双循环流化床化学链燃烧反应器冷态实验研究  

Cold-Model Experiment of Dual Circulating Fluidized Bed Reactor for Chemical Looping Combustion

作　　者：马琎晨[1,2] 赵海波 黄振[2] 魏国强[2] MA Jinchen;ZHAO Haibo;HUANG Zhen;WEI Guoqiang(State Key Laboratory of Coal Combustion,School of Energy and Power Engineering,Huazhong University of Science&Technology,Wuhan 430074,China;Key Laboratory of Renewable Energy,CAS,Guangzhou 510640,China)

机构地区：[1]华中科技大学能源与动力工程学院煤燃烧国家重点实验室,湖北武汉430074 [2]中国科学院可再生能源重点实验室,广东广州510640

出　　处：《石油学报（石油加工）》2020年第6期1189-1199,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点研发计划项目(2018YFB0605402);中国科学院可再生能源重点实验室项目(Y907ka1001);中国博士后科学基金项目(2019M662618)基金资助。

摘　　要：针对化学链燃烧反应器,特别设计了双循环流化床反应器。提出“鼓泡流化床/湍动流化床+提升管”的设计,通过提升管提供颗粒循环的动力,调整2个流化床反应器(空气反应器和燃料反应器)的流化气速以分别控制反应器的固体循环流量;提出双向流动密封阀的设计,形成对固体循环流量和床料量分布的柔性控制。建立了全尺寸双循环流化床冷态实验装置,并进行了连续稳定的冷态运行,实验研究了不同运行操作条件对反应器性能的影响。实验结果表明,流动密封阀内压力差范围在955~1834 Pa,固体循环流量范围在0.27~0.38 kg/s,双循环流化床之间的气体泄漏率为0.10%~0.22%。冷态实验提供了流体动力学参量,并验证了设计的可行性。The dual circulating fluidized bed reactor was designed for chemical looping combustion.The reactor was set as a turbulent bed or bubbling bed connected with a riser,respectively,which provided the driving force for the solid circulation.The solid circulation rate was adjusted by the gas velocity in the fluidized bed reactor.A two-way loop seal was configured to regulate flexibly the solid circulation rates and the mass distribution of the bed inventories in the system.A full scale cold-model dual circulating fluidized bed reactor was built.A continuous operation of the cold-model was investigated on the effects of the operational parameters on the performance of the reactor.The results show that the range of the pressure difference of loop seal is 955-1834 Pa,the solids circulation rate is 0.27-0.38 kg/s,and the gas leakage is 0.10%-0.22%.Our cold-model experiment provides the fluid dynamic parameters,and verifies the feasibility of the reactor design.

关 键 词：化学链燃烧 冷模 双向流动密封阀 固体循环流量 

分 类 号：TK16[动力工程及工程热物理—热能工程]