氧化-络合萃取法脱除重质燃料油中硫化物

Desulfurization of heavy fuel oil by oxidation-complexation extraction

以2种不同的重质燃料油为原料，采用氧化-络合萃取法进行硫化物脱除的单因素与正交实验研究。结果表明，在氧化剂与催化剂体积比为0．7，氧化剂与催化剂体积分数为10．1％，氧化温度为80％，氧化时间为60min，络合剂质量分数为0．4％，萃取剂体积分数为1．2，络合萃取温度为84．2℃，络合萃取时间为10min，水的质量分数为1．7％的条件下，1^#燃料油精制油硫的质量分数为0．5％，收率为94．9％。在氧化剂与催化剂体积比为0．7，氧化剂与催化剂体积分数为10．5％，氧化温度为62℃，氧化时间为60min，络合剂质量分数为0．6％，萃取剂体积分数为1．13，络合萃取温度为79．5℃，络合萃取时间为10min，水的质量分数为1.98％的条件下，2^#燃料油精制油硫的质量分数为0．49％，收率为94．8％。氧化-络合萃取法可以深度脱除辽化燃料油中的硫化物。

Using two kinds of heavy fuel oil, which are refined from the Liaoyang petrochemical company, as raw materials, oxidation-complexation extraction is carried out to reduce the sulfur content. Single factor test and orthogonal test are performed to determine the optimal operation conditions. The results show that the sulfur content and yield of 1^# refined oil are 0. 5 wt% and 94. 9%, respectively, under the following conditions：0. 7 of the volume ratio of oxidant to catalyst （Oxi/Cat）, 10. 1% volumetric fraction of oxidant and catalyst to fuel oil （Oxi plus Cat/Oil）, 80℃ of the oxidizing temperature ,60 minutes of the oxidizing time ,0. 4% of the mass ratio of complexant to fuel oil （Corn/Oil） , 1.2 of the volume ratio of extractant to fuel oil （Ext/Oil） ,84. 2℃ of the extractive temperature, 10 minutes of the extractive time and 1.7% of the mass ratio of water to extractant （Wat/Ext）. In contrast, the sulfur content and yield of 2^# refined oil are 0. 49 wt% and 94. 8% , respectively, when the Oxi/Cat is 0. 7, the Oxi plus Cat/Oil is 10. 5% , the oxidizing temperature is 62℃, the oxidizing time is 60 minutes, the Corn/Oil is 0. 6% , the Ext/Oil is 1.13, the extractive temperature is 79.5℃ ,the extractive time is 10 minutes and the Wat/Ext is 1.98%.