JP6587721B2 - Fuel composite additive - Google Patents

Description

  The present invention relates to a composite fuel additive used in various fuels.

  Fossil fuel or petroleum-based fuel, which has been the basis of industrial development, including the industrial revolution, has recently been due to cost increases, resource shortages and fears of supply intervention, environmental problems, Biofuels are of particular interest as an alternative to oil-based products.

  Biofuel generally means any fuel derived from biomass. Biomass is usually produced from plant sources such as corn, beans, flaxseed, sugarcane and palm oil, but the biomass is generally sourced from all living organisms or the carbon cycle. It can be extended to those metabolic byproducts that occupy part.

  As technology and research for producing bioenergy from existing biomass, research for substituting gasoline and diesel as transport oil has been mainly conducted. In order to replace gasoline, biobutanol, which is produced by fermenting sugarcane, corn, etc., was developed.

  However, in order to use existing biobutanol as a transportation fuel as it is, there is a limit that it is inferior in stability to petroleum-based fuels, such as a problem of water mixing and a phase separation problem associated therewith. In particular, when biobutanol is used as a fuel additive, there is a problem in that a phase separation phenomenon occurs significantly as compared with other fuel additives.

  Since fossil fuels or petroleum-based fuels are different to a certain extent and still involve problems of water contamination and phase separation, the physical properties of fossil fuels such as bioalcohol, new renewable fuels and conventional gasoline / Research on composite fuel additives that can further improve chemical stability is needed.

Korean Published Patent Publication No. 10-2013-0029314 (March 22, 2013)

  The object of the present invention is to significantly delay the phase separation phenomenon even under adverse environmental conditions such as high humidity, low temperature, prolonged standing and not only prevent winter freezing by having a lower melting point, An object of the present invention is to provide a fuel composite additive having an excellent cleaning effect against impurities fixed in an engine.

  Another object of the present invention is to achieve the above-mentioned effects, so that the fuel can be used for purposes other than fuel and cause no fatal problems, for example, a fuel compound addition that makes it unusable as a drink. It is to provide an agent.

  The fuel composite additive according to the present invention includes biobutanol, a ketone compound containing one or more selected from methyl ethyl ketone, methyl isopropyl ketone, methyl isobutyl ketone and 5-methyl-3-heptanone, methyl and an ether compound containing any one or more selected from tert-butyl ether and ethyl tert-butyl ether.

  The fuel composite additive according to an example of the present invention may include 10 to 100 parts by weight of the ketone compound and 0.1 to 20 parts by weight of the ether compound with respect to 100 parts by weight of the biobutanol.

  The fuel composite additive according to an example of the present invention may further include tert-butanol.

  The fuel composite additive according to an example of the present invention may include 10 to 100 parts by weight of the tert-butanol with respect to 100 parts by weight of the biobutanol.

  The fuel composite additive according to an example of the present invention may further include denatonium benzoate.

  The fuel composite additive according to an example of the present invention may include 10 to 100 parts by weight of the tert-butanol and 0.001 to 1 part by weight of the denatonium benzoate with respect to 100 parts by weight of the biobutanol.

  In one example of the present invention, the ketone compound includes any one or two or more C4-C6 ketone compounds selected from methyl ethyl ketone, methyl isopropyl ketone, and methyl isobutyl ketone, and 5-methyl-3-heptanone. Can be included.

  In one example of the present invention, the ketone compound may include 5 to 100 parts by weight of the 5-methyl-3-heptanone with respect to 100 parts by weight of the C4-C6 ketone compound.

  The fuel composite additive according to the present invention can be used by being included in a fuel.

  In one example of the present invention, the fuel may be a gasoline fuel or an alcohol fuel.

  The fuel composite additive according to the present invention has the effect of remarkably delaying the phase separation phenomenon even under adverse environmental conditions such as high humidity, low temperature, and standing for a long period of time. In addition to the effect of preventing, there is an advantage that the cleaning effect for impurities fixed in the engine is excellent.

  In addition, the fuel composite additive according to the present invention realizes the above-described effect, thereby preventing the fuel from being used as a drink, for example, so that the fuel is not used for a purpose other than the fuel and causes a fatal problem. effective.

  Even if the effects are not explicitly mentioned in the present invention, the effects described in the specification and the inherent effects expected by the technical features of the present invention are the same as those described in the specification of the present invention. Handled.

  Hereinafter, the fuel composite additive according to the present invention will be described in detail.

  Unless otherwise defined in the technical and scientific terms used in the present invention, it has the meaning normally understood by those having ordinary knowledge in the technical field to which the present invention belongs. Descriptions of known functions and configurations that may obscure the gist are omitted.

  The singular forms of the terms used in the present invention can be construed to include the plural forms as well, unless specifically indicated otherwise.

  The unit of% used in the present invention for unknown purposes without special notice means weight%.

  The fuel composite additive according to the present invention is selected from biobutanol, methylethylketone, methylisopropylketone, methylisobutylketone and 5-methyl-3-heptanone. And a ketone compound containing any one or more of the above, and an ether containing any one or more selected from methyl tert-butyl ether and ethyl tert-butyl ether System compounds.

  The term “biobutanol” referred to in the present invention means a known general biobutanol for use as a fuel, specifically butanol produced for use as a fuel from biomass. In particular, it may be normal butanol or a butanol-based mixture containing normal butanol as a main component.

  In the fuel composite additive, the ketone-based compound and the ether-based compound are essential components for improving the phase separation delay characteristic and the engine cleaning characteristic, and phase separation into the oil component layer and the moisture layer by the penetration or mixing of moisture. It is more effective in the property of delaying the phenomenon to be performed. Specifically, when any one compound of a ketone compound and an ether compound is used alone for the fuel composite additive according to the present invention, the phase separation delay characteristic is slightly reduced. Thus, when both a ketone compound and an ether compound are used, the phase separation delay characteristic is greatly improved, and the effect of improving the engine cleaning characteristic is realized. Not only that, the melting point is maximized by mixing each component, and there is an effect that the freezing can be minimized even in an environment where the temperature is very low such as winter, and other components described later are further included. The effect can be further improved.

  The fuel composite additive according to an example of the present invention does not greatly limit the composition ratio, but in terms of sufficiently realizing the above effect, the ketone compound 10 to 100 with respect to 100 parts by weight of the biobutanol. It can contain 0.1 to 20 parts by weight of the ether compound, more preferably 20 to 80 parts by weight of the ketone compound and 1 to 7 parts by weight of the ether compound. However, this is a preferable example, and it goes without saying that the present invention is not limited thereto.

  More preferably, the ketone compound includes one or more C4-C6 ketone compounds selected from methyl ethyl ketone, methyl isopropyl ketone, and methyl isobutyl ketone, and 5-methyl-3-heptanone. preferable. Specifically, in the ketone compound, when both the C4-C6 ketone compound and 5-methyl-3-heptanone are used, it can be more effective in suppressing the phase separation phenomenon. In other words, the combined use of a ketone compound having a relatively low carbon number and a ketone compound having a high carbon number minimizes the free energy of the entire system, and the dissolved water is in the form of a micelle. Therefore, the phase separation phenomenon can be remarkably reduced even under poor environmental conditions such as high humidity, low temperature, and long-term standing in the fuel.

  When the fuel composite additive according to an example of the present invention includes the C4-C6 ketone-based compound and 5-methyl-3-heptanone, the composition ratio is not greatly limited, but the above-described effects are sufficiently obtained. In terms of realization, the ketone compound includes 5 to 100 parts by weight, preferably 10 to 60 parts by weight of the 5-methyl-3-heptanone with respect to 100 parts by weight of the C4-C6 ketone compound. Can do. However, this is a preferable example, and it goes without saying that the present invention is not limited thereto.

  The fuel composite additive according to an example of the present invention may further include tert-butanol and / or denatonium benzoate, and preferably includes both tert-butanol and denatonium benzoate. Is preferred. Specifically, when the fuel composite additive includes both tert-butanol and denatonium benzoate, the phase separation delay characteristic and the engine cleaning characteristic may be significantly improved as compared with the case where these are included alone, respectively. it can. By mixing the steric hindrance of tert-butanol with the denatonium benzoate present in the salt state, both the phase separation delay characteristic and the engine washing characteristic can be remarkably improved.

  In addition, when the fuel composite additive according to an example of the present invention contains denatonium benzoate, it has an effect of preventing the fuel from being used for purposes other than the fuel because it has a unique aroma and taste.

  When the fuel composite additive according to an example of the present invention includes tert-butanol, the composition ratio is not greatly limited, and for example, 10 to 100 parts by weight of the tert-butanol, preferably 100 parts by weight of the biobutanol. May be included at 15-60 parts by weight. However, this is a preferable example, and it goes without saying that the present invention is not limited thereto.

  When the fuel composite additive according to an example of the present invention includes denatonium benzoate, the composition ratio is not greatly limited. For example, 0.001 to 1 part by weight of the denatonium benzoate with respect to 100 parts by weight of the biobutanol, Preferably, it can contain 0.001-0.5 weight part. However, this is a preferable example, and it goes without saying that the present invention is not limited thereto.

  When the fuel composite additive according to an example of the present invention includes tert-butanol and denatonium benzoate, the composition ratio is not greatly limited. However, in terms of sufficiently realizing the above-described effect, the fuel composite additive includes: 10 to 100 parts by weight of the tert-butanol and 0.001 to 1 part by weight of the denatonium benzoate, preferably 15 to 60 parts by weight of the tert-butanol and the denatonium benzoate 0 to 100 parts by weight of the biobutanol. 0.001 to 0.5 parts by weight may be included. However, this is a preferable example, and it goes without saying that the present invention is not limited thereto.

  The fuel composite additive according to an example of the present invention may further include normal butanol depending on the case, and the content thereof may be appropriately adjusted by those skilled in the art, and is not limited.

  The fuel composite additive according to the present invention may be used by being included in various fuels such as biofuels and fossil fuels, and can be preferably used by being added to alcohol-based fuels or gasoline fuels.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, these are for describing this invention in detail, Comprising: The right range of this invention is not limited by the following Example.

[Example 1]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Example 2]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Example 3]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Example 4]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Example 5]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Example 6]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Comparative Example 1]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

[Comparative Example 2]
Each component was sufficiently stirred so as to satisfy the components and contents shown in Table 1 below, and a fuel composite additive was produced.

Evaluation of Phase Separation Delay Characteristics The fuel composite additives in Examples 1 to 6, Comparative Example 1 and Comparative Example 2 were tested by the following method to evaluate the degree of phase separation delay.

  Specifically, each fuel composite additive is put into each 100 ml test tube, and moisture (0.05%, 0.1%, 0.15%, 0.20%, 0.25%,. 30%, 0.35%, 0.40%, 0.45%, 0.50%), and vigorously shaken to forcibly mix moisture, and then left for 10 minutes to change the layer. It was confirmed. In addition, in order to finally confirm clear layer separation, the mixture was centrifuged at 1,500 rpm for 10 minutes at 20 ° C., and the scale of the layer generated in the test tube was measured.

  As shown in Table 2, in the case of Comparative Example 1 and Comparative Example 2 in which only one of the ketone compound and the ether compound was used alone, the phase separation delay characteristic was not the best, while the ketone compound In Examples 1 to 6 in which both the ether compound and the ether compound were used, the phase separation delay characteristics were remarkably improved.

  These systems are both more than in the case of Example 1 and Example 2 in which only one of the C4-C6 ketone compound and the C8 ketone compound (5-methyl-3-heptanone) is used alone. In the case of Example 3 to Example 6 used, the phase separation delay characteristic was higher.

  From the cases of Example 3 and Example 4 in Table 2, it can be seen that tert-butanol alone does not significantly affect the phase separation delay characteristics. In addition, from the cases of Example 5 and Example 6 in Table 2, it can be seen that denatonium benzoate significantly improves the phase separation delay characteristics when used with tert-butanol. Such a result is considered that the steric characteristics of tert-butanol and the salt characteristics of denatonium benzoate both acted together to greatly suppress the phase separation of the composition.

Evaluation of Engine Cleaning Characteristics Experiments were conducted by the following method in which 1% by weight of each of the fuel composite additives of Examples 1 to 6, Comparative Example 1 and Comparative Example 2 was added to gasoline, and the degree of engine cleaning characteristics was evaluated.

  Specifically, the experiment was conducted in a gasoline engine test system according to the method described in the reference number SAE # 922184 (1992) published by SAE (Society for Automotive Engineers). At this time, each experiment was performed for 5 hours under the condition of an engine speed of 3,000 rpm and 2/3 of the maximum load. At the start of each experiment, a new injector was attached to the engine, and the amount of discharge from each injector was measured with the respective needle lift before the injector was attached. At the completion of each experiment, the injector was separated and the amount released during the same needle lift was measured. The efficiency of each fuel composite additive tested was compared as a percent residue release, which was calculated by Equation 1 as follows: The results are shown in Table 2 below, and the higher the release amount, the better the engine cleaning effect.

[Formula 1]
Residue release (%) = (average injector discharge at the completion of the test / average injector new discharge) × 100

  As shown in Table 3, in Comparative Example 1 and Comparative Example 2 in which only one of a ketone compound and an ether compound was used alone, the engine cleaning characteristics were not the best, while the ketone compound and In the case of Examples 1 to 6 where both ether compounds were used, the engine cleaning characteristics were remarkably improved.

When tert-butanol was added alone as in Example 4, the engine cleaning characteristics were not significantly affected. However, when denatonium benzoate was added alone, the engine cleaning characteristics were improved. It can be seen from Table 3 that the engine cleaning properties are significantly improved when both tonium benzoate and tert-butanol are used than when denatonium benzoate is added alone.

Claims (10)

Biobutanol,
A ketone compound containing any one or two or more selected from methyl ethyl ketone, methyl isopropyl ketone, methyl isobutyl ketone and 5-methyl-3-heptanone;
A fuel composite additive comprising: an ether compound containing at least one selected from methyl tert-butyl ether and ethyl tert-butyl ether.   The fuel composite additive according to claim 1, comprising 10 to 100 parts by weight of the ketone compound and 0.1 to 20 parts by weight of the ether compound with respect to 100 parts by weight of the biobutanol.   The fuel composite additive according to claim 1, further comprising tert-butanol.   The fuel composite additive according to claim 3, comprising 10 to 100 parts by weight of the tert-butanol with respect to 100 parts by weight of the biobutanol.   The fuel composite additive according to claim 3, further comprising denatonium benzoate.   The fuel composite additive according to claim 5, comprising 10 to 100 parts by weight of the tert-butanol and 0.001 to 1 parts by weight of the denatonium benzoate with respect to 100 parts by weight of the biobutanol.   The ketone compound includes any one or two or more C4-C6 ketone compounds selected from methyl ethyl ketone, methyl isopropyl ketone, and methyl isobutyl ketone, and 5-methyl-3-heptanone. The fuel composite additive described in 1.   The fuel composite additive according to claim 7, wherein the ketone compound includes 5 to 100 parts by weight of the 5-methyl-3-heptanone with respect to 100 parts by weight of the C4-C6 ketone compound.   A fuel comprising the fuel composite additive according to any one of claims 1 to 8. The fuel according to claim 9, which is a gasoline fuel or an alcohol fuel.