TW202229530A - Methanol additives, preparation method thereof, and modified methanol and use - Google Patents

Abstract

The present invention relates to a methanol additive, comprising, based on the total volume of the methanol additive: 25-55 vol.% power accelerator; 7-25 vol.% methanol calorific agent; 1-15 vol.% corrosion inhibitor; 1-15 vol.% anti-blocking agent; and the balance being a co-solvent. The present invention also relates to modified methanol comprising the methanol additive and a miscibility regulator. The modified methanol has the advantages of not being prone to delamination, sufficient power, less corrosive to metals, low swelling to rubber/plastic elements, and low pollutant concentration. In addition, any internal combustion engine, which uses the modified methanol, can be easily started at low temperatures. In particular, the calorific value of the modified methanol can reach 8,000 kcal/kg or more.

Description

Methanol additive, method for its preparation and modified methanol and use

The present invention relates to the technical field of modified methanol, especially to modified methanol that can be applied to power equipment or boiler equipment.

Petroleum is a non-renewable resource, and its excessive development and use not only causes ecological crisis, but also causes serious pollution to the environment. In order to solve the above problems, the existing technology has proposed to use methanol to replace the fuel required for gasoline and diesel internal combustion engines (or for boiler combustion). .

Methanol raw material is easy to buy, low cost, can be mass-produced, and has a toxicity similar to that of gasoline, which is a potential fuel for ultra-clean combustion and high clean emission. Methanol (CH ₃ OH) is the compound with the simplest structure among the alcohols, and its polar hydroxyl (OH) occupies the highest proportion in the molecular structure. The oxygen content is as high as 50%, the auto-ignition point is 460°C, and the latent heat of vaporization is 1100 MJ/kg , calorific value 4,650 kcal/kg, air-fuel ratio 6.45. Although the calorific value of the air-fuel mixture is slightly lower than that of gasoline, it has the characteristics of fast combustion speed, fast heat release and high thermal efficiency. Therefore, when methanol is used, there is no need to add trihydroxymethyl amyl manganese and tetraethyl lead. , methyl tertiary butyl ether (MTBE) and other highly polluting compounds.

Since the calorific value of gasoline (9,800 MJ/kg) is more than twice that of methanol (4,650 kcal/kg), unmodified methanol can only be added to gasoline and diesel in small amounts. However, the methanol additives or modified methanol currently used to modify methanol generally have the following problems: ①It is easy to delaminate after long-term storage after mixing with gasoline and diesel; ②It is corrosive to metals; ③It will cause rubber/plastic parts to produce Swelling; ④ it cannot be applied to the jet structure of traditional internal combustion engines; ⑤ it is easy to cause air resistance during use; For example, the methanol mixed fuel will produce gelatin at high temperature and cause carbon deposition in the internal combustion engine. The existence of carbon deposition will reduce the efficiency of the internal combustion engine, and eventually lead to the failure of the internal combustion engine and the discharge of a large amount of pollutants.

Therefore, there are still methanol additives in the technical field to improve the problems of mutual solubility, lack of power, water stratification, and corrosion/swelling problems related to methanol, and modified methanol with high calorific value that can be used as a clean fuel.

In order to achieve the above purpose, the present invention adopts the following technical scheme: The present invention first relates to a methanol additive, which, based on the total volume of the methanol additive, comprises: 25-55 vol.% power accelerator; 7-25 vol.% methanol calorific value agent; 1-15 vol.% corrosion inhibitor; 1-15 vol.% anti-clogging agent; and the balance is cosolvent.

The methanol additive of the present invention may comprise: based on the total volume, 25-55 vol.% power accelerator; 7-25 vol.% methanol calorific value agent; 1-15 vol.% corrosion inhibitor; 1-15 vol.% Anti-clogging agent; 10-30 vol.% emulsifier; and balance is cosolvent.

The methanol additive of the present invention may comprise: based on the total volume, 25-55 vol.% power accelerator; 7-25 vol.% methanol calorific value agent; 1-15 vol.% corrosion inhibitor; 1-15 vol.% Anti-clogging agent; 1-10 vol.% modifier; and balance cosolvent.

The methanol additive of the present invention may comprise: based on the total volume, 25-55 vol.% power accelerator; 7-25 vol.% methanol calorific value agent; 1-15 vol.% corrosion inhibitor; 1-15 vol.% Anti-clogging agent; 10-30 vol.% emulsifier; 1-10 vol.% modifier; and the balance is cosolvent.

The present invention further relates to a methanol modified with the methanol additive described herein, comprising the methanol additive of the present invention and methanol.

The methanol additive of the present invention enables the modified methanol to have at least one of the following advantages, and preferably has the following advantages: Ÿ High methanol content; Ÿ Not easy to delaminate: the individual components of the methanol additive have a synergistic effect, which can prevent methanol from mixing The stratification phenomenon occurs when the fuel is stored; Ÿ Power is sufficient: the methanol additive can increase the calorific value of methanol and enhance the power, and the main indicators of the prepared modified methanol can reach (even better) those of commercial gasoline and diesel. ; Ÿ Low corrosiveness to metals; Ÿ Low swelling of rubber/plastic parts; Ÿ Low concentration of pollutants discharged: Methanol additives can help modify methanol to dissolve into methanol-in-oil microdroplet structure, so that when burning The content of harmful emissions CO, NO _x , SO _x is significantly reduced, which is environmentally friendly. It makes the internal combustion engine used easier to start at low temperature, and improves the low temperature performance of methanol mixed fuel, thereby improving the problem of cold start of the internal combustion engine.

The present invention also relates to a method for preparing a methanol additive as described herein, which comprises mixing a kinetic accelerator, a corrosion inhibitor, a methanol calorific value agent, and an anti-clogging agent to form an intermediate mixture under normal temperature and pressure; The solvent is mixed with the intermediate mixture.

A method for preparing a methanol additive as described herein, which may comprise mixing a power accelerator, a corrosion inhibitor, a methanol calorific value agent, an anti-blocking agent, and an emulsifier to form an intermediate mixture at normal temperature and pressure; and then mixing a cosolvent Mix with intermediate mixture.

The method for preparing the methanol additive as described herein may comprise mixing a power accelerator, a corrosion inhibitor, a methanol calorific value agent, and an anti-clogging agent to form an intermediate mixture at normal temperature and pressure; and then mixing a cosolvent and a modifier The agent is mixed with the intermediate mixture.

A method for preparing a methanol additive as described herein, which may comprise mixing a power accelerator, a corrosion inhibitor, a methanol calorific value agent, an anti-blocking agent, and an emulsifier to form an intermediate mixture at normal temperature and pressure; and then mixing a cosolvent and modifier mixed with the intermediate mixture.

The present invention also relates to the use of a methanol additive as described herein, which is used as a fuel for an internal combustion engine or a boiler. Any internal combustion engine or boiler suitable for commercial gasoline and diesel oil is also applicable to the present invention, such as but not limited to: steam, locomotive internal combustion engines of ships, internal combustion engines of ships, or internal combustion engines of generators, etc.

The present invention will be further described in detail below through embodiments. It should be understood that the various embodiments described and illustrated in this specification are non-limiting and non-exhaustive. Accordingly, the present invention is not necessarily limited by the description of the various non-limiting and non-exhaustive embodiments disclosed in this specification. Features and characteristics illustrated and/or described in connection with various embodiments may be combined with features and characteristics of other embodiments. Such modifications and variations are intended to be included within the scope of this specification. Accordingly, the claims may be modified to recite any feature or characteristic that is expressly or inherently described in, or otherwise expressly and inherently supported by, this specification. Furthermore, the applicant reserves the right to amend the claimed scope to affirmatively disclaim features or characteristics that may be present in the prior art. Various embodiments disclosed and described in this specification may comprise, consist of, or consist essentially of the features and characteristics that are described in various ways in this specification.

All numbers expressing amounts, ratios, physical characteristics, etc. used in this specification and the scope of the claims should be understood to be modified by the term "about" in all cases. Accordingly, unless indicated to the contrary, the numerical values set forth in the following specification and claims may vary depending upon the properties sought to be obtained and/or desired by the present invention. At the very least, and without attempting to limit the application of the doctrine of equivalence to the scope of the claimed scope, each numerical parameter should at least be construed in light of the number of significant digits disclosed and by applying ordinary rounding techniques.

Furthermore, any numerical range recited in this specification is intended to include all subranges subsumed within the range with the same numerical precision. For example, the range "1.0 to 10.0" is intended to include all subranges between (and including the minimum value and the maximum value) the minimum value of 1.0 and the maximum value of 10.0, that is, those having a value equal to or greater than 1.0 The minimum value and the maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit stated in this specification is intended to include all lower numerical limits contained therein, and any minimum numerical limit stated in this specification is intended to include all higher numerical limits contained therein. Accordingly, Applicants reserve the right to amend this specification, including the claimed scope, to expressly recite any sub-range subsumed within the scope expressly recited herein. All such ranges are intended to be inherently recited in this specification.

Unless otherwise indicated, any patent, publication, or other disclosure material identified herein is incorporated by reference into this specification in its entirety, but only to the extent that the incorporated material is not Definitions, representations or other disclosures to the extent that the material contradicts. Accordingly, and to the extent necessary, the express disclosure as set forth in this specification supersedes any conflicting material incorporated herein by reference. It is said that it is incorporated by reference into this specification, but any material or part thereof that contradicts existing definitions, representations or other disclosed material stated herein only to the extent that such incorporated material does not conflict with the existing disclosed material degree of integration. Applicants reserve the right to amend this specification to expressly recite any subject matter, or portions thereof, incorporated herein by reference.

As mentioned above, the necessary components of methanol additives to achieve the technical effect include: power accelerator, methanol calorific value agent, corrosion inhibitor, anti-clogging agent and cosolvent; the following is the definition, function, and exemplified compounds of each component , dosage and usage are described as follows: Power booster

Power booster is used to increase the octane number of methanol and has the function of cleaning internal combustion engines. It can fully burn the modified methanol, improve the thermal efficiency of internal combustion engines, enhance power, increase the range of motor vehicles, save fuel, and can replace unleaded gasoline. MTBE used in carcinogens, reducing the formation and emission of toxic gases.

The flash point of methanol is low (11-12°C), which is far from the flash point of diesel fuel (55°C). Stablize. In addition, the cetane number of diesel is required to be between 45 and 49. After methanol is mixed with diesel, the cetane number will be reduced and the explosive power will be weakened. Therefore, in order to improve the ignition performance of the modified methanol, in some aspects, the present invention uses nitrates or organic nitrate compounds as power accelerators, suitable nitrates such as but not limited to: potassium nitrate, sodium nitrate, etc. Preferably potassium nitrate; suitable organic nitrate compounds such as cyclohexyl nitrate, isooctyl nitrate, n-ethyl nitrate, diethylene glycol dinitrate, triethylene glycol dinitrate, etc.; more The best one is isooctyl nitrate, which can effectively improve the cetane number of methanol/diesel mixed fuel, and can also improve the combustion performance and shorten the ignition time.

The saturated vapor pressure of methanol is 32 kPa, which is lower than that of gasoline (55-103 kPa), but the saturated vapor pressure of methanol/gasoline mixed fuel does not decrease with the increase of methanol content. Because of the formation of low-boiling azeotropes, the saturated vapor pressure of methanol/gasoline blends usually exceeds the requirements of gasoline. In some aspects, diethylpropene butyl phenyl ether can be used as a kinetic accelerator so that the modified methanol does not cause gas lock at high temperature.

The ignition point of methanol is +12°C, while the ignition point of gasoline is -12°C, which makes the internal combustion engine using methanol/gasoline mixed fuel difficult to start cold at low temperature. In some aspects, the present invention uses ethers, ketones or organic acids as power promoters to overcome the problem of difficult cold start of internal combustion engines and to achieve the effects of boosting and flash point regulation. Suitable ethers such as but not limited to: diisopropyl ether or methyl tert-butyl ether; suitable ketones such as but not limited to: acetone, butanone or cyclohexanone; suitable organic acids such as but not limited to: isooctanoic acid.

In some aspects, the present invention uses inorganic compounds: ferrocene, ferric fluoride, hydrogen peroxide, isopropyl hydroperoxide, tert-butyl hydroperoxide, peracetic acid, potassium permanganate, potassium nitrate As a power booster to promote complete combustion of fuel and release maximum fuel energy. At the operating temperature of the internal combustion engine, the aforementioned substances can undergo violent oxidation, decomposition and catalysis, so that the modified methanol is easily ignited by sparks, and when the modified methanol is burned, a large amount of hydrocarbon free radicals can be generated, which accelerates the oxidation rate, thereby It can completely burn the fuel, eliminate the smoke and dust, reduce the carbon deposition in the nozzle, clear the pipeline, improve the flame clarity, and make full use of the modified methanol to achieve the effect of saving fuel and reducing the emission of harmful substances.

In some aspects, dimethyl carbonate can also be used as a power accelerator in the present invention, and dimethyl carbonate is a colorless, transparent, slightly odorous, slightly sweet liquid at room temperature, with a melting point of 4°C and a boiling point of 90.1° C, density 1.069 g/cm ³ , insoluble in water, but miscible with almost all organic solvents such as alcohol, ether, ketone, etc. Dimethyl carbonate azeotropes with methanol under normal pressure, and the azeotrope temperature is 63.8°C. Therefore, dimethyl carbonate can not only be used as a cosolvent suitable for the present invention, but also can improve the octane number and oxygen content of the modified methanol, thereby improving the antiknock property.

In some aspects, isopropanol, isobutanol or tertiary butanol can also be used as a power accelerator in the present invention to support combustion, enhance the explosive power of modified methanol, increase the combustion heat of modified methanol, and reduce the Carbon deposits. Preferably, isopropanol, isobutanol or tertiary butanol can be used in combination with dimethyl carbonate to greatly increase the cetane number of the modified methanol.

In some aspects, oleic acid can also be used as a power enhancer in the present invention, and oleic acid (CH ₃ (CH ₂ ) ₇ CH=CH(CH ₂ ) ₇ COOH) is an unsaturated fatty acid, insoluble in water; in the present invention Among them, the oleic acid with lower content is used as a co-solvent, and its main function is to cooperate with the emulsifier described below to produce a micro-emulsion effect of methanol, and to make other components in the methanol additive more uniformly dispersed in the mixture. The purpose of combustion efficiency; the higher content of oleic acid is used to increase the combustion heat of modified methanol.

In some aspects, commonly used MTBE can also be used as a power booster in the present invention to increase octane number and improve antiknock ability.

In some aspects, xylene or camphor can be used as power enhancers in the present invention to improve combustion efficiency.

Based on the whole methanol additive, the content of power accelerator can be 25-55 vol.%, such as but not limited to: 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54 or 55 vol.%, preferably 30-50 vol.% , preferably 34-47 vol.%.

The methanol additive of the present invention may include one or more, such as but not limited to, one, two, three, four, five, six, seven, eight, nine or ten kinds of power accelerators, such as but not limited to: alcohol, organic acid and carbonic acid Dimethyl esters, or ketones, alcohols, organic acids, nitrates, organic nitrate compounds, metal salt compounds, hydrogen peroxide and dimethyl carbonate, preferably more than four kinds of power accelerators, preferably eight kinds The above kinetic accelerators, such as but not limited to: acetone, methyl ethyl ketone, isopropanol, n-butanol, isobutanol, dimethyl carbonate, isooctyl nitrate and ferrocene, as well as third butanol, Isooctanoic acid, diisopropyl ether, methyl tertiary butyl ether, iron fluoride, potassium nitrate or 35% hydrogen peroxide. When using two or more power boosters, the content of each power booster component can be 30 vol.% or less based on the total methanol additive, such as but not limited to: 2, 4, 5, 6, 8 , 10, 12, 14, 15, 16, 18, 20, 22, 24, 25, 26, 28 or 30 vol.% methanol calorific value agent

As mentioned above, the calorific value of methanol is much lower than that of gasoline, so the known modified methanol often has the problem of insufficient power. In some aspects, the present invention uses _C1 - _C12 straight or branched chain alkanes, ethers, sesame oil, N,N-dimethylformamide, N,N-dimethylacetamide, tetrahydrofuran, Tetrahydropyran, 8-hydroxyquinoline, polyisobutylene or their mixtures are used as methanol calorific value agents to increase the calorific value of modified methanol, adjust the boiling point, increase evaporation and gasification, improve use efficiency, and burn products No pollution to the environment. Suitable C ₁ -C ₁₂ straight or branched chain alkanes such as but not limited to: methane, ethane, propane, butane, pentane, hexane, heptane, octane, dimethoxyethane, butyl ring Hexane; suitable ethers such as, but not limited to, diethyl ether or petroleum ether. In some aspects, diethyl ether can be added with the polyisobutylene, and the volume ratio of diethyl ether to polyisobutylene can be 20 to 30, such as, but not limited to: 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30.

Based on the whole methanol additive, the content of methanol calorific value agent can be 7-25 vol.%, such as but not limited to: 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 , 19, 20, 21, 22, 23, 24 or 25 vol.%, preferably 10-23 vol.%, particularly preferably 13-20 vol.%.

The methanol additive of the present invention may include one or more, such as but not limited to, one, two, three, four, five, six, seven, eight, nine or ten methanol calorific value agents, such as but not limited to: ether and tetrahydrofuran, or C ₁ -C ₁₂ linear or branched alkanes, ethers and tetrahydrofuran; preferably two or more methanol calorific value agents, especially five or more methanol calorific value agents, such as but not limited to: n-hexane, octane , petroleum ether, sesame oil, tetrahydrofuran, and, if necessary, diethyl ether, a mixture of polyisobutylene and diethyl ether, N,N-dimethylformamide or N,N-dimethylacetamide. When two or more methanol calorific value agents are used, the content of each methanol calorific value agent can be 15 vol.% or less based on the entire methanol additive, such as but not limited to: 1, 2, 3, 4 , 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 vol.%. Corrosion inhibitor

Methanol is known to be highly corrosive; in addition, methanol is hygroscopic, which is susceptible to air oxidation or bacterial fermentation during storage. The corrosion inhibitor used in the present invention is used to adjust the corrosive power of methanol to metal and the swelling property of methanol to rubber/plastic, and has the characteristics of good oil solubility and strong reducibility.

Corrosion inhibitors suitable for use in the present invention include, but are not limited to, ethyl acetate, triethanolamine, N-phenyl-α-naphthylamine (T531), ethylene diphosphonic acid, triacetin, hexamethylenetetramine Amines, benzotriazoles (eg T406: benzotriazole octadecylamine salt, TTAS: methylbenzotriazole sodium salt, methylbenzotriazole, N-nonyloxymethylbenzotriazole), Thiadiazoles (eg T561: 2,5-bis[alkyldithio]thiadiazoles), thiophosphorus zinc dialkyldithiophosphates (ZDDP), T504: sulfurized alkylphenols, etc.

Corrosion inhibitors may also include one or more of the following combinations: amine-type corrosion inhibitors (such as N-phenyl-α-naphthylamine or octyl/butyl mixed alkyl substituted diphenylamines); phenol-type corrosion inhibitors, such as T501: 2,6-di-tert-butyl-p-cresol, 2,6-di-tert-butylphenol, 2,4-dimethyl-6-tert-butylphenol, T502: mixed liquid masking phenol , T5114,4: methylene bis (2,6-di-tert-butylphenol), T512: phenolic ester type corrosion inhibitor, etc.; phenolamine type corrosion inhibitor, such as 2,6-di-tert-butyl- α-Dimethylamino-p-cresol; sulfur phosphorus type antioxidant and anti-corrosion agent and dialkyldithiocarbamate.

Methanol has a swelling and cracking effect on internal combustion engine parts such as rubber/plastic, which accelerates the aging of materials. Corrosion inhibitors can also reduce methanol swelling of rubber parts and slow down material aging.

Corrosion inhibitors with excellent anti-wear properties, anti-oxidation and anti-corrosion properties such as but not limited to: 2,6-dimethylmorpholine, 2,6-di-tert-butylphenol, tris(2-phosphate) chloroethyl) ester, N-ethylmorpholine, dicumyl peroxide, 2,4,6-trichlorophenyl isocyanate, sodium dibutyl dithiocarbamate, stearic acid, n-hexanol, Butyl acetate.

Based on the whole methanol additive, the content of corrosion inhibitor can be 1-15 vol.%, such as but not limited to: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 vol.%, preferably 3-12 vol.%, particularly preferably 5-10 vol.%.

The methanol additive of the present invention may include one or more, such as but not limited to one, two, three, four, five, six, seven, eight, nine or ten corrosion inhibitors, such as but not limited to: ethyl acetate and 2, 6-di-tert-butylphenol, or C ₁ -C ₁₂ straight or branched chain alkanes, ethers and tetrahydrofuran; preferably two or more corrosion inhibitors, especially four or more corrosion inhibitors, such as but Not limited to: ethyl acetate, triethanolamine, 2,6-di-tert-butylphenol, methylbenzotriazole, and optionally 2,6-dimethylmorpholine or N-phenyl-α-naphthalene Amine (T531). When two or more corrosion inhibitors are used, the content of each corrosion inhibitor component can be 10 vol.% or less based on the total methanol additive, such as but not limited to: 1, 2, 3, 4, 5 , 6, 7, 8, 9 or 10 vol.%. Anti-blocking agent

The function of the anti-clogging agent used in the present invention is to inhibit the formation of deposits in the fuel nozzle, the intake valve and the combustion chamber.

Examples of anti-clogging agents suitable for use in the present invention include, but are not limited to, polyetheramines, N,N'-disalicylidene diamine, fatty alcohol polyoxyethylene ethers, benzyl alcohol, or urotropine. Polyetheramine is a kind of polymer whose main chain is polyether structure and terminal active functional group is amine group. By choosing different polyoxyalkylene structures, a series of properties such as reactivity, toughness, viscosity and hydrophilicity of polyetheramine can be adjusted, and the amine group provides the possibility for polyetheramine to react with various compounds. Its special molecular structure endows polyetheramine with excellent comprehensive properties, and has excellent cleaning, dispersing, corrosion inhibition and antioxidant properties.

Based on the whole methanol additive, the content of anti-clogging agent can be 1-15 vol.%, such as but not limited to: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15 vol.%, preferably 3-12 vol.%, particularly preferably 5-10 vol.%.

The methanol additive of the present invention may include one or more, such as but not limited to, one, two, three, four, five, six, seven, eight, nine or ten anti-blocking agents, such as but not limited to: polyetheramine and urethane Tropine, or polyetheramine, fatty alcohol polyoxyethylene ether and urotropine; preferably two or more anti-blocking agents, especially three or more anti-blocking agents, such as but not limited to: polyetheramine , fatty alcohol polyoxyethylene ether, urotropine, and benzyl alcohol or N,N'-disalicylic propylene diamine as needed. When two or more anti-clogging agents are used, the content of each anti-clogging agent can be 7.5 vol.% or less based on the total methanol additive, such as but not limited to: 0.5, 1, 1.5, 2, 2.5 , 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7 or 7.5 vol.%. cosolvent

The hydroxyl group (OH) of methanol occupies a considerable proportion in the molecule, which is a polar material and can only be miscible with other polar components. Combustion characteristics, appropriate co-solvent must be used to solve the problem of layered compatibility between methanol and non-polar components, and at the same time improve the low temperature performance of methanol mixed fuel, improve combustion effect, cold start of internal combustion engine, and reduce the emission of carbon monoxide and nitrogen oxides The concentration of the compound can improve the anti-vibration and explosion-proof, suppress the saturated vapor pressure, and solve the problem of high temperature gas resistance.

The cosolvent suitable for the present invention may have the following characteristics: low melting point, good fluidity, no damage to the emulsification system, non-corrosiveness and the like. In some cases, when the flash point, octane number or cetane number of the co-solvent is relatively high, the prepared methanol additive has good effect.

The cosolvents suitable for the present invention are not particularly limited, such as but not limited to: alcohol solvents, ether solvents, alcohol ether solvents, aldehyde solvents, ketone solvents, ester solvents, benzene solvents, oleic acid, castor sesame oil or a mixture thereof. Alcohol solvents include methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, tertiary butanol, n-amyl alcohol, isoamyl alcohol, n-hexanol, iso-hexanol, n-heptanol, iso-heptanol , n-octanol, isooctanol, polyethylene glycol and other alcohol compounds, preferably C ₁ -C ₂₀ alcohol, especially isopropanol, n-butanol or isobutanol; ether solvents include ether, Tertiary butyl methyl ether, ethylene glycol dimethyl ether, ethylene glycol monobutyl ether, and other ether compounds, preferably ethylene glycol monobutyl ether; alcohol ether solvents include propylene glycol methyl ether, ethylene glycol ethyl ether and other compounds Alcohol ether compounds, preferably ethylene glycol monobutyl ether; aldehyde solvents include paraformaldehyde and other aldehyde compounds; ketone solvents include acetone, methyl ethyl ketone, pentanone, hexanone, heptanone, octanone, cyclohexane Acetone, cyclobutanone, cyclopentanone, cyclohexanone, cycloheptanone, cyclooctanone and other ketone compounds; ester solvents include ethyl acetate, dimethyl carbonate, tetramethyl orthocarbonate, triethyl orthoformate Esters and other esters; benzene-based solvents include toluene, xylene, and other benzene-based compounds.

In the methanol additive of the present invention, the content of the co-solvent is the remaining content of other components, preferably 15-40 vol.% based on the entire methanol additive, such as but not limited to: 15, 16, 17, 18, 19, 20 , 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 or 40 vol.%, more preferably 20-37 vol .%, preferably 24-33 vol.%.

The methanol additive of the present invention may include one or more, such as but not limited to one, two, three, four, five, six, seven, eight, nine or ten co-solvents, such as but not limited to: alcohol solvents, ether solvents And oleic acid, preferably contains three or more cosolvents, especially preferably contains five or more cosolvents, such as but not limited to: cyclohexanone, n-propanol, isooctanol, ethylene glycol monobutyl ether, oleic acid, and ethanol, n-amyl alcohol, diethyl ether, ethylene glycol ethyl ether, propylene glycol methyl ether, polyethylene glycol, paraformaldehyde or xylene as required. When two or more co-solvents are used, the content of each co-solvent component can be 22 vol.% or less based on the entire methanol additive, such as but not limited to: 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 or 22 vol.%. Emulsifier

Since polar methanol and non-polar gasoline and diesel are incompatible with each other, even if a co-solvent is used to mix methanol, gasoline and diesel, once a small amount of water is added (methanol can easily absorb water in the air), it will still cause emulsification and stratification. In order to improve the problem of emulsification and stratification, an emulsifier may be added to the methanol additive of the present invention according to circumstances. The function of the emulsifier is to form a uniform emulsion between methanol and a solvent with low polarity.

Any known emulsifier is suitable for use in the present invention, preferably isopropyl myristate (isopropyl myristate), Span series (Span) emulsifier, Tween series (TWEEN) emulsifier or any of them combination. Span emulsifier is an ester formed by the condensation of sorbitan and higher fatty acids. It is soluble in methanol and has a hydrophilic-lipophilic balance (HLB) of 4.7. It is an ideal w/o emulsifier with strong emulsifying, dispersing, For lubricating effect, it can be mixed with various emulsifiers, especially with Tween emulsifier. Tween emulsifier is the condensate of span and ethylene oxide (polyoxyethylene sorbitan fatty acid ester), which can be divided into TWEEN-20, TWEEN-40, WEEN-60, TWEEN-80 and other categories. Preferably it is TWEEN-80, especially preferably used in combination with Span series emulsifiers, such as but not limited to: the combination of SP-80 and TWEEN-80.

Emulsifiers can also further increase the flash point of modified methanol. As mentioned above, the flash point is one of the key properties of modified methanol. Since the flash point of methanol is low, in order to make the modified methanol meet the flash point requirements of commercial diesel, the power accelerator mentioned above can be used to increase enough Flash point; optional emulsifier. Xianxin believes that the microstructure of methanol-diesel should ideally be a complete water-in-oil microemulsion (which requires the action of an emulsifier to achieve ideal emulsification). Type-combination effect to increase flash point. If a substance with strong intramolecular or intermolecular hydrogen bond is selected, the interaction between molecules or intramolecular can also indirectly increase the flash point of modified methanol.

Based on the whole methanol additive, the content of emulsifier can be 10-30 vol.%, such as but not limited to: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 , 23, 24, 25, 26, 27, 28, 29 or 30 vol.%, preferably 13-28 vol.%, particularly preferably 15-25 vol.%.

As mentioned above, the methanol additive of the present invention may include one or more, such as but not limited to, one, two, three, four, five, six, seven, eight, nine or ten emulsifiers, such as but not limited to: fourteen A combination of isopropyl acid (isopropyl myristate), SP-80 and TWEEN-80; preferably two or more emulsifiers are included. When two or more emulsifiers are used, the content of each emulsifier component can be 17 vol.% or less based on the total methanol additive, such as but not limited to: 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 vol.%. modifier

The methanol additive of the present invention may include one or more of the following, such as but not limited to one, two, three, four, five, six, seven, eight, nine or ten modifiers:

Sodium bicarbonate and/or sodium hydroxide: If the methanol additive of the present invention and diesel oil are to be used together, due to the high sulfur content of diesel oil, sodium bicarbonate and/or sodium hydroxide can be used to make the modified Methanol is sufficiently basic to neutralize the acidic substances produced after combustion.

Based on the whole methanol additive, the content of sodium bicarbonate may be 0.01-0.4 vol.%, preferably 0.05-0.3 vol.%, especially preferably 0.1-0.2 vol.%. The content of sodium hydroxide may be 0.1-18 vol.%, preferably 0.5-15 vol.%, particularly preferably 1-12 vol.%.

Cyclohexylamine: it can effectively reduce the smoke, promote the complete combustion of modified methanol, and reduce the emission of harmful substances; the content of cyclohexanone can be 0.1-10 vol.%, preferably 0.5-5 vol.%, especially 1-3 vol.%.

Glycerol: It can be used as an antifreeze agent; the content of glycerin can be 0.01-1.5 vol.%, preferably 0.1-1.3 vol.%, especially 0.3-1.1 vol.%, based on the whole methanol additive.

Camphor: It acts as a deodorant. In some embodiments, the camphor and ethanol are configured into camphor liquid in a volume ratio of camphor:ethanol=1:5; in terms of the whole methanol additive, the content of the aforementioned camphor liquid can be 0.1-18 vol.%, preferably 0.5-15 vol.%, preferably 1-12 vol.%.

Acetic acid: it can be used as a deodorant and promote combustion at the same time; the content of acetic acid can be 0.01-2 vol.%, preferably 0.05-1.5 vol.%, especially 0.1-1 vol. .%.

The total content of the modifier can be 1-10 vol.% based on the total methanol additive, such as but not limited to: 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 vol.%, Preferably it is 2-8 vol.%, especially preferably 3-7 vol.%. Modified methanol

The methanol additive of the present invention is used to provide modified methanol as an ideal substitute for internal combustion engines or boilers. The methanol modified by the methanol additive of the present invention can be stably mixed with commercial gasoline and diesel to form a methanol mixed fuel. It should be noted that although gasoline and diesel oil may not be added to the modified methanol of the present invention, in some embodiments, the properties of the modified methanol of the present invention are not substantially different from those of commercial gasoline and diesel.

The purity of methanol suitable for the methanol additive of the present invention is 95% or higher, such as but not limited to: 95%, 96%, 97%, 98% or 99%; preferably 97.5% or higher, such as but not limited to : 97.5%, 98%, 98.5%, 99% or 99.5; preferably 99% or higher, such as but not limited to: 99%, 99.1%, 99.2%, 99.3%, 99.4%, 99.5%, 99.6%, 99.7%, 99.8% or 99.9%. Methanol suitable for the present invention can be prepared from coal and coke; methanol suitable for the present invention can be prepared from natural gas; methanol suitable for the present invention can be prepared from naphtha/heavy oil; methanol suitable for the present invention can be prepared from bialcohols .

The volume mixing ratio of methanol additive and methanol can be methanol additive: methanol=15:85 to 1:99, such as but not limited to 15:85, 14:86, 13:87, 12:88, 11:89, 10:90 , 9:91, 8:92, 7:93, 6:94, 5:95, 4:96, 3:97, 2:98 or 1:99; preferred methanol additive: methanol = 10:90 to 1:9 99, especially preferred methanol additive: methanol = 5:95 to 1:99.

As mentioned above, the calorific value of methanol is only 4,650 kcal/kg. Without adding other fuels (such as commercial gasoline and diesel), simply use the methanol additive of the present invention (excluding other fuels such as gasoline and diesel) The calorific value of methanol can be improved to 5,200 kcal/kg or higher; preferably 5,600 kcal/kg or higher; more preferably 6,000 kcal/kg or higher. Gasoline, Diesel

The modified methanol of the present invention may be additionally added with other fuels such as gasoline and diesel, so as to further adjust the calorific value of the modified methanol to 6,000 kcal/kg or higher; preferably 6500 kcal/kg or higher according to the needs of the final application ; preferably 7,000 kcal/kg or higher.

Based on the volume of methanol, the amount of gasoline and diesel added is 30 vol.% or less, such as but not limited to: 5, 10, 15, 20, 25 or 30 vol.%; preferably 20 vol.% or more Low, such as but not limited to: 2, 4, 5, 6, 8, 10, 12, 14, 15, 16, 18 or 20 vol.%; preferably 10 vol.% or less, such as but not limited to: 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 vol.%. The range of the amount of gasoline and diesel added can be any combination of the above values, for example: 1-30 vol.%, 3-20 vol.% or 6-10 vol.%.

If diesel fuel is used, polymethoxydimethyl ether can be added as needed to improve cetane number and facilitate ignition. Based on the volume of diesel oil, the polymethoxydimethyl ether can be 0.1 to 30 vol.%, such as but not limited to: 0.1, 0.5, 1, 2, 4, 5, 6, 8, 10, 12, 14, 15 , 16, 18, 20, 22, 24, 25, 26, 28 or 30 vol.%, preferably 1-25 vol.%, particularly preferably 5-20 vol.%. miscibility modifier

The modified methanol of the present invention may be additionally added with a miscibility modifier to further adjust the calorific value of the modified methanol to 8,000 kcal/kg or higher according to the needs of the final application; in some embodiments, the calorific value of the modified methanol Adjustable to 9,500 kcal/kg or higher; in some embodiments, the calorific value of the modified methanol may be adjusted to 10,500 kcal/kg or higher.

Miscibility modifiers suitable for use in the present invention may include higher alcohols (C ₇ -C ₂₀ alcohols), surfactants and C ₁ -C ₁₂ straight or branched chain alkanes. Suitable surfactants, such as, but not limited to, ethoxylates of molecules with hydrophilic side chains, polyols, or combinations thereof, hydrophilic side chains may include polyethylene oxide side chains or a combination of polyethylene and polyethylene oxide side chains Combinations such as, but not limited to, nonoxynol-9 (Nonoxynol-9) or polyethylene glycol octylphenyl ether (Triton-X-100). Suitable C ₁ -C ₁₂ straight or branched chain alkanes, such as but not limited to: methane, ethane, propane, butane, pentane, hexane, heptane or octane, etc.

Based on the total amount of the miscibility modifier, the content of the surfactant is 1-20 vol.%, such as but not limited to: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 , 13, 14, 15, 16, 17, 18, 19 or 20 vol.%, preferably 2-17 vol.%, particularly preferably 3-14 vol.%.

The content of C ₁ -C ₁₂ linear or branched alkanes is 1-10 vol.% based on the total amount of the miscibility modifier, such as but not limited to: 1, 2, 3, 4, 5, 6, 7, 8 , 9 or 10 vol.%, preferably 2-9 vol.%, particularly preferably 4-8 vol.%.

Higher alcohol (C ₇ -C ₂₀ alcohol) is the balance of the miscibility modifier, based on the total amount of the miscibility modifier, its content can be 70-98 vol.%, such as but not limited to: 70, 72, 74 , 75, 76, 78, 80, 82, 84, 85, 86, 88, 90, 92, 94, 95, 96 or 98 vol.%, preferably 74-96 vol.%, particularly preferably 78-93 vol.%

Based on the whole of the modified methanol, the content of the whole miscibility modifier is 40 vol.% or less, such as but not limited to: 0.1, 0.5, 1, 2, 4, 5, 6, 8, 10, 12, 14 , 15, 16, 18, 20, 22, 24, 25, 26, 28, 30, 32, 34, 35, 36, 38 or 40 vol.%; preferably 35 vol.% or less; especially 30 vol.% or less. Preparation

The method for preparing the methanol additive of the present invention comprises: under normal temperature and pressure, mixing the aforementioned power accelerator, corrosion inhibitor, methanol calorific value agent, anti-blocking agent, and emulsifier as needed to form an intermediate mixture; Cosolvents and optionally modifiers are mixed with the intermediate mixture.

The preparation method of the present invention is favorable for mixing and dissolving each component of the methanol additive, and simultaneously preventing by-products from the reaction when all the components are mixed at the same time, which affects the use effect of the additive. The feeding method of the present invention effectively avoids the problem of poor performance caused by a single feeding, and enables the methanol additive of the present invention to form an ideal water-in-oil microdroplet structure.

The mixing method involved in the preparation method of the present invention can be any known mixing method, such as but not limited to: rotary stirring, periodic or random shearing stirring, magnetic resonance mixing and negative pressure (<25Mpa) assisting mingling etc.

The preparation method of the present invention can preferably be carried out at room temperature (25° C.) without further heating to aid solubility. Example

The following example further illustrates the effect of the present invention through the example of methanol additive: Example 1: Preparation of methanol additive

At room temperature and pressure, thoroughly mix the components listed in each of the following samples to prepare methanol additive samples 1-10: Sample 1 Numbering Element Content (vol%) 1 isopropyl alcohol 38 2 Octane 3 3 Grate oil 4 4 Petroleum ether 5 5 tetrahydrofuran 4 6 n-hexane 3 7 Triethanolamine 7 8 Fatty alcohol polyoxyethylene ether 8 9 Cyclohexanone 28 Σ 100 Sample 2 Numbering Element Content (vol%) 1 Dimethyl carbonate 36 2 Octane 20 3 Triethanolamine 2 4 Ethyl acetate 3 5 methylbenzotriazole 2 6 2,6-Di-tert-butylphenol 2 7 Urotropine 6 9 Oleic acid 29 Σ 100 Sample 3 Numbering Element Content (vol%) 1 n-butanol 44 2 Grate oil 14 3 Ethyl acetate 5 4 Fatty alcohol polyoxyethylene ether 2 5 Urotropine 4 6 Polyetheramine 3 9 n-Propanol 28 Σ 100 Sample 4 Numbering Element Content (vol%) 1 Isobutanol 40 2 Petroleum ether 17 3 methylbenzotriazole 9 4 Polyetheramine 7 5 Cyclohexanone 5 6 Oleic acid 4 7 n-Propanol 7 8 Isooctanol 6 9 Ethylene glycol monobutyl ether 5 Σ 100 Sample 5 Numbering Element Content (vol%) 1 isopropyl alcohol 3 2 Dimethyl carbonate 4 3 n-butanol 6 4 Isobutanol 5 5 Isooctyl nitrate 4 6 Ferrocene 6 7 acetone 5 8 Butanone 5 9 n-butanol 7 10 tetrahydrofuran 15 11 2,6-Di-tert-butylphenol 6 12 Fatty alcohol polyoxyethylene ether 5 13 Isooctanol 29 Σ 100 Sample 6 Numbering Element Content (vol%) 1 isopropyl alcohol 3 2 Dimethyl carbonate 3 3 n-butanol 4 4 Isobutanol 5 5 Isooctyl nitrate 5 6 Ferrocene 6 7 acetone 8 8 Butanone 2 9 n-butanol 3 10 Isooctanoic acid 5 11 tertiary butanol 3 12 n-hexane 13 13 2,6-Di-tert-butylphenol 2 14 Urotropine 5 15 Ethylene glycol monobutyl ether 33 Σ 100 Sample 7 Numbering Element Content (vol%) 1 Ferrocene 36 2 Octane 2 3 Grate oil 4 4 Petroleum ether 2 5 tetrahydrofuran 3 6 n-hexane 2 7 ether 3 8 N,N-Dimethylformamide 4 9 methylbenzotriazole 8 10 Polyetheramine 7 11 Cyclohexanone 29 Σ 100 Sample 8 Numbering Element Content (vol%) 1 Butanone 43 2 tetrahydrofuran 14 3 Triethanolamine 1 4 Ethyl acetate 2 5 methylbenzotriazole 2 6 2,6-Di-tert-butylphenol 1 7 2,6-Dimethylmorpholine 2 8 N-Phenyl-α-naphthylamine (T531) 2 9 Fatty alcohol polyoxyethylene ether 9 10 Oleic acid twenty four Σ 100 Sample 9 Numbering Element Content (vol%) 1 n-butanol 39 2 Petroleum ether 16 3 Ethyl acetate 7 4 Fatty alcohol polyoxyethylene ether 2 5 Urotropine 2 6 Polyetheramine 2 7 Benzyl alcohol 2 8 N,N'-Disalicylidene Propylene Diamine 2 9 n-Propanol 28 Σ 100 Sample 10 Numbering Element Content (vol%) 1 acetone 42 2 Grate oil 15 3 Triethanolamine 6 4 Urotropine 6 5 Cyclohexanone 4 6 Oleic acid 5 7 n-Propanol 5 8 Isooctanol 4 9 Ethylene glycol monobutyl ether 6 10 ether 3 11 Ethanol 4 Σ 100 Example 2: Preparation of modified methanol

Under normal temperature and pressure, the methanol additives of samples 1-10 were mixed with methanol with a purity of 99.9% in a volume ratio of 3.5:96.5. The properties of the obtained modified methanol samples 11-20 are shown in Table 1: Table 1: After Test results of properties of methanol modified by methanol additives Test items and test standards Sample 11 Sample 12 Sample 13 Sample 14 Sample 15 Sample 16 Sample 17 Sample 18 Sample 19 Sample 20 Methanol Additive Sample Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 Sample 7 Sample 8 Sample 9 Sample 10 Net heat of combustion GB/T 384-81 (2004) 20.630 MJ/kg; 4,929 kcal/kg 20.710 MJ/kg; 4,948 kcal/kg 20.550 MJ/kg; 4,909 kcal/kg 20.810 MJ/kg; 4,972 kcal/kg 20.610 MJ/kg; 4,924 kcal/kg 20.640 MJ/kg; 4,931 kcal/kg 20.530 MJ/kg; 4,905 kcal/kg 20.500 MJ/kg; 4,898 kcal/kg 20.840 MJ/kg; 4,979 kcal/kg 20.870 MJ/kg; 4,986 kcal/kg Organic chloride GB/T 18612-2011 104.7 mg/kg 101.0 mg/kg 97.2 mg/kg 101.8 mg/kg 105.0 mg/kg 99.8 mg/kg 100.2 mg/kg 100.4 mg/kg 104.4 mg/kg 100.3 mg/kg Sulfur content SH/T 0689-2000 7.9 mg/kg 7.7 mg/kg 6.7 mg/kg 6.4 mg/kg 6.9 mg/kg 7.2 mg/kg 6.5 mg/kg 7.2 mg/kg 6.6 mg/kg 6.7 mg/kg pH value at 25°C GB/T 9724-2007 7.39 7.44 7.50 7.49 7.49 7.50 7.38 7.40 7.41 7.55 Micro carbon residue (10% bottom) GB/T 17144-97 (2004) 0.10% (m/m) 0.13% (m/m) 0.13% (m/m) 0.14% (m/m) 0.12% (m/m) 0.12% (m/m) 0.12% (m/m) 0.13% (m/m) 0.10% (m/m) 0.11% (m/m) Ash GB/T 508-85 (2004) <0.001% (m/m) Copper corrosion at 50°C for 3 hours GB/T 5096-2017 1a Moisture GB/T 6283-2008 1.567% (m/m) 1.633% (m/m) 1.608% (m/m) 1.574% (m/m) 1.575% (m/m) 1.586% (m/m) 1.628% (m/m) 1.632% (m/m) 1.607% (m/m) 1.619% (m/m) Mechanical impurities GB/T 511-2010 NIL% (m/m) Visual Flash Point ASTM D56-16a <10°C Methanol GB/T 31776-2015 95.64% (m/m) 97.13 (m/m) 96.53 (m/m) 95.55 (m/m) 95.98 (m/m) 96.57 (m/m) 95.92 (m/m) 96.86 (m/m) 97.08 (m/m) 97.36 (m/m) Example 3: Preparation of miscibility regulator

Under normal temperature and pressure, fully mix 8 vol% nonoxynol-9 (Nonoxynol-9), 6 vol% n-hexane and 85 vol% octanol to prepare a miscibility regulator; in addition, based on the total volume of the mixture, the 10 vol.% of commercially available 92 unleaded gasoline was added to the modified methanol samples 11-20 of Example 2, and finally the mixture of gasoline and modified methanol obtained was mixed with a miscibility modifier in a volume ratio of 80:20, The properties of the obtained methanol mixed fuel samples 21-30 are shown in Table 2: Table 2: Property test results of methanol mixed fuel samples 21-30 Test items and test standards Sample 21 Sample 22 Sample 23 Sample 24 Sample 25 Sample 26 Sample 27 Sample 28 Sample 29 Sample 30 Modified methanol sample Sample 11 Sample 12 Sample 13 Sample 14 Sample 15 Sample 16 Sample 17 Sample 18 Sample 19 Sample 20 Moisture ASTM E203-01 0.609 wt% 0.618 wt% 0.610 wt% 0.606 wt% 0.620 wt% 0.618 wt% 0.606 wt% 0.609 wt% 0.619 wt% 0.623 wt% Ash ASTM D482-13 0.0268 wt% 0.0277 wt% 0.0270 wt% 0.0283 wt% 0.0275 wt% 0.0265 wt% 0.0278 wt% 0.0281 wt% 0.0270 wt% 0.0277 wt% Flash Point ASTM D92-18 <40 °C Fire point ASTM D92-18 <40 °C Density at 15°C ASTM D4052-18 0.8472 g/mL 0.8470 g/mL 0.8458 g/mL 0.8461 g/mL 0.8457 g/mL 0.8456 g/mL 0.8471 g/mL 0.8465 g/mL 0.8470 g/mL 0.8463 g/mL Gross Calorific Value ASTM D240-17 8048 kcal/kg 8040 kcal/kg 8029 kcal/kg 8031 kcal/kg 8047 kcal/kg 8037 kcal/kg 8037 kcal/kg 8034 kcal/kg 8047 kcal/kg 8029 kcal/kg Hydrogen (Elemental Analyzer) 12.2% 13.1% 12.6% 12.8% 13.2% 12.1% 12.2% 12.8% 13.2% 12.7% Sulfur (Elemental Analyzer) <0.1% Nitrogen (Elemental Analyzer) <0.1% Carbon (Elemental Analyzer) 65.6% 63.8% 64.5% 64.4% 63.8% 65.0% 64.4% 64.9% 65.7% 65.5% Micro carbon residue ASTM D4530-15 0.16 wt% 0.16 wt% 0.17 wt% 0.11 wt% 0.14 wt% 0.16 wt% 0.11 wt% 0.13 wt% 0.16 wt% 0.12 wt% Viscosity at 40°C ASTM D445-19 2.314 mm ² /s 2.311 2.307 2.314 2.317 2.310 2.322 2.302 2.312 2.310 Chlorine reference BS EN 14582:2016, analysed by ion chromatography <50ppm

The total calorific value shown in Table 2 is measured by a calorie meter in accordance with ASTM D240-17, without any atomization process (different from the combustion process of an internal combustion engine); in addition, it can be seen from the exhaust gas test that the methanol of this embodiment is used. The mixed fuel has high oxygen content, sufficient combustion, and all exhaust indicators are obviously within the qualified value, which can meet the needs of environmental protection and greatly improve the ecological environment. Example 4: Power Generation Test

Under normal temperature and pressure, the modified methanol sample 11 in Example 2 and the miscibility regulator in Example 3 were mixed in a volume ratio of 80:20 to prepare a methanol mixed fuel sample 31 (without the addition of commercially available 92 lead-free fuel). gasoline).

The methanol mixed fuel sample 21, the methanol mixed fuel sample 31 and the commercially available 92 unleaded gasoline were used as the fuel for the engine (SUBARU, model: GSV13000T), and their test results are shown in Table 3. Table 3: Power Generation Tests fuel combustion efficiency Power generation capacity Methanol blend fuel sample 21 94% 6 degrees/liter Methanol blend fuel sample 31 60% 4.8 degrees/liter Commercially available 92 unleaded gasoline 40% 3.2 degrees/liter

When the methanol modified by the methanol additive of the present invention is used in an internal combustion engine or a boiler, it can effectively prevent and eliminate carbon deposits, which is beneficial to dredging the oil circuit and prolonging the service life of the device or equipment; in addition, the octane number of the modified methanol is high and low. Emission of harmful substances, good anti-knock performance, low fuel consumption and noise, efficient power to save fuel, can improve the efficiency of internal combustion engines, and have the advantages of strong power.

This specification has been written with reference to various non-limiting and non-exhaustive examples. However, one of ordinary skill will recognize that various alternatives, modifications, or combinations of any of the disclosed embodiments (or portions thereof) may be made within the scope of this specification. Accordingly, it is to be covered and understood that this specification supports other embodiments not expressly set forth herein. Such embodiments may be accomplished, for example, by combining, modifying or recombining any of the disclosed steps, components, elements, features, aspects, characteristics, limitations, and the like of the various non-limiting and non-exhaustive embodiments described in this specification. similar factors to obtain. In this manner, the applicant reserves the right to amend the scope of the application during prosecution to add features as variously described in this specification.

Claims (22)

A methanol additive comprising, based on the total volume of the methanol additive: 25-55 vol.% power enhancer; 7-25 vol.% methanol calorific value agent; 1-15 vol.% corrosion inhibitor; 1-15 vol.% anti-clogging agent; and The balance is cosolvent. The methanol additive of claim 1, wherein the co-solvent comprises alcohol, ether, alcohol ether, aldehyde, ketone, ester, benzene, oleic acid, castor oil, or a combination thereof. The methanol additive of claim 2, wherein the co-solvent is selected from the group consisting of cyclohexanone, oleic acid, n-propanol, isooctanol and ethylene glycol monobutyl ether. The methanol additive of any one of claims 1 to 3, wherein the kinetic accelerator comprises isopropanol, isooctanoic acid, dimethyl carbonate, n-butanol, isobutanol, tertiary butanol, iron fluoride, nitric acid Isooctyl ester, ferrocene, acetone, methyl tert-butyl ether, diisopropyl ether, hydrogen peroxide, potassium nitrate, methyl ethyl ketone, n-butanol, acetone, or combinations thereof. The methanol additive of claim 4, wherein the kinetic accelerator is selected from the group consisting of: isopropanol, dimethyl carbonate, n-butanol, isobutanol, isooctyl nitrate, ferrocene, Acetone, butanone, n-butanol and acetone. The methanol additive of any one of claims 1 to 3, wherein the corrosion inhibitor comprises triethanolamine, ethyl acetate, methylbenzotriazole, 2,6-dimethylmorpholine, 2,6-bis Tertiary-butylphenol, N-phenyl-α-naphthylamine (T531), or a combination thereof. The methanol additive of claim 6, wherein the corrosion inhibitor is selected from the group consisting of triethanolamine, ethyl acetate, methylbenzotriazole, and 2,6-di-tert-butylphenol. The methanol additive of any one of claims 1 to 3, wherein the methanol calorific value agent comprises C ₁ -C ₁₂ straight or branched chain alkanes, diethyl ether, sesame oil, petroleum ether, tetrahydrofuran, polyisobutylene, N,N- Dimethylformamide, N,N-dimethylacetamide, or a combination thereof. The methanol additive of claim 8, wherein the methanol calorific value agent is selected from the group consisting of n-hexane, octane, grate oil, petroleum ether and tetrahydrofuran. The methanol additive according to any one of claims 1 to 3, wherein the anti-clogging agent comprises benzyl alcohol, N,N'-disalicylidene, polyetheramine, fatty alcohol polyoxyethylene ether, urethane Tropine or a combination thereof. The methanol additive of claim 10, wherein the anti-clogging agent is selected from the group consisting of: fatty alcohol polyoxyethylene ether, urotropine and polyetheramine. The methanol additive of any one of claims 1 to 3, further comprising 10-30 vol.% emulsifier based on the total volume of the methanol additive. The methanol additive of any one of claims 1 to 3, further comprising a modifier selected from the group consisting of sodium bicarbonate, sodium hydroxide, cyclohexylamine, glycerin, camphor and acetic acid. A modified methanol comprising the methanol additive according to any one of claims 1 to 13 and methanol. The modified methanol of claim 14, wherein the purity of the methanol is 95% or higher. The modified methanol of claim 14 also includes gasoline or diesel in an amount of 30 vol.% or less based on the total volume of the methanol additive. The modified methanol of claim 16, which comprises diesel oil and 0.1-30 vol.% of polymethoxydimethyl ether based on the volume of the diesel oil. The modified methanol according to any one of claims 14 to 17, further comprising less than 40 vol.% of a miscibility modifier based on the volume of methanol. The modified methanol of claim 18, wherein the miscibility modifier comprises a C ₇ -C ₂₀ alcohol, a surfactant and a C ₁ -C ₁₂ straight or branched chain alkane. A method for preparing a methanol additive as claimed in any one of claims 1 to 13, comprising, under normal temperature and pressure, the kinetic accelerator, corrosion inhibitor, methanol calorific value agent, anti-clogging agent, and optional emulsifier Mix to form an intermediate mixture; optionally, then mix the co-solvent and/or modifier with the intermediate mixture. A use of the modified methanol as claimed in any one of claims 14 to 19 as a fuel for an internal combustion engine or a boiler. For the purpose of claim 21, wherein the internal combustion engine is a steam engine, an internal combustion engine of a locomotive, an internal combustion engine of a ship, or an internal combustion engine of a generator.