JPH0747739B2 - How to treat edible waste oil - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for treating edible waste oil. More specifically, the present invention is a method for treating edible waste oil in which edible waste oil and mineral waste oil are mixed and stirred, treated by a specific method, and burned in a burner. The present invention makes edible waste oil combustible with a burner, and in one aspect, provides a fuel obtained from edible waste oil.

[0002]

2. Description of the Related Art Today, various oily foods such as broilers and fried foods are being consumed in large quantities. However, the fact is that there is no suitable means for treating a large amount of edible waste oil generated with it. After the generation of edible waste oil, it is usually put in a drum and left for a while before it is disposed of.However, this drum can corrode and the waste oil may leak out, which is a cause of destruction of the living environment. .

As a method for treating edible waste oil, there is a method of using soap materials or feeds, but the waste oil used as a raw material for these is only a part and it is insufficient as a waste oil treatment method. Most of the waste oil is burned or melted and discarded, but this is costly and environmentally unfavorable. Therefore, the processing of edible waste oil has become a big social problem.

[0004]

The present invention has solved this problem. That is, the present invention, the edible waste oil and the mineral waste oil are mixed and stirred, heated and melted at 50 ~ 100 ℃ in the presence of an adsorbent containing animal bone powder as an active ingredient, filtered, and the filtrate is burned in the presence of water or steam. It is a method for treating edible waste oil, characterized by:

In the present invention, the edible waste oil is used for various foods such as broiler oil and oil used for frying. Mineral waste oil is used for car oil exchange,
Waste oil of mineral oil used for various purposes such as hydraulic pumps, cooling and heating, lubricating oil, insulating oil, cleaning oil, cutting oil, etc.

[0006] The edible waste oil and the mineral waste oil contain solid substances such as dust. In the present invention, it is preferable to remove these solid substances by filtering before the melting process. It is preferable to carry out separately before the mixing.

In the present invention, since edible waste oil is difficult to burn by itself, it is processed by mixing with mineral waste oil. The proportion of edible waste oil is usually 95 to 50% by weight, preferably 85 to 60% by weight, particularly preferably 80 to 70% by weight.

In the present invention, edible waste oil and mineral waste oil are mixed and stirred, and heat-melted in the presence of an adsorbent formed by using animal bone powder as a main active ingredient.

In the present invention, the adsorbent containing animal bone powder as an active ingredient is a mixture of the animal bone powder which is an active ingredient with a binder, and if necessary, other additives, and the mixture is molded into granules or powder granules and dried, It is made by firing.

As the animal bone powder used as the adsorbent, bones that have been mostly discarded in the past at livestock farms, particularly bones of animals mainly composed of hard bones such as cattle, horses and sheep, are adopted. Raw bones of these animals are treated, for example, as follows.

[0011] Raw bone is cut into a size that can be easily burned, put into a pressure cooker, and boiled at about 200 to 400 ° C for about 90 minutes. Then put this bone in a firing furnace at 900-1100 ° C
Bake for about 60 to 180 minutes, and cool in the furnace for about 60 minutes to return to room temperature or a temperature close to this. It is necessary to remove the gelatin, fat, white matter, glue, and other organic substances other than bone components that remain in the bone, because they cause oxidative rot.

By the above-mentioned boiling step, most of the organic substances attached not only to the outside but also to the inside of the pores can be separated and removed from the bone. The remaining organic substances can be completely removed by passing through the above-mentioned baking step, and at the same time, the humidity (moisture) in the bone is less than a few percent, preferably about 0%.
Can be reduced to

According to the above firing conditions, the bone is whitened and maintains the original tissue state having numerous pores. After the firing and cooling, the bone is crushed and powdered to obtain a powdery bone meal of about 20 to 200 mesh, particularly preferably 50 to 100 mesh.

In the case of raw bone, the above-mentioned bone meal gives a yield of about 40% by weight compared to the raw bone. The particles are mainly composed of calcium (about 33% by weight) and phosphorus (about 16.7% by weight).
Barium (about 1.03% by weight), sodium (about 0.76% by weight), sulfur (about 0.64% by weight), other magnesium,
It is composed of potassium, chlorine, amine, iron, etc., and countless micropores are continuously present inside and outside the particles. This bone meal is alkaline.

The binder may be any one that functions as a binder for forming animal bone powder into granules or powder granules. For example, bentonite, acid clay, activated clay, kaolin clay, sericite, pyrophyllite, refractory clay. , Montmorillonite, alumina and the like. In addition to the binder, other fillers and additives may be added if necessary.

The proportion of animal bone powder in the adsorbent is not limited as long as the adsorbent has an adsorbing action, but in view of the adsorption rate, a high proportion of animal bone powder is preferable. As a composition having a high adsorption rate, for example, animal bone powder having 50 to 80 % by weight can be mentioned. The adsorbent may be granular or powdery, and the size thereof is usually 2 to 30 mm, preferably 5 to 20 mm as long as it can be easily separated from the waste oil.

In the present invention, edible waste oil and mineral waste oil are mixed and stirred, and heated and melted at 50 to 100 ° C. in the presence of an adsorbent. By this treatment, the sulfur content and impurities in the waste oil are removed. The liquid after the heating and melting treatment is filtered and separated from the solid content to recover the waste oil after the treatment. A normal oil filter is preferably used for filtration.

A filter formed by molding the same material as the adsorbent may be used as the filter. For example, animal bone powder is mixed with a binder and, if necessary, other additives to form a mixture containing, for example, 50 to 80% by weight of animal bone powder, which is formed into granules or powder granules, dried, and fired. You may use what consists of as a filter. According to the present invention, the acid value of the filtrate can be 1 or less.

After the heat treatment, the filtrate obtained by filtration is burned in the presence of water or steam. Combustion can be in any of liquid surface combustion, wick combustion, evaporative combustion, and spray combustion, and a kerosene (petroleum) burner can be simply used.

In the present invention, combustion is carried out in the presence of water or steam, but water or steam is added to the flame or water-emulsion combustion is carried out. In the latter case, the filtrate should be 5% by mass.
~ 30% by weight of water and, if necessary, a small amount of surfactant added and stirred to disperse water droplets with a diameter of 1 to several μm in oil,
This is a method in which bubbles are generated in the oil droplets to cause the oil droplets to split. Oxidation time can be shortened by fission,
The amount of soot generated can be reduced.

[0021]

EFFECTS OF THE INVENTION According to the present invention, it is possible to burn and process edible waste oil, which conventionally has substantially no treatment means. Moreover, it is possible to burn with almost no generation of sulfur oxides and nitrogen oxides.

Further, according to the present invention, it is possible to use waste oil after specific treatment as fuel, and heat generated by combustion is used for heating greenhouses in greenhouses, pools, buildings,
It can also be used as various heat sources such as a heat source for cleaning vapor.

Claims (8)

[Claims] 1. An edible waste oil and a mineral waste oil are mixed and stirred, heated and melted at 50 to 100 ° C. in the presence of an adsorbent containing animal bone powder as an active ingredient, filtered, and the filtrate is burned in the presence of water or steam. A method for treating edible waste oil, which comprises: 2. The method according to claim 1, wherein the edible waste oil is filtered to remove solids. 3. The method according to claim 1, wherein the mineral waste oil is filtered to remove solids. 4. The method according to claim 1, wherein the animal bone meal is bone bone meal of hard bone exemplified in cattle, horses, sheep and the like. 5. The adsorbent is a granular adsorbent.
The method described. 6. An edible waste oil and a mineral waste oil are mixed and stirred, and in the presence of an adsorbent containing animal bone powder as a main active ingredient, 50 to 100.
Fuel that is melted by heating at ℃ and filtered. 7. An edible waste oil and a mineral waste oil are mixed and stirred, and in the presence of an adsorbent containing animal bone powder as a main active ingredient, 50 to 100.
Fuel made by adding water to the filtrate obtained by heating and melting at ℃ and filtering and mixing. 8. Edible waste oil and mineral waste oil are mixed and stirred, heated and melted at 50 to 100 ° C. in the presence of an adsorbent containing animal bone powder as an active ingredient, filtered, and the filtrate is mixed with water with stirring and burned. A method for treating edible waste oil, which comprises: