摘要
研究了室温下馏分油脱酸剂技术的脱酸效果。考察了聚结过滤温度(T)、碱用量(R_1)、剂油体积比(R_2)、搅拌强度(Φ)、反应时间(t)等因素对聚结过滤脱酸效果的影响。结果表明,该方法在T为室温、R_1=1.0、R_2=2.0%、Φ=300r/min、t=40 s的实验条件下,精制后的直馏柴油酸度为0.2 mgKOH/(100 mL),收率为99.8%,且操作弹性大。室温下聚结过滤法碱渣油含量较传统碱洗电精制法、脱酸剂技术Ⅰ型、Ⅱ型均有显著降低,回收的环烷酸产品粗酸值高,油含量低。取消了高压电场,采用室温聚结过滤,脱酸工艺大大简化,避免了高温乳化和高温水解,操作成本和脱酸能耗大大降低。
Research on the deacidification of distillates under ambient temperature using deacidified agent and coalescing filter was carried out in lab and the effects of coalescing filtration temperature, alkali consumption, volume ratio of agent to oil, stirring intensity and reaction time on the acid removal were investigated. It was found that under ambient temperature with optimum operation conditions of an alkali consumption of 1.0（mole ratio of sodium hydroxide to naphthenic acid） ,an agent/ oil volume ratio of 0.02 ,a stirring intensity of 300 r/min and a reaction time of 40 s, the acid number of refined straight run diesel fuel was 0.2 mgKOH/（100 mL） and with a yield of 99.8%. The operation was flexible and the oil content of alkali waste obtained by coalescing filtration was much lower as compared with that by conventional electro-alkali refining and deacidification using deacidified agent Ⅰ or Ⅱ. The quality of naphthenic acid reached the 2^# acid standard of SH/T0530-92 with low oil content. Adopting deacidification technology with coalescing filtration under ambient temperature, the high voltage electric field was eliminated, the deacidification process was much simplified, thus the operation cost and energy consumption were reduced significantly.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2008年第12期12-15,共4页
Petroleum Processing and Petrochemicals
关键词
脱酸剂
室温
聚结过滤
环烷酸
deacidified agent
room temperature
coalescing filtration
naphthenic acid
