Base oil of transformer oil and preparation method thereof

• Main Authors: SONG JUNHUI, KIM GIL-HAE, XU YANFENG, ZHANG CUIZHEN, ZHEN TAO, JIAO ZUKAI, GUO SHASHA, ZHANG DUO, LIU LIZHI, XU HAILONG, YAO XIUJIE, YAN JINLONG
• Format: Patent
• Language: Chinese; English
• Published: 29.11.2022
• Subjects: ADHESIVES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; DYES; FUELS; LUBRICANTS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINERAL WAXES; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLISHES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to transformer oil base oil and a preparation method thereof, the preparation method comprises the following steps: (1) mixing raw material oil with hydrogen, and carrying out hydrotreatment to obtain hydrotreatment generated oil; (2) mixing the hydrotreated generated oil with hydrogen, and carrying out hydrodewaxing treatment under the action of a hydrodewaxing catalyst to obtain hydrodewaxed generated oil; and (3) mixing the hydrodewaxing generated oil with hydrogen, carrying out refining treatment, and carrying out fractionation at the temperature of more than 275 DEG C to obtain the transformer oil base oil. The preparation method provided by the invention can be used for preparing the transformer oil base oil with the characteristics of low sulfur, low nitrogen, low condensation and low aromatics, and meets the requirements of T-40 DEG C transformer oil (general) base oil in the GB2536-2011 standard. 本发明涉及一种变压器油基础油及其制备方法，所述制备方法包括如下步骤：(1)将原料油与氢气混合，进行加氢处理，得到加氢处理生成油；(2)将所述加氢处理生成油与氢气混合，