JP2001079350A - Deodorizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that whole malodorous material is not removed and a material converted to other material is not completely removed by a conventional deodorizing device using only an absorptive body. SOLUTION: The malodorous material unable to be removed by a catalyst body 2 and the material converted to other material are completely removed by an adsorptive body 3 at a post stage by providing the catalyst body 2 carrying a catalyst and providing the absorptive body 3 at the post stage of the catalyst body 2 at an air passage 4 in a casing 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing apparatus for removing a bad smell in a toilet or a bathroom, a bad smell in a room, and the like.

[0002]

2. Description of the Related Art Many deodorizing apparatuses use only an adsorbent, including many air purifiers. Further, a deodorant using only a metal oxide is disclosed in JP-A-8-25740.
There is a deodorant as represented by No. 6.

[0003]

However, the conventional deodorizing apparatus uses only an adsorbent and adsorbs and removes malodorous substances. However, there is no adsorbent that adsorbs all malodorous substances. , Can not completely remove malodorous substances. Furthermore, in the case where the catalytic action of the metal oxide is used as a deodorant, for example, hydrogen sulfide is adsorbed, but methyl mercaptan is changed to dimethyl disulfide, which cannot be completely removed as a bad odor. Have.

[0004]

In order to solve the above-mentioned problems, the present invention provides a method in which a malodorous substance which is difficult to be adsorbed by an ordinary adsorbent passes through a catalyst portion of a preceding catalyst body or a catalyst-integrated adsorbent body. By changing to an odorless substance by its adsorption action and catalytic action, or by changing it to a substance that is easily adsorbed by an adsorbent, it is adsorbed and removed by the adsorbent part of the subsequent adsorbent or catalyst-integrated adsorbent It is.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 has a catalyst body carrying a catalyst and an adsorbent body carrying an adsorbent at a stage subsequent to the catalyst body in a ventilation path, and means for ventilating. The deodorizing device is characterized in that:

When a malodorous substance is passed through a catalyst body carrying a catalyst, a part is adsorbed by the catalyst body and a part can be changed to an odorless substance or another substance. The changed substance and the remaining malodorous substance can be removed by the subsequent adsorbent supporting the adsorbent.

According to a second aspect of the present invention, there is provided a catalyst-integrated adsorbent in which a catalyst and an adsorbent are mixed and supported, provided in a ventilation path,
The deodorizing device is characterized by having a means for ventilating.

When a malodorous substance is passed through a catalyst-integrated adsorbent in which a catalyst and an adsorbent are mixed and supported, most of the substances are adsorbed by the adsorbent, but substances not adsorbed by the remaining adsorbent are mixed and supported. Can be changed to a substance adsorbed by the adsorbent by the catalyst. By adsorbing the changed substance with the adsorbent, all offensive odor substances can be removed.

According to a third aspect of the present invention, there is provided the deodorizing apparatus according to the first or second aspect, wherein the catalyst is a metal oxide.

When a metal oxide is used as the catalyst, the activity of the catalyst is large, and when a malodorous substance is passed through the catalyst, it can be quickly changed to an odorless substance or another substance.
This changed substance can be removed by a subsequent adsorbent or an adsorbent mixed with a catalyst.

According to a fourth aspect of the present invention, the metal oxide contains at least one selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc. The deodorizing device according to claim 3 is provided.

If at least one selected from the group consisting of oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc is used as the metal oxide, the activity of the catalyst is high, and the catalyst body is free of malodorous substances. Upon passage, it can be rapidly transformed into an odorless substance or another substance. This changed substance can be removed by a subsequent adsorbent or an adsorbent mixed with a catalyst.

According to a fifth aspect of the present invention, the metal oxide is at least two or more selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper, and zinc. 4. The deodorizing apparatus according to claim 3, which contains a composite oxide.

When at least two or more kinds selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc are used as the metal oxide, they form a composite oxide, When the catalyst has a high activity and allows a malodorous substance to pass through the catalyst body, it can be rapidly changed to an odorless substance or another substance. This changed substance can be removed by a subsequent adsorbent or an adsorbent mixed with a catalyst.

According to a sixth aspect of the present invention, the adsorbent contains at least one selected from the group consisting of zeolite, activated carbon, silica gel, and silicon oxide. Deodorizing equipment.

If at least one selected from the group consisting of zeolite, activated carbon, silica gel and silicon oxide is used as the adsorbent, the adsorbent has a high adsorbing ability, so that the passing odorous substances can be adsorbed and removed quickly and reliably.

According to a seventh aspect of the present invention, there is provided the deodorizing apparatus according to the sixth aspect, wherein the zeolite is a hydrophobic zeolite.

If a hydrophobic zeolite is used as the zeolite, the adsorption of moisture is small, so that the adsorbing ability is not reduced even in a high-humidity atmosphere.

The invention described in claim 8 is the deodorizing device according to claim 1, wherein the catalyst body and the adsorbent are made of a ceramic material and have a honeycomb structure.

If a ceramic material is used as the catalyst and the adsorbent, the catalyst and the adsorbent are deteriorated even if a corrosive malodorous substance or a malodorous substance containing a large amount of moisture is passed through the catalyst because of high corrosion resistance. Without being converted, it can be changed to an odorless substance or another substance and removed by a subsequent adsorbent.

According to a ninth aspect of the present invention, there is provided the deodorizing apparatus according to the second aspect, wherein the catalyst-integrated adsorbent has a honeycomb structure using a ceramic material.

If a ceramic material is used as the catalyst-integrated adsorbent, corrosion resistance is high. Therefore, even if the adsorbent has a corrosive malodorous substance or a malodorous substance containing a large amount of moisture, it can be adsorbed without deteriorating the catalyst-integrated adsorbent. can do.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a diagram showing a configuration of Embodiment 1. The deodorizing apparatus of the present embodiment has a casing 1, a catalyst body 2 carrying a catalyst inside the casing 1, and an adsorbent body 3 carrying an adsorbent. Is what passes.

In the present embodiment, a mixed gas of hydrogen sulfide, ammonia, and methyl mercaptan is used as the malodorous substance 5, a composite oxide of manganese, copper, and cobalt is used as the catalyst 2, and a hydrophobic oxide is used as the adsorbent 3. Zeolite is used, and a honeycomb structure made of a ceramic material is used as a support for the catalyst bodies 2 and 3.

The operation of this embodiment will be described below.
Hydrogen sulfide, ammonia, and methyl mercaptan as the malodorous substances 5 passing through the inside of the casing 1 are all adsorbed by the catalyst 2 in the preceding stage, and most of the ammonia passes. Further, methyl mercaptan is entirely converted to dimethyl disulfide by the effect of a catalyst. And the latter adsorbent 3
Thus, ammonia is completely adsorbed, and dimethyl disulfide changed from methyl mercaptan is completely adsorbed, so that all of the offensive odor substances 5 are removed.

The results of an experiment for verifying the effect of the present embodiment will be described below.

The first experiment was carried out using a deodorizer using the above-mentioned catalyst and adsorbent, a deodorizer using only the adsorbent as a conventional example, and a deodorizer using only the catalyst as a conventional example. Hydrogen, ammonia, and malodorous substances of methyl mercaptan were mixed at a concentration of 50 ppm, respectively, and the space velocity SV = 1
The concentration of hydrogen sulfide, ammonia, methyl mercaptan and the mixed gas of dimethyl disulfide changed from methyl mercaptan after flowing at 0000 h ^-1 and passing through the catalyst and the adsorbent is measured, and the removal rate is measured. It is. The result of this experiment is shown in FIG.

As shown in FIG. 2, if the deodorizing apparatus of this embodiment is used, even mixed malodorous substances can be completely removed for 10 hours. This means that the concentration of the usual malodorous substance is, for example, 0.05 ppm in the toilet, but in this embodiment, the acceleration test is 1000 times, and the life is 10,000 hours. This has a life expectancy of nine years if used for three hours a day.

In the second experiment, when the same experiment as the first experiment was performed by changing the type of metal oxide used,
The removal rate of the malodorous substance after 5 hours and the time until the removal rate becomes 90% were measured. The results of this experiment are shown in (Table 1).

[0031]

[Table 1]

As a result of this experiment, when manganese oxide or copper oxide was used as the metal oxide, the longest removal rate was the highest, then the effect of zinc oxide was high, and titanium oxide,
It was found that chromium oxide, iron oxide, cobalt oxide, and nickel oxide had high effects.

In the third experiment, two kinds of metal oxides were used, and a composite oxide was prepared therefrom.
When the same experiment as that of the above was conducted, the removal rate of the malodorous substance after 5 hours and the time until the removal rate became 90% were measured. The results of this experiment are shown in (Table 2).

[0034]

[Table 2]

As a result of this experiment, manganese and copper, manganese and cobalt, manganese and zinc, and manganese and iron are all representative of metal composite oxides, all of which have high removal rates over a long period of time and further have other composite oxides. It turned out that the effect was high even with things.

In the fourth experiment, when the type of the adsorbent used was changed and the same experiment as the first experiment was performed, the removal rate of the malodorous substance after 5 hours and the removal rate became 90%. It measures the time until. The results of this experiment are shown in (Table 3).

[0037]

[Table 3]

As a result of this experiment, it was found that when zeolite or activated carbon was used as the adsorbent, the removal rate was the longest, and the effect of silica gel and silicon oxide was high.

(Embodiment 2) FIG. 3 is a diagram showing a configuration of Embodiment 2. The deodorizing apparatus according to the present embodiment has a housing 1 and a catalyst-integrated adsorbent 11 in which a catalyst and an adsorbent are mixed and supported inside the housing 1. Is what passes.

In the second embodiment, a mixed gas of hydrogen sulfide, ammonia and methyl mercaptan is used as the malodorous substance 5.
1: 1 composite oxide of copper and cobalt and hydrophobic zeolite
And a ceramic honeycomb is used as a carrier of the catalyst-integrated adsorbent 11.

The operation of the second embodiment will be described. Hydrogen sulfide, ammonia, and methyl mercaptan as the malodorous substances 5 that pass through the inside of the casing 1 are all adsorbed by the catalyst inside the catalyst-integrated adsorbent, and most of the ammonia is not adsorbed. Further, methyl mercaptan is entirely converted to dimethyl disulfide by the effect of a catalyst. Then, in the adsorbent portion, ammonia is completely adsorbed, and further, dimethyl disulfide changed from methyl mercaptan is completely adsorbed, so that all of the offensive odor substances 5 are removed.

In the second embodiment, an experiment was conducted in the same manner as in the first embodiment, using the deodorizer using the above-described catalyst-integrated adsorbent. The result of this experiment is shown in FIG.

As shown in FIG. 2, if the deodorizing apparatus of this embodiment is used, even the mixed malodorous substance can be completely removed for 7 hours. This means that the concentration of the usual malodorous substance is, for example, 0.05 ppm in the toilet, but in this embodiment, the acceleration test is 1000 times, and the life is 7000 hours. This has a life expectancy of seven years if used for three hours a day.

[0044]

As described above, according to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, there is provided a catalyst body carrying a catalyst, and an adsorbent body carrying an adsorbent at a stage subsequent to the catalyst body in a ventilation path, and means for ventilating the catalyst body. As a configuration, a deodorizer that can partially remove malodorous substances with the catalyst in the first stage, change some into odorless substances or another substance, and completely remove malodorous substances with the adsorbent in the second stage It is.

According to the invention of claim 2 of the present invention, a catalyst-integrated adsorbent in which a catalyst and an adsorbent are mixed and supported is provided in a ventilation path, and means for ventilating is provided. An object of the present invention is to realize a deodorizing device that can adsorb a part of the malodorous substance, change a part of the substance to an odorless substance or another substance, and completely remove the malodorous substance at the adsorbent portion.

According to the invention of claim 3 of the present invention, since the catalyst is a metal oxide, the activity of the catalyst is large, the malodorous substance is quickly changed to an odorless substance or another substance, and the latter adsorbent is used. Alternatively, the present invention realizes a deodorizing device that can be completely removed through an adsorbent mixed with a catalyst.

According to the fourth aspect of the present invention, the metal oxide is at least one selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc. Deodorization that the catalyst has a large activity and converts malodorous substances quickly to odorless substances or other substances, and can be completely removed through the adsorbent at the later stage or adsorbent mixed with the catalyst. It implements the device.

According to the fifth aspect of the present invention, the metal oxide is at least two kinds selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc. In addition, as a composition that contains those forming a complex oxide, the activity of the catalyst is large, the odor substance is quickly changed to an odorless substance or another substance, and the adsorbent in the latter stage or the adsorbent mixed with the catalyst The present invention realizes a deodorizing device that can be completely removed through the air.

According to the sixth aspect of the present invention, the adsorbent contains at least one selected from zeolite, activated carbon, silica gel, and silicon oxide. The object of the present invention is to realize a deodorizing device capable of quickly and surely adsorbing and removing malodorous substances because of its high cost.

According to the seventh aspect of the present invention, since the zeolite is a hydrophobic zeolite, since the hydrophobic zeolite absorbs little moisture, it can emit malodorous substances even in an atmosphere having high humidity. The present invention realizes a deodorizing device which has a high adsorption capacity and can adsorb and remove malodorous substances more quickly and surely.

According to the invention of claim 8 of the present invention, the catalyst body and the adsorbent have a honeycomb structure using a ceramic material. Since the ceramic material has a high corrosion resistance, the catalyst body and the adsorbent can be used. It is an object of the present invention to provide a deodorizing apparatus that can completely remove a corrosive malodorous substance and a malodorous substance containing a large amount of moisture without deteriorating a catalyst and an adsorbent.

According to the ninth aspect of the present invention, the catalyst-integrated adsorbent has a honeycomb structure using a ceramic material, and the ceramic material has high corrosion resistance. It is an object of the present invention to provide a deodorizing apparatus capable of completely removing a corrosive malodorous substance or a malodorous substance containing a large amount of moisture without deteriorating a catalyst-integrated adsorbent.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a deodorizing apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram showing experimental results of Example 1 of the present invention.

FIG. 3 is a diagram illustrating a configuration of a deodorizing apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Catalyst 3 Adsorber 4 Ventilation path 5 Odorous substance 11 Catalyst integrated adsorber

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Tadashi Suzuki 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. F-term (reference) 4C080 AA05 AA07 BB02 CC04 CC05 CC08 CC12 CC13 HH05 JJ03 KK08 MM02 MM04 MM05 MM06 QQ03 4D048 AA22 BA07X BA16X BA25X BA28X BA35X BA36X BA37X BA38X BA41X BA42X BB02 BA04B03 BC03 AB04 BC03A BC50A BC50B BC58A BC58B BC62A BC62B BC66A BC66B BC67A BC67B BC68A BC68B CA04 CA10 CA17 DA06 EA19 ED01

Claims (9)

[Claims] 1. A deodorizing device comprising: a catalyst body carrying a catalyst; and an adsorbent body carrying an adsorbent provided downstream of the catalyst body in a ventilation path, and means for ventilating. 2. A deodorizing apparatus comprising: a catalyst-integrated adsorbent supporting a mixture of a catalyst and an adsorbent, provided in a ventilation path, and means for ventilating the adsorbent. 3. The deodorizing apparatus according to claim 1, wherein the catalyst is a metal oxide. 4. The method according to claim 1, wherein the metal oxide contains at least one selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc. Item 3. A deodorizing device according to Item 3. 5. The metal oxide is at least two kinds selected from oxides of titanium, chromium, manganese, iron, cobalt, nickel, copper and zinc, and they form a composite oxide. The deodorizing device according to claim 3, comprising: 6. The adsorbent according to claim 1, wherein the adsorbent contains at least one selected from zeolite, activated carbon, silica gel and silicon oxide.
The deodorizing device described. 7. The deodorizing apparatus according to claim 6, wherein the zeolite is a hydrophobic zeolite. 8. The deodorizing apparatus according to claim 1, wherein the catalyst and the adsorbent are made of a ceramic material and have a honeycomb structure. 9. The deodorizing apparatus according to claim 2, wherein the catalyst-integrated adsorbent has a honeycomb structure using a ceramic material.