CN116515539A

CN116515539A - Preparation method of high-clean fuel and high-clean fuel

Info

Publication number: CN116515539A
Application number: CN202310643827.3A
Authority: CN
Inventors: 张德熙; 班超; 李延明
Original assignee: Langfang Huilai Petroleum Product Co ltd
Current assignee: Langfang Huilai Petroleum Product Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-08-01

Abstract

The invention discloses a preparation method of a high-cleanness fuel, which comprises the following steps: under the heating condition, injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at high speed for mixing, and simultaneously spraying high-pressure air into the container to obtain a first mixture; mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 30-60 ℃ to obtain a second mixture; mixing petroleum mixed dimethylbenzene with the second mixture, adding an additive, and stirring at a high speed under ultrasonic conditions to obtain a third mixture; the third mixture is centrifugally separated and filtered, so that the production cost of the high-clean fuel obtained by the method is far lower than that of the existing fuel, the combustion is more sufficient, the carbon deposition formation is reduced, the pollution of combustion residues to underground water quality is improved, and the high-clean fuel is more environment-friendly than the existing fuel.

Description

Preparation method of high-clean fuel and high-clean fuel

Technical Field

The invention relates to the technical field of chemical products, in particular to a preparation method of a high-clean fuel and the high-clean fuel.

Background

With the development of world economy, the demand for fuel is increasing, and the traditional resources such as diesel, gasoline, natural gas and the like are becoming deficient. According to the statistics of world petroleum peak, world petroleum can be exploited for 32 years for commercial use, so the development of novel high-cleanness alternative energy sources becomes a main direction of the development of the future energy source field.

Meanwhile, the exhaust emission of motor vehicles has become a main pollution source in large cities around the world. The environmental pollution of gasoline vehicles is more serious than gasoline vehicles, and more vehicles and various internal combustion engines use gasoline.

The existing high-cleanness gasoline is prepared by chemical raw materials, base component oil (89 # gasoline), methyl Tertiary Butyl Ether (MTBE), alkylate oil and aromatic hydrocarbons in proportion. The existing gasoline has high production cost, the antiknock MTBE is difficult to degrade, and the water source is polluted.

Disclosure of Invention

The invention aims to provide a preparation method of a high-cleanness fuel, which solves the problems that an antiknock MTBE is difficult to degrade and pollutes the environment in the prior art.

To solve the above problems, a first aspect of the present invention provides a method for preparing a highly clean fuel, comprising:

under the heating condition, injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at high speed for mixing, and simultaneously spraying high-pressure air into the container to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 30-60 ℃ to obtain a second mixture;

mixing petroleum mixed dimethylbenzene with the second mixture, adding an additive, and stirring at a high speed under ultrasonic conditions to obtain a third mixture;

centrifugally separating and filtering the third mixture to obtain a high-clean fuel;

the mass ratio of the raw materials is as follows: stable light hydrocarbon (30-42%), isooctane (10-20%), aromatic hydrocarbon (15-20%), petroleum mixed xylene (20-28%), isoamylene (8-12%), additive (0.01-0.02%) and methanol (4-15%).

Optionally, the additive is dodecyl polyoxyethylene alcohol or dodecyl benzene polyoxyethylene ether.

Optionally, the heating condition is 25 ℃ to 50 ℃.

Optionally, the time for spraying the high-pressure air into the container is 5-10min, and the air pressure of the high-pressure air is 35-100kpa.

Optionally, the rotating speed of the closed container is 1000r/min-3000r/min;

the stirring speed under the ultrasonic condition is 2500r/min-5000r/min.

Optionally, the first mixture is mixed with isooctane and isoamylene and then placed in a closed environment and stirred at 52 ℃.

Optionally, the mass ratio of the raw materials is as follows: 38% of stable light hydrocarbon, 12% of isooctane, 15% of coal-to-aromatic hydrocarbon, 21% of petroleum mixed xylene, 9% of isoamylene, 0.02% of additive and 4.98% of methanol.

Alternatively, the stirring time for high-speed stirring under ultrasonic conditions is 10 to 20 minutes.

In another aspect, the present invention provides a highly clean fuel prepared by the method of preparing a highly clean fuel as described above.

The technical scheme of the invention has the following beneficial technical effects:

the production cost of the high-clean fuel obtained by the preparation method of the high-clean fuel is far lower than the existing production cost, the combustion is more sufficient, the formation of carbon deposition is reduced, the pollution of combustion residues to underground water quality is improved, and compared with the existing fuel, the high-clean fuel is more environment-friendly, and the contents of benzene, oxygen and sulfur are lower than the national standard by 50%. Meanwhile, the high clean fuel obtained based on the method has good layering resistant effect, and the water content increase of the bottom layer solution is far lower than that of the prior commercial gasoline after the wide-mouth bottle is stored for 30 days.

Drawings

FIG. 1 is a flow chart of a method for preparing a highly clean fuel according to the present invention.

Detailed Description

The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.

It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The existing high-cleanness gasoline is prepared by chemical raw materials, base component oil (89 # gasoline), MTBE, alkylate oil and aromatic hydrocarbons in proportion. The existing gasoline has high production cost, the antiknock MTBE is difficult to degrade, and the water source is polluted.

The invention provides a preparation method of a high-cleanness fuel, which comprises the following steps:

under the heating condition, the stable light hydrocarbon, the coal aromatic hydrocarbon and the methanol are injected into a closed container rotating at a high speed for mixing, and high-pressure air is sprayed into the container at the same time, so that a first mixture is obtained. Wherein, the heating condition can be 25 ℃ to 50 ℃, and is preferably 50 ℃; the rotary closed container can be a rotary airflow mixer, the inner cylinder wall of the rotary airflow mixer is provided with an impeller, liquid and gas are respectively conveyed into the rotary airflow mixer through two pipelines, and the impeller mixes the gas and the liquid through rotation; in this embodiment, the rotation speed of the closed container is 1000r/min-3000r/min, preferably 3000r/min; the mixing time is 5-10min, and the high-temperature and high-pressure environment for oxidation reaction is formed by rotating at high speed in a closed container and introducing air, so that the full mixing of various raw materials is realized.

Mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 30-60 ℃ to obtain a second mixture. The closed environment here can be achieved by placing the mixture in a vacuum closed container, preferably at a temperature of 52 ℃. Mixing in a vacuum sealed container prevents the raw materials from volatilizing to cause proportion imbalance, and prevents other impurities from being mixed.

Mixing petroleum mixed xylene with the second mixture, adding an additive, and stirring at high speed under ultrasonic conditions for 10-20min to obtain a third mixture; in the embodiment, the additive adopts the dodecyl polyoxyethylene alcohol or the dodecyl benzene polyoxyethylene ether, and the dodecyl polyoxyethylene alcohol or the dodecyl benzene polyoxyethylene ether is used as the additive, so that a better anti-layering effect can be achieved, and particularly, the water precipitation in the mixture can be prevented. Centrifugally separating and filtering the third mixture to obtain a high-clean fuel;

the mass ratio of the raw materials is as follows: the mass ratio of the raw materials is as follows: 38% of stable light hydrocarbon, 12% of isooctane, 15% of coal-to-aromatic hydrocarbon, 21% of petroleum mixed xylene, 9% of isoamylene, 0.02% of additive and 4.98% of methanol.

Specific examples and comparative examples are provided below to illustrate in detail the methods provided by the present invention.

Example 1

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 25 ℃ and injecting high-pressure air of 35kpa into the container, wherein the mixing time is 10min, and the rotating speed of the closed container is 2000r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 30 ℃ for 10min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 10 minutes to obtain a third mixture;

and centrifuging and filtering the third mixture to obtain the high-cleanliness fuel.

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 10% of isooctane, 15% of coal-to-aromatic hydrocarbon, 22% of petroleum mixed xylene, 8% of isoamylene, 0.01% of additive and 14.99% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 98, the combustion value was 12034kcal/kg, the benzene content was 0.4g/kwh, the oxygen content was 1.35g/kwh, the sulfur content was 5g/kwh, and the increase in water content of the underlying solution was 35 μg g after 30 days of jar rest ^―1 。

Example 2

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 50 ℃ and injecting 70kpa of high-pressure air into the container, wherein the mixing time is 10min, and the rotating speed of the closed container is 3000r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 35 ℃ for 15min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 20 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 38% of stable light hydrocarbon, 12% of isooctane, 15% of coal-to-aromatic hydrocarbon, 21% of petroleum mixed xylene, 9% of isoamylene, 0.02% of additive and 4.98% of methanol.

The high clean fuel obtained by the embodiment has far lower production cost than the prior production cost, more complete combustion, reduced carbon deposition formation, improved pollution of combustion residues to underground water quality, and more environmental protection compared with the prior fuel, wherein the octane number is 97, the combustion value is 12220kcal/kg, and the benzene content0.38g/kwh, 1.0g/kwh oxygen content, 4.8g/kwh sulfur content, and 32 μg×g water content increase after 30 days of jar standing ^―1 。

Example 3

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 35 ℃ and injecting high-pressure air of 60kpa into the container, wherein the mixing time is 8min, and the rotating speed of the closed container is 2300r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 45 ℃ for 13min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 12 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 42% of stable light hydrocarbon, 10% of isooctane, 15% of coal-to-aromatic hydrocarbon, 20.99% of petroleum mixed xylene, 8% of isoamylene, 0.01% of additive and 4% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 95, the combustion value was 12340kcal/kg, the benzene content was 0.35g/kwh, the oxygen content was 1.23g/kwh, the sulfur content was 3.5g/kwh, and the water content of the primer solution increased by 38 μg g after 30 days of standing in a jar ^―1 。

Example 4

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 25 ℃ and injecting high-pressure air of 35kpa into the container, wherein the mixing time is 6min, and the rotating speed of the closed container is 2500r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 35 ℃ for 13min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 13 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 37% of stable light hydrocarbon, 11% of isooctane, 16% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 10% of isoamylene, 0.01% of additive and 5.99% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 97, the combustion value was 12230kcal/kg, the benzene content was 0.36g/kwh, the oxygen content was 1.31g/kwh, the sulfur content was 4.4g/kwh, and the water content of the primer solution was 37 μg after 30 days of standing in a jar ^―1 。

Example 5

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 50 ℃ and injecting 80kpa of high-pressure air into the container, wherein the mixing time is 8min, and the rotating speed of the closed container is 2800r/min to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 45 ℃ for 14min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 18 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 12% of isooctane, 15% of coal-to-aromatic hydrocarbon, 26% of petroleum mixed xylene, 10% of isoamylene, 0.02% of additive and 6.98% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 98, the combustion value was 11903kcal/kg, the benzene content was 0.37g/kwh, the oxygen content was 1.32g/kwh, the sulfur content was 3.5g/kwh, and the water content of the primer solution increased by 36 μg g after 30 days of standing in a jar ^―1 。

Example 6

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 45 ℃ and injecting high-pressure air of 75kpa into the container at the same time, wherein the mixing time is 5min, and the rotating speed of the closed container is 2500r/min, so as to obtain a first mixture;

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 18% of isooctane, 18% of coal-to-aromatic hydrocarbon, 23% of petroleum mixed xylene, 8% of isoamylene, 0.02% of additive and 10.98% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 96, the combustion value was 12093kcal/kg, the benzene content was 0.39g/kwh, the oxygen content was 1.28g/kwh, the sulfur content was 3.7g/kwh, and the water content of the primer solution increased by 42 μg g after 30 days of standing in a jar ^―1 。

Example 7

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 35 ℃ and injecting 80kpa of high-pressure air into the container, wherein the mixing time is 7min, and the rotating speed of the closed container is 2300r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 60 ℃ for 12min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 15 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 38% of stable light hydrocarbon, 10% of isooctane, 15% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 8.5% of isoamylene, 0.01% of additive and 8.49% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 99, the combustion value was 12322kcal/kg, the benzene content was 0.32g/kwh, the oxygen content was 1.21g/kwh, the sulfur content was 4.7g/kwh, and the water content of the primer solution increased by 45 μg g after 30 days of standing in a jar ^―1 。

Example 8

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 25 ℃ and injecting high-pressure air of 50kpa into the container, wherein the mixing time is 6min, and the rotating speed of the closed container is 2000r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 55 ℃ for 12min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecyl polyoxyethylene alcohol, and stirring at high speed under ultrasonic conditions for 16 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 15% of isooctane, 16% of coal-to-aromatic hydrocarbon, 22% of petroleum mixed xylene, 9% of isoamylene, 0.01% of additive and 7.99% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 108, the combustion value was 12320kcal/kg, the benzene content was 0.33g/kwh, the oxygen content was 1.18g/kwh, the sulfur content was 4.3g/kwh, and the water content of the primer solution increased by 45 μg g after 30 days of jar rest ^―1 。

Example 9

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 25 ℃ and injecting high-pressure air of 85kpa into the container, wherein the mixing time is 8min, and the rotating speed of the closed container is 1600r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 37 ℃ for 13min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecylbenzene polyoxyethylene ether, and stirring at high speed under ultrasonic conditions for 16 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 35% of stable light hydrocarbon, 10% of isooctane, 18% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 9% of isoamylene, 0.015% of additive and 7.985% of methanol.

The high clean fuel obtained by the embodiment has far lower production cost than the prior production cost, more sufficient combustion, reduced carbon deposition formation, improved pollution of combustion residues to underground water quality, and more environmental protection compared with the prior fuel, wherein the octane number is 96, the combustion value is 13003kcal/kg, the benzene content is 0.38g/kwh, the oxygen content is 1.29g/kwh, the sulfur content is 4.8g/kwh, after the jar is left to stand for 30 days, the water content of the bottom layer solution is increased by 42 mug ^―1 。

Example 10

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 40 ℃ and injecting high-pressure air of 65kpa into the container at the same time, wherein the mixing time is 8min, and the rotating speed of the closed container is 1300r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and then placing in a closed environment to stir at 38 ℃ for 15min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecylbenzene polyoxyethylene ether, and stirring at high speed under ultrasonic conditions for 15 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 30.98% of stable light hydrocarbon, 10% of isooctane, 15% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 9% of isoamylene, 0.02% of additive and 15% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 97, the combustion value was 12890kcal/kg, the benzene content was 0.39g/kwh, the oxygen content was 1.33g/kwh, the sulfur content was 4.6g/kwh, and the water content of the primer solution increased by 39 μg g after 30 days of standing in a jar ^―1 。

Example 11

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 27 ℃ and injecting high-pressure air of 95kpa into the container, wherein the mixing time is 7min, and the rotating speed of the closed container is 1000r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 33 ℃ for 13min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecylbenzene polyoxyethylene ether, and stirring at high speed under ultrasonic conditions for 14 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 10% of isooctane, 15% of coal-to-aromatic hydrocarbon, 28% of petroleum mixed xylene, 10% of isoamylene, 0.02% of additive and 6.98% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 96, the combustion value was 12870kcal/kg, the benzene content was 0.35g/kwh, the oxygen content was 1.26g/kwh, the sulfur content was 4.3g/kwh, and the water content of the primer solution was 37 μg after 30 days of standing in a jar ^―1 。

Example 12

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 43 ℃ and injecting high-pressure air of 65kpa into the container at the same time, wherein the mixing time is 6min, and the rotating speed of the closed container is 2000r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 30 ℃ for 13min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecylbenzene polyoxyethylene ether, and stirring at high speed under ultrasonic conditions for 17 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 10% of isooctane, 20% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 10% of isoamylene, 0.02% of additive and 9.98% of methanol.

The high clean fuel obtained by this example was much lower in cost than the existing fuel, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than the existing fuel, wherein the octane number was 93, the combustion value was 12730kcal/kg, the benzene content was 0.4g/kwh, the oxygen content was 1.32g/kwh, the sulfur content was 4.4g/kwh, and the water content of the primer solution was 38 μg after 30 days of standing in a jar ^―1 。

Example 13

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 29 ℃ and injecting high-pressure air of 98kpa into the container, wherein the mixing time is 9min, and the rotating speed of the closed container is 2300r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 55 ℃ for 14min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecylbenzene polyoxyethylene ether, and stirring at high speed under ultrasonic conditions for 18 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 30% of stable light hydrocarbon, 20% of isooctane, 15% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 9.98% of isoamylene, 0.02% of additive and 5% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 99, the combustion value was 12543kcal/kg, the benzene content was 0.32g/kwh, the oxygen content was 1.33g/kwh, the sulfur content was 3.9g/kwh, and the water content of the primer solution was 36 μg/g after 30 days of standing in a jar ^―1 。

Example 14

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 25 ℃ and injecting 80kpa of high-pressure air into the container, wherein the mixing time is 10min, and the rotating speed of the closed container is 2500r/min, so as to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring in a closed environment at 30 ℃ for 14min to obtain a second mixture;

The mass ratio of the raw materials is as follows: 40% of stable light hydrocarbon, 10% of isooctane, 15% of coal-to-aromatic hydrocarbon, 20% of petroleum mixed xylene, 8% of isoamylene, 0.02% of additive and 6.98% of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 97, the combustion value was 12658kcal/kg, the benzene content was 0.34g/kwh, the oxygen content was 1.28g/kwh, the sulfur content was 4.6g/kwh, and the water content of the primer solution increased by 33 μg g after 30 days of jar rest ^―1 。

Example 15

Injecting stable light hydrocarbon, coal aromatic hydrocarbon and methanol into a closed container rotating at a high speed for mixing at 45 ℃ and injecting high-pressure air of 70kpa into the container, wherein the mixing time is 6min, and the rotating speed of the closed container is 2800r/min to obtain a first mixture;

mixing the first mixture with isooctane and isoamylene, and stirring at 45 ℃ for 12min to obtain a second mixture;

mixing petroleum mixed xylene with the second mixture, adding dodecylbenzene polyoxyethylene ether, and stirring at high speed under ultrasonic conditions for 10 minutes to obtain a third mixture;

The mass ratio of the raw materials is as follows: 32.99 percent of stable light hydrocarbon, 12 percent of isooctane, 15 percent of coal-to-aromatic hydrocarbon, 26 percent of petroleum mixed xylene, 9 percent of isoamylene, 0.01 percent of additive and 5 percent of methanol.

The high clean fuel obtained by this example was far lower in cost than existing, burned more fully, reduced in carbon formation, improved in contamination of the groundwater quality by combustion residues, and more environmentally friendly than existing fuels, wherein the octane number was 96, the combustion value was 12655kcal/kg, the benzene content was 0.32g/kwh, the oxygen content was 1.25g/kwh, the sulfur content was 4.7g/kwh, and the water content of the primer solution increased by 40 μg g after 30 days of standing in a jar ^―1 。

Comparative example 1

The fuel for the vehicle is prepared from the following raw materials in parts by weight: 15 parts of amyl alcohol, 10 parts of isobutanol, 35 parts of n-octane, 10 parts of ethyl levulinate, 8 parts of 1-trityl imidazole, 1 part of a detergent and 0.5 part of a combustion improver; the detergent is a mixture of 30 parts by weight of 2-methylimidazole and 3 parts by weight of ethylene glycol butyl ether; the combustion improver is a mixture of 28 parts by weight of dimethyl carbonate and 1 part by weight of ethyl tertiary butyl ether.

The preparation method of the vehicle fuel comprises the following steps: mixing amyl alcohol, isobutanol, n-octane, ethyl levulinate and 1-trityl imidazole uniformly, stirring for 55min, adding a detergent and a combustion improver, continuously stirring for 30min, vacuumizing, and standing for 15 h.

The obtained fuel had an octane number of 98, a combustion value of 10659kcal/kg, a benzene content of 0.9g/kwh, an oxygen content of 2.66g/kwh, a sulfur content of 11g/kwh, and after 30 days of standing in a jar, the water content of the base solution increased by 423 μg ^―1 。

Comparative example 2

The methanol gasoline comprises the following components in percentage by mass: 73-75% of methanol, 0.004-0.006% of sodium hydroxide, 0.3-0.5% of corrosion inhibitor, 0.2-0.4% of antioxidant, 0.5-0.7% of lubricant, 3-4% of methyl tertiary butyl ether, 3-5% of petroleum ether, 0.4-0.6% of cyclohexylamine, 7-9% of naphtha, 4-6% of low-temperature ignition additive and 2-2.5% of stabilizer, wherein the stabilizer comprises butanone and glycerol, the mass ratio of the butanone to the glycerol is 2:3, the corrosion inhibitor comprises benzotriazole and oleic acid imidazoline, and the mass ratio of the benzotriazole to the oleic acid imidazoline is 2:3.

The preparation method of the methanol gasoline comprises the following steps: all the raw materials are mixed and stirred uniformly.

The obtained fuel had an octane number of 96, a combustion value of 11398kcal/kg, a benzene content of 0.82g/kwh, an oxygen content of 2.73g/kwh, a sulfur content of 12g/kwh, and an increase in water content of 382 μg after 30 days of standing in a jar ^―1 . The high clean fuels prepared in examples 1 to 15 and the fuels prepared in comparative examples 1 and 2 were subjected to the related experiments, respectively, and the results are shown in table 1:

table 1 high clean fuel comparative experiment table

The experimental data show that the high clean fuel obtained by the preparation method of the high clean fuel adopted in the embodiment of the invention has obviously reduced benzene content, oxygen content, sulfur content and the like, and is reduced by more than 50 percent compared with the prior gasoline fuel and national standard.

The high-cleanness fuel oil provided by the embodiment of the invention replaces the traditional naphtha with the stable light hydrocarbon, the heat value is higher than that of the traditional naphtha, and the evaporation performance is higher than that of the common naphtha; isoamylene provides olefin content while increasing the combustion heating value; the additive can better combine the problem of fusion of methanol and chemical raw materials; the petroleum mixed xylene has high combustion speed and is also an effective organic solvent; the coal-to-aromatics contains 10% -30% of olefin, the aromatics content reaches 50% -70%, and the aromatics content is normally provided, meanwhile, the olefins are effectively supplemented, and the combustion heat value is improved. Based on the addition of the additive dodecyl polyoxyethylene alcohol or dodecyl benzene polyoxyethylene ether, the delamination resistance effect is better.

The invention solves the problem that the traditional methanol gasoline is difficult to dissolve, has weak low-temperature resistance and low combustion heat value. The petrochemical industry and the coal chemical industry are combined, so that the tradition is broken through; improving the pollution of combustion residues to underground water quality; the invention better meets the environmental protection requirement (the contents of benzene, oxygen and sulfur are lower than the national standard requirement by 50%), and simultaneously can reduce the production cost.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.

Although embodiments of the present invention have been described in detail, it should be understood that various changes, substitutions, and alterations can be made hereto without departing from the spirit and scope of the invention.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

Claims

1. A method for preparing a highly clean fuel, comprising:

2. The method for producing a highly clean fuel according to claim 1, characterized in that,

the additive is dodecyl polyoxyethylene alcohol or dodecyl benzene polyoxyethylene ether.

3. The method for producing a highly clean fuel according to claim 1, characterized in that,

the heating condition is 25-50 ℃.

4. The method for producing a highly clean fuel according to claim 3, wherein,

the mixing time in the high-speed rotating closed container is 5-10min, and the air pressure of the high-pressure air is 35-100kpa.

5. The method for producing a highly clean fuel according to claim 4, wherein,

the rotating speed of the closed container is 1000r/min-3000r/min;

the stirring speed under the ultrasonic condition is 2500r/min-5000r/min.

6. The method for producing a highly clean fuel according to claim 1, characterized in that,

the first mixture was mixed with isooctane and isoamylene and then placed in a closed environment with stirring at 52 ℃.

7. The method for producing a highly clean fuel according to claim 1, characterized in that,

8. The method for producing a highly clean fuel according to claim 1, characterized in that,

the stirring time for high-speed stirring under the ultrasonic condition is 10-20 minutes.

9. A highly clean fuel, characterized in that the highly clean fuel is produced by the production method of the highly clean fuel according to any one of claims 1 to 8.