Preparation method of anti-low-temperature and high-iodine-value palm oil for lubricant

Abstract

This application relates to the technical field of refined oil fractionation products, and specifically discloses a preparation method of anti-low-temperature high-iodine-value palm oil for lubricants. The preparation method of anti-low-temperature high-iodine-value palm oil for lubricants comprises the following steps: heating crude palm oil to completely dissolve it, and then adding glyceryl stearate and sucrose and mixing to obtain a crude palm oil solution; cooling the crude palm oil solution to 21-23 °C, keeping it at a constant temperature, then cooling it to 11-13 °C, keeping it at a constant temperature, continuing to cool it to 2-4 °C, keeping it at a constant temperature, and continuing to cool it to (-6)-(4) °C, keeping it at a constant temperature to obtain a solid-liquid mixture; separating the solid-liquid mixture to obtain palm liquid oil; adding a crystal inhibitor and an antioxidant to the palm liquid oil and mixing to obtain a finished palm oil product. The finished palm oil product obtained by the preparation method of this application has the advantages of low melting point, good anti-low-temperature property, high iodine value and high yield, is suitable for use in lubricants, and meets the market demand.

Description

Technical Field

[0001] The present application relates to the technical field of oil fractionation products, and more specifically, to a method for preparing low-temperature resistant high-iodine value palm oil for lubricant. Background Art

[0002] Palm oil is the oil extracted from palm pulp, that is, it is produced by squeezing raw materials. Palm oil contains a variety of effective ingredients, such as triglycerides, diglycerides, oleic acid, palmitic acid, stearic acid, linoleic acid, etc., which have been widely recognized and used. Because palm oil has good lubricity, it is often used as a lubricating aid and applied in lubricants. Palm oil in lubricants can effectively improve viscosity and fluidity, reduce equipment surface wear, extend equipment service life, and improve lubrication effect. However, the common 24-degree palm oil and 33-degree palm oil on the market, when used in lubricants, due to the high melting point of palm oil, it is easy to crystallize in a low temperature environment, resulting in turbidity, affecting the use effect. Therefore, how to reduce the melting point of palm oil, thereby improving the low temperature resistance of palm oil, has become one of the technical problems that technicians in this field need to solve. Summary of the invention

[0003] In order to reduce the melting point of finished palm oil products, thereby improving the low-temperature resistance of palm oil, the present application provides a method for preparing low-temperature resistant high-iodine value palm oil for lubricant.

[0004] In the first aspect, the present application provides a method for preparing low temperature resistant high iodine value palm oil for lubricant, using the following technical scheme:

[0005] A method for preparing low temperature resistant high iodine value palm oil for lubricant comprises the following steps:

[0006] S1. Heat the palm crude oil at 60-70° C. under constant stirring to completely dissolve it, then add glyceryl stearate and sucrose to mix and obtain a palm crude oil solution;

[0007] S2. While stirring continuously, cooling the crude palm oil solution to 21-23°C, and keeping the temperature constant for 50-70 min. Cooling it to 11-13°C at a cooling rate of 0.5-1.5°C / min, and keeping the temperature constant for 1-3 h. Cooling it further to 2-4°C, and keeping the temperature constant for 3-5 h. Cooling it further to (-6)-(4)°C, and keeping the temperature constant for 8-10 h to obtain a solid-liquid mixture.

[0008] S3, separating the solid-liquid mixture at a temperature of (-6)-(4)°C, heating it to room temperature, and obtaining palm olein;

[0009] S4, adding a crystal inhibitor and an antioxidant into the palm olein to mix and obtain a palm oil finished product.

[0010] The preparation method of the present application, through the mutual cooperation between steps, enables the iodine value of the palm oil product to be > 75 gI / 100 g, the iodine value increase rate to be > 21%, the melting point to be < -5 °C, and the yield to be > 86%. The palm oil product exhibits the advantages of low melting point, high low-temperature resistance, high iodine value, and high yield, and can be used as a lubrication aid and applied in lubricants to meet market demands.

[0011] The preparation method of the present application first heats to fully dissolve the crude palm oil, and then adds glyceryl stearate and sucrose. Then, four-step cooling is adopted. During the cooling process, crystals gradually appear in the crude palm oil solution, and in the presence of glyceryl stearate and sucrose, the crystal surface area is effectively increased, the formation of a network of crystals is accelerated, the crystallization rate is also accelerated, and the crystallization precipitation is promoted. At the same time, constant temperature treatment is also carried out during the four-step cooling, which can effectively make the crystals grow continuously, increase the crystal particle size, reduce the appearance of fine crystals, improve the impurity removal rate, and increase the iodine value and yield of the palm oil product, and reduce the melting point of the palm oil product, making the palm oil product exhibit better comprehensive performance.

[0012] Optionally, the weight ratio of the crude palm oil, glyceryl stearate, and sucrose is 100:(0.01 - 0.03):(0.01 - 0.03).

[0013] By adopting the above technical solution, the weight ratio of the crude palm oil, glyceryl stearate, and sucrose is optimized, the addition amounts of glyceryl stearate and sucrose are limited, and the use effects of glyceryl stearate and sucrose are ensured.

[0014] Optionally, the iodine value of the crude palm oil is 60 - 70 gI / 100 g.

[0015] By adopting the above technical solution, the iodine value of the crude palm oil is optimized, the stability of the source of the crude palm oil is ensured, and then the stability of the palm oil product is ensured, which helps to improve its application effect in lubricants.

[0016] Optionally, the weight ratio of the palm liquid oil, crystal inhibitor, and antioxidant is 100:(0.02 - 0.03):(0.01 - 0.02).

[0017] By adopting the above technical solution, the weight ratio of the palm liquid oil, crystal inhibitor, and antioxidant is optimized, the addition amounts of the crystal inhibitor and antioxidant are limited, and the stability of the palm oil product is ensured.

[0018] Optionally, the crystal inhibitor is one or more of hydroxystearin, glyceryl monopalmitate, and glyceryl behenate.

[0019] By adopting the above technical solution, the crystallization inhibitor is optimized, which facilitates the selection of the crystallization inhibitor. Moreover, glyceryl hydroxystearate, glyceryl monopalmitate, and glyceryl behenate can all play a role in anti-crystallization, improving the low-temperature resistance of the palm oil product.

[0020] Optionally, the antioxidant is one or more of vitamin E, sodium ascorbate, tert-butylhydroquinone, butylated hydroxyanisole, and dibutylhydroxytoluene.

[0021] By adopting the above technical solution, the antioxidant is optimized, which facilitates the selection of the antioxidant. Moreover, vitamin E, sodium ascorbate, tert-butylhydroquinone, butylated hydroxyanisole, and dibutylhydroxytoluene can all effectively prevent the palm oil product from oxidizing and deteriorating, improve the stability of the palm oil product, and extend its service life.

[0022] Optionally, in step S1, the heating time is 2 - 4 h.

[0023] By adopting the above technical solution, the heating time in step S1 is optimized, enabling the palm crude oil to be fully dissolved, facilitating the mixing of the palm crude oil, glyceryl stearate, and sucrose, and ensuring the uniformity and stability of the palm crude oil solution.

[0024] Optionally, in step S2, the stirring rate is 5 - 10 r / min.

[0025] By adopting the above technical solution, the stirring rate in step S2 is optimized, reducing the impact on the crystallization and crystal cultivation processes due to too fast stirring rate, and also reducing the impact on heat dissipation due to too slow stirring rate. Moreover, at a stirring rate of 5 - 10 r / min, it does not affect the crystallization and crystal cultivation processes, and helps with heat transfer, ensuring the crystal particle size, thereby improving the iodine value and low-temperature resistance of the palm oil product, and making the palm oil product exhibit better performance.

[0026] Optionally, in step S3, the separation method is centrifugal separation.

[0027] By adopting the above technical solution, the solid-liquid mixture contains solid crystals and liquid palm olein, and then centrifugation is used for separation, effectively achieving solid-liquid separation and ensuring the purity and quality of the palm olein.

[0028] Optionally, in step S1, the stirring rate is 15 - 25 r / min.

[0029] By adopting the above technical solution, the stirring rate in step S1 is optimized, facilitating the dissolution of the palm crude oil, also facilitating the mixing of the palm crude oil, glyceryl stearate, and sucrose, and increasing the uniformity of the palm crude oil solution.

[0030] Optionally, in step S2, the palm crude oil solution is cooled to 21-23°C at a cooling rate of 3-5°C / min.

[0031] By adopting the above technical solution, the cooling rate of cooling to 21-23°C is optimized, which reduces the influence on crystallization due to too fast cooling rate and also reduces the time cost due to too slow cooling rate. Moreover, within the range of 3-5°C / min, on the basis of ensuring the quality of the palm oil finished product, the time is reduced and the preparation efficiency is accelerated.

[0032] Optionally, in step S4, the stirring rate is 15-25 r / min.

[0033] By adopting the above technical solution, the stirring rate in step S4 is optimized, which helps the mixing of palm liquid oil, crystal inhibitor, and antioxidant and ensures the uniformity of the palm oil finished product.

[0034] In a second aspect, the present application provides a palm oil finished product, adopting the following technical solution:

[0035] A palm oil finished product is prepared by using the preparation method of an anti-low-temperature high-iodine-value palm oil for lubricants described above.

[0036] A lubricant, the raw material of which includes a palm oil finished product prepared by using the preparation method of an anti-low-temperature high-iodine-value palm oil for lubricants described above.

[0037] In summary, the present application has at least the following beneficial effects:

[0038] The preparation method of the anti-low-temperature high-iodine-value palm oil for lubricants of the present application first heats to fully dissolve the palm crude oil, and then adopts four-step cooling. During the cooling process, crystals gradually appear in the palm crude oil solution. And in the presence of glyceryl stearate and sucrose, the crystal surface is increased, the crystallization is accelerated to form a network, the crystallization precipitation is promoted, the crystals grow continuously, the crystal particle size is increased, the appearance of fine crystals is reduced, the impurity removal rate is improved, and the iodine value and yield of the palm oil finished product are increased. Moreover, the melting point of the palm oil finished product is reduced, so that the iodine value of the palm oil finished product > 75 gI / 100g, the iodine value increase rate > 21%, the melting point < -5°C, and the yield > 86%. It shows the advantages of low melting point, good anti-low-temperature property, high iodine value, and high yield, is suitable for use in lubricants, and meets the market demand. Specific Embodiments

[0039] To make the present application easier to understand, the following will further elaborate on the present application in conjunction with embodiments. These embodiments are only illustrative and are not limited to the application scope of the present application. The raw materials or components used in the present application can be obtained through commercial channels or conventional methods without special instructions.

[0040] Embodiment

[0041] Example 1

[0042] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, comprising the following steps:

[0043] S1. At a stirring rate of 20 r / min and a temperature of 65 °C, heat the crude palm oil for 3 h until the crude palm oil is completely dissolved. Then add glyceryl stearate and sucrose, and stir for 3 min to obtain a crude palm oil solution.

[0044] Among them, the weight ratio of crude palm oil, glyceryl stearate, and sucrose is 100:0.02:0.02; the iodine value of the crude palm oil is 62.2 gI / 100 g.

[0045] S2. At a stirring rate of 8 r / min, cool the crude palm oil solution obtained in step S1 to 22 °C at a cooling rate of 4 °C / min, and keep it at a constant temperature for 60 min. Then, at a cooling rate of 1 °C / min, cool it to 12 °C, keep it at a constant temperature for 2 h, continue to cool it to 3 °C, keep it at a constant temperature for 4 h, and continue to cool it to -5 °C, keep it at a constant temperature for 8 h to obtain a solid-liquid mixture.

[0046] S3. Use a centrifuge to centrifuge the solid-liquid mixture obtained in step S2 at a temperature of -5 °C, and then heat it to 23 °C to obtain palm liquid oil.

[0047] S4. At a stirring rate of 20 r / min and a temperature of 23 °C, add a crystal inhibitor and an antioxidant to the palm liquid oil, and stir for 3 min to obtain the finished palm oil.

[0048] Among them, the weight ratio of palm liquid oil, crystal inhibitor, and antioxidant is 100:0.025:0.015; the crystal inhibitor is hydroxystearin and is selected from Henan Ruiren Bio-Engineering Co., Ltd.; the antioxidant is vitamin E.

[0049] Example 2

[0050] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, comprising the following steps:

[0051] S1. At a stirring rate of 15 r / min and a temperature of 70 °C, heat the crude palm oil for 2 h until the crude palm oil is completely dissolved. Then add glyceryl stearate and sucrose, and stir for 3 min to obtain a crude palm oil solution.

[0052] Among them, the weight ratio of crude palm oil, glyceryl stearate, and sucrose is 100:0.02:0.02; the iodine value of the crude palm oil is 62.2 gI / 100 g.

[0053] S2. At a stirring rate of 10 r / min, cool the palm crude oil solution obtained in step S1 to 23 °C at a cooling rate of 5 °C / min, and perform a constant temperature treatment for 70 min. Then, cool it to 13 °C at a cooling rate of 1.5 °C / min, perform a constant temperature treatment for 3 h, continue to cool it to 4 °C, perform a constant temperature treatment for 5 h, and continue to cool it to -4 °C, perform a constant temperature treatment for 10 h to obtain a solid-liquid mixture.

[0054] S3. Use a centrifuge to centrifugally separate the solid-liquid mixture obtained in step S2 at a temperature of -4 °C, and heat it to 23 °C to obtain palm olein.

[0055] S4. At a stirring rate of 15 r / min and a temperature of 23 °C, add a crystal inhibitor and an antioxidant to the palm olein, and stir for 3 min to obtain the finished palm oil.

[0056] Among them, the weight ratio of palm olein, crystal inhibitor, and antioxidant is 100:0.02:0.02; the crystal inhibitor is hydroxystearin and is selected from Henan Ruiren Bioengineering Co., Ltd.; the antioxidant is vitamin E.

[0057] Example 3

[0058] A preparation method of anti-low-temperature and high-iodine value palm oil for lubricants includes the following steps:

[0059] S1. At a stirring rate of 25 r / min and a temperature of 60 °C, heat-treat the palm crude oil for 4 h until the palm crude oil is completely dissolved. Then add glyceryl stearate and sucrose, and stir for 3 min to obtain a palm crude oil solution.

[0060] Among them, the weight ratio of palm crude oil, glyceryl stearate, and sucrose is 100:0.02:0.02; the iodine value of the palm crude oil is 62.2 gI / 100 g.

[0061] S2. At a stirring rate of 5 r / min, cool the palm crude oil solution obtained in step S1 to 21 °C at a cooling rate of 3 °C / min, and perform a constant temperature treatment for 50 min. Then, cool it to 11 °C at a cooling rate of 0.5 °C / min, perform a constant temperature treatment for 1 h, continue to cool it to 2 °C, perform a constant temperature treatment for 3 h, and continue to cool it to -6 °C, perform a constant temperature treatment for 8 h to obtain a solid-liquid mixture.

[0062] S3. Use a centrifuge to centrifugally separate the solid-liquid mixture obtained in step S2 at a temperature of -6 °C, and heat it to 23 °C to obtain palm olein.

[0063] S4. At a stirring rate of 25 r / min and a temperature of 23 °C, add a crystal inhibitor and an antioxidant to the palm olein, and stir for 3 min to obtain the finished palm oil.

[0064] Among them, the weight ratio of palm olein, crystal inhibitor, and antioxidant is 100:0.03:0.01; the crystal inhibitor is hydroxystearin and is selected from Henan Ruiren Bioengineering Co., Ltd.; the antioxidant is vitamin E.

[0065] Example 4

[0066] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that in step S1, the weight ratio of crude palm oil, glyceryl stearate, and sucrose is different, and the weight ratio of crude palm oil, glyceryl stearate, and sucrose is 100:0.01:0.03.

[0067] Example 5

[0068] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that in step S1, the weight ratio of crude palm oil, glyceryl stearate, and sucrose is different, and the weight ratio of crude palm oil, glyceryl stearate, and sucrose is 100:0.03:0.01.

[0069] Comparative Example

[0070] Comparative Example 1

[0071] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that in step S1, an equal amount of crude palm oil is used to replace glyceryl stearate and sucrose.

[0072] Comparative Example 2

[0073] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that in step S1, an equal amount of glyceryl stearate is used to replace sucrose.

[0074] Comparative Example 3

[0075] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that in step S1, an equal amount of sucrose is used to replace glyceryl stearate.

[0076] Comparative Example 4

[0077] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that in step S1, an equal amount of glucose is used to replace sucrose.

[0078] Comparative Example 5

[0079] A preparation method of low-temperature-resistant and high-iodine-value palm oil for lubricants, the difference from Example 1 is that step S2 is different.

[0080] Step S2 specifically is: At a stirring rate of 8 r / min, at a cooling rate of 4 °C / min, cool the palm crude oil solution obtained in Step S1 to -5 °C, perform a constant temperature treatment for 15 h to obtain a solid-liquid mixture.

[0081] Comparative Example 6

[0082] A preparation method of low-temperature-resistant high-iodine-value palm oil for lubricants, the difference from Example 1 lies in that Step S2 is different.

[0083] Step S2 specifically is: At a stirring rate of 8 r / min, at a cooling rate of 1 °C / min, cool the palm crude oil solution obtained in Step S1 to -5 °C, perform a constant temperature treatment for 15 h to obtain a solid-liquid mixture.

[0084] Comparative Example 7

[0085] A preparation method of low-temperature-resistant high-iodine-value palm oil for lubricants, the difference from Example 1 lies in that Step S2 is different.

[0086] Step S2 specifically is: At a stirring rate of 8 r / min, at a cooling rate of 4 °C / min, cool the palm crude oil solution obtained in Step S1 to 22 °C, perform a constant temperature treatment for 60 min. Then at a cooling rate of 1 °C / min, cool to 3 °C, perform a constant temperature treatment for 6 h, continue to cool to -5 °C, perform a constant temperature treatment for 8 h to obtain a solid-liquid mixture.

[0087] Comparative Example 8

[0088] A preparation method of low-temperature-resistant high-iodine-value palm oil for lubricants, the difference from Example 1 lies in that Step S2 is different.

[0089] Step S2 specifically is: At a stirring rate of 8 r / min, at a cooling rate of 4 °C / min, cool the palm crude oil solution obtained in Step S1 to 22 °C, perform a constant temperature treatment for 60 min. Then at a cooling rate of 1 °C / min, cool to 12 °C, perform a constant temperature treatment for 6 h, continue to cool to -5 °C, perform a constant temperature treatment for 8 h to obtain a solid-liquid mixture.

[0090] Performance detection

[0091] Respectively take the palm oil finished products obtained in Examples 1-5 and Comparative Examples 1-8, and according to GB / T15680-2009, detect the iodine value of the palm oil finished products, and use a thermal flow differential scanning calorimeter to detect the melting point of the palm oil finished products. At the same time, also detect the yield of the palm oil finished products, and the detection results are shown in Table 1.

[0092] Among them, iodine value increase rate / (%) = (iodine value of palm oil finished product - iodine value of palm crude oil) / iodine value of palm crude oil × 100%.

[0093] Table 1 Test Results

[0094]

[0095] As can be seen from Table 1, the palm oil product obtained by the preparation method of this application has a relatively high iodine value and iodine value increase rate. The iodine value is 75.4 - 76.8 gI / 100g, and the iodine value increase rate is 21.2 - 23.5%, showing the characteristic of high iodine value. Moreover, it also has a relatively low melting point, with a melting point of (-5.86) - (-5.45) °C, showing the characteristic of good low-temperature resistance. At the same time, it also has a relatively high yield, with a yield of 86.1 - 88.6%, showing the characteristic of high yield. In the preparation method of this application, through the mutual cooperation between each step, the palm oil product has the advantages of good low-temperature resistance, high iodine value, and high yield, meeting the market demand.

[0096] Compare Example 1 with Comparative Examples 1 - 3. In step S1 of the preparation method of Comparative Example 1, glyceryl stearate and sucrose were not added; in step S1 of the preparation method of Comparative Example 2, glyceryl stearate was added; in step S1 of the preparation method of Comparative Example 3, sucrose was added; in step S1 of the preparation method of Example 1, glyceryl stearate and sucrose were added. It can be seen from this that adding glyceryl stearate and sucrose to crude palm oil and utilizing their synergistic effect can significantly improve the iodine value and low-temperature resistance of the palm oil product. Combining with Comparative Example 4, in step S1 of the preparation method of Comparative Example 4, glyceryl stearate and glucose were added. It can be seen from this that compared with adding glucose to crude palm oil, adding sucrose to crude palm oil can significantly enhance the interaction between it and glyceryl stearate and make the palm oil product show better comprehensive performance.

[0097] Compare Comparative Examples 5 - 6. In step S2 of the preparation method of Comparative Example 5, the temperature was directly reduced to -5 °C in one step, and the cooling rate was 4 °C / min; in step S2 of the preparation method of Comparative Example 6, the temperature was directly reduced to -5 °C in one step, and the cooling rate was 1 °C / min. It can be seen from this that reducing the cooling rate is beneficial to crystal precipitation and improves the performance of the palm oil product.

[0098] Examples 1 and Comparative Examples 7-8 were compared. In step S2 of the preparation method of Comparative Example 7, three-step cooling was adopted. First, the temperature was lowered to 22 °C, then to 3 °C, and then to -5 °C. In step S2 of the preparation method of Comparative Example 8, three-step cooling was adopted. First, the temperature was lowered to 22 °C, then to 14 °C, and then to -5 °C. In step S2 of the preparation method of Example 1, four-step cooling was adopted. First, the temperature was lowered to 22 °C, then to 14 °C, then to 3 °C, and then to -5 °C. It can be seen from this that the four-step cooling method is superior to the three-step cooling method. Moreover, by adopting the four-step cooling method, the crystallization precipitation can be effectively promoted, the crystallization efficiency can be improved, the crystal particle size can be increased, the melting point of the palm oil product can be reduced, and the iodine value and yield of the palm oil product can be increased.

[0099] It should be noted that the above-described examples are only used to explain the present application and do not constitute any limitation to the present application. The present application has been described by referring to typical examples, but it should be understood that the words used therein are descriptive and explanatory words rather than limiting words. Modifications can be made to the present application within the scope of the claims of the present application as stipulated, and the present invention can be revised without departing from the scope and spirit of the present application. Although the present application described therein relates to specific methods, materials and examples, it does not mean that the present application is limited to the specific examples disclosed therein. On the contrary, the present application can be extended to all other methods and applications with the same functions.

Claims

1. A preparation method of anti-low-temperature and high-iodine-value palm oil for lubricants, characterized in that: It includes the following steps: S1. Heat palm crude oil at a temperature of 60 - 70 °C with continuous stirring until it is completely dissolved, then add glyceryl stearate and sucrose and mix to obtain a palm crude oil solution; S2. Under continuous stirring, cool the palm crude oil solution to 21 - 23 °C, keep it at a constant temperature for 50 - 70 min, then cool it at a rate of 0.5 - 1.5 °C / min to 11 - 13 °C, keep it at a constant temperature for 1 - 3 h, continue to cool it to 2 - 4 °C, keep it at a constant temperature for 3 - 5 h, and continue to cool it to (-6) - 4 °C, keep it at a constant temperature for 8 - 10 h to obtain a solid-liquid mixture; S3. Separate the solid-liquid mixture at a temperature of (-6) - 4 °C and then heat it to room temperature to obtain palm olein; S4. Add a crystallization inhibitor and an antioxidant to the palm olein and mix to obtain the finished palm oil.

2. The preparation method of a low-temperature-resistant palm oil with a high iodine value for lubricants according to claim 1, characterized in that: The weight ratio of the palm crude oil, glyceryl stearate, and sucrose is 100:(0.01 - 0.03):(0.01 - 0.03).

3. The preparation method of a low-temperature resistant and high iodine value palm oil for lubricants according to claim 1, wherein: The iodine value of the palm crude oil is 60 - 70 gI / 100 g.

4. The preparation method of a low-temperature resistant and high iodine value palm oil for lubricants according to claim 1, characterized in that: The weight ratio of the palm olein, crystallization inhibitor, and antioxidant is 100:(0.02 - 0.03):(0.01 - 0.02).

5. The preparation method of a low-temperature-resistant palm oil with high iodine value for lubricants according to claim 1, characterized in that: The crystallization inhibitor is one or more of hydroxystearin, glycerol monopalmitate, and glyceryl behenate.

6. The preparation method of a low-temperature resistant and high iodine value palm oil for lubricants according to claim 1, characterized in that: The antioxidant is one or more of vitamin E, sodium ascorbate, tert-butylhydroquinone, butylated hydroxyanisole, and dibutylhydroxytoluene.

7. The preparation method of a low-temperature resistant and high-iodine value palm oil for lubricants according to claim 1, characterized in that: In step S1, the heating time is 2 - 4 h.

8. The preparation method of a low-temperature resistant and high iodine value palm oil for lubricants according to claim 1, characterized in that: In step S2, the stirring rate is 5 - 10 r / min.

9. The preparation method of a low-temperature resistant and high iodine value palm oil for lubricants according to claim 1, characterized in that: In step S3, the separation method is centrifugal separation.

10. A finished palm oil product, characterized in that: It is prepared by using the preparation method of a low-temperature-resistant high-iodine-value palm oil for lubricants described in any one of claims 1 - 9.

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