JPH06102787B2 - Deodorant additive for petroleum fuel oil and fuel oil - Google Patents

Description

TECHNICAL FIELD The present invention relates to a deodorant additive for petroleum-based fuel oils and fuel oils.

2. Description of the Related Art Fuel oils, especially petroleum-based fuel oils, generate peculiar unpleasant odors at the beginning of combustion and immediately after the combustion is stopped (extinction). In particular, this phenomenon is often seen in open-type oil stoves, and when the oil stoves are ignited or extinguished, a peculiar unpleasant odor is generated, and the indoor air is polluted by the unpleasant odor, which gives the occupants a significant discomfort. . Therefore, various masking agents and deodorants have been proposed.

For example, in JP-A-57-115490, a malodorous deodorant for kerosene composed of natural essential oil containing a terpene hydrocarbon is disclosed, and in JP-A-63-218796, a macrocycle such as ethylene brushlate is disclosed. Deodorant additives for kerosene including musk have been proposed respectively.

The present inventors have also found that the addition of limonene to petroleum-based fuel suppresses the malodor, and filed a patent application for the petroleum-based fuel containing limonene (Japanese Patent Application No. 1-3090).
No. 30).

However, although these masking agents and deodorants achieve some effects, they have not yet achieved sufficient deodorizing effects.

DISCLOSURE OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION The present inventor has made earnest studies on these problems, that is, the development of an additive for preventing a malodor generated at the early stage of combustion or immediately after extinguishing a petroleum fuel, and as a result, a macrocyclic ketone and a terpene It has been found that the addition of an additive mixed with a class compound to fuel oil, particularly petroleum fuel oil, can suppress the generation of a peculiar odor during ignition or extinguishing. The present invention has been made based on such findings. Therefore, an object of the present invention is to provide fuel oil,
In particular, an object is to provide an additive for fuel oil, which suppresses a bad odor generated at the early stage of combustion of petroleum-based fuel and immediately after extinction.

Means for Solving the Problem The present invention relates to a deodorant additive for petroleum-based fuel oil, which is a mixture of a macrocyclic ketone and a terpene compound, and a fuel oil to which the additive is added.

The petroleum-based fuel oil in the present invention includes a fuel oil composed of all fractions and residual oil separated from gasoline, kerosene, light oil, heavy oil or crude oil.

Macrocyclic ketones have the general formula (N represents an integer of 10 to 19), and examples of such compounds include, for example, cycloundecanone, cyclododecanone, cyclotridecanone,
Examples thereof include cyclotetradecanone, cyclopentadecanone, cyclohexadecanone, cycloheptadecane, cyclooctadecanone, cyclononadecanone and cycloeicosanone. The terpene compounds mean terpene hydrocarbons, terpene alcohols, terpene aldehydes or natural essential oils containing these,
Examples of such compounds include the following compounds.

Examples of terpene hydrocarbons include α-pinene, β-pinene, myrcene, limonene, aloocimene, ocimene, p-cymene, and the like, and terpene alcohols such as sinalol, geraniol, nerol, citronellol, terpineol, 1-menthol, and borneol. As terpene aldehydes, citronellal, citral, hydroxycitronellal, and the like, natural essential oils containing terpene compounds include orange oil, lemon oil,
Camphor oil and the like can be exemplified. These macrocyclic ketones and terpene compounds may be selected individually and mixed, or several species may be selected and mixed.
The mixing ratio of macrocyclic ketone: terpene compound is 1:
It is preferably 500 to 1: 1, preferably 1: 200 to 1:50, and the amount added to the fuel oil is 10 ppm to 1.0% by weight, preferably 200 to 2000 ppm as the mixture.

If the added amount is less than 10 ppm, a sufficient deodorizing effect cannot be obtained, and if the added amount is increased, the bad odor is reduced.
On the contrary, adverse effects such as the malodor of additives in the room occur.
Further, it is not economically preferable to use a large amount. Therefore, the amount added to the fuel oil in the present invention is preferably within the above range.

Although some effect can be obtained by adding the macrocyclic ketone or the terpene compound alone to the fuel oil, the macrocyclic ketone and the terpene compound are used in combination, and both are mixed at 1:50.
The effect is markedly increased by mixing at a mixing ratio of 0 to 1: 1.

Regarding this point, for example, esters such as isobornyl acetate have a slight deodorizing effect when added alone, but when they are used in combination with kerosene in combination with macrocyclic ketones, they will ignite more than non-added kerosene. There is a bad odor at the time of fire extinguishing and no synergistic effect occurs. On the other hand, by adding the macrocyclic ketone and the terpene compound in combination to the fuel oil as in the present invention, synergistically preventing the generation of an offensive odor during ignition or extinguishing as described in a comparative test to be described later. Is what you can do.

Next, the present invention will be specifically described with reference to examples.

Example 1 Cyclododecanone and limonene were mixed at a weight ratio of 1: 100 to obtain a deodorant additive for petroleum fuel oil.

0.1% by weight of this additive was added to white kerosene and uniformly mixed, the kerosene was burned with a kerosene lamp, and the odor of steam generated after extinguishing was evaluated by sensory tests by 20 panelists.

For the evaluation, a comparative test was conducted by a sensory test on white kerosene to which the additive of Example 1 was added and non-added white kerosene (Comparative Example 1). In the sensory test, a odorless box made of metal was used, and the odors of steam of Example 1 and Comparative Example 1 (denoted as kerosene containing an additive) were alternately changed in order to be "very good".
It was evaluated on a four-point scale of "worse". The results are shown in Table 1.

Examples 2 to 10 Macrocyclic ketones as shown in Table 1 and terpene compounds were mixed in the proportions described therein to obtain deodorant additives for petroleum fuel oils.

This additive was added to white kerosene in the amounts shown in Table 1 and a comparative test was conducted in the same manner as in Example 1. As a comparative example, as shown in Table 1, white kerosene containing only macrocyclic ketone alone or white kerosene containing only terpene compound alone was used. The results are shown in Table 1.

From the results shown in Table 1, the white kerosene containing the macrocyclic ketones according to Examples 1 to 10 and the terpene compound added in combination had a "very good" odor of the generated steam, whereas the macrocyclic ketones And when no terpene compound was added (Comparative Example 1), when only a macrocyclic ketone was added (Comparative Examples 2 to 4), and when only a terpene compound was added (Comparative Examples 5 to 8). "No" or "good" accounted for the majority, and it was found that there was a markedly remarkable deodorant improvement effect only when both were used together as in the examples.

EFFECTS OF THE INVENTION The present invention relates to a deodorant additive for petroleum-based fuel oil in which a macrocyclic ketone and a terpene compound are mixed. When such an additive is used, these compounds are not added. Or, when compared with the case where they are used alone, a remarkable deodorizing effect is exhibited at the time of ignition or extinguishing of fuel oil, particularly petroleum-based fuel oil, and the generation of the malodor can be suppressed. Therefore, the deodorant additive of the present invention is useful as an additive for petroleum fuel oil such as petroleum stoves.

Claims (3)

[Claims] 1. A deodorant additive for petroleum fuel oil, which is obtained by mixing one or more macrocyclic ketones with one or more terpene compounds. 2. A petroleum-based fuel oil obtained by adding one or more macrocyclic ketons and one or more terpene compounds to a petroleum-based fuel oil. 3. The deodorant additive for petroleum fuel oil according to claim 1, wherein the mixing ratio of the macrocyclic ketone and the terpene compound is in the range of 1: 500 to 1: 1.