KR102078740B1 - Gel or solid alcohol fuel composition and method for preparing gel or solid alcohol fuel - Google Patents

Abstract

The present invention relates to a fuel composition for preparing a gelled or solidified fuel, comprising 10 to 70% by weight of a calorific agent of polyhydric alcohol, 0.1 to 5% by weight of cellulose thickener and the balance of at least one alcohol of methanol and ethanol It provides a gelled alcohol fuel composition comprising.

Description

GEL OR SOLID ALCOHOL FUEL COMPOSITION AND METHOD FOR PREPARING GEL OR SOLID ALCOHOL FUEL}

The present invention relates to a gelled or solidified methyl alcohol fuel composition having excellent calories and a method for producing the methyl alcohol fuel.

Gelling or solidifying alcohol fuel is used as a heating fuel for curing concrete in winter or as a fire igniter in outdoor activities.

Semi-solid gelling fuels made by gelling or solidifying alcohols are fuels developed in view of problems such as low storage stability, low calorific value, and short burning time which are conventionally used in methyl alcohol fuel. In addition, it is also a fuel produced by replacing the solid paraffin-based solid fuel prepared to replace the conventional methyl alcohol fuel.

The gelled or solidified fuel solves all problems caused by the conventional methyl alcohol fuel or solid paraffin-based solid fuel. Since the gelling or solidifying fuel is cohesive even when spilled, the gelled or solidified fuel is not easily leaked, so the risk of fire is very low. have. In addition, the calorific value of the combustion is increased, and thus the combustion time is greatly increased, and thus, the fuel can be said to be an advanced fuel compared to the conventionally known methyl alcohol or solid paraffinic solid fuels in terms of direct combustion.

However, the gelling or solidifying fuel provided in the prior art is composed mostly of alcohol such as methanol or ethanol, and has been used by mixing a small amount of carbomer (carbomer) as a thickener. Since the calorific value is low, there is a demand for the necessity of raising the calorific value.

On the other hand, conventional gelling or solidified alcohol fuel requires a process of stirring for a long time after adding the thickener in the gelation process. In particular, carbomers which are generally used as thickeners are used in addition to water, and when the carbomer is added to water, there is a need to heat them during stirring. Carbomers also have properties that are sensitive to pH. As a result, much time is required to increase the viscosity, and it is also necessary to maintain the temperature and pH to increase productivity in the manufacturing process and further increase the cost.

In one embodiment, the present invention provides a gelled or solidified alcohol fuel capable of increasing calorie content with respect to conventional gelled or solidified alcohol fuels, thereby increasing fuel combustion time.

In addition, an embodiment of the present invention is to provide a gel or solid alcohol fuel composition and a method for preparing a gel or solid alcohol fuel, which can omit a long stirring process for increasing in the process of producing a gel or solid alcohol fuel. .

In one aspect, the present invention provides a gelled or solidified alcohol fuel composition, wherein the gelled or solidified alcohol fuel composition comprises 10 to 70% by weight of a calorific agent of at least one of polyhydric alcohol, and 0.1 to 5% by weight of cellulose thickener. And the balance includes at least one alcohol of methanol and ethanol.

The polyhydric alcohol may be at least one selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerin, regenerated glycerin, dihydric alcohol and trihydric alcohol.

The cellulosic thickener may be at least one of hydroxy methyl cellulose, hydroxy ethyl cellulose and hydroxy propyl methyl cellulose.

The fuel composition may further include 0.1 to 5% by weight of a reaction initiator with respect to a total of 100% by weight of the caloric increasing agent, the cellulose thickener and the alcohol.

The reaction initiator is preferably a strong base such as NaOH or KOH, NaOH dissolved in alcohol.

The fuel composition is at least one selected from the group consisting of hydrated styrene thermoplastic elastomer, potassium carbonate, H ₂ Mg ₃ (SiO ₃ ) ₄ , Mg ₃ Si ₄ O ₁₀ (OH) ₂ , titanium oxide The solidifying agent may further comprise 1 to 5% by weight based on 100% by weight of the fuel composition.

In another aspect, the present invention provides a method for producing a gelled or solidified alcohol fuel, the method of the present invention is 10 to 70% by weight calorie of polyhydric alcohol, 0.1 to 5% by weight of cellulose thickener and the balance methanol and Mixing at least one alcohol in ethanol to form a fuel composition and injecting at least one reaction initiator of NaOH, KOH and NaOH dissolved in alcohol to 100 wt% of the fuel composition to gelate or solidify Steps.

The gelation or solidification may be performed for 5 to 50 seconds.

The polyhydric alcohol may be at least one selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerin, regenerated glycerin, dihydric alcohol and trihydric alcohol.

The cellulosic thickener may be at least one of hydroxy methyl cellulose, hydroxy ethyl cellulose and hydroxy propyl methyl cellulose.

The gelling or solidifying step is selected from the group consisting of hydrated styrene thermoplastic elastomer, potassium carbonate, H ₂ Mg ₃ (SiO ₃ ) ₄ , Mg ₃ Si ₄ O ₁₀ (OH) ₂ , titanium oxide At least one solidifying agent may further include 1 to 5% by weight based on 100% by weight of the fuel composition.

According to the present invention, the calorific value of the gelled or solidified alcohol fuel is high, thereby increasing the combustion time, and eventually, the amount of methyl alcohol fuel, which is mainly used toxic substances, can be reduced.

The gelled or solidified alcohol fuel composition of the present invention can perform gelation or solidification in a short time, thereby providing an effect of shortening the fuel production time, and thus, improving productivity.

In addition, the gelled or solidified alcohol fuel can be made quickly, and can be produced quickly only by stirring without using a separate heat source, thereby ensuring safety.

The present invention seeks to provide a fuel composition with increased calories and combustion duration compared to conventional gelled or solidified alcohol fuels. EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated concretely.

Gelled or solidified alcohol fuel compositions of the present invention include alcohols, calorie enhancers and thickeners.

The alcohol is the main fuel component for functioning as a fuel. The alcohol may be methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, second amyl alcohol, second butyl alcohol, third butyl alcohol, normal amyl alcohol, iso amyl alcohol, second amyl alcohol, third amyl alcohol. And normal hexyl alcohol and the like. Any one of these may be used, or two or more thereof may be mixed and used. It is preferable to use methanol, safe ethanol or mixtures thereof having a good value ratio.

When methyl alcohol as described above is used as the main component of the fuel, the amount of heat is usually about 18.2 MJ / L. However, in the case of having such a range of heat, especially when used as heating fuel for curing concrete in winter, there is a problem in that a large amount of gelling or solidifying alcohol fuel must be used.

Accordingly, the present invention includes a calorie increasing agent for increasing the calories. The caloric increasing agent may be a polyhydric alcohol mixture. The calorie increasing agent of the polyhydric alcohol has a calorie of 24 to 42 MJ / L, and when used in combination, the caloric increase may cause insufficient calorie content when the alcohol is used alone.

The caloric increasing agent is, for example, a polyhydric alcohol of a polymer, and examples thereof include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerin, regenerated glycerin, dihydric alcohol, and trihydric alcohol. If necessary, it may further include a liquid paraffin.

The caloric increasing agent, such as polyhydric alcohol or liquid paraffin, may be used in an amount ranging from 10 to 70% by weight in 100% by weight of the gelled or solidified alcohol fuel composition. When the content of the caloric increasing agent is less than 10% by weight, the calorific synergistic effect due to the use of the caloric increasing agent is not sufficient, and when it exceeds 70% by weight, the content of methyl alcohol is relatively reduced. This is undesirable because of the problem of lowering combustibility.

On the other hand, the gelled or solidified alcohol fuel composition of the present invention includes a thickener for gelling or solidifying. The thickener can be suitably used in the present invention as long as it is commonly used for the increase of gelling or solidifying fuel, and carbopool, cellulose and the like can be mentioned.

Carbopul as the thickener is about 30 minutes of increasing time, is sensitive to temperature and pH in the increase of viscosity, and has a well-releasing property. On the other hand, the cellulose-based as a thickening agent takes 30 minutes to 8 hours to increase, and also makes it viscous with respect to the additional material added after the increasing.

It is more preferable in this invention to use cellulose among such thickeners. When the cellulose is used as a thickener, when a small amount of the reaction initiator described below is generally applied, the viscosity can be increased significantly faster than the time required for increasing the viscosity, thereby shortening the time for increasing the viscosity. Further, a separate operation such as raising the temperature in order to increase the viscosity is not required.

Suitable celluloses as the thickener include, for example, hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropylmethyl cellulose, and the like, which can be used alone or in combination.

The thickener may be included in an amount of 0.1 to 5% by weight in 100% by weight of the gelled or solidified alcohol fuel composition. When the content of the thickener is used in less than 0.1% by weight, there is a problem that the viscosity is too weak, if it exceeds 5% by weight there is a problem that the work is hardened when the product is solidified in the container. By appropriately adjusting the amount of the thickener used in the above content range, it is possible to prepare a gelled or solidified alcohol fuel, or to prepare an alcoholic alcohol of solidified.

In the gelled or solidified alcohol fuel composition, the balance excluding the calorific agent such as polyhydric alcohol and the thickener is alcohol.

The fuel composition provided by this invention contains alcohol as a main component of a fuel, and can increase calorie | heat amount by including it with calorie increasing agents, such as polyhydric alcohol. In the case of using the existing methyl alcohol, it shows 10,400 Kcal of heat and combustion duration of about 6 to 7 hours when burning 17 liters. 9 to 12 hours of combustion duration can be provided. Therefore, the gelled or solidified fuel by the fuel composition of the present invention can provide a significantly higher calorie value and a duration compared to the case of using a conventional fuel which does not contain a calorific agent such as polyhydric alcohol.

Furthermore, the gelled fuel obtained by the present invention has a viscosity in the range of 55000 to 100,000 cps, specific gravity of 0.85 to 1.125 (25 ° C / 25 ° C), and a pH of 7 to 8.5.

If necessary, to further manufacture a solidified fuel may further comprise a refining agent. The solidifying agent may be used to have a function of increasing the viscosity to solidify, to provide a heat generating reinforcement function. The solidifying agent includes at least one selected from the group consisting of hydrated styrene thermoplastic elastomer, potassium carbonate, H ₂ Mg ₃ (SiO ₃ ) ₄ , Mg ₃ Si ₄ O ₁₀ (OH) ₂ , and titanium oxide Can be mentioned. These solidifying agents may be added in an amount of 1 to 5% by weight based on 100% by weight of the fuel composition of alcohol, caloric increaser and thickener.

Gelling or solidifying alcohol fuels can be prepared by mixing such fuel compositions and gelling or solidifying by increasing the viscosity. In order to increase the viscosity, it may be carried out by stirring as is commonly used. The stirring may be performed at room temperature, as well as to increase the viscosity by stirring in a state heated to a temperature of 45 ℃ or less. At this time, the stirring may be performed for 15 minutes or more, for example, 30 minutes to 8 hours, 30 minutes to 3 hours.

In preparing the gelled or solidified alcohol fuel, the fuel composition of the present invention may further include a reaction initiator. The reaction initiator may promote the reaction for gelling or solidifying the gelling or solidifying alcohol fuel composition, thereby achieving gelation or solidification of the alcohol fuel composition in a short time. Thereby, the manufacturing time of a gelling or solidified alcohol fuel can be shortened significantly, Furthermore, the heating process required as needed for gelation can be skipped. Therefore, the productivity improvement and the manufacturing cost reduction effect of a gelled alcohol fuel can be acquired. Such an effect can be obtained especially when using a cellulose type as a thickener.

As the reaction initiator, it is preferable to use strong bases such as NaOH and KOH, NaOH dissolved in alcohol, and the like. These may be used alone, or may be used by mixing. In the case of adding these reaction initiators, a gelation reaction occurs from the time of addition, and gelation or solidification can be achieved by stirring for a time of 3 minutes or less, for example, 5 to 90 seconds or 5 to 50 seconds.

The reaction initiator may include a reaction initiator in an amount of 0.1 to 5% by weight based on 100% by weight of the caloric increaser, the thickener and the alcohol. When the content of the reaction initiator is included in less than 0.1% by weight, the effect of increasing the reaction initiation rate is insignificant, and when the content exceeds 5% by weight, it is preferable that the flame is released, and it is added within the above range.

If necessary, if necessary to prepare a solidified fuel may be added with the reaction initiator.

The gelled alcohol fuel of the present invention can maintain a constant gel state through agitation simply by further adding methyl alcohol after gelation.

Example

Hereinafter, the present invention will be described in more detail with reference to Examples. The following examples show one example of the present invention, which is not intended to limit the present invention.

Example 1

300 ml of an aqueous 80% regenerated aqueous solution of regenerated glycerin was added to 600 ml of methanol under stirring, and stirring was continued.

Subsequently, a thickener solution prepared by adding 2 g of hydroxyethyl cellulose as a thickener to 100 ml of water while maintaining stirring was added to the methanol.

Next, 0.2 g of NaOH was added to the methanol solution as an initiator while maintaining the stirring to prepare a composition.

After about 30 seconds, the composition was found to gel.

The gelled fuel thus obtained was analyzed and the results are shown in Table 1 below.

At this time, the calorific value and the combustion time were measured based on the gelled fuel 17L.

Comparative example  One

2 g of carbophil was added to 200 ml of water and stirred for about 30 minutes to prepare a thickener solution. The thickener solution was stirred in 800 ml of methanol and then further stirred for 30 minutes while heating to about 45 ° C.

The gelled fuel was analyzed thereby, and the results are shown in Table 1.

The physical properties of the gel methanol fuel thus obtained were measured, and the results are shown in Table 1 below.

At this time, the calorific value and the combustion time were measured based on the gelled fuel 17L.

Evaluation item Calorific value per hour color Viscosity (cps) Specific gravity (25 ℃ / 25 ℃) Burning time (hr) pH value Example 1 About 18,000Kcal Black brown About 75000 About 1.002 About 11 8 Comparative Example 1 About 11,640Kcal Brown, white 55000 0.803 6-8 7.6

As can be seen from Table 1, the gelled fuel according to the present invention can be seen that the calorific value is significantly superior to the conventional gelling fuel, the combustion time is also significantly increased.

Claims (11)

10 to 70% by weight of a caloric increaser of polyhydric alcohol;
0.1 to 5% by weight of a cellulose thickener; And
Balance at least one alcohol of methanol and ethanol
An alcohol fuel composition comprising a gel or solid phase. The alcohol fuel composition of claim 1, wherein the polyhydric alcohol is at least one selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol and glycerin, regenerated glycerin, dihydric alcohol and trihydric alcohol. The alcohol fuel composition of claim 1, wherein the cellulosic thickener is at least one of hydroxymethyl cellulose, hydroxy ethyl cellulose, and hydroxypropylmethyl cellulose. The alcohol fuel composition according to any one of claims 1 to 3, wherein the gelled alcohol fuel composition further comprises 0.1 to 5 parts by weight of a reaction initiator based on a total of 100 parts by weight of the calorific agent, the thickener and the alcohol. The alcohol fuel composition of claim 4, wherein the reaction initiator is at least one of NaOH, KOH, and NaOH dissolved in alcohol. The method of claim 4, wherein the styrene styrene thermoplastic elastomer is selected from the group consisting of: potassium carbonate, H ₂ Mg ₃ (SiO ₃ ) ₄ , Mg ₃ Si ₄ O ₁₀ (OH) ₂ , titanium oxide Alcohol fuel composition further comprises 1 to 5 parts by weight of at least one solidifying agent based on 100 parts by weight of the fuel composition. 10 to 50% by weight of a caloric increaser of polyhydric alcohol; 0.1 to 5% by weight of a cellulose thickener; And remaining to mix at least one alcohol of methanol and ethanol to form a fuel composition. And
Gelling or solidifying by adding 0.1 to 5 parts by weight of at least one reaction initiator of NaOH dissolved in NaOH, KOH and alcohol based on 100 parts by weight of the fuel composition
Alcohol fuel manufacturing method comprising a. 8. The method of claim 7, wherein the gelling or solidifying is performed for 5 to 90 seconds. 8. The method of claim 7, wherein the polyhydric alcohol is at least one selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerin, regenerated glycerin, dihydric alcohol and trihydric alcohol. The method of claim 7, wherein the cellulosic thickener is at least one of hydroxymethyl cellulose, hydroxy ethyl cellulose and hydroxypropylmethyl cellulose. The method of claim 7, wherein the gelling or solidifying step comprises: hydrated styrene thermoplastic elastomer, potassium carbonate, H ₂ Mg ₃ (SiO ₃ ) ₄ , Mg ₃ Si ₄ O ₁₀ (OH) ₂ , at least one solidifying agent selected from the group consisting of titanium oxide further comprises 1 to 5 parts by weight based on 100 parts by weight of the fuel composition.