CN110540878A

CN110540878A - methanol fuel and preparation method thereof

Info

Publication number: CN110540878A
Application number: CN201910889892.8A
Authority: CN
Inventors: 王胜杰
Original assignee: Shenzhen Luchi Technology Co Ltd
Current assignee: Huo Guiju
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2019-12-06

Abstract

the invention discloses a methanol fuel, which relates to the technical field of fuel preparation, and comprises 60-85% of methanol, 1-3% of compound additive, 10-20% of low-temperature cold start improving component and 4-20% of distillation range improving component by volume fraction; the invention also provides a preparation method of the methanol fuel, which comprises the following steps: (1) adding the compound additive into methanol, stirring uniformly at normal temperature, and standing for 30-35mins to obtain a methanol solution; (2) and (3) uniformly mixing the low-temperature cold start component and the distillation range improving component, adding the mixture into the methanol solution obtained in the step (S100), uniformly stirring at normal temperature, and standing for 30-35mins to obtain the transparent, colorless or light yellow methanol fuel. The invention realizes a methanol fuel without adding gasoline, the other 15 indexes of the product except the oxygen content and the methanol content reach the GB179390-2016 motor gasoline standard, and the methanol fuel can be directly used to replace gasoline.

Description

methanol fuel and preparation method thereof

Technical Field

the invention relates to the field of biofuel, in particular to a methanol fuel and a preparation method thereof.

background

The methanol is used as a vehicle alternative fuel, has the characteristics of low carbon, high oxygen content and high octane number, is beneficial to full combustion, and can effectively improve the power of an engine. The development and application of methanol automobiles in China begin at the end of the last 70 th century, and after continuous exploration practice for more than 40 years, automobiles and engine manufacturing enterprises such as Jili automobiles, Shanxi heavy automobiles, Yutong automobiles, Yiqijing automobiles and the like have a methanol automobile proprietary technology, solve the key technical problems of corrosivity, cold start, swelling property and the like of methanol fuel, and have the methanol automobile autonomous development capability. Since 2012, the ministry of industry and informatization and relevant departments develop methanol automobile pilot plant work in Shanxi, Shanghai, Shanxi, Guizhou and Gansu 5 province cities, further scientifically and systematically verifies the properties of the methanol automobile such as applicability, reliability, economy, safety, environmental protection and the like which are of social concern, and lays an important foundation for popularization and application of the methanol automobile.

china has the characteristic of rich coal, oil and gas resources, the energy structure mainly takes coal as the main material, the external dependence of crude oil and natural gas resources is high, the external dependence of crude oil reaches 70% in 2018, and the external dependence of natural gas reaches 43%. While more than 40% of coal resources in China are high-sulfur coal, the high-sulfur low-quality coal is not suitable for being directly used as power generation or industrial fuel, but can be used for producing methanol, the coal-based methanol ratio in China is about 75%, and other raw materials such as coke oven gas, coal bed gas and the like can also be used for producing methanol. The domestic methanol productivity in 2017 is 8351 ten thousand tons, the yield is 6147 ten thousand tons, the operating rate is about 74 percent, and the state of excess productivity is achieved. The regional development of the methanol automobile is promoted by combining the intrinsic characteristics of resources in China and the current development situation of the methanol automobile, the regional development of the methanol automobile is in line with the national conditions of China, the advantages of coal resources in China are fully exerted, the transformation and the upgrade of the traditional industry are promoted, the green cycle development is promoted, the diversification of energy is realized, and the national energy safety is guaranteed.

methanol is used as fuel, compared with gasoline, the methanol gasoline has high combustion heat efficiency, low product cost and remarkably reduced emissions of HC/CO and the like. But also has the defects of difficult low-temperature cold start, low heat value, corrosiveness to metal and rubber plastic materials and the like.

In addition, methanol and gasoline can produce azeotropes, which tend to form vapor lock at high temperatures. In addition, the mutual solubility problem of methanol and gasoline is also a main technical difficulty for popularization and application. For the application problem of methanol fuel, the solution is mostly developed around methanol gasoline with different proportions.

Therefore, those skilled in the art have made efforts to develop a methanol fuel which is highly efficient in combustion heat, has a low product cost, can overcome the difficulty of cold start at low temperature, and does not require gasoline.

Disclosure of Invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a methanol fuel with high combustion heat efficiency and low product cost, which can overcome the difficulties of low-temperature cold start, does not need to add gasoline, and overcomes the defects of low calorific value and corrosivity to metal and pixel materials.

To achieve the above object, the present invention provides a methanol fuel comprising, in volume fraction:

60-85% of methanol, 1-3% of compound additive, 10-20% of low-temperature cold start improving component and 4-20% of distillation range improving component;

wherein the compound additive comprises a cosolvent, a corrosion inhibitor and a dissolution-assisting stabilizer; the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol; the corrosion inhibitor is a mixture consisting of benzotriazole and sodium dodecyl benzene sulfonate with the mass ratio of 0.5-2; the solubilizing stabilizer is fatty acid amine ester, and the fatty acid amine ester is obtained from a product of biodiesel prepared from cottonseed oil;

wherein the volume ratio of the cosolvent to the corrosion inhibitor is 45-55%, and the concentration of the corrosion inhibitor is 0.01-0.03 g/ml;

the low-temperature cold start improving component comprises any one or any combination of petroleum ether, naphtha and n-heptane;

the distillation range improving component comprises any one or any combination of petroleum ether, 120# solvent or 260# solvent.

the invention also provides a preparation method of the solubilizing stabilizer, which comprises the following steps:

s100, preparing a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst;

s200, preparing fatty acid methyl ester;

S300, preparing a solubilizing stabilizer.

the invention also provides a preparation method of the compound additive, which comprises the following steps:

adding fatty acid amine ester into the isomeric alcohol, uniformly mixing, adding the corrosion inhibitor, uniformly stirring at normal temperature, and standing for 30-35mins to obtain the compound additive.

The invention also provides a preparation method of the methanol fuel, which comprises the following steps:

s100, adding the compound additive into methanol, stirring uniformly at normal temperature, and standing for 30-35mins to obtain a methanol solution;

and S200, uniformly mixing the low-temperature cold start component and the distillation range improving component, adding the mixture into the methanol solution obtained in the step S100, uniformly stirring at normal temperature, and standing for 30-35mins to obtain the transparent, colorless or light yellow methanol fuel.

compared with the prior art, the invention has the following technical advantages:

1) the methanol fuel disclosed by the invention does not contain strong carcinogenic substances such as benzene and xylene in raw materials, and the main raw materials are easy to obtain and low in cost;

2) The invention realizes a methanol fuel without adding gasoline, the other 15 indexes of the product except the oxygen content and the methanol content reach the GB179390-2016 motor gasoline standard, and the methanol fuel can be directly used to replace gasoline.

3) the product except the indexes of oxygen content and methanol content, the other 15 indexes all reach the GB179390-2016 automobile gasoline standard, and can be directly used to replace gasoline;

4) the methanol fuel can be mutually dissolved with gasoline in any proportion;

5) the road economic test result of the methanol fuel shows that the energy consumption per hundred kilometers is reduced compared with that of the 92# gasoline.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

drawings

Fig. 1 is a flow chart of a method for preparing methanol fuel according to a preferred embodiment of the present invention.

Detailed Description

the technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.

the invention discloses a methanol fuel, which comprises the following components in percentage by volume:

the distillation range improving component comprises any one or any combination of petroleum ether, 120# solvent or 260# solvent;

among them, petroleum ether (No. 30-60, No. 60-90 in winter and autumn) is preferred.

the invention discloses a preparation method of a solubilizing stabilizer, which comprises the following steps:

s100, preparing a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst;

s200, preparing fatty acid methyl ester;

s300, preparing a solubilizing stabilizer.

In a preferred embodiment, step S100 further includes:

s101, mixing a Ce (NO3)3 solution and a ZrO (NO3)2 solution according to the proportion that the molar ratio of each 100ml of the mixed solution is 0.5-2, then adding 45-50 g of pseudo-boehmite into the mixed solution, uniformly mixing, and then standing for 90-120 mins, wherein in the later embodiment, the mixed solution of 100ml of the Ce (NO3)3 solution and ZrO (NO3)2 solution is taken as an example for illustration, wherein the concentration of the Ce (NO3)3 solution and the ZrO (NO3)2 solution is 0.15-0.25 g/ml;

s102, drying the solution obtained in the step S101, and continuously calcining the obtained product at 600-650 ℃ for 4-6h to obtain a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst;

s103, grinding the solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst in a ball mill pot by using zirconium balls for 3.5-4.5 hours for later use.

in a preferred embodiment, step S200 further includes:

s201, mixing refined cottonseed oil and methanol according to a molar ratio of 1: 6-8, adding a ground solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst, and reacting at 60-80 ℃ for 60-80 mins to obtain a mixed solution;

S202, extracting the upper yellow transparent solution of the mixed solution obtained in the step S201 to obtain biodiesel, wherein the biodiesel is a mixture of fatty acid methyl ester and methanol;

S203, distilling, washing and drying the biodiesel extracted in the step S202 to obtain yellow and transparent fatty acid methyl ester.

in a preferred embodiment, step S300 further includes:

adding the fatty acid methyl ester prepared in the step S200 into a 200# solvent, adding the fatty acid methyl ester and triethanolamine according to the weight ratio of 0.5-1 to perform hydrolysis and saponification reactions, wherein the reaction temperature is 35-40 ℃, and the reaction time is 30-35 mins; and heating and evaporating the obtained solution after the reaction is finished to obtain fatty acid amine ester, wherein the obtained fatty acid amine ester is used as the solubilizing stabilizer.

the invention also discloses a preparation method of the compound additive, which comprises the following steps:

in a preferred embodiment, the volume ratio of the fatty acid amine ester to the corrosion inhibitor is 45-55%.

fig. 1 shows a flow chart of a method for preparing methanol fuel according to a preferred embodiment of the present invention, which comprises:

In a preferred embodiment, the methanol-based fuel comprises 60-85% of methanol, 1-3% of compound additive, 10-20% of low-temperature cold start improving component and 4-20% of distillation range improving component by volume fraction.

In a preferred embodiment, the compound additive comprises a cosolvent, a corrosion inhibitor and a cosolvent stabilizer; wherein the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol with the volume ratio of 1: 1; the corrosion inhibitor is a mixture of benzotriazole and sodium dodecyl benzene sulfonate with the weight ratio of 1: 1; the solubilizing stabilizer is fatty acid amine ester and is obtained from a product of preparing biodiesel from cottonseed oil;

wherein the volume of the cosolvent and the corrosion inhibitor accounts for 45-55%, and the concentration of the corrosion inhibitor is 0.01-0.03 g/ml;

The low-temperature cold start improving component comprises one or more of petroleum ether, naphtha and n-heptane;

The distillation range improving component comprises one or more of petroleum ether, 120# solvent or 260# solvent;

the following examples are provided to specifically describe embodiments of the present invention.

example 1

A methanol fuel, comprising, in volume fractions:

60% of methanol, 1% of compound additive, 10% of low-temperature cold start improving component and 4% of distillation range improving component;

wherein the compound additive comprises a cosolvent, a corrosion inhibitor and a dissolution-assisting stabilizer; the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol; the corrosion inhibitor is a mixture of benzotriazole and sodium dodecyl benzene sulfonate with the mass ratio of 0.5; the solubilizing stabilizer is fatty acid amine ester, and the fatty acid amine ester is obtained from a product of biodiesel prepared from cottonseed oil;

Wherein the volume of the cosolvent and the corrosion inhibitor accounts for 45%, and the density of the corrosion inhibitor is 0.01 g/ml;

the low temperature cold start improving component comprises naphtha and n-heptane;

The distillation range improving component comprises petroleum ether and 260# solvent;

The preparation method of the corresponding cosolvent stabilizer comprises the following steps:

Preparation of solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst:

Mixing a Ce (NO3)3 solution and a ZrO (NO3)2 solution according to the molar ratio of 0.5, adding 45g of pseudo-boehmite into the mixed solution, uniformly mixing, and standing for 90 mins; drying the solution obtained in the step S101, and continuously calcining the obtained product at 600 ℃ for 4 hours to obtain a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst; grinding a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst for 3.5 hours in a ball milling pot by using zirconium balls for later use;

preparing fatty acid methyl ester:

mixing refined cottonseed oil and methanol according to the molar ratio of 1: 6, adding a ground solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst, and reacting at 60 ℃ for 60mins to obtain a mixed solution;

extracting the upper layer yellow transparent solution of the mixed solution obtained in the step S201 to obtain biodiesel, wherein the biodiesel is a mixture of fatty acid methyl ester and methanol;

distilling, washing and drying the biodiesel extracted in the step S202 to obtain yellow transparent fatty acid methyl ester;

Preparing a solubilizing stabilizer:

adding the prepared fatty acid methyl ester into a 200# solvent, adding the fatty acid methyl ester and triethanolamine according to the weight ratio of 0.5 to perform hydrolysis and saponification reactions, wherein the reaction temperature is 35 ℃, and the reaction time is 30 mins; and heating and evaporating the obtained solution after the reaction is finished to obtain fatty acid amine ester, wherein the obtained fatty acid amine ester is used as the solubilizing stabilizer.

the preparation method of the corresponding compound additive comprises the following steps:

adding fatty acid amine ester into isomeric alcohol, uniformly mixing, adding a corrosion inhibitor, uniformly stirring at normal temperature, and standing for 30mins to obtain the compound additive, wherein the volume ratio of the fatty acid amine ester to the corrosion inhibitor is 45%.

The preparation method of the methanol fuel of a preferred embodiment comprises the following steps:

s100, adding the compound additive into methanol, stirring uniformly at normal temperature, and standing for 30mins to obtain a methanol solution;

and S200, uniformly mixing the low-temperature cold start component and the distillation range improving component, adding the mixture into the methanol solution obtained in the step S100, uniformly stirring at normal temperature, and standing for 30mins to obtain the transparent, colorless or light yellow methanol fuel.

In a preferred embodiment, the composition comprises 60% of methanol, 1% of compound additive, 10% of low-temperature cold start improving component and 4% of distillation range improving component by volume fraction.

the low temperature cold start improving components include naphtha and n-heptane;

Example 2

A methanol fuel, comprising, in volume fractions:

75% of methanol, 2% of compound additive, 15% of low-temperature cold start improving component and 10% of distillation range improving component;

Wherein the compound additive comprises a cosolvent, a corrosion inhibitor and a dissolution-assisting stabilizer; the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol; the corrosion inhibitor is a mixture consisting of benzotriazole and sodium dodecyl benzene sulfonate with the mass ratio of 1; the solubilizing stabilizer is fatty acid amine ester, and the fatty acid amine ester is obtained from a product of biodiesel prepared from cottonseed oil;

wherein the volume of the cosolvent and the volume of the corrosion inhibitor account for 50%, and the density of the corrosion inhibitor is 0.02 g/ml;

The low temperature cold start improving component is n-heptane;

the distillation range improving component is 260# solvent;

preparation of solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst:

mixing a Ce (NO3)3 solution and a ZrO (NO3)2 solution according to the molar ratio of 1, adding 48g of pseudo-boehmite into the mixed solution, uniformly mixing, and standing for 100 mins; drying the solution obtained in the step S101, and continuously calcining the obtained product at the temperature of 620 ℃ for 5 hours to obtain a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst; grinding a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst for 4 hours in a ball-milling pot by using zirconium balls for later use;

preparing fatty acid methyl ester:

mixing refined cottonseed oil and methanol according to the molar ratio of 1: 7, adding a ground solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst, and reacting at 70 ℃ for 70mins to obtain a mixed solution;

Preparing a solubilizing stabilizer:

Adding the prepared fatty acid methyl ester into a 200# solvent, adding the fatty acid methyl ester and triethanolamine according to the weight ratio of 1 to perform hydrolysis and saponification reactions, wherein the reaction temperature is 37 ℃, and the reaction time is 33 mins; and heating and evaporating the obtained solution after the reaction is finished to obtain fatty acid amine ester, wherein the obtained fatty acid amine ester is used as the solubilizing stabilizer.

Adding fatty acid amine ester into isomeric alcohol, uniformly mixing, adding a corrosion inhibitor, uniformly stirring at normal temperature, and standing for 33mins to obtain the compound additive, wherein the volume ratio of the fatty acid amine ester to the corrosion inhibitor is 50%.

S100, adding the compound additive into methanol, stirring uniformly at normal temperature, and standing for 33mins to obtain a methanol solution;

and S200, uniformly mixing the low-temperature cold start component and the distillation range improving component, adding the mixture into the methanol solution obtained in the step S100, uniformly stirring at normal temperature, and standing for 33mins to obtain the transparent, colorless or light yellow methanol fuel.

in a preferred embodiment, the composition comprises 70% of methanol, 2% of compound additive, 15% of low-temperature cold start improving component and 10% of distillation range improving component by volume fraction.

wherein the volume of the cosolvent and the volume of the corrosion inhibitor account for 50 percent, and the density of the corrosion inhibitor is 0.02 g/ml;

The low temperature cold start improving component is n-heptane;

The distillation range improving component is 260# solvent;

example 3

a methanol fuel, comprising, in volume fractions:

75% of methanol, 2% of compound additive, 15% of low-temperature cold start improving component and 15% of distillation range improving component;

the low temperature cold start improving component is n-heptane;

The distillation range improving component is 260# solvent;

Preparation of solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst:

Preparing fatty acid methyl ester:

Preparing a solubilizing stabilizer:

in a preferred embodiment, the composition comprises 70% of methanol, 2% of compound additive, 15% of low-temperature cold start improving component and 15% of distillation range improving component by volume fraction.

the low temperature cold start improving component is n-heptane;

the distillation range improving component is 260# solvent;

example 4

a methanol fuel, comprising, in volume fractions:

80% of methanol, 3% of compound additive, 20% of low-temperature cold start improving component and 20% of distillation range improving component;

wherein the compound additive comprises a cosolvent, a corrosion inhibitor and a dissolution-assisting stabilizer; the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol; the corrosion inhibitor is a mixture consisting of benzotriazole and sodium dodecyl benzene sulfonate with the mass ratio of 2; the solubilizing stabilizer is fatty acid amine ester, and the fatty acid amine ester is obtained from a product of biodiesel prepared from cottonseed oil;

wherein the volume of the cosolvent and the volume of the corrosion inhibitor account for 55%, and the density of the corrosion inhibitor is 0.03 g/ml;

the low-temperature cold start improving component comprises petroleum ether and naphtha;

the distillation range improving component comprises petroleum ether and a 120# solvent;

preparation of solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst:

mixing a Ce (NO3)3 solution and a ZrO (NO3)2 solution according to the molar ratio of 1, adding 50g of pseudo-boehmite into the mixed solution, uniformly mixing, and standing for 120 mins; drying the solution obtained in the step S101, and continuously calcining the obtained product at 650 ℃ for 6 hours to obtain a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst; grinding a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst for 4.5 hours in a ball milling pot by using zirconium balls for later use;

preparing fatty acid methyl ester:

mixing refined cottonseed oil and methanol according to the molar ratio of 1: 8, adding a ground solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst, and reacting at 80 ℃ for 80mins to obtain a mixed solution;

Preparing a solubilizing stabilizer:

Adding the prepared fatty acid methyl ester into a 200# solvent, adding the fatty acid methyl ester and triethanolamine according to the weight ratio of 2 to perform hydrolysis and saponification reactions, wherein the reaction temperature is 40 ℃, and the reaction time is 35 mins; and heating and evaporating the obtained solution after the reaction is finished to obtain fatty acid amine ester, wherein the obtained fatty acid amine ester is used as the solubilizing stabilizer.

adding fatty acid amine ester into isomeric alcohol, uniformly mixing, adding a corrosion inhibitor, uniformly stirring at normal temperature, and standing for 35mins to obtain the compound additive, wherein the volume ratio of the fatty acid amine ester to the corrosion inhibitor is 55%.

s100, adding the compound additive into methanol, stirring uniformly at normal temperature, and standing for 35mins to obtain a methanol solution;

and S200, uniformly mixing the low-temperature cold start component and the distillation range improving component, adding the mixture into the methanol solution obtained in the step S100, uniformly stirring at normal temperature, and standing for 35mins to obtain the transparent, colorless or light yellow methanol fuel.

in a preferred embodiment, the composition comprises 80% methanol, 3% compound additive, 20% low temperature cold start improving component and 20% distillation range improving component by volume fraction.

wherein the volume of the cosolvent and the corrosion inhibitor accounts for 55%, and the density of the corrosion inhibitor is 0.03 g/ml;

The distillation range improving component comprises petroleum ether and a 120# solvent.

the following are experimental verifications made with the methanol fuel of the present invention:

Wherein, Table 1 is the results of tests according to GB/T17930-2016 gasoline for motor vehicles, and Table 2 is the comparison table of the results of road economy tests carried out by great wall H3. The engine model of the vehicle type used was 4G63S4M, and the displacement was 2.0L.

TABLE 1 comparison table of the results of the tests according to GB/T17930-2016 gasoline for motor vehicles

From the comparison of the quality indexes and the detection results in the table that the methanol fuel provided by the invention is detected according to the GB/T17930-2016 (gasoline for vehicles) standard, 15 indexes in 17 indexes all reach the qualified standard, and the shown data fully indicate that the methanol fuel provided by the invention is qualified in performance and can be used for gasoline engines.

TABLE 2 comparison table of road economy test results

Item	92# gasoline	methanol fuel (M85)	rate of change
				mileage (Km)	257	257
Travel time (h)	3.01	2.98
				Average vehicle speed (Km/h)	85.3	86.1
Oil consumption per hundred kilometers (L/100Km)	9.4	12.68	34.89％
				hundred kilometers energy consumption (MJ)	303.6	231.48	-23.75％

note: the hundred-kilometer energy consumption is the total heat value of fuel consumed by a vehicle running for 100 kilometers, and the calculation formula is as follows: one hundred kilometers energy consumption is one hundred kilometers oil consumption and fuel specific gravity and fuel calorific value

From the comparison table of the road economy test results in the table above, it is seen that when the 92# gasoline and the methanol fuel of the present invention are used as fuels respectively, the 92# gasoline has a fuel consumption per kilometer of 9.4L, the methanol fuel has a fuel consumption per kilometer of 12.68L, the 92# gasoline has a power consumption per kilometer of 303.6MJ, and the methanol fuel has a power consumption per kilometer of 231.48MJ, compared with that, although the fuel consumption per kilometer of the methanol fuel is increased by 34.89%, the power consumption per kilometer of the methanol fuel is decreased by 23.75%, and the test results show that the M85 methanol fuel can be used as a fuel instead of gasoline.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the above teachings without departing from the spirit and scope of the present invention. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. a methanol fuel, comprising, in volume fractions:

Wherein the compound additive comprises a cosolvent, a corrosion inhibitor and a dissolution-assisting stabilizer; the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol; the corrosion inhibitor is a mixture of benzotriazole and sodium dodecyl benzene sulfonate with the mass ratio of 0.5-2: 1; the solubilizing stabilizer is fatty acid amine ester, and the fatty acid amine ester is obtained from a product of biodiesel prepared from cottonseed oil;

wherein the volume ratio of the cosolvent to the corrosion inhibitor is 45-55%, and the density of the corrosion inhibitor is 0.01-0.03 g/ml;

2. the methanol fuel of claim 1, wherein preferably the hydrotropic stabilizer is prepared by:

s100, preparing a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst;

S200, preparing fatty acid methyl ester;

s300, preparing a solubilizing stabilizer.

3. the methanol fuel of claim 2, wherein the step S100 further comprises:

s101, mixing a Ce (NO3)3 solution and a ZrO (NO3)2 solution according to the molar ratio of 0.5-2 in each 100ml, adding 45-50 g of pseudo-boehmite, uniformly mixing, and standing for 90-120 mins, wherein the concentrations of the Ce (NO3)3 solution and the ZrO (NO3)2 solution are 0.15-0.25 g/ml;

4. the methanol fuel of claim 2, wherein the step S200 further comprises:

5. the methanol fuel of claim 2, wherein the step S300 further comprises:

6. The methanol fuel of claim 1, wherein the formulated additive is prepared by:

7. The methanol fuel of claim 6, wherein the volume ratio of the fatty acid amine ester to the corrosion inhibitor is 45-55%.

8. a method of producing a methanol fuel, the method comprising:

9. the method of claim 8, wherein the methanol is 60-85%, the compound additive is 1-3%, the low temperature cold start improving component is 10-20%, and the distillation range improving component is 4-20% by volume fraction.

10. the method of claim 8, wherein the compounding additive comprises a co-solvent, a corrosion inhibitor, and a hydrotropic stabilizer; wherein the cosolvent comprises isomeric alcohol consisting of isopropanol and tert-butanol in a volume ratio of 1: 1; the corrosion inhibitor is a mixture of benzotriazole and sodium dodecyl benzene sulfonate with the weight ratio of 1: 1; the solubilizing stabilizer is fatty acid amine ester and is obtained from a product of preparing biodiesel from cottonseed oil;

The distillation range improving component comprises one or more of petroleum ether, 120# solvent or 260# solvent.

11. a method of preparing a hydrotropic stabilizer, the method comprising the steps of:

s100, preparing a solid acid 2CeO2-ZrO 2/gamma-Al 2O3 catalyst;

S200, preparing fatty acid methyl ester;

S300, preparing a solubilizing stabilizer.

12. The manufacturing method according to claim 11, wherein the step S100 further includes:

13. The manufacturing method according to claim 11, wherein the step S200 further includes:

14. the manufacturing method according to claim 11, wherein the step S300 further includes: