CN113698970A - Methanol modifier and preparation method and application thereof - Google Patents
Methanol modifier and preparation method and application thereof Download PDFInfo
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- CN113698970A CN113698970A CN202111016782.4A CN202111016782A CN113698970A CN 113698970 A CN113698970 A CN 113698970A CN 202111016782 A CN202111016782 A CN 202111016782A CN 113698970 A CN113698970 A CN 113698970A
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Abstract
The invention discloses a methanol modifier and a preparation method and application thereof, belonging to the technical field of new energy. The methanol modifier comprises the following raw materials in parts by weight: 30-40 parts of corrosion inhibitor, 10-20 parts of detergent, 30-40 parts of low-carbon alcohol and 10-20 parts of vegetable oil, wherein the corrosion inhibitor is composed of benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propane diamine, the detergent is composed of polyisobutylene amine and polyether amine, and the low-carbon alcohol is composed of isopropanol and isobutanol. The corrosion inhibitor can form a compact and firm protective film on the surface of metal to protect the metal from being corroded by atmosphere and water; the detergent does not generate sediment, can remove the original CCD, and reduces the abrasion of machine parts by vegetable oil. The methanol modifier can enable the methanol fuel to have the effects of corrosion resistance, oxidation resistance, emulsification resistance, static resistance, lubrication increase, galling prevention between a piston and a cylinder and the like.
Description
Technical Field
The invention relates to the technical field of new energy, and particularly relates to a methanol modifier as well as a preparation method and application thereof.
Background
In the 90 s of the 20 th century, the global energy consumption is increased sharply, the limited petroleum resources are difficult to meet the requirements of people on energy, and simultaneously, the use of the petroleum resources can discharge a large amount of harmful substances into the atmosphere, thereby causing environmental pollution. In order to alleviate the problems of shortage of petroleum supply and environmental pollution, various alternative fuels are put into force in various countries in the world, wherein methanol is used as a green and environment-friendly clean energy source, compared with coal, natural gas, gasoline and diesel oil, the methanol is completely combusted, the heat conversion efficiency is highest, the emission is only water and carbon dioxide, and the methanol-containing fuel is the cleanest, most environment-friendly and most potential fuel in the future. However, methanol is easily oxidized to generate formic acid when being exposed to air, and can swell a rubber gasket, and methanol has strong polarity, is a dry substance, has low lubrication coefficient, and is easy to generate the problems of corrosion, swelling, galling, static electricity and the like when being applied to automobile fuel. And methanol is easy to generate static electricity in the processes of filling, loading and unloading, so that unsafe factors are generated, and the wide application of the methanol as clean energy is limited. Therefore, it is necessary to modify the existing methanol.
On the basis of the background technology, the application creates a new methanol modifier and a preparation method and application thereof, so that the methanol modifier can modify methanol fuel, the methanol fuel has the functions of corrosion resistance, lubricity improvement, static resistance, swelling resistance, emulsification resistance and the like, the safe use of methanol as clean energy is guaranteed, and the methanol modifier becomes an object which is greatly required to be improved in the current industry.
Disclosure of Invention
The invention aims to provide a methanol modifier, which can modify methanol fuel, so that the methanol fuel has the functions of corrosion resistance, lubricity improvement, static resistance, swelling resistance, emulsification resistance and the like, and the safe use of methanol as clean energy is ensured, thereby overcoming the defects of the existing methanol fuel.
In order to solve the technical problems, the invention provides a methanol modifier which comprises the following raw materials in parts by weight: 30-40 parts of corrosion inhibitor, 10-20 parts of detergent, 30-40 parts of low-carbon alcohol and 10-20 parts of vegetable oil, wherein the corrosion inhibitor comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propane diamine, the detergent comprises polyisobutylene amine and polyether amine, and the low-carbon alcohol comprises isopropanol and isobutanol.
Further improved, the corrosion inhibitor comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propanediamine in a weight ratio of 2-4: 1: 1: 1: 1 by weight ratio.
In the detergent, the ratio of the polyisobutene amine to the polyether amine is 1-1.5: 2 according to the weight ratio.
In the further improvement, the ratio of isopropanol to isobutanol in the lower alcohol is 2-4: 1 by weight ratio.
As another improvement of the invention, the invention provides a preparation method of the methanol modifier, which comprises the following steps:
(1) respectively weighing the following raw materials in parts by weight: 30-40 parts of corrosion inhibitor, 10-20 parts of detergent, 30-40 parts of low-carbon alcohol and 10-20 parts of vegetable oil for later use;
wherein, the corrosion inhibitor consists of benzotriazole, mercapto benzothiazole, methyl benzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2 propane diamine, the cleaning agent consists of polyisobutene amine and polyether amine, and the low-carbon alcohol consists of isopropanol and isobutanol;
(2) slowly pouring the corrosion inhibitor weighed in the step (1) into 50 weight percent of low carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution A;
(3) respectively and slowly pouring the detergent and the vegetable oil weighed in the step (1) into the remaining 50 weight percent of low carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution B;
(4) slowly adding the mixed solution B into the mixed solution A, stirring at the rotating speed of 300r/min for 30min, and standing for 30min to obtain the multifunctional compound methanol modifier.
Further improvement, in the step (1), the benzotriazole, the mercapto benzothiazole, the methyl benzotriazole, the organosilicon and N, N-bis (salicylic acid) -1, 2-propane diamine of the corrosion inhibitor are mixed in a ratio of 2-4: 1: 1: 1: 1 by weight ratio.
According to a further improvement, the ratio of the polyisobutene amine and the polyether amine of the detergent in the step (1) is 1-1.5: 2 according to the weight ratio.
In a further improvement, in the step (1), the ratio of isopropanol and isobutanol of the lower alcohol is 2-4: 1 by weight ratio.
As another improvement, the invention provides an application of the methanol modifier, wherein the weight ratio of the methanol modifier to methanol is 1-1.5: 15.
after adopting such design, the invention has at least the following advantages:
the methanol modifier takes low-carbon alcohol, a corrosion inhibitor, a detergent and a lubricant as base materials for the first time, and adopts the corrosion inhibitor blended by Benzotriazole (BTA), Mercaptobenzothiazole (MBT), methylbenzotriazole (TTA), organosilicon and N, N-bis (salicylic acid) -1, 2-propane diamine, so that the methanol modifier can be adsorbed on the surface of metal to form a thin film to protect copper and other metals from being corroded by harmful media in the atmosphere and water, or further has chelation to form a compact and firm protective film, and has hydrophobic effect to ensure that copper equipment is well protected; the antistatic and cleaning agent is prepared by mixing polyisobutylene amine and polyetheramine, and can inhibit the generation of deposits in an oil nozzle, an air inlet valve and a combustion chamber of an automobile by utilizing the excellent cleaning, dispersing, demulsifying, corrosion inhibiting and antioxidant properties of the antistatic and cleaning agent; vegetable oil is used as a lubricating agent, the kinematic viscosity of the vegetable oil is slightly higher than that of diesel oil, and a layer of oil film is more easily formed on the inner wall of the cylinder under the condition of not influencing fuel oil atomization, so that the lubricating property of moving parts is improved, and the abrasion of the parts is reduced. Therefore, the methanol modifier can enable the methanol fuel to have the effects of corrosion resistance, oxidation resistance, static electricity resistance, lubrication increase, galling prevention between a piston and a cylinder and the like, and is a great innovation for safely using the methanol as the clean fuel for the vehicle.
Detailed Description
The methanol modifier is improved on the basis of the existing corrosion inhibitor and detergent which are pure components, so that the methanol modifier is remarkably improved in the aspects of corrosion resistance, emulsification prevention, static resistance, cleaning, lubrication and the like, and specific examples are as follows.
Example one
The methanol modifier of the embodiment comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propanediamine, and the molar ratio is 2: 1: 1: 1: 1, the corrosion inhibitor is prepared by blending polyisobutylene amine and polyether amine according to the weight ratio of 1: 2, a detergent prepared by blending isopropanol and isobutanol in a weight ratio of 2: 1 weight ratio of blended low carbon alcohol and vegetable oil. Wherein, the weight ratio of the corrosion inhibitor, the detergent, the low carbon alcohol and the vegetable oil is as follows: 30:10:30:10.
The methanol modifier in the weight ratio is prepared by the following preparation method, and the preparation method comprises the following specific steps:
(1) respectively weighing the following raw materials in parts by weight: 30 parts of corrosion inhibitor, 10 parts of detergent, 30 parts of low-carbon alcohol and 10 parts of vegetable oil;
(2) slowly pouring the weighed corrosion inhibitor into 15 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution A;
(3) respectively and slowly pouring the weighed detergent and the weighed vegetable oil into the remaining 15 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution B;
(4) slowly adding the mixed solution B into the mixed solution A, stirring at the rotating speed of 300r/min for 30min, and standing for 30min to obtain the multifunctional compound methanol modifier 1.
Methanol modifier 1 obtained in this example was mixed with methanol 1: 10 to prepare the methanol fuel 1 suitable for automobiles.
Example two
The methanol modifier of the embodiment comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propanediamine, and the molar ratio is 3: 1: 1: 1: 1, the corrosion inhibitor is prepared by blending polyisobutylene amine and polyether amine according to the weight ratio of 1.5: 2, a detergent prepared by blending isopropanol and isobutanol in a weight ratio of 3: 1 weight ratio of blended low carbon alcohol and vegetable oil. Wherein, the weight ratio of the corrosion inhibitor, the detergent, the low carbon alcohol and the vegetable oil is as follows: 40:20:40:20.
The methanol modifier in the weight ratio is prepared by the following preparation method, and the preparation method comprises the following specific steps:
(1) respectively weighing the following raw materials in parts by weight: 40 parts of corrosion inhibitor, 20 parts of detergent, 40 parts of low carbon alcohol and 20 parts of vegetable oil;
(2) slowly pouring the weighed corrosion inhibitor into 20 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution A;
(3) respectively and slowly pouring the weighed detergent and the weighed vegetable oil into the remaining 20 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution B;
(4) slowly adding the mixed solution B into the mixed solution A, stirring at the rotating speed of 300r/min for 30min, and standing for 30min to obtain the multifunctional compound methanol modifier 2.
Methanol modifier 2 obtained in this example was mixed with methanol 1: 15 to prepare the methanol fuel 2 suitable for automobiles.
EXAMPLE III
The methanol modifier of the embodiment comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propanediamine, and the molar ratio is 4: 1: 1: 1: 1, the corrosion inhibitor is prepared by blending polyisobutylene amine and polyether amine according to the weight ratio of 1: 2, a detergent prepared by blending isopropanol and isobutanol, and 4: 1 weight ratio of blended low carbon alcohol and vegetable oil. Wherein, the weight ratio of the corrosion inhibitor, the detergent, the low carbon alcohol and the vegetable oil is as follows: 30:10:40:20.
The methanol modifier in the weight ratio is prepared by the following preparation method, and the preparation method comprises the following specific steps:
(1) respectively weighing the following raw materials in parts by weight: 30 parts of corrosion inhibitor, 10 parts of detergent, 40 parts of low carbon alcohol and 20 parts of vegetable oil;
(2) slowly pouring the weighed corrosion inhibitor into 20 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution A;
(3) respectively and slowly pouring the weighed detergent and the weighed vegetable oil into the remaining 20 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution B;
(4) slowly adding the mixed solution B into the mixed solution A, stirring at the rotating speed of 300r/min for 30min, and standing for 30min to obtain the multifunctional compound methanol modifier 3.
Methanol modifier 3 obtained in this example was mixed with methanol 1: 12 to prepare the methanol fuel 3 suitable for automobiles.
Example four
The methanol modifier of the embodiment comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propanediamine, and the molar ratio is 2: 1: 1: 1: 1, the corrosion inhibitor is prepared by blending polyisobutylene amine and polyether amine according to the weight ratio of 1.5: 2, a detergent prepared by blending isopropanol and isobutanol in a weight ratio of 3: 1 weight ratio of blended low carbon alcohol and vegetable oil. Wherein, the weight ratio of the corrosion inhibitor, the detergent, the low carbon alcohol and the vegetable oil is as follows: 40:20:30:10.
The methanol modifier in the weight ratio is prepared by the following preparation method, and the preparation method comprises the following specific steps:
(1) respectively weighing the following raw materials in parts by weight: 40 parts of corrosion inhibitor, 20 parts of detergent, 30 parts of low-carbon alcohol and 10 parts of vegetable oil;
(2) slowly pouring the weighed corrosion inhibitor into 15 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution A;
(3) respectively and slowly pouring the weighed detergent and the weighed vegetable oil into the remaining 15 parts of low-carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution B;
(4) slowly adding the mixed solution B into the mixed solution A, stirring at the rotating speed of 300r/min for 30min, and standing for 30min to obtain the multifunctional compound methanol modifier 4.
Methanol modifier 4 obtained in this example was mixed with methanol 1: 15 to prepare the methanol fuel 4 suitable for automobiles.
Examples of examination
The following performance parameters of the methanol modifiers 1 to 4 prepared in the above examples 1 to 4 were measured, and the specific results are shown in table 1.
TABLE 1 methanol modifier 1-4 Performance parameter test results
From the results in Table 1, it is clear that the liquid product obtained in the above examples has less impurities and ash content of not more than 0.01% among the parameters of methanol modifiers 1 to 4; the moisture content is controlled within 0.5 percent, the existence of acid is reduced, and the corrosivity is reduced; the pH value is 7.5, the content of organic chlorine is not more than 2mg/kg, the total sulfur content is not more than 10mg/kg, the nitrogen content is not more than 160mg/kg, and the environment-friendly performance is excellent; in addition, in a colloid test, the content of unwashed colloid is not more than 60mg/100ml, and the content of solvent washed colloid is not more than 10mg/100ml, which shows that the additive has a good function of avoiding carbon deposition. All performance indexes of the methanol modifier meet the requirements of the standard GB/T34548-2017, and the methanol modifier has better safety performance in promoting the application of methanol in automobiles.
The methanol fuels 1 to 4 obtained in the above examples 1 to 4 were subjected to the following copper sheet corrosion immersion test and carbon deposit prevention cleaning comparative test, and specific comparative examples are as follows.
Comparative experiment 1
The methanol fuels 1 to 4 prepared in the above examples 1 to 4 and the methanol fuel using benzotriazole alone as a preservative were subjected to a copper sheet corrosion immersion test. The results are shown in Table 2 below.
TABLE 2 comparative results of corrosion soaking test of methanol fuel copper sheet
As can be seen from Table 2, the methanol modifiers 1 to 4 of the invention can enable the methanol fuels 1 to 4 to have good corrosion resistance and have the function of compounding and synergism.
Comparative experiment 2
A methanol fuel car test was conducted using the methanol fuels 1 to 4 obtained in examples 1 to 4 above and a methanol fuel using polyisobutylene amine alone as a detergent.
As a result, it was found that carbon deposition was generated at the fuel nozzle at 4 months after the methanol fuel using polyisobutylene amine alone as the detergent was applied to the automobile, whereas no carbon deposition was generated at 1 year after the methanol fuel 1-4 mixed with the methanol modifier 1-4 of this example was applied to the automobile. The methanol modifier provided by the invention has good antistatic and cleaning effects on methanol fuel, and has the functions of compounding and synergism.
The two comparative examples show that the four raw materials in the methanol modifier are matched with each other, so that the methanol modifier not only can exert respective performances, but also can achieve the synergistic effect, the methanol modifier can greatly improve the effects of corrosion resistance, oxidation resistance, static resistance and lubricity of the methanol fuel and preventing galling between a piston and a cylinder, and great innovation is made for safely using the methanol as the clean fuel for vehicles.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The methanol modifier is characterized by comprising the following raw materials in parts by weight: 30-40 parts of corrosion inhibitor, 10-20 parts of detergent, 30-40 parts of low-carbon alcohol and 10-20 parts of vegetable oil, wherein the corrosion inhibitor comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2-propane diamine, the detergent comprises polyisobutylene amine and polyether amine, and the low-carbon alcohol comprises isopropanol and isobutanol.
2. The methanol modifier of claim 1, wherein the corrosion inhibitor comprises benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon, N, N-bis (salicylic acid) -1, 2-propanediamine in a molar ratio of 2-4: 1: 1: 1: 1 by weight ratio.
3. The methanol modifier of claim 1, wherein the ratio of the polyisobutylene amine to the polyetheramine in the detergent is 1-1.5: 2 according to the weight ratio.
4. The methanol modifier according to claim 1, wherein the ratio of isopropanol to isobutanol in the lower alcohol is 2-4: 1 by weight ratio.
5. The preparation method of the methanol modifier is characterized by comprising the following steps:
(1) respectively weighing the following raw materials in parts by weight: 30-40 parts of corrosion inhibitor, 10-20 parts of detergent, 30-40 parts of low-carbon alcohol and 10-20 parts of vegetable oil for later use;
wherein, the corrosion inhibitor consists of benzotriazole, mercapto benzothiazole, methyl benzotriazole, organosilicon and N, N-bis (salicylic acid) -1, 2 propane diamine, the cleaning agent consists of polyisobutene amine and polyether amine, and the low-carbon alcohol consists of isopropanol and isobutanol;
(2) slowly pouring the corrosion inhibitor weighed in the step (1) into 50 weight percent of low carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution A;
(3) respectively and slowly pouring the detergent and the vegetable oil weighed in the step (1) into the remaining 50 weight percent of low carbon alcohol, uniformly mixing, stirring at the rotating speed of 300r/min for 10min, and standing for 10min to obtain a mixed solution B;
(4) slowly adding the mixed solution B into the mixed solution A, stirring at the rotating speed of 300r/min for 30min, and standing for 30min to obtain the multifunctional compound methanol modifier.
6. The method for preparing the methanol modifier according to claim 5, wherein the corrosion inhibitor selected from benzotriazole, mercaptobenzothiazole, methylbenzotriazole, organosilicon, N, N-bis (salicylic acid) -1, 2-propanediamine in the step (1) is prepared by mixing the following components in a weight ratio of 2-4: 1: 1: 1: 1 by weight ratio.
7. The method for preparing the methanol modifier according to claim 5, wherein the ratio of the polyisobutene amine to the polyether amine of the detergent in the step (1) is 1-1.5: 2 according to the weight ratio.
8. The method for preparing the methanol modifier according to claim 5, wherein the ratio of isopropanol and isobutanol of the lower alcohol in the step (1) is 2-4: 1 by weight ratio.
9. The use of the methanol modifier according to any one of claims 1 to 4, wherein the weight ratio of the methanol modifier to the methanol is 1-1.5: 15.
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| CN114958438A (en) * | 2022-05-12 | 2022-08-30 | 液态阳光(北京)科技有限公司 | Biological alcohol-based molecular recombinant clean fuel, preparation method thereof and special molecular agent thereof |
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