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Preparation method of anti-oxidative natural gas engine lubricating oil

A natural gas and engine technology, applied in the field of preparation of natural gas engine lubricating oil, can solve the problems of low oxidation resistance and nitrification resistance, and achieve the effects of good nitrification resistance, good oxidation resistance and good performance

Active Publication Date: 2016-02-03
DONGYING HAOMING LUBRICATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN104357189A discloses a bio-composite lubricating oil for a natural gas engine, comprising the following parts by weight: 50-60 parts of base oil, 0.1-1.5 parts of pour point depressant, 0.5-3 parts of anti-oxidant and anti-gel agent, 0.1-3 parts of pour point depressant 1.5 parts, 0.5-1.5 parts of dispersant, 0.1-0.7 parts of rust inhibitor, 1-3 parts of thickener, 3-5 parts of boronated polyisobutenyl succinimide, 0.1-0.5 parts of antifoaming agent, three 1-5 parts of ethanolamine, the lubricating oil has low ash content, which can reduce the formation of sludge and carbon deposits; but the lubricating oil has the problem of low oxidation resistance and nitrification resistance

Method used

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  • Preparation method of anti-oxidative natural gas engine lubricating oil
  • Preparation method of anti-oxidative natural gas engine lubricating oil

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Step 1: In parts by weight, take the kinematic viscosity at 100°C as 1-5mm 2 100 parts of mineral oil per s, 5 parts of epoxidized soybean oil, and 3 parts of α-olefin oxide, after mixing evenly, heat and reflux for heat preservation at a heating temperature of 40°C, reflux for 1 hour, and let cool;

[0032]Step 2: Add 5 parts of hydrogenated castor oil, 1 part of dibutyl succinate, 0.3 part of sorbitan monooleate to the mixture prepared in step 1, and the range of alkali value is 250-300mgKOH / g sulfurized calcium alkylphenate 0.4 part, coconut oil fatty acid diethanolamide 0.2 part, rust inhibitor 0.1 part, cloud removing agent 0.2 part, demulsifier 0.1 part, metal deactivator 0.3 part, friction modifier 0.1 part , 0.4 parts of pour point depressant, 0.2 part of defoamer, 0.2 part of co-solvent, 0.2 part of corrosion inhibitor, 0.2 part of dye, 0.2 part of extreme pressure agent. 2 hours, let cool and serve.

Embodiment 2

[0034] Step 1: In parts by weight, take the kinematic viscosity at 100°C as 1-5mm 2 150 parts of mineral oil per s, 10 parts of epoxidized soybean oil, and 5 parts of α-olefin oxide, after mixing evenly, heat and reflux for heat preservation at a heating temperature of 60°C, reflux for 2 hours, and let cool;

[0035] Step 2: Add 10 parts of hydrogenated castor oil, 2 parts of dibutyl succinate, 1 part of sorbitan monooleate to the mixture prepared in step 1, and the range of alkali value is 250-300mgKOH / g of sulfurized calcium alkylphenate 0.6 part, coconut oil fatty acid diethanolamide 0.4 part, rust inhibitor 0.1 part, cloud removing agent 0.2 part, demulsifier 0.1 part, metal deactivator 0.3 part, friction modifier 0.1 part , 0.4 parts of pour point depressant, 0.2 part of defoamer, 0.2 part of co-solvent, 0.2 part of corrosion inhibitor, 0.2 part of dye, 0.2 part of extreme pressure agent, mix well, heat and reflux heat preservation, heating temperature 60 ℃, reflux heat ...

Embodiment 3

[0037] Step 1: In parts by weight, take the kinematic viscosity at 100°C as 1-5mm 2 120 parts of mineral oil per s, 8 parts of epoxidized soybean oil, and 4 parts of α-olefin oxide, after mixing evenly, heat and reflux for heat preservation at a heating temperature of 50°C, reflux for 2 hours, and let cool;

[0038] Step 2: Add 8 parts of hydrogenated castor oil, 2 parts of dibutyl succinate, 0.5 part of sorbitan monooleate to the mixture prepared in step 1, and the range of alkali value is 250-300mgKOH / g of sulfurized calcium alkylphenate 0.5 part, coconut oil fatty acid diethanolamide 0.3 part, rust inhibitor 0.1 part, cloud removing agent 0.2 part, demulsifier 0.1 part, metal deactivator 0.3 part, friction modifier 0.1 part , 0.4 parts of pour point depressant, 0.2 parts of defoamer, 0.2 part of co-solvent, 0.2 part of corrosion inhibitor, 0.2 part of dye, 0.2 part of extreme pressure agent, mix well, heat and reflux heat preservation, heating temperature 55 ℃, reflux heat...

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Abstract

The invention relates to a preparation method of anti-oxidative natural gas engine lubricating oil and belongs to the technical field of lubricating oil. The preparation method comprises the steps that 100-150 parts of base oil, 5-10 parts of epoxidized soybean oil and 3-5 parts of alpha-olefin oxide are taken and mixed uniformly, then heating, reflux and heat preservation are performed, and standing is performed for cooling; 5-10 parts of hydrogenated castor oil, 1-2 parts of succinic acid dibutyl, 0.3-1 part of sorbitan mo-nooleate, 0.4-0.6 part of sulfurized calcium alkyl phenate, 0.2-0.4 part of coconut oil fatty acid diethanolamide and 2-6 parts of a lubricating oil additive are added into the mixture prepared in the step 1, and uniform mixing, heating, reflux, heat preservation and standing for cooling are performed to obtain the lubricating oil. The lubricating oil applied to natural gas engines has better oxidation resistance and nitrification resistance.

Description

technical field [0001] The invention relates to a preparation method of anti-oxidation natural gas engine lubricating oil, which belongs to the technical field of lubricating oil. Background technique [0002] Engine lubricating oil is generally composed of base oil and additives. The base oil is mostly refined mineral oil, and the base oil of high-grade lubricating oil is synthetic oil or base oil blended with mineral oil and synthetic oil. Due to the high temperature, high pressure, high speed and heavy load generated when the engine is working, it will act on the engine oil, and the engine fuel and combustion exhaust gas will also corrode the engine oil. Therefore, the engine oil must have appropriate dryness and good viscosity temperature. It must have good cleaning and dispersing properties, as well as good acid neutralization, oxidation stability, anti-wear properties, anti-foaming properties, anti-corrosion and anti-rust properties, etc. In order to make the engine ...

Claims

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Application Information

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IPC IPC(8): C10M141/06C10M169/04C10N30/10C10N40/25
Inventor 赵允山明艳辉韩宇婷李晓瑄
Owner DONGYING HAOMING LUBRICATION TECH CO LTD
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