Pyrolysis characteristics of rubber compositions in medical waste  

作　　者：邓娜 王维维 陈广武 张彦 张于峰 马洪亭 

机构地区：[1]School of Environmental Engineering, Tianjin University [2]Key Laboratory of Efficient Utilization of Low and Medium Grade Energy of Ministry of Education (Tianjin University)

出　　处：《Journal of Central South University》2013年第9期2466-2471,共6页中南大学学报（英文版）

基　　金：Project(50378062)supported by the National Natural Science Foundation of China;Project(09JCYBJC08100)supported by the Natural Science Foundation of Tianjin Municipality,China;Project supported by Key Laboratory Program of the Ministry of Education,China

摘　　要：Thermogravimetric study of rubber compositions （operating glove and catheter） in medical waste was carried out using the thermogravimetric analyser （TGA）,at the heating rate of 20 ℃/min in a stream of N2.The results indicate that the decomposition process of operating glove appears an obvious mass loss stage at 250-485 ℃,while catheter has two obvious stages at 240-510 ℃ and 655-800 ℃,respectively; both samples present endothermic pyrolysis reaction; the decomposition of operating glove and the first mass loss stage of catheter are in agreement with natural rubber pyrolysis; the second mass loss stage of catheter corresponds to CaCO3 decomposition.Based on the experimental results,a novel two-step four-reaction model was established to simulate the whole continuous processes,which could more satisfactorily describe and predict the pyrolysis processes of rubber compositions,being more mechanistic and conveniently serving for the engineering.Thermogravimetric study of rubber compositions(operating glove and catheter)in medical waste was carried out using the thermogravimetric analyser(TGA),at the heating rate of 20°C/min in a stream of N2.The results indicate that the decomposition process of operating glove appears an obvious mass loss stage at 250 485°C,while catheter has two obvious stages at 240 510°C and 655 800°C,respectively;both samples present endothermic pyrolysis reaction;the decomposition of operating glove and the first mass loss stage of catheter are in agreement with natural rubber pyrolysis;the second mass loss stage of catheter corresponds to CaCO3decomposition.Based on the experimental results,a novel two-step four-reaction model was established to simulate the whole continuous processes,which could more satisfactorily describe and predict the pyrolysis processes of rubber compositions,being more mechanistic and conveniently serving for the engineering.

关 键 词：medical waste RUBBER operating glove CATHETER PYROLYSIS MODEL 

分 类 号：X799.5[环境科学与工程—环境工程]