JPH0252031A - Edible waste oil treatment agent - Google Patents

Abstract

PURPOSE:To simplify treatment work and to treat oil safely and sanitarily by adding a proper amount of water, at least one kind of an alkali salt of an inorg. weak acid and an anionic surfactant to waste oil to form a soapy substance. CONSTITUTION:Water in an amount of about 1/2 the amount of waste oil to be treated and a treatment agent in an amount of 1/2-1/4 the amount of said oil are added to prepare an alkali aqueous solution. Said treatment agent consists of 75-85wt.% of one of alkali salts of an inorg. weak acid such as potassium carbonate or a mixture of two or more kinds of said salts and 15-25wt.% of an anionic surfactant such as alkali sulfate. This alkali aqueous solution is added to waste edible oil heated to 40-100 deg.C to perform reaction under stirring to form a soapy substance. Water is added to this soapy substance in an amount of about 10 times to cool, dilute and discharge the same.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment agent for edible oil used at home.

(Prior Art) Edible oil deteriorates after being used several times and becomes unusable, depending on the type and properties of the fried food, so it must be discarded.

Direct disposal of waste oil causes pollution and environmental health problems, so solidifying agents for waste oil are commercially available.

The disadvantage of this solidifying agent is that it takes time to solidify the waste oil, and the solidified waste oil must be further disposed of.

In addition, with conventional oil dispersants that turn oil into soap, the treatment process is laborious and time-consuming, and the soap produced is of insufficient quality, making it difficult to fully achieve the intended purpose. There were no drawbacks.

(Purpose) The present invention was made in view of the current situation, and it is an object of the present invention to provide an oil dispersant that is simple and time-consuming, and allows for easy oil treatment. be.

That is, the oil treatment agent of the present invention obtains an alkaline aqueous solution using water and an alkaline salt of an inorganic weak acid, and brings this aqueous solution into contact with glyceride and free acid in waste oil to saponify the glyceride and neutralize the free acid. It was developed with the intention of producing a soap-like substance by emulsifying unsaponified substances with an anionic surfactant.

(Constitution) The treatment agent of the present invention is one or a mixture of two or more of silicates such as sodium metasilicate, carbonates such as sodium carbonate and potassium carbonate, and other alkali salts of inorganic weak acids.
It consists of 5% to 85% (wt) and 15% to 25% (wt) of an anionic surfactant such as alkyl sulfate.

The content of the anionic surfactant contained in the above-mentioned oil dispersant is the one necessary for the alkaline aqueous solution obtained when water and the oil dispersant are added to the waste oil to emulsify and mix with the waste oil. It needs to be in a sufficient amount, and is preferably contained in an amount of 10% or more based on the total weight of the dispersant.

That is, if the content of the anionic surfactant is less than 10%, the mixture of the aqueous alkaline solution and waste oil will not be sufficiently emulsified.

(Treatment method) Add about 1/2 or more amount of water and 1/2 to 1/4 amount of the treatment agent of the present invention to the amount of waste oil to be treated to make an alkaline aqueous solution at a temperature of 40°C to 100°C. Preferably 80°C~1
The mixture is poured into edible waste oil heated to 00°C and stirred to react.

By this operation, the edible waste oil is emulsified and becomes a soap-like substance, which is diluted by adding about 10 times the amount of water to the oil and drained as it cools.

All treatment work can be done in the water tank of the sink, making it safe and sanitary.

(Formulation example) - Sodium lauryl sulfate 11.0g - Sodium metasilicate 8.7g - Sodium carbonate
20.2g・Sodium bicarbonate
10.1g (total amount 50g) (Hereafter blank) (Usage example 1) 400g of used cooking oil was heated to 100'C, 50g of the above treatment agent and 200% of water were added, and stirred for a certain period of time. - The state of the solution produced by adding water was as shown in Table-1.

Table 1: 400 g of used cooking oil was heated to 100°C, 50 g of the above treatment agent and the following amount of water were added, and the mixture was stirred for 1 minute, followed by the addition of 4,000 g of water. Table -
It was like 2.

Table-2

Claims (1)

[Claims] A treatment agent that is added to waste oil at a temperature of 40°C to 100°C together with an appropriate amount of water, comprising 75 to 85 wt% of an alkali salt of at least one type of inorganic weak acid and 15% of an alkyl sulfate.
% to 25 wt%.