Process for producing lubricant base oil by adding of high-sulfur oil

Abstract

The invention belongs to the technical field of lubricant production and discloses a process for producing lubricant base oil by adding of high-sulfur oil. The process is characterized in that a raw material tank (1) is provided with a high-sulfur oil inlet, a gas-liquid separation system is arranged at a discharging end of a second reactor (6), and a liquid output end of the gas-liquid separationsystem is sequentially connected with a hydrogen sulfide stripping tower (12), a zinc oxide desulfurization tower (13), a cutting tower (14) and a reboiler furnace (15). Vulcanized catalysts are adopted, and high-sulfur oil accounting for 5%-7% of the mass of raw material oil for producing the lubricant base oil is added into the raw material tank (1). Adding the high-sulfur oil for producing thelubricant base oil under the action of WS3, NiS and MoS3 catalysts is realized, noble metal catalyst production input is sharply reduced, and accordingly economic operation is realized.

Description

technical field [0001] A process for producing lubricating oil base oil by adding high-sulfur oil belongs to the technical field of lubricating oil production. Background technique [0002] Lubricating oil hydrogenation refers to the deep processing of lubricating oil and hydrogen into polycyclic aromatic hydrocarbons with ideal components under a certain temperature and hydrogen pressure, removing heterocyclic compounds, ring-opening isomerization of aromatic hydrocarbons and naphthenic hydrocarbons, improving oil quality and generating high Process for quality lube base oils. At present, lubricating oil hydrogenation mainly adopts high pressure precious metal catalyst for hydrogenation production. [0003] At present, the hydrogenation of lubricating oil mostly adopts precious metal catalysts such as Pt, Pd, Rh, etc., but the current process of hydrogenating lubricating oil to produce lubricating oil base oil has the following shortcomings. [0004] 1. Compared with meta...

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Problems solved by technology

[0004] 1. Compared with group VIII W, Mo, Ni and other metal catalysts, noble metal catalysts are expensive and costly

[0005] 2. The Group VIII vulcanized metal catalysts with relatively low prices cannot directly process low-S lubricating oil, otherwise the catalyst will easily lose S and deactivate

However, the S content in the lubricating oil raw material oil is very low, only 9ppm, and it is difficult to ensure the long-term operation of the vulcanized catalyst

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