Lubricating oil additive

Abstract

The invention relates to a lubricating oil additive. According to a technical scheme in the invention, a preparation method for the lubricating oil additive comprises the following steps: 1) adding ametal element into the petroleum heavy oil to accelerate the forming speed of nanometer carbon liquid crystal balls; 2) pumping the heavy oil into a thermal polymerization circulating pipe by using apump, carrying out vacuumizing, and forming nanometer carbon liquid crystal balls in the petroleum heavy oil through a thermal polymerization reaction; 3) carrying out hydrofining cracking to remove N, O and S impurities in the heavy oil and crack out a part of light components, medium components and heavy components, wherein most of the nanometer carbon liquid crystal balls are dissolved in the medium components; and 4) applying oily liquid obtained in the previous step as a high-performance lubricating oil addictive. The preparation method of the invention has the beneficial effects that thehigh-performance lubricating oil addictive can be obtained by directly removing impurities such as N, O, S and the like from heavy oil in hydrofined and cracked middle components; preparation processis simple, energy-saving, and environment-friendly; and the preparation method is easy to popularize, and provides a new way for development and utilization of petroleum heavy oil.

Description

technical field [0001] The invention relates to a lubricating oil additive, in particular to a preparation method of the lubricating oil additive. 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 structure of graphite changes and loses its lubricating effect....

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