采用焦炉煤气为燃料的SOFC-CCHP流程方案研究  

Research on the SOFC-CCHP System Process Schemes Fueled by Coke Oven Gas

作　　者：赵洪滨[1,2] 江婷[1,2] 杨倩[1,2] 杨微[1,2] 

机构地区：[1]中国石油大学(北京)机械与储运工程学院,北京102249 [2]过程流体过滤与分离技术北京市重点实验室,北京102249

出　　处：《工程热物理学报》2015年第8期1626-1632,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51274224)

摘　　要：本文基于分布式能源利用的思想,以固体氧化物高温排气驱动制冷机系统及供热系统同时产出一定量的电功、冷量和热量实现能量的梯级利用。通过ASPEN PLUS软件对SOFC-CCHP系统建模,设计出两种SOFC-CCHP流程方案——热水型余热锅炉系统和蒸汽型余热锅炉系统,并对系统进行分析。研究得到在两系统SOFC效率为55.17%时,采用蒸汽型余热锅炉比采用热水型余热锅炉系统净电效率提高2.58%,总效率提高了3.04%;此外采用热水型余热锅炉产生的热媒水量和制冷量也低于采用蒸汽型余热锅炉的系统,这是由于热水型余热锅炉损失较大,因此采用蒸汽型余热锅炉SOFC-CCHP系统有较好的经济性,应用前景广泛。Inspiring from the idea of distributed energy utilization,high-temperature exhaust from the solid oxide fuel cell drives chiller system and heating system and simultaneously generates a certain amount of cooling and heating to achieve energy cascade utilization.The author has designed two schemes of SOFC-CCHP system including hot water type and steam type,aided by ASPEN PLUS software the corresponding models have been established and numerically calculated.Furthermore,through systematical energy and exergy analysis,the results show that compared to the hot water type system with the same SOFC electrical efficiency of 55.17%,the electrical efficiency and the total exergy efficiency of steam type system are increased by 2.58%and 3.04%respectively.In addition,the amounts of cooling and heating generated from the hot water type system are also less than steam type for its high exergy loss.Therefore,the steam type of SOFC-CCHP system is more economical and possesses broad prospects of application.

关 键 词：固体氧化物燃料电池 冷热电联产 流程方案 余热锅炉 

分 类 号：TM911.4[电气工程—电力电子与电力传动]