一种脱铁脱钙剂在焦化汽油柴油中应用研究

采用静态和动态实验方法对高含酸、含铁原油的焦化汽油和柴油进行脱铁、脱钙试验，脱铁、脱钙剂采用脱铁效果好的RP-DF(1)。实验考察了注水率、脱铁温度、剂铁质量比、注水水质等因素对脱铁效果的影响，在注水率10％、脱铁温度110℃、剂铁质量比14、注水为蒸馏水或新鲜水时，脱后油含铁可达到小于1.5μg/g的要求，并且RP-DF(1)对焦化汽油和柴油中的钙也有很好的脱除效果。经脱铁、脱钙处理后混合油的其它性质不发生改变，脱后油满足后续加氢工艺的要求。

THE APPLICATION OF IRON AND CALCIUM REMOVAL AGENT IN COKER DISTILLATES

Coker distillates (mixed coker gasoline and diesel fractions) from crude oil with high acid, iron and calcium content were treated by RP-DF(1) agent to remove iron and calcium. Static and dynamic experiments were carried out and the effects of reaction conditions, such as temperature, the mass ratio of agent to iron, the types of water injected and the water injection rate, on the iron removal were investigated. It was found that under the conditions of using distilled water or fresh water with a water injection rate of 10%, a reaction temperature of 110℃ and the agent to iron mass ratio of 14, the iron content of the treated coker distillates could be less than 1.5 μg/g, besides, calcium in the distillates was removed as well. The other properties of the treated distillates remained unchanged and it could well meet the requirements of downstream hydroprocessing.