JP3581018B2 - Method for producing clay-containing fatty acid composition and the like - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing a clay-containing fatty acid composition and the like, and more particularly, to effectively use waste clay to produce a fatty acid composition and a soap (including metal soap) therefrom.
[0002]
Problems to be solved by the prior art and the invention
In the fats and oils industry, for example, fats and oils are treated with clay to perform bleaching in the step of refining fats and oils.
Approximately 25 to 40% by weight of the fats and oils is adsorbed on the clay treated with the fats and oils even after filtration, but it has been difficult to separate the fats and oils at an industrially appropriate cost.
However, effective utilization of fats and oils adsorbed on clay is demanded from the viewpoint of resource saving and waste reduction.
From such a viewpoint, Japanese Patent Application Laid-Open No. 60-84399 describes an attempt to produce a cleanser using waste clay containing oils and fats as a raw material. However, in this method, since caustic soda is used at a high temperature, the clay has a drawback that it reacts with caustic soda to produce sodium silicate as a by-product, thereby restricting the use.
[0003]
Accordingly, an object of the present invention is to provide a clay-containing fatty acid composition and a method for producing a clay-containing soap, which do not have the above-mentioned drawbacks and can effectively utilize waste clay containing oils and fats.
[0004]
[Means for Solving the Problems]
The present invention is characterized in that 10 to 60 parts by weight of an aqueous lipase solution is uniformly mixed with 100 parts by weight of waste clay used for treating fats and oils to obtain a clay-like composition, and the clay-like composition is subjected to enzyme treatment. By providing a method for producing a clay-containing fatty acid composition, and a method for producing a clay-containing soap (including a metal soap), the method comprising neutralizing the clay-containing fatty acid composition produced by the production method. The purpose has been achieved.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, first, the method for producing the clay-containing fatty acid composition of the first invention will be described in detail.
The waste clay used in the present invention is waste clay used for the treatment of fats and oils. It is performed by adsorbing and removing the clay, and the clay adsorbing the pigments is filtered by a filter or the like and separated from fats and oils. The filtration residue (press-filtered clay) is generally referred to as waste clay. Such waste clay can be used.
The fats and oils contained in the waste clay are not particularly limited, and vegetable fats and oils such as tallow, lard, fish oil, whale oil, etc., palm oil, palm kernel oil, soybean oil, rapeseed oil, corn oil, etc. Any fats and oils such as mixed fats and oils of animal and vegetable fats and oils, hydrogenated fats and oils (hardened oils) of these fats and oils, and transesterified fats and oils of these fats and oils may be used.
[0006]
In the present invention, the lipase aqueous solution is used in an amount of 10 to 60 parts by weight, preferably 15 to 50 parts by weight, based on 100 parts by weight of the waste clay.
The lipase used in the aqueous lipase solution may be any lipase having an activity of decomposing fat and oil, and may be a lipase derived from a microorganism, a lipase derived from a plant, or a lipase derived from pancreas (pancreatin lipase).
The amount of the lipase aqueous solution used for the waste clay is as described above. If the amount is too small, moisture is not uniformly distributed to the waste clay and the enzyme treatment tends to be insufficient. Conversely, if the amount is too large, the composition does not become clay-like and water is easily separated. As a result, the lipase does not act uniformly on the fats and oils in the waste clay, and the enzyme treatment tends to be insufficient.
Here, the term "clay-like" is not strictly defined, and it is sufficient that the separation of water does not occur.
[0007]
The amount of lipase used may be a normal amount used in conventional enzymatic treatment of fats and oils depending on the amount of fats and oils contained in the waste clay, etc. There is no problem if it is about 0.01 to 0.5% by weight.
[0008]
In the present invention, the waste clay and the lipase aqueous solution are uniformly mixed to form a clay-like composition, and then the fats and oils are enzymatically treated with the lipase in the lipase aqueous solution and decomposed.
The enzymatic treatment may be carried out in a lipase active temperature range, for example, approximately 20 ° C to 50 ° C. The time for the enzyme treatment is not particularly limited, and the time may be adjusted according to the desired fat / oil decomposition rate. However, a practical result can be obtained by performing the treatment for about 1 hour to about 5 days, for example.
In addition, the enzyme treatment may be performed under such conditions by leaving the composition as it is, or may be subjected to enzyme treatment while kneading the composition with a kneader or the like, Kneading (single or multiple times) may be performed.
[0009]
The thus-obtained clay-containing fatty acid composition of the present invention can be used as a cleanser or the like even as a clay-like composition, but if dried, it can be used as a fertilizer, a compost fermentation promoter, a soil conditioner, etc. Can be used for
[0010]
Next, the method for producing clay-containing soap (including metal soap) according to the second invention will be described in detail.
In the second invention, the clay-containing fatty acid composition produced in the first invention is neutralized. Neutralization may be performed according to a known method.For example, a sodium hydroxide, a caustic alkali such as potassium hydroxide, sodium carbonate, a known neutralizing agent such as an alkali carbonate such as potassium carbonate may be added to the clay-containing fatty acid composition. If added, it can be made into a soap. In addition, metal soap can be obtained by neutralizing using calcium hydroxide or the like.
[0011]
The amount of the neutralizing agent is not particularly limited, as long as the acid value of the composition is measured and used so as to be approximately equivalent.
The neutralizing agent may be an aqueous solution or a solid (powder) form. When used as an aqueous solution, the composition is in the form of a slurry, so that uniform mixing is easy.However, if a low moisture content form is desired as the final product form, a dehydration step is required. Can be added in a solid (powder) form and kneaded with a kneader to neutralize in the form of a clay-like composition.
[0012]
The clay-containing soap of the present invention thus obtained can be used as a detergent, particularly as a cleanser, even as a clay-like composition. Even if it becomes paste-like by slightly increasing the water content, it becomes good.
In the case where the metal soap is neutralized with calcium hydroxide or the like, it can be favorably used as a cement additive in the form of a powder or slurry.
[0013]
【Example】
Hereinafter, the present invention will be described specifically with reference to examples.
[0014]
(Example-1)
400 g of lipase (Lipase OF: manufactured by Meito Sangyo Co., Ltd.) is placed in a small kneader with 1 kg of beef tallow waste clay (oil content 38.5% by weight, acid value 1.9) while stirring at room temperature. The aqueous solution dissolved in water was added dropwise to the waste clay in the kneader and mixed for 30 minutes.
After confirming that the lipase aqueous solution was completely absorbed into the waste clay and turned into a soft clay-like mixture (clay-like composition), the contents were sealed in a plastic bag with a zipper, and sealed in a 40 ° C constant temperature bath for 8 hours. I left it.
Eight hours later, the acid value of the oil in the waste clay was 152, and the decomposition rate of the fat (calculated by the acid value x 1/2) was 76%, confirming that the decomposition of the fat was progressing even in the semi-solid state. .
This clay-like mixture (clay-containing tallow fatty acid composition) is placed in a kneader, and at room temperature, an aqueous solution in which 70 g of caustic soda is dissolved in 700 g of water is dropped into the kneader with stirring. The content increased and the content changed to pale yellow.
Pour hot water into the jacket of the kneader, keep the internal temperature at 50 ° C, and continue stirring for 10 minutes to completely neutralize the unneutralized part. Soap of tallow fatty acid containing paste-like clay was gotten.
The neutralized product was spread on an aluminum tray, air-dried at 40 ° C., and pulverized to obtain 1,050 g of a yellow-white clay-containing tallow fatty acid soap.
1 g of the powdery soap obtained above was weighed into a glass bottle with a lid, 50 g of water was added, and the mixture was shaken 50 times to foam very well, and the foam retention after 30 minutes was also good. When this soap is applied to a sponge soaked in water and the surface of a glass beaker coated with oil-based magic ink and a stainless steel plate coated with machine oil are polished, the same polishing and cleaning effect as a commercially available cleanser is obtained. Admitted.
[0015]
(Example-2)
The operation was performed in the same manner as in Example 1, except that the amount of lipase was set to 1.0 g, and the obtained clay-like mixture was kept at 40 ° C. for 8 hours.
The acid value of the oil in the waste clay after 8 hours was 188. The hydrolyzed oil-and-fat decomposed product was spread on an aluminum tray, dried by ventilation at 40 ° C., and pulverized to obtain 1,035 g of an off-white clay-containing tallow fatty acid composition powder of gray clay.
The powder obtained here contained nearly 40% by weight of fatty acids, but was a dry, free-flowing powder that did not appear to contain oil at normal temperature.
When a steel plate was polished using this powder, a sufficient polishing effect was recognized as it was, and the surface after polishing was excellent in gloss and water repellency.
[0016]
(Example-3)
1 kg of palm oil waste clay (oil content: 39.0% by weight, acid value: 1.5) is placed in a small kneader, and an aqueous lipase solution obtained by dissolving 1.0 g of lipase OF in 200 g of water is stirred at room temperature in the kneader. And mixed.
All the lipase aqueous solution was absorbed by the waste clay, and the appearance became a slightly wet powder. This mixture (clay-like composition) was placed in a plastic bag with a zipper and left at room temperature (about 20 ° C.) for 24 hours. The acid value of the oil in the waste clay after standing for 24 hours was 175, and the decomposition of the oil and fat proceeded sufficiently even at room temperature.
This water-containing waste clay (white clay-containing palm oil fatty acid composition) is placed in a kneader, and an aqueous solution obtained by dissolving 70 g of caustic soda in 500 g of water is dropped into the kneader with stirring, neutralized, heated to 50 ° C., and further heated to 10 ° C. After stirring for minutes, a paste of white clay-containing palm oil fatty acid sodium soap having a yellow viscous paste was obtained.
The paste-like soap was dried and pulverized to obtain 1,050 g of yellowish white powder.
Using 1 g of the obtained powder, when a foaming test was performed in the same manner as in Example 1, it was found that the foaming property and the foam retention were better than the soap obtained from the beef tallow waste clay by the same operation. Admitted.
[0017]
(Example-4)
The same operation as in Example 3 was carried out except that the amount of lipase was 0.2 g and the amount of water was 300 g, and the acid value of the oil in the waste clay after standing at room temperature for 48 hours was 120.
Neutralization, drying and pulverization were carried out in the same manner as in Example 3 to obtain 1033 g of clay-containing palm oil fatty acid sodium soap powder. When the foaming property and foam retention of 1 g of this powder were compared in the same manner, the results were inferior to those of the soap obtained in Example 3, but were sufficiently usable as a cleanser.
[0018]
(Example-5)
The same operation as in Example 2 was carried out except that 1 kg of waste clay (oil content: 37.2% by weight) of hardened soybean oil (mp. 36 ° C) was used, to obtain a hardened soybean-containing hardened soybean oil fatty acid composition. Next, the whole amount of the obtained soy-cured oil-containing fatty acid composition containing clay was placed in a kneader, and 180 g of anhydrous sodium carbonate and 800 g of water were mixed with stirring. The neutralization reaction proceeded with some heat generation, and a slightly viscous paste-like soybean hardened oil fatty acid soap containing clay was obtained.
The powder was dried and pulverized to obtain 1120 g of powder of a clay-containing soybean hardened oil fatty acid soap. The foaming properties and foam retention of 1 g of this composition were the same as those of soap from waste tallow based clay.
[0019]
(Comparative Example-1)
1 kg of palm oil waste clay (oil content: 39.0% by weight, acid value: 1.5) is put in a small kneader, 1 kg of water containing 70 g of caustic soda is put into the kneader, and the inside is kept at 85-90 ° C. Stirring was continued for hours. Two hours later, 2 g of the yellow-brown slurry was taken and mixed with 50 g of water to conduct a foaming test. The foaming test had almost no foaming power, and the acid value of the extracted oil after acidifying a part of the slurry with sulfuric acid was also high. 16 and also very low decomposition.
[0020]
(Example-6)
500 g of the clay-containing tallow fatty acid composition powder obtained in Example-2 was mixed with 25 g of slaked lime powder in a kneader, 250 g of water was added thereto, and the mixture was stirred while being heated to 70 ° C., and the water was again obtained until the powder was obtained. Was evaporated.
The powder obtained here was excellent in water repellency and solid lubricity, and it was confirmed that calcium soap was generated on the surface of the clay particles adsorbing the fatty acid.
[0021]
【The invention's effect】
An effect of the present invention is to provide a clay-containing fatty acid composition and a method for producing a clay-containing soap that can effectively utilize waste clay containing oils and fats.

Claims (3)

100 to 100 parts by weight of waste clay used for the treatment of fats and oils, 10 to 60 parts by weight of an aqueous lipase solution are uniformly mixed to obtain a clay-like composition, and the clay-like composition is subjected to an enzyme treatment. Method of manufacturing a product. The method for producing a clay-containing fatty acid composition according to claim 1, wherein the enzymatic treatment of the clay-like composition is performed while intermittently or continuously kneading the clay-like composition. A method for producing a clay-containing soap, comprising neutralizing the clay-containing fatty acid composition produced by the production method according to claim 1.