下行床反应器热试装置设计与开发  

Design and development of hot model test unit of the downer reactor

作　　者：周如金[1] 罗国华[2] 魏飞[2] 金涌[2] 

机构地区：[1]茂名学院,广东茂名525000 [2]清华大学化学工程系,北京100084

出　　处：《化学工程》2004年第3期33-36,共4页Chemical Engineering(China)

摘　　要：气固并行向下流动的下行床反应器比提升管具有气固接触时间短、气固速度及浓度径向分布更为均匀、气固轴向返混大大减少、易实现高固气比操作等特点。在下行床反应器小型热试装置开发过程中,为发挥下行床的技术优势,重点研究和解决了反应器出入口结构、原料雾化、高温高流通量下固体循环量测量与控制等几个关键性的工程问题,为下行床反应器的热试研究和应用开发提供了基础。Compared with the riser, the downer has several distinct advantages such as gassolid resident time, more uniform distribution of gassolid velocity and solid content, and reduced axial backmixing and easy separation of gas and particles at the outlet of reactor, etc. The condition of gassolid contact in the downer is more close to plug flow. For making full use of the advantages of the downer, several key problems in the process of hot downer reactor, such as the inlet and outlet configurations of the reactor, atomizing of feed, the control and online measurement of solid circulating rate at high temperature and mass flow flux, were studied, which provided experimental technique support for the progressive study on the downer reactor.

关 键 词：下行床反应器 实验技术 热模试验装置 

分 类 号：TQ051.5[化学工程]