炭化活化温度对活性炭-CaCl-_2复合吸附剂性能的影响  

Effects of Carbonization and Activation Temperatures on the Characteristics of Activated Carbon-CaCl_2 Composite Adsorbents

作　　者：陆振能[1] 卜宪标[1] 王令宝[1] 姚远[1] 龚宇烈[1] 马伟斌[1] 

机构地区：[1]中国科学院广州能源研究所,中国科学院可再生能源重点实验室,广州510640

出　　处：《新能源进展》2014年第4期305-309,共5页Advances in New and Renewable Energy

基　　金：广东省中国科学院全面战略合作项目(2012B091100263);国家科技支撑计划项目(2012BAB12B01)

摘　　要：为研究并开发高性能的吸附剂,本文以CaCl2和杉木木屑为原料,采用炭化活化造孔的方法制备复合吸附剂,考察了炭化活化温度对复合吸附剂性能的影响,炭化活化温度分别选择400℃、500℃、600℃和700℃。扫描电镜照片和元素分布图表明,复合吸附剂具有发达的孔隙结构而且CaCl2分布均匀。NH3吸附性能实验表明,吸附剂4 h的NH3吸附量随炭化活化温度的升高而增加。而对于吸附制冷而言,500℃炭化活化温度下制备的复合吸附剂具有最好的性能,其30 min的吸附量达到0.488 g/g。Composite adsorbents of activated carbon-CaCl2 were prepared by carbonized and activated of fir crumbs,which had been impregnated in CaCl2 solution for 24 h, at high temperature. Effects of carbonization and activationtemperatures on the adsorption performance of composite adsorbents were investigated in this paper, the carbonization andactivation temperatures were 400oC, 500oC, 600oC and 700oC, respectively. The scanning electron microscope （SEM）image and element distribution image illustrated that the composite absorbents have smooth surface with well-developedpore structure and CaCl2 is well-distributed in the composite adsorbents. Ammonia adsorption experiments show that,during an adsorption time of 4 h, the adsorption capacity of composite adsorbents increase as the carbonization temperaturerises. In the field of adsorption refrigeration, the most appropriate carbonization and activation temperature is 500oC andthe adsorption capacity of composite adsorbent prepared at this temperature can be reached 0.488 g/g within 30 min.

关 键 词：吸附制冷 复合吸附剂 炭化温度 活化温度 

分 类 号：TK511.3[动力工程及工程热物理—热能工程] TB64[一般工业技术—制冷工程]