摘要： 随着环保法规的日益严格和产品质量要求的不断提高，对用于生产清洁油品的加氢填充床反应器的整体操作性能也提出了更高的要求。加氢反应器床层中是一个具有多尺度孔道结构的复杂体系，由催化剂颗粒堆积而成的毫米级床层孔道是气液流动的通道，而催化剂晶粒内本身存在的纳米级孔道以及晶粒之间堆积所形成的微米级孔道是催化反应的主要场所。因此合理设计催化剂孔道结构既能充分发挥催化剂的性能，又能合理分配物流和能流，避免形成非理想的流动。过去的研究多停留在单一尺度或单一层次上考虑催化剂结构对传递-反应性能的影响，缺乏从多个尺度综合考虑催化剂结构影响因素。为此，本项目拟以油品催化加氢脱硫过程为研究对象，基于多尺度方法，在纳米、微米和毫米级孔道尺度下研究孔道结构的传递-反应性能，并通过多尺度的耦合建立油品加氢精制的多尺度反应器模型，为催化剂结构、装填方式和反应器内构件的优化设计以及油品加氢精制工艺技术的开发提供必要的基础

中文关键词： 多尺度；模拟；孔道；催化剂结构；加氢精制

英文摘要： Due to increasingly stringent strategies for the environmental protection and improved requirements of the quality of the fuel product, the requirement to performance of the packed-bed reactor for clean fuel production is becoming rigor. Internal and external surfaces of the catalyst particles are the place in which catalytic reactions happen, and the pore among catalyst particles in the reactor are the channels for gas-liquid flow. Hence, it is a key role to properly design the catalyst structures in order to improve the catalyst performance and the efficient distribution of the reactants through the catalytic bed. However, most of the previous studies only concentrated on considering the catalyst structure design in a mono-scale or mono-level, without considering the catalyst design and packing in multi-scale. In this present proposal, multi-scale analysis and strategy are explored to develop catalyst designs for oil hydrofining process. Studies of length scales are classified into three levels, nano-scale (catalyst intrinsic structures), micro-scale (catalyst particle) and macro-scale (reactor size). The flow and reaction characteristics are to be respectively studied in each scale. Reactor model will be established by multi-scale coupling. This study will provide essential basis for the optimization design

英文关键词： Multi-scale；Simulation；Pore；Catalyst structure；Hydrorefining