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Low-paint-film lubricating oil and preparation method thereof

A lubricating oil and paint film technology, applied in the field of lubricating oil, can solve problems such as equipment damage, safe production, rising oil temperature, and affecting the use of oil products

Active Publication Date: 2021-02-12
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paint film will bring many hazards, such as reducing the gap, increasing friction, and in severe cases, causing the valve core to fail in bonding operation; clogging the filter and causing poor lubrication of the equipment; Oxidation is accelerated; the paint film will adhere to solid particles, causing abrasive wear on equipment
Not only will it affect production, but it will also cause serious equipment damage and safety production accidents
[0003] Most lubricating oils in the prior art use paraffin oil, PAO, ester oil, etc. as base oils, and use tricresyl phosphate and potassium triborate as additives. The above-mentioned system is easily oxidized, and the additives will also be oxidized to produce polar substances, especially The polar substances produced by the oxidation of antioxidants cannot be dissolved in the base oil. As time goes on, the polar substances will increase, and if they are insoluble in the base oil, they will be deposited on the metal surface to form a paint film, which will affect the use effect of the oil and damage the system.

Method used

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  • Low-paint-film lubricating oil and preparation method thereof
  • Low-paint-film lubricating oil and preparation method thereof
  • Low-paint-film lubricating oil and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0049] The present invention also provides a method for preparing the low varnish lubricating oil described in the above technical solution, comprising:

[0050] a) mixing V type oil with Fischer-Tropsch synthetic base oil to obtain base oil;

[0051] b) mixing the base oil with an antioxidant, a corrosion inhibitor, an extreme pressure anti-wear agent and an antifoaming agent to obtain a lubricating oil.

[0052] Among them, the types, dosages and sources of V oils, Fischer-Tropsch synthetic base oils, antioxidants, corrosion inhibitors, extreme pressure wear-resistant agents and antifoaming agents are all consistent with those described in the above technical solutions, and will not be repeated here. Let me repeat them one by one. In the present invention, there is no special limitation on the mixing method in step a) and step b), as long as the materials are uniformly mixed in a conventional mixing operation in the field. In the present invention, in the step a), the mixi...

Embodiment 1

[0055] 1.1 Recipe

[0056] base oil:

[0057] Group V oil - AN5 alkyl naphthalene 10%;

[0058] Fischer-Tropsch synthetic base oil Ⅰ-CTL68 30%;

[0059] Fischer-Tropsch synthetic base oil Ⅱ-CTL32 60%;

[0060] additive:

[0061]

[0062] 1.2 Preparation:

[0063] Mix V type oil and Fischer-Tropsch synthetic base oil uniformly to obtain base oil; then add antioxidant, corrosion inhibitor, extreme pressure anti-wear agent and anti-foaming agent and mix uniformly to obtain lubricating oil.

Embodiment 2

[0065] 1.1 Recipe

[0066] base oil:

[0067] Group V oil - AN5 alkyl naphthalene 5%;

[0068] Fischer-Tropsch synthetic base oil Ⅰ-CTL68 30%;

[0069] Fischer-Tropsch synthetic base oil Ⅱ-CTL32 65%;

[0070] additive:

[0071]

[0072] 1.2 Preparation: Same as Example 1.

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Abstract

The invention provides low-paint-film lubricating oil and a preparation method thereof. The low-paint-film lubricating oil provided by the invention comprises base oil and an additive, wherein the base oil comprises the following components in percentage by weight: 5-10% of V-type oil; 90%-95% of Fischer-Tropsch synthesis base oil; wherein the additive comprises the following components in percentage by weight: 0.5%-2.0% of an antioxidant; 0.01%-0.5% of a corrosion inhibitor; 0.01%-2.0% of an extreme pressure anti-wear agent; and 0%-0.05% of an anti-foaming agent. The V-type oil and the Fischer-Tropsch synthesis base oil are matched according to a certain proportion to serve as the base oil, the specific antioxidant and other additives are added, and the components cooperate with each other, so that the high-temperature oxidation resistance of the lubricating oil can be improved, and generation of oil sludge can be inhibited.

Description

technical field [0001] The invention relates to the field of lubricating oil, in particular to a low paint film lubricating oil and a preparation method thereof. Background technique [0002] In the circulation system, due to long-term operation, a high molecular hydrocarbon polymer is easily produced after the lubricating oil is oxidized. When the polymer cannot be dissolved in the oil, it will deposit on the metal surface and form a paint film. The paint film will bring many hazards, such as reducing the gap, increasing friction, and in severe cases, causing the valve core to fail in bonding operation; clogging the filter and causing poor lubrication of the equipment; Oxidation is accelerated; the paint film will adhere to solid particles, causing abrasive wear on equipment. Not only will it affect production, but it will also cause serious equipment damage and safety production accidents. [0003] Most lubricating oils in the prior art use paraffin oil, PAO, ester oil, ...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/04C10N30/08C10N30/10
CPCC10M169/048C10M2203/065C10M2205/143C10M2207/2855C10M2207/289C10M2215/065C10M2207/127C10M2209/08C10M2229/02
Inventor 熊瑶吴旭东
Owner CHINA PETROLEUM & CHEM CORP