JP2000351981A - Gel fuel composition - Google Patents

Abstract

(57) [Abstract] [Problem] To reduce the generation of off-flavors and black smoke during combustion,
To provide a gel fuel composition with improved safety such as visualization of flame and suppression of flame height. SOLUTION: The gel fuel composition of the present invention comprises a gel shape maintaining composition (preferably a gel silicone polymer) 10
~ 80% by weight, and 90 to 20% by weight of a petroleum fraction having a difference between a 10% distillation temperature and a 90% distillation temperature of 10 ° C or less and an aromatic content of 5% by volume or less. According to the present invention having such a configuration, an unpleasant smell or black smoke is not generated at the time of combustion, and the flame can be visually confirmed and its height is low and high safety, so that ignitability when burning firewood or charcoal is improved. It is particularly useful as a gel fuel to be adhered to its surface for enhancement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a gel fuel composition, and more particularly to a composition of a gel fuel used for igniting a solid fuel such as firewood or charcoal.

[0002]

[Prior Art] Firewood for cooking at outdoor leisure
Opportunities for using solid fuels such as charcoal are increasing. As a fuel for easily igniting such a solid fuel, a gel fuel that can be deposited on the solid fuel and has good ignitability is commercially available. Such a gel-like fuel is obtained by combining a gel-like holding composition with petroleum, vegetable oil, alcohol, or the like as a fuel.

[0003]

When igniting firewood or the like using such a gel-like fuel, the fuel may give off odor or black smoke, which is a problem in use. Also, flames from gel-like fuels can burn higher and faster than flames from solid fuels such as firewood.
In some cases, the flame was difficult to see, requiring safety precautions when igniting.

[0004] The present invention has been made to solve the above problems and provides a gel fuel which does not generate odor or black smoke at the time of ignition and has high safety at the time of ignition.

[0005]

Means for Solving the Problems As a result of a detailed study of the composition of a gel fuel, the present inventor has found that a gel liquid suitable for such a purpose can be obtained by adding an appropriate liquid fuel to the gel holding composition. The present inventors have found that a liquid fuel can be obtained and completed the present invention.

That is, the gel-like fuel composition according to the present invention has a gel-like holding composition of 10 to 80% by weight, a difference between a 10% distillation temperature and a 90% distillation temperature of 10 ° C. or less, and an aromatic fuel composition. 90 to 20% by weight of a petroleum fraction having a content of 5% by volume or less, and the gel-like holding composition is preferably a silicone polymer.

[0007]

Since the present invention uses a petroleum fraction having a narrow boiling point range and substantially no aromatics as a liquid fuel, there is no generation of offensive odor or black smoke at the time of ignition. It does not cause discomfort during use. In addition, the flame due to the gel fuel composition is a color that can be easily confirmed with the naked eye,
In addition, since the height of the flame is uniform, there is little danger in use.

Further, by using a silicone polymer as the gel-like holding composition, it is possible to suppress the generation of offensive odor, black smoke, and the like due to the burning of the composition, so that discomfort particularly occurs during use. There is no. Therefore, when the gel fuel composition of the present invention is used for igniting firewood, charcoal, etc., no odor or the like is generated, and the flame is easy to confirm, so that the safety is high and the ignition without discomfort becomes possible. .

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION [Gel-Retaining Composition] As the gel-retaining composition, any composition may be used as long as it forms a gel and does not generate black smoke or the like upon burning. it can. As such a composition, a polymer of a metal alkoxide, particularly a silicone polymer which is a polymer of a silicon alkoxide, is preferably used. When a polymer of silicon alkoxide is used, only silicon oxide is generated after combustion, and there is no concern about environmental pollution due to waste.

The gel-like holding composition of the silicone polymer is
It is preferably obtained by polymerizing a silicon alkoxide having an alkoxy group having 1 to 4 carbon atoms, such as tetraethoxysilane, tetraisoproxysilane, tetra-n-butoxysilane or tetramethoxysilane, in a polar solvent.
When the carbon number of the alkyl group of the silicon alkoxide is 1 to 4, particularly when the carbon number is 2, flammability as an igniting agent is appropriate. As the polar solvent, a mixed solvent of water and alcohol is preferably used.

[Petroleum fraction] The petroleum fraction used in the present invention is:
The difference between the 10% and 90% distillation temperatures is 10 ° C. or less, and the aromatic content is 5% by volume or less, preferably 7 ° C. or less and 1% by volume or less, respectively. The 90% distillation temperature is preferably 300 ° C. or less, particularly preferably 220 ° C. to 280 ° C., from the viewpoint of ignitability and safety. Further, the hydrogen / carbon atom ratio is preferably from 2.0 to 2.2. Such a petroleum fraction can be obtained by precision distillation or the like. In particular, a fraction containing 90% by weight or more of normal paraffin having 14 to 15 carbon atoms is preferably used.

[Gel-like fuel composition] The above-mentioned gel-like holding composition (10 to 80% by weight) and a petroleum fraction (90 to 20% by weight) are mixed and stirred by well-known means to obtain a uniform composition. Thereby, the gel fuel composition of the present invention can be obtained. The proportion of petroleum fraction in the gel fuel composition is 90%
The content is preferably from 20 to 40% by weight, and more preferably from 80 to 40% by weight from the viewpoints of the stability of the gel fuel and the reliability of ignition of charcoal, firewood, and the like. preferable. The gel fuel composition thus obtained can be put into a container with an open top and used as it is as a fuel, but in particular, a gel fuel used for igniting solid fuels such as firewood and charcoal. It can be suitably used as a fuel.

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

Example 1 [Gel-like holding composition] 1 to 2 drops of hydrochloric acid was added to 8.4 cc of water, 17.6 g of ethanol and 20.0 g of tetraethoxysilane were sequentially added, and the mixture was stirred and maintained at 50 ° C. A gel-like silicone polymer (that is, a gel-like holding composition) was obtained.

[Liquid fuel] As liquid fuel, paraffin, kerosene, heavy oil A, and vegetable oil whose properties are shown in Table 1 were used. In addition, normal paraffin hydrocarbons having 14 to 15 carbon atoms were used as the paraffin. Further, for each liquid fuel, a combustion test was performed under the same conditions, and the odor, flame color, flame length, and generation of black smoke during combustion were evaluated or measured. The results are shown in the lower part of Table 1.

[0015]

[Table 1]

As is clear from the results, the difference between the 10% distillation temperature and the 90% distillation temperature is 10 ° C. or less, and paraffin containing almost no aromatics produces odor and black smoke during combustion. The flame was not visually observed and the height was low, indicating high safety.

[Gel Fuel] The above four kinds of liquid fuels 4 were added to 100 parts by weight of the gel holding composition obtained above.
By adding 0 parts by weight (mixing and stirring), four types of gel fuels were prepared.

When a combustion test was performed on each of the gel fuels under the same conditions, results showing the same tendency as those of the above-described liquid fuel combustion test were obtained. In other words, the gel fuel made of paraffin showed good results with respect to odor, flame color, flame length, generation of black smoke, and the like. However, gel fuel made of kerosene, heavy oil A or vegetable oil,
All the fuels emit an unpleasant odor when burning, and kerosene and heavy fuel oil A are visible flames, but the flame is long, black smoke is generated, and the gel fuel made of vegetable oil is unpleasant odor. In addition, the flame was hard to see.

[0019]

Example 2 A commercially available silicone polymer gel having siloxane as a main chain (hereinafter referred to as a commercially available gel) was used as a gel-like holding composition, and the paraffin or kerosene was placed in a beaker at a ratio shown in Table 2; 10 with a magnetic stirrer
Time, mixing, stirring, uniform gel fuel composition (hereinafter, referred to as
Gel fuels) 1 to 5 were prepared. Prepared gel fuel 1-5
And a commercially available gel fuel were subjected to the following combustion test. 2 g of each gel fuel was collected in a petri dish-shaped iron container having an inner diameter of 5 cm, and was spread so that the surface became flat. The fire was lit and the burning time, flame height and black smoke length were measured. The results are shown in the lower part of Table 2.

[0020]

[Table 2]

Table 2 shows the following. The gel fuels 1 to 4 corresponding to the present invention have a longer burning time than the gel fuels 5 made of kerosene and the commercially available gel fuels, can reliably ignite firewood and the like, and can reduce the height of the flame. Was. Although black smoke is slightly generated, it is clearly lower and less than the gel fuel 5 and the commercially available gel fuel.

[0022]

According to the present invention, there is provided a gel fuel composition containing a specific amount of a gel-like holding composition such as a silicone polymer and a specific petroleum fraction. According to the present invention having such a configuration, the ignitability is good, the generation of unpleasant odor and black smoke during combustion is small, and the flame can be visually confirmed, and the height is low and the safety is excellent. It is particularly useful as a gel fuel that is deposited on its surface to increase their ignitability during combustion.

Claims (3)

[Claims] 1 to 10% by weight of a gel-like holding composition;
Petroleum fraction 90 having a difference between the 10% distillation temperature and the 90% distillation temperature of 10 ° C. or less and an aromatic content of 5% by volume or less.
-20% by weight of a gel fuel composition. 2. The gel fuel composition according to claim 1, wherein the gel holding composition is a silicone polymer. 3. The 90% distillation temperature of the petroleum fraction is 220 to 2
The gel fuel composition according to claim 1, wherein the temperature is 80 ° C. 4.