阅读说明：本技术 一种冷功制冷机油添加剂 (Cold work refrigerating machine oil additive ) 是由 仝宝雄 于 2020-05-29 设计创作，主要内容包括：本发明适用于制冷机油技术领域,提供了一种冷功制冷机油添加剂,包括如下重量份数的原料：芳烃稀释剂23～40份,抗氧剂10～15份,极压抗磨剂5～8份,金属减活剂1～3份,消泡剂0.12～0.16份；芳烃稀释剂为重烷基苯,抗氧剂为辛基/丁基二苯胺,极压抗磨剂为硫代磷酸三苯酯,金属减活剂为苯并三唑,消泡剂为聚烷撑二醇。借此,本发明制备方法简单,配比合理,加入到冷冻机油后,使冷冻机油可以同时兼顾制冷剂相容性、润滑性和低温流动性。(The invention is suitable for the technical field of refrigerating machine oil, and provides a cold power refrigerating machine oil additive which comprises the following raw materials in parts by weight: 23-40 parts of aromatic hydrocarbon diluent, 10-15 parts of antioxidant, 5-8 parts of extreme pressure antiwear agent, 1-3 parts of metal deactivator and 0.12-0.16 part of defoaming agent; the aromatic hydrocarbon diluent is heavy alkylbenzene, the antioxidant is octyl/butyl diphenylamine, the extreme pressure antiwear agent is triphenyl thiophosphate, the metal deactivator is benzotriazole, and the defoaming agent is polyalkylene glycol. Therefore, the preparation method is simple, the proportion is reasonable, and after the refrigerant oil is added, the refrigerant oil can simultaneously give consideration to the compatibility, the lubricity and the low-temperature fluidity of the refrigerant.)

1. The cold work refrigerating machine oil additive is characterized by comprising the following raw materials in parts by weight: 23-40 parts of aromatic hydrocarbon diluent, 10-15 parts of antioxidant, 5-8 parts of extreme pressure antiwear agent, 1-3 parts of metal deactivator and 0.12-0.16 part of defoaming agent;

the aromatic hydrocarbon diluent is heavy alkylbenzene, the antioxidant is octyl/butyl diphenylamine, the extreme pressure antiwear agent is triphenyl thiophosphate, the metal deactivator is benzotriazole, and the defoaming agent is polyalkylene glycol.

2. The cold work refrigerator oil additive according to claim 1, wherein the aromatic hydrocarbon diluent has a kinematic viscosity of 53-86 mm2/s at 40 ℃ and a% CA of 10-50%.

3. The cold working refrigerator oil additive according to claim 1, wherein the additive is added to the refrigerator oil in a proportion of 10% to 48%.

4. The cold working refrigerator oil additive according to claim 3, wherein the additive is added to a refrigerator oil having a pour point of-20 ℃.

5. The cold power refrigerator oil additive as claimed in claim 3, wherein the additive is added to refrigerator oil, and the kinematic viscosity of the refrigerator oil at 40 ℃ is 53-86 mm²/s。

6. The cold work refrigerating machine oil additive according to claim 1, wherein the raw materials of the cold work refrigerating machine oil additive comprise, by weight: 34 parts of aromatic hydrocarbon diluent, 11 parts of antioxidant, 6.8 parts of extreme pressure antiwear agent, 2 parts of metal deactivator and 0.13 part of defoaming agent.

7. The invention also provides a preparation method of the additive, which comprises the following steps:

step one, adding an antioxidant into an aromatic hydrocarbon diluent at the temperature of 50-60 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product I;

step two, adding an extreme pressure antiwear agent into the intermediate product I at the temperature of 50-70 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product II;

adding a metal deactivator into the intermediate product II at the temperature of 50-70 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product III;

and step four, adding a defoaming agent into the intermediate product III at the temperature of 40-60 ℃, and stirring for 40-45 min until the mixture is uniform, thereby obtaining the refrigerating machine oil additive.

Technical Field

The invention relates to the technical field of refrigerating machine oil, in particular to a cold power refrigerating machine oil additive.

Background

The compression type refrigerating system has the working principle that when a refrigerant is gasified and volatilized, the heat of surrounding media is absorbed, the temperature is reduced to cool, then the refrigerant is compressed by a compressor, a condenser dissipates heat and liquefies, the refrigerant is gasified again, and the process is repeated in a circulating mode. The compressor is the key of the refrigeration system, the refrigerating machine oil plays roles of lubrication, heat dissipation, sealing, corrosion prevention and the like in the compressor, and the refrigeration system has obvious influence on the efficiency of the refrigeration system and the service life of the compressor, so that the selection of the refrigerating machine oil with excellent performance is very important for the compression refrigeration system. The large screw type refrigerating compressor unit using ammonia as a refrigerant has large refrigerating load and high refrigerating efficiency, so that the large screw type refrigerating compressor unit has higher requirements on the cooling, lubricating, sealing, corrosion resistance and other properties of matched refrigerator oil products, oxidation stability and service life. In order to meet the severe working conditions of the screw type ammonia refrigeration compressor, different functional additives are added to be an important way for improving the service performance of the refrigerating machine oil product.

The high-pressure hydrogenation process is a mainstream process for producing high-quality mineral lubricating oil, the process is environment-friendly, clean and efficient, the obtained lubricating oil base oil is almost free of aromatic compounds, and the deeply refined base oil is adopted as the raw oil of a refrigerator oil product, so that the oxidation stability and the light stability of the deeply refined base oil have certain defects in use. The refrigerator oil has various related raw material types, so that the process is complicated in production, and the operation efficiency is reduced and the energy consumption is increased.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

Disclosure of Invention

Aiming at the defects, the invention aims to provide the cold power refrigerating machine oil additive which is simple in preparation method and reasonable in proportion, and after the cold power refrigerating machine oil additive is added into the refrigerating machine oil, the refrigerating machine oil can simultaneously give consideration to the compatibility, the lubricity and the low-temperature fluidity of a refrigerant.

In order to achieve the purpose, the invention provides a cold power refrigerating machine oil additive which comprises the following raw materials in parts by weight: 23-40 parts of aromatic hydrocarbon diluent, 10-15 parts of antioxidant, 5-8 parts of extreme pressure antiwear agent, 1-3 parts of metal deactivator and 0.12-0.16 part of defoaming agent; the aromatic hydrocarbon diluent is heavy alkylbenzene, the antioxidant is octyl/butyl diphenylamine, the extreme pressure antiwear agent is triphenyl thiophosphate, the metal deactivator is benzotriazole, and the defoaming agent is polyalkylene glycol.

According to the cold work refrigerating machine oil additive, the kinematic viscosity of the aromatic hydrocarbon diluent at 40 ℃ is 53-86 mm2/s, and the% CA is 10-50%.

According to the cold power refrigerating machine oil additive, the adding proportion of the additive in the refrigerating machine oil is 10-48%.

According to the cold power refrigerating machine oil additive, the additive is added into the refrigerating machine oil, and the pour point of the refrigerating machine oil is less than or equal to-20 ℃.

According to the cold power refrigerating machine oil additive, the additive is added into the refrigerating machine oil, and the kinematic viscosity of the refrigerating machine oil at 40 ℃ is 53-86 mm²/s。

According to the refrigeration machine oil additive, the refrigeration machine oil additive comprises the following raw materials in parts by weight: 34 parts of aromatic hydrocarbon diluent, 11 parts of antioxidant, 6.8 parts of extreme pressure antiwear agent, 2 parts of metal deactivator and 0.13 part of defoaming agent.

The invention also provides a preparation method of the additive, which comprises the following steps:

step one, adding an antioxidant into an aromatic hydrocarbon diluent at the temperature of 50-60 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product I;

step two, adding an extreme pressure antiwear agent into the intermediate product I at the temperature of 50-70 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product II;

adding a metal deactivator into the intermediate product II at the temperature of 50-70 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product III;

and step four, adding a defoaming agent into the intermediate product III at the temperature of 40-60 ℃, and stirring for 40-45 min until the mixture is uniform, thereby obtaining the refrigerating machine oil additive.

The invention aims to provide a cold-work refrigerating machine oil additive, which is added into refrigerating machine oil after being prepared by reasonably setting the weight ratio of various raw materials in the additive, so that the refrigerating machine oil has more excellent low-temperature fluidity, oxidation stability, extreme pressure wear resistance, metal corrosion resistance and anti-foaming property, can circularly work in an ammonia refrigerating compressor more efficiently, and has long service life. In addition, the additive composition of the invention enables the production operation of the refrigerating machine oil to be simpler and more efficient, and the energy consumption to be lower. In conclusion, the beneficial effects of the invention are as follows: the preparation method is simple, the proportion is reasonable, and after the refrigerant oil is added, the refrigerant oil can simultaneously give consideration to the compatibility, the lubricity and the low-temperature fluidity of the refrigerant.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a cold power refrigerating machine oil additive which comprises the following raw materials in parts by weight: 23-40 parts of aromatic hydrocarbon diluent, 10-15 parts of antioxidant, 5-8 parts of extreme pressure antiwear agent, 1-3 parts of metal deactivator and 0.12-0.16 part of defoaming agent; the aromatic hydrocarbon diluent is heavy alkylbenzene, the antioxidant is octyl/butyl diphenylamine, the extreme pressure antiwear agent is triphenyl thiophosphate, the metal deactivator is benzotriazole, and the defoaming agent is polyalkylene glycol.

According to the invention, the extreme pressure antiwear agent with an accurate amount is added, so that the wear resistance and extreme pressure performance of the refrigerating machine oil and the working fluid composition for the refrigerator are improved; antioxidants are added to improve the thermal stability of the refrigerator oil and working fluid compositions for refrigerators.

The aromatic hydrocarbon diluent has a kinematic viscosity of 53-86 mm at 40 DEG C²And/s,% CA is 10-50%.

Adding the refrigerating machine oil additive into refrigerating machine oil, wherein the pour point of the refrigerating machine oil is less than or equal to-20 ℃, and preferably less than or equal to-30 ℃; the kinematic viscosity at 100 ℃ is 3-12 mm²And s. Under the conditions of the pour point and the kinematic viscosity, the compatibility of the refrigerating machine oil and the refrigerant is better, and the lubricating property and the low-temperature fluidity of the working fluid composition formed by the refrigerating machine oil and the refrigerant are better.

In the invention, the additive composition is added into the refrigerator oil in a proportion of 10-48%.

The inventor proves through a plurality of tests that the refrigerating machine oil additive comprises the following raw materials in parts by weight: when 34 parts of aromatic hydrocarbon diluent, 11 parts of antioxidant, 6.8 parts of extreme pressure antiwear agent, 2 parts of metal deactivator and 0.13 part of defoamer are added into the refrigerator oil, the compatibility of the refrigerator oil and the refrigerant and the lubricating property and low-temperature fluidity of the working fluid composition formed by the refrigerator oil and the refrigerant are the best;

the invention also provides a preparation method of the refrigerator oil additive, which comprises the following steps:

step one, adding an antioxidant into an aromatic hydrocarbon diluent at the temperature of 50-60 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product I;

step two, adding an extreme pressure antiwear agent into the intermediate product I at the temperature of 50-70 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product II;

adding a metal deactivator into the intermediate product II at the temperature of 50-70 ℃, and stirring for 20-25 min until the mixture is uniform to obtain an intermediate product III;

and step four, adding a defoaming agent into the intermediate product III at the temperature of 40-60 ℃, and stirring for 40-45 min until the mixture is uniform, thereby obtaining the refrigerating machine oil additive.

In order to verify the performance of the refrigerating machine oil additive, the additive is prepared according to the method after a plurality of raw material proportioning tests, and the following embodiments are provided.