JPS59126489A - Method for solidifying oil - Google Patents

Abstract

PURPOSE:To solidify waste oil or oil spilled by an accident, by mixing the oil with silica containing Si bonded with the residue of a specific univalent aliphatic or aromatic compound in the molecule. CONSTITUTION:Oil is solidified by adding a silica of formula (R is <=8C aliphatic or aromatic group) to the oil. The silica can be prepared by (1) mixing the compounds of formula Rn-Si(OR')4-n, Si(OR'')4 and R'''OH (n is 1-3; R is <=8C univalent aliphatic or aromatic group; R', R'' and R''' are <=6C aliphatic hydrocarbon group), (2) adding >=2mol of water to the mixture per 1 atom of Si, (3) subjecting the mixture to hydrolysis and polycondensation reaction in the presence of an acid catalyst, (4) heating the system at a temperature higher than the highest critical temperature among the alcohols of R'OH, R''OH and R'''OH, and (5) removing the evaporated alcohols of R'OH, R''OH and R'''OH instantaneously from the system.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for solidifying oil, particularly waste oil or oil spilled due to an accident or the like.

1 Waste oil and spilled oil are difficult to dispose of, but
It is well known that solidifying this material makes it easier to handle and recover. Conventional.

The most common method for solidifying oil for this purpose is to absorb the oil into sand, clay, expanded styrene, or the like.

However, these absorbents have the disadvantage that they have to be reused in large quantities because of their low absorption NF2, and that it takes a long time to absorb viscous oils.

In addition, in the case of incineration of absorbed waste oil or reclamation of spilled oil, 1
Furthermore, since there is a large amount of absorbent, it also has the disadvantage of requiring a large typesetting device.

As a result of extensive research in order to solve these difficulties of conventional methods, the present inventors have found that 1, 2 or 3 carbon atoms can be combined with the residue of a monovalent aliphatic or aromatic compound having 8 or less carbon atoms. After researching 1,111 cases of silica containing silica atoms in its molecular structure, they discovered that it has the property of rapidly absorbing Y-based compounds in large amounts, and achieved an invention. That is, the Yasukami Qmar of the present invention
1. An oil characterized in that silica containing in its molecular structure a silica atom in combination with a residue of a monovalent aliphatic or aromatic compound having 1, 2 or 3 carbon atoms of 8 or less is added to the oil. "method of solidifying".

The above-mentioned silica, which is conveniently used for non-inventive purposes, namely "1゜2-fold"
``Silica whose molecular structure contains a silicon atom bonded to a residue of a monovalent aliphatic or aromatic compound having 3 carbon atoms and 8 or less'' means - °d1 means molecular substance.

1 11 (However, l (residue of an aliphatic or aromatic compound having 8 or less carbon atoms) is used to produce the above-mentioned silica, for example, Rn Si
(OR')4 n (n = 1, 2 or 3), Si
(OR")4 and RMOH (where R is a monovalent residue of an aliphatic or aromatic compound having 8 or less carbon atoms, R',
At least 2 molecules of water per silicon atom are added to a mixture of R", R"' each independently representing the residue of a fatty or hard hydrocarbon compound having 6 or less carbon atoms, and hydrolysis and dehydrogenation are carried out using bleaching as a catalyst. After carrying out the condensation reaction, the R'0i-(, R'10H and R'8'OH) vaporized by heating to a temperature higher than the critical temperature of R'0i-(, R'10H and R'8'OH)
By instantly removing H, R"01 (and R"OH), it can be easily manufactured in a beam-wise manner.

The silica contained in the structure has extremely strong lipophilic properties, so it absorbs oil very quickly and can easily absorb oil in a very small amount.
It can be made into I.

In the method of the present invention, all mineral oils and animal and vegetable oils can be targeted. Practically speaking, we use common products such as tempura oil that has been used for 1 time and engine oil that has also been used for 1 time.
In many cases, the targets are machine oil, etc. that has been discharged from factories, etc., and petroleum that has been discharged on the road or into the sea at a depth of 1 m due to an accident.

Method e of the present invention (if such waste oil is solidified, there will be very little pollution to the environment and workers during collection, and a very common container such as a plastic bag and a cardboard box will suffice). It is easy to use and has the advantage of being able to be put directly into an incinerator.It is also extremely effective in absorbing and solidifying the oil with molecular grooves used in the present invention.

Examples of the present invention are shown below.

Example 11 Tetraethoxy7rane 2082 Methyltriethoxysilane 452 Ethyl Alcohol
2502 Halatoluenesulfone W
15y The above ingredients were mixed at room temperature in a 1400 cc heat-resistant glass cylinder, and without stirring, 962 ml of water was gradually poured into the mixture, and when it was allowed to stand for 1 hour, it gelled. Place this in an autoclave with contents of $21, seal it, and heat it to 260°C until the critical temperature of ethyl alcohol reaches 243°C.
After heating the autoclave for 1 hour and maintaining that temperature, the exhaust valve of the autoclave was opened to instantly release ethyl alcohol vapor.

Open the autoclave and produce silica H7 containing silicon with a methyl group of 20 to the total silicon number. Take it out, crush it lightly in a mortar, and use it for the oil solidification experiment below.

That is, each absorbent was added to and mixed with No. 102 Consolidation, and the amount of absorbent required to solidify until tank-free was compared. The result 6 is as follows.

The methyl group-containing silica of the FC1 system of the present invention absorbed more oil than other absorbents, and was able to solidify oil with a smaller volume.

Example 2 Tetraethoxineran 1252 Methyltriethoxy7ran 72guethyl alcohol
2001i'halatoluenesulfonic acid 52 The above components were mixed at room temperature in a 140 occ 111t heated glass cylinder, and while stirring, water 501 was gradually poured into the mixture and left to stand for 1 hour, resulting in gelation 1-.

This was placed in an autoclave with an internal volume of 21 and sealed, heated from the critical temperature of ethanol, 243°C, to 260°C, and while maintaining that temperature, the exhaust valve of the autoclave was opened to instantly exhaust ethyl alcohol vapor. The autoclave was opened to obtain silica 652 containing 40% of the total number of silicones substituted with the generated methyl groups. This was ground into pieces in a mortar and used in the next experiment.

Put 3009 ml of water and 109 ml of kerosene into a 500cc beaker.
While stirring gently with a red sea bream stirrer,
After sequentially administering the above 7 liters of silica until the kerosene solidified, 14 liters of water was decanted, evaporated to dryness, and the amount of residue was measured. Separate placement was 1.52. Moreover, the weight of the evaporated radish residue in the aqueous layer was 0.01. This revealed that the above-mentioned 7 Lika used in the present invention did not migrate into water at all, and the entire amount used effectively worked to solidify the oil.

Example 3 Tetraethoxy 7rane 2o21 phenyltriethquin silane 100r ethyl alcohol
2801 para-toluene sulfone ff
85' The above ingredients are mixed at room temperature in a 14 occlit hot glass cylinder and this is stirred while water is added to 64
Gradually pour in 2/ζ and leave it to stand for 1 hour to see a gelation of 2/ζ.Pour this into an autoclave with a content of 43g21 and seal it.
The autoclave was heated to 60'C, and while swimming in the warm HH, the exhaust valve of the autoclave was opened to instantly exhaust ethyl alcohol vapor.

The autoclave was opened to obtain silica 992 containing 30% of the total silicon of silicon which had been substituted with the (formed) asynyl group.

Water: i in a 5'00cc beaker as in Example 12
A 102-liter kerosene was put into the kerosene, and the above-mentioned 7-liquid (silica containing 30% of the total silicon substituted with phenyl groups) was successively added while gently stirring with a Madai tick stirrer until the kerosene solidified. The approved amount of silica added was 1.82.

Water was separated by decandation, and the water was evaporated and inverted, and the weight of the residue was measured to be 0.01. It was demonstrated that there was no migration and that all of the silica was effectively used to solidify the oil.

Agent: Patent Attorney Masao Hori

Claims (1)

[Claims] 11. Addition of silica to the oil containing silica atoms in the molecular structure with 2 or 3 carbon atoms bonded to the residue of a monovalent aliphatic or aromatic compound of 8 or less How to solidify oil.