稠油低温催化和非催化条件下氧化产物分析及机理研究

摘要

在高压反应釜内模拟稠油低温氧化反应,采用 TY-316氧气分析仪检测反应前后尾气中氧含量变化,采用NDJ-4A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,研究非催化和催化条件下的氧化机制.研究结果表明:过渡金属盐作为主催化剂不仅使氧化反应加速,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,非催化反应有利于醇的生成;稠油低温氧化条件下不易生成酚类化合物.%Simulate low temperature oxidation reaction of heavy oil in high pressure reac-tion kettle, the oxygen content in the tail gas was detected by TY-316 oxygen analyzer. The content of oxidation product in heavy oil was detected by NDJ-4A potentiometric titra-tor.The study results show that the transition metal salt as the main catalyst not only acceler-ates the oxidation reaction, but also influences the selectivity of the oxidation products. The catalytic reaction is beneficial to the formation of carboxylic acid and aldehyde ketones, non catalytic reaction is beneficial to alcohol generated;in addition, heavy oil under low tempera-ture oxidation condition is not easy to produce phenolic compounds.