JP3360974B2 - Adsorbed oxidation catalyst material used as artificial aggregate, lightweight aggregate, etc. and method for producing the same - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate and the like, and a method for producing the same, and more specifically, ash dust (incineration ash of general waste and incineration fly ash). The artificial aggregate that can be processed at low cost and is also harmless to ash dust and has an environmental purification function.
The present invention relates to an adsorption oxidation catalyst material used as a lightweight aggregate or the like and a method for producing the same.

2. Description of the Related Art Conventionally, as a method of treating ash dust such as incineration ash and fly ash, it is buried in the ground at the final disposal site, mixed with concrete and solidified, and further cured with a resin, The fact is that a melting furnace method for melting in a furnace has been implemented or is being studied.

However, landfilling ash dust into the ground at the final disposal site is due to the fact that groundwater pollution and environmental pollution due to similar landfill treatment that has been performed in the past are becoming apparent. , It is in a situation that it will soon be impossible due to legal regulations. Further, when ash dust is mixed with concrete to solidify it, there is a concern that heavy metal contained in the ash dust may be eluted since the concrete is dissolved by acid rain or water having high acidity. Further, when ash dust is cured with a resin, elution contamination may occur due to cracking, deterioration, collapse, etc. of the resin layer as in the case of solidification of concrete. Further, in the case of the melting furnace method in which ash dust is melted in a high temperature furnace, a sturdy and expensive melting furnace is constructed, and the melting of incineration ash and fly ash is performed at a high temperature of 1400 degrees Celsius or more, and a large amount. Since heat energy is required, there is a problem that the processing cost thereof rises and the construction cost and operation and maintenance cost become enormous. Therefore, the present invention has been developed in view of such conventional circumstances, the purpose is to be able to low-cost treatment of ash dust and detoxification of ash dust, environmental purification function An object of the present invention is to provide an adsorption oxidation catalyst material used as a novel artificial aggregate, a lightweight aggregate, etc., which is also provided, and a method for producing the same.

The adsorption oxidation catalyst material used as an artificial aggregate or a lightweight aggregate according to claim 1 is ash dust such as incineration ash of general waste or incineration fly ash, bentonite, zeolite, glass cullet. And a raw material composed of sludge incineration ash such as human waste sludge, and kneaded / granulated, sintered / fired, irradiated with electromagnetic waves or treated with ozone to form a lump. The adsorptive oxidation catalyst material used as the artificial aggregate or lightweight aggregate according to claim 2 is ash dust such as incineration ash or incineration fly ash of general waste, and sludge incineration fly ash such as bentonite, zeolite, glass cullet and human waste sludge. And a raw material consisting of the above are kneaded / granulated, sintered and fired, irradiated with electromagnetic waves, or treated with ozone to form lumps. The adsorptive oxidation catalyst material used as the artificial aggregate or lightweight aggregate according to claim 3 is a sludge which is substituted for incineration ash or incineration fly ash of general waste or mixed in incineration ash or incineration fly ash of general waste. Incineration ash or sludge incineration fly ash, for example, ash dust of incinerator sludge incineration ash or incinerator sludge incinerator fly ash, and a raw material consisting of bentonite, zeolite and glass cullet, kneading, granulation treatment, sintering firing treatment, electromagnetic wave irradiation treatment Alternatively, it is formed into a lump by ozone treatment. The adsorptive oxidation catalyst material used as the artificial aggregate / light weight aggregate according to claim 4 is the adsorption oxidation catalyst material used as the artificial aggregate / light weight aggregate according to any one of claims 1 to 3. It has a spherical shape with a diameter of about 5 to 15 mm. The method for producing an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, etc. according to claim 5 is a method of sieving ash dust such as incineration ash or incineration fly ash of general refuse to remove impurities, and then heat drying. The ash dust from which metals such as iron have been removed by magnetic force selection means, and bentonite as a raw material, zeolite,
A step of mixing and crushing glass cullet and sludge incineration ash such as human waste sludge, kneading and granulating them while humidifying, and about 250 ° C to 500 ° C with respect to the granulated material After pre-drying at a temperature of 60 degrees Celsius
The step of sintering and firing the material within a temperature range of 0 to 950 degrees, and the step of cooling the sintered and fired material to around 200 degrees Celsius, and then irradiating the material with electromagnetic waves or passing ozone through the atmosphere. Processing steps. The method for producing an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, etc. according to claim 6 is a method in which ash dust such as incineration ash of general waste or incineration fly ash is sieved to remove impurities,
Heat-dried, the ash dust from which metals such as iron have been removed by magnetic separation means, and bentonite as a raw material, zeolite, glass cullet and sludge incineration fly ash such as human waste sludge are mixed and pulverized, and these are moisturized. The step of kneading and granulating to make a raw material,
After pre-drying at a temperature of 0 to 500 ° C., sintering and firing the material within a temperature range of 600 to 950 ° C., and cooling the sintered and fired material to around 200 ° C. After that, this material is subjected to an electromagnetic wave irradiation treatment or an ozone treatment step of passing the material through an ozone atmosphere. The method for producing an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, etc. according to claim 7 is as an alternative to incineration ash or incineration fly ash of general waste, or incineration ash or incineration fly ash of general waste. Sludge incineration ash or sludge incineration fly ash, for example, sewage sludge incineration ash or sewage in sludge incineration fly ash was sieved to remove impurities, then heat-dried, and metals such as iron were removed by magnetic separation means. A step of mixing the ash dust with bentonite, zeolite and glass cullet as raw materials and pulverizing them and kneading them while moisturizing to granulate them to obtain a raw material;
After pre-drying at a temperature of around 600 to 950 ° C., sintering and firing the material within a temperature range of 600 to 950 ° C., and cooling the sintered and fired material to around 200 ° C. Then, this material is subjected to an electromagnetic wave irradiation treatment or an ozone treatment step of passing the material through an ozone atmosphere.

According to the adsorptive oxidation catalyst material used as the artificial aggregate or lightweight aggregate according to claims 1 and 2, ash dust, bentonite, zeolite, glass cullet, sludge incineration ash or sludge incineration fly ash, for example, human waste sludge. A raw material consisting of incinerated ash or incinerator sludge incineration fly ash is kneaded / granulated, sintered and fired, irradiated with electromagnetic waves or treated with ozone to form lumps. As a bentonite, a physical and chemical change occurs in the composition of the zeolite, and the action of adsorbing and carrying heavy metals contained in ash dust through the pores in the cavity after removing the water of crystallization is significantly enhanced, and , Elimination of heavy metals is eliminated, and harmless can be achieved. Further, by such a sintering and firing treatment, the molecules of bentonite as a raw material and alumina ( Al ₂ O ₃ ) contained in the composition of zeolite are changed, and as a result, they are used as artificial aggregates, lightweight aggregates, etc. The far-infrared effect can be exerted by the adsorption oxidation catalyst material. Further, by irradiating an electromagnetic wave, or by an ozone treatment of passing an ozone atmosphere, ozone can be contained in the bentonite and the pores of the zeolite to the maximum extent, and each effect of sterilization by ozone, deodorization, and sterilization can be exhibited. In addition to the product itself, it is also possible to provide the product with a property that enables adsorption and decomposition of heavy metals and malodorous molecular components around the product. According to the adsorptive oxidation catalyst material used as the artificial aggregate or the lightweight aggregate according to claim 3, the incineration ash of general waste, the incineration fly ash, or the like is used in place of the incineration ash or incineration fly ash of general waste. Mixed sludge incineration ash or sludge incineration fly ash, such as sewage of human waste sludge incineration ash or human sewage sludge incineration ash, and bentonite,
The artificial bone according to claim 1 or 2, wherein the raw material composed of zeolite and glass cullet is kneaded / granulated, sintered / sintered, irradiated with electromagnetic waves or treated with ozone to be formed into a lump. It can exhibit the same action as the adsorption oxidation catalyst material used as a material, lightweight aggregate, etc. According to the adsorptive oxidation catalyst material used as the artificial aggregate / lightweight aggregate according to claim 4, the adsorptive oxidation used as the artificial aggregate / lightweight aggregate according to any one of claims 1 to 3 Since the catalyst material is formed into a spherical shape having a diameter of about 5 to 15 mm, it has a shape that is easy to handle as a product, and handling is easy. According to the method for producing an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, etc. according to claims 5, 6, and 7, energy saving is achieved as compared with high temperature treatment as in the conventional melting furnace method. It is possible to reduce the equipment cost and to manufacture the adsorptive oxidation catalyst material used as the artificial aggregate, the lightweight aggregate, or the like according to any one of claims 1 to 4 at low cost.

EXAMPLES Examples of the adsorptive oxidation catalyst material used as the artificial aggregate, the lightweight aggregate and the like according to the present invention and the method for producing the same will be described in detail below. The adsorptive oxidation catalyst material 1 used as the artificial aggregate / light weight aggregate shown in FIG. 1 is formed in a lump shape, for example, a spherical shape having a diameter of about 5 to 15 mm. This artificial aggregate
The adsorptive oxidation catalyst material 1 used as a lightweight aggregate or the like includes ash dust 2 (indicated by a black circle in FIG. 1) such as incineration ash of general waste and incineration fly ash, and bentonite 3 as a raw material (○ in FIG. 1).
, Zeolite 4 (indicated by Δ in FIG. 1), glass cullet 5 (indicated by □ in FIG. 1), sludge incineration ash or sludge incineration fly ash (not shown), for example, human waste sludge incineration ash or human waste sludge. A raw material composed of incinerated fly ash is mixed, finely pulverized, kneaded, and granulated, and further subjected to sintering and firing treatment and irradiation of electromagnetic waves or ozone treatment to form a spherical shape having a diameter of about 5 to 15 mm. Next, the manufacturing process according to the manufacturing method of the adsorptive oxidation catalyst material 1 used as the above-mentioned artificial aggregate, lightweight aggregate, etc. will be described in detail with reference to FIG. As shown in FIG. 2, first, ash dust 2 such as incineration ash of general waste and incineration fly ash is sieved to remove impurities, and then heat-dried, and further, iron is started by a magnetic force selection means utilizing magnetic action. Ashes 2 from which metals that are attracted to the magnetic force are removed, and bentonite 3, zeolite 4, glass cullet 5, sludge incineration ash or sludge incineration fly ash as a raw material, for example, human waste sludge incineration ash or human sewage sludge incineration fly ash And finely pulverized,
Further, these are kneaded while being moistened, and granulated into a desired size, for example, a spherical shape having a diameter of about 5 to 15 mm, to obtain a raw material. Humidification in the above mixing, fine pulverization step and kneading step,
This is not necessarily mandatory. In this case, bentonite 3 and zeolite 4 may be used in an amount of about 5 to 10% by weight, about 10 to 15% by weight, or about 15 to 20% by weight, based on the ash dust 2. The material granulated as described above is pre-dried at a temperature of around 250 to 500 degrees Celsius and then sintered and fired within a temperature range of 600 to 950 degrees Celsius. After that, after the sintered and fired material is cooled to around 200 degrees Celsius, the material is irradiated with electromagnetic waves or ozone-treated to pass through an ozone atmosphere to perform adsorption oxidation to be used as an artificial aggregate or lightweight aggregate as a product. The catalyst material 1 is obtained. Bentonite 3 as a raw material is also known as montmorillonite, is recognized as a food additive, and has been used as a pharmaceutical raw material for a long time. The bentonite 2 theoretical composition a kind of hydrous aluminum silicate (clay minerals) of Al ₂ O ₃ · 4
It is represented by SiO ₂ · nH ₂ O and has an extremely large amount of base substitution and excellent adsorption. The bentonite 3 is crushed before use. Zeolite 4 as a raw material is a kind of crystalline aluminosilicate, and the typical example of the theoretical composition is Na ₁₂ A.
indicated by _{l 12 Si 12 O 48 · 27H} 2 O, has a uniform pore size, has excellent adsorption through pores. This zeolite 4 is also crushed and used. The glass cullet 5 as a raw material used in this example is also called glass powder and is in powder form. As the sludge incineration ash or the sludge incineration fly ash as a raw material, ash or fly ash obtained by incinerating various sludges can be used, but it is preferable to use the human waste sludge incineration ash or the human sewage sludge incineration fly ash. In the manufacturing process described above, kneading the ash dust 2 and each of the above raw materials and granulating them into spherical particles of about 5 to 15 mm is to make them uniform in the subsequent sintering and firing treatment, and to make them into shapes that are easy to handle as products. Etc. Further, the sintering and firing treatment is performed by heating bentonite 3 and zeolite 4 as raw materials to physically and chemically change the composition of these materials and removing fine water of crystallization into fine cavities. This is because the action of adsorbing and carrying the heavy metals contained in the ash dust 2 through the holes is significantly enhanced. As a result, even if a large amount of the adsorptive oxidation catalyst material 1 used as the artificial aggregate / lightweight aggregate etc. is landfilled, the heavy metals contained in the ash dust 2 do not elute, and it is used as the artificial aggregate / lightweight aggregate etc. It is possible to positively use the adsorptive oxidation catalyst material 1 as a landfill material, a lightweight concrete material, a ground maintenance material, and the like. Also, by such a sintering and firing process,
The molecules of alumina ( Al ₂ O ₃ ) contained in the composition of bentonite 3 and zeolite 4 as raw materials are changed to exert a far infrared ray action. Further, since the material is sintered and fired within a temperature range of 600 to 950 degrees Celsius, energy saving and equipment cost reduction can be achieved as compared with the conventional example.
The reason why sludge incinerated ash or sludge incinerated fly ash, for example, human waste sludge incinerated ash or human sewage sludge incinerated fly ash, is used as a raw material in the present Example is that granulation is further facilitated. Furthermore, after cooling the sintered and fired material to around 200 degrees Celsius, the material is irradiated with electromagnetic waves, or ozone is passed through an ozone atmosphere to remove ozone from the bentonite 3 and zeolite 4. It can be contained in the pores as much as possible, and it can exert each action of sterilization, deodorization, and sterilization by ozone, and it can adsorb and decompose heavy metal and malodorous molecular components around the product itself in addition to the product itself. It can have characteristics. Also,
By using the adsorptive oxidation catalyst material 1 used as the artificial aggregate or the lightweight aggregate in a bad environment, the effect of improving the environment can be obtained. As described in detail above, according to the adsorptive oxidation catalyst material used as the artificial aggregate / light weight aggregate and the like according to the present invention and the method for producing the same, it is possible to eliminate the elution of heavy metals and to detoxify the far infrared rays. Action, sterilization, deodorization, sterilization,
It is possible to realize an adsorptive oxidation catalyst material that can also exert the adsorptive decomposition action of heavy metals and malodorous molecular components,
Since the material can be sintered and fired within a temperature range of 600 to 950 degrees Celsius, it is possible to achieve low cost treatment, energy saving, and facility cost reduction as compared with the conventional treatment means of this type. . The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention. For example, the adsorptive oxidation catalyst material 1 used as the artificial aggregate, the lightweight aggregate, or the like can be formed into a spherical shape, or can be embodied as a lump having an arbitrary shape such as an elliptic spherical shape, a cubic shape, or a rectangular parallelepiped shape.

EFFECTS OF THE INVENTION According to the adsorptive oxidation catalyst material used as the artificial aggregate, the lightweight aggregate and the like of the present invention and the method for producing the same, the following effects are obtained. According to the adsorptive oxidation catalyst material used as the artificial aggregate or the lightweight aggregate according to claims 1, 2 and 3, the elution of heavy metals can be eliminated to render it harmless, and far-infrared action, sterilization and deodorization can be achieved. It is also possible to exert each action of sterilization and the adsorptive decomposition action of malodorous molecular components. According to the adsorptive oxidation catalyst material used as the artificial aggregate or the lightweight aggregate according to the fourth aspect, since it is formed into a spherical shape having a diameter of about 5 to 15 mm, the product has a shape that is easy to handle and easy to handle. According to the method for producing an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, etc. according to claims 5, 6, and 7, the material can be sintered and fired within a temperature range of 600 to 950 degrees Celsius. Therefore, as compared with the conventional processing means of this type, energy saving and equipment cost reduction can be achieved, and the cost can be reduced.
It is possible to manufacture the adsorptive oxidation catalyst material used as the described artificial aggregate, lightweight aggregate, and the like.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of an adsorptive oxidation catalyst material used as an artificial aggregate / light weight aggregate of the present invention.

FIG. 2 is a process diagram showing a manufacturing process of an adsorptive oxidation catalyst material used as an artificial aggregate or a lightweight aggregate of the present invention.

[Explanation of symbols]

1 Adsorption oxidation catalyst material used as artificial aggregate, lightweight aggregate, etc. 2 ash dust 3 Bentonite 4 Zeolite 5 glass cullet

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI B09B 3/00 B09B 3/00 ZAB 301 303L ZAB

Claims (7)

(57) [Claims] [Claim 1] Ash dust such as incineration ash of general waste and incineration fly ash;
Kneading and granulating the raw materials consisting of sludge incineration ash such as bentonite, zeolite, glass cullet and human waste sludge,
An adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, or the like, which is formed into a lump by sintering and firing treatment, electromagnetic wave irradiation treatment, or ozone treatment. 2. Ash dust such as incineration ash of general waste and incineration fly ash,
Characteristically, a raw material consisting of sludge incineration fly ash such as bentonite, zeolite, glass cullet and human waste sludge is kneaded / granulated, sintered / fired, irradiated with electromagnetic waves or treated with ozone to form a lump. Adsorption oxidation catalyst material used as artificial aggregate, lightweight aggregate, etc. 3. Sludge incineration ash or sludge incineration fly ash, which is substituted for incineration ash or incineration fly ash of general trash, or mixed in incineration ash or incineration fly ash of general trash, for example, human waste sludge incineration ash or human waste sludge An artificial bone characterized by being formed into a lump by kneading / granulating treatment, sintering / firing treatment, electromagnetic wave irradiation treatment or ozone treatment of ash dust of incinerated fly ash and a raw material composed of bentonite, zeolite and glass cullet. Adsorption oxidation catalyst material used as materials, lightweight aggregates, etc. 4. The artificial body according to any one of claims 1 to 3, wherein the adsorptive oxidation catalyst material used as the artificial aggregate, the lightweight aggregate or the like is formed into a spherical shape having a diameter of about 5 to 15 mm. Adsorption oxidation catalyst material used as aggregate, lightweight aggregate, etc. 5. The ash dust obtained by sieving ash dust such as incinerated ash or incinerated fly ash of general trash to remove impurities and then heat-drying and removing metals such as iron by magnetic separation means and a raw material. A process of mixing and crushing bentonite, zeolite, glass cullet, sludge incineration ash such as raw sewage sludge, and kneading and granulating them while humidifying, and 250 ° C with respect to the granulated material To pre-drying at a temperature of about 500 to 500 ° C., and then sintering and firing the material within a temperature range of 600 to 950 degrees Celsius, and cooling the sintered and fired material to about 200 degrees Celsius. A method for producing an adsorptive oxidation catalyst material used as an artificial aggregate, a lightweight aggregate, or the like, which comprises a step of irradiating this material with electromagnetic waves or an ozone treatment step of passing an ozone atmosphere. 6. Ash dust such as incinerated ash of general waste and incinerated fly ash is sieved to remove impurities, and then heated and dried, and the ash dust obtained by removing metals such as iron by magnetic separation means and a raw material A process of mixing and crushing sludge incineration fly ash such as bentonite, zeolite, glass cullet, and human waste sludge, and kneading and granulating them while humidifying, and a step of 250 ° C. for the granulated material After pre-drying at a temperature of around 600 to 950 ° C., sintering and firing the material within a temperature range of 600 to 950 ° C., and cooling the sintered and fired material to around 200 ° C. Then, a method for producing an adsorptive oxidation catalyst material to be used as an artificial aggregate, a lightweight aggregate, or the like, which comprises a step of irradiating the material with electromagnetic waves or an ozone treatment step of passing an ozone atmosphere. 7. Sludge incineration ash or sludge incineration fly ash, which is substituted for incineration ash, incineration fly ash, etc. of general trash, or mixed in incineration ash, incineration fly ash, etc. of general trash, for example, human waste sludge incineration ash or human waste sludge After removing the contaminants by sieving the ash dust of incineration fly ash, heating and drying, the ash dust from which metals such as iron have been removed by magnetic sorting means, and bentonite as a raw material, zeolite and glass cullet are mixed and ground. Then, a step of kneading and granulating them while moisturizing them to obtain a raw material, and pre-drying the granulated raw material at a temperature of around 250 to 500 ° C., and then at 600 to 950 ° C. A step of performing sintering and firing of the material within a temperature range, and a step of cooling the material subjected to the sintering and firing treatment to around 200 degrees Celsius, and then performing an electromagnetic wave irradiation treatment or an ozone treatment step of passing the material through an ozone atmosphere. Ranaru method for producing -AO catalyst material used as artificial bone materials, lightweight aggregates like.