化学链燃煤系统的过程模拟  

PROCESS SIMULATION OF COAL-FUELED CHEMICAL LOOPING COMBUSTION

作　　者：陈猛[1] 赵海波[1] 熊杰[1] 郑楚光[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《工程热物理学报》2010年第10期1639-1642,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究规划项目(No.2006CB705807)

摘　　要：化学链燃烧是一个基于(近)零排放理念的先进能源利用技术。针对以NiO/NiAl_2O_4为氧载体的煤直接化学链燃烧系统,本文利用Aspen Plus软件进行了详细的模拟计算和热力学分析,研究了主要运行参数对系统性能的影响,得到了系统优化的运行工况,即燃料反应器的温度和压力分别为816.41℃和0.1 MPa,空气反应器的温度和压力分别为1200℃和0.1 MPa,氧载体煤北为14.0,空气煤北为7.8;并北较和评价了化学链燃煤系统和常规空气燃煤系统,发现化学链燃煤系统在热效率、(?)效率、碳捕捉率、NO_x和CO排放量等方面有优势,但SO_x排放量与常规燃煤系统相近。Chemical looping combustion （CLC） is an advanced energy-utilization technology with near zero-emission of pollutants. As for coal-fueled chemical looping combustion system using NiO/NiAl2O4 oxide carriers, Aspen Plus was used to perform detailed process simulation and thermodynamic analysis. The effect of main operating parameters on system performance was first researched. The optimal operation conditions were obtained as following： the temperature and pressure in the fuel reactor are 816.41℃ and latm, respectively, the temperature and pressure in the air reactor are 1200℃ and latm, respectively, the ratio of mass fluxes of NiO/NiAl2O4） and coal is 14.0, the ratio of mass fluxes of air and coal is 7.8. Then the CLC of coal is compared with the traditional combustion of coal. It is found that the CLC of coal performs advantages over the traditional combustion of coal with respect to thermal efficiency, exergy efficiency, carbon capture efficiency, emission amount of NOx and CO, however the CLC of coal releases similar amount of SO, with the traditional combustion of coal.

关 键 词：系统分析 化学链 煤燃烧 二氧化碳 

分 类 号：TK123[动力工程及工程热物理—工程热物理]