LOW VISCOSITY POLY-α-OLEFIN LUBRICATING OIL AND METHOD FOR SYNTHESIZING THE SAME

• Main Authors: JIANG YAN, WANG YALI, HUO HONGLIANG, WANG GUIZHI, CHU HONGLING, LIN RUHAI, SUN ENHAO, MA KECUN, WANG SIHAN, WANG FENGRONG, YU BUWEI, WANG YULONG, TON RIU, HAN YUNGUANG, HUANG FULING, FENG LEGANG, GAO HAN, GUAN WEIHONG, WANG XIUHUI, CAO YUANYUAN, XU XIANMING, HAN XUEMEI, WANG LIBO
• Format: Patent
• Language: English; Japanese
• Published: 18.06.2020
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; MINERAL WAXES; ORGANIC CHEMISTRY; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; 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; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

To provide a method for synthesizing a low-viscosity poly-α-olefin lubricating oil that can significantly reduce operating costs due to simplicity in process, convenience in operation, and mildness in process conditions.SOLUTION: A method for synthesizing a low viscosity poly-α-olefin lubricating oil, which comprises (1) a step of dehydration treatment in which α-olefin law material is subjected to dehydration to achieve a moisture content of 10 ppm or lower, (2) a step pf polymerization reaction in which the dehydrated α-olefin raw material is polymerized in the presence of a complex catalyst and gas phase BFat a pressure of 0.01 to 1 Mpa to obtain a reaction product, (3) a step of catalyst removal in which the reaction product obtained in (2) is subjected to flash evaporation, stripping, centrifugation and washing in sequence to obtain an intermediate product, and (4) a step of post-treatment in which the intermediate product obtained in step (3) is distilled under reduced pressure to separate unreacted α-olefin raw material and α-olefin dimer from the reaction product, and remaining heavy components are subjected to hydrogenation saturation followed by fractional cutting to obtain poly-α-olefin synthetic oils with different viscosity grades.SELECTED DRAWING: Figure 1 【課題】プロセスが簡単であり、操作が便利であり、プロセス条件が温和であるため、運用コストを顕著に削減できる低粘度ポリ−α−オレフィン潤滑油の合成方法を提供すること。【解決手段】（１）脱水処理：α−オレフィン原料を原料における含水率≦１０ｐｐｍとなるように脱水処理する工程；（２）重合反応：脱水処理されたα−オレフィン原料を錯体触媒及び圧力０．０１〜１Ｍｐａの気相ＢＦ３の存在下で反応させ、反応生成物を得る工程；（３）触媒除去：工程（２）で得られた反応生成物を順にフラッシュ蒸発、ストリッピング、遠心及び洗浄処理して中間製品を得る工程；（４） 後処理：工程（３）で得られた中間製品を減圧蒸留して未反応のα−オレフィン原料及びα−オレフィン二量体を分離し、残りの重質成分を水素化飽和処理した後、更に分留カットして、粘度グレードが異なるポリ−α−オレフィン合成油を得る工程、を含む、低粘度ポリ−α−オレフィン潤滑油の合成方法。【選択図】図１