加压热重分析仪快速升温方法的研究  

A Fast Heating Method to Pressurized Thermogravimetric Analyzer(PTGA)

作　　者：汪印[1] 崔鑫[1] 周琦[1,2] 许光文[1] 

机构地区：[1]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《应用基础与工程科学学报》2011年第6期938-946,共9页Journal of Basic Science and Engineering

基　　金：国家科技创新方法专项基金(2008IM041000);中科院重大装备研制项目;煤燃烧国家重点实验室开放基金(FSKLCC0804)

摘　　要：利用研制的移动式电阻加热炉、并与固定式电阻加热炉及红外加热炉比较,开发了一种快速升温、恒温稳定性好、能够适用于加压热重分析仪(PTGA)的快速升温技术(升温速率>200℃/min).结果表明:红外加热虽然升温速率最大,但在恒温段的热稳定性较差,移动式电阻加热兼具升温速率大和恒温段热稳定性好的优点,不锈钢模拟反应器的升温速率可达216℃/min.采用移动式电阻加热快速升温方式,在不同加热终温(500℃—900℃)、不同压力(0.5—3.0MPa)及不同通气量(0.1—2.0L/min)的条件下,加压反应器内的压力波动非常小,说明移动式电阻加热快速升温方式应用于加压热重分析仪是可能的.A movable electric furnace was used to develop a fast heating method （ 〉 200℃/min） which can be applied to the pressurized thermogravimetrie analyzer and with good heat stability at constant temperature stage. A fixed electric furnace and an infra-red furnace were also used for comparisons. The results showed that the infra-red furnace had the fastest heating rate, but its heat stability was worse at the constant temperature stage. The movable electric furnace had not only faster heating rate but also good heat stability, and realized 216℃/min of heating rate to a stainless tubal reactor. Under different heating terminal temperatures （500℃- 900℃ ）, pressures （0.5-3.0MPa） and gas flow rates （0.1-2.0L/min）, the pressures in the stainless tubal reactor hardly fluctuated. These results suggest that it possible to adopt the movable electric heating technique for PTGA.

关 键 词：加压热重分析仪 快速升温 移动式电阻加热 红外加热 

分 类 号：TH831[机械工程—仪器科学与技术]