Hydrogen energy engine fuel oil taking coal-to-oil as base material and preparation method of hydrogen energy engine fuel oil

Abstract

The invention belongs to the technical field of fuel oil, and particularly relates to hydrogen energy engine fuel oil taking coal-to-oil as a base material and a preparation method of the hydrogen energy engine fuel oil. Comprising the following components: 35-45 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 5-15 parts of white oil, 2-8 parts of heavy wax, 15-25 parts of hydrogenated anthracene oil, 2-8 parts of fatty acid methyl ester, 15-25 parts of hydrogenated coal diesel oil and 1-5 parts of an additive. The preparation method comprises the following steps: S1, weighing the raw materials according to the proportion of the fuel oil of the hydrogen energy engine; and S2, adding the raw materials into a stirring container, and uniformly stirring to obtain the hydrogen energy engine fuel oil. The fuel oil does not belong to dangerous chemicals, the ignition performance of the fuel oil is superior to that of current national 6 diesel oil, the terminal sale price of the fuel oil is lower than that of the diesel oil, and market requirements are met.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel oil, and in particular relates to a hydrogen engine fuel oil based on coal-to-liquid and a preparation method thereof. Background Art

[0002] At present, all diesel is included in the management of hazardous chemicals, in order to severely crack down on some individuals or companies that use the name of their own gas stations to conduct external operations or trade in diesel.

[0003] After diesel is included in hazardous chemicals, safety supervision will be further strengthened in emergency management, environmental protection, circulation and transportation. Therefore, substitutes for diesel have emerged. They not only solve the pain points of the industry, but also, since diesel is extracted from crude oil, the emergence of diesel substitutes can improve my country's high dependence on imported crude oil.

[0004] However, the ignition performance of diesel substitutes is currently inferior to that of diesel, and the product cost of diesel substitutes is relatively high and cannot cater to the market. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a hydrogen engine fuel oil based on coal-to-oil and a preparation method thereof. The fuel oil does not belong to hazardous chemicals. Not only does it have better ignition performance than the current National VI diesel, but its terminal sales price is also lower than diesel, which meets market needs.

[0006] The specific technical solution adopted by the present invention is:

[0007] A hydrogen engine fuel oil based on coal-to-liquid, comprising the following components by weight:

[0008] 35-45 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 5-15 parts of white oil, 2-8 parts of heavy wax, 15-25 parts of hydrogenated anthracene oil, 2-8 parts of fatty acid methyl ester, 15-25 parts of hydrogenated coal diesel and 1-5 parts of additives.

[0009] Furthermore, the hydrogen engine fuel oil comprises the following components by weight:

[0010] 38-42 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 8-12 parts of white oil, 4-6 parts of heavy wax, 18-22 parts of hydrogenated anthracene oil, 4-6 parts of fatty acid methyl ester, 18-22 parts of hydrogenated coal diesel and 2-4 parts of additives.

[0011] Furthermore, the hydrogen engine fuel oil comprises the following components by weight:

[0012] 40 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 10 parts of white oil, 5 parts of heavy wax, 20 parts of hydrogenated anthracene oil, 5 parts of fatty acid methyl ester, 20 parts of hydrogenated coal diesel, and 3 parts of additives.

[0013] Furthermore, the preparation method of the additive comprises the following steps:

[0014] A. Prepare 30-40 parts of naphtha, 15-25 parts of hydrogenated light oil, 8-12 parts of methyl tert-butyl ether, 8-12 parts of alkylated isooctane, 8-12 parts of ethanol, 8-12 parts of heavy aromatics, 2-6 parts of stable light hydrocarbons, and 5-10 parts of xylene;

[0015] B. Add the components prepared in step A into a stirring container respectively, and stir for 20-30 minutes to obtain the additive.

[0016] The density of the naphtha is 0.7-0.72, the density of the hydrogenated light oil is 0.63-0.65, the distillation range of the naphtha is 60-180°C, and the distillation range of the hydrogenated light oil is 30-150°C.

[0017] The density of the heavy aromatics is 0.82-0.85, and the distillation range of the heavy aromatics is 120-210°C.

[0018] A method for preparing hydrogen engine fuel oil based on coal-to-liquid, comprising the following steps:

[0019] S1. Weigh the raw materials according to the ratio of hydrogen engine fuel oil;

[0020] S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

[0021] The beneficial effects of the present invention are:

[0022] 1. The closed cup flash point test value of the fuel oil prepared in the present invention is between 65-70, which is not within the index range of hazardous chemicals less than or equal to 60, and therefore does not belong to hazardous chemicals. In addition, a flash point value that is too large will cause the engine to be difficult to ignite, while the closed cup flash point test value of the fuel oil prepared in the present invention is within a more suitable range.

[0023] 2. The cetane number of this product is between 51-55. The cetane number is an important indicator to measure the ignition performance of diesel in compression ignition engines. A high cetane number indicates good ignition performance of diesel. At present, the cetane number of National VI diesel is between 45-51. Therefore, the fuel oil has better ignition performance, shorter ignition delay period, more uniform combustion, and smoother engine start-up;

[0024] In addition, if the cetane number is too high, greater than 60, the diesel will not burn completely, and the low-temperature fluidity, atomization and evaporation of the diesel will be affected, resulting in a decrease in engine power, increased fuel consumption and black smoke from the exhaust. Therefore, the cetane number of this product is between 51-55, which avoids the problem of incomplete combustion while ensuring good ignition performance. Compared with diesel, long-term use of this fuel oil can increase the service life of the machine.

[0025] 3. Diesel needs to pay 48% consumption tax in the circulation link, but this product, as a common chemical product, does not need to pay this consumption tax. Therefore, the terminal sales price of this product is lower than that of diesel.

[0026] In addition, the main component of this product is coal-based Fischer-Tropsch synthesis crude liquid wax (liquid wax), which is extracted from coal, while diesel is extracted from crude oil. my country is a major coal-producing country, and crude oil needs to be imported in large quantities. Changes in the international situation have a profound impact on diesel production and price changes. This product has stronger domestic autonomy and higher risk resistance, so its production and price are relatively stable.

[0027] 4. The sulfur index of this product is only 1-2, while the current sulfur index of diesel is 8-10. Compared with diesel, the pollution of this product is reduced by nearly 90%, which is more in line with the requirements of low-carbon and environmental protection.

[0028] 5. This product is suitable for engines that currently use diesel. That is, when this product is used to replace diesel, the engine does not need to be modified and has good adaptability. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. 1. Specific embodiments

[0031] Example 1

[0032] S1. Weigh 40 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 10 parts of white oil, 5 parts of heavy wax, 20 parts of hydrogenated anthracene oil, 5 parts of fatty acid methyl ester, 20 parts of hydrogenated coal diesel, and 3 parts of additives;

[0033] S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

[0034] Example 2

[0035] S1. Weigh 35 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 5 parts of white oil, 2 parts of heavy wax, 15 parts of hydrogenated anthracene oil, 2 parts of fatty acid methyl ester, 15 parts of hydrogenated coal diesel, and 1 part of additive;

[0036] S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

[0037] Example 3

[0038] S1. Weigh 45 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 15 parts of white oil, 8 parts of heavy wax, 25 parts of hydrogenated anthracene oil, 8 parts of fatty acid methyl ester, 25 parts of hydrogenated coal diesel, and 5 parts of additives;

[0039] S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

[0040] Example 4

[0041] S1. Weigh 38 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 8 parts of white oil, 4 parts of heavy wax, 18 parts of hydrogenated anthracene oil, 4 parts of fatty acid methyl ester, 18 parts of hydrogenated coal diesel, and 2 parts of additives;

[0042] S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

[0043] Example 5

[0044] S1. Weigh 42 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 12 parts of white oil, 6 parts of heavy wax, 22 parts of hydrogenated anthracene oil, 6 parts of fatty acid methyl ester, 22 parts of hydrogenated coal diesel, and 4 parts of additives;

[0045] S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

[0046] The preparation method of the additive in Examples 1-5 comprises the following steps:

[0047] A. Prepare 35 parts of naphtha, 20 parts of hydrogenated light oil, 10 parts of methyl tert-butyl ether, 10 parts of alkylated isooctane, 10 parts of ethanol, 10 parts of heavy aromatics, 5 parts of stable light hydrocarbons, and 7 parts of xylene;

[0048] B. Add the components prepared in step A into a stirring container respectively, and stir for 20-30 minutes to obtain the additive.

[0049] Comparative Example 1

[0050] The difference between Comparative Example 1 and Example 1 is that Comparative Example 1 does not contain any additive.

[0051] Comparative Example 2

[0052] Comparative Example 2 is a commercially available National VI diesel that meets national standards.

[0053] 2. Performance Test

[0054] The fuel oil and diesel in Examples 1-5 and Comparative Examples 1-2 were tested for performance, and the testing method was performed according to the relevant testing standards in the national standard GB19147-2016 "Automotive Diesel", as shown in Table 1.

[0055] Table 1

[0056]

[0057] It can be seen from Table 1 that the fuel oil prepared in the present invention not only has good combustion performance, but also has a low pollution value.

[0058] First of all, crude oil-based diesel has been included in the management of hazardous chemicals, and the control of crude oil-based diesel is relatively strict. At the same time, a large amount of pollutants will be generated during the use of crude oil-based diesel, which has a great impact on the environment. Coal-based diesel is not included in the management of hazardous chemicals.

[0059] Therefore, the fuel oil in the present invention is mainly coal-based oil, and a small amount of petroleum-based oil and additives are added in a specific ratio. The additives can improve the stability and cleanliness of the fuel oil. The components such as naphtha and hydrogenated light oil in the additives can improve the octane number of the fuel oil. Different components have different densities, and the density can be adjusted by cooperating with each other, so as to better mix with other components of the fuel oil.

[0060] At the same time, the molecular structure of heavy aromatics, xylene and other components in the additive contains benzene rings, which are stable in structure. It improves the combustion efficiency of fuel oil and its anti-knock performance, so that fuel oil can burn more stably in a high-temperature and high-pressure combustion environment, and the combustion of fuel oil is more thorough, thereby reducing the emission of harmful gases such as carbon monoxide formed by incomplete combustion;

[0061] In addition, xylene, as a solvent, can dissolve carbon deposits and sediments produced by the combustion of fuel oil, keep the engine clean, and further reduce pollutants produced by fuel oil.

[0062] This product is suitable for all engines that use petroleum diesel, that is, when this product is used to replace diesel, the engine does not need to be modified and has good adaptability.

Claims

1. A hydrogen engine fuel oil based on coal-to-liquid, characterized in that: By mass, it includes the following components: 35-45 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 5-15 parts of white oil, 2-8 parts of heavy wax, 15-25 parts of hydrogenated anthracene oil, 2-8 parts of fatty acid methyl ester, 15-25 parts of hydrogenated coal diesel and 1-5 parts of additives.

2. The hydrogen-powered engine fuel oil based on coal-to-liquids according to claim 1, characterized in that: The hydrogen engine fuel oil comprises the following components by weight: 38-42 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 8-12 parts of white oil, 4-6 parts of heavy wax, 18-22 parts of hydrogenated anthracene oil, 4-6 parts of fatty acid methyl ester, 18-22 parts of hydrogenated coal diesel and 2-4 parts of additives.

3. The hydrogen-powered engine fuel oil based on coal-to-liquids according to claim 1, characterized in that: The hydrogen engine fuel oil comprises the following components by weight: 40 parts of coal-based Fischer-Tropsch synthesis crude liquid wax, 10 parts of white oil, 5 parts of heavy wax, 20 parts of hydrogenated anthracene oil, 5 parts of fatty acid methyl ester, 20 parts of hydrogenated coal diesel, and 3 parts of additives.

4. The hydrogen-powered engine fuel oil based on coal-to-liquids according to claim 1, characterized in that: The preparation method of the additive comprises the following steps: A. Prepare 30-40 parts of naphtha, 15-25 parts of hydrogenated light oil, 8-12 parts of methyl tert-butyl ether, 8-12 parts of alkylated isooctane, 8-12 parts of ethanol, 8-12 parts of heavy aromatics, 2-6 parts of stable light hydrocarbons, and 5-10 parts of xylene; B. Add the components prepared in step A into a stirring container respectively, and stir for 20-30 minutes to obtain the additive.

5. The hydrogen-powered engine fuel oil based on coal-to-liquids according to claim 4, characterized in that: The density of the naphtha is 0.7-0.72, the density of the hydrogenated light oil is 0.63-0.65, the distillation range of the naphtha is 60-180°C, and the distillation range of the hydrogenated light oil is 30-150°C.

6. The coal-to-liquid-based hydrogen engine fuel oil according to claim 4, characterized in that: The density of the heavy aromatics is 0.82-0.85, and the distillation range of the heavy aromatics is 120-210°C.

7. A method for preparing hydrogen engine fuel oil based on coal-to-liquids as claimed in claim 1, characterized in that: The following steps are involved: S1. Weigh the raw materials according to the ratio of hydrogen engine fuel oil; S2. Add all raw materials into a stirring container and stir evenly to obtain hydrogen engine fuel oil.

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