Hydrocarbon gas compressor lubricating oil composition

Abstract

The application discloses a hydrocarbon gas compressor lubricating oil composition which is composed of the following raw material components in percentage by mass: ionic liquid 0.5-5%, metal passivator 0.2-2%, antirust agent 0.1-1%, antifoam agent 0.005-0.05%, and the balance of base oil. The hydrocarbon gas compressor lubricating oil composition comprises the ionic liquid, the metal passivator, the antirust agent, the antifoam agent and the base oil in specific contents, and the hydrocarbon gas compressor lubricating oil composition has excellent comprehensive performance and wide application prospect.

Description

Technical Field

[0001] This invention belongs to the field of lubricating oil material technology, specifically relating to a lubricating oil composition for hydrocarbon gas compressors. Background Technology

[0002] Hydrocarbon gases refer to low-carbon hydrocarbon substances composed of carbon and hydrogen, such as ethylene, propylene, ethane, propane, and natural gas. The compression of hydrocarbon gases is very common in industrial fields, especially in the petrochemical industry. Hydrocarbon gas compressors can operate at pressures exceeding 300 MPa. Therefore, in addition to requiring lubricating oils that reduce the solubility of hydrocarbon gases in the lubricating oil and have strong resistance to liquid hydrocarbon flushing, the other comprehensive performance requirements for hydrocarbon gas compressor lubricating oils are also quite stringent, especially in terms of corrosion resistance, rust prevention, and anti-foaming properties.

[0003] While current hydrocarbon gas compressor lubricants can improve various properties to some extent, the improvement is still limited, leaving room for further improvement, particularly in corrosion resistance. Therefore, there is an urgent need for a hydrocarbon gas compressor lubricant composition that combines superior corrosion resistance, rust prevention, and anti-foaming properties. Summary of the Invention

[0004] The purpose of this invention is to provide a lubricating oil composition for hydrocarbon gas compressors, which has excellent corrosion resistance, rust prevention and anti-foaming properties.

[0005] The technical solution adopted in this invention is: a hydrocarbon gas compressor lubricating oil composition, which is composed of the following raw material components by mass percentage: 0.5-5% ionic liquid, 0.2-2% metal passivator, 0.1-1% rust inhibitor, 0.005-0.05% antifoaming agent, and the balance being base oil.

[0006] The invention is further characterized by:

[0007] It consists of the following raw material components by weight percentage: 3-5% ionic liquid, 0.6-1.5% metal passivator, 0.3-0.5% rust inhibitor, 0.01-0.02% antifoaming agent, and the balance being base oil.

[0008] The structural formula of the ionic liquid is:

[0009]

[0010] The metal passivating agent is at least one of toluenetriazole, N,N'-dialkylaminomethylenetriazole, and N,N'-disalinetriamine.

[0011] The rust inhibitor is at least one of dodecenyl succinate half ester and dodecenyl succinate mono ester.

[0012] The antifoaming agent is No. 1 composite antifoaming agent.

[0013] The base oil is polyether.

[0014] The beneficial effects of the present invention are: the hydrocarbon gas compressor lubricating oil composition of the present invention includes specific amounts of ionic liquid, metal passivator, rust inhibitor, antifoaming agent and base oil, and the hydrocarbon gas compressor lubricating oil composition has excellent comprehensive performance and broad application prospects. Detailed Implementation

[0015] The present invention will now be described in detail with reference to specific embodiments.

[0016] This invention provides a hydrocarbon gas compressor lubricating oil composition, which is composed of the following raw material components by mass percentage: 0.5-5% ionic liquid, 0.2-2% metal passivator, 0.1-1% rust inhibitor, 0.005-0.05% antifoaming agent, and the balance being base oil.

[0017] The hydrocarbon gas compressor lubricating oil composition comprises the following raw material components by mass percentage: 3-5% ionic liquid, 0.6-1.5% metal passivator, 0.3-0.5% rust inhibitor, 0.01-0.02% antifoaming agent, and the balance being base oil.

[0018] The structural formula of the ionic liquid is:

[0019]

[0020] The metal passivating agent is at least one of toluenetriazole, N,N'-dialkylaminomethylenetriazole, and N,N'-disalinetriamine.

[0021] The rust inhibitor is at least one of dodecenyl succinate half ester and dodecenyl succinate mono ester.

[0022] The antifoaming agent is No. 1 composite antifoaming agent.

[0023] The base oil is polyether.

[0024] Example 1

[0025] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0026] name mass percentage content / % Ionic liquids 1 Toluene-triazole 1.8 Dodecenyl succinate half-ester 0.2 #1 Compound Antifoaming Agent 0.008 polyether 96.992

[0027] Example 2

[0028] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0029]

[0030]

[0031] Example 3

[0032] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0033] name mass percentage content / % Ionic liquids 0.5 Toluene-triazole 2 Dodecenyl succinate monoester 0.1 #1 Compound Antifoaming Agent 0.05 polyether 97.35

[0034] Example 4

[0035] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0036] name mass percentage content / % Ionic liquids 5 N,N'-Disalminepropanediamine 0.2 Dodecenyl succinate half-ester 1 #1 Compound Antifoaming Agent 0.005 polyether 93.795

[0037] Comparative Example 1

[0038] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0039] name mass percentage content / % Toluene-triazole 1.8 Dodecenyl succinate half-ester 0.2 #1 Compound Antifoaming Agent 0.008 polyether 97.992

[0040] Comparative Example 2

[0041] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0042] name mass percentage content / % Ionic liquids 3 N,N'-Dialkylaminomethylenetriazole 1 Dodecenyl succinate monoester 0.3 #1 Compound Antifoaming Agent 0.01 polyether 95.69

[0043] The structural formula of ionic liquids is:

[0044]

[0045] Comparative Example 3

[0046] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0047] name mass percentage content / % Ionic liquids 0.3 Toluene-triazole 2.2 Dodecenyl succinate monoester 0.06 #1 Compound Antifoaming Agent 0.06 polyether 97.38

[0048] Comparative Example 4

[0049] The material components of the hydrocarbon gas compressor lubricating oil composition are as follows:

[0050]

[0051]

[0052] Performance Characterization

[0053] 1. Performance tests were conducted on the base oil polyether, and the test results are shown in Table 1.

[0054] Table 1

[0055] project polyether Test methods <![CDATA[Kinematic viscosity (40 °C) / (mm 2 / s)]]> 221.7 GB / T265 Viscosity Index 212 GB / T2541 Pour point / ℃ -30 GB / T3535 Flash point (open cup) / °C 286 GB / T3536

[0056] 2. The performance of the hydrocarbon gas compressor lubricating oil compositions in the examples and comparative examples was tested, and the test results are shown in Table 2.

[0057] Table 2

[0058]

[0059] As can be seen from Table 2, the hydrocarbon gas compressor lubricating oil composition prepared in the embodiments of the present invention has excellent corrosion resistance, rust prevention and anti-foaming properties, especially excellent corrosion resistance.

Claims

1. A lubricating oil composition for a hydrocarbon gas compressor, characterized in that, It is composed of the following raw material components by mass percentage: 3-5% ionic liquid, 0.6-1.5% metal passivator, 0.3-0.5% rust inhibitor, 0.01-0.02% antifoaming agent, and the balance being base oil; The structural formula of the ionic liquid is: ； The base oil is a polyether.

2. The hydrocarbon gas compressor lubricating oil composition as described in claim 1, characterized in that, The metal passivating agent is at least one of toluenetriazole, N,N'-dialkylaminomethylenetriazole, and N,N'-disalinetriamine.

3. The hydrocarbon gas compressor lubricating oil composition as described in claim 1, characterized in that, The rust inhibitor is dodecenyl succinate half ester.

4. The hydrocarbon gas compressor lubricating oil composition as described in claim 1, characterized in that, The antifoaming agent is No. 1 composite antifoaming agent.

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