基于Aspen Plus的生物质化学链气化耦合CO_(2)裂解模拟研究  

Study on the Simulation of Biomass Chemical Looping Gasification Coupled With CO_(2) Pyrolysis Based on Aspen Plus

作　　者：冯宜鹏 魏国强[2] 黄振[2] 郑安庆[2] 苏同超[1] 张明明 FENG Yipeng;WEI Guoqiang;HUANG Zhen;ZHENG Anqing;SU Tongchao;ZHANG Mingming(College of Mechanical and Electrical Engineering,Henan Institute of Science and Technology,Xinxiang 453003,China;CAS Key Laboratory of Renewable Energy,Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences(CAS),Guangzhou 510640,China)

机构地区：[1]河南科技学院机电学院,河南新乡453003 [2]中国科学院广州能源研究所中国科学院可再生能源重点试验室,广东广州510640

出　　处：《石油学报（石油加工）》2022年第6期1456-1466,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金面上项目(51976226);河南省科技攻关计划项目(202102310288)资助。

摘　　要：生物质化学链气化耦合CO_(2)裂解技术能够在产生高品质合成气的同时将CO_(2)转化为CO,是可以同步实现CO_(2)增量降低和存量减少的有效手段之一。使用Aspen Plus软件,建立了生物质化学链气化耦合CO_(2)裂解过程的模型,研究了温度、压力和生物质与氧载体质量比(m(Biomass)/m(Oxygen carrier),简称m_(B)/m_(O))对反应产出合成气组分、气化特性参数和系统热负荷的影响。结果表明:随着温度的升高,反应产出的合成气中CO、H_(2)含量呈现上升趋势,CO_(2)、CH_(4)含量下降,产气热值增大,且在高于800℃时趋于稳定,反应温度在1000℃以下时,系统产热可以满足反应需要;当反应压力由0.1 MPa提高至0.5 MPa时,H_(2)、CO含量下降,CO_(2)含量提高,合成气热值下降,系统整体放热量增大;当m_(B)/m_(O)增大时,生物质进料量逐渐增多,氧载体还原产物中Fe含量增大,FeO含量降低,合成气热值上升;当m_(B)/m_(O)在0.3~1.3区间内时,系统产热可以满足系统反应所需。耦合CO_(2)裂解反应器后碳转化率有较大提升,并且在m_(B)/m_(O)为0.7时提升最为显著。The technology of biomass chemical looping gasification coupled with CO_(2) pyrolysis can be used for converting CO_(2) into CO while producing high-quality syngas,which is one of the effective means to synchronously reduce the increment and stock of CO_(2).Using Aspen Plus software,this paper establishes a model for the biomass chemical looping gasification coupled with CO_(2) pyrolysis,and study the effects of temperature,pressure and mass ratio of biomass to oxygen carrier(m(Biomass)/m(Oxygen carrier),known as m_(B)/m_(O) for short)on the components of the syngas produced during reaction,gasification characteristic parameters and system heat load.The results show that with the rise of temperature,the content of CO and H_(2) in syngas shows an upward trend,while the content of CO_(2) and CH_(4) shows a downward trend.The calorific value of syngas increases and tends to be stable above 800℃.When the reaction temperature is below 1000℃,the heat production of the system can meet the needs of reaction.When the reaction pressure increases from 0.1 MPa to 0.5 MPa,the content of H_(2) and CO decreases,the content of CO_(2) increases,the calorific value of syngas decreases,and the heat release of the whole system increases.When m_(B)/m_(O) increases,the biomass feed increases gradually,the content of Fe in oxygen carrier reduction product increases,the content of FeO decreases,and the heat value of syngas increases.When m_(B)/m_(O) falls within the range of 0.3—1.3,the heat production in the system can meet the needs of system reaction.After being coupled with CO_(2) pyrolysis reactor,the carbon conversion can be improved greatly,mostly significant when m_(B)/m_(O) is 0.7.

关 键 词：生物质 化学链气化 耦合 二氧化碳 

分 类 号：TK6[动力工程及工程热物理—生物能]