Automotive liquid wax RE fuel and preparation method thereof

Abstract

The invention relates to an automotive liquid wax RE fuel and a preparation method thereof. The automotive liquid wax RE fuel comprises the following components in percentage by weight: 30-40% of liquid wax oil; 20%-30% of C12; 5%-10% of palm oil; 5%-10% of methanol; 5%-10% of ethanol; 2.5%-5% of isopropanol and 0.2%-0.5% of a pour point depressant; 0.01%-0.2% of an antioxidant; 1%-5% of methyl tertiary butyl ether; 0.05%-0.2% of a dispersion cleaning agent; 1%-3% of a cetane number improver; 0.5%-1% of a surfactant; and 0.01%-0.05% of a carbon deposition cleaning agent. The prepared liquid wax RE fuel for the vehicle is low in condensation point, not prone to solidification at the low temperature, higher than the national standard in flash point, free of fire disasters and poisoning risks, free of hazardous chemicals, convenient to store and transport, capable of being stored and transported through common iron, stainless steel and plastic containers, free of burning and explosion risks, resistant to burning compared with existing diesel oil of various purposes on the market, and lower in comprehensive use cost.

Description

Technical Field

[0001] The invention relates to a vehicle liquid wax RE fuel and a preparation method thereof, belonging to the technical field of biofuels. Background Art

[0002] Vegetable oil and alcohol fuels have become one of the ideal alternative fuels for diesel engines recognized by the academic community due to their wide sources, reproducibility and environmental friendliness. Among them, palm oil and ethanol are the most prominent, which can effectively alleviate my country's dependence on petroleum resources, and can also reduce diesel engine exhaust emissions, which is of great significance to protecting the ecological environment. The high kinematic viscosity of vegetable oil has always been an important factor hindering its application in diesel engines. High kinematic viscosity will lead to many problems such as poor atomization quality of diesel engines, decreased uniformity of mixed gas, deterioration of combustion process, and increased exhaust emissions. Therefore, improving the physical and chemical properties of vegetable oil by blending other fuels so that it can be applied to diesel engines has become an important research direction in recent years. Many experts at home and abroad have studied the application of vegetable oil mixed fuels in diesel engines. The existing vegetable oil blending preparation fuel is based on gasoline and diesel, and a certain amount of vegetable oil is added to achieve the preparation of direct mixed combustion of vegetable oil. This method is still based on gasoline and diesel, and has little effect on the degree of reduction in dependence on petroleum resources. Liquid wax oil has a high cetane number, which can significantly improve the combustion performance of diesel, improve the engine's starting performance and running stability. Liquid wax oil has good low-temperature fluidity, which can improve the performance of diesel in low-temperature environments. However, liquid wax oil has poor lubricity, which may cause wear of engine parts. At the same time, the energy density of liquid wax oil is lower than that of traditional diesel, and the combustion economy is poor. There are not many blended diesels using liquid wax oil as the basis of diesel. Therefore, it is of great significance to develop a blended diesel based on liquid wax oil and palm oil in order to reduce the cost of diesel vehicle fuel and improve the combustibility of diesel. Summary of the invention

[0003] The invention provides a vehicle liquid wax RE fuel and a preparation method thereof, which solves the problems of high cost and poor combustion performance in the existing preparation of diesel by blending vegetable oil with gasoline and diesel as the basis.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A vehicle liquid wax RE fuel comprises, by weight percentage, 30%-40% of liquid wax oil, 20%-30% of carbon twelve, 5%-10% of palm oil, 5%-10% of methanol, 5%-10% of ethanol, 2.5%-5% of isopropanol, 0.2%-0.5% of pour point depressant, 0.01%-0.2% of antioxidant, 1%-5% of methyl tert-butyl ether, 0.05%-0.2% of dispersing detergent, 1%-3% of cetane number improver, 0.5%-1% of surfactant and 0.01%-0.05% of carbon deposit cleaner.

[0006] Further, preferably: in terms of weight percentage: including: 30% liquid wax oil; 30% carbon twelve; 8% palm oil; 10% methanol; 10% ethanol; 3.45% isopropanol; 0.3% pour point depressant; 0.07% antioxidant; 4% methyl tert-butyl ether; 0.15% dispersing detergent; 2.5% cetane number improver; 0.5% surfactant; 0.03% carbon deposit cleaner.

[0007] Further, preferably: the pour point depressant is ethylene-vinyl acetate copolymer.

[0008] Furthermore, preferably, the antioxidant is butylated hydroxyanisole.

[0009] Further, preferably: the dispersing detergent is polyisobutylene amine,

[0010] Further, preferably: the cetane number improver is ethyl nitrate.

[0011] Furthermore, preferably, the surfactant is a polyether surfactant, which can be at least one of polyoxyethylene lauryl alcohol ether and fatty alcohol polyoxyethylene ether carboxylate.

[0012] The method for preparing the vehicle liquid wax RE fuel of the present invention comprises the following steps:

[0013] (1) Mix liquid wax oil, carbon dodecahydrate, palm oil, methanol, ethanol and isopropanol at 40° C.

[0014] (2) adding the remaining ingredients and continuing to stir and mix to obtain a semi-finished product;

[0015] (3) filtering the semi-finished product to obtain finished oil;

[0016] (4) The finished oil is tested and certified after passing the test.

[0017] The vehicle liquid wax RE fuel prepared by the present invention can be used in diesel vehicles, industrial boilers, etc., and can completely replace traditional increasingly exhausted petrochemical fuels and other diesel products with relatively high costs.

[0018] Beneficial effects of the present invention:

[0019] The present invention makes full use of the advantages of each raw material and overcomes their respective defects by reasonably proportioning liquid wax oil, C12, palm oil, methanol and ethanol, so as to prepare blended diesel with excellent combustion performance, good lubricity, good low-temperature fluidity and outstanding environmental performance. The multi-raw material synergistic blending method not only improves the comprehensive performance of diesel, but also reduces the production cost, and has high economic and environmental value.

[0020] The vehicle liquid wax RE fuel prepared by the present invention has a low freezing point, is not easy to solidify at low temperature, has a flash point higher than the national standard, has no fire and poisoning risks, is not a hazardous chemical, is convenient to store and transport, can be stored and transported in ordinary iron, stainless steel, and plastic containers, has no risk of combustion and explosion, is more resistant to burning than various types of diesel available on the market, and has a lower comprehensive use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The figure is the stability test result of the vehicle liquid wax RE fuel of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in combination with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] A vehicle liquid wax RE fuel comprises, by weight percentage, 30%-40% of liquid wax oil, 20%-30% of carbon twelve, 5%-10% of palm oil, 5%-10% of methanol, 5%-10% of ethanol, 2.5%-5% of isopropanol, 0.2%-0.5% of pour point depressant, 0.01%-0.2% of antioxidant, 1%-5% of methyl tert-butyl ether, 0.05%-0.2% of dispersing detergent, 1%-3% of cetane number improver, 0.5%-1% of surfactant and 0.01%-0.05% of carbon deposit cleaner.

[0025] The method for preparing the vehicle liquid wax RE fuel of the present invention comprises the following steps:

[0026] (1) Mix liquid wax oil, carbon dodecahydrate, palm oil, methanol, ethanol and isopropanol at 40° C.

[0027] (2) adding the remaining ingredients and continuing to stir and mix to obtain a semi-finished product;

[0028] (3) filtering the semi-finished product to obtain finished oil;

[0029] (4) The finished oil is tested and certified after passing the test.

[0030] The pour point depressant is ethylene-vinyl acetate copolymer. The antioxidant is butylated hydroxyanisole. The dispersing detergent is polyisobutylene amine, and the cetane number improver is ethyl nitrate. The surfactant is a polyether surfactant, which can be at least one of polyoxyethylene lauryl alcohol ether and fatty alcohol polyoxyethylene ether carboxylate. The embodiment of the present invention uses polyoxyethylene lauryl alcohol ether.

[0031] Table 1 Physical and chemical properties of different raw materials

[0032]

[0033]

[0034] The pour point depressant is ethylene-vinyl acetate copolymer (EVA), specifically EVA20 from DuPont of the United States.

[0035] The carbon deposit cleaner uses polyetheramine with a relative molecular mass of 800 to 1500, produced by Lubrizol Corporation in the United States.

[0036] There are no special requirements for other raw materials as long as they meet the relevant requirements for preparing fuel.

[0037] Example 1

[0038] A vehicle liquid wax RE fuel comprises, by weight percentage, 30% liquid wax oil, 30% C12, 9% palm oil, 10% methanol, 10% ethanol, 3.45% isopropanol, 0.3% pour point depressant, 0.07% antioxidant, 4% methyl tert-butyl ether, 0.15% dispersing detergent, 2.5% cetane number improver, 0.5% surfactant and 0.03% carbon deposit cleaner.

[0039] The pour point depressant is ethylene-vinyl acetate copolymer, the antioxidant is butylated hydroxyanisole, the dispersing detergent is polyisobutylene amine, the cetane number improver is ethyl nitrate, and the surfactant is polyoxyethylene lauryl alcohol ether.

[0040] The preparation method thereof comprises the following steps:

[0041] (1) Mix liquid wax oil, C12, palm oil, methanol, ethanol and isopropanol at 40° C.

[0042] (2) adding the remaining ingredients and continuing to stir and mix to obtain a semi-finished product;

[0043] (3) filtering the semi-finished product to obtain finished oil;

[0044] (4) The finished oil is tested and certified after passing the test.

[0045] Comparative Examples 1-4

[0046] It is basically the same as Example 1, except that the ratio of liquid wax oil to palm oil is different. The specific ratio is shown in Table 2.

[0047] The prepared automotive liquid wax RE fuel was measured according to the method of GB19147-2016 automotive diesel. The specific results are shown in Table 2.

[0048] Table 2 Effect of different base oil compositions on automotive liquid wax RE fuel

[0049]

[0050]

[0051] It can be seen from the above table that the automotive liquid wax RE fuel of the present invention has good combustion performance and meets the technical requirements of automotive diesel (V).

[0052] The present invention adopts liquid wax oil, carbon twelve, palm oil, methanol and ethanol as base oils to prepare diesel by blending. Liquid wax oil has a higher cetane number, can significantly improve the combustion performance of diesel, and improve the starting performance and running stability of the engine. Liquid wax oil has good low-temperature fluidity, which can improve the performance of diesel in low-temperature environments. However, it has poor lubricity and may cause wear of engine parts. Palm oil contains long-chain fatty acid esters, which can improve lubricity and make up for the shortcomings of liquid wax oil. C12 (dodecane) has good lubricity and can further improve the lubricity of blended diesel.

[0053] C12 is a straight-chain alkane with a high cetane number and good combustion performance, which can improve the combustion efficiency of diesel. C12 has good lubricity and can improve the lubricity of blended diesel. C12 has poor low-temperature fluidity, which may cause diesel to wax in low-temperature environments. Liquid wax oil has good low-temperature fluidity, which can make up for the poor low-temperature performance of C12. Methanol and ethanol: Methanol and ethanol have lower freezing points, which can further improve the low-temperature fluidity of diesel.

[0054] Palm oil contains long-chain fatty acid esters, which can improve the lubricity of diesel and reduce the wear of engine parts. Palm oil has good renewability and can reduce the carbon emissions of diesel. Palm oil has a low cetane number, which may affect the combustion performance of diesel. Palm oil has poor oxidation stability, which may cause the quality of diesel to deteriorate during storage. Liquid wax oil and C12 have high cetane numbers, which can make up for the lack of palm oil combustion performance. Methanol and ethanol have antioxidant effects and can improve the oxidation stability of blended diesel. Methanol has a high oxygen content, which can promote the full combustion of diesel and reduce the emission of particulate matter (PM) and hydrocarbons (HC). Methanol and ethanol have low freezing points and can improve the low-temperature fluidity of diesel. Methanol has a low calorific value, which may cause the energy density of diesel to decrease. Liquid wax oil and C12 have a high calorific value, which can make up for the lack of methanol energy density. Ethanol can work synergistically with methanol to reduce the corrosiveness of methanol. Ethanol has a high oxygen content, which can improve the combustion performance of diesel and reduce pollutant emissions. Ethanol has a low freezing point, which can further improve the low-temperature fluidity of diesel. However, the calorific value of ethanol is low, which may cause the energy density of diesel to decrease. Ethanol has strong water absorption, which may cause diesel to absorb water and deteriorate during storage. Liquid wax oil and C12 have higher calorific values ​​and can make up for the lack of ethanol's energy density. Palm oil can improve the stability of blended diesel and reduce the impact of ethanol's water absorption.

[0055] The mutual promotion between their raw materials jointly provides fuel performance: the high cetane number of liquid wax oil and C12 works synergistically with the oxygen content of palm oil, methanol and ethanol to significantly improve the combustion efficiency and cleanliness of diesel. The lubricating properties of palm oil and C12 make up for the lack of lubricity of liquid wax oil and reduce engine wear. The low-temperature properties of liquid wax oil, methanol and ethanol work synergistically to improve the low-temperature fluidity of diesel and avoid waxing. The oxygen content of methanol and ethanol promotes full combustion and reduces pollutant emissions, while the renewability of palm oil reduces carbon emissions. The antioxidant effect of methanol and ethanol works synergistically with the stability of palm oil to improve the storage stability of blended diesel.

[0056] Stability determination of liquid wax RE fuel for vehicles

[0057] The automotive liquid wax RE fuel prepared in Example 1 and Comparative Examples 1-4 was kept at room temperature, and the oxidation stability at different times was measured. The specific results are shown in Figure 1 .

[0058] Depend on Figure 1 It can be seen that the oxidation stability of the automotive liquid wax RE fuel of the present invention does not change much after being stored at room temperature for 60 days, reaching a maximum of 1.08, and has good stability. The oxidation stability of comparative examples 1-4 changes greatly, especially comparative examples 3 and 4, which increase to more than 2.5 after 30 days.

[0059] Example 2

[0060] A vehicle liquid wax RE fuel comprises, by weight percentage, 40% of liquid wax oil, 25% of C12, 5% of palm oil, 10% of methanol, 8% of ethanol, 5% of isopropanol, 0.5% of pour point depressant, 0.01% of antioxidant, 4.5% of methyl tert-butyl ether, 0.05% of dispersing detergent, 1% of cetane number improver, 0.93% of surfactant and 0.01% of carbon deposit cleaner.

[0061] The pour point depressant is ethylene-vinyl acetate copolymer, the antioxidant is butylated hydroxyanisole, the dispersing detergent is polyisobutylene amine, the cetane number improver is ethyl nitrate, and the surfactant is polyoxyethylene lauryl alcohol ether.

[0062] The preparation method is the same as that in Example 1 and will not be described again.

[0063] Example 3

[0064] A vehicle liquid wax RE fuel comprises, by weight percentage, 35% liquid wax oil, 30% C12, 10% palm oil, 8% methanol, 5% ethanol, 2.5% isopropanol, 0.2% pour point depressant, 0.05% antioxidant, 5% methyl tert-butyl ether, 0.2% dispersing detergent, 3% cetane number improver, 1% surfactant and 0.05% carbon deposit cleaner.

[0065] The pour point depressant is ethylene-vinyl acetate copolymer, the antioxidant is butylated hydroxyanisole, the dispersing detergent is polyisobutylene amine, the cetane number improver is ethyl nitrate, and the surfactant is polyoxyethylene lauryl alcohol ether.

[0066] The preparation method is the same as that in Example 1 and will not be described again.

[0067] Example 4

[0068] A vehicle liquid wax RE fuel comprises, by weight percentage, 40% liquid wax oil, 20% C12, 10% palm oil, 10% methanol, 10% ethanol, 5% isopropanol, 0.5% pour point depressant, 0.1% antioxidant, 1.5% methyl tert-butyl ether, 0.1% dispersing detergent, 1.96% cetane number improver, 0.8% surfactant and 0.04% carbon deposit cleaner.

[0069] The pour point depressant is ethylene-vinyl acetate copolymer, the antioxidant is butylated hydroxyanisole, the dispersing detergent is polyisobutylene amine, the cetane number improver is ethyl nitrate, and the surfactant is polyoxyethylene lauryl alcohol ether.

[0070] The preparation method is the same as that in Example 1 and will not be described again.

[0071] Example 5

[0072] A vehicle liquid wax RE fuel comprises, by weight percentage, 38% of liquid wax oil, 30% of C12, 10% of palm oil, 5% of methanol, 7% of ethanol, 4% of isopropanol, 0.4% of pour point depressant, 0.08% of antioxidant, 1.7% of methyl tert-butyl ether, 0.18% of dispersing detergent, 3% of cetane number improver, 0.6% of surfactant and 0.04% of carbon deposit cleaner.

[0073] The pour point depressant is ethylene-vinyl acetate copolymer, the antioxidant is butylated hydroxyanisole, the dispersing detergent is polyisobutylene amine, the cetane number improver is ethyl nitrate, and the surfactant is polyoxyethylene lauryl alcohol ether.

[0074] The preparation method is the same as that in Example 1 and will not be described again.

[0075] The prepared automotive liquid wax RE fuel was measured according to the method of GB19147-2016 automotive diesel. The specific results are shown in Table 3.

[0076] Table 3 Performance test results of automotive liquid wax RE fuel prepared in different embodiments

[0077]

[0078]

[0079] It can be seen from Table 3 that the performance of the automotive liquid wax RE fuel prepared by the present invention is good and meets the technical requirements of automotive diesel (V).

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid wax RE fuel for vehicle, characterized in that: According to weight percentage: including liquid wax oil 30%-40%; carbon dodecahydrate 20%-30%; palm oil 5%-10%; methanol 5%-10%; ethanol 5%-10%; isopropanol 2.5-5%, pour point depressant 0.2%-0.5%; antioxidant 0.01%-0.2%; methyl tert-butyl ether 1%-5%; dispersing cleaner 0.05%-0.2%; cetane number improver 1%-3%; surfactant 0.5%-1%; carbon deposit cleaner 0.01%-0.05%.

2. The vehicle liquid wax RE fuel according to claim 1, characterized in that: According to weight percentage: including liquid wax oil 30%; carbon twelve 30%; palm oil 8%; methanol 10%; ethanol 10%; Isopropyl alcohol: 3.45%, pour point depressant 0.3%; antioxidant 0.07%; methyl tert-butyl ether 4%; Dispersing cleaner 0.15%; cetane number improver 2.5%; surfactant 0.5%; carbon deposit cleaner 0.03%.

3. The vehicle liquid wax RE fuel according to claim 1, characterized in that: The pour point depressant is ethylene-vinyl acetate copolymer.

4. The vehicle liquid wax RE fuel according to claim 1, characterized in that: The antioxidant is butylated hydroxyanisole.

5. The vehicle liquid wax RE fuel according to claim 1, characterized in that: The dispersing cleaning agent is polyisobutylene amine.

6. The vehicle liquid wax RE fuel according to claim 1, characterized in that: The cetane number improver is ethyl nitrate.

7. The vehicle liquid wax RE fuel according to claim 1, characterized in that: The surfactant is the polyether surfactant.

8. The vehicle liquid wax RE fuel according to claim 1, characterized in that: The carbon deposit cleaning agent is polyetheramine.

9. A method for preparing a liquid wax RE fuel for vehicles according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) Mix liquid wax oil, carbon dodecahydrate, palm oil, methanol, ethanol and isopropanol at 40° C. (2) adding the remaining ingredients and continuing to stir and mix to obtain a semi-finished product; (3) filtering the semi-finished product to obtain finished oil; (4) The finished oil is tested and certified after passing the test.

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