Method for preparing alcohol mixed liquid fuel

Abstract

The invention provides a method for preparing alcohol mixed liquid fuel, and relates to the field of alcohol liquid fuel. The method for preparing the alcohol mixed liquid fuel comprises the following steps: S1, respectively connecting raw material pipelines with a kettle body; s2, heating the kettle body; s3, injecting raw materials; s4, injecting a surfactant and stirring; s5, adding a fatty acid antioxidant, allyl alcohol and a heat stabilizer; s6, discharging a finished product; s7, filtering; and S8, sampling detection. According to the invention, by reasonably designing the proportion and the mixing process of the alcohol fuel, the combustion efficiency can be effectively improved, harmful emission can be reduced, meanwhile, good economy and practicability are kept, compared with hydrocarbon fuel, the fuel is renewable, the ignition temperature is far higher than that of gasoline and diesel oil, the ignition limit is wide, the theoretical air-fuel ratio is small, and the performance is superior to that of the hydrocarbon fuel; compared with hydrocarbon fuels, the method has the advantages that oxides of nitrogen and sulfur in discharged gas can be reduced by 35%-52%, the energy consumption rate is increased by 5%-10%, and the fuel saving rate is increased by 1%-1.5%.

Description

Technical Field

[0001] The invention relates to the field of alcohol liquid fuels, in particular to a method for preparing alcohol mixed liquid fuels. Background Art

[0002] Alcohol mixed liquid fuel generally refers to a liquid fuel mixed from two or more alcohols. This type of fuel is widely used in the energy and chemical fields. The use of alcohol fuel can reduce greenhouse gas emissions and help address climate change. Alcohol fuel can be extracted from a variety of raw materials, such as crops, waste, etc., and has strong sustainability. Therefore, alcohol mixed liquid fuel is an important alternative energy option that helps promote sustainable development and the use of clean energy.

[0003] The existing single alcohol fuel has certain limitations in terms of calorific value, combustion efficiency and environmental impact, which reduces the combustion efficiency. At the same time, in terms of emissions, it may increase the emissions of nitrogen and sulfur oxides in the gas, which is not conducive to environmental protection requirements. Compared with hydrocarbon fuels, alcohol fuels are flammable and explosive. Improper handling and storage may lead to fire and explosion accidents. Oil and gas extraction and transportation may cause damage to the ecological environment. Regarding the existing alcohol mixed liquid preparation method, when preparing the alcohol mixed liquid fuel, the viscosity of the liquid may be large at some moments, thereby reducing the kinetic energy between molecules, causing the molecules to move more slowly, thereby reducing the fuel mixing speed, causing the company to reduce the production speed of the alcohol mixed liquid fuel. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a method for preparing an alcohol mixed liquid fuel, which solves the problem that the existing single alcohol fuel has certain limitations in calorific value, combustion efficiency and environmental impact, as well as the relatively low efficiency in the preparation of the existing alcohol mixed liquid fuel.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A method for preparing alcohol mixed liquid fuel, applied to equipment for mixing alcohol liquid fuel, the equipment comprises a kettle, a servo motor is fixedly connected to the center of the upper surface of the kettle, a stirring shaft is fixedly connected to the output end of the servo motor, stirring frames are fixedly connected to both sides of the lower surface of the stirring shaft, a plurality of triangular plates are fixedly connected to the inner top surface and the inner top surface of the stirring frame, a plurality of feed valve pipes are fixedly connected to the front end outer wall of the kettle, a threaded heating groove is provided inside the wall of the kettle, an exhaust valve pipe and an intake valve pipe are fixedly connected to the upper end and the lower end of the outer wall of one side of the kettle, respectively, and a discharge valve pipe is fixedly connected to the center of the lower surface of the kettle;

[0009] The method comprises the following steps:

[0010] S1. Connect the methanol supply pipe, the ethanol supply pipe, the propanol supply pipe and the butanol supply pipe to the feed valve pipe respectively;

[0011] S2. Connect the steam pipe to the intake valve pipe and the exhaust valve pipe respectively, so that the steam in the steam pipe enters the threaded heating groove, so that the temperature of the kettle wall increases, thereby increasing the temperature inside the kettle;

[0012] S3. 1-5 parts of methanol, 0.6-3 parts of ethanol, 0.2-1 parts of propanol and 0.1-1 parts of butanol are sequentially injected into the interior of the kettle through the feed valve pipe;

[0013] S4. When the raw materials enter the kettle, the viscosity of the liquid is reduced by increasing the temperature, and 0.1-0.5 surfactant is added to enhance the fluidity, and then the servo motor is started to drive the stirring frame to rotate counterclockwise to mix and stir the raw materials inside;

[0014] S5. After mixing, add 0.01-0.05 parts of fatty acid antioxidant, then add 0.1-0.5 of allyl alcohol, 0.05-0.1 of heat stabilizer, and then stir to mix evenly;

[0015] S6. After cooling and standing, open the discharge valve pipe, so that the mixed raw materials are discharged into the storage container through the discharge valve pipe;

[0016] S7. Perform necessary filtration to remove possible impurities in the mixed raw materials, and then allow the mixed materials to stand in a storage container;

[0017] S8. Take samples from each batch of mixed fuel and then test the mixed fuel for indicators such as calorific value, density and volatility to ensure that it meets the use requirements;

[0018] Through the above technical solution, the method has been significantly improved in efficiency, quality control and safety, which is suitable for industrial production needs. By using common industrial products on the market as raw materials, the complexity and cost of material procurement are reduced.

[0019] Furthermore, a base is fixedly connected to the lower end of the outer wall of the kettle body, and a plurality of supporting legs are fixedly connected to the lower surface of the base;

[0020] Through the above technical solution, the kettle body as a whole can be better supported.

[0021] Furthermore, the air inlet valve pipe and the exhaust valve pipe are both connected to the threaded heating groove, the plurality of feed valve pipes are connected to the interior of the kettle body, and the discharge valve pipe is connected to the kettle body;

[0022] Through the above technical scheme, the air inlet valve pipe and the exhaust valve pipe are connected with the threaded heating groove, so that the steam can better enter the interior of the threaded heating groove, and then the threaded heating groove is spiraled inside the wall of the kettle body to better heat the kettle body, and then multiple feed valve pipes are connected with the interior of the kettle body, and the discharge valve pipe is connected with the kettle body, so that it can be better filled and discharged.

[0023] Furthermore, in step S2, the preheating temperature of the kettle body is between 20°C and 60°C;

[0024] Through the above technical solution, by controlling the temperature between 20°C and 60°C, within this range, the viscosity of the liquid is low, which is conducive to the stirring effect.

[0025] Furthermore, in the step S4, the rotation speed of the servo motor during the mixing process is 300-500 rpm, and the stirring time is 15-30 minutes;

[0026] By using the above technical solution, stirring at a higher speed can effectively increase the contact area between the components, and long-term stirring can effectively make the components blend more thoroughly.

[0027] Furthermore, in step S1, the water content of methanol, ethanol, and propanol is 1%, and the water content of butanol is 0.5%, and methanol, ethanol, propanol, and butanol are all common industrial products sold on the market;

[0028] Through the above technical solution, the complexity and cost of material procurement can be effectively reduced.

[0029] Further, the heat stabilizer in step S4 is cyclopentaneate;

[0030] Through the above technical solution, the stability of the alcohol mixed fuel at high temperature can be effectively improved, and decomposition or generation of harmful substances at high temperature can be avoided.

[0031] Furthermore, the cooling temperature in step S6 is room temperature, and the standing time is 30 minutes;

[0032] Through the above technical solution, the molecular activity speed between the raw materials can be better reduced after the room temperature is lowered, thereby improving the safety, stability, efficiency and ability of the fuel to adapt to low-temperature environments. After standing for a period of time, the different components in the fuel can be effectively better integrated to form a more uniform mixture.

[0033] (III) Beneficial effects

[0034] The present invention provides a method for preparing alcohol mixed liquid fuel. It has the following beneficial effects:

[0035] 1. The present invention provides a method for preparing an alcohol mixed liquid fuel. The preparation method increases the temperature of the kettle body, thereby increasing the temperature of the alcohol liquid, thereby reducing the viscosity of the liquid by increasing the temperature, thereby enhancing the fluidity, and making it easier to achieve a uniform mixing effect. The servo motor drives the stirring frame to rotate counterclockwise, thereby stirring at a higher speed, which can effectively increase the contact area between the components and accelerate the mixing, so that the various alcohol liquids can be fused faster, thereby improving the production efficiency of the alcohol mixed liquid fuel.

[0036] 2. The present invention provides a method for preparing an alcohol mixed liquid fuel. The preparation method can effectively improve combustion efficiency and reduce harmful emissions by reasonably designing the proportion and mixing process of alcohol fuels, while maintaining good economy and practicality. Compared with hydrocarbon fuels, the fuel is renewable, has an ignition temperature much higher than gasoline and diesel, a wide ignition limit, a small theoretical air-fuel ratio, and better performance than hydrocarbon fuels. It is beneficial to internal combustion engines. Compared with hydrocarbon fuels, the nitrogen and sulfur oxides in the exhaust gas can be reduced by 35% to 52%, the energy consumption rate is increased by 5% to 10%, and the fuel saving rate is increased by 1% to 1.5%.

[0037] 3. The present invention provides a method for preparing an alcohol mixed liquid fuel, which has significant improvements in efficiency, quality control and safety, is suitable for industrial production needs, and reduces the complexity and cost of material procurement by using common industrial products on the market as raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is an axonometric view of the present invention;

[0039] Figure 2 It is a partial cross-sectional view of the present invention;

[0040] Figure 3 It is a schematic structural diagram of the stirring shaft in the present invention.

[0041] Among them, 1. kettle body; 2. servo motor; 3. feed valve pipe; 4. exhaust valve pipe; 5. base; 6. intake valve pipe; 7. support legs; 8. threaded heating tank; 9. stirring frame; 10. triangle plate; 11. stirring shaft; 12. discharge valve pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0043] Embodiment 1:

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a method for preparing an alcohol mixed liquid fuel, which is applied to an alcohol liquid fuel mixing device, wherein the device comprises a kettle 1, a servo motor 2 is fixedly connected at the center of the upper surface of the kettle 1, a stirring shaft 11 is fixedly connected to the output end of the servo motor 2, a stirring frame 9 is fixedly connected to both sides of the lower surface of the stirring shaft 11, a plurality of triangular plates 10 are fixedly connected to the inner top surface and the inner top surface of the stirring frame 9, a plurality of feed valve pipes 3 are fixedly connected to the front end outer wall of the kettle 1, a threaded heating groove 8 is provided inside the wall of the kettle 1, an exhaust valve pipe 4 and an intake valve pipe 6 are fixedly connected to the upper and lower ends of the outer wall on one side of the kettle 1, respectively, and a discharge valve pipe 12 is fixedly connected to the center of the lower surface of the kettle 1;

[0045] The method comprises the following steps:

[0046] S1. Connect the methanol supply pipe, ethanol supply pipe, propanol supply pipe and butanol supply pipe to the feed valve pipe 3 respectively;

[0047] S2. The steam pipe is connected to the intake valve pipe 6 and the exhaust valve pipe 4 respectively, so that the steam in the steam pipe enters the threaded heating groove 8, so that the temperature of the wall of the kettle body 1 is increased, thereby increasing the temperature inside the kettle body 1;

[0048] S3. 1-5 parts of methanol, 0.6-3 parts of ethanol, 0.2-1 parts of propanol and 0.1-1 parts of butanol are sequentially injected into the interior of the kettle body 1 through the feed valve tube 3;

[0049] S4. When the raw materials enter the kettle 1, the viscosity of the liquid is reduced by increasing the temperature, and 0.1-0.5 surfactant is added to enhance the fluidity, and then the servo motor 2 is started, so that the servo motor 2 drives the stirring frame 9 to rotate counterclockwise to mix and stir the raw materials inside;

[0050] S5. After mixing, add 0.01-0.05 parts of fatty acid antioxidant, then add 0.1-0.5 of allyl alcohol, 0.05-0.1 of heat stabilizer, and then stir to mix evenly;

[0051] S6. After cooling and standing, open the discharge valve pipe 12, so that the mixed raw materials are discharged into the storage container through the discharge valve pipe 12;

[0052] S7. Perform necessary filtration to remove possible impurities in the mixed raw materials, and then allow the mixed materials to stand in a storage container;

[0053] S8. Take samples from each batch of mixed fuel and then test the mixed fuel for indicators such as calorific value, density and volatility to ensure that it meets the use requirements;

[0054] This method has significant improvements in efficiency, quality control and safety, and is suitable for industrial production needs. By using common industrial products on the market as raw materials, it reduces the complexity and cost of material procurement.

[0055] like Figure 2 As shown, a base 5 is fixedly connected to the lower end of the outer wall of the kettle body 1, and a plurality of supporting legs 7 are fixedly connected to the lower surface of the base 5, which can better support the kettle body 1 as a whole. The air inlet valve pipe 6 and the exhaust valve pipe 4 are both connected with the threaded heating groove 8, and a plurality of feed valve pipes 3 are connected with the interior of the kettle body 1, and the discharge valve pipe 12 is connected with the kettle body 1. Through the air inlet valve pipe 6 and the exhaust valve pipe 4 being connected with the threaded heating groove 8, steam can better enter the interior of the threaded heating groove 8, and then the kettle body 1 can be better heated by circling the threaded heating groove 8 inside the wall of the kettle body 1, and then through the plurality of feed valve pipes 3 being connected with the interior of the kettle body 1, and the discharge valve pipe 12 being connected with the kettle body 1, it can be better filled and discharged.

[0056] In step S2, the preheating temperature of the kettle body 1 is between 20°C and 60°C. By controlling the temperature between 20°C and 60°C, within this range, the viscosity of the liquid is low, which is conducive to the stirring effect. During the mixing process in step S4, the speed of the servo motor 2 is 300-500rpm, and the stirring time is 15-30 minutes. Stirring at a higher speed can effectively increase the contact area between the components, and the long-term stirring can effectively make the components more thoroughly fused. In step S1, the water content of methanol, ethanol and propanol is 1%, and the water content of butanol is 0.5%. Methanol, ethanol, propanol and butanol are all industrial general products sold on the market, which can effectively reduce the complexity and cost of material procurement.

[0057] The heat stabilizer in step S4 is cyclopentaneate, which can effectively improve the stability of the alcohol mixed fuel at high temperature and avoid decomposition or generation of harmful substances at high temperature. The cooling temperature in step S6 is room temperature and the standing time is 30 minutes. After the room temperature is lowered, the molecular activity speed between the raw materials can be better reduced, thereby improving the safety, stability, efficiency and ability of the fuel to adapt to low temperature environment. After standing for a period of time, the different components in the fuel can be effectively better integrated to form a more uniform mixture.

[0058] Embodiment 2:

[0059] Prepare 1KG of alcohol mixed liquid fuel, prepare a 3L stainless steel reactor, connect the methanol supply pipe, ethanol supply pipe, propanol supply pipe and butanol supply pipe to the feed valve pipe 3 respectively, and then connect the steam pipe to the intake valve pipe 6 and the exhaust valve pipe 4 respectively, so that the steam in the steam pipe enters the threaded heating groove 8, so that the temperature of the wall of the reactor 1 is increased, thereby increasing the temperature inside the reactor 1, so that after the fuel is injected into the reactor 1, the viscosity between the various alcohol fuels is reduced, so that they can be mixed faster, and then 500g of methanol and 300g of ethanol are injected into the reactor through the feed valve pipe 3, and then the servo motor is started. 2. The servo motor 2 drives the stirring frame 9 to rotate counterclockwise to mix and stir the methanol and ethanol inside. When the methanol and ethanol are completely fused, 100g of propanol is injected through the feed valve pipe 3, and then the stirring is continued. After mixing, 100g of propanol is added to mix and stir again. After stirring, a propylene glycol surfactant is added at a mass ratio of 0.3%, a fatty acid antioxidant is added at 0.02%, and a cyclopentaneate heat stabilizer is added at 0.05%. After mixing, it is discharged through the discharge valve pipe 12, and then it is allowed to stand for 12 hours, and finally a sample is conducted through a filter with a pore size of 50μm.

[0060] Embodiment 3:

[0061] The performance of the mixed alcohol fuel prepared according to Example 2 was analyzed in a laboratory at a constant temperature of 25°C. The results showed that:

[0062]

[0063] Calorific value: The calorific value of this alcohol mixed fuel is 32.5MJ / kg, which is suitable for general industrial boilers and automobile engines and other combustion equipment. This calorific value meets the use standards of liquid fuels and can provide higher energy output;

[0064] Density: The density of the fuel is 0.81g / cm 3 , which is within the standard range of liquid fuel, means that the fuel has good fluidity at room temperature and can smoothly pass through the pipes and nozzles of the combustion equipment;

[0065] Volatility: The volatility of the mixed fuel is relatively low (4.2%), indicating that its evaporation loss at room temperature is small. Low volatility helps reduce fuel waste and improves storage and transportation safety;

[0066] Viscosity: The viscosity of the fuel is 1.2cP, which has good fluidity. Too high viscosity may cause poor flow of the fuel in the equipment, affecting combustion efficiency. The viscosity of 1.2cP is within a moderate range and is suitable for use in modern combustion devices.

[0067] Moisture content: The moisture content is 0.6%, which is lower than the requirement of 1%, indicating that the moisture content of the fuel is well controlled, which can ensure the efficiency of the fuel during combustion and the safety of the equipment;

[0068] Antioxidation: The mixed fuel treated with antioxidants exhibits excellent oxidation resistance at room temperature, with no obvious color change or precipitation, which indicates that it can maintain a long service life during storage and avoid performance degradation caused by oxidation;

[0069] And by comparing the prepared mixed alcohol fuel with a single alcohol fuel, it can be seen that:

[0070]

[0071] As can be seen from the above table, methanol has a relatively low calorific value, which makes it less ideal in applications with high energy requirements, while ethanol, propanol and butanol have higher calorific values, especially butanol, which has significant advantages. Ethanol is often used as an alternative fuel for automobiles and aircraft, while propanol and butanol are often used as fuels for high-performance internal combustion engines and industrial and agricultural equipment due to their higher calorific value and better combustion characteristics.

[0072] In this study, by adjusting the mixing ratio, we were able to make the calorific value of the alcohol mixed fuel between 28.2 and 31.0 MJ / kg, which is close to or exceeds that of traditional petroleum-based fuels. Therefore, this mixed fuel has great potential, especially in the context of replacing traditional energy and reducing dependence on fossil fuels, and has broad application prospects.

[0073]

[0074] The density of alcohol blended fuel is between other alcohol fuels, and its variation range is closely related to the ratio of raw materials. This provides flexibility for fuel storage and use, and helps to adjust according to actual needs;

[0075]

[0076] From the experimental data, it can be seen that methanol, ethanol and propanol have higher volatility, while butanol is relatively low. The volatility of alcohol mixed fuel depends on the mixing ratio, but it is usually moderate and can balance ignition and safety.

[0077]

[0078] This study used fatty acid antioxidants to successfully improve the antioxidant properties of alcohol blended fuels. The experimental results showed that the blended fuels showed significant stability during storage and could effectively extend the service life of the fuels.

[0079] The exhaust gas after combustion was tested and the following results were obtained:

[0080]

[0081] When burning 2 liters of alcohol mixed fuel, under the condition of full combustion and good oxygen supply, the emission of pollutants such as CO2, NOx and HC is reduced. The mixed alcohol fuel helps protect the environment through its lower harmful emission characteristics. Lower CO and HC emissions usually mean a more complete combustion process, thereby improving energy utilization efficiency and reducing energy waste.

[0082]

[0083] Alcohol mixed fuel performance comparison table

[0084]

[0085] Emission performance comparison table

[0086]

[0087] Statistical table of the impact of different fuels on engine performance

[0088] According to the data shown in the above table, it can be concluded that alcohol mixed liquid fuel has significant advantages over traditional hydrocarbon fuels in many aspects. First, alcohol fuel has high renewability and meets the requirements of modern sustainable development. Secondly, alcohol fuel has a high ignition temperature and excellent combustion performance, which is particularly suitable for internal combustion engine operation. More importantly, alcohol mixed fuel can significantly reduce the emission of nitrogen oxides and sulfur oxides during use, improve air quality, and improve the energy efficiency of fuel, with obvious energy-saving effect. In addition, the use of alcohol fuel in internal combustion engines not only improves combustion efficiency, but also extends the service life of the engine.

[0089] According to the comparison of experimental data shown above, the existing alcohol fuels each have certain advantages, but also certain shortcomings. Methanol has a lower calorific value, while ethanol, propanol and butanol have higher calorific value and density, and are suitable as high-efficiency fuels. However, they have certain challenges in volatility and stability, especially under high temperature or long-term storage, they may degrade.

[0090] The alcohol mixed fuel method proposed in this study significantly improves the overall performance of the fuel by precisely controlling the mixing ratio and adding appropriate surfactants, antioxidants and thermal stabilizers. Especially in terms of calorific value, density, antioxidant properties and stability, the mixed fuel has obvious advantages and is suitable for a variety of application scenarios.

[0091] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing alcohol mixed liquid fuel, applied to an alcohol liquid fuel mixing device, characterized in that: The device comprises a kettle (1), wherein a servo motor (2) is fixedly connected at the center of the upper surface of the kettle (1), a stirring shaft (11) is fixedly connected to the output end of the servo motor (2), stirring frames (9) are fixedly connected to both sides of the lower surface of the stirring shaft (11), a plurality of triangular plates (10) are fixedly connected to the inner top surface and the inner top surface of the stirring frame (9), a plurality of feed valve pipes (3) are fixedly connected to the front end outer wall of the kettle (1), a threaded heating groove (8) is provided inside the wall of the kettle (1), an exhaust valve pipe (4) and an intake valve pipe (6) are fixedly connected to the upper end and the lower end of the outer wall of one side of the kettle (1), respectively, and a discharge valve pipe (12) is fixedly connected to the center of the lower surface of the kettle (1); The method comprises the following steps: S1. Connect the methanol supply pipe, the ethanol supply pipe, the propanol supply pipe and the butanol supply pipe to the feed valve pipe (3), respectively; S2. The steam pipe is connected to the air inlet valve pipe (6) and the exhaust valve pipe (4) respectively, so that the steam in the steam pipe enters the threaded heating groove (8), so that the temperature of the wall of the kettle body (1) is increased, thereby increasing the temperature inside the kettle body (1); S3. 1-5 parts of methanol, 0.6-3 parts of ethanol, 0.2-1 parts of propanol and 0.1-1 parts of butanol are sequentially injected into the interior of the kettle (1) through the feed valve tube (3); S4. When the raw materials enter the kettle (1), the viscosity of the liquid is reduced by increasing the temperature, and 0.1-0.5 of a surfactant is added to enhance the fluidity, and then the servo motor (2) is started, so that the servo motor (2) drives the stirring frame (9) to rotate counterclockwise to mix and stir the raw materials inside; S5. After mixing, add 0.01-0.05 parts of fatty acid antioxidant, then add 0.1-0.5 of allyl alcohol, 0.05-0.1 of heat stabilizer, and then stir to mix evenly; S6. After cooling and standing, open the discharge valve pipe (12) so that the mixed raw materials are discharged into the storage container through the discharge valve pipe (12); S7. Perform necessary filtration to remove possible impurities in the mixed raw materials, and then allow the mixed materials to stand in a storage container; S8. Take samples from each batch of mixed fuel and then test the mixed fuel for indicators such as calorific value, density and volatility to ensure that it meets the requirements for use.

2. A method for preparing an alcohol mixed liquid fuel according to claim 1, characterized in that: The lower end of the outer wall of the kettle body (1) is fixedly connected to a base (5), and the lower surface of the base (5) is fixedly connected to a plurality of supporting legs (7).

3. The method for preparing an alcohol mixed liquid fuel according to claim 1, characterized in that: The air inlet valve pipe (6) and the exhaust valve pipe (4) are both connected to the threaded heating groove (8), the plurality of feed valve pipes (3) are all connected to the interior of the kettle body (1), and the discharge valve pipe (12) is connected to the kettle body (1).

4. The method for preparing an alcohol mixed liquid fuel according to claim 1, characterized in that: In step S2, the preheating temperature of the kettle body (1) is between 20°C and 60°C.

5. The method for preparing an alcohol mixed liquid fuel according to claim 1, characterized in that: During the mixing process in step S4, the rotation speed of the servo motor (2) is 300-500 rpm, and the stirring time is 15-30 minutes.

6. The method for preparing an alcohol mixed liquid fuel according to claim 1, characterized in that: In step S1, the water content of methanol, ethanol and propanol is 1%, and the water content of butanol is 0.5%. Methanol, ethanol, propanol and butanol are all common industrial products sold on the market.

7. The method for preparing an alcohol mixed liquid fuel according to claim 1, characterized in that: The heat stabilizer in step S4 is cyclopentaneate.

8. The method for preparing alcohol mixed liquid fuel according to claim 1, characterized in that: The cooling temperature in step S6 is room temperature, and the standing time is 30 minutes.

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