超临界水流化床内煤气化过程建模与仿真(1)：数学模型及物理场分布规律  

Modeling and Numerical Study on a Supercritical Water Fluidized Bed Reactor for Coal Gasification(1):Mathematical Model and Distributions of Physical Fields

作　　者：郭斯茂[1] 郭烈锦[1] 聂立[2] 金辉[1] 葛志伟[1] 吕友军[1] 房慧 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049 [2]东方电气集团东方锅炉股份有限公司,四川自贡643001

出　　处：《工程热物理学报》2014年第3期507-511,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金创新群体资助项目(No.51121092);国家自然科学基金重点项目(No.51236007)

摘　　要：煤的超临界水气化是极具发展前景的高效洁净煤炭转化技术.本实验室发明新型超临界水流化床反应器,避免了管式反应器中出现的结焦堵塞现象,实现了高浓度煤浆的高效连续气化.本文对超临界水流化床反应器内的物理过程进行了数学建模,并对宽广的温度参数范围下反应器内温度场、流场、以及颗粒停留时间演变规律等进行数值模拟分析,揭示了反应器内部各物理场的特征,加深了对超临界水流化床内流动传热过程的认识,对反应器的运行与设计具有理论参考价值。Supercritical water gasification of coal is a clean and efficient technology to convert coal to hydrogen rich gas. The efficiency and continuous gasification of coal in supercritical water has achieved in a novel fluidized bed reactor invented by our laboratory. In this paper, the mathematical model for the fluidized bed reactor was developed to describe the gasification process. The evolvement process of temperature field, flow field, and particle residence time under wide reactor temperature range were numerical studied, and the characters of physical fields in the reactor were revealed. The model and numerical results may be helpful for optimizing operations and designs of the fluidized bed reactor.

关 键 词：煤气化 超临界水气化 流化床 数值模拟 

分 类 号：TK12[动力工程及工程热物理—工程热物理]