石油炼制与化工

• 加工工艺 • 上一篇    下一篇

高黏度减五线馏分油NMP精制中试研究

李晓鸥1,陈镇2,李东胜1,翟玉春3   

  1. 1. 东北大学材料与冶金学院;辽宁石油化工大学
    2. 辽宁石油化工大学
    3. 东北大学材料与冶金学院
  • 收稿日期:2011-01-04 修回日期:1900-01-01 出版日期:2011-07-12 发布日期:2011-07-12
  • 通讯作者: 陈镇

A PILOT PLANT STUDY OF NMP SOLVENT REFINING OF HIGH VISCOSITY VGO

Chen Zhen   

  • Received:2011-01-04 Revised:1900-01-01 Online:2011-07-12 Published:2011-07-12
  • Contact: Chen Zhen

摘要: 以大庆、沈北混合高黏度减五线馏分油为原料,在小型试验的基础上,进行了4组不同条件下的NMP精制中型试验。结果表明:中型操作条件下的精制油在脱蜡后,其质量均满足500SN的产品质量要求;在无水和含水为2.0%,剂油体积比为0.75和1.38条件下精制深度可以满足HVIS中500SN的要求;在含水为1.5%,剂油体积比1.40条件下精制深度可以满足HVIW中500SN的要求;在含水为2.5%,剂油体积比为1.51条件下产品质量除氧化安定性不能满足要求外,其它质量指标均能满足HVIW中500SN的要求。随着溶剂中水含量的增加,需增大剂油比来满足精制深度要求。

关键词: 润滑油, 溶剂精制, N-甲基吡咯烷酮, 减压馏分油

Abstract: Bench scale tests of N-methyl pyrrolidone (NMP) solvent refining were carried out using high-viscosity 5th vacuum side cut of Daqing and Shenbei mixed crude as feedstock. Optimum operation conditions of single stage extraction and solvent dewaxing were obtained. Based on the above results pilot plant tests were conducted under four various operation conditions. Results showed that under the pilot plant operation conditions, the qualities of the obtained refined oil samples after solvent dewaxing could basically meet the requirements of lube base oil 500SN. With the increase of water content in NMP solvent, in order to obtain deep refining, the volume ratio of solvent to oil (S/O) should be increased, such as with a water content of 0 and 2.0% in NMP solvent, at a S/O volume ratio of 0.75 and 1.38 respectively, HVIS 500SN base oil could be obtained; with a NMP water content of 1.5%, at a S/O volume ratio of 1.40, HVIW 500SN base oil could be obtained; with a water content of 2.5%, at a S/O volume ratio of 1.51, the obtained product could meet the requirements of HVIW 500SN base oil except oxidation stability.

Key words: Lubricating oil, solvent refining, N-methyl pyrrolidone (NMP), vacuum distillates