Preparation method of ultrahigh-voltage converter transformer oil

• Main Authors: WANG WEI, LU JUNQING, REN SHUAI, LIU ZHAOZHAO, MA ZHONGYIN, WANG SHUKUAN, BAI YUNGANG, YANG JUN, WANG SHENGLONG
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2023
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; 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

The invention discloses a preparation method of ultrahigh-pressure converter transformer oil, which comprises the following steps: by taking full fractions of high-temperature and medium-low-temperature coal tar as raw materials, continuously producing base oil and aromatic oil of transformer oil through the same raw material and a set of industrial equipment by using a suspended bed-fixed bed combined hydrogenation process, and finally adding an antioxidant, thereby obtaining the ultrahigh-pressure converter transformer oil. The obtained transformer oil is excellent in gassing resistance, has obvious advantages in low-temperature performance and oxidation resistance compared with transformer oil in the market, and is high in raw material adaptability, flexible to operate and small in addition amount, the catalyst is added online, and the comprehensive performance of the prepared ultrahigh-voltage converter transformer oil is improved. According to the method disclosed by the invention, a processing method fo