Abstract: Air injection low temperature oxidation reaction of heavy oil has been simulated in the highpressure reactor to study the oxidative mechanism of the reaction without or with catalyst. The before and after oxidation changes of oxygen content in tail gas and products of heavy oil were detected using TY3160type oxygen analyzer and NDJ4Atype potentiometric titrator, respectively. The results show that the using of transition metal salt as primary catalyst not only accelerates the oxidizing reaction, but also affects the selectivity of oxidation products. The addition of transition metal salt is helpful for the production of carboxylic acid, aldehyde and ketone, but reduces the production of alcohol. This research can provide the favorable theoretical basis for improving mining technology of air injection low temperature of heavy oil and further optimizing the design of catalyst.

Key words: Heavy oil,    , Air injection,    ,  Low temperature catalytic oxidation,   ,  Oxidation product

摘要： 在高压反应釜内模拟稠油低温氧化反应, 采用 TY - 3 1 6 0氧气分析仪检测反应前后尾气中氧含量变 化, ND J - 4 A电位滴定仪检测氧化前后稠油中氧化产物含量的变化, 通过对尾气氧含量和氧化产物定量分析, 探究非 催化和催化条件下的氧化机制。结果表明, 过渡金属盐作为主催化剂不仅加速氧化反应进行, 还影响氧化产物的选 择性, 催化反应有利于羧酸和醛酮的生成; 反之有利于醇的生成。

关键词: 稠油, 注空气, 低温催化氧化,  , 氧化产物