Preparation method of safe and environment-friendly civil and industrial emulsified oil fuel

Abstract

The invention provides a preparation method of safe and environment-friendly civil and industrial emulsified oil fuel. The safe and environment-friendly civil and industrial emulsified oil fuel is prepared from the following raw materials: an oil phase, low-carbon alcohol, water, an oleophylic nano modifier and an interfacial agent; the oil phase, the low-carbon alcohol and the polymer thereof, the water, the oleophylic nano modifier and the interfacial agent are industrially used. Wherein the weight ratio of the oil phase to the low-carbon alcohol to the water to the oleophylic nano modifier to the interfacial agent is as follows: 50%-85% of the oil phase, 5%-30% of the low-carbon alcohol, 5%-30% of the water, 0.5%-2% of the oleophylic nano modifier and 0.5%-5% of the interfacial agent; wherein the water is deionized water; the product is a white emulsion, has no pungent smell, has no corrosion to metal and is an oil-in-water system, the nano material and the interfacial agent are utilized, the materials change fuel oil molecular clusters and liquid drop surface properties, water films are formed on the surfaces of oil phase liquid drops, water is a continuous phase, and combustible substances are wrapped by a small amount of water films and are isolated from the environment.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel preparation, and specifically relates to a method for preparing safe and environmentally friendly civil and industrial emulsified oil fuel. Background Art

[0002] Fuel emulsion oil belongs to the category of environmentally friendly fuel formed by mixing fuel additives and base oil. It can be divided into many categories according to emulsification technology and application, such as microemulsion type, mechanical emulsification type, etc., and is widely used in industrial combustion, automotive power and other fields. In short, fuel emulsion oil is two or more immiscible liquids (usually fuel oil and emulsifiers) that are formed into a uniform and stable emulsion through physical or chemical methods. This emulsion not only retains the combustion performance of the original fuel, but also has better environmental protection characteristics due to the addition of emulsifiers, such as reducing emissions and improving combustion efficiency.

[0003] Existing products are not safe, stable and environmentally friendly enough. Traditional oil-in-water products freeze and demulsify under low temperature conditions and cannot be stored and used.

[0004] In summary, the present invention provides a method for preparing a safe and environmentally friendly civilian and industrial emulsified oil fuel to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel to solve the problems of insufficient product safety, stability and environmental protection in the prior art. The traditional water-in-oil product freezes under low temperature conditions, demulsifies, and cannot be stored and used.

[0006] A method for preparing safe and environmentally friendly civil and industrial emulsified oil fuel, comprising the following raw materials:

[0007] Civilian use: oil phase, low-carbon alcohol, water, lipophilic nano-modifier, surfactant;

[0008] Industrial use: oil phase, low-carbon alcohols and their polymers, water, lipophilic nano-modifiers, surfactants;

[0009] The weight ratio of the oil phase, low-carbon alcohol, water, lipophilic nano-modifier and surfactant is: 50% to 85% of the oil phase, 5% to 30% of the low-carbon alcohol, 5% to 30% of the water, 0.5% to 2% of the lipophilic nano-modifier and 0.5% to 5% of the surfactant;

[0010] Wherein, water is deionized water.

[0011] The following steps are also included:

[0012] S1: adding the required lipophilic nano-modifier and surfactant to the low-carbon alcohol in proportion, mixing, and emulsifying and dispersing with a homogenizer at 20-50° C. to obtain a preparation intermediate mixture A;

[0013] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse for 30 to 60 minutes using an ultrasonic disperser at 2000 to 10000 rpm to obtain mixtures B and C;

[0014] S3: Finally, the mixture B and the mixture C are added into a homogenizing emulsifier, and dispersed for 30 to 180 minutes at 2000 to 10000 rpm to prepare a product.

[0015] Furthermore, the lipophilic nano modifier is a mixture of lipophilic modified nano magnesium oxide, lipophilic nano barium sulfate and lipophilic nano zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature.

[0016] Furthermore, the lipophilic nano-modifier used is an isomeric fatty acid, an alcohol ether phosphate monoester, or an alcohol ether succinic acid monoester;

[0017] Among them, the weight percentages of the three are:

[0018] Fatty acids 10% to 30%;

[0019] Alcohol ether phosphate monoester 30% to 50%;

[0020] Alcohol ether succinic acid monoester 20% to 60%;

[0021] The ratio of the lipophilic modifier to the nanomaterial is 5% to 20% by weight;

[0022] Among them, the particle size of the nanomaterial is 60 to 100 nm.

[0023] Furthermore, the modification method of the lipophilic modifier comprises:

[0024] Add 100 parts of nanomaterials to 1000 parts of ethanol, add 5 to 20 parts of lipophilic modifiers and react for 30 to 120 minutes under stirring at 40 to 55°C;

[0025] The ethanol is then evaporated to prepare the lipophilic nano-modifier.

[0026] Furthermore, the surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether, and alkylamide;

[0027] The weight percentage of the raw materials is 10% to 30% of Span, 30% to 60% of fatty alcohol polyoxyethylene ether, and 10% to 40% of alkylamide, and the preparation method is mechanical mixing.

[0028] Furthermore, the civilian oil phase adopts one or a mixture of vegetable oil, recycled waste oil, and white oil.

[0029] Furthermore, the industrial oil phase is diesel, liquid wax, biodiesel, recycled oil or a mixture of the two or more thereof.

[0030] Furthermore, the low-carbon alcohols and polymers thereof are ethylene glycol, propylene glycol, pentanol, hexanol and polymers thereof.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The product of the present invention has the appearance of a white emulsion, has no irritating odor, is non-corrosive to metals, is a water-in-oil system, and utilizes nanomaterials and surfactants. These materials change the surface properties of fuel oil molecular clusters and droplets, and form a water film on the surface of the oil phase droplets. Water is a continuous phase, and the combustible material is wrapped by a small amount of water film and isolated from the environment. Therefore, the product has stable performance and high safety during production, storage, transportation, and use. It is not easily ignited by open flames, and there is no smoke or irritating odor when burning.

[0033] 2. The product produced in the present invention has a small amount of low-carbon alcohol in the water film, which greatly reduces the freezing point of the water film. It can still be used normally at -20°C and has good low-temperature stability. At the same time, due to the presence of nanomaterials and surfactants, the interfacial forces between fuel molecular clusters and droplets are reduced. During combustion, the fuel oil clusters are sprayed and demulsified through a special atomizing device, so that the fuel oil clusters are fully in contact with the air before they can be ignited. This method improves the fuel combustion efficiency. The product emulsion made by this technology has stable performance and can be stably stored for more than 100 days at -20°C-40°C, which is convenient for transportation and use.

[0034] 3. The calorific value of different ratios of the product in the present invention can be adjusted in the range of 20000 kj / kg to 35000 kj / kg according to the use requirements, which has the effect of energy saving and emission reduction. Compared with traditional fuels, it has the advantages of safety, environmental protection, flexible and convenient use, and high cost performance, and has a good market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0036] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0037] like Figure 1 As shown;

[0038] Embodiment 1

[0039] Oil phase: 50 parts of a mixture of liquid wax and vegetable oil, the ratio of which is 40 parts of liquid wax and 10 parts of vegetable oil; 30 parts of low-carbon alcohol, 26 parts of water, 2 parts of lipophilic nano-modifier and 2 parts of surfactant.

[0040] The lipophilic nano-modifier is a mixture of lipophilic modified nano-magnesium oxide, lipophilic nano-barium sulfate and lipophilic nano-zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature;

[0041] The lipophilic nano-modifier used is an isomeric fatty acid, alcohol ether phosphate monoester, and alcohol ether succinic acid monoester, and the weight percentage of the three is 10% fatty acid, 50% alcohol ether phosphate monoester, and 40% alcohol ether succinic acid monoester;

[0042] The weight ratio of the lipophilic modifier to the nano material is 10%. The modification method is to add 100 parts of the nano material into 1000 parts of ethanol, add 5 to 20 parts of the lipophilic modifier at 40 to 55° C. under stirring conditions, react for 30 to 120 minutes, and then evaporate the ethanol to prepare the lipophilic nano modifier.

[0043] Wherein, the low-carbon alcohol and its polymer are a mixture of 30% ethylene glycol, 2% glycerol, 2% polyethylene glycol and 6% hexanol;

[0044] The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkylamide, with a ratio of 30% Span, 30% fatty alcohol polyoxyethylene ether and 40% alkylamide, and the preparation method is mechanical mixing;

[0045] Wherein, water is deionized water.

[0046] The preparation of civil emulsified oil fuel includes the following steps:

[0047] S1: Add the required lipophilic nano-modifier and surfactant to the low-carbon alcohol in proportion, mix them, and emulsify and disperse them using a homogenizer at 20-50° C. to obtain a preparation intermediate mixture A;

[0048] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse them for 30 to 60 minutes respectively at 2000 to 10000 rpm using an ultrasonic disperser to obtain mixtures B and C;

[0049] S3: Finally, the mixture B and the mixture C are added into a homogenizing emulsifier, and dispersed for 30 to 180 minutes at 2000 to 10000 rpm to prepare a product.

[0050] The product has the appearance of a white emulsion, no irritating odor, is non-corrosive to metals, cannot be ignited by open flames, produces no smoke or irritating odor when burning, has a calorific value of 20,000 kj / kg, and can be stably stored for more than 100 days at -20°C to 40°C.

[0051] Embodiment 2

[0052] Oil phase: 85 parts of a mixture of liquid wax and vegetable oil, the ratio of the two being 75 parts of liquid wax and 10 parts of vegetable oil; 5 parts of low-carbon alcohol, 6.5 parts of water, 0.5 parts of lipophilic nano-modifier, and 2 parts of surfactant.

[0053] The lipophilic nano-modifier is a mixture of lipophilic modified nano-magnesium oxide, lipophilic nano-barium sulfate and lipophilic nano-zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature;

[0054] The lipophilic nano modifier used is an isomeric fatty acid, alcohol ether phosphate monoester, and alcohol ether succinic acid monoester, and the weight percentage of the three is 25% of fatty acid, 40% of alcohol ether phosphate monoester, and 35% of alcohol ether succinic acid monoester.

[0055] The weight ratio of the lipophilic modifier to the nano material is 20%. The modification method is to add 100 parts of the nano material into 1000 parts of ethanol, add 5 to 20 parts of the lipophilic modifier at 55°C under stirring conditions for 30 to 120 minutes, and then evaporate the ethanol to prepare the lipophilic nano modifier.

[0056] The low-carbon alcohol and its polymer are a mixture of 80% ethylene glycol, 5% glycerol, 8% polyethylene glycol and 7% amyl alcohol;

[0057] The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkylamide, with a ratio of 10% Span, 50% fatty alcohol polyoxyethylene ether and 40% alkylamide, and the preparation method is mechanical mixing;

[0058] Wherein, water is deionized water.

[0059] The preparation of civil emulsified oil fuel includes the following steps:

[0060] S1: Add the required lipophilic nano-modifier and surfactant to low-carbon alcohol in proportion, and emulsify and disperse them at 50° C. using a homogenizer to obtain an intermediate mixture A;

[0061] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse them for 180 minutes respectively at 2000 rpm using an ultrasonic disperser to obtain mixtures B and C;

[0062] S3: Finally, the mixture B and the mixture C are added into a homogenizer, and dispersed in the homogenizer at 2000 rpm for 60 minutes to prepare a product.

[0063] The product has the appearance of a white emulsion, no irritating odor, is non-corrosive to metals, cannot be ignited by open flames, produces no smoke or irritating odor when burning, has a calorific value of 35,000 kj / kg, and can be stably stored for more than 100 days at -20°C to 40°C.

[0064] Embodiment 3

[0065] Oil phase: 80 parts of a mixture of liquid wax and vegetable oil, the ratio of which is 60 parts of liquid wax and 20 parts of vegetable oil; 5 parts of low-carbon alcohol, 11 parts of water, 2 parts of lipophilic nano-modifier and 2 parts of surfactant.

[0066] The lipophilic nano-modifier is a mixture of lipophilic modified nano-magnesium oxide, lipophilic nano-barium sulfate and lipophilic nano-zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature;

[0067] The lipophilic nano-modifier used is an isomeric fatty acid, alcohol ether phosphate monoester, and alcohol ether succinic acid monoester, and the weight percentage of the three is 25% fatty acid, 40% alcohol ether phosphate monoester, and 35% alcohol ether succinic acid monoester;

[0068] The weight ratio of the lipophilic modifier to the nano material is 10%. The modification method is to add 100 parts of the nano material into 1000 parts of ethanol, add 5 to 20 parts of the lipophilic modifier at 40 to 55° C. under stirring conditions, react for 30 to 120 minutes, and then evaporate the ethanol to prepare the lipophilic nano modifier.

[0069] The low-carbon alcohol and its polymer are a mixture of 80% ethylene glycol, 5% glycerol, 8% polyethylene glycol and 7% amyl alcohol;

[0070] The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkylamide, with a ratio of 30% Span, 30% fatty alcohol polyoxyethylene ether and 40% alkylamide, and the preparation method is mechanical mixing;

[0071] Wherein, water is deionized water.

[0072] The preparation of civil emulsified oil fuel includes the following steps:

[0073] S1: Add the required lipophilic nano-modifier and surfactant to the low-carbon alcohol in proportion, mix them, and emulsify and disperse them using a homogenizer at 20-50° C. to obtain a preparation intermediate mixture A;

[0074] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse them for 30 to 60 minutes respectively at 2000 to 10000 rpm using an ultrasonic disperser to obtain mixtures B and C;

[0075] S3: Finally, the mixture B and the mixture C are added into a homogenizing emulsifier, and dispersed for 30 to 180 minutes at 2000 to 10000 rpm to prepare a product.

[0076] The product has the appearance of a white emulsion, no irritating odor, is non-corrosive to metals, cannot be ignited by open flames, produces no smoke or irritating odor when burning, has a calorific value of 30,000 kj / kg, and can be stably stored for more than 100 days at -20°C to 40°C.

[0077] Embodiment 4

[0078] Oil phase: 50 parts of a mixture of liquid wax and vegetable oil, the ratio of which is 40 parts of liquid wax and 10 parts of vegetable oil; 30 parts of low-carbon alcohol, 26 parts of water, 2 parts of lipophilic nano-modifier and 2 parts of surfactant.

[0079] The lipophilic nano-modifier is a mixture of lipophilic modified nano-magnesium oxide, lipophilic nano-barium sulfate and lipophilic nano-zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature;

[0080] The lipophilic nano-modifier used is an isomeric fatty acid, alcohol ether phosphate monoester, and alcohol ether succinic acid monoester, and the weight percentage of the three is 10% fatty acid, 50% alcohol ether phosphate monoester, and 40% alcohol ether succinic acid monoester;

[0081] The weight ratio of the lipophilic modifier to the nano material is 10%. The modification method is to add 100 parts of the nano material into 1000 parts of ethanol, add 5 to 20 parts of the lipophilic modifier at 40 to 55° C. under stirring conditions, react for 30 to 120 minutes, and then evaporate the ethanol to prepare the lipophilic nano modifier.

[0082] Wherein, the low-carbon alcohol and its polymer are a mixture of 30% ethylene glycol, 2% glycerol, 2% polyethylene glycol and 6% hexanol;

[0083] The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkylamide, with a ratio of 30% Span, 30% fatty alcohol polyoxyethylene ether and 40% alkylamide, and the preparation method is mechanical mixing;

[0084] Wherein, water is deionized water.

[0085] The preparation of industrial emulsified oil fuel includes the following steps:

[0086] S1: Add the required lipophilic nano-modifier and surfactant to the low-carbon alcohol in proportion, mix them, and emulsify and disperse them using a homogenizer at 20-50° C. to obtain a preparation intermediate mixture A;

[0087] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse them for 30 to 60 minutes respectively at 2000 to 10000 rpm using an ultrasonic disperser to obtain mixtures B and C;

[0088] S3: Finally, the mixture B and the mixture C are added into a homogenizing emulsifier, and dispersed for 30 to 180 minutes at 2000 to 10000 rpm to prepare a product.

[0089] The product has the appearance of a white emulsion, no irritating odor, is non-corrosive to metals, cannot be ignited by open flames, produces no smoke or irritating odor when burning, has a calorific value of 21,000 kj / kg, and can be stably stored for more than 100 days at -20°C to 40°C.

[0090] Embodiment 5

[0091] Oil phase: 85 parts of a mixture of liquid wax and vegetable oil, the ratio of the two being 75 parts of liquid wax and 10 parts of vegetable oil; 5 parts of low-carbon alcohol, 6.5 parts of water, 0.5 parts of lipophilic nano-modifier, and 2 parts of surfactant.

[0092] The lipophilic nano-modifier is a mixture of lipophilic modified nano-magnesium oxide, lipophilic nano-barium sulfate and lipophilic nano-zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature;

[0093] The lipophilic nano modifier used is an isomeric fatty acid, alcohol ether phosphate monoester, and alcohol ether succinic acid monoester, and the weight percentage of the three is 25% of fatty acid, 40% of alcohol ether phosphate monoester, and 35% of alcohol ether succinic acid monoester.

[0094] The weight ratio of the lipophilic modifier to the nano material is 20%. The modification method is to add 100 parts of the nano material into 1000 parts of ethanol, add 5 to 20 parts of the lipophilic modifier at 55°C under stirring conditions for 30 to 120 minutes, and then evaporate the ethanol to prepare the lipophilic nano modifier.

[0095] The low-carbon alcohol and its polymer are a mixture of 80% ethylene glycol, 5% glycerol, 8% polyethylene glycol and 7% amyl alcohol;

[0096] The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkylamide, with a ratio of 10% Span, 50% fatty alcohol polyoxyethylene ether and 40% alkylamide, and the preparation method is mechanical mixing;

[0097] Wherein, water is deionized water.

[0098] The preparation of industrial emulsified oil fuel includes the following steps:

[0099] S1: Add the required lipophilic nano-modifier and surfactant to low-carbon alcohol in proportion, and emulsify and disperse them at 50° C. using a homogenizer to obtain an intermediate mixture A;

[0100] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse them for 180 minutes respectively at 2000 rpm using an ultrasonic disperser to obtain mixtures B and C;

[0101] S3: Finally, the mixture B and the mixture C are added into a homogenizer, and dispersed in the homogenizer at 2000 rpm for 60 minutes to prepare a product.

[0102] The product has the appearance of a white emulsion, no irritating odor, is non-corrosive to metals, cannot be ignited by open flames, produces no smoke or irritating odor when burning, has a calorific value of 33,000 kj / kg, and can be stably stored for more than 100 days at -20°C to 40°C.

[0103] Embodiment 6

[0104] Oil phase: 80 parts of a mixture of liquid wax and vegetable oil, the ratio of which is 60 parts of liquid wax and 20 parts of vegetable oil; 5 parts of low-carbon alcohol, 11 parts of water, 2 parts of lipophilic nano-modifier and 2 parts of surfactant.

[0105] The lipophilic nano-modifier is a mixture of lipophilic modified nano-magnesium oxide, lipophilic nano-barium sulfate and lipophilic nano-zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature;

[0106] The lipophilic nano-modifier used is an isomeric fatty acid, alcohol ether phosphate monoester, and alcohol ether succinic acid monoester, and the weight percentage of the three is 25% fatty acid, 40% alcohol ether phosphate monoester, and 35% alcohol ether succinic acid monoester;

[0107] The weight ratio of the lipophilic modifier to the nano material is 10%. The modification method is to add 100 parts of the nano material into 1000 parts of ethanol, add 5 to 20 parts of the lipophilic modifier at 40 to 55° C. under stirring conditions, react for 30 to 120 minutes, and then evaporate the ethanol to prepare the lipophilic nano modifier.

[0108] The low-carbon alcohol and its polymer are a mixture of 80% ethylene glycol, 5% glycerol, 8% polyethylene glycol and 7% amyl alcohol;

[0109] The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkylamide, with a ratio of 30% Span, 30% fatty alcohol polyoxyethylene ether and 40% alkylamide, and the preparation method is mechanical mixing;

[0110] Wherein, water is deionized water.

[0111] The preparation of industrial emulsified oil fuel includes the following steps:

[0112] S1: Add the required lipophilic nano-modifier and surfactant to the low-carbon alcohol in proportion, mix them, and emulsify and disperse them using a homogenizer at 20-50° C. to obtain a preparation intermediate mixture A;

[0113] S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse them for 30 to 60 minutes respectively at 2000 to 10000 rpm using an ultrasonic disperser to obtain mixtures B and C;

[0114] S3: Finally, the mixture B and the mixture C are added into a homogenizing emulsifier, and dispersed for 30 to 180 minutes at 2000 to 10000 rpm to prepare a product.

[0115] The product has the appearance of a white emulsion, no irritating odor, is non-corrosive to metals, cannot be ignited by open flames, produces no smoke or irritating odor when burning, has a calorific value of 27,000 kj / kg, and can be stably stored for more than 100 days at -20°C to 40°C.

[0116] The calorific values ​​of different proportions of the products in the present invention can be adjusted within the range of 20000 kj / kg to 35000 kj / kg according to the use requirements, which has the effect of energy saving and emission reduction. Compared with traditional fuels, it has the advantages of safety, environmental protection, flexible and convenient use, and high cost performance, and has a good market prospect.

[0117] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for preparing safe and environmentally friendly civil and industrial emulsified oil fuel, characterized in that: Including the following ingredients: Civilian use: oil phase, low-carbon alcohol, water, lipophilic nano-modifier, surfactant; Industrial use: oil phase, low-carbon alcohols and their polymers, water, lipophilic nano-modifiers, surfactants; The weight ratio of the oil phase, low-carbon alcohol, water, lipophilic nano-modifier and surfactant is: 50% to 85% of the oil phase, 5% to 30% of the low-carbon alcohol, 5% to 30% of the water, 0.5% to 2% of the lipophilic nano-modifier and 0.5% to 5% of the surfactant; Wherein, water is deionized water. The following steps are also included: S1: adding the required lipophilic nano-modifier and surfactant to the low-carbon alcohol in proportion, mixing, and emulsifying and dispersing with a homogenizer at 20-50° C. to obtain a preparation intermediate mixture A; S2: Add the dispersed mixture A to the oil phase and water respectively according to the product oil-water ratio, and disperse for 30 to 60 minutes using an ultrasonic disperser at 2000 to 10000 rpm to obtain mixtures B and C; S3: Finally, the mixture B and the mixture C are added into a homogenizing emulsifier, and dispersed for 30 to 180 minutes at 2000 to 10000 rpm to prepare a product.

2. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 1, characterized in that: The lipophilic nano modifier is a mixture of lipophilic modified nano magnesium oxide, lipophilic nano barium sulfate and lipophilic nano zinc oxide, the weight ratio of the three is 2:1:1, and the mixing method is mechanical mixing at room temperature.

3. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 2, characterized in that: The lipophilic nano-modifier used is an isomeric fatty acid, an alcohol ether phosphate monoester, or an alcohol ether succinic acid monoester; Among them, the weight percentages of the three are: Fatty acids 10% to 30%; Alcohol ether phosphate monoester 30% to 50%; Alcohol ether succinic acid monoester 20% to 60%; The ratio of the lipophilic modifier to the nanomaterial is 5% to 20% by weight; Among them, the particle size of the nanomaterial is 60 to 100 nm.

4. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 3, characterized in that: The modification method of the lipophilic modifier comprises: Add 100 parts of nanomaterials to 1000 parts of ethanol, add 5 to 20 parts of lipophilic modifiers and react for 30 to 120 minutes under stirring at 40 to 55°C; The ethanol is then evaporated to prepare the lipophilic nano-modifier.

5. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 1, characterized in that: The surfactant is a mixture of Span, Tween, fatty alcohol polyoxyethylene ether and alkyl amide; The weight percentage of the raw materials is 10% to 30% of Span, 30% to 60% of fatty alcohol polyoxyethylene ether, and 10% to 40% of alkylamide, and the preparation method is mechanical mixing.

6. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 1, characterized in that: The civilian oil phase is one or a mixture of vegetable oil, recycled waste oil and white oil.

7. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 1, characterized in that: The industrial oil phase is diesel, liquid wax, biodiesel, recycled oil or a mixture of the two or more thereof.

8. The method for preparing safe and environmentally friendly civilian and industrial emulsified oil fuel as claimed in claim 1, characterized in that: The low-carbon alcohols and polymers thereof are ethylene glycol, propylene glycol, pentanol, hexanol and polymers thereof.

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