氨基热化学储能反应器的热性能分析  

ANALYSIS ABOUT THERMAL PERFORMANCE OF AMMONIA-BASED THERMOCHEMICAL ENERGY-STORING REACTOR

作　　者：龙新峰[1] 廖葵[1] 

机构地区：[1]华南理工大学传热强化与过程节能教育部重点实验室,广东广州510640

出　　处：《热力发电》2008年第11期59-63,共5页Thermal Power Generation

基　　金：广东省自然科学基金资助项目(020875)

摘　　要：氨基热化学储能方法为纯太阳能热发电的稳定性和不间断性提供了一条有效途径。介绍了氨基热化学储能的基本原理,在此基础上建立了放热反应器(氨合成反应器)的数学模型,定量分析和讨论了在一定设计压力和氢氮比条件下,进气温度和进气流率对反应的影响,给出了实现火用最优化和热能最大化的操作参数,并比较了最优火用和最大热能的关系。模拟结果表明,反应器内催化床层的平均温度是实现火用和能量最大化的最重要调节参数,反应温度为850℃时输出最大火用,反应温度为650℃时输出最大热能。The ammonia- based thermoehemical energy- storing method is an effective way for stable and continuous thermal power generation by using solar energy. The basic principle of ammonia - based thermochemieal energy - storing reactor has been presented. Based on the said principle,a mathematical model of an exothermic reactor （ammonia sythesis reactor）has been established, the influence of reaetor＇s inlet gas temperature and reactant＇s flow rate upon the ammonia synthesis reaction under condition of definite designed pressure and hydrogen nitrogen ratio being quantitatively analysed and diseussed,giving out operating parameters for realizing exergy optimization and thermal energy maximization. The relationship between optimal exergy and maxinum thermal energy has been also eompared. Result of simulation shows that the average temperature of catalytic bed layer in the reactor is an most important control parameter to realize optimal oxergy and maximum thermal energy, the maximum exergy output and maximum thermal energy out- put ean he obtained under reaction temperature of 850 ℃ and 650 ℃ respectively.

关 键 词：热化学储能 太阳能 热发电 高温蓄热 放热反应器 热能 

分 类 号：TB34[一般工业技术—材料科学与工程]