悬浮条件下高岭土捕集含K气体成分的特性  

Characteristics of K-containing Gas Capture by Kaolin Under Suspension Condition

作　　者：孙权 戚振贤 朱晨婷 盛昌栋[1] SUN Quan;QI Zhenxian;ZHU Chenting;SHENG Changdong(School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《工程热物理学报》2022年第8期2098-2105,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金联合基金重点项目(No.U1910214)。

摘　　要：在悬浮燃烧的高温条件下,探究反应温度、高岭土特性、反应物中K/(Al+Si)摩尔比即高岭土添加量和烟气中不同含K成分对高岭土K捕集性能的影响。结果表明:高岭土特性对于K捕集性能有较大影响,其主要与产物熔融烧结和高岭土粒径有关。通过观察K捕集量、K转化率随K/(Al+Si)比的变化,发现高岭土添加量满足理论化学反应当量比时为最佳添加量。两种高岭土对KOH的捕集性能远高于其对KCl和K_(2)SO_(4)的性能,推测与反应机理和主要气相成分有关。The reaction temperature, kaolin characteristics, the molar ratio of K/(Al+Si) in reactants or the mass of added kaolin and different K-containing gas on the capacity of K capture by kaolin were investigated under the high temperature conditions of suspension combustion. The results show that kaolin characteristics have a great influence on K capture capacity, which is mainly related to the product melting and sintering and the kaolin particle size. By observing the tendency of K capture amount and K conversion with the molar ratio of K/(Al+Si), it is found that the optimum addition amount is when the kaolin addition meets the theoretical chemical reaction equivalence ratio. The capture performance of the two kinds of kaolin for KOH is much better than that for KCl and K_(2)SO_(4), which is supposed to be related to the reaction mechanism and the main gas phase components.

关 键 词：悬浮燃烧 碱金属捕集 高岭土 生物质 

分 类 号：TK6[动力工程及工程热物理—生物能] X513[环境科学与工程—环境工程]