KR101475214B1 - Methanol alternative fuel, and producting method thereof - Google Patents

Abstract

The present invention relates to a methanol alternative fuel and a manufacturing method thereof. The methanol alternative fuel is manufactured by mixing gasoline, methanol, normal-hexane, acetone chloroform, a solvent, an oxidation and coagulation inhibitor, and a corrosion and expansion inhibitor. The manufactured methanol alternative fuel reduces exhaust quantity of noxious gas without change of engine performance of a vehicle and can contribute environmental improvement by reducing the usage of oil which is a fossil fuel.

Description

[0001] METHANOL ALTERNATIVE FUEL, AND PRODUCT METHOD THEREOF [0002]

The present invention relates to a methanol alternative fuel and a method for producing the same, and more particularly, to a methanol alternative fuel produced using gasoline and methanol as main materials and a method for producing the same.

Due to the rapid development of the economy, the penetration rate of power-driven vehicles has been steadily increasing, and Korea, which lacks energy resources, imports most of its fuel from foreign countries.

Gasoline, used as fuel for vehicles, is made from petroleum as a raw material through various complex processes of specialized facilities. However, since the gasoline has low oxygen content, there is not enough combustion in the engine. As a result, the discharged gas contains a large amount of contaminants such as HC, CO, and NOx, which causes environmental pollution. In addition, petroleum is a limited fossil fuel that can not be regenerated.

Therefore, it is necessary to study alternative fuel of clean gasoline in order to reduce dependence on fossil fuel and to reduce environmental pollution.

For example, ethanol gasoline produced by mixing common gasoline with ethanol is being studied. However, ethanol gasoline has the problem of reducing tar life and engine life when used as fuel for vehicles.

Korean Patent Registration No. 10-0525362 (filed on October 25, 2005, name: alcohol fuel composition for internal combustion engine)

An object of the present invention is to provide an alternative fuel for methanol and a method for manufacturing the same, which can reduce exhaust emission amount of noxious gas without changing the engine performance of a vehicle and reduce the amount of petroleum used as fossil fuel, And a manufacturing method thereof.

According to an aspect of the present invention, there is provided a composition including gasoline, methanol, n-hexane, acetone chloroform, a solubilizer, an antioxidant, and an anti-corrosion agent.

Wherein the gasoline comprises 38 to 85 parts by weight of the gasoline, 10 to 50 parts by weight of the methanol, 1.0 to 3.0 parts by weight of the n-hexane, 1.5 to 5.0 parts by weight of the acetone chloroform, 1.0 to 2.5 parts by weight of the solubilizer, 0.2 to 0.8 parts by weight of an anti-caking agent, and 0.2 to 1.0 parts by weight of the anti-corrosion agent.

The solubilizing agent is isobutanol.

The antioxidant is 2,6-di-tert-butylperoxide.

The anticorrosion agent is dioctyl thiophosphate.

The acetone chloroform is acetone chloroform not containing water.

And further comprises 0.1 to 0.5 parts by weight of glycerol based on the total weight of the composition.

The composition further comprises 1 to 3.2 parts by weight of dipropylene glycol or 1 to 3.2 parts by weight of diethylene glycol based on the total weight of the composition.

It is prepared by mixing gasoline, methanol, normal hexane, acetone chloroform, solubilizer, antioxidant and anti-corrosion agent at a set ratio at normal temperature and normal pressure.

The setting ratio is set to be 38 to 85 parts by weight of the gasoline, 10 to 50 parts by weight of the gasoline, 1.0 to 3.0 parts by weight of the n-hexane, 1.5 to 5.0 parts by weight of the acetone chloroform, 1.0 to 2.5 parts by weight of the solubilizer, 0.2 to 0.8 parts by weight of the antioxidant, 0.2 to 1.0 part by weight of the antifogging agent.

The present invention does not include amyl alcohol and aromatic hydrocarbons, so that the exhaust gas is clean, and since the oxygen content is high, sufficient combustion can be performed, thereby reducing the emission of contaminants such as HC, CO, and NOx.

Further, the present invention can reduce exhaust emission of noxious gases without changing the engine performance of the vehicle because the octane number is high, the acceleration performance is good, the induction period is long, and the stability is good.

Therefore, the methanol substitute fuel of the present invention is effective as a vehicle fuel which can effectively cope with regulations on automobile exhaust gas which is strengthened day by day.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The methanol substitute fuel of the present invention can reduce the emission amount of the harmful gas without changing the engine performance of the vehicle, and can contribute to the improvement of the environment by reducing the use amount of petroleum.

Methanol alternative fuels include gasoline, methanol, normal hexane, acetone chloroform, solubilizers, antioxidants, anti-corrosion agents.

Methanol substitute fuel is a mixture of 38 to 85 parts by weight of gasoline, 10 to 50 parts by weight of methanol, 1.0 to 3.0 parts by weight of n-hexane, 1.5 to 5.0 parts by weight of acetone chloroform, 1.0 to 2.5 parts by weight of solubilizer, To 0.8 parts by weight, and 0.2 to 1.0 part by weight of a corrosion inhibitor.

Gasoline has high calorific value and is combustible, so it is basically included to secure fuel economy. When the amount of gasoline is less than 38 parts by weight, it is difficult to secure the calorific value only by methanol, resulting in a rapid decrease in fuel consumption. On the other hand, if it is contained in an amount exceeding 85 parts by weight, it is difficult to expect an environmental improvement effect due to the methanol addition, and the exhaust emission amount of the noxious gas increases.

Methanol is included to reduce emissions of noxious gases without changing engine performance. The higher the content of methanol, the higher the oxygen content, the more completely the combustion can be done, which can reduce the emissions of HC, CO and NO _x . In addition, it does not contain aromatic hydrocarbons such as MTBE (Methy Tertialry Butyl Ether) and xylene, .

In addition, methanol costs less than half the price of gasoline, and when included in gasoline, it improves fuel efficiency, cleans up the fuel system, and freezes in the winter. Further, the content of the methanol is high increases the oxygen content complete combustion is possible, and can reduce the emission of HC, CO, NO _X.

When methanol is contained in an amount of less than 10 parts by weight, the effect is insufficient. When the amount of methanol is more than 50 parts by weight, the amount of generated heat of methanol is lower than that of gasoline. Therefore, when methanol is contained in an amount exceeding 50 parts by weight, there arises a problem that the size of the fuel tank must be increased in order to improve fuel economy. Further, when methanol is contained in an amount exceeding 50 parts by weight, the rotation stability until warming up the engine at a low temperature is poor.

N-Hexane is burned together with oxygen to generate a lot of heat and is included to improve fuel efficiency. When the content of normal hexane is less than 1.0 part by weight, the effect of improving the fuel efficiency is insufficient. When the amount of the normal hexane is more than 3.0 parts by weight, economical efficiency is not obtained.

Acetone chloroform is used as an emulsifier to solve the problem of phase separation of methanol and gasoline. When acetone chloroform is contained in an amount less than 1.5 parts by weight, emulsification is difficult. When it is contained in an amount exceeding 5.0 parts by weight, there is no economical effect and the physical properties of fuel are affected.

The acetone chloroform is preferably acetone chloroform not containing water. When water is contained in the fuel due to acetone chloroform, incomplete combustion and reduction of the amount of heat of the fuel occur.

Solubilizers are included to dissolve antioxidants and corrosion inhibitors. If the solubilizer is contained in an amount of less than 1.0 part by weight, the effect is not obtained. If the amount of the solubilizing agent is more than 2.5 parts by weight, the effect is saturated and the physical properties of the fuel are affected. It is preferable to use isobutanol as the dissolving agent.

This embodiment does not use amyl alcohol as a dissolver to prevent the danger that may occur when fuel containing methanol is leaked. Amyl alcohol is highly toxic and pollutes the environment.

Antioxidants are used to prevent oxidation of fuel by oxygen in the air and to maintain viscosity. When the antioxidant is contained in an amount of less than 0.2 part by weight, the effect of preventing oxidation and the effect of maintaining viscosity are insufficient, and when the antioxidant is contained in an amount exceeding 0.8 parts by weight, the physical properties of the fuel are affected. Since the viscosity of the fuel greatly affects the injection state of the fuel injection valve, it is important to ensure an appropriate viscosity.

The antioxidant is preferably 2,6-di-tert-butylperoxide. A commercially available antioxidant may be used as the antioxidant.

The corrosion inhibitor prevents rust and corrosion of the engine parts of the vehicle due to the methanol contained in the fuel. If the corrosion inhibitor is contained in an amount less than 0.2 part by weight, the effect is not effective. If the corrosion inhibitor is contained in an amount exceeding 1.0 part by weight, the effect is saturated and environmental pollution problems may occur due to harmful substances such as sulfur and phosphorus contained in the corrosion inhibitor .

The anti-corrosive agent is preferably dioctyl thiophosphate.

In addition, antioxidants and corrosion inhibitors prevent methanol from melting the rubber used in vehicles or corroding metal used in fuel tanks, fuel lines, engines, and the like.

And further comprises 0.1 to 0.5 parts by weight of glycerol based on the total weight of the composition. Since acetone chloroform without water has a high freezing point, glycerol is added to improve disadvantages of high freezing point when glycerol is used. The fuel should have a low freezing point so that it can flow at low temperatures.

And further 1 to 3.2 parts by weight of dipropylene glycol or diethylene glycol based on the total weight of the composition.

Dipropylene glycol is included as a solvent and viscosity reducing agent. If the amount of the dipropylene glycol exceeds 1 part by weight, the above effect can be exhibited. If the amount exceeds 3.2 parts by weight, the effect is saturated and it is not economical.

Diethylene glycol is added as an antifreeze to lower the solidification point of the fuel. When the amount of the diethylene glycol exceeds 1 part by weight, the above effect can be exhibited. When the amount exceeds 3.2 parts by weight, the effect is saturated.

On the other hand, a method for producing a methanol-replacement fuel includes steps of producing an additive for mixing additives such as n-hexane, acetone chloroform, a dissolver, an antioxidant, an anti-corrosion agent, glycerol, dipropylene glycol or diethylene glycol, A step of producing denatured methanol to produce denatured methanol by mixing with methanol, and a step of producing an alternative fuel by mixing denatured methanol and gasoline.

The step of preparing the additive comprises the steps of preparing an antioxidant and an anticorrosion agent by dissolving in a dissolving agent, preparing a mixture by adding glycerol, acetone chloroform, n-hexane and dipropyl lincleol in the tank in order, And a solvent in which an antioxidant and an anti-corrosion agent are dissolved is injected into a tank in which chloroform, normal hexane and dipropyl lincleol are mixed and mixed.

Methanol is completely mixed with water. When there is a certain amount of water, it separates from gasoline when it is mixed with gasoline and is phase separated into two layers. If a mixture of separated methanol and water enters the engine, operational faults such as engine shutdown may occur.

In addition, methanol has a higher polarity than a hydrocarbon component and has high corrosion resistance to metals due to the nature of hydrogen bonding, which may cause engine wear and corrosion and cause problems in a vehicle.

In addition, methanol swells various rubber materials used in fuel pumps, gaskets, o-rings, seals, etc., and may cause problems in the vehicle by lowering the elongation strength.

Therefore, when the methanol is mixed with gasoline, it is not phase-separated, and when used as an alternative fuel, the additive is mixed with methanol so as not to cause engine wear, corrosion, roughness and deterioration of rubber material.

Hereinafter, the present invention will be described in detail with reference to examples.

[Example 1]

93 # gasoline 78kg, methanol 15kg, n-hexane 2kg, acetone chloroform 1.5kg, isobutyl alcohol 2kg, glycerol 0.1kg, dipropylene glycol 1kg, T501 (2,6-butyl peroxide) 0.2kg, T203 (dioctyl thiophosphate ).

T501 and T203 are dissolved in isobutyl alcohol under normal temperature and normal pressure conditions. Next, glycerol, acetone chloroform, n-hexane and dipropylene glycol are added to the tank in order and mixed by shaking for 20 minutes. Next, an additive is prepared by injecting isobutyl alcohol in which T501 and T203 are dissolved in a tank containing a mixture of glycerol, acetone chloroform, normal hexane and dipropylene glycol, and shaking for 5 minutes.

The prepared additives are injected into a tank containing methanol and mixed by shaking for 15 minutes to produce denatured methanol. Next, metamorphic methanol is mixed with conventional 93 # gasoline and mixed by shaking for 30 minutes to produce an alternative gasoline feedstock.

Table 1 shows the results of measuring the performance values of the prepared gasoline substitute raw material and the conventional 93 # gasoline.

Item
unit Example 1 93 # Gasoline
(Standard requirement) Octane (RON) 95 93 or more Lead content g / L Not detected (less than 0.0025) 0.005 or more
Symptom
Flow
point 10% evaporation temperature ℃ 55 70 or less 50% evaporation temperature ℃ 91 120 or less 90% evaporation temperature ℃ 164 190 or less Distillation end point ℃ 190 205 or less Residual amount % One 2 or less Vapor pressure kPa 70 74 or less The actual colloid Mg / 100 ml 2 Less than 5 Induction period min Greater than 480 More than 480 Sulfur content % (Mass ratio) 0.012 0.015 or less brimstone / Pass Pass Copper corrosion
(50 < 0 > C, 3h) / 1a Less than 1a Soluble acid or salt / none none Contaminants in machinery / none none benzene % (Volume ratio) 0.6 1.0 or less Aromatic hydrocarbon content % (Volume ratio) 14 40 or less Olefin content % (Volume ratio) 13 30 or less Manganese content g / L 0.004 0.016 or less Iron content g / L 0.0007 0.01 or less

According to Table 1, it can be seen that the anti-knocking performance of Example 1 is good according to the high octane number. The anti-knocking means that the engine suppresses the knocking phenomenon which causes an abnormal explosion, and the octane number is a measure indicating the degree of anti-knocking.

In addition, it is confirmed that the evaporation temperature of Example 1 is relatively low, the acceleration performance is good, and the content of various harmful substances is low as compared with 93 # gasoline.

Thus, it can be seen that Example 1 can replace 93 # petrol, which is a conventional gasoline.

Particularly, Example 1 has a high oxygen content and does not contain contaminants such as aromatic hydrocarbons, so that the exhaust gas is clean.

Table 2 below shows measured exhaust emissions when using Example 1 and conventional 93 # gasoline.

Item
Example 1 93 # Petrol Technical Requirement Revolutions per minute
(RPM) CO (%) HC Revolutions per minute
(RPM) CO (%) HC Slow average 850 0 2.0 ppm 850 = <1% = &Lt; 200 ppm Fast average 3500 0.02 3.37 ppm 3500 = &Lt; 0.5% = &Lt; 150 ppm

According to Table 2, it is confirmed that the performance of methanol alternative fuel obtained in Example 1 is good, and the pollutant emission of the exhaust gas is significantly lower than that of the conventional 93 # gasoline, so that it belongs to clean energy.

[Example 2]

93 # # 85 kg of petrol, 10 kg of methanol, 1 kg of normal hexane, 1.5 kg of acetone chloroform, 1 kg of isobutyl alcohol, 0.1 kg of glycerol, 1 kg of dipropylene glycol, 0.2 kg of T501 (2,6-butyl peroxide) ).

T501 and T203 are dissolved in isobutyl alcohol under normal temperature and normal pressure conditions. Next, glycerol, acetone chloroform, n-hexane and dipropylene glycol are added to the tank in order and mixed by shaking for 20 minutes. Next, an additive is prepared by injecting isobutyl alcohol in which T501 and T203 are dissolved in a tank containing a mixture of glycerol, acetone chloroform, normal hexane and dipropylene glycol, and shaking for 5 minutes.

The prepared additives are injected into a tank containing methanol and mixed by shaking for 15 minutes to produce denatured methanol. Next, metamorphic methanol is mixed with conventional 93 # gasoline and mixed by shaking for 30 minutes to produce an alternative gasoline feedstock.

Table 3 shows the results of measuring the performance values of the gasoline substitute raw material of the manufactured Example 2 and the conventional 93 # gasoline.

Item
unit Example 2 93 # Gasoline
(Standard requirement) Octane (RON) 94 93 or more Lead content g / L Not detected (less than 0.0025) 0.005 or more
Symptom
Flow
point 10% evaporation temperature ℃ 56 70 or less 50% evaporation temperature ℃ 92 120 or less 90% evaporation temperature ℃ 163 190 or less Distillation end point ℃ 192 205 or less Residual amount % One 2 or less Vapor pressure kPa 71 74 or less The actual colloid Mg / 100 ml 2 Less than 5 Induction period min Greater than 480 More than 480 Sulfur content % (Mass ratio) 0.014 0.015 or less brimstone / Pass Pass Copper corrosion
(50 &lt; 0 &gt; C, 3h) / 1a Less than 1a Soluble acid or salt / none none Contaminants in machinery / none none benzene % (Volume ratio) 0.7 1.0 or less Aromatic hydrocarbon content % (Volume ratio) 15 40 or less Olefin content % (Volume ratio) 17 30 or less Manganese content g / L 0.008 0.016 or less Iron content g / L 0.0009 0.01 or less

Table 4 below shows measured emissions of exhaust gas when using Example 2 and conventional 93 # gasoline.

Item
Example 2 93 # Petrol Technical Requirement Revolutions per minute
(RPM) CO (%) HC Revolutions per minute
(RPM) CO (%) HC Slow average 850 0 2.0 ppm 850 = <1% = &Lt; 200 ppm Fast average 3500 0.04 3.37 ppm 3500 = &Lt; 0.5% = &Lt; 150 ppm

According to Tables 3 and 4, as in Example 1, the antiknocking performance of Example 2 is good, the evaporation temperature is relatively low as compared with 93 # gasoline, the acceleration performance is good, and the content of various harmful substances is low Is confirmed.

[Comparative Example]

93 # 85 kg of gasoline, 10 kg of methanol, 2.5 kg of amyl alcohol, 1.5 kg of xylene, and 1 kg of ethylene glycol.

Additives are prepared by mixing xylene, ethylene glycol and amyl alcohol at room temperature and normal pressure.

The prepared additives are injected into a tank containing methanol and mixed by shaking for 15 minutes to produce denatured methanol. Next, metamorphic methanol is mixed with conventional 93 # gasoline and mixed by shaking for 30 minutes to produce an alternative gasoline feedstock.

The alternative fuels produced in the comparative example were found to be equivalent to gasoline of octane number 90 in terms of combustion and power performance, and the content of aromatic hydrocarbons and benzene was lower than that of octane number 90. However, the amyl alcohol and xylene used as additives have very strong toxicity and are not suitable as an alternative raw material for gasoline.

As can be seen from the experimental results, it is confirmed that the present invention can be used as a substitute raw material for gasoline replacing conventional gasoline and also has an environmental improvement function.

In addition, since the methanol alternative fuel of the present invention is manufactured under the conditions of normal temperature and normal pressure, the manufacturing facility and the manufacturing process are simple. In addition, the purchase of additives for producing modified methanol is wide and the manufacturing cost is low.

Therefore, the methanol-replacement fuel of the present invention can be used as a substitute for conventional gasoline, can contribute to environmental improvement, can be manufactured without retrofitting the equipment of a gas station today, and can be mixed with existing gasoline at an arbitrary ratio There is great strength in application.

 It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. will be.

Claims (10)

A composition comprising gasoline, methanol, n-hexane, acetone chloroform, a solubilizing agent, an antioxidant, and a corrosion inhibitor,
Wherein the anti-corrosive agent is dioctyl thiophosphate. The method according to claim 1,
With respect to the total weight of the composition,
38 to 85 parts by weight of the above gasoline,
10 to 50 parts by weight of the methanol,
1.0 to 3.0 parts by weight of the n-hexane,
1.5 to 5.0 parts by weight of acetone chloroform,
1.0 to 2.5 parts by weight of the above-
0.2 to 0.8 parts by weight of the antioxidant,
And 0.2 to 1.0 part by weight of the anti-corrosive agent. The method according to claim 1 or 2,
Wherein the solubilizing agent is isobutanol. The method according to claim 1 or 2,
Wherein the antioxidant is di-tert-butylperoxide. delete The method according to claim 1 or 2,
Wherein the acetone chloroform is acetone chloroform containing no moisture. The method of claim 2,
Further comprising 0.1 to 0.5 parts by weight of glycerol based on the total weight of the composition. The method of claim 2,
Wherein the composition further comprises 1 to 3.2 parts by weight of dipropylene glycol or 1 to 3.2 parts by weight of diethylene glycol based on the total weight of the composition. It is produced by mixing gasoline, methanol, normal hexane, acetone chloroform, solubilizer, antioxidant and anti-corrosion agent at a set ratio at normal temperature and normal pressure.
The set ratio
About the total weight of the composition
38 to 85 parts by weight of the above gasoline,
10 to 50 parts by weight of the methanol,
1.0 to 3.0 parts by weight of the n-hexane,
1.5 to 5.0 parts by weight of acetone chloroform,
1.0 to 2.5 parts by weight of the above-
0.2 to 0.8 parts by weight of the antioxidant,
And 0.2 to 1.0 part by weight of the anti-corrosive agent.



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