JP2007261906A - Porous granule - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a porous granule exhibiting an odor eliminating action even in a dark place by the deodorization ability of a negative ion and charcoal even in a non-lighting place or time zone. <P>SOLUTION: The porous granule is obtained by kneading respective raw materials comprising powdery charcoal, a negative ion ceramic, titanium oxide, powdery tourmaline and clay, forming the kneaded raw materials granular and firing the formed body, wherein a ratio by mass of each raw material is 5-10% powdery charcoal, 1-10% negative ion ceramic, 1-10% titanium oxide, 1-5% tourmaline and the balance being clay. Fe in the clay is controlled to be not contained or <2 mass% substantially. The powdery charcoal used is obtained from wood such as white oak not containing much odor. Firing of the formed body of kneaded raw materials is performed at a temperature between 600°C and 1,300°C. As a result, the porous granule having various functions excellent in deodorization action, purification action, hygroscopic action or the like. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a porous granular material having various functions such as a deodorizing action, a purifying action, and a hygroscopic action.

Charcoal is a porous body having various functions such as a deodorizing action, a purifying action, and a hygroscopic action, and has been conventionally used for various applications utilizing the above-mentioned various functions (for example, Patent Document 1). reference).
In addition, titanium oxide (TiO ₂ ) has attracted attention as a photocatalyst having a decomposition effect and a bactericidal effect (see, for example, Patent Document 2).

JP 2001-278655 A Japanese Patent Laid-Open No. 11-43367

However, a catalyst such as titanium oxide, where there is light (ultraviolet rays), decomposes organic substances in the air, eliminates odors, and decomposes germs. There was a problem that the deodorizing and sterilizing functions could not be expected.
An object of the present invention is to provide a porous granular material that exhibits an effect of eliminating odor even in a dark place due to the deodorizing ability of negative ions and charcoal even in a place without light and in a time zone.

The first configuration of the present invention is to knead each raw material component consisting of powdered charcoal, negative ion ceramics, titanium oxide, powdered tourmaline, and clay, and form the kneaded product into a granular form. It is a porous granular material obtained by firing the body.
In this first configuration, the clay is a raw material that serves as a connection between the base forming the porous granular material and other raw materials, and in addition to forming porous pores after combustion, the residual elements are deodorized.・ Places where there is no light by adding powdered charcoal that will have a hygroscopic action, titanium oxide that exhibits photocatalytic action, and negative ion ceramics and powdered tourmaline that impart photocatalytic action to titanium oxide in the absence of light Even in the time zone, a porous granular material that exhibits the effect of eliminating the odor even in a dark place can be obtained by the deodorizing ability of negative ions and charcoal.

According to a second configuration of the present invention, the kneaded product includes raw material components of powdered charcoal, negative ion ceramic powder, titanium oxide, powdered tourmaline, and clay, and the usage ratio of each raw material component is mass%. It is a porous granular material in which powdered charcoal is 5 to 10%, negative ion ceramics is 1 to 10%, titanium dioxide is 1 to 10%, tourmaline is 1 to 5%, and the balance is clay.
In this 2nd structure, the ratio of each raw material component is prescribed | regulated. Powdered charcoal is 5 to 10%. If it is less than 5%, the formation of porous pores is reduced, and if it exceeds 10%, cracking or collapse occurs, resulting in poor yield. Negative ion ceramics, titanium dioxide, and tourmaline are within the above ranges in order to maintain the characteristics of the product after firing.

  According to a third configuration of the present invention, the clay is a porous granule that is substantially free of Fe or less than 2% by mass. When clay containing iron (Fe) is used, iron oxide is generated by oxidation and the color changes to reddish brown. Therefore, the clay does not contain iron or has a content of less than 2% by mass.

  According to a fourth configuration of the present invention, the powdered charcoal is a porous granular material obtained from wood such as oak that does not contain a lot of odor components. Kunugi, beech, etc. contain odor components and are not suitable for deodorizing purposes. Oak, oak and bamboo are suitable because they contain little odorous ingredients.

  The 6th structure of this invention is a porous granule by which baking of the molded object of the any one of the 1st-5th raw material component kneaded material is performed at the temperature of 600 to 1300 degreeC. When the temperature is lower than 600 ° C., water molecules taken into the inorganic component in the clay are not completely dehydrated, and the oxidation of carbon atoms constituting the powdered coal becomes insufficient. Since the ore component melts and the porous pores are clogged, and porous properties cannot be obtained, the temperature range is set.

  According to the present invention, each raw material component consisting of powdered charcoal, negative ion ceramics, titanium oxide, powdered tourmaline, and clay is kneaded, the kneaded product is formed into granules, and the formed body is fired. In addition to the deodorizing effect of powdered charcoal by activated carbon, the ions generated from tourmaline and negative ion ceramics activate the photocatalytic action of titanium oxide in the absence of light, deodorizing, Since the bactericidal effect is obtained, it can be used in a refrigerator, a vehicle or a room, and a relaxing effect by negative ions can be obtained.

Embodiments of the present invention will be described below.
As the powdered charcoal used for the raw material of the porous granular material of the present invention, one kind or plural kinds of various charcoal powders such as charcoal and bamboo charcoal can be used. The particle size can be appropriately set as necessary, but is generally about 0.05 to 0.5 mm. It should be noted that charcoal made from scented wood such as chestnut tree itself generates odor and is not suitable for the purpose of deodorization, so scentless wood such as oak is used.

  As clay used as a raw material, clay for ceramics, etc. can be used as appropriate, but if one containing iron (Fe) is used, iron oxide is generated due to oxidation and turns reddish brown. , And a content of less than 2% by mass are used.

  The particle size of the negative ion ceramic powder, titanium oxide powder, and powdered tourmaline (tourmaline) used as a raw material can be appropriately set as necessary, but generally 0.05 to 0. 5 mm is preferable.

  The proportions of the raw material powdered carbon, negative ion ceramics, titanium oxide and tourmaline can be set as needed. As the negative ion ceramic, for example, a cosmetic material can be used.

The manufacturing process of the porous granular material of this invention is demonstrated.
(1) Add a predetermined amount of the above-mentioned powdered charcoal, clay, powdered negative ion ceramics, powdered titanium oxide, and powdered tourmaline, add a predetermined amount of water as necessary, and knead.

(2) Apply pressure to the kneaded material in a dumpling shape to extend it, and remove air from the kneaded material as much as possible. It is left in a dry atmosphere for a predetermined period, and moisture contained in the kneaded product is blown away. This process is repeated several times as necessary.

(3) When it becomes a predetermined hardness, it is molded into granules having an average particle diameter of 5 to 10 mm with a molding machine. The shape may be any shape such as a tablet shape, a spherical shape, or a rod shape.

(4) The granular material is fired in an electric furnace (kiln). By performing the firing temperature at 600 ° C. to 1300 ° C., moisture and air inside the granulated material are discharged, carbon of the powdered coal is oxidized and discharged as a gas, and the cavity is porous. It becomes quality. Part of the powdered charcoal remains in the interior of the granulate in the form of carbon atoms. This carbon atom acts as an odor adsorbing substance.

  In order to prevent cracking and collapse due to rapid release of moisture in the clay by rapid heating, preheating is performed at a temperature below 100 ° C., which is the boiling point of water, for example, 50 to 80 ° C. for about 12 hours, and then 600 By baking at a temperature in the range of from 1C to 1300C, for example, 820C, cracks and particle collapse can be prevented.

  The porous granule of the present invention produced by the above-described process is composed of fine particles of clay, negative ion ceramics, titanium oxide, and tourmaline in a porous carbonaceous matrix having an average particle size of 5 to 10 mm. It is a porous granule having a structure in which the components are sintered.

  In order to measure the effect of the produced porous granule, the graph which measured the density | concentration change of ammonia, the measured value change of tobacco particle | grains, and the humidity change is shown in Table 1-Table 3, and FIGS.

  Measurement conditions: 1 kg of a porous granule having an average particle diameter of 8 mm was sealed in an acrylic container having a volume of about 1 cubic meter and measured at room temperature in a dark place. Ammonia concentration measurement is "Kitakawa gas detector" by Komyo Chemical Co., Ltd., tobacco particle measurement is "Digital Dust Meter P-5" by Shibata Kagaku Co., Ltd., and humidity change is "Thermo" by T & D Corporation. Recorder Ondotori temperature / humidity data logger ”was used.

注）ＣＰＭ：Count Per Minute＝デジタル粉じん計の計数値

Note) CPM: Count Per Minute = Count value of digital dust meter

注）※は、湿度測定開始後１８０分を経過した後、そのままの状態で日光を当てて測定した。

Note) *: Measured by applying sunlight in the same state after 180 minutes from the start of humidity measurement.

  From the above results, the ammonia concentration is 3/4 in 30 minutes and 1/2 when 180 minutes have passed, and the number of tobacco particles is reduced to 2/3 in 30 minutes and 1/2 in 90 minutes. It has been found. Moreover, the moisture absorption effect fell about 20% in 5 minutes, and there was not much change after that. When exposed to sunlight, the relative humidity decreased rapidly, but it was thought that the relative humidity decreased because the temperature rose.

  The present invention can be used as a deodorant, a hygroscopic agent, etc. installed in a refrigerator, a vehicle, a room, a toilet, a shoe box, etc. as a porous granular material having various functions such as a deodorizing action, a purifying action, and a hygroscopic action. it can. Moreover, since water becomes mellow, the irritation | stimulation with respect to skin can be eased by storing a porous granular material in a shower head, and letting tap water pass. It can also be used to improve water quality in hydroponics. When mixed with foliage plants and planted soil, it promotes the growth of underground roots and rhizomes by stimulating with negative ions, and also has an action of adsorbing harmful substances such as Cd and Hg. Can do. The fine particle powder produced in the process of producing the porous granule of the present invention can be applied at the time of interior decoration of the wall surface to adsorb and decompose a substance causing the house sick syndrome to improve the environment.

It is a graph which shows the density | concentration change of ammonia in an Example. It is a graph which shows the measured value change of the tobacco particle in an Example. It is a graph which shows the humidity change in an Example.

Claims (5)

  Porous material obtained by kneading each raw material component consisting of powdered charcoal, negative ion ceramics, titanium oxide, powdered tourmaline, and clay, forming the kneaded product into granules, and firing the compact Granular material.   The kneaded product contains raw material components of powdered charcoal, negative ion ceramic powder, titanium oxide, powdered tourmaline, and clay, and the use ratio of each raw material component is mass%, and powdered charcoal is 5 to 10%, minus The porous granular material according to claim 1, wherein the ionic ceramic is 1 to 10%, titanium dioxide is 1 to 10%, tourmaline is 1 to 5%, and the balance is clay.   The porous granule according to claim 1 or 2, wherein the clay is substantially free of Fe or less than 2% by mass.   The porous granular material according to any one of claims 1 to 3, wherein the powdered charcoal is obtained from wood such as oak that does not contain a lot of odor components.   The porous granular material according to any one of claims 1 to 4, wherein the firing of the raw material component kneaded product is performed at a temperature of 600 ° C to 1300 ° C.

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