Blending method of high-cleanness modified methanol fuel

Abstract

The invention discloses a blending method of high-cleanliness modified methanol fuel. The high-cleanliness modified methanol fuel is prepared from the following substances in parts by weight: 80-90 parts of methanol, 8-15 parts of an energizer, 5-8 parts of a rubber and plastic anti-swelling agent, 5-8 parts of a metal corrosion inhibitor, 5-8 parts of a calorific value agent and 3-5 parts of an additive. Natural combustion of methanol can be converted into catalytic combustion, so that combustion is more sufficient and higher in efficiency, oil consumption is reduced, power is increased, emission of tail gas pollutants (CO, NOx and HC) is obviously reduced, corrosion to automobile metal and rubber products is reduced, and the swelling problem of a rubber mat is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of methanol fuel, and specifically provides a preparation method for a highly clean modified methanol fuel. Background Art

[0002] Methanol fuel is produced by using industrial methanol or fuel methanol, adding a denatured alcohol additive, and using high-quality anthracite or carbide slag as the main raw material through a chemical reaction. It can improve the comprehensive utilization of resources, reduce environmental pollution, and also alleviate the energy shortage situation in China and improve the comprehensive utilization of resources. Methanol fuel can be used as an additive for fuel vehicles or as a vehicle fuel alone;

[0003] Currently, methanol used as a vehicle fuel has the following disadvantages: 1. Methanol fuel burns incompletely and pollutant emissions exceed the standard; 2. Methanol has a low heat point, insufficient power, and is prone to carbon deposition; 3. Methanol severely corrodes automotive metals and rubber products, especially having a swelling effect on rubber gaskets; 4. Methanol fuel has problems of high-temperature vapor lock and difficult cold start at low temperatures, and there are also problems of low-temperature stratification and emulsification stratification; 5. Methanol has poor lubricity, increasing engine wear and friction;

[0004] In view of the disadvantages of methanol as a vehicle fuel, it is necessary to modify methanol fuel. Modified methanol fuel is obtained by modifying methanol through modification technology. On the basis of fully maintaining the advantages of good combustion performance and low carbon emissions of methanol, its disadvantages such as poor corrosiveness, swelling property, and practicability are modified by using physical means, so that it can be similar in physical and chemical properties to gasoline and diesel, and can be synchronously coupled with gasoline and diesel for combustion in the cylinder block. Thus, it can truly be mixed with gasoline and diesel in any proportion or used alone without modifying the engine. And it has the characteristics of extremely low carbon emissions, good economy, and strong usability.

[0005] However, the existing modified methanol fuel does not comprehensively solve many problems existing in methanol fuel, such as poor stability, weak anti-knock performance, easy engine wear, engine corrosion, and low-temperature fluidity. Therefore, there is an urgent need to provide a preparation method for a highly clean modified methanol fuel. Summary of the Invention

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

[0007] To achieve the above purpose, the present invention provides the following technical solution: A preparation method for a highly clean modified methanol fuel is composed of the following substances in parts by weight: 80 - 90 parts of methanol, 8 - 15 parts of energy enhancer, 5 - 8 parts of rubber and plastic anti-swelling agent, 5 - 8 parts of metal anti-corrosion agent, 5 - 8 parts of calorific value agent, and 3 - 5 parts of additive.

[0008] Among them, the energy enhancer is composed of the following substances by weight percentage: myristic acid 10-15%, N-methylaniline 2-5%, succinimide 2-5%, trinitrotoluene 1-3%, and the balance is beeswax.

[0009] Among them, the preparation method of the energy enhancer includes the following steps:

[0010] Step 1: Weigh myristic acid 1, N-methylaniline, succinimide, trinitrotoluene, and beeswax respectively according to the weight percentage, and then add myristic acid 1, N-methylaniline, succinimide, and trinitrotoluene into the reaction kettle and react for 25-30 minutes;

[0011] Step 2: Then add beeswax into the reaction kettle and mix evenly to obtain the energy enhancer.

[0012] Among them, the rubber and plastic anti-swelling agent is composed of the following substances by weight percentage: petroleum ether 20%, isopropanol 20%, isomeric alcohol polyoxyethylene ether 20%, perfluorooctyl ethylene 20%, and propylene glycol methyl ether 20%.

[0013] Among them, the preparation method of the rubber and plastic anti-swelling agent includes the following steps.

[0014] Step 1: Weigh petroleum ether, isopropanol, isomeric alcohol polyoxyethylene ether, perfluorooctyl ethylene, and propylene glycol methyl ether respectively according to the weight percentage, mix petroleum ether and isopropanol, and then use an ultrasonic disperser to ultrasonically disperse for 30-35 minutes at 45-50 °C to obtain liquid A;

[0015] Step 2: Mix isomeric alcohol polyoxyethylene ether and perfluorooctyl ethylene, and then use an ultrasonic disperser to ultrasonically disperse for 20-25 minutes at 45-50 °C to obtain liquid B;

[0016] Step 3: Mix liquid A, liquid B and propylene glycol methyl ether together and stir with a magnetic stirrer for 25-30 minutes at 55-60 °C to obtain the rubber and plastic anti-swelling agent.

[0017] Among them, the metal anti-corrosion agent is prepared by mixing benzotriazole, mercaptobenzothiazole, methylbenzotriazole, silicone, and N,N-disuccinylsalicylic acid-1,2-propanediamine according to a weight ratio of 3:1:1:1:1.

[0018] Among them, the calorific value agent is prepared by mixing a 20% naphthalene ethanol solution, cumene, methylcyclohexane, and trifluorotoluene according to a weight ratio of 1:1:1:1.

[0019] Among them, the additive includes an anti-wear agent, and the anti-wear agent is isobutene sulfide.

[0020] Among them, the isobutene sulfide is prepared by using isobutene as a raw material, first sulfiding with sulfur chloride, then dechlorinating and sulfiding with sodium sulfide, and refining with alkali.

[0021] Among them, the blending method includes the following steps:

[0022] S1. Weigh methanol, energy enhancer, rubber and plastic anti-swelling agent, metal anti-corrosion agent, calorific value agent, and additive by weight respectively;

[0023] S2. Add methanol, rubber and plastic anti-swelling agent, and metal anti-corrosion agent into the reaction kettle in sequence and mix evenly;

[0024] S3. Then add the energy enhancer and calorific value agent into the reaction kettle, the reaction temperature is 240 °C, and react for 6 hours under the condition of 1 MPa;

[0025] S4. Then add the additive into the reaction kettle and mix evenly to obtain a high-clean modified methanol fuel.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] The present invention can convert the natural combustion of methanol into catalytic combustion, making the combustion more complete and efficient, resulting in reduced fuel consumption, increased power, significantly reduced emissions of tail gas pollutants (CO, NOx, and HC), and reduced corrosion of automotive metal and rubber products, overcoming the problem of swelling of rubber gaskets. Specific Embodiments

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Example 1

[0030] A blending method of a high-clean modified methanol fuel is composed of the following substances in parts by weight: 80 parts of methanol, 8 parts of energy enhancer, 6 parts of rubber and plastic anti-swelling agent, 6 parts of metal anti-corrosion agent, 6 parts of calorific value agent, and 4 parts of additive.

[0031] Among them, the energy enhancer is composed of the following substances in weight percentages: 10-15% of myristic acid, 2-5% of N-methylaniline, 2-5% of succinimide, 1-3% of trinitrotoluene, and the balance of beeswax.

[0032] Among them, the rubber and plastic anti-swelling agent is composed of the following substances in weight percentages: 20% of petroleum ether, 20% of isopropanol, 20% of isomeric alcohol polyoxyethylene ether, 20% of perfluorooctylethylene, and 20% of propylene glycol methyl ether.

[0033] Among them, the metal corrosion inhibitor is prepared by mixing benzotriazole, mercaptobenzothiazole, methylbenzotriazole, silicone, and N,N-disalicylidene-1,2-propanediamine according to a weight ratio of 3:1:1:1:1.

[0034] Among them, the calorific value agent is prepared by mixing a 20% naphthalene ethanol solution, isopropylbenzene, methylcyclohexane, and trifluorotoluene according to a weight ratio of 1:1:1:1.

[0035] Among them, the additive includes an anti-wear agent, and the anti-wear agent is isobutene sulfide.

[0036] The preparation method of the high-clean modified methanol fuel includes the following steps:

[0037] S1. Weigh methanol, energy enhancer, rubber and plastic anti-swelling agent, metal corrosion inhibitor, calorific value agent, and additive by weight respectively;

[0038] S2. Add methanol, rubber and plastic anti-swelling agent, and metal corrosion inhibitor into the reaction kettle in sequence and mix evenly;

[0039] S3. Then add the energy enhancer and calorific value agent into the reaction kettle, the reaction temperature is 240 °C, and react for 6 hours under the condition of 1 MPa;

[0040] S4. Then add the additive into the reaction kettle and mix evenly to obtain the high-clean modified methanol fuel.

[0041] Example 2

[0042] A preparation method of a high-clean modified methanol fuel consists of the following substances in parts by weight: 80 parts of methanol, 15 parts of energy enhancer, 6 parts of rubber and plastic anti-swelling agent, 6 parts of metal corrosion inhibitor, 6 parts of calorific value agent, and 4 parts of additive.

[0043] Among them, the energy enhancer consists of the following substances in weight percentages: 10-15% of myristic acid, 2-5% of N-methylaniline, 2-5% of succinimide, 1-3% of trinitrotoluene, and the balance of beeswax.

[0044] Among them, the rubber and plastic anti-swelling agent consists of the following substances in weight percentages: 20% of petroleum ether, 20% of isopropanol, 20% of isomeric alcohol polyoxyethylene ether, 20% of perfluorooctylethylene, and 20% of propylene glycol methyl ether.

[0045] Among them, the metal corrosion inhibitor is prepared by mixing benzotriazole, mercaptobenzothiazole, methylbenzotriazole, silicone, and N,N-disalicylidene-1,2-propanediamine according to a weight ratio of 3:1:1:1:1.

[0046] Among them, the calorific value agent is prepared by mixing 20% naphthalene ethanol solution, isopropylbenzene, methylcyclohexane, and trifluorotoluene in a weight ratio of 1:1:1:1.

[0047] Among them, the additive includes an anti-wear agent, and the anti-wear agent is isobutene sulfide.

[0048] The preparation method of the high-clean modified methanol fuel includes the following steps:

[0049] S1. Weigh methanol, energy enhancer, rubber and plastic anti-swelling agent, metal anti-corrosion agent, calorific value agent, and additive by weight respectively;

[0050] S2. Add methanol, rubber and plastic anti-swelling agent, and metal anti-corrosion agent into the reaction kettle in sequence and mix evenly;

[0051] S3. Then add the energy enhancer and calorific value agent into the reaction kettle, the reaction temperature is 240 °C, and react for 6 hours under the condition of 1 MPa;

[0052] S4. Then add the additive into the reaction kettle and mix evenly to obtain the high-clean modified methanol fuel.

[0053] Example 3

[0054] A preparation method of a high-clean modified methanol fuel consists of the following substances in parts by weight: 90 parts of methanol, 15 parts of energy enhancer, 6 parts of rubber and plastic anti-swelling agent, 6 parts of metal anti-corrosion agent, 6 parts of calorific value agent, and 4 parts of additive.

[0055] Among them, the energy enhancer consists of the following substances in weight percentages: 10-15% of myristic acid, 2-5% of N-methylaniline, 2-5% of succinimide, 1-3% of trinitrotoluene, and the balance of beeswax.

[0056] Among them, the rubber and plastic anti-swelling agent consists of the following substances in weight percentages: 20% of petroleum ether, 20% of isopropanol, 20% of isomeric alcohol polyoxyethylene ether, 20% of perfluorooctylethylene, and 20% of propylene glycol methyl ether.

[0057] Among them, the metal anti-corrosion agent is prepared by mixing benzotriazole, mercaptobenzothiazole, methylbenzotriazole, silicone, and N,N-disalicylidene-1,2-propanediamine in a weight ratio of 3:1:1:1:1.

[0058] Among them, the calorific value agent is prepared by mixing 20% naphthalene ethanol solution, isopropylbenzene, methylcyclohexane, and trifluorotoluene in a weight ratio of 1:1:1:1.

[0059] Among them, the additive includes an anti-wear agent, and the anti-wear agent is isobutene sulfide.

[0060] The preparation method of the high-clean modified methanol fuel includes the following steps:

[0061] S1. Weigh methanol, energy enhancer, rubber and plastic anti-swelling agent, metal anti-corrosion agent, calorific value agent, and additive by weight respectively;

[0062] S2. Add methanol, rubber and plastic anti-swelling agent, and metal anti-corrosion agent into the reaction kettle in sequence and mix evenly;

[0063] S3. Then add the energy enhancer and calorific value agent into the reaction kettle. The reaction temperature is 240 °C, and the reaction is carried out for 6 hours under the condition of 1 MPa;

[0064] S4. Then add the additive into the reaction kettle and mix evenly to obtain a highly clean modified methanol fuel.

[0065] Experimental Example

[0066] The methanol fuel prepared by the above Examples 1-3 was subjected to a copper strip corrosion immersion test together with the methanol fuel that was not treated alone. The results are shown in Table 1 below:

[0067] Table 1 Comparison results of copper strip corrosion immersion test of methanol fuel

[0068] Group Example 1 Example 2 Example 3 Untreated methanol fuel 2 months The copper sheet shows no abnormality The copper sheet shows no abnormality The copper sheet shows no abnormality The color of the copper sheet changes, slightly discolored 6 months The copper sheet shows no abnormality The copper sheet shows no abnormality The copper sheet shows no abnormality The color of the copper sheet changes significantly, moderately discolored

[0069] As can be seen from the above table, the highly clean modified methanol fuel prepared by the present invention has good anti-corrosion effect and the function of compounding and synergizing.

[0070] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to enumerate all the embodiments here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A preparation method of a highly clean modified methanol fuel, characterized in that , it is composed of the following substances in parts by weight: 80 - 90 parts of methanol, 8 - 15 parts of energy enhancer, 5 - 8 parts of rubber and plastic anti-swelling agent, 5 - 8 parts of metal anti-corrosion agent, 5 - 8 parts of calorific value agent, and 3 - 5 parts of additive.

2. The preparation method of a highly clean modified methanol fuel according to claim 1, characterized in that: The energy enhancer is composed of the following substances in weight percentages: 10 - 15% of myristic acid, 2 - 5% of N-methylaniline, 2 - 5% of succinimide, 1 - 3% of trinitrotoluene, and the balance of beeswax.

3. The preparation method of a highly clean modified methanol fuel according to claim 2, characterized in that: The preparation method of the energy enhancer includes the following steps: Step 1, weigh myristic acid 1, N-methylaniline, succinimide, trinitrotoluene and beeswax respectively according to weight percentages, then add myristic acid 1, N-methylaniline, succinimide, trinitrotoluene into the reaction kettle and react for 25 - 30 minutes; Step 2, then add beeswax into the reaction kettle and mix evenly to obtain the energy enhancer.

4. The preparation method of a highly clean modified methanol fuel according to claim 1, characterized in that: The rubber and plastic anti-swelling agent is composed of the following substances in weight percentages: 20% of petroleum ether, 20% of isopropanol, 20% of isomeric alcohol polyoxyethylene ether, 20% of perfluorooctyl ethylene, and 20% of propylene glycol methyl ether.

5. The preparation method of a highly clean modified methanol fuel according to claim 4, characterized in that: The preparation method of the rubber and plastic anti-swelling agent includes the following steps. Step 1, weigh petroleum ether, isopropanol, isomeric alcohol polyoxyethylene ether, perfluorooctyl ethylene, and propylene glycol methyl ether respectively according to weight percentages, mix petroleum ether and isopropanol, and then use an ultrasonic disperser to ultrasonically disperse for 30 - 35 minutes at 45 - 50 °C to obtain solution A; Step 2, mix isomeric alcohol polyoxyethylene ether and perfluorooctyl ethylene, and then use an ultrasonic disperser to ultrasonically disperse for 20 - 25 minutes at 45 - 50 °C to obtain solution B; Step 3, mix solution A, solution B and propylene glycol methyl ether together, and stir with a magnetic stirrer for 25 - 30 minutes at 55 - 60 °C to obtain the rubber and plastic anti-swelling agent.

6. The preparation method of a highly clean modified methanol fuel according to claim 1, characterized in that: The metal anti-corrosion agent is prepared by mixing benzotriazole, mercaptobenzothiazole, methylbenzotriazole, silicone and N,N-disaicylic acid-1,2-propanediamine according to a weight ratio of 3:1:1:1:

1.

7. The preparation method of a highly clean modified methanol fuel according to claim 1, characterized in that: The calorific value agent is prepared by mixing 20% of naphthalene ethanol solution, cumene, methylcyclohexane, and trifluorotoluene according to a weight ratio of 1:1:1:

1.

8. The preparation method of a highly clean modified methanol fuel according to claim 1, characterized in that: The additive includes an anti-wear agent, and the anti-wear agent is sulfurized isobutene.

9. A method for preparing a highly clean modified methanol fuel according to claim 8, characterized in that: The sulfurized isobutene is prepared from isobutene as a raw material, first sulfided with sulfur chloride, then dechlorinated and sulfided with sodium sulfide, and refined with alkali.

10. A method for preparing a highly clean modified methanol fuel according to any one of claims 1-9, characterized in that: The preparation method includes the following steps: S1. Weigh methanol, energy enhancer, rubber and plastic anti-swelling agent, metal anti-corrosion agent, calorific value agent, and additive by weight respectively; S2. Add methanol, rubber and plastic anti-swelling agent, and metal anti-corrosion agent into the reaction kettle in sequence and mix evenly; S3. Then add the energy enhancer and calorific value agent into the reaction kettle, the reaction temperature is 240 °C, and react for 6 hours under the condition of 1 MPa; S4. Then add the additive into the reaction kettle and mix evenly to obtain a highly clean modified methanol fuel.