摘要
从馏分油中脱除环烷酸是石油炼制的一个重要步骤。针对传统碱洗电精制工艺存在碱和酸用量大、乳化严重、能耗高及环境危害大等缺点,开发了馏分油脱酸剂技术。其中,Ⅰ型技术主要用于各种高酸(度)值、高密度和高黏度的常压馏分油与减压馏分油的脱酸精制。Ⅱ型技术主要应用于酸度小于100mgKOH/100mL的轻柴油的脱酸精制。Ⅲ型技术还处于实验研究阶段,确定的适宜操作条件为:反应温度20～70℃、脱酸剂用量为待处理原料油质量的2.0%。在此条件下,所得精制柴油的酸度为0.2mgKOH/100mL,精制油质量收率达99.8%。与其他工艺相比,Ⅲ型技术使用强碱溶剂脱酸,剂油比低至2.0%,聚结温度低,能耗低,无废水排放,有利于环保;同时碱渣油含量显著降低,环烷酸质量也有所提高,粗酸值达到186.2mgKOH/g,油含量仅11%。目前正在进行真正意义上的绿色脱酸工艺实验研究。
Removing naphthenic acid from distillate is an important process in refining crude oil.To overcome the defects of traditional alkali wash electric refining process such as large consumption of alkali and acid, excessive emulsification,high energy consumption and pollution to the environment,technicians have developed distillate deacidification agent technologies.Technology Ⅰ is mainly used in the deacidification of high-acidity, high-density and high-viscosity atmospheric and vacuum distillate.Technology Ⅱ is mainly used in the deacidification of light diesel oil with acidity less than 1 00mgKOH/100mL.Technology Ⅲ is still in the exper- imental stage ,the operating conditions of which are：reaction temperature 20-70℃; ;the amount of deacidification agent used is 2% （mass） of feed oil to be processed.The acidity of diesel oil produced under these con- ditions is 0.2mgKOH/100mL and the yield of refined oil is 99.8%（mass）.Unlike other technologies,technologyⅢ uses strong alkali solvent for deacidification.Its solvent-oil ratio is as low as 2%.The technology is char- acterized by low aggregation temperature,high energy efficiency,zero wastewater discharge and environmental friendliness.In addition,the technology can significantly reduce the content of alkali residual oil and improve the quality of naphthenic acid：the acidity of raw naphthenic acid reaches 186.2mgKOH/g and the oil content is only 11%.These technicians are researching real sense of green deacidification technology
出处
《中外能源》
CAS
2010年第2期71-75,共5页
Sino-Global Energy
关键词
馏分油
环烷酸
脱酸
剂油比精制油收率绿色工艺
distillate
naphthenic acid
deacidification
solvent-oil ratio
refined oil yield
green technology
