JPS58164695A - Additive for fuel to dissolve alcohol - Google Patents

Abstract

PURPOSE:To provide the titled additive capable of dissolving alcohol in petroleum fuel in a stabilized state, consisting of polyoxyethylene stearyl ether, 6-30C monohydric alcohol and nitrobenzene (derivative). CONSTITUTION:The additive consists of 2-20wt% polyoxyethylene stearyl ether with an HLB value of 3 or lower, 0.5-20wt% 6-30C monohydric alcohol and the balance of nitrobenzene (derivative). The addition of additive of this composition makes it possible to dissolve ethanol in light oil in a stabilized state even when water comes into it and dissolve alcohol in petroleum fuel such as methanol in gasoline and ethanol in kerosene in a stabilized state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an alcohol-soluble fuel additive for stably dissolving methanol, ethanol, etc. in petroleum fuels such as gasoline, kerosene, IIM oil, and A heavy oil. When alcohol is used as a fuel for internal combustion engines, the most practical method is to dissolve it in petroleum-based fuel (gasoline, oil, etc.).

This is because Jin's method does not require any modification of the engine itself or the fuel supply system. For example, in a diesel engine, ethanol is added to
Even though it dissolves at 0 to 2016 phase, it also maintains the desired low heptad value (ignitability), and there is little decrease in viscosity, so it can be put to practical use without damaging the fuel pump. - Mixing of alcohol and petroleum-based fuels. Mixed fuel of gasoline and ethanol has already been put into practical use in the United States and Brazil. However, in our humid country, gasoline and ethanol separate due to moisture, so it has not been put into practical use. In order to put the fuel to practical use,
Attempts were made to add surfactants, but this did not prevent the separation of gasoline and methanol due to moisture.
/-L, KgLLgr: DOE Report B
CP, OtsuF 3683-Ill(']8)) Research was also conducted on a mixed fuel of test oil and ethanol, but it was shown that diesel oil and ethanol could be separated by the amount of water in the fuel. There is (A.

Elranl- et al.: A1r*c*LturaL E
nlinmarssy act.

P34 ('79)) The present invention was made in view of the above circumstances, and its purpose is to provide an alcohol-dissolving fuel additive that can quickly dissolve alcohol in petroleum-based fuel. Hereinafter, the present invention will be explained with reference to the drawings. ◎The present invention selects the system of ethanol and light oil as examples that are least soluble in alcohol and petroleum-based fuel9, and uses this system even in water. It is an additive that dissolves stably. The formulation of the fuel additive for alcohol dissolution according to the present invention is determined as follows. A predetermined amount of diesel oil and ethanol are blended, and various surfactants are added to this. Stir and mix with a shaker and measure the amount of separation after leaving it for one month. This separation amount - 〇 measurement is carried out using the graduated cylinder 1 shown in Figure 181. Note that 2 in Figure 1 is gold, 3 is gold. is the separation layer, and 4 is the dissolved layer.The smaller the amount of separation, the better the additive.The sample gas oil has the components shown in the table below.

The surfactant is polyoxyethylene stearyl ether C, H8,0 French (OCHt'11
．． ), -10B (hereinafter abbreviated as PO5E) was selected. The PO3H of keratin has different l1LB values (balance of lipophilic groups and hydrophilic groups) depending on the molecular weight.

Therefore, the next experiment was conducted to select the most suitable MLB value.

Light oil and ethanol were mixed at a volume ratio of 1:1, 3 weights of POIX was added thereto, and the above test was conducted. As a result, the MLB of PO3H was determined as shown in figure IN2.
It was found that @ is preferably 3 or less.

Next, the volume ratio of light oil and ethanol was set to 4:1.

Add 11 volumes of distilled water to this and conduct a separation test under conditions close to actual fuel fL.

As a result, as shown in Figure 3, 8- is also separated when 6cpoSE is added, but the separation becomes less when higher alcohols are added. ■1-octatool (C,H,,OR) ■l-dodecanol (CIA,
on) ■Comparing with 1-hexadodecanol (C, H, OB), it can be seen that the one with a larger number of carbon atoms is better. In addition to this experiment, for example, ij5, 6 dodecanediol (
'J/@@ (0H)C1l (OE)CJImya7,
8 to middle subcanediol (CJ*-(()j/)C1i
-(0B)C@HI#) and other diols #i were tested, but the separation was greater than with 1-dodecanol.

By combining a surfactant and a higher alcohol, diesel oil and ethanol can be dissolved in water at a fraction of the time, but the cost of additives becomes too high to be practical. Therefore, ethanol dissolves in the main component, the separated phase, and An attempt was made to create a ratio increaser that has the effect of making it closer to that of light oil.Inexpensive density increasers include nitrobenzene or its derivatives.The volume ratio of light oil and ethanol was 4:I, and distilled water was added to the mixture. Figure 4 shows the good results of an experiment with the addition of nitrobenzene to pO5E 3 weight mixture. 0 with heavy addition of nol 3
When 3 weights of higher alcohols were added, 13 weights of nitrobenzene was added to completely solve the problem.0Also, it did not adversely affect combustion.The present invention has been described in detail above. , HLB value 3 or less lyoxyethylene stearyl ether 2 to 201119,
Higher monohydric alcohol α5-201 with carbon number 6-30
1111. oL7t is an alcohol-dissolving fuel additive with a residual amount of nitrobenzene or its derivatives. Therefore, the additive with this composition can stably dissolve oil and ethanol even when water is mixed in. This makes it possible to stably dissolve alcohol in petroleum-based fuels such as gasoline and methanol, and kerosene and ethanol.

[Brief explanation of the drawing]

Figure 1 is a drawing of the separation amount measuring device, and Figure 2 is the H of PO3H.
Figure 3 shows the relationship between the LB value and the solubility of ethanol, Figure 3 shows the amount of higher alcohol added and the amount separated, and Figure 4 shows the relationship between the amount of nitrobenzene added and the amount separated.〇Applicant: Komatsu Co., Ltd. Manufacturer's agent Masaaki Yonehara Patent attorney Tadashi Softki ill Figure 2 02468 Tomi 0 Koto 214
1PO5E "1-IL841'

Claims (1)

[Scope of Claims] Diethylene stearyl ether 2-20% by weight S with an HLB value of 3 or less, and a ^-class monohydric alcohol α5-20% S with a vertical prime number of 6-3°. Fuel additive for alcohol dissolution with a residual amount of nitrobene or its derivatives〇