Abstract: The cause of declining water separation characteristics after adding antistatic agent into jet fuel was analyzed and it was found that the existence of some entrained basic nitrogen compounds in feed was the main reason. To solve the problem, two measures were proposed and put into practice: increase the reaction temperature of removing mercaptan by hydrogenation process to 280℃; remain the reaction temperature at 240℃ and add a clay adsorption step. Results show that both measures are effective, by adopting either one the water separation characteristics of jet fuel with antistatic agent can meet the requirement of product quality standard (not less than 70).

Key words: jet fuel, water separation characteristics, antistatic agent, hydrogenation process, clay adsorption