Special oil for hydrogen engine and its preparation process

Abstract

The present invention provides a kind of hydrogen engine special oil and preparation process thereof, relate to the technical field of lubricating oil. The present invention provides a kind of hydrogen engine special oil, by mass percentage, including 50-60% first hydrorefined base oil, 5-15% second hydrorefined base oil, 10-20% composite additive, 0.1-0.5% pour point depressant, 0.1-0.5% thickener, 0.1-0.4955% first antioxidant, 0.1-0.5% second antioxidant and 0.0045-0.0055% antifoaming agent. The present invention achieves a balance between the high temperature performance and low temperature performance of the oil product by using two base oils; by adding an emulsifier, the oil product will not produce stratification during use; by using composite additives, the clean dispersibility, base value retention and acid comprehensive ability of the oil product are improved; the present invention improves the antioxidant performance of the oil product by adopting a combination of multiple additives.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating oils, and more particularly to a special oil for hydrogen engines and a preparation process thereof. Background Art

[0002] The hydrogen engine is a new type of power system and an important form of hydrogen energy utilization, boasting significant advantages in high efficiency, high reliability, low cost, and low emissions. Overall, compared to traditional fuel engines, hydrogen engines offer zero emissions, high efficiency, and superior safety. Regarding hydrogen energy utilization, hydrogen engines are expected to be mass-produced and used in the automotive industry.

[0003] However, hydrogen engine oil will produce a large amount of water when it burns. When this water is diluted into the engine oil, it will cause the engine oil to emulsify or stratify, resulting in a decrease in the oil's anti-wear performance during use, and prone to sludge oxidation. Especially in winter, if the oil is stratified due to excessive water, the water layer will crystallize, affecting the normal starting and lubrication of the engine.

[0004] Therefore, for hydrogen-fueled engines, it is imperative to develop engine oils that meet their operating requirements. Summary of the Invention

[0005] Technical problem to be solved: In view of the shortcomings of the existing technology, the present invention provides a special oil for hydrogen engines, which has good emulsification retention, strong alkalinity retention and acid comprehensive ability, and the oil is not prone to stratification.

[0006] Technical solution: The present invention provides a special oil for hydrogen engines, which includes, by mass percentage, 50%-60% of a first hydrorefined base oil, 5%-15% of a second hydrorefined base oil, 10%-20% of a composite additive, 0.1%-0.5% of a pour point depressant, 0.1%-0.5% of a thickener, 0.1%-0.4955% of a first antioxidant, 0.1%-0.5% of a second antioxidant and 0.0045%-0.0055% of an anti-foaming agent.

[0007] Furthermore, the hydrorefined base oil is base oil Yubase 6; the Group II base oil is base oil Yubase 4.

[0008] Furthermore, the composite additive is Infineum M7296; the pour point depressant is VISCOPLEX® 1-351; the thickener is SV163; the antioxidant is THANOX L57; and the antioxidant is THANOX L135R.

[0009] Furthermore, the anti-foaming agent is foamban 155.

[0010] The present invention also provides a process for preparing a special oil for a hydrogen engine, comprising the following steps:

[0011] Step 1: Add the base oil to the blending tank, turn on the agitator and heat;

[0012] Step 2: After adding the additives, increase the temperature and stir;

[0013] Step 3: Add antifoaming agent through a disperser and stir.

[0014] Furthermore, the heating temperature in step 1 is 40-50° C., the stirring speed is 250-350 r / min, and the stirring time is 45-70 min.

[0015] Furthermore, in step 2, the temperature is raised to 55-65° C., the stirring speed is 250-350 r / min, and the stirring time is 1-2 h.

[0016] Furthermore, the stirring speed in step 3 is 250-350 r / min, and the stirring time is 10-20 min.

[0017] Beneficial effects: The present invention has the following beneficial effects:

[0018] 1. The present invention achieves a balance between the high-temperature performance and low-temperature performance of engine oil by using base oil Yubase 6 and base oil Yubase 4;

[0019] 2. The present invention combines the working principle of hydrogen engines to improve the emulsification performance, lubricity, and cleanliness and dispersibility of oil products;

[0020] 3. The pour point depressant VISCOPLEX® 1-351 added in the present invention has both a pour point depressing effect and an emulsifying property. Its emulsification retention is good, so that the oil product will not stratify during use;

[0021] 4. The present invention uses the composite additive Infineum M7296 to improve the oil's detergency, dispersibility, base value retention, and acid comprehensive capacity, and reduce the impact of hydrogen combustion by-products on the increase of oil sludge;

[0022] 5. The present invention improves the antioxidant properties of oil products by using a combination of the composite additive Infineum M7296, the additive THANOX L57 and the additive THANOX L135R;

[0023] 6. All other properties of the special oil for hydrogen engines of the present invention meet the requirements of API CK-4 standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a comparison chart of lead corrosion caused by oxidation between the hydrogen engine oil of the present invention and conventional engine oil;

[0025] Figure 2 This is a comparison chart of the base number retention of the hydrogen engine oil of the present invention and traditional engine oil;

[0026] Figure 3 This is a comparison chart of the base number retention of the hydrogen engine special oil of the present invention and the general motor oil on the market;

[0027] Figure 4 This is a comparison chart of the comprehensive acid capacity of the hydrogen engine special oil of the present invention and traditional engine oil;

[0028] Figure 5 This is a schematic diagram of the emulsification retention of traditional engine oil;

[0029] Figure 6 This is a schematic diagram of the emulsification retention of the hydrogen engine oil of the present invention. DETAILED DESCRIPTION

[0030] The special oil for hydrogen engines and its production process of the present invention will be further described below in conjunction with specific embodiments, but the embodiments do not limit the present invention in any form.

[0031] The base oil Ultra S6 and base oil Ultra S4 used in the present invention are both sourced from Ssangyong Petrochemical Co., Ltd. of South Korea;

[0032] The compound additive Infineum M7296 comes from Infineum;

[0033] The additive VISCOPLEX® 1-351 comes from Evonik, Germany;

[0034] The additive VISCOPLEX® 1-248 comes from Evonik, Germany;

[0035] Additive SV163 was sourced from Infineum;

[0036] The additive THANOX L57 comes from Li’anlong New Materials Company;

[0037] The additive THANOX L135R comes from Lianlong New Materials Company;

[0038] The additive foaman 155 comes from Mengqingxin Additive Company;

[0039] Unless otherwise stated, the raw materials and reagents used in the examples of the present invention are conventionally purchased raw materials and reagents.

[0040] Example 1:

[0041] This embodiment provides a traditional engine oil, and its preparation process is as follows:

[0042] Step 1: Prepare 60.6kg of Ultra S6 base oil, 8kg of Ultra S4 base oil, 17kg of Infineum M7296 additive complex, 0.4kg of VISCOPLEX® 1-248 additive, and 14kg of SV163 additive; and then prepare 5g of foaman 155 additive.

[0043] Step 2: Add base oil Yubase 6 and base oil Yubase 4 into the blending tank and turn on the agitator, heat to 45°C, and stir at a speed of 300 r / min for 45 minutes;

[0044] Step 3: Add the composite additive Infineum M7296, the additive VISCOPLEX® 1-248, and the additive SV163 in sequence and heat to 60°C. Stir at this temperature at a constant speed of 300 rpm for 1 hour.

[0045] Step 4: Add the additive foaman 155 through a disperser and stir at a speed of 300 r / min for 10 minutes;

[0046] Step 5: Take samples and test according to the standards.

[0047] Example 2:

[0048] This embodiment provides a special oil for hydrogen engines of the present invention, and its preparation process is as follows:

[0049] Step 1: Prepare 50kg of base oil Yubase 6, 13.3kg of base oil Yubase 4, 20kg of compound additive Infineum M7296, 0.495kg of additive VISCOPLEX® 1-351, 16kg of additive SV163, 0.1kg of additive THANOX L57, and 0.1kg of additive THANOX L135R; and prepare 5g of additive foaman 155.

[0050] Step 2: Add base oil Yubase 6 and base oil Yubase 4 into the blending tank and turn on the agitator, heat to 40°C, and stir at a speed of 350r / min for 60min;

[0051] Step 3: Add the composite additive Infineum M7296, additive VISCOPLEX® 1-351, additive SV163, additive THANOX L57 and additive THANOX L135R in sequence and heat to 55°C, and stir at this temperature at a constant temperature of 350 r / min for 1.5 hours;

[0052] Step 4: Add the additive foaman 155 through a disperser and stir at a speed of 350 r / min for 15 minutes;

[0053] Step 5: Take samples and test according to the standards.

[0054] Example 3:

[0055] This embodiment provides a special oil for hydrogen engines of the present invention, and its preparation process is as follows:

[0056] Step 1: Prepare 58.6 kg of base oil Yubase 6, 10 kg of base oil Yubase 4, 17 kg of compound additive Infineum M7296, 0.2 kg of additive VISCOPLEX® 1-351, 14 kg of additive SV163, 0.1155 kg of additive THANOX L57, and 0.08 kg of additive THANOX L135R; and then prepare 4.5 g of additive foaman 155.

[0057] Step 2: Add base oil Yubase 6 and base oil Yubase 4 into the blending tank and turn on the agitator, heat to 45°C, and stir at a speed of 300 r / min for 50 minutes;

[0058] Step 3: Add the composite additive Infineum M7296, additive VISCOPLEX® 1-351, additive SV163, additive THANOX L57 and additive THANOX L135R in sequence and heat to 60°C. Stir at this temperature at a constant temperature of 300 rpm for 1 hour.

[0059] Step 4: Add the additive foaman 155 through a disperser and stir at a speed of 300 r / min for 10 minutes;

[0060] Step 5: Take samples and test according to the standards.

[0061] Example 4:

[0062] This embodiment provides a special oil for hydrogen engines of the present invention, and its preparation process is as follows:

[0063] Step 1: Prepare 54.6 kg of base oil Yubase 6, 14 kg of base oil Yubase 4, 17 kg of compound additive Infineum M7296, 0.2 kg of additive VISCOPLEX® 1-351, 14 kg of additive SV163, 0.1145 kg of additive THANOX L57, and 0.08 kg of additive THANOX L135R; and then prepare 5.5 g of additive foaman 155.

[0064] Step 2: Add base oil Yubase 6 and base oil Yubase 4 into the blending tank and turn on the agitator, heat to 50°C, and stir at a speed of 250r / min for 70min;

[0065] Step 3: Add the composite additive Infineum M7296, additive VISCOPLEX® 1-351, additive SV163, additive THANOX L57 and additive THANOX L135R in sequence and heat to 65°C, and stir at this temperature at a constant temperature of 250 r / min for 2 hours;

[0066] Step 4: Add the additive foaman 155 through a disperser and stir at a speed of 250 r / min for 20 minutes;

[0067] Step 5: Take samples and test according to the standards.

[0068] The results of the physical and chemical performance sampling tests of Example 1, Example 2, Example 3 and Example 4 are as follows:

[0069] Table 1 Physical and chemical properties test methods and results

[0070]

[0071] The engine bench test results of the hydrogen engine oil obtained in Example 3 of the present invention are as follows:

[0072] Table 2: Engine bench test standards and data results

[0073]

[0074] Note: “Report” and “None” mentioned in the standard requirements in the above table indicate that there are no specific standard requirements for this test.

[0075] As shown in Table 1, the hydrogen engine oil of the present invention has improved emulsification retention performance and viscosity index compared with traditional engine oils, and the high-temperature performance and low-temperature performance of the present invention are relatively balanced;

[0076] The engine bench test results in Table 2 show that the cleanliness, dispersibility, anti-wear, corrosion resistance and oxidation resistance of the hydrogen engine oil of the present invention all meet the standard requirements;

[0077] according to Figures 1 to 4 It can be seen that the hydrogen engine oil of the present invention has improved base value retention and acid comprehensive capacity compared with traditional engine oil and general engine oil on the market.

[0078] according to Figure 5 and Figure 6 It can be seen that the hydrogen engine oil of the present invention has improved emulsification retention performance compared with traditional engine oil.

[0079] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Special oil for hydrogen engines, characterized by: The invention comprises, by mass percentage, 50%-60% of a first hydrorefined base oil, 5%-15% of a second hydrorefined base oil, 10%-20% of a composite additive, 0.1%-0.5% of a pour point depressant, 0.1%-0.5% of a thickener, 0.1%-0.4955% of a first antioxidant, 0.1%-0.5% of a second antioxidant, and 0.0045%-0.0055% of an anti-foaming agent; the first hydrorefined base oil is Yubase 6; the second hydrorefined base oil is Yubase 4; the composite additive is Infineum M7296; the pour point depressant is VISCOPLEX® 1-351; the thickener is SV163; the first antioxidant is THANOX L57; the second antioxidant is THANOX L135R; and the anti-foaming agent is foamban 155.

2. The process for preparing the special oil for hydrogen engines according to claim 1, characterized in that: The steps include: Step 1: Add the first hydrorefined base oil and the second hydrorefined base oil into the blending tank respectively, start the stirrer and heat; Step 2: Add the composite additive, pour point depressant, thickener, first antioxidant and second antioxidant in sequence, then raise the temperature and stir; Step 3: Add antifoaming agent through a disperser and stir.

3. The process for preparing the special oil for hydrogen engines according to claim 2, characterized in that: In step 1, the heating temperature is 40-50° C., the stirring speed is 250-350 r / min, and the stirring time is 45-75 min.

4. The process for preparing the special oil for hydrogen engines according to claim 2, characterized in that: In step 2, the temperature is raised to 55-65° C., the stirring speed is 250-350 r / min, and the stirring time is 1-2 h.

5. The process for preparing the special oil for hydrogen engines according to claim 2, characterized in that: The stirring speed in step 3 is 250-350 r / min, and the stirring time is 10-20 min.

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