阅读说明：本技术 一种石油装备专用脂及其合成方法 (Special grease for petroleum equipment and synthetic method thereof ) 是由 任晓辰 吴韦岐 于 2019-10-17 设计创作，主要内容包括：本发明公开一种石油装备专用脂及其合成方法,其特征在于,所述石油装备专用脂包括锂基基础油、十二羟基硬脂酸、三级硬脂酸、环烷酸、单水氢氧化锂、抗氧剂、增粘剂、硫化烯烃棉籽油、苯三唑脂肪酸胺盐、氨基硫代酯、硫磷丁辛基锌盐、防锈剂和硼酸盐抗磨极压添加剂,有耐热性好、抗水性、防锈性好,极压性能好,最高使用温度120℃,适用于钻井泵轴承及齿轮的润滑。(The invention discloses a special grease for petroleum equipment and a synthesis method thereof, and is characterized in that the special grease for petroleum equipment comprises lithium-based base oil, dodecahydroxystearic acid, tertiary stearic acid, naphthenic acid, lithium hydroxide monohydrate, an antioxidant, a tackifier, sulfurized olefin cottonseed oil, benzotriazole fatty acid amine salt, aminothio ester, zinc butyl octyl thiophosphate, an antirust agent and a borate antiwear extreme pressure additive, has good heat resistance, water resistance and antirust property and good extreme pressure performance, has the highest service temperature of 120 ℃, and is suitable for lubricating a drilling pump bearing and a gear.)

1. The special grease for petroleum equipment is characterized by mainly comprising lithium-based base oil, dodecahydroxystearic acid, tertiary stearic acid, naphthenic acid, an antioxidant, lithium hydroxide monohydrate, a tackifier, sulfurized olefin cottonseed oil, benzotriazole fatty acid amine salt, aminothioester, butyl octyl zinc dithiophosphate, an antirust agent and a borate antiwear extreme pressure additive,

wherein, calculated by weight portion, 3000 portions of lithium base oil, 230 portions of dodecahydroxystearic acid 220-one, 45-55 portions of tertiary stearic acid, 10-20 portions of naphthenic acid, 40-50 portions of lithium hydroxide monohydrate, 3-5 portions of antioxidant, 30-40 portions of tackifier, 30-40 portions of sulfurized olefin cottonseed oil, 5-15 portions of benzotriazole fatty acid amine salt, 15-20 portions of aminothio ester, 30-40 portions of zinc butyl octyl dithiophosphate, 30-40 portions of antirust agent and 30-40 portions of borate antiwear extreme pressure additive.

2. The special grease for petroleum equipment as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 3000 parts of lithium-based base oil, 225 parts of dodecahydroxy stearic acid, 50 parts of tertiary stearic acid, 15 parts of naphthenic acid, 46 parts of lithium hydroxide monohydrate, 4 parts of antioxidant, 35 parts of tackifier, 35.1 parts of sulfurized olefin cottonseed oil, 10.4 parts of benzotriazole fatty acid amine salt, 17.88 parts of aminothio ester, 35.1 parts of zinc butyl octyl dithiophosphate, 35.1 parts of antirust agent and 35.1 parts of borate antiwear extreme pressure additive.

3. The special grease for petroleum equipment as claimed in claim 2, wherein the antioxidant is L57 antioxidant, the tackifier is HT524 tackifier, the antirust agent is T705 antirust agent, and the borate antiwear extreme pressure additive is T361A borate antiwear extreme pressure additive.

4. The special grease for petroleum equipment as claimed in claim 2, wherein the sulfurized olefin cottonseed oil is 405A sulfurized olefin cottonseed oil, the benzotriazole fatty acid amine salt is 406 benzotriazole fatty acid amine salt, the aminothio ester is T323 aminothio ester, and the zinc butyl octyl dithiophosphate is T202 zinc butyl octyl dithiophosphate.

5. The method for synthesizing the special grease for petroleum equipment, which is characterized by comprising the following steps:

(1) sequentially adding dodecahydroxystearic acid, tertiary stearic acid, naphthenic acid, an L57 antioxidant and lithium hydroxide monohydrate into lithium base oil;

(2) heating the mixed materials to the temperature of the quenching oil after the reaction of temperature rise and pressure rise, keeping the temperature for standby, and starting the heat conduction oil to heat the thickened oil, keeping the temperature for standby;

(3) after the pressure reaches a fixed point, the pressure is released and the temperature is kept after the pressure is controlled for 1 hour at constant pressure;

(4) after heat preservation, oil washing is added after quenching and transferring according to the quenching process requirement, and quenching and transferring are carried out again;

(5) adding thickened oil, homogenizing, and adjusting gauge;

(6) sequentially adding a HT524 tackifier, 405A sulfurized olefin cottonseed oil, 406 benzotriazole fatty acid amine salt, T323 aminothio ester, T202 zinc butyl octyl dithiophosphate, a T705 antirust agent and a T361A borate antiwear extreme pressure additive which are measured in turn respectively;

7) and degassing the mixed material, and packaging and reserving a sample.

6. The method for synthesizing the special grease for petroleum equipment as claimed in claim 5, wherein the specific value of the pressure to the fixed point in the step (3) is 0.51MPa to 0.53MPa, and the temperature is continuously raised to 208 ℃ to 212 ℃ after the pressure relief program is finished, and the temperature is kept for 5 minutes.

7. The method for synthesizing a grease specially for petroleum equipment as claimed in claim 5, wherein the quenching temperature in the quenching process in the step (4) is 183 ℃ to 187 ℃.

Technical Field

The invention relates to the field of lubricating grease, and particularly relates to special grease for petroleum equipment and a synthetic method thereof.

Background

Grease is a thick greasy semisolid. The friction part is used for the machinery and plays a role in lubrication and sealing. Also used on metal surface to fill gap and prevent rust. Is prepared mainly from mineral oil (or synthetic lubricating oil) and thickening agent. For mechanical parts requiring lubrication which are not suitable for using lubricating oil, various greases are produced in order to meet the lubrication requirements of different equipment.

The lubrication of drilling equipment, in order to enable the drilling machine to work normally and continuously, and to enable each part to have a life as long as possible, besides the correct operation and use according to regulations, the drilling machine equipment must be lubricated and maintained. However, the existing lubricating grease on the market or in daily application has general characteristics, the range of the used environment is limited, and the lubricating grease is not suitable for being used by drilling rig equipment under high standards in a multi-scenario environment.

Disclosure of Invention

In order to solve the technical problems, the invention provides the following technical scheme:

the special grease for petroleum equipment mainly comprises lithium base oil, dodecahydroxystearic acid, tertiary stearic acid, naphthenic acid, an antioxidant, lithium hydroxide monohydrate, a tackifier, sulfurized olefin cottonseed oil, benzotriazole fatty acid amine salt, aminothioester, zinc butyl octyl thiophosphate, an antirust agent and a borate antiwear extreme pressure additive,

wherein, calculated by weight portion, 3000 portions of lithium base oil, 230 portions of dodecahydroxystearic acid 220-one, 45-55 portions of tertiary stearic acid, 10-20 portions of naphthenic acid, 40-50 portions of lithium hydroxide monohydrate, 3-5 portions of antioxidant, 30-40 portions of tackifier, 30-40 portions of sulfurized olefin cottonseed oil, 5-15 portions of benzotriazole fatty acid amine salt, 15-20 portions of aminothio ester, 30-40 portions of zinc butyl octyl dithiophosphate, 30-40 portions of antirust agent and 30-40 portions of borate antiwear extreme pressure additive.

In the further scheme, the method comprises the following steps of,

the weight portion of the material is as follows: 3000 parts of lithium-based base oil, 225 parts of dodecahydroxy stearic acid, 50 parts of tertiary stearic acid, 15 parts of naphthenic acid, 46 parts of lithium hydroxide monohydrate, 4 parts of antioxidant, 35 parts of tackifier, 35.1 parts of sulfurized olefin cottonseed oil, 10.4 parts of benzotriazole fatty acid amine salt, 17.88 parts of aminothio ester, 35.1 parts of zinc butyl octyl dithiophosphate, 35.1 parts of antirust agent and 35.1 parts of borate antiwear extreme pressure additive.

In the further scheme, the method comprises the following steps of,

the antioxidant is L57 antioxidant, the tackifier is HT524 tackifier, the antirust agent is T705 antirust agent, and the borate antiwear extreme pressure additive is T361A borate antiwear extreme pressure additive.

In the further scheme, the method comprises the following steps of,

the sulfurized olefin cottonseed oil is 405A sulfurized olefin cottonseed oil, the benzotriazole fatty acid amine salt is 406 benzotriazole fatty acid amine salt, the aminothio ester is T323 aminothio ester, and the zinc butyl octyl dithiophosphate is T202 zinc butyl octyl dithiophosphate.

In the further scheme, the method comprises the following steps of,

the synthesis steps are as follows:

(1) sequentially adding dodecahydroxystearic acid, tertiary stearic acid, naphthenic acid, an L57 antioxidant and lithium hydroxide monohydrate into lithium base oil;

(2) heating the mixed materials to the temperature of the quenching oil after the reaction of temperature rise and pressure rise, keeping the temperature for standby, and starting the heat conduction oil to heat the thickened oil, keeping the temperature for standby;

(3) after the pressure reaches a fixed point, the pressure is released and the temperature is kept after the pressure is controlled for 1 hour at constant pressure;

(4) after heat preservation, oil washing is added after quenching and transferring according to the quenching process requirement, and quenching and transferring are carried out again;

(5) adding thickened oil, homogenizing, and adjusting gauge;

(6) sequentially adding a HT524 tackifier, 405A sulfurized olefin cottonseed oil, 406 benzotriazole fatty acid amine salt, T323 aminothio ester, T202 zinc butyl octyl dithiophosphate, a T705 antirust agent and a T361A borate antiwear extreme pressure additive which are measured in turn respectively;

(7) and degassing the mixed material, and packaging and reserving a sample.

In the further scheme, the method comprises the following steps of,

the specific value from the pressure to the fixed point in the step (3) is 0.51MPa to 0.53MPa, and after the pressure relief program is finished, the temperature is continuously raised to 208 ℃ to 212 ℃, and the temperature is kept for 5 minutes.

In the further scheme, the method comprises the following steps of,

the quenching temperature in the quenching process in the step (4) is 183-187 ℃.

Has the advantages that:

the special grease for petroleum equipment obtained according to the technical scheme has the advantages of good heat resistance, good water resistance, good rust resistance, good extreme pressure performance and 120 ℃ maximum service temperature, and is suitable for lubricating a drilling pump bearing and a gear.

Detailed Description

All equipment used in the present invention is equipment used in the prior art of manufacturing technology