二元可燃混合液体自燃点的实验与理论预测  

Experimental Determination and Calculation of Auto-Ignition Temperature of Binary Flammable Liquid Mixtures

作　　者：叶龙涛 潘勇[1] 蒋军成[1] 

机构地区：[1]南京工业大学城市建设与安全工程学院江苏省危险化学品本质安全与控制技术重点实验室,江苏南京210009

出　　处：《石油学报（石油加工）》2015年第3期753-759,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21006045);江苏省自然科学基金项目(BK2010554);江苏省高校自然科学基金重大项目(12KJA620001)资助

摘　　要：为了研究二元可燃混合液体自燃点变化规律并对混合液体自燃点进行预测,采用AITTA 551自燃点测试仪测定了不同组分和配比的168组二元可燃混合液体的自燃点;根据基团贡献法原理,在纯物质自燃点理论预测模型的基础上,提出更适用于二元混合液体自燃点的预测模型,并采用多元非线性回归方法进行拟合,建立了二元可燃混合液体自燃点预测模型。模型对训练集和测试集预测的平均绝对误差分别为20.1042℃和25.9045℃,平均绝对百分误差分别为5.18%和7.25%,整体预测误差在实验允许误差范围之内。模型对烷-烷和醇-醇二元混合体系预测效果最佳,对含有苯环的混合体系预测能力一般。为可燃混合液体自燃点的理论预测提供了一种新的有效方法。In order to study and predict the auto-ignition temperature（AIT） of binary flammable liquid mixtures, the AITs of 168 binary flammable liquid mixtures composed of different components and volume ratios were measured by AITTA 551 auto-ignition temperature tester. An AIT prediction model of binary liquid mixtures was proposed on the basis of pure substance AIT prediction model according to the principle of group contribution method. The detailed model was established by multiple nonlinear regression method （MNR）. The mean absolute errors of training set and test set were 20. 1042℃ and 25. 9045%, respectively, corresponding to the mean absolute percentage errors of 5.18% and 7.25%. The predicted AITs were in good agreement with the experimental data. The AIT prediction of alkane-alkane and alcohol-alcohol systems was the best. For the mixed system containing benzene ring, the prediction ability of the model was mediocre. An effective method was provided for predicting the AIT of flammable liquid mixtures.

关 键 词：二元混合物 可燃液体 自燃点 实验 预测 

分 类 号：O621.2[理学—有机化学] X937[理学—化学]