CN116120970A - Methanol fuel for internal combustion engine and preparation method thereof - Google Patents

Abstract

The invention provides a methanol fuel for an internal combustion engine and a preparation method thereof, belonging to the technical field of internal combustion engine fuels, wherein the methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 40-60 parts of methanol, 5-15 parts of ethylene glycol tertiary butyl ether, 1-3 parts of mixed butanol, 1-10 parts of dimethyl carbonate, 1-10 parts of ethylene glycol monobutyl ether, 5-15 parts of tetramethylbenzene, 13-23 parts of naphtha and auxiliary agents; the methanol fuel prepared in the invention can reduce carbon emission by more than 70% after being used in an internal combustion engine, and can clean carbon deposition in the internal combustion engine, and the purity of the methanol fuel is higher, wherein the water content is reduced to below 0.01%, so that the water deposition in an oil tank can be cleaned after the use of the existing internal combustion engine.

Description

Methanol fuel for internal combustion engine and preparation method thereof

Technical Field

The invention belongs to the technical field of fuel for internal combustion engines, and particularly relates to a methanol fuel for an internal combustion engine and a preparation method thereof.

Background

Methanol (methyl alcohol) is also called as hydroxy methane, is an organic compound, is saturated monohydric alcohol with the simplest structure, and has the chemical formula of CH3OH/CH4O, wherein CH3OH is a structural formula, can stand out the hydroxy group of Methanol, has the CAS number of 67-56-1, has the molecular weight of 32.04 and the boiling point of 64.7 ℃. It is also called "xylitol" or "lignan" because it was first found in retorted wood. Is soluble in water, miscible in alcohols, diethyl ether and other organic solvents, and can be used as extractant for organic substances, denaturant for alcohols and the like.

The coal can be used for preparing methanol, the lignite can be used for preparing methanol, and the carbon dioxide and the hydrogen can be used for synthesizing the methanol. The future combustion energy source is mainly methanol instead of petroleum, because petroleum is a non-renewable resource, and the byproduct of petroleum is widely applied at present, and the phenomenon that the fuel is simply used for mass combustion is also wasted is the phenomenon that methanol is used as a main raw material to replace petroleum for combustion is a natural condition. Thus, we provide a methanol fuel for an internal combustion engine to solve the above problems.

Disclosure of Invention

The invention aims to provide a methanol fuel for an internal combustion engine and a preparation method thereof, and aims to solve the problems that petroleum in the prior art is short of fuel material and cannot be regenerated.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 40-60 parts of methanol, 5-15 parts of ethylene glycol tertiary butyl ether, 1-3 parts of mixed butanol, 1-10 parts of dimethyl carbonate, 1-10 parts of ethylene glycol monobutyl ether, 5-15 parts of tetramethylbenzene, 13-23 parts of naphtha and an auxiliary agent.

As a preferable scheme of the invention, the invention comprises the following raw materials in parts by weight: 42-58 parts of methanol, 7-13 parts of ethylene glycol tertiary butyl ether, 1.5-2.5 parts of mixed butanol, 2-8 parts of dimethyl carbonate, 2-8 parts of ethylene glycol monobutyl ether, 7-13 parts of tetramethylbenzene, 14-22 parts of naphtha and an auxiliary agent.

As a preferable scheme of the invention, the invention comprises the following raw materials in parts by weight: 45-55 parts of methanol, 8-13 parts of glycol tert-butyl ether, 1.8-2.3 parts of mixed butanol, 3-6 parts of dimethyl carbonate, 4-7 parts of glycol monobutyl ether, 8-12 parts of tetramethylbenzene, 16-21 parts of naphtha and an auxiliary agent.

As a preferable scheme of the invention, the invention comprises the following raw materials in parts by weight: 50 parts of methanol, 10 parts of ethylene glycol tertiary butyl ether, 2 parts of mixed butanol, 5 parts of dimethyl carbonate, 5 parts of ethylene glycol monobutyl ether, 10 parts of tetramethylene, 18 parts of naphtha and an auxiliary agent.

As a preferred embodiment of the present invention, the auxiliary agent is one or more of a modifier, a stabilizer and a cosolvent.

A preparation method of methanol fuel for an internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, and performing pressurized catalysis to synthesize a main compound;

s12, removing crude methanol in the compound product, and purifying to obtain industrial methanol;

s13, placing industrial methanol into a distillation tower for rectification to obtain pure methanol for later use;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, and then sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, and stirring and mixing to obtain a mixture A for later use;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, adding naphtha, mixing, stirring, and standing for 0.5h to obtain the methanol fuel for the internal combustion engine.

As a preferable scheme of the invention, the temperature of the top of the distillation column in the step S13 is 64-65 ℃.

As a preferable scheme of the invention, sodium iodate is added in the rectification in the distillation tower in the step S13.

As a preferable scheme of the invention, the time interval of adding the ethylene glycol tertiary butyl ether, the mixed butanol, the dimethyl carbonate, the ethylene glycol monobutyl ether and the tetramethylene in the step S2 is 5min.

As a preferable scheme of the invention, in the step S3, the mixture A and the auxiliary agent are stirred for 0.5-1h in a stirring tank, and the stirring speed of the stirring tank is 300r/min; the mixture B and naphtha are stirred and dispersed for 15-25min at high speed in a fuel stirring tank of an internal combustion engine, and the stirring speed of the stirring tank is 500r/min.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the carbon emission of the prepared methanol fuel after being used for the internal combustion engine can be reduced by more than 70%, and meanwhile, carbon deposition in the internal combustion engine can be cleaned, and the water content of the methanol fuel is reduced to below 0.01% due to the high purity of the methanol fuel, so that the accumulated water in an oil tank can be cleaned after the existing internal combustion engine is used.

2. In the scheme, methanol, ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether, tetramethylene and naphtha are mixed, so that alcohols are denatured to form denatured alcohols, the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, the power can be increased, and the service life of the internal combustion engine can be prolonged after the conventional internal combustion engine is used.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a flow chart of a method for preparing methanol fuel for an internal combustion engine.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1, the present invention provides the following technical solutions:

the methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 40 parts of methanol, 5 parts of ethylene glycol tertiary butyl ether, 1 part of mixed butanol, 1 part of dimethyl carbonate, 1 part of ethylene glycol monobutyl ether, 5 parts of tetramethylene, 13 parts of naphtha and an auxiliary agent.

Referring specifically to fig. 1, the auxiliary agent is one or more of a modifier, a stabilizer and a cosolvent.

In this embodiment: among the auxiliary agents, the modifier is a mixed modifier consisting of ethanol, cetane number improver, flash point improver and the like, so that the methanol can change in the mixing process; the stabilizer is a mixture composed of toluene, fatty amine, non-silicon type anti-emulsifying agent and camphoressence, so that a plurality of mixtures in the mixture A can be more stable and do not easily generate severe reaction when being stirred and mixed; the cosolvent is one or more of tetrahydrofuran, ethyl acetate, butanol, oleic acid, n-decyl alcohol and n-octyl alcohol, and is prepared by mixing and compounding, so that the mixture B can be better fused together when being mixed with naphtha, and methanol fuel is produced.

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 15min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

Specifically, ethylene glycol tertiary butyl ether, also called 2-tertiary butoxyethanol, is an organic compound with a chemical formula of C6H14O2, has functions of wetting, plasticizing and the like, can be used for organically synthesizing an intermediate, and can be better mixed with other volumes when being added into methanol;

butanol is slightly dissolved in water and can be mixed with ethanol and diethyl ether, so that the prepared fuel can be fully used;

dimethyl carbonate has the properties of high oxygen content (the oxygen content in molecules is up to 53%), excellent octane value improving effect, no phase separation, low toxicity, quick biodegradability and the like, so that the DMC (methyl tert-butyl ether) used when the gasoline reaches the same oxygen content is 4.5 times less than methyl tert-butyl ether (MTBE), the total emission amount of hydrocarbon, carbon monoxide and formaldehyde in automobile exhaust is reduced, and the defects that a common gasoline additive is easy to dissolve in water and pollute an underground water source are overcome, so that the prepared methanol fuel has the effects of reducing the emission of pollutants and having higher purity;

ethylene glycol monobutyl ether is an organic compound, has a chemical formula of C6H14O2, and is provided with organic solvents and mineral oil which are dissolved in water, acetone, benzene, diethyl ether, methanol, carbon tetrachloride and the like, so that the solvents such as methanol, naphtha and the like can be mixed more stably when being mixed;

the tetramethylbenzene, 1,2,4, 5-tetramethylbenzene, also called durene, is an organic compound with a chemical formula of C10H14, is mainly used for organic synthesis and can play a plasticizing effect.

In a specific implementation of this embodiment: the prepared methanol fuel is used for the internal combustion engine, carbon emission can be reduced by more than 70%, carbon deposition in the internal combustion engine can be cleaned, and the purity of the methanol fuel is higher, wherein the water content is reduced to be below 0.01%, so that the water deposition in an oil tank can be cleaned after the traditional internal combustion engine is used.

Example 2

The methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 42 parts of methanol, 7 parts of ethylene glycol tertiary butyl ether, 1.5 parts of mixed butanol, 2 parts of dimethyl carbonate, 2 parts of ethylene glycol monobutyl ether, 7 parts of tetramethylene, 14 parts of naphtha and an auxiliary agent.

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 15min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

The preparation method of example 2 is the same as that of example 1, except that the parts by weight of the raw materials are different, and the description thereof will be omitted.

Example 3

The methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 45 parts of methanol, 8 parts of ethylene glycol tertiary butyl ether, 1.8 parts of mixed butanol, 3 parts of dimethyl carbonate, 4 parts of ethylene glycol monobutyl ether, 8 parts of tetramethylene, 16 parts of naphtha and an auxiliary agent

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into a stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 18min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

The preparation method of example 3 is the same as that of example 1, except that the parts by weight of the raw materials are different, and the description thereof will be omitted.

Example 4

The methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 50 parts of methanol, 10 parts of ethylene glycol tertiary butyl ether, 2 parts of mixed butanol, 5 parts of dimethyl carbonate, 5 parts of ethylene glycol monobutyl ether, 10 parts of tetramethylene, 18 parts of naphtha and an auxiliary agent.

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 20min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

The preparation method of example 4 is the same as that of example 1, except that the parts by weight of the raw materials are different, and the description thereof will be omitted.

Example 5

The methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 55 parts of methanol, 13 parts of ethylene glycol tertiary butyl ether, 2.3 parts of mixed butanol, 6 parts of dimethyl carbonate, 7 parts of ethylene glycol monobutyl ether, 12 parts of tetramethylene, 21 parts of naphtha and an auxiliary agent.

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 23min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

The preparation method of example 5 is the same as that of example 1, except that the parts by weight of the raw materials are different, and the description thereof will be omitted.

Example 6

The methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 58 parts of methanol, 13 parts of ethylene glycol tertiary butyl ether, 2.5 parts of mixed butanol, 8 parts of dimethyl carbonate, 8 parts of ethylene glycol monobutyl ether, 13 parts of tetramethylene, 22 parts of naphtha and an auxiliary agent.

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 25min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

The preparation method of example 6 is the same as that of example 1, except that the parts by weight of the raw materials are different, and the description thereof will be omitted.

Example 7

The methanol fuel for the internal combustion engine comprises the following raw materials in parts by weight: 60 parts of methanol, 15 parts of ethylene glycol tertiary butyl ether, 3 parts of mixed butanol, 10 parts of dimethyl carbonate, 10 parts of ethylene glycol monobutyl ether, 15 parts of tetramethylene, 23 parts of naphtha and an auxiliary agent.

Specifically, the preparation method of the methanol fuel for the internal combustion engine comprises the following steps:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, performing pressurized catalysis to synthesize a main compound,

wherein, the chemical reaction formula is: 2H2+CO is less than or equal to CH3OH,

after the carbon monoxide and the hydrogen are subjected to high pressure, the compound methanol can be produced, the purity of the obtained methanol is not high, and the crude methanol needs to be removed;

s12, removing crude methanol in the compound product by a pre-distillation method, and performing chemical purification treatment to obtain industrial methanol, wherein the chemical treatment is to destroy impurities which are difficult to separate in the distillation process by using alkali, and adjust the pH value. The pre-distillation method is to remove volatile components such as dimethyl ether, non-volatile ethanol, high-carbon alcohol, water and the like, and the purity of crude oil distillation can reach more than 98%, so that the purity of methanol is effectively improved;

s13, placing industrial methanol into a distillation tower for rectification, reducing the water content of the industrial methanol to below 0.01% by using a distillation method, simultaneously removing acetone after treatment by sodium iodate, rectifying to obtain pure methanol for later use, performing distillation and dehumidification by using conventional pressure, controlling the temperature of the tower top to be 64 ℃ or less than 65 ℃, and filtering to remove insoluble substances;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, wherein the purity of the pure methanol is 99.9%, sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, stirring and mixing to obtain a mixture A, firstly adding the ethylene glycol tertiary butyl ether, stirring and mixing for 5min at the speed of 300r/min, then adding the mixed butanol, and stirring and mixing for 5min at the speed of 300r/min; then adding dimethyl carbonate, adding ethylene glycol monobutyl ether, stirring and mixing for 5min at the speed of 300r/min, adding tetramethylbenzene, and stirring and mixing for 5min at the speed of 300r/min;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, finally adding naphtha, and stirring and mixing for 25min at a speed of 500 r/min; then standing for 30 minutes to finish loading; the method can denature alcohols to form denatured alcohols, so that the defects of the alcohols are removed, the alcohols are fully combusted in the internal combustion engine, and the products are finally fully combusted, so that the power is improved, and the energy conservation and the emission reduction are realized.

The preparation method of example 7 is the same as that of example 1, except that the parts by weight of the raw materials are different, and the description thereof will be omitted.

Performance test the comparative example provides a methanol fuel, and various indexes of the methanol fuels provided in examples 1-7 and comparative example of the invention are subjected to performance test according to national standard GB 16663-1996. The specific parameters and detection methods are shown in table 1. Wherein, in the national standard, the following requirements are: the mechanical impurity is less than 0.02, the condensation point is less than-30 ℃, the total sulfur content is less than 0.010, the 50% distillation temperature is less than 80 ℃, the pH value is 6-8, the separation is stable and not at-20 ℃, the appearance is uniform, transparent liquid is free from malodor, the low heat value is more than 21000KJ/Kg, the density is less than or equal to 0.83g/cm < 3 > at 20 ℃, and the comparison is shown in the table 1:

table 1: detection result table for various indexes of methanol fuel

As can be seen from the table, indexes such as mechanical impurity amount, condensation point, total sulfur content, distillation temperature and the like in the methanol fuel provided by the embodiment of the invention are far lower than national standards, and the heat value is effectively improved, and other standards are in accordance with the national standards, so that the methanol fuel provided by the embodiment of the invention is a methanol fuel with high heat value; the method is used for reducing carbon emission by more than 70% after the internal combustion engine is used, and can clean carbon deposition in the internal combustion engine, and the purity of the methanol fuel is higher, wherein the water content is reduced to be below 0.01%, so that the accumulated water in an oil tank can be cleaned after the existing internal combustion engine is used.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The methanol fuel for the internal combustion engine is characterized by comprising the following raw materials in parts by weight: 40-60 parts of methanol, 5-15 parts of ethylene glycol tertiary butyl ether, 1-3 parts of mixed butanol, 1-10 parts of dimethyl carbonate, 1-10 parts of ethylene glycol monobutyl ether, 5-15 parts of tetramethylbenzene, 13-23 parts of naphtha and an auxiliary agent.

2. The methanol fuel for an internal combustion engine according to claim 1, comprising the following raw materials in parts by weight: 42-58 parts of methanol, 7-13 parts of ethylene glycol tertiary butyl ether, 1.5-2.5 parts of mixed butanol, 2-8 parts of dimethyl carbonate, 2-8 parts of ethylene glycol monobutyl ether, 7-13 parts of tetramethylbenzene, 14-22 parts of naphtha and an auxiliary agent.

3. The methanol fuel for an internal combustion engine according to claim 2, comprising the following raw materials in parts by weight: 45-55 parts of methanol, 8-13 parts of glycol tert-butyl ether, 1.8-2.3 parts of mixed butanol, 3-6 parts of dimethyl carbonate, 4-7 parts of glycol monobutyl ether, 8-12 parts of tetramethylbenzene, 16-21 parts of naphtha and an auxiliary agent.

4. A methanol fuel for an internal combustion engine according to claim 3, comprising the following raw materials in parts by weight: 50 parts of methanol, 10 parts of ethylene glycol tertiary butyl ether, 2 parts of mixed butanol, 5 parts of dimethyl carbonate, 5 parts of ethylene glycol monobutyl ether, 10 parts of tetramethylene, 18 parts of naphtha and an auxiliary agent.

5. The methanol fuel for an internal combustion engine as in claim 4, wherein the auxiliary agent is one or more of a modifier, a stabilizer, and a cosolvent.

6. A method for producing a methanol fuel for an internal combustion engine, based on the methanol fuel for an internal combustion engine according to any one of claims 1 to 5, characterized by comprising the steps of:

s1, preparing methanol,

s11, adding H2 and CO into a closed container, and performing pressurized catalysis to synthesize a main compound;

s12, removing crude methanol in the compound product, and purifying to obtain industrial methanol;

s13, placing industrial methanol into a distillation tower for rectification to obtain pure methanol for later use;

s2, adding the pure methanol prepared in the step S1 into a stirring tank, and then sequentially adding ethylene glycol tertiary butyl ether, mixed butanol, dimethyl carbonate, ethylene glycol monobutyl ether and tetramethylbenzene, and stirring and mixing to obtain a mixture A for later use;

s3, adding an auxiliary agent into the stirring tank, stirring at a high speed to obtain a mixture B, adding naphtha, mixing, stirring, and standing for 0.5h to obtain the methanol fuel for the internal combustion engine.

7. The methanol fuel for an internal combustion engine and the method for producing the same as defined in claim 6, wherein the distillation column top temperature in step S13 is 64-65 ℃.

8. The methanol fuel for an internal combustion engine and the method for producing the same as defined in claim 7 wherein sodium iodate is added at the time of rectifying in the distillation column in step S13.

9. The methanol fuel for an internal combustion engine and the preparation method thereof according to claim 8, wherein the time intervals of adding the tert-butyl glycol ether, the mixed butanol, the dimethyl carbonate, the monobutyl glycol ether and the tetramethylene in the step S2 are all 5min.

10. The methanol fuel for an internal combustion engine and the preparation method thereof according to claim 9, wherein the mixture a and the auxiliary agent in the step S3 are stirred in a stirring tank for 0.5 to 1 hour, and the stirring rate of the stirring tank is 300r/min; the mixture B and naphtha are stirred and dispersed for 15-25min at high speed in a fuel stirring tank of an internal combustion engine, and the stirring speed of the stirring tank is 500r/min.

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