Method for preparing high-performance lubricating oil additive by deeply processing petroleum heavy oil

Abstract

The invention relates to a method for preparing a high-performance lubricating oil additive by deeply processing petroleum heavy oil. According to the technical scheme, the method comprises the following steps: 1) adding metal elements to petroleum heavy oil in order to increase the forming speed of nano carbon liquid crystal balls; 2) charging heavy oil into a thermal polymerizing circulating pipe through a pump; vacuumizing; and forming nano carbon liquid crystal balls in the petroleum heavy oil by the thermal polymerizing reaction; 3) removing impurities such as No, O and S in the heavy oilby hydrofining cracking; splitting some light components, intermediate components and heavy components, wherein most of the nano carbon liquid crystal balls are dissolved in the intermediate components; and 4) treating the oily liquid as the high-performance lubricating oil additive. The method has the beneficial effects that the intermediate components subjected to hydrofining cracking are treated by removing the impurities such as N, O and S in the heavy oil, and then the oily liquid is treated as the high-performance lubricating oil additive; the method is simple in preparation processes,energy saving, environmentally friendly, and easy to popularize; and a new way is provided for development and utilization of the petroleum heavy oil.

Description

technical field [0001] The invention relates to a lubricating oil additive, in particular to a method for preparing a high-performance lubricating oil additive through deep processing of petroleum heavy oil. Background technique [0002] Lubricating oil is widely used in the national economy, especially in the machinery industry. In the 21st century, many working conditions have exceeded the use limit of conventional lubricating oils, and there is an urgent need for high-temperature lubricating oils to meet the harsh operating environments. In order to improve the performance of lubricating oil, solid lubricating additives are often added to lubricating oil, generally including graphite, molybdenum disulfide, tungsten disulfide and polytetrafluoroethylene. However, the problem is that when graphite is used in an oxygen-containing environment higher than 325 °C, the boundary carbon atoms are easy to react with oxygen and oxidize to form carbon dioxide, so that the surface st...

AI Technical Summary

Problems solved by technology

However, the problem is that when graphite is used in an oxygen-containing environment higher than 325 °C, the boundary carbon atoms are easy to react with oxygen and oxidize to form carbon dioxide, so that the surface structure of graphite changes and loses its lubricating effect. Dispersion, cracking or even collapse at the edge will reduce the timeliness of graphite use; both molybdenum disulfide and tungsten disulfide are easy to react with oxygen at high temperature to form sulfur, so when sulfur reacts with water vapor to produce sulfuric acid, It may corrode the metal objects and oil seals in the machine, and cause damage to the machine

But it has not announced the preparation method of the nano-carbon spheres, let alone the method for preparing the nano-carbon spheres from petroleum heavy oil