JPS5916815B2 - kerosene burning wick - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a kerosene burning wick for use in oil stoves and the like.

Currently, kerosene stoves are used very often as household heating equipment.

These use kerosene as fuel, which is vaporized and burned, and the heat generated during this process is used for heating.The two types are portable stoves that release combustion gas indoors, and portable stoves that are equipped with exhaust pipes that release combustion gas outside. There are two types of pot-type stoves.

Of these, portable stoves are the most commonly used in households, and use a textile wick made of glass, cotton, or soft cloth to vaporize and burn kerosene.

However, problems with conventional wick up/down type portable stoves include tar deposits in the kerosene vaporizer, resulting in dry burning due to insufficient suction of kerosene, or inability to extinguish fires due to cessation of wick up/down operation.

In order to solve these problems, the present invention has developed a new kerosene combustion wick with greater tar suppression power as a result of extensive research into tar suppression catalysts and research into their applications.

A kerosene combustion cylinder for an up-and-down wick type portable stove must first have an appropriate amount of kerosene absorption, be oil resistant and heat resistant, and have a tar suppression effect.

The amount of kerosene taken up by the combustion wick of the present invention is essentially the same as that of conventional lamp wicks.

That is, it has been revealed that composite alkaline earth metal oxides, such as oxides with silicates, phosphates, borates, and aluminates, are effective as tar-suppressing catalysts.

Furthermore, in order to firmly adhere the catalyst to the lamp wick, it has been revealed that an inorganic binder is most suitable from the viewpoint of oil resistance and heat resistance.

That is, it has been revealed that binders made of alkali metal silicates, alumina sol, silica sol, silicates, acidic metal phosphates, or combinations thereof are effective.

The configuration and effects of the present invention will be explained in more detail below using Examples.

Example 1 An ordinary lamp wick with dimensions 3 x 15 x 80 m/m and weight 1.8 fr was used as a test piece.

The material of the lamp wick was a blended wick consisting of 20 wt% of a glass wick with a diameter of 7 to 9 μm and 80 wt% of a cotton wick.

Next, add 5% calcium silicate to lithium silicate.
A mixed solution containing wt'% was prepared.

Dip the wick prepared earlier into the solution prepared in this way,
After impregnation with catalyst and binder, dry curing was performed at 100'C for 1 hour.

Sample plate 4 in Table 1 below is a sample prepared in this manner.

(For sample All, 1 ml of calcium silicate was uniformly dispersed in 25 cc of ethanol, and the wick was impregnated and dried.

) The tar suppression effect of the obtained kerosene combustion wick was measured by the method shown in the figure.

That is, in the figure, 1 is a kerosene combustion wick obtained by the present invention, 2 is a container, and 3 is a kerosene (toomg, 4).
was an electric furnace for heating, and the temperature at the upper end of the kerosene combustion wick located approximately in the center was 170°C.

5 is a side temperature thermocouple (C, A wire).

6 is the deposited tar. After vaporizing 100 ml of kerosene, the accumulated tar was extracted with acetone ioomz, and the degree of coloring was measured by absorbance at a wavelength of 420 mμ using a spectrophotometer.

In Table 1, Samples A1-11 show the effect of calcium silicate concentration, and Samples &12-23 show the effect when the catalyst amount is fixed at 10 wt% and calcium silicate is replaced with another catalyst.

Table 1 shows that adding a complex alkaline earth metal oxide to an inorganic binder has a tar suppression effect.

It can be seen that those to which calcium silicate is added are particularly good, and the best addition amount is 5 wt% or more.

As for oil resistance, the sample from Sample Shop 5 in Table 1 was subjected to a continuous immersion test in kerosene for 6 months, but no peeling or collapse of the coating occurred.

In addition, the heat resistance is 100%, with one cycle of heating the same sample at 250℃ for 8 hours or cooling at -10℃ for 16 hours.
cycle, then heat (ioo.

Each test was repeated 10 times, each cycle consisting of quenching from 200°C into water, but no peeling of the film was observed in any of the tests.

Example 2 A lamp wick was impregnated with a mixture of 10 wt% calcium silicate and 90 wt% alumina sol aqueous solution, and dried and hardened at 100°C for 1 hour to create kerosene burning wicks that were almost the same as in Example 1. A test was conducted.

The tar suppression effect was good as shown in sample A24 in Table 1.

No peeling of the film was observed in the oil resistance and heat resistance tests.

Example 3 A lamp wick was impregnated with a mixed solution consisting of 10 wt% calcium silicate and 90 wt% silica sol aqueous solution and heated to 1 at 100°C.
After drying and curing for several hours, a kerosene combustion wick almost the same as in Example 1 was prepared and various tests were conducted.

The tar suppression effect was good as shown in Sample &25 in Table 1.

No peeling of the film was observed in the oil resistance and heat resistance tests.

Example 4 A lamp wick was impregnated with a mixture of 10 wt% calcium silicate and 90 wt% sodium silicate aqueous solution, and dried and hardened at 100°C for 1 hour to create a kerosene burning wick almost the same as in Example 1. A test was conducted.

The tar suppression effect was good as shown in sample A26 in Table 1.

No peeling of the film was observed even after extensive oil resistance and heat resistance tests.

Example 5 A lamp wick was impregnated with a mixture of 10 wt% calcium silicate and 90 wt% aluminum phosphate aqueous solution, and dried and hardened at 100°C for 1 hour to create a kerosene burning wick almost the same as in Example 1. A test was conducted.

The tar suppression effect was good as shown in sample A27 in Table 1.

No peeling of the film was observed in the oil resistance and heat resistance tests.

A kerosene combustion wick according to the present invention prepared by the method of Sample 5 in Table 1 was attached to a wick up-and-down type portable kerosene stove, and continuous combustion was performed for 8 hours a day for 3 months using kerosene mixed with 10 wt% of light oil. Although the test was carried out for a total of 750 hours, there were no problems such as incomplete combustion due to tar accumulation in the kerosene vaporizer or inability to digest due to the stoppage of wick up and down operations.

As is clear from the above results, the kerosene combustion wick according to the present invention exhibits a tar-suppressing effect and has good oil resistance and heat resistance, and the wick top-bottom porta-pull kerosene stove using this wick is extremely practical without problems caused by tar accumulation. It is of high value.

[Brief explanation of the drawing]

The figure is a sectional view of an apparatus for measuring the tar suppression effect of the kerosene combustion wick obtained according to the present invention. 1... Kerosene burning wick, 6... Tar.

Claims (1)

[Claims] 1. Kerosene combustion impregnated with one or more tar suppression catalysts selected from the group of alkaline earth metal borates, aluminates, silicates, and phosphates and an inorganic binder. core. 2. The kerosene combustion wick according to claim 1, which uses any one of alumina sol, silica sol, and silicate as the inorganic binder. 3. The kerosene combustion wick according to claim 1, wherein the weight ratio of the tar suppression catalyst to the inorganic binder is in the range from 100:0 to 5:95.