JPS63215510A - Alkali agent - Google Patents

Abstract

PURPOSE:To obtain an alkali agent capable of neutralizing even an oil or waste liquid having high specific gravity and suitable as a safely handleable inexpensive neutralizing agent, by mixing water, an oil and powder of inorganic compound composed mainly of calcium oxide. CONSTITUTION:The objective alkali agent is produced by mixing (A) powder of an inorganic compound composed mainly of calcium oxide, (B) water and (C) an oil. The inorganic compound powder can be produced e.g. by calcining a natural substance having high calcium content, such as shell, bone or limestone. The oil can be properly selected from light oil, kerosine, fuel oil, animal oil, vegetable oil, etc., according to the use of the alkali agent and the volume ratio of the inorganic powder to the oil is about 1:(0.1-1.5). The amount of water is about several - 30% (by weight) based on the whole alkali agent.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention mainly relates to an alkaline agent for deoxidizing acidic waste oil and waste liquid, and can be used as a raw material for various paint solvents or fuel auxiliaries. It relates to an alkaline agent which can itself be used as a fuel.

[Prior art and problems to be solved by the invention] One of the methods for processing plastic waste is to convert it into oil by carbonization or the like. The oil obtained by turning it into oil is used as fuel, but some of them have a high specific gravity and are strongly acidic. This substance corrodes the storage container during storage,
Gas leaking from storage containers tends to harm the human body and corrode surrounding equipment. The same situation applies when using this as fuel.

Such acidic oil can be effectively used as a fuel by neutralizing it with a suitable neutralizing agent, but at present, since there is no suitable neutralizing agent, it is not possible to effectively utilize plastic carbonized oil. For example, when caustic soda is used as a neutralizing agent, this oil is strongly acidic and has a high specific gravity, whereas the specific gravity of a 10% caustic soda aqueous solution is 1.08, so even if the two are mixed, they will separate due to the difference in specific gravity. However, the two do not fuse together.

Therefore, the neutralization reaction does not proceed easily. The only way to achieve sufficient neutralization is to add a large amount of caustic soda, but this not only increases costs, but also makes it impossible to use the neutralized product as fuel. On top of that,
In the first place, caustic soda is harmful to the human body and is very difficult to handle.

Furthermore, if quicklime powder is directly added, only the surface of the quicklime reacts and clumps into lumps, and the neutralization reaction does not proceed any further. - In addition, some of the waste oil and liquid waste discharged from various factories such as pulp mills is acidic, but since there are no inexpensive and effective neutralizing agents, they have no choice but to drain it away. There are some.

This invention solves these problems and allows high specific gravity oil,
The purpose is to provide an alkaline agent as a neutralizing agent that can efficiently neutralize even waste liquid, is inexpensive, has little harm to the human body, and is easy to handle. The object of the present invention is to provide an alkaline agent that can be used for various purposes as a fuel auxiliary agent or a raw material for powdered fuel.

[Means for Solving the Problems] The alkaline agent of the present invention that achieves the purpose as described above is characterized by being formed by mixing three components: a powder of an inorganic compound containing calcium oxide as a main component, water, and oil. In particular, it is characterized in that it uses calcined natural products containing high calcium, such as shellfish, bone, and limestone, as a powder of an inorganic compound containing calcium oxide as a main component.

Here, the inorganic compound containing calcium oxide as a main component contains about 80 to 100% by weight of calcium oxide, and may contain inorganic compounds such as calcium phosphate, magnesium oxide, potassium iron phosphate, etc. in addition to calcium oxide. The content of calcium oxide varies depending on the use of the alkaline agent, but when used as a neutralizing agent, the higher the content, the better the effect. However, in order to achieve the object of the present invention, it is not necessary to use pure calcium oxide; in practice, calcined natural products containing high calcium such as shellfish, bone, or limestone can be used.

In this case, shells, bones, or limestone are crushed into small pieces and then fired at about 1000°C to 1500°C to form a powder of about 200 mesh. A 1% aqueous solution of the powder thus obtained had a pH of about 13, indicating high alkalinity. The oil plays the role of caking the above-mentioned inorganic powder and improving the miscibility with the object to which the alkaline agent is applied. It can be appropriately selected depending on the use of the agent. Namely.

When used as a fuel additive, use an oil that is the same as or relatively similar to the applied fuel, and when used as a food additive, use an edible oil. Depending on the application, it is also possible to use strongly acidic oil itself, such as waste oil.

In this case, it is preferable to pre-treat with the alkaline agent of the present invention. The amount of oil to be used relative to the inorganic powder varies depending on the use of the alkaline agent, but is usually about 0.1 to 1.5 by volume to 1 part of the inorganic powder. Water is then added to ionize the calcium in the calcium oxide and generate hydroxide ions to drive the neutralization reaction. Since H2O is generated as the neutralization reaction progresses, the amount of water initially contained in the alkaline agent may be the amount necessary to start the reaction.
% to about 30tzt%.

The alkaline agent of the present invention can be prepared by first mixing and stirring an aqueous solution of an inorganic compound containing calcium oxide as a main component in water and oil, and then adding powder of the inorganic compound thereto and mixing; A powder of an inorganic compound mainly composed of is mixed and stirred with oil, and an aqueous solution of the inorganic compound is added thereto.

It can be manufactured by mixing. The manufacturing method is not limited to these, and three components, namely powder of an inorganic compound containing calcium oxide as a main component, water, and oil, may be mixed and stirred at the same time. Here, if the inorganic compound is used as an aqueous solution instead of using water as it is, mixing with oil will proceed more quickly and the alkalinity of the resulting alkaline agent can be kept high.

The alkaline agent produced in this way is clay-like or powder-like with high specific gravity (although it varies somewhat depending on the mixing ratio of oil or water).
1.32) is a solid substance.

[Example Example 1] First, shells such as scallops were washed with water and crushed, and the crushed pieces were baked in a furnace at 1000°C to 1200°C for about 30 minutes, then raised to about 1350°C and heated to 500°C. Bake for 10 minutes and immediately air cool. After cooling in air, it is finely ground to obtain a powder of about 200 mesh.

The components of this powder vary slightly, but are generally as shown in Table I. Table I is based on analysis by the Chiba Pharmaceutical Association Inspection Center, and the values indicate the weight of each component in 100 g of sample.

Table I phosphorus
78 mg calcium
68.6g Magnesium 1.45
Bow potassium 8.4mK iron
4.8mg sodium
540 mg Next, a method for producing an alkaline agent using this powder will be explained.

By mixing and stirring a 10% aqueous solution of the powder and light oil at a volume ratio of 2 to 1, adding about twice the amount of the calcium agent by weight to these mixed liquids, and stirring again,
Obtain a clay-like alkaline agent.

The alkaline agent thus obtained is used as a neutralizing agent for waste oil, waste liquid, etc. In this case, depending on the acidity of the waste oil, for example, the carbonized oil of plastics can be neutralized by adding about 1 to 10% by weight,
Obtain liquid or clay fuel. Both liquid and clay-like ones.

It could be used as a high-calorie fuel, but when a liquid fuel is needed, the amount of neutralizing agent added can be kept low, and when a clay-like fuel is needed, the amount added can be increased. The remaining residue could be used as a calcium-rich fertilizer or soil conditioner.

Example 2 Quicklime (Cab) and calcium phosphate obtained by calcining limestone at 1000°C to 1200°C were
4 kg of powder mixed at a mixing ratio of :1 is mixed and stirred with deoxidized plastic dry distilled oil 6Q to obtain a powdered alkaline agent. Here, the deoxidation treatment of plastic carbonized oil is carried out by adding about 10% of an alkaline agent (powder) made by mixing quicklime, kerosene, and water in a volume ratio of 10:1:0.1 to plastic carbonized oil. This is done by neutralizing the acid in the carbonized oil.

Since the carbonized oil converted in this way contains water generated during neutralization, there is no need to separately add water when producing an alkaline agent.

The alkaline agent obtained in Example 2 is used as a neutralizing agent for acidic waste oil and waste oil, and also as a treatment agent for various industrial wastes and livestock wastes.

The alkaline agent according to the present invention can be used for various purposes other than those listed in the above examples. For example, it can be used in place of caustic soda in pulp mills, and unlike caustic soda, it does not cause much harm to the human body, and since it is made of saran, it can be removed with a small amount of water.

Moreover, this alkaline agent can also be used to make foods such as soybean oil and miso, seasonings, etc. alkaline.

Furthermore, it is used as a raw material for paint solvents (Japanese Patent Application No. 61-254069), and as a fuel auxiliary (Japanese Patent Application No. 313996-1982).
It can be applied in a wide range of fields, such as as

[Effects of the invention] The alkaline agent according to the present invention uses seashells that can be obtained in abundance for free as industrial waste and oil that can be obtained at low cost as raw materials.
It can be manufactured using a simple manufacturing method. Therefore, it is extremely inexpensive.

In addition, it is convenient to handle because it contains calcium as its main component and does not cause much harm to the human body.

Since it is used as saran, it is also advantageous when washing neutralized items with water.

In particular, since it has an extremely high alkalinity and a high specific gravity, it is ideal for neutralizing waste oils, waste liquids, etc. that are strongly acidic and have a large specific gravity.

The ions needed to exhibit strong alkalinity are somewhat confined inside the clay-like alkaline agent while being surrounded by oil particles, so when mixed with the liquid to be treated, the ions are It gradually oozes out and continues to react with strong force. Therefore, strong reaction force can be maintained for a long period of time.

Furthermore, this alkaline agent has many uses, such as not only as a neutralizing agent but also as a raw material for solvents, fuels, etc., and can be applied in many fields in the future.

Claims (1)

[Claims] 1. Powder of an inorganic compound containing calcium oxide as a main component;
An alkaline agent made by mixing water and oil. 2. The alkaline agent according to claim 1, wherein the powder is obtained by calcining a natural product containing high calcium content such as shellfish, bone, and limestone.