高压加氢生产环烷基变压器油的中型试验研究

以绥中36-1常二线馏分油为原料, 在中型装置上模拟工业三段高压加氢装置流程进行试验, 验证该工艺能否生产满足 GB 2536-2011 中 I-30℃（特殊级别）标准要求的变压器油，考察不同工艺操作参数对油品性能的影响。结果表明：三段加氢装置合适的工艺条件为反应压力 15.0MPa，加氢处理的体积空速0.5/h、氢油体积比1 000:1、温度340~360 ℃，临氢降凝的体积空速1.5/h、氢油体积比1 000:1、温度350~360 ℃，加氢补充精制的体积空速0.5/h、氢油体积比600:1、温度200~210 ℃；在上述条件下得到的变压器油基础油具有优良的低温性能、优异的抗氧化性能，各项性能均满足 GB2536-2011 中 I-30 ℃ 特殊级别指标要求；添加复合剂后制成的变压器成品油的各项指标优于国内外知名品牌油品或与其相当，在低温性能、抗氧化性能等方面具有明显优势。绥中361常二线馏分油可以通过高压加氢生产变压器油。

PILOT TEST OF PRODUCING NAPHTHENIC TRANSFORMER OIL BY HIGH PRESSURE HYDROGENATION

Pilot tests of atmospheric distillate No.2 from Suizhong 36-1 crude were conducted to produce a special grade (I-30 ℃) transformer oil to meet GB 2536-2011 specifications by a process which simulates the Shell three high pressure hydroprocessing, and to study the effect of different process parameters on the performance of the transformer oil. The results indicate that a high quality transformer oil with excellent low temperature flow properties and antioxidant properties can be produced under the following conditions: Space velocity of 0.5/h, Gas/oil ratio of 1 000:1 and temperature of 340-360 ℃ for hydrotreating, Space velocity of 1.5/h, Gas/oil ratio of 1 000:1 and temperature of 350-360 ℃ for hydrodewaxing, Space velocity of 0.5/h, Gas/oil ratio of 600:1 and temperature of 200-210 ℃ for hydrofinishing. With addition of an additive package, the resulting transformer oil has all properties meeting GB 2536-2011 specifications, better than well-known brands of oil or its equivalent. The transformer oil can be made from atmospheric No.2 side cut of Suizhong 36-1 crude by high-pressure hydrogenation.