CN110564461A

CN110564461A - Methanol gasoline

Info

Publication number: CN110564461A
Application number: CN201910885048.8A
Authority: CN
Inventors: 杨啟华
Original assignee: Hubei Qinghe New Energy Technology Co Ltd
Current assignee: Hubei Qinghe New Energy Technology Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2019-12-13

Abstract

The invention provides methanol gasoline which comprises the following components in parts by weight: 26-28 parts of methanol, 55-70 parts of base oil, 2-3 parts of corrosion inhibitor, 1-2 parts of antifriction lubricant, 1-2 parts of mixed surfactant, 1-8 parts of mixed solvent, 0.1-2 parts of oxidant, 3-4 parts of methanol gasoline heat value improver and 1-2 parts of octane number improver; the methanol gasoline provided by the invention has high octane number, stable combustion and sufficient power, has no corrosion and swelling reaction on the materials of the existing gasoline vehicle, and can be used on the premise of not changing the engine and the oil supply system of the existing gasoline vehicle; the methanol gasoline provided by the invention can effectively save the fuel cost of an automobile, can also clean dirt and carbon deposition of an oil way and an air cylinder, protects the running of an engine and prolongs the service life of the automobile; high efficiency, fuel saving, economy and energy saving.

Description

methanol gasoline

Technical Field

The invention belongs to the field of fuel chemical industry, and particularly relates to methanol gasoline.

background

The petroleum energy crisis is one of the problems facing the world today. With the rapid development of domestic economy, the demand for energy also increases dramatically. However, petroleum fuels in China are deficient, so that the development of alternative energy sources capable of replacing petroleum fuels is the need and the requirement of the energy development strategy of China at present.

The methanol gasoline is a vehicle fuel prepared by adding methanol in a certain proportion into national standard unleaded gasoline for vehicles according to volume or weight ratio and mixing. In technical terms, currently, methanol gasoline in the world faces four major problems: "difficult start at low temperature, high temperature air resistance, water stratification, rubber swelling"; becoming a bottleneck restricting the healthy development of the methanol gasoline.

the methanol gasoline has high octane number, is clean and environment-friendly, has good combustibility, is the best alternative energy of gasoline, and still has the technical problems of small substitution proportion, poor stability, metal corrosion and the like. Among them, substitution ratio and stability are critical issues; it includes the compatibility of methanol and gasoline; water resistance, low temperature stability and the like. The effective solution is an auxiliary agent with good selectivity, and is the key for methanol gasoline research.

meanwhile, the methanol gasoline solves the problems of oxidation, generation of acidic substances, generation of viscosity, colloid, metal corrosion, RON reduction, serious carbon deposition, poor ignition and increased oil consumption.

aiming at the situation, the invention provides the methanol gasoline, which solves the problem of compatibility of methanol and gasoline, and has the advantages of sufficient combustion and good anti-knock performance.

Disclosure of Invention

In a first aspect, the present invention provides a methanol gasoline having a composition comprising:

26-28 parts of methanol, 55-70 parts of base oil, 2-3 parts of corrosion inhibitor, 1-2 parts of antifriction lubricant, 1-2 parts of mixed surfactant, 1-8 parts of mixed solvent, 0.1-2 parts of oxidant, 3-4 parts of methanol gasoline heat value improver and 1-2 parts of octane number improver;

Wherein the mixed surfactant comprises a surfactant containing a mercapto group.

As an embodiment of the present invention, the methanol gasoline component comprises:

26.5 parts of methanol, 63 parts of base oil, 2.5 parts of corrosion inhibitor, 1 part of antifriction lubricant, 2 parts of mixed surfactant, 5 parts of mixed solvent, 1.2 parts of oxidant, 3.5 parts of methanol gasoline heat value improver and 1.5 parts of octane number improver;

as an embodiment of the present invention, the mixed surfactant further comprises a nonionic surfactant.

In one embodiment of the present invention, the corrosion inhibitor is an aromatic ring containing N element and S element.

As an embodiment of the present invention, the corrosion inhibitor is mercaptobenzothiazole and/or benzotriazole.

As an embodiment of the invention, the methanol gasoline heat value improver is a compound of an alcohol compound and an aldehyde compound.

in one embodiment of the present invention, the alcohol compound is a mixture of monohydric alcohol and dihydric alcohol.

In one embodiment of the present invention, the octane improver is a mixture of an aromatic ring and a cycloalkane.

As an embodiment of the present invention, the base oil comprises: no. 93 gasoline, No. 120 solvent oil and industrial petroleum ether.

According to the second aspect, the invention provides a preparation method of the methanol gasoline, which comprises the steps of pumping methanol into a reaction kettle with a speed reduction stirrer by using an oil pump according to the parts by weight, and then adding a corrosion inhibitor, an antifriction lubricant, a mixed surfactant, a mixed solvent, an oxidant, a methanol gasoline heat value improver and an octane number improver; and adding the base oil, starting the stirrer, controlling the rotating speed of the stirrer at 200 revolutions per minute, stirring for 30-60 minutes, and then pumping into a finished product tank, and standing for 24 hours to obtain the methanol gasoline.

has the advantages that:

The methanol gasoline provided by the invention has high octane number, stable combustion and sufficient power, has no corrosion and swelling reaction on the materials of the existing gasoline vehicle, and can be used on the premise of not changing the engine and the oil supply system of the existing gasoline vehicle;

the methanol gasoline provided by the invention can effectively save the fuel cost of an automobile, can also clean dirt and carbon deposition of an oil way and an air cylinder, protects the running of an engine and prolongs the service life of the automobile; high efficiency, fuel saving, economy and energy saving.

Detailed Description

The invention will be further understood by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. To the extent that a definition of a particular term disclosed in the prior art is inconsistent with any definitions provided herein, the definition of the term provided herein controls.

as used herein, a feature that does not define a singular or plural form is also intended to include a plural form of the feature unless the context clearly indicates otherwise. It will be further understood that the term "prepared from …," as used herein, is synonymous with "comprising," including, "comprising," "having," "including," and/or "containing," when used in this specification means that the recited composition, step, method, article, or device is present, but does not preclude the presence or addition of one or more other compositions, steps, methods, articles, or devices. Furthermore, the use of "preferred," "preferably," "more preferred," etc., when describing embodiments of the present application, is meant to refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. In addition, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

methanol

in the invention, the methanol is common methanol, and the CAS number is 67-56-1; the molecular weight is 32.04186; purchased from the national drug group.

Base oil

In the invention, the base oil comprises No. 93 gasoline, No. 120 solvent oil and industrial petroleum ether; the weight ratio is 1:2:1.

Corrosion inhibitor

in a preferred embodiment of the present invention, the corrosion inhibitor is benzotriazole.

Antifriction lubricant

in the invention, the antifriction lubricant is an inorganic substance; more preferably sodium chloride.

Mixed surfactants

In the invention, the mixed surfactant is a mixture of surfactants; as an embodiment of the present invention, the mixed surfactant comprises a mercapto group-containing surfactant.

the nonionic surfactant is a mixture of sorbitol ester nonionic surfactant and polyoxyethylene ether nonionic surfactant; wherein the polyoxyethylene ether nonionic surfactant is fatty alcohol polyoxyethylene ether or alkylphenol polyoxyethylene ether.

as a preferable mode of the invention, the sorbitol ester type nonionic surfactant is Span-85 or Span-65; the fatty alcohol-polyoxyethylene ether is selected from AEO-3, AEO-4, AEO-5 or AEO-7; the alkylphenol polyoxyethylene is selected from OP-3, OP-4, OP-6 or OP-7.

In a preferred embodiment of the present invention, the mercapto group-containing surfactant is a gemini surfactant.

the gemini surfactant is prepared from the following raw materials: aspartic acid derivatives and N, N' -bis (2-mercaptoethyl) -1, 2-cyclobutane bis (methylamine).

The preparation method of the aspartic acid derivative comprises the following steps:

S01: 40mL of acetone, 4mL of water and 10mmol of aspartic acid are added into a stirred 100mL three-necked flask, an appropriate amount of triethylamine is added, the pH value is adjusted to 8-9, 11mmol of di-tert-butyl dicarbonate is slowly dropped at 0 ℃, and the reaction is continued for 2 hours. Distilling the reaction mixed solution under reduced pressure to remove acetone, extracting the residual solution with ethyl acetate for three times, adjusting the pH of the water phase to 2-3 with 1mol/L hydrochloric acid in an ice bath, washing with ethyl acetate for three times, combining organic layers, washing with saturated saline for 2 times, and then drying with anhydrous sodium sulfate; reduced pressure distillation and recrystallization of n-hexane. Freeze drying to obtain white powdery aspartic acid derivative.

the preparation method of the gemini surfactant comprises the following steps:

7.5mmol of aspartic acid derivative, 15mmol of N, N' -dicyclohexylcarbodiimide and 15mmol of N-hydroxysuccinimide are added into a 250mol three-necked flask containing 100mL of dichloromethane, stirred for 2h in ice bath and stirred for 10-12h at room temperature. After the reaction, the white precipitate was removed by filtration, distilled and the solid was washed with ethanol. Vacuum filtering, and freeze drying to obtain white powdered activated ester of aspartic acid derivative. 1g of activated ester and 2mol of N, N' -bis (2-mercaptoethyl) -1, 2-cyclobutane-bis (methylamine) are added into a 250mL three-necked bottle containing 90mL of acetone, a proper amount of triethylamine is added dropwise to adjust the solution to be slightly alkaline, and the mixture is stirred and reacted for 48 hours at the temperature of 30 ℃. And carrying out vacuum filtration on the reaction mixed liquid, distilling to remove the solvent, and washing with n-hexane and acetonitrile respectively. Freeze drying to obtain the gemini surfactant.

in the present invention, the mixed surfactant comprises 5 weight ratio of the gemini surfactant and 1 weight ratio of the nonionic surfactant Span-85 in terms of weight ratio.

mixed solvent

In the invention, the mixed solvent is selected from one or more of toluene, xylene, isopropanol, ethanol, N-octanol, N-disalicylidene-1, 2-propanediamine, dichloropropane, glycerol, isobutanol and butanol.

from the perspective of solving the high-temperature air resistance of the product, the mixed solvent is a mixed solvent of isopropanol, dichloropropane and isobutanol; and the volume ratio of the three is 1:2: 3.

Oxidizing agent

in the invention, the oxidant is any one or more of nitrobenzene, nitromethane, nitroethane, peracetic acid, performic acid or benzoyl peroxide.

As an embodiment of the present invention, the oxidizing agent is performic acid.

Methanol gasoline heat value improver

In the invention, the methanol gasoline heat value improver is a compound of an alcohol compound and an aldehyde compound; the alcohol compound is a mixture of monohydric alcohol and dihydric alcohol.

As one embodiment of the invention, the methanol gasoline heat value improver is a mixture of diethanolamine, hexanol and benzaldehyde, and the ratio of the diethanolamine to the hexanol to the benzaldehyde is 2.1:2: 1.2.

octane number improver

in the invention, the octane number improver is a mixture of aromatic rings and naphthenic hydrocarbons; as an embodiment of the present invention, the octane improver is a mixture of toluene and cyclopentane; and the mass ratio of the two is 1: 1.

the mechanism is explained as follows: the methanol gasoline provided by the invention has good stability and is not easy to layer; meanwhile, the methanol gasoline provided by the invention can also slow down the phenomenon of high-temperature air resistance; the mixed surfactant provided by the invention can wrap hydrophilic substances such as methanol and the like, and stably exists in the base oil like a tadpole shape; meanwhile, when the temperature rises, the surfactant is slightly opened, so that the release of the methanol can be slowed; and when the surfactant is turned off, the surfactant can absorb new hydrophilic substances, so that the surfactant can absorb some water, and the phenomenon of layering in water is relieved.

The present invention will be described in detail with reference to specific examples.

Example 1:

The embodiment provides a methanol gasoline, which comprises the following components:

26 parts of methanol, 55 parts of base oil, 2 parts of corrosion inhibitor, 1 part of antifriction lubricant, 1 part of mixed surfactant, 1 part of mixed solvent, 0.1 part of oxidant, 3 parts of methanol gasoline heat value improver and 1 part of octane number improver;

the methanol has CAS number 67-56-1 and is purchased from national groups.

In this example, the base oil comprises gasoline No. 93, mineral spirits No. 120, and industrial petroleum ether; the weight ratio is 1:2:1.

in this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is sodium chloride.

in this embodiment, the mixed surfactant is the gemini surfactant and the nonionic surfactant Span-85; the weight ratio of the two is 5: 1.

The preparation method of the gemini surfactant comprises the following steps:

In this embodiment, the mixed solvent is a mixed solvent of isopropanol, dichloropropane and isobutanol; and the volume ratio of the three is 1:2: 3.

in this embodiment, the oxidizing agent is performic acid.

in this embodiment, the methanol gasoline calorific value improver is a mixture of diethanolamine, hexanol and benzaldehyde, and the ratio of the diethanolamine, the hexanol and the benzaldehyde is 2.1:2: 1.2.

In this example, the octane improver was a mixture of toluene and cyclopentane; and the mass ratio of the two is 1: 1.

Example 2:

28 parts of methanol, 70 parts of base oil, 3 parts of corrosion inhibitor, 2 parts of antifriction lubricant, 2 parts of mixed surfactant, 8 parts of mixed solvent, 2 parts of oxidant, 4 parts of methanol gasoline heat value improver and 2 parts of octane number improver;

The methanol has CAS number 67-56-1 and is purchased from national groups.

In this embodiment, the corrosion inhibitor is benzotriazole.

in this embodiment, the antifriction lubricant is sodium chloride.

the preparation method of the gemini surfactant comprises the following steps:

In this embodiment, the oxidizing agent is performic acid.

Example 3:

The methanol has CAS number 67-56-1 and is purchased from national groups.

in this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is sodium chloride.

the preparation method of the gemini surfactant comprises the following steps:

In this embodiment, the oxidizing agent is performic acid.

Example 4:

The methanol has CAS number 67-56-1 and is purchased from national groups.

In this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is sodium chloride.

In this embodiment, the mixed surfactant is a nonionic surfactant Span-85.

in this embodiment, the oxidizing agent is performic acid.

example 5:

The methanol has CAS number 67-56-1 and is purchased from national groups.

in this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is sodium chloride.

In this embodiment, the mixed surfactant is a nonionic surfactant Span-85 and alkylphenol ethoxylates OP-7.

in this embodiment, the oxidizing agent is performic acid.

Example 6:

26.5 parts of methanol, 63 parts of base oil, 2.5 parts of corrosion inhibitor, 1 part of antifriction lubricant, 5 parts of mixed solvent, 1.2 parts of oxidant, 3.5 parts of methanol gasoline heat value improver and 1.5 parts of octane number improver;

The methanol has CAS number 67-56-1 and is purchased from national groups.

In this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is sodium chloride.

In this embodiment, the oxidizing agent is performic acid.

Example 7:

26.5 parts of methanol, 63 parts of base oil, 2.5 parts of corrosion inhibitor, 1 part of antifriction lubricant, 0.1 part of mixed surfactant, 5 parts of mixed solvent, 1.2 parts of oxidant, 3.5 parts of methanol gasoline heat value improver and 1.5 parts of octane number improver;

The methanol has CAS number 67-56-1 and is purchased from national groups.

in this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is sodium chloride.

the preparation method of the gemini surfactant comprises the following steps:

in this embodiment, the oxidizing agent is performic acid.

Example 8:

26.5 parts of methanol, 63 parts of base oil, 2.5 parts of corrosion inhibitor, 1 part of antifriction lubricant, 2.5 parts of mixed surfactant, 5 parts of mixed solvent, 1.2 parts of oxidant, 3.5 parts of methanol gasoline heat value improver and 1.5 parts of octane number improver;

the methanol has CAS number 67-56-1 and is purchased from national groups.

In this embodiment, the corrosion inhibitor is benzotriazole.

in this embodiment, the antifriction lubricant is sodium chloride.

the preparation method of the gemini surfactant comprises the following steps:

In this embodiment, the oxidizing agent is performic acid.

example 9:

the methanol has CAS number 67-56-1 and is purchased from national groups.

in this embodiment, the corrosion inhibitor is benzotriazole.

In this embodiment, the antifriction lubricant is potassium chloride.

the preparation method of the gemini surfactant comprises the following steps:

In this embodiment, the oxidizing agent is performic acid.

example 10:

The methanol has CAS number 67-56-1 and is purchased from national groups.

In this embodiment, the corrosion inhibitor is benzotriazole.

in this embodiment, the antifriction lubricant is sodium chloride.

The gemini surfactant is prepared from the following raw materials: aspartic acid derivatives and N-octyl glucitol.

The preparation method of the gemini surfactant comprises the following steps:

7.5mmol of aspartic acid derivative, 15mmol of N, N' -dicyclohexylcarbodiimide and 15mmol of N-hydroxysuccinimide are added into a 250mol three-necked flask containing 100mL of dichloromethane, stirred for 2h in ice bath and stirred for 10-12h at room temperature. After the reaction, the white precipitate was removed by filtration, distilled and the solid was washed with ethanol. Vacuum filtering, and freeze drying to obtain white powdered activated ester of aspartic acid derivative. 1g of activated ester and 2mol of N-n-octyl glucitol are added into a 250mL three-necked bottle containing 90mL of acetone, a proper amount of triethylamine is added dropwise to adjust the solution to be slightly alkaline, and the mixture is stirred and reacted for 48 hours at the temperature of 30 ℃. And carrying out vacuum filtration on the reaction mixed liquid, distilling to remove the solvent, and washing with n-hexane and acetonitrile respectively. Freeze drying to obtain the gemini surfactant.

In this embodiment, the oxidizing agent is performic acid.

In a second aspect, in the method for preparing methanol gasoline in the above embodiment, according to the parts by weight, methanol is pumped into a reaction kettle with a speed reduction stirrer by an oil pump, and then a corrosion inhibitor, an antifriction lubricant, a mixed surfactant (if any), a mixed solvent, an oxidant, a methanol gasoline heat value improver and an octane number improver are added; and adding the base oil, starting the stirrer, controlling the rotating speed of the stirrer at 200 revolutions per minute, stirring for 30-60 minutes, and then pumping into a finished product tank, and standing for 24 hours to obtain the methanol gasoline.

performance testing

1. the performance test comprises the following steps: the methanol gasolines of examples 1 to 10 were observed for delamination at room temperature (22 ℃ C.) and low temperature (-25 ℃ C.), respectively, and tested for time (days) of steady state.

2.1. And (5) performance test II: water resistance to separation (0.7 wt% of water was added to the methanol gasoline of examples 1 to 10, shaken up and down for 5min, frequency was up and down 5 times/s, and then left to stand for 48 hours.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The methanol gasoline is characterized by comprising the following components in parts by weight:

2. The methanol gasoline of claim 1, characterized in that its components comprise:

3. The methanol gasoline of claim 1 or 2, characterized in that the mixed surfactant further comprises a nonionic surfactant.

4. The methanol gasoline of claim 1 or 2, wherein the corrosion inhibitor is an aromatic ring containing N element and S element.

5. The methanol gasoline of claim 4, wherein the corrosion inhibitor is mercaptobenzothiazole and/or benzotriazole.

6. The methanol gasoline of claim 1 or 2, wherein the methanol gasoline heat value improver is a composite of an alcohol compound and an aldehyde compound.

7. The methanol gasoline of claim 6, wherein the alcohol compound is a mixture of a monohydric alcohol and a dihydric alcohol.

8. the methanol gasoline of claim 1 or 2, characterized in that the octane improver is a mixture of aromatic rings and cycloalkanes.

9. The methanol gasoline of claim 1 or 2, wherein the base oil comprises: gasoline No. 93, solvent oil No. 120 and industrial petroleum ether.

10. A method for producing methanol gasoline according to any one of claims 1 to 9, characterized in that: the method comprises the following steps: according to the weight parts, pumping methanol into a reaction kettle with a speed reduction stirrer by an oil pump, and then adding a corrosion inhibitor, an antifriction lubricant, a mixed surfactant, a mixed solvent, an oxidant, a methanol gasoline heat value improver and an octane number improver; and adding the base oil, starting the stirrer, controlling the rotating speed of the stirrer at 200 revolutions per minute, stirring for 30-60 minutes, and then pumping into a finished product tank, and standing for 24 hours to obtain the methanol gasoline.