油品储罐中硫腐蚀产物氧化自燃行为

Spontaneous Combustion Behavior of Sulfur Corrosion Products in Oil Tank

采用自建实验系统，模拟了焦化汽油、焦化柴油和高硫原油储罐硫腐蚀产物，使其与O2发生氧化反应，研究了油品储罐中硫腐蚀产物自然氧化过程的规律。结果表明，3种储罐中，焦化汽油储罐硫腐蚀产物产生的时间最慢，周期最长。在O2体积分数7．8％～18．2％的情况下，高硫原油储罐硫腐蚀产物的氧化反应过程分为初级、中级和完全氧化3个阶段；焦化柴油储罐硫腐蚀产物在O2体积分数低于13．2％时，只停留在初级氧化反应阶段；焦化汽油储罐硫腐蚀产物的氧化危险性相对较小。O2体积分数越高，油品储罐硫腐蚀产物的自燃危险性越大。

To study the natural oxidation tendency of sulfur corrosion products in oil tank, the sulfuration experiment equipment was built. Through the experiment of oxidizing reaction with O2 of simulated sulfur corrosion products in gasoline, diesel and high sulfur crude oil storage tanks, the law of the natural oxidation process was explored. The experimental results showed that the sulfur corrosion products in the gasoline tank were produced slowest for the longest cycle among these in the three tanks. When the oxygen volume fraction was between 7.8%- 18.2%, the oxidation process of the sulfur corrosion products in high sulfur crude oil tank could be divided into three stages, which were primary oxidation stage, the secondary oxidation stage and the deep oxidation. When the oxygen volume fraction was below 13.2%, the oxidation of the sulfur corrosion products in diesel fuel tank only stayed in primary oxidation stage, while the oxidation risk of sulfur corrosion product in the gasoline tank was relatively small. The higher oxygen volume fraction, the greater combustion risk of sulfur corrosion products.