WO2005032605A1 - Desodorisant et son procede de production - Google Patents

Desodorisant et son procede de production Download PDF

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Publication number
WO2005032605A1
WO2005032605A1 PCT/JP2004/012551 JP2004012551W WO2005032605A1 WO 2005032605 A1 WO2005032605 A1 WO 2005032605A1 JP 2004012551 W JP2004012551 W JP 2004012551W WO 2005032605 A1 WO2005032605 A1 WO 2005032605A1
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WO
WIPO (PCT)
Prior art keywords
deodorant
weight
organic material
strength
mixture
Prior art date
Application number
PCT/JP2004/012551
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English (en)
Japanese (ja)
Inventor
Toshihiko Tsuda
Original Assignee
Kobayashi Pharmaceutical Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobayashi Pharmaceutical Co., Ltd. filed Critical Kobayashi Pharmaceutical Co., Ltd.
Publication of WO2005032605A1 publication Critical patent/WO2005032605A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances

Definitions

  • the present invention relates to a deodorant having a high deodorizing effect on acidic, alkaline and neutral odor components.
  • a deodorant for removing odor components in the air one that adsorbs and removes odor components using an adsorbent having a porous structure such as activated carbon is known.
  • the activated carbon has excellent adsorption performance and is widely used as a deodorant.However, it has low strength and is difficult to be formed into an arbitrary shape.At present, it is used as a granular material in a container. And there were restrictions on the design.
  • Patent Document 1 discloses a papermaking sludge containing 30 to 60% by weight, 5 to 30% by weight of aluminums, and 10 to 60% by weight of clays, which is calcined. The adsorbent obtained is described. This adsorbent can be formed into an arbitrary shape by using clays.
  • Patent Document 1 JP-A-63-256132
  • the present invention provides a deodorizing agent that can be molded into an arbitrary shape that has a high deodorizing effect against any of acidic, alkaline, and neutral odor components, and that has sufficient strength after molding.
  • the purpose is to: Means for solving the problem
  • an inorganic raw material such as clay, which has been conventionally used for forming an adsorbent into an arbitrary shape, and an organic material for carbonizing and firing. And carbonizing and firing in a calcined state, it is possible to deodorize acidic odor components such as sulfuric acid hydrogen and methyl mercaptan at the same level as activated carbon, even if the amount of organic materials to be blended is small. As a result, it was found that both the power and ammonia can be effectively deodorized, and the present invention was completed.
  • the inorganic material and the organic material are mixed so that the dry weight of the organic material is less than 30% by weight based on the total dry weight. After kneading and shaping the mixture, the kneaded product is carbonized and fired in an unfired state.
  • the dry weight refers to the weight of an inorganic raw material and an organic material each dried at 105 ° C for 24 hours.
  • firing in the unfired state means firing at a temperature lower than the sintering temperature of the inorganic raw material to form a porous inorganic structure having air permeability.
  • carbonization firing is generated when an organic material is carbonized by firing an organic material together with an inorganic material in a state where air is shut off as in a closed space or a nitrogen atmosphere, and when the organic material is carbonized. This means fixing soot to the fired body.
  • the state of the fired body after carbonization firing is such that the carbide generated by carbonizing the organic material is dispersed in the inorganic porous structure. And a state in which soot is adhered and held on the surface of the porous structure. Therefore, as the deodorant, a fired body whose surface and cross section are colored black can be obtained.
  • the deodorant obtained in the present invention has the ability to deodorize acidic odor components even when the amount of the organic material used as a raw material for carbide is as small as less than 30% by weight. This is a high point.
  • the calcined inorganic structure has almost no ability to deodorize acidic odor components such as sulfuric acid hydrogen and methyl mercaptan, so that the ability to deodorize acidic odor components depends exclusively on the deodorizing capability of activated carbon. become. Therefore, conventionally, it has been considered that it is necessary to increase the amount of activated carbon (carbide) in order to deodorize an acidic odor component. Therefore, there has been a problem that the strength of the fired body is reduced as a result.
  • acidic odor components such as sulfuric acid hydrogen and methyl mercaptan
  • the deodorant according to the present invention can sufficiently deodorize acidic odor components even when the amount of the organic material is small, so that the amount of carbide finally remaining in the fired body is reduced. By suppressing it, the strength of the deodorant can be increased.
  • the amount of the paper sludge (hereinafter referred to as "PS") is changed from 74 to 6% by weight based on the dry weight of the entire mixture to obtain six types of fired bodies. Samples were prepared and their deodorizing performance was evaluated.Each sample was confirmed to deodorize acidic and alkaline odor components at the same level in a well-balanced manner!
  • a deodorant having a PS content of less than 30% by weight has a deodorizing performance equivalent to that of a deodorant containing PS of 30% by weight or more.
  • a deodorant having sufficient strength can be obtained.
  • the strength of the fired body it has been confirmed that if the strength of the unbaked product is 50%, it can be used without any practical problem, and the PS content in the mixture of the deodorant according to the present invention is determined. Is less than 30% by weight, PS content is 23% by weight, 12% by weight, 6% by weight % Is preferable because the strength of the fired body increases.
  • the evaluation was performed only when the PS content was in the range of 6% by weight or more, the evaluation results show that even if the amount of the organic material is less than 6% by weight, sufficient deodorizing performance was obtained. It is presumed to exhibit As the minimum amount of organic material required to exhibit sufficient deodorizing performance, an organic material that can generate soot enough to cover the entire surface of the porous structure should be used. It is presumed that.
  • the inorganic raw material is a raw material for firing, and generally, clay which is a raw material for ceramics or the like can be used.
  • the firing temperature for firing this inorganic raw material in an unglazed state varies depending on the sintering temperature of the inorganic raw material, but is about 770 ° C to 930 ° C for general clay for ceramics. If the temperature is lower than 770 ° C, the strength of the fired body may decrease. If the temperature is higher than 930 ° C, the porous structure may be densified and the surface area of the fired body may decrease.
  • any material that carbonizes while generating soot by carbonization and firing such as rice hulls, paper, wood chips, rice straw, and paper sludge, can be used.
  • the organic material in order to reduce the variation in the strength of the fired body after carbonization firing, it is necessary to make the structure of the fired body uniform, and for that purpose, it is desirable to use the organic material as finely as possible and pulverize it. .
  • paper sludge is discharged in large quantities from paper mills, is easily available, and has short fibers of paper and inorganic substances derived from fillers (kaolin, talc, calcium carbonate, etc.) It is also preferable because it can be easily mixed with inorganic raw materials and a fired body having a uniform structure can be obtained.
  • fillers kaolin, talc, calcium carbonate, etc.
  • the deodorant obtained as described above can be formed into an arbitrary shape having a high deodorizing effect on any of acidic, alkaline, and neutral odor components, and has sufficient strength even after firing. Is very high added value.
  • the deodorant according to the present invention can be formed into an arbitrary shape because the inorganic raw material and the organic material are mixed at a predetermined weight ratio, and this is obtained by carbonizing and firing the raw material. Therefore, although the amount of carbon in the deodorant is small, it is possible to efficiently deodorize acidic odor components, and it is possible to suppress a decrease in the strength of the fired body.
  • clay which is a raw material for ceramics (water content: 20%, SiO: 54.3%, Al 2 O 3
  • Moisture content (% by weight) (initial weight-weight after drying) X 100Z initial weight ⁇ ⁇ ⁇ ⁇ (1)
  • Table 1 shows the dry weight ratio of clay and PS and the content of dry weight of PS relative to the total dry weight of the mixture.
  • the dry weight of the clay and PS was calculated as follows based on the water content calculated by the above equation (1).
  • Clay dry weight actual clay use weight X (l—0.20)
  • PS dry weight actual PS weight X (1-0. 035)
  • the shape of the fired body thus obtained was a bowl shape having a bottom area of 9.4 cm 2 , a height of 6. Ocm, an opening circumference of 21.6 cm, and a wall thickness of 4.7 mm.
  • the fired body has an inorganic porous structure, and carbide is dispersed and maintained in the inorganic porous structure. At the same time, the soot adhered to the porous surface and was in a black state as a whole. Table 1 also shows the weight of the fired body obtained for each sample.
  • the deodorizing performance was evaluated using the seven types of deodorizing agents prepared as described above. As an evaluation method, first, each sample was grouped in groups of four, and each of the samples was stored in a 10 liter tedranock. Four types of odor components, ammonia, trimethylamine, hydrogen sulfide, and methylmercaptan were used.Eight liters of the reference gas, each prepared to a concentration of 100 ppm, was sealed in the four tedrapacks above, and at predetermined intervals The gas concentration was measured (detector tube method), and based on the measured gas concentration, the deodorization rate was calculated by the following equation (2).
  • Deodorization rate (%) (initial gas concentration measured gas concentration) x 100Z initial gas concentration ⁇ ⁇ ⁇ ⁇ (2)
  • activated carbon a commercially available deodorant containing 44 g of activated carbon
  • the carbon content (% by weight) in the deodorant was measured using the above seven types of deodorants. The measurement conditions are described below.
  • an elemental CHN automatic analyzer (varioEL) equipped with a thermal conductivity detector was used, and helium gas (gas flow rate: 200 ⁇ 5 ml Zmin) was used as a carrier gas.
  • the temperature was set at 950 ° C for the combustion tube and 500 ° C for the reduction tube.
  • Acetairide was used as a reagent, and analysis was performed with a sample amount of 3 mg. The obtained carbon content was multiplied by the weight of each sample to calculate the carbon content (g) present in the sample (fired body). Table 1 shows the results of these analyses.
  • a strength test was performed using the above seven types of deodorants.
  • the test contents are as follows.
  • the strength was evaluated using a rheometer (manufactured by Sun Kagaku) under the following conditions.
  • the unbaked product has an acidic odor component, hydrogen sulfide and methyl mercaptan, which have poor deodorizing performance. It can be seen that the deodorization rate is lower than other baked samples (samples 16 and unbaked products) even after the elapse.
  • the samples 116 produced in the present embodiment efficiently deodorized any of the odor components of ammonia, trimethylamine, hydrogen sulfide and methyl mercaptan.
  • methyl mercaptan which is an acidic odor component (FIG. 4, Table 5)
  • the deodorizing rate is higher and the deodorizing rate is reached earlier than activated carbon.
  • the sample 116 has a bowl shape and has a large contact area in direct contact with the odor component, whereas the activated carbon is contained in a container as a set of granular materials, and therefore exists inside. This was presumed to be due to the fact that the granular material was unlikely to come into contact with the odor component. Thus, the performance of the deodorant It is considered that the shape is greatly affected by the shape of the material as well as the adsorption performance of the material itself.
  • the strength of the deodorant exceeds 5815, and the strength of the deodorant is higher than about 60% of the strength of the unglazed product. Will be. It has been confirmed that if it has a strength that is 50% of the strength of the unglazed product, it can be used practically without any problems, and as a result, a deodorant with unprecedented superior strength Can be obtained.
  • the strength of the unbaked product is 69%
  • the strength of the unbaked product is 74%
  • the PS content is 6% by weight.
  • the strength of each of the unbaked products is 81%, and it can be seen that the strength of the fired body increases as the PS content decreases. Therefore, the lower the PS content, the more preferable the strength of the fired body.
  • the amount of the organic material was less than 6% by weight, or the carbon content was 1.
  • the minimum amount of organic material required to exhibit sufficient deodorizing performance should be an amount of organic material capable of generating soot enough to cover the entire surface of the porous structure.
  • FIG. 1 is a graph showing the ammonia deodorizing performance of each deodorizing agent.
  • FIG. 2 is a graph showing the deodorizing performance of trimethylamine in each deodorant.
  • FIG. 3 is a graph showing the deodorizing performance of sulfur dioxide on each deodorant.
  • FIG. 4 is a graph showing the deodorizing performance of methyl mercaptan for each deodorant.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Treatment Of Sludge (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

La présente invention vise à fournir un désodorisant présentant un effet élevé de désodorisation sur de ingrédients malodorants indépendamment de leur caractère acide, alcalin ou neutre et une force suffisante. L'invention a trait à un désodorisant obtenu par le mélange d'une matière première inorganique avec une matière organique pour la carbonisation/combustion de sorte que la quantité de matière organique en termes de matière sèche soit inférieure à 30 % en poids par rapport à la totalité du mélange, le malaxage du mélange, et la carbonisation/combustion du mélange obtenu en un produit de type poterie non vitrifié
PCT/JP2004/012551 2003-09-30 2004-08-31 Desodorisant et son procede de production WO2005032605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-342700 2003-09-30
JP2003342700A JP2005103110A (ja) 2003-09-30 2003-09-30 脱臭剤及びその製造方法

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WO2005032605A1 true WO2005032605A1 (fr) 2005-04-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256132A (ja) * 1987-04-14 1988-10-24 Miyajima Shoji 吸着材
JPH054012A (ja) * 1991-06-26 1993-01-14 Minoru Igami ペーパースラツヂを原料とする濾過材
JPH1179864A (ja) * 1997-09-08 1999-03-23 Maruishi Yogyo Genryo Kk 炭化セラミックス
JP2001270773A (ja) * 2000-01-10 2001-10-02 Oyo Kikaku:Kk 吸着剤
JP2002079098A (ja) * 2000-09-07 2002-03-19 Shimaya:Kk 排気ガス浄化用のセラミックスの製造方法及び排ガス浄化用コンバータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256132A (ja) * 1987-04-14 1988-10-24 Miyajima Shoji 吸着材
JPH054012A (ja) * 1991-06-26 1993-01-14 Minoru Igami ペーパースラツヂを原料とする濾過材
JPH1179864A (ja) * 1997-09-08 1999-03-23 Maruishi Yogyo Genryo Kk 炭化セラミックス
JP2001270773A (ja) * 2000-01-10 2001-10-02 Oyo Kikaku:Kk 吸着剤
JP2002079098A (ja) * 2000-09-07 2002-03-19 Shimaya:Kk 排気ガス浄化用のセラミックスの製造方法及び排ガス浄化用コンバータ

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