A gasoline octane number additive, its preparation method and application

Abstract

The present invention belongs to the technical field of gasoline additives, and relates to a gasoline octane number additive, a preparation method thereof and an application. By weight, the gasoline octane number additive comprises: 35-55 parts of mixed heavy aromatics, 18-35 parts of p-xylene, and 5-20 parts of 3,5-xylenol. Among them, the mixed heavy aromatics comprise: 20-35 parts of mesitylene, 20-30 parts of pseudocumene, 15-25 parts of durene, 10-20 parts of dicyclopentadiene, and 5-10 parts of naphthalene. The gasoline octane number additive further comprises 1-6 parts of a regulator. The preparation method of the gasoline octane number additive comprises: mixing each component by mass, stirring, and standing to obtain the gasoline octane number additive. The product of the present invention can effectively improve the gasoline octane number, and has the advantages of simple process, good anti-knock performance, unrestricted usage amount, and environmental protection.

Description

Technical Field

[0001] The present invention belongs to the technical field of gasoline additives, and particularly relates to a gasoline octane number additive, its preparation method and application. Background Art

[0002] With the rapid development of China's economy, the demand for energy is increasing day by day. Especially with the rapid development of the automobile industry, the quality requirements for gasoline are getting higher and higher, thus putting forward higher requirements for gasoline octane number additives.

[0003] The octane number is an important index to measure the anti-knock performance of carbureted engine fuels and is listed first in the specifications of vehicle gasoline. The higher the octane number of gasoline, the better the anti-knock performance, and the corresponding compression ratio of the engine can also be increased. In other words, if the octane number of gasoline is continuously increased, the automobile manufacturer can increase the compression ratio of the engine accordingly. In this way, not only can the engine power be increased and the driving mileage be increased, but also fuel can be saved, which has good economic significance.

[0004] At present, the octane number of gasoline is generally low. The octane number of ordinary oil-based mixed aromatics is only about 105. When using mixed aromatics to increase the octane number of gasoline, the amount of mixed aromatics used is large, but the increase in octane number is very limited. If added in large doses, it may cause other indicators to exceed the standard, affecting the quality of gasoline, and will also occupy the storage capacity when the gasoline sales are sluggish.

[0005] As a gasoline octane number additive, MTBE (methyl tert-butyl ether) has an octane number of only about 115, with a large addition amount and low efficiency. When the addition amount is 10%, it can only increase the octane number by about 2-3 units. If used in large quantities, it will cause the oxygen content in gasoline to be too high, which does not meet the index that the oxygen content should not be greater than 2.7% stipulated in the gasoline standard, thus limiting the use of MTBE. In addition, MTBE seriously pollutes groundwater, is difficult to degrade, and high-content MTBE has carcinogenic effects, which will cause great harm to the environment and people's health.

[0006] Therefore, there is an urgent need to provide a gasoline octane number additive with a high octane number, unrestricted usage amount, energy conservation and consumption reduction, and environmental protection. Summary of the Invention

[0007] The present invention aims to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or creation condition. The present invention provides a gasoline octane number additive, its preparation method and application. The octane number of this additive is as high as about 300. When the addition amount is 1%, it can increase the octane number by about 2-3 units, which is applicable to improving the octane number of various component gasolines, and has a simple process, good anti-knock effect, unrestricted usage amount, clean and environmental protection.

[0008] Inventive concept of the present invention: The present invention uses mixed heavy aromatics and p-xylene as the main raw materials. The octane numbers of both the mixed heavy aromatics and the p-xylene are as high as about 300. Using high-octane mixed heavy aromatics and p-xylene as the main raw materials can effectively increase the octane number of the additive, making it have a significant effect on increasing the octane numbers of different components or different grades of base oils, and is applicable to increasing the octane numbers of various component gasoline. In addition, the present invention also adds a regulator, which is used to adjust the octane number and antioxidant property of the gasoline octane number additive. When used in combination with mixed heavy aromatics and p-xylene, it can further increase the octane number of the gasoline octane number additive through synergistic effects.

[0009] Therefore, the present invention provides a gasoline octane number additive.

[0010] Specifically, a gasoline octane number additive, by weight, includes:

[0011] Mixed heavy aromatics 35 - 55 parts;

[0012] p-Xylene 18 - 35 parts;

[0013] 3,5-Xylenol 5 - 20 parts;

[0014] Among them, by weight, the mixed heavy aromatics include: mesitylene 20 - 35 parts, pseudocumene 20 - 30 parts, durene 15 - 25 parts, dicyclopentadiene 10 - 20 parts, naphthalene 5 - 10 parts.

[0015] Preferably, a gasoline octane number additive, by weight, includes:

[0016] Mixed heavy aromatics 40 - 50 parts;

[0017] p-Xylene 20 - 30 parts;

[0018] 3,5-Xylenol 5 - 15 parts;

[0019] Among them, by weight, the mixed heavy aromatics include: mesitylene 25 - 32 parts, pseudocumene 22 - 28 parts, durene 18 - 22 parts, dicyclopentadiene 12 - 18 parts, naphthalene 6 - 9 parts.

[0020] Preferably, the gasoline octane number additive further includes 1 - 6 parts of a regulator.

[0021] More preferably, the gasoline octane number additive further includes 2 - 5 parts of a regulator.

[0022] Preferably, the regulator is selected from at least one of 2,6 - di - tert - butyl - p - cresol, N,N'-di - sec - butyl - p - phenylenediamine, methyl tert - butyl ether, ethyl tert - butyl ether, dimethyl malonate, isobutenylamide isooctyl ester, methyl methoxyisobutyrate, succinimide, cyclopentane, nitrobenzene.

[0023] Specifically, the regulator is used to adjust the octane number, antioxidant property, and anti - knocking property of the gasoline octane number additive. When used in combination with mixed heavy aromatics and p - xylene, it can significantly improve the octane number of the gasoline octane number additive through synergistic effects.

[0024] The present invention also provides a preparation method of a gasoline octane number additive.

[0025] Specifically, the preparation method of the gasoline octane number additive includes the following steps:

[0026] By weight, mix the above - mentioned components, stir, and then let it stand to obtain the gasoline octane number additive.

[0027] Preferably, the stirring time is 25 - 70 min.

[0028] More preferably, the stirring time is 30 - 60 min.

[0029] Preferably, the standing time is 18 - 35 min.

[0030] More preferably, the standing time is 20 - 30 min.

[0031] Preferably, the preparation method of the mixed heavy aromatics includes the following steps: By weight, mix mesitylene, pseudocumene, durene, dicyclopentadiene, and naphthalene, stir, and then let it stand to obtain the mixed heavy aromatics.

[0032] Preferably, the stirring time is 30 - 70 min.

[0033] More preferably, the stirring time is 35 - 60 min.

[0034] Preferably, the standing time is 18 - 35 min.

[0035] More preferably, the standing time is 20 - 30 min.

[0036] The present invention also provides a gasoline, which includes the gasoline octane number additive.

[0037] Compared with the prior art, the beneficial effects of the technical solution provided by the present invention are as follows:

[0038] The gasoline octane number additive of the present invention has an octane number as high as about 300. When the addition amount is 1%, the octane number can be increased by about 2-3 units. It is applicable to improving the octane number of various component gasolines, and the usage amount is not restricted and can be added in any required proportion.

[0039] The gasoline octane number additive of the present invention has a significant effect on improving the octane number of different components or different grade base oils. When using the product of the present invention to adjust low-grade gasoline to 95# or 98#, no equipment investment is required, no chemical reaction process is needed. Only the addition ratio needs to be determined according to the gap between the base oil and the target oil to be adjusted, and then it can be evenly mixed. The process is simple and the cost is low.

[0040] The gasoline high-octane number additive of the present invention is an organic ashless additive, which does not contain any metal elements, does not damage the engine, has a good energy-saving and consumption-reducing effect. When the engine is at 2000 r / min, the fuel consumption can be reduced by 1.6%. Moreover, it is clean, environmentally friendly, does not produce toxic and harmful substances, and is friendly to the environment and human body. Specific embodiments

[0041] In order to make those skilled in the art more clearly understand the technical solution of the present invention, the following examples are listed for illustration. It should be noted that the following examples do not limit the protection scope required by the present invention.

[0042] In the following examples, the raw materials, reagents or devices used can be obtained from conventional commercial channels or can be obtained by existing known methods without special instructions.

[0043] Example 1

[0044] A gasoline octane number additive, calculated by weight, its raw material components include:

[0045]

[0046] Among them, calculated by weight, the raw material components of the mixed heavy aromatics include: 22 parts of mesitylene, 22 parts of pseudocumene, 18 parts of durene, 12 parts of dicyclopentadiene, and 6 parts of naphthalene.

[0047] The preparation method of the mixed heavy aromatics is to mix mesitylene, pseudocumene, durene, dicyclopentadiene, and naphthalene by weight, stir for 32 min, and let stand for 20 min to obtain.

[0048] The regulator is 0.3 part of 2,6-di-tert-butyl-p-cresol, 0.8 part of methyl tert-butyl ether, 0.3 part of succinimide, 0.2 part of isobutenylamide isoheptyl ester, 0.1 part of methyl methoxyisobutyrate, and 0.3 part of nitrobenzene.

[0049] A preparation method of a gasoline octane number additive includes the following steps:

[0050] Mix the components by weight, stir for 28 min, and let stand for 22 min to obtain a gasoline octane number additive.

[0051] Example 2

[0052] A gasoline octane number additive, by weight, includes:

[0053]

[0054] Among them, by weight, the mixed heavy aromatics include: 28 parts of mesitylene, 26 parts of pseudocumene, 20 parts of durene, 15 parts of dicyclopentadiene, and 8 parts of naphthalene.

[0055] The preparation method of the mixed heavy aromatics is to mix mesitylene, pseudocumene, durene, dicyclopentadiene, and naphthalene by weight, stir for 50 min, and let stand for 28 min to obtain.

[0056] The regulator is 0.5 part of N,N'-di-sec-butyl-p-phenylenediamine, 1 part of ethyl tert-butyl ether, 0.8 part of cyclopentane, 0.6 part of isobutenylamide isoheptane, 0.5 part of methyl methoxyisobutyrate, and 0.6 part of nitrobenzene.

[0057] A preparation method of a gasoline octane number additive includes the following steps:

[0058] Mix the components by weight, stir for 45 min, and let stand for 28 min to obtain a gasoline octane number additive.

[0059] Example 3

[0060] A gasoline octane number additive, by weight, its raw material components include:

[0061]

[0062] Among them, by weight, the raw material components of the mixed heavy aromatics include: 34 parts of mesitylene, 29 parts of pseudocumene, 24 parts of durene, 19 parts of dicyclopentadiene, and 8 parts of naphthalene.

[0063] The preparation method of the mixed heavy aromatics is to mix mesitylene, pseudocumene, durene, dicyclopentadiene, and naphthalene by weight, stir for 58 min, and let stand for 30 min to obtain.

[0064] The regulator is 0.8 part of 2,6-di-tert-butyl-p-cresol, 1.4 parts of dimethyl malonate, 0.3 part of succinimide, 0.3 part of cyclopentane, 0.5 part of isobutenylamide isoheptane, 0.5 part of methyl methoxyisobutyrate, and 1.2 parts of nitrobenzene.

[0065] A preparation method of a gasoline octane number additive, comprising the following steps:

[0066] By weight, mix each component, stir for 55 min, and let stand for 32 min to obtain the gasoline octane number additive.

[0067] Example 4

[0068] A gasoline octane number additive, by weight, its raw material components include:

[0069] Mixed heavy aromatics: 45 parts;

[0070] p-Xylene: 28 parts;

[0071] 3,5-Xylenol: 12 parts.

[0072] Among them, by weight, the mixed heavy aromatics include: 28 parts of mesitylene, 26 parts of pseudocumene, 20 parts of durene, 15 parts of dicyclopentadiene, and 8 parts of naphthalene.

[0073] The preparation method of the mixed heavy aromatics is as follows: by weight, mix mesitylene, pseudocumene, durene, dicyclopentadiene, and naphthalene, stir for 68 min, and let stand for 28 min to obtain.

[0074] A preparation method of a gasoline octane number additive, comprising the following steps:

[0075] By weight, mix each component, stir for 65 min, and let stand for 28 min to obtain the gasoline octane number additive.

[0076] Comparative Example 1

[0077] The difference between Comparative Example 1 and Example 2 is only that in the components of the gasoline octane number additive in Comparative Example 1, an equal amount of o-xylene is used to replace p-xylene, and the types and addition amounts of other raw materials and the preparation method of the gasoline octane number additive are the same as those in Example 2.

[0078] Comparative Example 2

[0079] The difference between Comparative Example 2 and Example 2 is only that in the components of the gasoline octane number additive in Comparative Example 2, an equal amount of mesitylene is used to replace the mixed heavy aromatics, and the types and addition amounts of other raw materials and the preparation method of the gasoline octane number additive are the same as those in Example 2.

[0080] Performance test

[0081] Add the gasoline octane number additives prepared in Examples 1-4 and Comparative Examples 1-2 of the present invention to 92# gasoline, with an addition amount of 1.5% for all. After fully stirring for 60 min, gasoline is prepared. The prepared gasoline is detected according to the GB17930-2011 standard for motor gasoline, and the research octane number RON and anti-knock index are shown in Table 1.

[0082] Table 1

[0083]

[0084] As can be seen from Table 1, after adding the gasoline octane number additives prepared in Examples 1-3 to 92# gasoline at an addition amount of 1.5% and through simple mechanical mixing, the research octane number of the gasoline is increased to meet the standard of 95# gasoline, and the anti-knock index is also increased. However, after adding the gasoline octane number additives prepared in Comparative Examples 1-2 to 92# gasoline at the same addition amount, although the research octane number of the gasoline is increased, it does not reach the standard of 95# gasoline, and the anti-knock index is also lower than that of Examples 1-3.

[0085] The difference between Example 4 and Example 2 is only that Example 4 does not add a regulator. After adding it to 92# gasoline at the same addition amount, the research octane number and anti-knock index of Example 4 are both lower than those of Example 2.

[0086] Therefore, the present invention uses high-octane mixed heavy aromatics and p-xylene as the main raw materials, which can effectively increase the octane number of gasoline octane number additives, have a significant effect on increasing the octane number of low-grade base oils, and are applicable to increasing the octane number of various component gasolines. Moreover, the regulator added in the present invention can adjust the octane number and antioxidant property of gasoline octane number additives. When used in combination with mixed heavy aromatics and p-xylene, the synergistic effect can further increase the octane number of gasoline octane number additives. When the addition amount of the gasoline octane number additive is 1%, the gasoline octane number can be increased by about 2-3 units, which is applicable to increasing the octane number of various component gasolines, and the usage amount is not limited and can be added in any required proportion.

[0087] Add the gasoline octane number additive prepared in Example 2 of the present invention to 92# gasoline, with an addition amount of 3%. After fully stirring for 60 min, the obtained gasoline is marked as the test sample, and the 92# gasoline without adding the gasoline octane number additive of the present invention is marked as the blank sample. The test results of various physical and chemical indexes of the gasoline are shown in Table 2.

[0088] Table 2

[0089]

[0090]

[0091] As can be seen from Table 2, after adding the gasoline octane number additive prepared by the present invention to 92# gasoline, the octane number of the gasoline is increased, and 98# gasoline is obtained, and there are no adverse changes in other physical and chemical indexes, and all indexes meet the requirements of the GB17930-2011 motor gasoline standard. And there is no need for equipment investment. After adding in a certain proportion according to the demand and mixing evenly, the process is simple and the cost is low.

Claims

1. A gasoline octane number additive, characterized in that, By weight, its raw material components include: 38 parts of mixed heavy aromatics; 20 parts of p-xylene; 8 parts of 3,5-xylenol; 2 parts of regulator; Among them, by weight, the raw material components of the mixed heavy aromatics include: 22 parts of mesitylene, 22 parts of pseudocumene, 18 parts of durene, 12 parts of dicyclopentadiene, 6 parts of naphthalene; The regulator is 0.3 part of 2,6-di-tert-butyl-p-cresol, 0.8 part of methyl tert-butyl ether, 0.3 part of succinimide, 0.2 part of isobutenylamide isoheptyl ester, 0.1 part of methyl methoxyisobutyrate, 0.3 part of nitrobenzene; Or, by weight, the raw material components of the gasoline octane number additive include: 45 parts of mixed heavy aromatics; 28 parts of p-xylene; 12 parts of 3,5-xylenol; 4 parts of regulator; Among them, by weight, the mixed heavy aromatics include: 28 parts of mesitylene, 26 parts of pseudocumene, 20 parts of durene, 15 parts of dicyclopentadiene, 8 parts of naphthalene; The regulator is 0.5 part of N,N'-di-sec-butyl-p-phenylenediamine, 1 part of ethyl tert-butyl ether, 0.8 part of cyclopentane, 0.6 part of isobutenylamide isoheptyl ester, 0.5 part of methyl methoxyisobutyrate, 0.6 part of nitrobenzene; Or, by weight, the raw material components of the gasoline octane number additive include: 54 parts of mixed heavy aromatics; 34 parts of p-xylene; 18 parts of 3,5-xylenol; 5 parts of regulator; Among them, by weight, the raw material components of the mixed heavy aromatics include: 34 parts of mesitylene, 29 parts of pseudocumene, 24 parts of durene, 19 parts of dicyclopentadiene, 8 parts of naphthalene; The regulator is 0.8 part of 2,6-di-tert-butyl-p-cresol, 1.4 parts of dimethyl malonate, 0.3 part of succinimide, 0.3 part of cyclopentane, 0.5 part of isobutenylamide isoheptyl ester, 0.5 part of methyl methoxyisobutyrate, 1.2 parts of nitrobenzene.

2. The preparation method of the gasoline octane number additive according to claim 1, characterized in that, It includes the following steps: By weight, mix the raw material components of the gasoline octane number additive, stir, and let stand to obtain it.

3. The preparation method according to claim 2, characterized in that, The preparation method of the mixed heavy aromatics includes the following steps: By weight, mix mesitylene, pseudocumene, durene, dicyclopentadiene, and naphthalene, stir, and let stand to obtain mixed heavy aromatics.

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