CN114292675A - Methanol gasoline additive and preparation method thereof - Google Patents
Methanol gasoline additive and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a methanol gasoline additive and a preparation method thereof, and relates to the technical field of new energy. When the methanol gasoline additive is prepared, firstly, iron powder and magnesium powder are mixed and ground in a hydrogen environment, the mixture is calcined to a molten state, then spraying is carried out, hydrogen is used for carrying out hedging, iron magnesium hydride powder is prepared, trimesic acid and the iron magnesium hydride powder are used for carrying out reaction, a semi-finished product additive is prepared, plant extracts are obtained by extracting plant green leaves, plant organic acids are obtained by carrying out enzymolysis on the plant extracts, and the plant organic acids are grafted on the semi-finished product additive, so that the methanol gasoline additive is prepared. The methanol gasoline additive prepared by the invention can effectively reduce the volatilization and combustion of the methanol gasoline when being added into the methanol gasoline.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a methanol gasoline additive and a preparation method thereof.
Background
The methanol gasoline is a mixture of methanol and gasoline which is a novel environment-friendly fuel prepared by national standard gasoline (93#, 97#, and the like), methanol and an additive according to a certain volume (mass) ratio through a strict process. Also included are mixtures of methanol, ethanol, n-propanol, mixed alcohols of n-butanol and isopropanol, and the like with gasoline. The methanol doping amount is generally 5 to 30 percent. The gasoline is called M15 methanol gasoline with the maximum blending rate of 15 percent. The antiknock performance is good, the Research Octane Number (RON) is increased along with the increase of the methanol doping amount, and the Motor Octane Number (MON) is not influenced. The combustion effluent is less toxic than ordinary leaded gasoline and the exhaust gas has a lower carbon monoxide content. The combustion cleaning performance is good.
The methanol gasoline consists of base gasoline, methanol and additive. The key technical core of the methanol gasoline is the technical level and quality control of the additive. The existing methanol gasoline has stronger volatility, so how to make the performance of the methanol gasoline more stable, the pollution is less, the using effect is better, and the problem to be solved in the energy development is solved, so the research and development of the additive capable of improving the related performance of the methanol gasoline is a main problem solving way.
Disclosure of Invention
The invention aims to provide a methanol gasoline additive and a preparation method thereof, which are used for solving the problems in the prior art.
The methanol gasoline additive is characterized by mainly comprising the following components in parts by weight: 10-17 parts of magnesium iron hydride powder, 10-17 parts of trimesic acid and 16-28 parts of plant organic acid.
Preferably, the magnesium iron hydride powder is prepared by calcining and spraying iron powder and magnesium powder under the condition of hydrogen.
Preferably, the plant organic acid is obtained by extracting plant extract from green leaves of plants and then carrying out enzymolysis on the plant extract.
A preparation method of a methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder in a hydrogen environment, and calcining to a molten state;
(2) spraying: spraying and flushing with hydrogen to obtain magnesium iron hydride powder;
(3) surface coating: reacting trimesic acid with magnesium iron hydride powder to prepare a semi-finished product additive;
(4) graft modification: extracting plant green leaves to obtain a plant extract, carrying out enzymolysis on the plant extract to obtain plant organic acid, and grafting the plant organic acid on the semi-finished product additive to obtain the methanol gasoline additive.
As optimization, the preparation method of the methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, are filled with hydrogen to enable the pressure to reach 0.11-0.13 MPa, are preheated, are heated to 1000-1200 ℃ and are calcined for 40-50 min, and the iron-magnesium molten slurry is prepared.
(2) Spraying: spraying 1000-1200 ℃ iron-magnesium molten slurry at a mass flow of 200-300 g/s, wherein the spray fall is 6-8 m, performing hedging by using 20-30 ℃ hydrogen at a flow rate of 2-3 m/s, and cooling to 10-30 ℃ to obtain hydrogenated iron-magnesium powder;
(3) surface coating: putting magnesium iron hydride powder into a trimesic acid solution with the mass 8-10 times that of the magnesium iron hydride powder, stirring and reacting at 60-70 ℃ and 1500-2000 r/min for 3-4 h, filtering, and washing with absolute ethyl alcohol for 3-5 times to obtain a semi-finished product additive;
(4) graft modification: pretreating plant green leaves, placing the pretreated plant green leaves into a mortar, adding acetone which is 1-2 times of the mass of the plant green leaves, grinding for 8-10 min, placing the plant green leaves into acetone which is 5-8 times of the mass of the plant green leaves, stirring for 20-30 min at 10-20 ℃ and 1500-2000 r/min, centrifuging for 15-20 min at 8000-10000 r/min, taking supernate, drying for 6-8 h at 30-40 ℃ and 5-8 Pa to obtain plant extracts, and mixing the plant extracts and pure water according to a mass ratio of 1: 5-1: 7, uniformly mixing, adding pancrelipase with the mass of 0.03-0.05 time of that of the plant extract, standing for 22-24 h at 35-40 ℃, drying for 6-8 h at 30-40 ℃ under 5-8 Pa to prepare the plant organic acid, and mixing the plant organic acid, the semi-finished product additive and the absolute ethyl alcohol according to the mass ratio of 1: 1: 7-1: 1: 9, uniformly mixing, stirring and reacting at 60-70 ℃ at 1500-2000 r/min for 3-4 h, and filtering to obtain the methanol gasoline additive.
And (3) optimally, in the calcining process of the step (1), the carrier of the vanadium pentoxide small particles is a graphite crucible.
As an optimization, the preheating method in the step (1) comprises the following steps: calcining at 100-150 ℃ for 15-20 min, at 400-500 ℃ for 20-30 min, and at 700-800 ℃ for 40-50 min.
Preferably, the trimesic acid solution in the step (3) is prepared by mixing trimesic acid and absolute ethyl alcohol according to a mass ratio of 1: 7-1: 9 is prepared by mixing evenly.
Preferably, the plant green leaves in the step (4) are one or a mixture of more of chlorophytum comosum, green leaves of scindapsus aureus, green leaves of aloe and green leaves of ivy.
As optimization, the pretreatment method in the step (4) comprises the following steps: washing with pure water for 3-5 times, soaking in 10-15% acetic acid solution for 4-5 h, washing with pure water for 3-5 times, draining, and slicing.
Compared with the prior art, the invention has the following beneficial effects:
when the methanol gasoline additive is prepared, firstly, iron powder and magnesium powder are mixed and ground in a hydrogen environment, the mixture is calcined to a molten state, then spraying is carried out, hydrogen is used for carrying out hedging, iron magnesium hydride powder is prepared, trimesic acid and the iron magnesium hydride powder are used for carrying out reaction, a semi-finished product additive is prepared, plant extracts are obtained by extracting plant green leaves, plant organic acids are obtained by carrying out enzymolysis on the plant extracts, and the plant organic acids are grafted on the semi-finished product additive, so that the methanol gasoline additive is prepared.
Firstly, magnesium iron hydride powder is formed by spraying, the particle size is small and dispersed, the magnesium iron hydride powder reacts with trimesic acid and plant organic acid in sequence, the plant organic acid has good adsorption and compatibility effects on small molecular organic matters in the methanol gasoline, the prepared methanol gasoline additive has good solubility and is easy to uniformly disperse in the methanol gasoline, the trimesic acid combines metal elements on the surface of the magnesium iron hydride powder to form a metal organic network, and the magnesium iron hydride powder has catalysis and porous adsorption performances, can catalyze hydrogen in the magnesium iron hydride powder to perform hydrogenation addition on unsaturated hydrocarbons in the methanol gasoline, reduces the content of the unsaturated hydrocarbons in the methanol gasoline, thereby reducing PM 2.5 and other pollution generated by the combustion of the methanol gasoline, and the porous structure is easy to adsorb the small molecular organic matters, so that the methanol gasoline is stored stably and is difficult to volatilize.
And secondly, the plant organic acid is prepared by extracting and performing enzymolysis on the plant green leaves, has a good adsorption effect on volatile small molecular substances such as methanol, formaldehyde and the like, is natural and non-toxic, and simultaneously increases the stabilizing effect of the methanol-based clean fuel and reduces the volatilization of the small molecular substances in the methanol-based clean fuel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to more clearly illustrate the method provided by the present invention, the following examples are used to illustrate the method for testing the indexes of the methanol gasoline additive prepared in the following examples as follows:
and (3) reducing volatility: the same mass of the methanol gasoline additive obtained in each example and the comparative example material is taken, absolute ethyl alcohol and the same type of gasoline are uniformly mixed according to the same mass and the same proportion, the additive is added and stirred for the same time to prepare the same amount of methanol gasoline, the methanol gasoline is placed in beakers of the same type, the methanol gasoline is placed for the same time under the conditions of the same pressure and the same temperature, the quality is tested, and the volatilization amount, namely the initial mass-the test quality, is calculated and recorded.
Pollution reducing property: the methanol gasoline additive obtained in each example and a comparative example material are taken to be of the same mass, absolute ethyl alcohol and gasoline of the same type are uniformly mixed according to the same mass and the same proportion, the additive is added and stirred for the same time to prepare methanol gasoline of the same amount, the methanol gasoline is placed in the environment without PM 2.5 for combustion under the same condition, and a PM 2.5 sensor is used for measuring PM 2.5 in the air after the combustion for the same time.
Example 1
A methanol gasoline additive mainly comprises the following components in parts by weight: 10 parts of magnesium iron hydride powder, 10 parts of trimesic acid and 16 parts of plant organic acid.
The preparation method of the methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, and are filled with hydrogen to ensure that the pressure reaches 0.11MPa, and then are calcined at 100 ℃ for 20min, 400 ℃ for 30min, 700 ℃ for 50min and then are heated to 1000 ℃ for 50min to prepare the iron-magnesium molten slurry.
(2) Spraying: spraying 1000 ℃ iron-magnesium molten slurry at a mass flow of 200g/s, wherein the spray fall is 6m, performing hedging by using 20 ℃ hydrogen at a flow rate of 3m/s, and cooling to 10 ℃ to obtain iron-magnesium hydride powder;
(3) surface coating: mixing trimesic acid and absolute ethyl alcohol according to a mass ratio of 1: 7, uniformly mixing to prepare a trimesic acid solution, putting magnesium iron hydride powder into the trimesic acid solution with the mass of 8 times that of the magnesium iron hydride powder, stirring and reacting for 4 hours at 60 ℃ and 1500r/min, filtering, and washing for 3 times by using absolute ethyl alcohol to prepare a semi-finished product additive;
(4) graft modification: washing plant green leaves with pure water for 3 times, soaking in 10% acetic acid solution for 5h, washing with pure water for 3 times, draining, slicing, placing in a mortar, adding acetone 1 time of plant green leaves by mass, grinding for 10min, placing in acetone 5 times of plant green leaves by mass, stirring at 10 ℃, 1500r/min for 30min, centrifuging at 8000r/min for 20min, collecting supernatant, drying at 30 ℃, 8Pa for 6h to obtain plant extract, mixing the plant extract with pure water according to a mass ratio of 1: 5, uniformly mixing, adding pancrelipase with the mass of 0.03 time of that of the plant extract, standing for 24 hours at 35 ℃, drying for 8 hours at 30 ℃ and 5Pa to prepare the plant organic acid, mixing the plant organic acid, the semi-finished product additive and the absolute ethyl alcohol according to the mass ratio of 1: 1: 7, mixing uniformly, stirring and reacting at 60 ℃ for 4h at 1500r/min, and filtering to obtain the methanol gasoline additive.
Example 2
A methanol gasoline additive mainly comprises the following components in parts by weight: 14 parts of magnesium iron hydride powder, 14 parts of trimesic acid and 23 parts of plant organic acid.
The preparation method of the methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, and are filled with hydrogen to ensure that the pressure reaches 0.12MPa, and then are calcined at 120 ℃ for 18min, 450 ℃ for 25min, 750 ℃ for 45min and then are heated to 1100 ℃ for 45min to prepare the iron-magnesium molten slurry.
(2) Spraying: spraying 1100 ℃ iron-magnesium molten slurry at the mass flow of 250g/s, wherein the spray fall is 7m, performing hedging by using 25 ℃ hydrogen at the flow rate of 2m/s, and cooling to 20 ℃ to obtain iron-magnesium hydride powder;
(3) surface coating: mixing trimesic acid and absolute ethyl alcohol according to a mass ratio of 1: 8, uniformly mixing to prepare a trimesic acid solution, putting magnesium iron hydride powder into the trimesic acid solution with the mass of 9 times that of the magnesium iron hydride powder, stirring and reacting for 3.5 hours at 65 ℃ and 1800r/min, filtering, and washing for 4 times by using absolute ethyl alcohol to prepare a semi-finished product additive;
(4) graft modification: washing plant green leaves with pure water for 4 times, soaking in 12.5% acetic acid solution for 4.5h, washing with pure water for 4 times, draining, slicing, placing in a mortar, adding acetone 1.5 times of plant green leaves, grinding for 9min, placing in acetone 6 times of plant green leaves, stirring at 15 deg.C and 1800r/min for 25min, centrifuging at 9000r/min for 17min, collecting supernatant, drying at 35 deg.C and 6Pa for 7h to obtain plant extract, mixing plant extract and pure water at a mass ratio of 1: 6, uniformly mixing, adding pancrelipase with the mass of 0.04 times of that of the plant extract, standing at 38 ℃ for 23 hours, drying at 35 ℃ under 6Pa for 7 hours to obtain plant organic acid, mixing the plant organic acid, the semi-finished product additive and the absolute ethyl alcohol according to the mass ratio of 1: 1: 8, mixing uniformly, stirring and reacting at 65 ℃ and 1800r/min for 3.5h, and filtering to obtain the methanol gasoline additive.
Example 3
A methanol gasoline additive mainly comprises the following components in parts by weight: 17 parts of magnesium iron hydride powder, 17 parts of trimesic acid and 28 parts of plant organic acid.
The preparation method of the methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, and are filled with hydrogen to ensure that the pressure reaches 0.13MPa, and then are calcined at 150 ℃ for 25min, 500 ℃ for 20min, 800 ℃ for 40min and then are heated to 1200 ℃ for 40min, thus obtaining the iron-magnesium molten slurry.
(2) Spraying: spraying 1200 ℃ iron magnesium molten slurry at the mass flow of 300g/s, wherein the spray fall is 8m, carrying out hedging by using 20-30 ℃ hydrogen at the flow rate of 2m/s, and cooling to 30 ℃ to obtain iron magnesium hydride powder;
(3) surface coating: mixing trimesic acid and absolute ethyl alcohol according to a mass ratio of 1: 9, uniformly mixing to prepare a trimesic acid solution, putting magnesium iron hydride powder into the trimesic acid solution with the mass of 10 times that of the magnesium iron hydride powder, stirring and reacting for 3 hours at 70 ℃ at 2000r/min, filtering, and washing for 5 times by using absolute ethyl alcohol to prepare a semi-finished product additive;
(4) graft modification: washing plant green leaves with pure water for 5 times, soaking in 15% acetic acid solution for 4h, washing with pure water for 5 times, draining, slicing, placing in a mortar, adding acetone 2 times of plant green leaves by mass, grinding for 10min, placing in acetone 8 times of plant green leaves by mass, stirring for 20min at 20 ℃, 2000r/min, centrifuging for 15min at 10000r/min, taking supernatant, drying for 8h at 40 ℃, 5Pa, preparing plant extract, mixing the plant extract with pure water according to a mass ratio of 1: 5, uniformly mixing, adding pancrelipase with the mass of 0.05 time of that of the plant extract, standing for 24 hours at 35 ℃, drying for 6 hours at 30 ℃ and 8Pa to prepare the plant organic acid, mixing the plant organic acid, the semi-finished product additive and the absolute ethyl alcohol according to the mass ratio of 1: 1: 9, mixing uniformly, stirring and reacting for 3 hours at 60 ℃ at 2000r/min, and filtering to obtain the methanol gasoline additive.
Comparative example 1
A methanol gasoline additive mainly comprises the following components in parts by weight: 14 parts of magnesium iron hydride powder and 14 parts of vegetable organic acid.
The preparation method of the methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, and are filled with hydrogen to ensure that the pressure reaches 0.12MPa, and then are calcined at 120 ℃ for 18min, 450 ℃ for 25min, 750 ℃ for 45min and then are heated to 1100 ℃ for 45min to prepare the iron-magnesium molten slurry.
(2) Spraying: spraying 1100 ℃ iron-magnesium molten slurry at the mass flow of 250g/s, wherein the spray fall is 7m, performing hedging by using 25 ℃ hydrogen at the flow rate of 2m/s, and cooling to 20 ℃ to obtain iron-magnesium hydride powder;
(3) graft modification: washing plant green leaves with pure water for 4 times, soaking in 12.5% acetic acid solution for 4.5h, washing with pure water for 4 times, draining, slicing, placing in a mortar, adding acetone 1.5 times of plant green leaves, grinding for 9min, placing in acetone 6 times of plant green leaves, stirring at 15 deg.C and 1800r/min for 25min, centrifuging at 9000r/min for 17min, collecting supernatant, drying at 35 deg.C and 6Pa for 7h to obtain plant extract, mixing plant extract and pure water at a mass ratio of 1: 6, uniformly mixing, adding pancrelipase with the mass of 0.04 times of that of the plant extract, standing at 38 ℃ for 23 hours, drying at 35 ℃ under 6Pa for 7 hours to obtain the plant organic acid, mixing the plant organic acid, the magnesium iron hydride powder and the absolute ethyl alcohol according to the mass ratio of 1: 1: 8, mixing uniformly, stirring and reacting at 65 ℃ and 1800r/min for 3.5h, and filtering to obtain the methanol gasoline additive.
Comparative example 2
A methanol gasoline additive mainly comprises the following components in parts by weight: 14 parts of magnesium iron hydride powder and 14 parts of trimesic acid.
The preparation method of the methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, and are filled with hydrogen to ensure that the pressure reaches 0.12MPa, and then are calcined at 120 ℃ for 18min, 450 ℃ for 25min, 750 ℃ for 45min and then are heated to 1100 ℃ for 45min to prepare the iron-magnesium molten slurry.
(2) Spraying: spraying 1100 ℃ iron-magnesium molten slurry at the mass flow of 250g/s, wherein the spray fall is 7m, performing hedging by using 25 ℃ hydrogen at the flow rate of 2m/s, and cooling to 20 ℃ to obtain iron-magnesium hydride powder;
(3) surface coating: mixing trimesic acid and absolute ethyl alcohol according to a mass ratio of 1: 8, uniformly mixing to prepare a trimesic acid solution, putting magnesium iron hydride powder into the trimesic acid solution with the mass of 9 times that of the magnesium iron hydride powder, stirring and reacting for 3.5h at 65 ℃ and 1800r/min, filtering, and washing for 4 times by using absolute ethyl alcohol to prepare the methanol gasoline additive.
Examples of effects
The following table 1 shows the results of the volatility reducing and stain reducing performance analysis using the methanol gasoline additives of examples 1 to 3 of the present invention and comparative examples 1 to 2.
TABLE 1
From the comparison of the experimental data of examples 1, 2 and 3 and comparative example 1 in table 1, it can be seen that the volatilization amount and PM 2.5 values of examples 1, 2 and 3 compared with comparative example 1 are small, which indicates that, when surface coating is performed, the pyromellitic acid is combined with metal elements on the surface of the magnesium iron hydride powder to form a metal organic network, which has the performances of catalysis and porous adsorption, and can catalyze the hydrogen in the magnesium iron hydride powder to perform hydrogenation addition on unsaturated hydrocarbons in methanol gasoline, so as to reduce the unsaturated hydrocarbon content of the methanol gasoline, improve the pollution reduction performance of the methanol gasoline additive on the methanol gasoline, and the porous structure is easy to adsorb small molecular organic matters, so that the methanol gasoline is stable in storage and difficult to volatilize, and improve the volatility reduction performance of the methanol gasoline additive on the methanol gasoline; the experimental data comparison of examples 1, 2 and 3 and comparative example 2 shows that the volatilization amount of examples 1, 2 and 3 is small compared with comparative example 2, which shows that the plant organic acid has good adsorption effect on volatile substances such as methanol and formaldehyde and is natural and non-toxic when the grafting modification is carried out, and the small molecular substances in the methanol-based clean fuel can be effectively reduced and the volatility of the methanol gasoline additive on the methanol gasoline can be improved when the plant organic acid is grafted on the semi-finished product additive.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A methanol gasoline additive mainly comprises the following components in parts by weight: 10-17 parts of magnesium iron hydride powder, 10-17 parts of trimesic acid and 16-28 parts of plant organic acid.
2. The methanol gasoline additive as claimed in claim 1, wherein the magnesium iron hydride powder is prepared by calcining and spraying iron powder and magnesium powder under hydrogen.
3. The methanol gasoline additive as claimed in claim 2, wherein the additive is prepared by reacting chloroform with potassium metal to prepare hydrogenated carbon nanoball, acid-etching the carbon nanoball with concentrated sulfuric acid to prepare modified carbon nanoball, and grafting plant extract on the modified carbon nanoball.
4. A preparation method of a methanol gasoline additive mainly comprises the following preparation steps:
(1) and (3) calcining: mixing iron powder and magnesium powder in a hydrogen environment, and calcining to a molten state;
(2) spraying: spraying and flushing with hydrogen to obtain magnesium iron hydride powder;
(3) surface coating: reacting trimesic acid with magnesium iron hydride powder to prepare a semi-finished product additive;
(4) graft modification: extracting plant green leaves to obtain a plant extract, carrying out enzymolysis on the plant extract to obtain plant organic acid, and grafting the plant organic acid on the semi-finished product additive to obtain the methanol gasoline additive.
5. The method for preparing the methanol gasoline additive as claimed in claim 4, wherein the method for preparing the methanol gasoline additive mainly comprises the following steps:
(1) and (3) calcining: mixing iron powder and magnesium powder according to a mass ratio of 56: 49 are uniformly mixed and then are placed in a pulverizer to be pulverized until the particle size is less than 0.5mm, then are placed in a calcining furnace, are filled with hydrogen to enable the pressure to reach 0.11-0.13 MPa, are preheated, are heated to 1000-1200 ℃ and are calcined for 40-50 min, and the iron-magnesium molten slurry is prepared.
(2) Spraying: spraying 1000-1200 ℃ iron-magnesium molten slurry at a mass flow of 200-300 g/s, wherein the spray fall is 6-8 m, performing hedging by using 20-30 ℃ hydrogen at a flow rate of 2-3 m/s, and cooling to 10-30 ℃ to obtain hydrogenated iron-magnesium powder;
(3) surface coating: putting magnesium iron hydride powder into a trimesic acid solution with the mass 8-10 times that of the magnesium iron hydride powder, stirring and reacting at 60-70 ℃ and 1500-2000 r/min for 3-4 h, filtering, and washing with absolute ethyl alcohol for 3-5 times to obtain a semi-finished product additive;
(4) graft modification: pretreating plant green leaves, placing the pretreated plant green leaves into a mortar, adding acetone which is 1-2 times of the mass of the plant green leaves, grinding for 8-10 min, placing the plant green leaves into acetone which is 5-8 times of the mass of the plant green leaves, stirring for 20-30 min at 10-20 ℃ and 1500-2000 r/min, centrifuging for 15-20 min at 8000-10000 r/min, taking supernate, drying for 6-8 h at 30-40 ℃ and 5-8 Pa to obtain plant extracts, and mixing the plant extracts and pure water according to a mass ratio of 1: 5-1: 7, uniformly mixing, adding pancrelipase with the mass of 0.03-0.05 time of that of the plant extract, standing for 22-24 h at 35-40 ℃, drying for 6-8 h at 30-40 ℃ under 5-8 Pa to prepare the plant organic acid, and mixing the plant organic acid, the semi-finished product additive and the absolute ethyl alcohol according to the mass ratio of 1: 1: 7-1: 1: 9, uniformly mixing, stirring and reacting at 60-70 ℃ at 1500-2000 r/min for 3-4 h, and filtering to obtain the methanol gasoline additive.
6. The method for preparing the methanol gasoline additive according to claim 5, wherein in the calcining process in the step (1), the carrier of the vanadium pentoxide small particles is a graphite crucible.
7. The method for preparing the methanol gasoline additive as claimed in claim 6, wherein the preheating method in step (1) comprises the following steps: calcining at 100-150 ℃ for 15-20 min, at 400-500 ℃ for 20-30 min, and at 700-800 ℃ for 40-50 min.
8. The method for preparing a methanol gasoline additive as claimed in claim 7, wherein the trimesic acid solution in step (3) is prepared by mixing trimesic acid and absolute ethanol in a mass ratio of 1: 7-1: 9 is prepared by mixing evenly.
9. The method for preparing a methanol gasoline additive as claimed in claim 8, wherein the plant green leaves in step (4) are one or more of chlorophytum comosum, scindapsus aureus, aloe green leaves and ivy green leaves.
10. The method for preparing the methanol gasoline additive as claimed in claim 9, wherein the pretreatment in step (4) comprises: washing with pure water for 3-5 times, soaking in 10-15% acetic acid solution for 4-5 h, washing with pure water for 3-5 times, draining, and slicing.
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| CN115386404A (en) * | 2022-07-11 | 2022-11-25 | 中润油新能源股份有限公司 | High-cleanness methanol gasoline and preparation method thereof |
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| CN107955652A (en) * | 2017-11-24 | 2018-04-24 | 桂林市雁山区青少年活动中心 | A kind of carbinol gasoline fuel compound additive and preparation method thereof |
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| CN115386404A (en) * | 2022-07-11 | 2022-11-25 | 中润油新能源股份有限公司 | High-cleanness methanol gasoline and preparation method thereof |
| CN115322815A (en) * | 2022-07-18 | 2022-11-11 | 中润油新能源股份有限公司 | Bio-based methanol gasoline and preparation method thereof |
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