JPH1199194A - Deodorizing composition, deodorizing device and deodorizing method with it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently remove an odor component having the calbonyl group for deodorization by carrying a compound reacting with the calbonyl group on a hygroscopic carrier under the existence of moisture. SOLUTION: A deodorizing compound is dissolved in a proper solvent such as methanol, it is carried on a hygroscopic carrier together with water, and a heat treatment is applied at a proper temperature to manufacture a deodorizing composition. A hygroscopic inorganic material (silica gel or zeolite) or a hygroscopic polymer (acrylate or acrylic amid) having carrying power for a compound having reactivity with a calbonyl group-containing compound and absorbing the moisture in the processed gas is used for the hygroscopic carrier. A compound (suboxyacid salt, suboxyacid hydrogen salt) having additional reactivity with the calbonyl group or a compound (hydroxylamine or its salt) having condensation reactivity with the calbonyl group is used for the calbonyl group-containing compound serving as the main deodorizing component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a deodorizing composition which can easily and efficiently remove odor components having a carbonyl group such as aldehydes and ketones and deodorize the same, and a deodorizing composition. The present invention relates to a deodorizing apparatus and a deodorizing method used, and this technique can be effectively used particularly for deodorizing odor components in a vehicle room such as an automobile.

[0002]

2. Description of the Related Art As a method for removing odor components in a gas, for example, in the case of large-scale equipment such as sewage treatment equipment or municipal waste incineration equipment, washing water or the like in which a chemical having reactivity with odor components is dissolved is used. The used watering and washing equipment is used. However, for deodorization in a limited space such as a toilet, a room, or a vehicle interior, a large-scale watering and washing facility cannot be provided, and thus a deodorization method using a physical adsorbent such as activated carbon is usually used. Is widely used.

On the other hand, for example, in a cabin of an automobile or the like,
Decomposed gases such as fuels and oils, combustion products derived from tobacco, adhesives used for bonding interior boards and vehicle interior equipment, and malodorous components derived from foamed resin for heat insulation include formaldehyde, acetaldehyde, acrolein, It has been confirmed that odor components having a carbonyl group such as benzaldehyde are contained in a considerable amount, and also in houses and houses, as heat insulating materials, plywood materials, adhesives, and combustion products derived from tobacco. A considerable amount of similar odor components are contained. Regarding these odor components, a method of adsorbing and removing the odor components by, for example, attaching an activated carbon adsorbent filling section to an air purifier or the like is known.

However, the present inventors have confirmed that odor components having high adsorptivity can be adsorbed and removed to some extent by an adsorbent such as activated carbon, but odor components having a carbonyl group as described above cannot be adsorbed by activated carbon or the like. The material can hardly be removed. In particular, physical adsorbents such as activated carbon adsorb and trap odor components in the adsorption sites and deodorize them. When the adsorption sites are saturated by malodorous components, no further adsorption performance is exhibited. In addition, the physical adsorbent also adsorbs moisture (moisture) in the gas to be treated, and if the adsorption site of the adsorbent is saturated with moisture, no further adsorption / capturing ability is exhibited. However, since a large amount of moisture is contained in the gas to be treated in a room such as an indoor room or an automobile room, this kind of physical adsorbent adsorbs water in a very short time to reduce the adsorption activity for odor components. Lose.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has as its object to improve the odor of odors having a carbonyl group such as aldehydes and ketones in a room or a vehicle. A deodorizing composition capable of efficiently removing components and deodorizing the same has been developed. Furthermore, a deodorizing apparatus and a deodorizing method capable of easily removing odor components on a small scale utilizing the deodorizing composition have been developed. It is something to offer.

[0006]

Means for Solving the Problems The deodorizing composition according to the present invention which can solve the above problems is a deodorizing composition for removing an odor component having a carbonyl group. The material has a gist in that a compound that reacts with a carbonyl group in the presence of moisture is supported, and the deodorizing method according to the present invention includes the step of treating a gas to be treated containing an odor component having a carbonyl group. The gist lies in removing the odor component by contacting the above compound with water.

Examples of the water-absorbing support material used in the present invention include a water-absorbing inorganic material and a water-absorbing polymer. Preferred specific examples of the water-absorbing inorganic material include silica gel, zeolite, alumina, activated carbon, and diatomaceous earth. Soil, etc., and as the water-absorbing polymer,
Examples thereof include acrylate, acrylamide, maleic acid, ethylene oxide, and vinyl alcohol homo- or copolymers, modified starch, and modified cellulose. Each of these water-absorbing support materials may be used alone, or two or more of them may be used in combination as needed.

[0008] Preferable specific examples of the compound reacting with the carbonyl group include oxygenates, hydrogen oxalates, mercaptans, xanthogenic acids and salts thereof,
Thiocarbamic acids and salts thereof, hydroxylamines and salts thereof, hydrazines and derivatives thereof, salts thereof, amides and derivatives thereof, and salts thereof, sulfamic acid salts, dimedones, etc., which can be used alone. And two or more kinds can be used in combination.

The deodorizing apparatus according to the present invention includes a filling portion filled with the above-described deodorizing composition, or furthermore, a gas to be treated is efficiently supplied to the filling portion to enhance deodorizing efficiency. It is characterized by the provision of a fan and can be manufactured as an extremely compact device as a whole, so that this device can be very effectively used for deodorizing ordinary indoors and vehicles. Further, the deodorizing device is attached to an air conditioner,
It is recommended that air conditioning and deodorization can be performed at the same time by using a blower of the air conditioner as a preferable embodiment when the present invention device is put into practical use. In this case, the deodorizing composition is
For example, it is preferable to fill a cassette or the like and make it detachable, since replacement after losing the deodorizing function can be easily performed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, in the present invention, deodorization is carried out by chemically reacting an odor component having a carbonyl group with a compound which reacts with a carbonyl group in the presence of water. Is a product in which a compound that reacts with a carbonyl group in the presence of moisture is supported on a water-absorbing support material. That is, the deodorizing composition of the present invention is a compound that is deodorized by chemically reacting a compound supported on a water-absorbing support material with an odor component having a carbonyl group, and a high level of deodorizing efficiency is obtained. Once deodorized, there is no danger of releasing odor components again. Moreover, since the water serving as a reaction medium of the deodorizing reaction is supplemented by the moisture absorbed by the water-absorbing support material, there is no need to supply water from the outside, and the deodorizing reaction which proceeds in the coexistence of water proceeds efficiently. It becomes possible.

The above-mentioned water-absorbing support material used in the present invention has the ability to support a compound having reactivity with a carbonyl group-containing compound and has a property of absorbing moisture in the gas to be treated. The type of the water-absorbing inorganic material and the water-absorbing polymer is not particularly limited as long as the water-absorbing inorganic material and the water-absorbing polymer can be used. Examples of the water-absorbing inorganic material include silica gel, zeolite, alumina, and activated carbon.

As the water-absorbing polymer, acrylate, acrylamide, maleic acid, ethylene oxide and vinyl alcohol homo- or copolymers, modified starch, modified cellulose and the like are preferred. Preferred specific examples include polyacrylates, copolymers of acrylic acid and vinyl alcohol or acrylate or salts thereof, acrylamide polymers, polyethylene oxide, maleic acid-isobutylene copolymer salts, starch and carboxylate. Examples include cellulose acrylate graft-modified products, which can be used alone or, if necessary, in combination of two or more.

The water-absorbing inorganic material among the above-mentioned water-absorbing support materials is usually used in the form of granules in order to suppress the air flow resistance during use. However, in some cases, the material is formed in a honeycomb shape, a porous plate shape or a block shape. It is also possible. It is most common to use the water-absorbing polymer in the form of granules, but in some cases, it is also effective to use a porous sheet or a nonwoven or woven or knitted fabric that can be processed into a fibrous form. It is.

Next, as a compound which reacts with a carbonyl group-containing compound which is a main deodorizing component (hereinafter, sometimes referred to as a deodorizing compound), a compound which exhibits addition reactivity to a carbonyl group or a compound which exhibits an addition reactivity to a carbonyl group Compounds exhibiting condensation reactivity are exemplified, and as the specific examples of the former,
Oxygenates and hydrogen oxynitrides (more specifically, alkali metal bisulfites and alkali metal phosphites),
Mercaptans (more specifically, 2-methylbenzothiazole and the like), xanthogenic acids and their salts (more specifically, sodium isopropylxanthogenate), thiocarbamic acids and their salts (more specifically, zinc dibutyldithiocarbamine) Examples of the latter include hydroxylamine or a salt thereof (more specifically, hydroxylamines such as hydroxylamine hydrochloride, hydroxylamine sulfate and hydroxyamine-o-sulfonic acid), hydrazine and the like. Derivatives or salts thereof (more specifically, hydrazines such as phenylhydrazine and phenylhydrazine-p-sulfonic acid; hydrazides such as benzhydrazide and maleic hydrazide;
Sulfohydrazides such as benzenesulfonyl hydrazide; semicarbazides such as semicarbazide hydrochloride), amides and derivatives thereof and salts thereof (acid amides such as benzamide and benzenesulfonic acid amide and sulfonamides), sulfamic acid salts ( More specifically, ammonium sulfamate), dimedone and the like. When using, for example, hydrogen oxyacid salt among the above deodorizing compounds, it is desirable to use a suitable amount of a stabilizer such as glycerin in order to enhance the stability.

The deodorizing composition of the present invention is prepared by dissolving the deodorizing compound in a suitable solvent such as methanol, supporting the compound together with water on the above-mentioned water-absorbing support material, and performing heat treatment at a suitable temperature. Manufactured. At this time, the amount of the deodorizing compound supported on the water-absorbing support material is not particularly limited, and may be appropriately selected in consideration of the deodorizing activity and the saturated supporting amount of the deodorizing compound, the required deodorizing performance, and the like. Is preferably selected from the range of about 1 to 50 g per 100 g of the water-absorbing support material. In addition, it is possible that the water serving as the reaction medium of the deodorization reaction is not substantially contained at first in anticipation of absorption of moisture contained in the gas to be treated, but a high level of deodorization is provided from the beginning of the deodorization. In order to exert the activity, it is desirable that an appropriate amount of water is absorbed by the water-absorbing support material from the beginning.

By using the deodorizing composition of the present invention, the deodorizing compound supported on the water-absorbing support material is
In the coexistence of water, it reacts with the above-mentioned carbonyl group-containing compound, converts it into an odorless compound, captures it, and can efficiently deodorize it. Specific examples of the odor component to be captured include aldehydes such as formaldehyde, acetaldehyde, acrolein, and benzaldehyde, and ketones such as acetone, methyl ethyl ketone, and methyl isobutyl ketone.

Therefore, when the deodorizing composition is filled in an appropriate container and the gas to be treated is passed through the container, the odor components contained in the gas to be treated are efficiently removed, and the gas is purified into harmless and odorless gas. Be transformed into At this time, it is preferable to dispose a fan at an appropriate position before and after the deodorant-filled portion, since the gas to be treated can be smoothly introduced into the deodorant composition-filled portion. It is of course also effective to make the capacity appropriately adjustable according to the concentration of the odor component contained in the gas to be treated. Further, it is preferable that the deodorizing composition filling section is provided at an appropriate position before and after an air conditioner provided in a room or a vehicle, because the fan of the air conditioner can be used also as a deodorizing fan. .

In addition, it is also possible to arrange a deodorizing device with a fan at the ceiling of the vehicle or behind the rear seats so that the air can be deodorized while circulating the air inside the vehicle. It is one of the preferred embodiments to arrange a combination of a filter and a filter for dust removal so that deodorization and dust removal can be performed simultaneously.

FIG. 1 is a conceptual diagram illustrating a circulating treatment type deodorizing device. A fan 2 for blowing air is provided in a purifying device main body 1, and a dust filter 3 and a deodorizing section 4 are provided downstream thereof. The gas to be treated sucked by the fan 2 is passed through the dust filter 3 and the deodorizing section 4 to remove dust and deodorize the gas to be treated. In the figure, reference numeral 5 denotes a sensor. The sensor 5 detects the degree of contamination of the gas to be treated, and when the degree of contamination reaches a predetermined value, automatically detects the degree of contamination and operates the fan 2. ing. Therefore, if such a purifying device 1 is installed in an appropriate place such as a ceiling portion in a vehicle or behind a rear seat as shown in FIG. 2, the indoor gas can be kept clean.

FIG. 3 is a conceptual diagram in the case where the deodorizing device of the present invention is attached to the air conditioner 6 of the vehicle. The outside air or inside air sent through the dust filter 3 by the fan 2 is removed by the deodorizing section 4 and the evaporator 7. Through the vehicle. In the figure, reference numeral 8 denotes a heater unit, and D ₁ and D ₂ denote switching dampers. Such an air conditioner 6 is usually provided at the front of the vehicle as schematically shown in FIG.

Since the deodorizing composition of the present invention chemically reacts with the odor component having a carbonyl group to deodorize as described above, the deodorizing activity gradually decreases as the period of use elapses, When all of the deodorizing compounds are consumed in the reaction, they lose their deodorizing activity. Therefore, in order to easily replace the deodorizing composition after losing the deodorizing activity, the deodorizing composition is filled in a cassette, and can be detachably attached to the gas treatment site with one touch. It is recommended as a preferred embodiment when the present invention is put into practical use.

Thus, according to the present invention, it is possible to provide a deodorizing composition and a deodorizing method capable of easily and efficiently deodorizing an odor component having a carbonyl group, and using the deodorizing composition. As a result, a compact deodorizing device with high deodorizing efficiency can be provided.

[0023]

EXAMPLES Next, examples of the present invention will be described. However, the present invention is not limited by the following examples, and the present invention can be practiced with appropriate modifications within a range that can conform to the spirit of the preceding and following examples. Of course, it is possible, and all of them are included in the technical scope of the present invention.

Example 1 A deodorant 10 prepared by the following method was charged into a flask 11 having a capacity of 1000 cc as shown in FIG. 4 and injected with a syringe 12 so that acetaldehyde became 1000 ppm. And seal. And after sealing 20 ~ 30 ℃
And the acetaldehyde removal rate after standing for 1 hour was examined. Table 1 shows the results.

(Preparation of Deodorant) Deodorant A: 2 g of sodium bisulfite and glycerin 10
g in a mixture of 20 ml of methanol and 20 ml of distilled water.
m) After impregnating and adhering to 50 g, it was dried at 60 ° C. for 4 hours, and further kept at 40 ° C./85% air for 4 hours to prepare a deodorant A.

Deodorant B: 1 g of hydroxylamine hydrochloride
Was dissolved in a mixture of 10 ml of methanol and 20 ml of distilled water, and the solution was impregnated and adhered to 20 g of zeolite (the same as above), dried at 60 ° C. for 4 hours, and further dried at 40 ° C./85%
And kept in the air for 4 hours to prepare a deodorant B.

Deodorant C: 1 g of hydroxylamine hydrochloride
Is dissolved in a mixture of 10 ml of methanol and 20 ml of distilled water, and the solution is activated carbon (average particle size: 0.5 to 1 mm) 2
After impregnating and adhering to 0 g, the resultant was dried at 60 ° C. for 4 hours and further dried at 120 ° C. for 2 hours to prepare a deodorant C.

Comparative deodorant a: Activated carbon alone was used in a dry state, or 20 g of activated carbon was immersed in 20 ml of distilled water, taken out and dried at 80 ° C. for 4 hours.
It was kept in 85% air for 4 hours and used in a wet state.

Comparative deodorant b: zeolite (as before) alone was used in a dry state, or 20 g of the zeolite was immersed in 20 ml of distilled water, taken out, dried at 80 ° C. for 4 hours, and then dried at 40 ° C./85%. It was kept in the air for 4 hours and used in a wet state.

Comparative deodorant c: 20 g of commercially available silica gel (average particle size: 0.05 to 0.2 mm) was immersed in 20 ml of distilled water, taken out, dried at 80 ° C. for 4 hours, and then dried at 40 ° C.
-It was kept in 85% air for 4 hours and used in a wet state. Comparative deodorant e: 0.2 g of hydroxylamine hydrochloride was used as it was.

[0031]

[Table 1]

From Table 1, the following can be considered. The comparative deodorizers a and b are examples using activated carbon or zeolite, and show a somewhat good deodorization rate in a dry state, but when they are used in a wet state, the adsorption sites are saturated with moisture. It does not show any deodorizing ability (values in parentheses in Table 1). Further, the comparative deodorant c using silica gel alone does not show any deodorizing ability in a wet state.

The target gas to be deodorized usually contains a considerable amount of moisture, and it is almost impossible to keep the deodorant in a dry state. Therefore, activated carbon, zeolite, and silica gel alone cannot be used practically. An effective deodorizing effect cannot be expected under the conditions. Further, even with the comparative deodorant e (example in which the desorption reactive compound is used as it is), satisfactory deodorizing performance cannot be obtained.

On the other hand, the deodorizers A, B, and C satisfying the requirements of the present invention all show high deodorizing ability. Particularly, those carrying a hydroxylamine-based compound are those of acetaldehyde in the gas to be treated. It can be seen that almost all of them were removed, and it has high deodorizing ability.

Example 2 A deodorant was prepared by the following method in accordance with Example 1 described above.
The deodorizing performance was similarly examined for each. Table 2 shows the results
Shown in

(Preparation of Deodorant) Deodorant D: 2 g of sodium bisulfite and glycerin 10
g was dissolved in a mixture of 20 ml of methanol and 20 ml of distilled water.
(0.2 mm) was impregnated and adhered, dried at 60 ° C. for 4 hours, and kept in air at 40 ° C. and 85% for 4 hours to prepare a deodorant D.

Deodorant E: 1 g of hydroxylamine hydrochloride
Was dissolved in a mixture of 10 ml of methanol and 20 ml of distilled water, and the solution was impregnated and adhered to 20 g of zeolite (the same as above), dried at 60 ° C. for 4 hours, and further dried at 40 ° C./85%
Was kept in the air for 4 hours to prepare a deodorant E.

Deodorant F: 1 g of hydroxylamine sulfate
Was dissolved in a mixture of 10 ml of methanol and 20 ml of distilled water, and the solution was impregnated and adhered to 20 g of zeolite (the same as above), dried at 60 ° C. for 4 hours, and further dried at 40 ° C./85%
Was kept in the air for 4 hours to prepare a deodorant F.

Deodorizer G: 0.5 g of sodium phosphite
Was dissolved in 20 ml of distilled water, and the solution was impregnated and attached to 10 g of silica gel (the same as above), dried at 80 ° C. for 1 hour, and further dried at 100 ° C. for 1 hour to prepare a deodorant G.

Deodorant H: 1 g of hydroxylamine-o-sulfonic acid was dissolved in 20 ml of distilled water, and this solution was impregnated and adhered to 20 g of silica gel (the same as above).
After drying for an hour, and further drying at 120 ° C. for 2 hours, a deodorant H was prepared.

Deodorizer I: 0.5 g of benzhydrazide was dissolved in 20 ml of distilled water, and this solution was treated with silica gel (as before).
After impregnating and adhering to 10 g, deodorant I was prepared by drying at 100 ° C. for 1 hour.

Deodorizer J: 0.5 g of benzenesulfonyl hydrazide was dissolved in 20 ml of distilled water, and this solution was impregnated and adhered to 10 g of silica gel (the same as above).
After drying for an hour, a deodorant J was prepared.

Deodorizer K: 0.5 g of phenylhydrazine-p-sulfonic acid was dissolved in 20 ml of distilled water, and this solution was impregnated and adhering to 10 g of silica gel (the same as above).
The resultant was dried at a temperature of 1 hour for 1 hour to prepare a deodorant K.

Deodorant L: 0.5 g of ammonium sulfamate was dissolved in 20 ml of distilled water, and this solution was impregnated and adhered to 10 g of silica gel (the same as above).
After drying for a time, a deodorant L was prepared.

Deodorant M: 0.5 g of semicarbazide hydrochloride
Was dissolved in 20 ml of distilled water, and the solution was impregnated and adhered to 10 g of silica gel (the same as above), followed by drying at 100 ° C. for 1 hour to prepare a deodorant L.

Deodorant N: maleic hydrazide 0.5 g
Was dissolved in 20 ml of distilled water, and this solution was impregnated and adhered to 10 g of H-zeolite (the same as above), followed by drying at 100 ° C. for 1 hour to prepare a deodorant N.

Deodorant O: 1 g of 2-mercaptobenzothiazole was dissolved in 20 ml of ethanol, and this solution was impregnated and adhered to 10 g of silica gel (the same as above), and then dried at 100 ° C. for 1 hour to prepare a deodorant O. .

Deodorant P: 1 g of sodium isopropylxanthate was dissolved in 20 ml of ethanol, and this solution was impregnated and adhered to 10 g of silica gel (the same as above).
The resultant was dried at 0 ° C. for 1 hour to prepare a deodorant P.

Deodorant Q: 1 g of zinc dibutyldithiocarbamate was dissolved in 20 ml of ethanol, and this solution was impregnated and adhered to 10 g of silica gel (the same as above), followed by drying at 100 ° C. for 1 hour to prepare deodorant Q.

Deodorant R: 1 g of benzamide in 20 ml of water
The solution was impregnated and adhered to 10 g of silica gel (as before), and then dried at 100 ° C. for 1 hour to prepare a deodorant R.

Deodorant S: 1 g of benzsulfonamide was dissolved in 20 ml of water, and this solution was treated with silica gel (as before).
g was impregnated and attached, and then dried at 100 ° C. for 1 hour to prepare a deodorant R.

[0052]

[Table 2]

Each of the deodorants shown in Table 2 satisfies the requirements of the present invention, and it can be confirmed that all of them have excellent deodorizing performance.

Example 3 Using the deodorants I, M, N and activated carbon alone (but in a dry state) used in Example 2 above, and maintaining the holding temperature at room temperature (25 ° C.) according to the method shown in FIG. ℃), 80 ℃, 1
After the temperature was changed to 00 ° C. and the temperature was maintained for 30 minutes, the deodorization rate was examined.

The results are as shown in Table 3 and FIG.
Although the deodorant of the present invention exhibits high deodorizing ability under both normal temperature and high temperature conditions, activated carbon alone exhibits a certain degree of deodorizing ability at normal temperature atmosphere (however, it shows almost no deodorizing activity in a wet state). As shown in Table 1), it can be seen that the deodorizing ability is remarkably reduced at a high temperature. This is because, in the case of activated carbon, the substance to be adsorbed is released at a high temperature, and the deodorizing effect cannot be exhibited effectively.

[0056]

[Table 3]

[0057]

The present invention is constituted as described above. By supporting a specific deodorizing compound on a water-absorbing support material, odor components mainly composed of aldehyde can be removed very efficiently with simple equipment. In particular, in the present invention, a water-absorbing substance is used as a support material, and the reaction between the odor component and the deodorizing compound can be efficiently promoted using the water absorbed therein as a reaction medium. Stable deodorizing performance can be ensured, and particularly, it can be effectively used for deodorizing the interior of a vehicle such as an automobile.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a specific example of a deodorizing device according to the present invention.

FIG. 2 is an explanatory view exemplifying an arrangement position of a deodorizing device on a vehicle.

FIG. 3 is an explanatory view showing an example in which the deodorizing device of the present invention is attached to an air conditioner of an automobile.

FIG. 4 is an explanatory view showing an experimental method for evaluating deodorizing performance.

FIG. 5 is a graph showing the relationship between the treatment temperature and the deodorization rate when the deodorant of the present invention and activated carbon are used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Purifier 2 Fan 3 Dust filter 4 Deodorizing part 5 Sensor 6 Air conditioner 7 Evaporator 8 Heater unit 10 Deodorant 11 Flask 12 Syringe

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01J 20/20 B01J 20/20 E 20/22 20/22 A 20/26 20/26 A B60H 3/00 B60H 3/00 Z (72) Inventor Takeshi Nishijima 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. (72) Inventor Taeko Shimizu 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Mazda Co., Ltd. Keiko Machida Co., Ltd. 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture

Claims (12)

[Claims] 1. A deodorizing composition for removing an odor component having a carbonyl group, wherein a compound that reacts with a carbonyl group in the presence of water is supported on a water-absorbing support material. Deodorizing composition. 2. The deodorizing composition according to claim 1, wherein the water-absorbing carrier is at least one selected from a water-absorbing inorganic material and a water-absorbing polymer. 3. The deodorizing composition according to claim 2, wherein the water-absorbing inorganic material is at least one selected from silica gel, zeolite, alumina, and activated carbon. 4. The water-absorbing polymer is at least one selected from acrylate, acrylamide, maleic acid, ethylene oxide, vinyl alcohol homo- or copolymers, modified starch, and modified cellulose. The deodorizing composition according to claim 2. 5. A compound that reacts with a carbonyl group, wherein the compound is a compound selected from the group consisting of oxygenates, hydrogen oxalates, mercaptans, xanthogenic acids and salts thereof, thiocarbamic acids and salts thereof, hydroxyamines and salts thereof, hydrazines and The deodorizing composition according to any one of claims 1 to 4, wherein the composition is at least one selected from the group consisting of a derivative thereof, a salt thereof, an amide, a derivative thereof, a salt thereof, a sulfamate, and a dimedone. 6. The deodorizing composition according to claim 1, which is used for deodorizing vehicles. 7. A deodorizing apparatus comprising a filling section of the deodorizing composition according to claim 1. Description: 8. The deodorizing apparatus according to claim 7, further comprising a filling section of the deodorizing composition and a fan. 9. The deodorizing device according to claim 7, which is attached to an air conditioner. 10. The deodorizing apparatus according to claim 7, which is used for deodorizing a vehicle. 11. The deodorizing device according to claim 7, wherein the filling portion of the deodorizing composition is detachably attached. 12. A gas to be treated containing an odor component having a carbonyl group is brought into contact with the deodorizing composition according to any one of claims 1 to 6 together with moisture to remove the odor component. How to deodorize.