Highly clean modified methanol fuel

Abstract

The application discloses a kind of high clean modified methanol fuel, including following weight parts of substance: methanol 80-90 parts, polycarbon alcohol 10-15 parts, methylal 0.5-1 part, ferrocene 0.1-0.3 part, ethanolamine 0.01-0.03 part, modified catalyst 6-10 parts, additive 3-5 parts;The application is modified to methanol by methanol-acetone molecular sieve modified catalyst, the phenol content of methanol fuel is made, the fuel of methanol fuel is safer, the stability of methanol fuel is improved, the methanol heat value is improved, and the methanol fuel prepared simultaneously is high in safety, clean and environmentally friendly, and small in pollution.

Description

Technical Field

[0001] This invention relates to the field of methanol fuel technology, specifically to a high-cleanliness modified methanol fuel. Background Technology

[0002] Methanol fuel is cleaner, safer, more efficient, and more widely available, which aligns perfectly with the national strategic development direction of ensuring energy security, and its future prospects are promising.

[0003] Alcohol-ether fuels are among the national industrialization encouraged projects, but there are no national standards, group standards, or enterprise standards, resulting in inconsistent technical levels and market promotion being in its initial stage. Alcohol-hydrocarbon fuels are produced by adding hydrocarbons to methanol to increase the fuel's calorific value, and adding co-solvents to mix the methanol and hydrocarbons. To improve the performance of methanol fuels, modification treatment is required.

[0004] Modified methanol fuel refers to a new type of fuel that uses modified methanol to replace traditional fuels. Modified methanol fuel has advantages such as high energy conversion efficiency and low carbon emissions.

[0005] However, existing methanol fuels have certain toxicity and poor stability, and they are also corrosive to metal surfaces and rubber pads. Summary of the Invention

[0006] The purpose of this invention is to provide a highly clean modified methanol fuel to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-cleanliness modified methanol fuel, comprising the following components by weight: 80-90 parts methanol, 10-15 parts polyols, 0.5-1 parts methyl acetal, 0.1-0.3 parts ferrocene, 0.01-0.03 parts ethanolamine, 6-10 parts modified catalyst, and 3-5 parts additives.

[0008] The modified catalyst is a methanol-acetone molecular sieve modified catalyst.

[0009] The preparation method of the methanol-acetone molecular sieve modified catalyst includes the following steps:

[0010] S1. Using SiO2-Al2O3 molecular sieve as catalyst support, SiO2-Al2O3 molecular sieve is placed in water, and then a hydrolysate is added. While stirring continuously, aluminum nitrate solution, acidic silica sol and deionized water are added.

[0011] S2. After the reaction is complete, the precipitate is separated by centrifugation, washed with deionized water, and dried to obtain the SiO2-Al2O3 support.

[0012] S3. The SiO2-Al2O3 support is mixed with a methanol-acetone mixed solution and subjected to hydrothermal treatment at 110℃ for 24 hours to obtain a methanol-acetone molecular sieve modified catalyst.

[0013] In step S1, the mass ratio of the SiO2-Al2O3 molecular sieve, water, hydrolysant, aluminum nitrate solution, acidic silica sol, and deionized water is 40:100:1:3:3:20.

[0014] In step S1, the concentration of the aluminum nitrate solution is 25% aluminum nitrate solution.

[0015] In step S3, the mass ratio of methanol to acetone in the methanol-acetone mixed solution is 1:1.

[0016] The additives include rubber swelling inhibitors and metal corrosion inhibitors, wherein the mass ratio of the rubber swelling inhibitors to the metal corrosion inhibitors is 1:1.

[0017] The rubber swelling inhibitor is composed of the following components in parts by weight: 12-13 parts of 2-mercaptobenzothiazole, 6-9 parts of iodopropynyl n-butylamine carbamate, 1-2 parts of butylated hydroxyanisole, 15-18 parts of 2,6-di-tert-butyl-p-cresol, 7-10 parts of sodium dodecyl sulfonate, 12-15 parts of 2-ethylimidazole, 6-9 parts of cyclooctadiene ruthenium dichloride, 8-12 parts of p-methoxyphenylacetone, 2-3 parts of polyisobutylene succinimide, 3-4 parts of tert-butyldimethylchlorosilane, and 12-13 parts of methyl tert-butyl ether. This rubber swelling inhibitor uses a rubber swelling inhibitor disclosed in the prior art, specifically patent number "CN104263438B", which discloses a methanol gasoline rubber swelling inhibitor.

[0018] The metal corrosion inhibitor is obtained by mixing and stirring 45-55 parts by weight of ethylene glycol monobutyl ether, 10-15 parts by weight of methacrylate oligomer, and 35-40 parts by weight of polypropylene glycol 2000 at 50-60°C. The methacrylate oligomer is obtained by polymerizing 27-31 parts by weight of methacrylic acid monomer, 10-13 parts by weight of ethyl acrylate monomer, and 1.5-2.5 parts by weight of α-methylstyrene dimer in 55-60 parts by weight of anhydrous ethanol initiated by 0.3-0.5 parts by weight of azobisisobutyronitrile. This metal corrosion inhibitor uses a prior art metal corrosion inhibitor, specifically patent number "CN102286300B", which discloses a metal corrosion inhibitor and its preparation method.

[0019] The method for preparing the modified methanol fuel includes the following steps:

[0020] S1. Weigh out methanol, polyols, methyl acetal, ferrocene, ethanolamine, modified catalyst, and additives by weight.

[0021] S2. Add methanol, polyol, methyl acetal, ferrocene and ethanolamine to the reaction vessel in sequence and mix well;

[0022] S3. Then the modified catalyst is added to the reactor, the reaction temperature is 240℃, and the reaction is carried out for 6 hours under 1MPa conditions.

[0023] S4. Next, the additives are added to the reactor and mixed evenly to obtain modified methanol fuel.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] This invention modifies methanol using a methanol-acetone molecular sieve modification catalyst, reducing the phenol content of methanol fuel, making the methanol fuel safer, improving its stability, increasing its calorific value, and producing methanol fuel that is highly safe, clean, environmentally friendly, and with low pollution.

[0026] This invention prepares an additive by mixing a rubber swelling inhibitor and a metal corrosion inhibitor, which can effectively inhibit the corrosion of automobile engines by methanol fuel. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] A method for preparing a high-cleanliness modified methanol fuel includes the following steps:

[0030] S1. Weigh out 80 parts of methanol, 13 parts of polyol, 0.8 parts of methyl acetal, 0.3 parts of ferrocene, 0.01 parts of ethanolamine, 10 parts of methanol-acetone molecular sieve modified catalyst, 2 parts of rubber swelling inhibitor and 2 parts of metal corrosion inhibitor by weight.

[0031] S2. Add methanol, polyol, methyl acetal, ferrocene and ethanolamine to the reaction vessel in sequence and mix well;

[0032] S3. Then, the methanol-acetone molecular sieve modified catalyst was added to the reactor, and the reaction temperature was 240℃. The reaction was carried out at 1MPa for 6 hours.

[0033] S4. Next, rubber swelling inhibitor and metal corrosion inhibitor are added to the reactor and mixed evenly to obtain modified methanol fuel.

[0034] Example 2

[0035] A method for preparing a high-cleanliness modified methanol fuel includes the following steps:

[0036] S1. Weigh out 85 parts of methanol, 13 parts of polyol, 0.8 parts of methyl acetal, 0.3 parts of ferrocene, 0.01 parts of ethanolamine, 10 parts of methanol-acetone molecular sieve modified catalyst, 2 parts of rubber swelling inhibitor and 2 parts of metal corrosion inhibitor by weight.

[0037] S2. Add methanol, polyol, methyl acetal, ferrocene and ethanolamine to the reaction vessel in sequence and mix well;

[0038] S3. Then, the methanol-acetone molecular sieve modified catalyst was added to the reactor, and the reaction temperature was 240℃. The reaction was carried out at 1MPa for 6 hours.

[0039] S4. Next, rubber swelling inhibitor and metal corrosion inhibitor are added to the reactor and mixed evenly to obtain modified methanol fuel.

[0040] Example 3

[0041] A method for preparing a high-cleanliness modified methanol fuel includes the following steps:

[0042] S1. Weigh out 90 parts of methanol, 13 parts of polyol, 0.8 parts of methyl acetal, 0.3 parts of ferrocene, 0.01 parts of ethanolamine, 10 parts of methanol-acetone molecular sieve modified catalyst, 2 parts of rubber swelling inhibitor and 2 parts of metal corrosion inhibitor by weight.

[0043] S2. Add methanol, polyol, methyl acetal, ferrocene and ethanolamine to the reaction vessel in sequence and mix well;

[0044] S3. Then, the methanol-acetone molecular sieve modified catalyst was added to the reactor, and the reaction temperature was 240℃. The reaction was carried out at 1MPa for 6 hours.

[0045] S4. Next, rubber swelling inhibitor and metal corrosion inhibitor are added to the reactor and mixed evenly to obtain modified methanol fuel.

[0046] Experimental Example

[0047] The modified methanol fuels prepared in Examples 1-3 were analyzed by gas chromatography-mass spectrometry (GC-MS), and the results are shown in the table below:

[0048]

[0049] As shown in the table above, the phenol content in methanol fuel decreased significantly after modification, which means that the modified methanol fuel burns more completely and helps reduce environmental pollution.

[0050] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A high-cleanliness modified methanol fuel, characterized in that... It is composed of the following substances in parts by weight: 80-90 parts methanol, 10-15 parts polyols, 0.5-1 parts methyl acetal, 0.1-0.3 parts ferrocene, 0.01-0.03 parts ethanolamine, 6-10 parts modified catalyst, and 3-5 parts additives. The modified catalyst is a methanol-acetone molecular sieve modified catalyst, and the preparation method of the methanol-acetone molecular sieve modified catalyst includes the following steps: S1. Using SiO2-Al2O3 molecular sieve as catalyst support, SiO2-Al2O3 molecular sieve is placed in water, and then a hydrolysate is added. While stirring continuously, aluminum nitrate solution, acidic silica sol and deionized water are added. S2. After the reaction is complete, the precipitate is separated by centrifugation, washed with deionized water, and dried to obtain the SiO2-Al2O3 support. S3. The SiO2-Al2O3 support was mixed with a methanol-acetone mixed solution and subjected to hydrothermal treatment at 110℃ for 24 hours to obtain a methanol-acetone molecular sieve modified catalyst. The additives include rubber swelling inhibitors and metal corrosion inhibitors, wherein the mass ratio of the rubber swelling inhibitors to the metal corrosion inhibitors is 1:

1. The rubber swelling inhibitor is composed of the following components in parts by weight: 12-13 parts of 2-mercaptobenzothiazole, 6-9 parts of iodopropynyl n-butylamine carbamate, 1-2 parts of butylated hydroxyanisole, 15-18 parts of 2,6-di-tert-butyl-p-cresol, 7-10 parts of sodium dodecyl sulfonate, 12-15 parts of 2-ethylimidazole, 6-9 parts of cyclooctadiene ruthenium dichloride, 8-12 parts of p-methoxyacetone, 2-3 parts of polyisobutylene succinimide, 3-4 parts of tert-butyldimethylchlorosilane, and 12-13 parts of methyl tert-butyl ether. The metal corrosion inhibitor is obtained by mixing and stirring 45-55 parts by weight of ethylene glycol monobutyl ether, 10-15 parts by weight of methacrylate oligomer, and 35-40 parts by weight of polypropylene glycol 2000 at 50-60°C. The methacrylate oligomer is obtained by polymerizing 27-31 parts by weight of methacrylic acid monomer, 10-13 parts by weight of ethyl acrylate monomer, and 1.5-2.5 parts by weight of α-methylstyrene dimer in 55-60 parts by weight of anhydrous ethanol initiated by 0.3-0.5 parts by weight of azobisisobutyronitrile. The method for preparing the modified methanol fuel includes the following steps: S1. Weigh out methanol, polyols, methyl acetal, ferrocene, ethanolamine, modified catalyst, and additives by weight. S2. Add methanol, polyol, methyl acetal, ferrocene and ethanolamine to the reaction vessel in sequence and mix well; S3. Then the modified catalyst is added to the reactor, the reaction temperature is 240℃, and the reaction is carried out for 6 hours under 1MPa conditions. S4. Next, the additives are added to the reactor and mixed evenly to obtain modified methanol fuel.

2. The high-cleanliness modified methanol fuel according to claim 1, characterized in that: In step S1, the mass ratio of the SiO2-Al2O3 molecular sieve, water, hydrolyzing agent, aluminum nitrate solution, acidic silica sol, and deionized water is 40:100:1:3:3:

20.

3. The high-cleanliness modified methanol fuel according to claim 1, characterized in that: In step S1, the concentration of the aluminum nitrate solution is 25% aluminum nitrate solution.

4. The high-cleanliness modified methanol fuel according to claim 1, characterized in that: In step S3, the mass ratio of methanol to acetone in the methanol-acetone mixed solution is 1:1.

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