摘要
为解决兰州炼油化工总厂生产变压器油中产生的酸渣、碱渣对环境的污染问题，研究了用溶剂萃取精制来取代原有的电化学酸碱精制工艺，萃取剂为含水的Ｎ-甲基吡咯烷酮（ＮＭＰ），含水量１％～３％，操作温度在３０～５０℃，剂油比为０．２５～０．５０，经多级革取和水洗，精制油的色号、酸值均达到与原工艺相同的半成品油的质量指标，再经低温白土精制，可生产出合格的变压器油。
Using the solvent extraction process instead of the old electrochemical acid - alkali refiningprocess was studied in order to solve the environmental pollution by acid and alkali residues from transformer oilproductioll in LPPCC. By taking N - methyl - pyrrolidone (NMP) with 1% - 3% of water content as extractant, at 30~50℃ of operating temperature and 0. 25~ 0. 50 of solvent - oil ratio, through multistage extrac.non, water washing, when foe colority and acid number of refined oil have reached the quality specification ofsemi - finished oil obtained from the electrochemical acid - alkali refining process, then through clay refining atlow -- temperature, the qualified transformer oil can be produced.
出处
《润滑油》
CAS
1999年第3期23-27,共5页
Lubricating Oil
关键词
溶剂萃取
变压器油
工艺
精制
: solvent extraction
transformer oil
acid residue
NMP
