复合添加剂对环丁砜热稳定性的影响  

Effect of Compound Additives on the Thermal Stability of Sulfolane

作　　者：胡丹[1] 陈文艺[1] 赵金[1] 邹恺[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《石油化工》2013年第3期312-315,共4页Petrochemical Technology

基　　金：辽宁省教育厅基金项目(2007T106)

摘　　要：考察了单乙醇胺与碱性添加剂H,N-M,2-t-B复配前后对环丁砜热稳定性的影响,以SO2的释放量作为环丁砜热稳定性的评价指标。实验结果表明,在环丁砜用量100 g、氮气流量80 mL/min、反应温度230℃、反应时间2 h的条件下,当单乙醇胺用量为环丁砜质量的0.04%时,SO2释放量最少,为16.48 mg,抑制环丁砜受热分解的效果最好。当单乙醇胺与碱性添加剂复配后,复合添加剂抑制环丁砜受热分解的效果优于单独添加单乙醇胺的效果;4种添加剂对环丁砜热稳定性的影响由大到小的顺序为:单乙醇胺>H>N-M>2-t-B。将4种添加剂复配,当单乙醇胺、H、2-t-B、N-M的用量分别为环丁砜质量的0.03%,0.06%,0.10%,0.06%时,复合添加剂对环丁砜热分解的抑制效果最佳,SO2释放量最少,为5.49 mg。The effects of the complex of monoethanolamine and alkaline additives（H, N-M and 2-t-B） on the thermal stability of sulfolane were investigated using the release amount of SO2 as the evaluating indicator. The results show that under the optimal reaction conditions of sulfolane dosage 100 g, nitrogen flowrate 80 mL/min, reaction temperature 230 ℃, reaction time 2 h and additive monoethanolamine dosage 0.04%（based on the mass of sulfolane）, the additive reveals a good inhibitory effect with the release amount of SO2 16.48 mg. The complex additives are better than the single monoethanolamine in restraining sulfolane thermal decomposition. The influence order of the additives on the thermal stability of sulfolane is monoethanolamine〉H〉N-M〉2-t-B. When the dosages ofmonoethanolamine, H, 2-t-B and N-M are 0.03%, 0.06%, 0.10% and 0.06%（based on the mass of sulfolane） respectively, the inhibitory effect is optimum with the release amount of SO2 5.49 mR.

关 键 词：环丁砜 添加剂 单乙醇胺 热分解 热稳定性 

分 类 号：TQ028[化学工程]