JP3487078B2 - Deodorizing device for garbage processing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device of a garbage disposer for treating garbage by decomposing microorganisms.

[0002]

2. Description of the Related Art A method for decomposing microorganisms is known as a method for treating raw garbage discharged from homes and the like. When this raw garbage is treated, a gas containing ammonia and a sulfide component such as methyl disulfide is generated. Since these components cause a bad odor, deodorization by ozone, deodorization by dilution,
Deodorization has been attempted by adsorbing it on activated carbon or the like.

[0003]

However, deodorization by ozone requires a great deal of care and is difficult to handle because safe maintenance is required because ozone is toxic. Deodorization by dilution is
The gas requires a large amount of fresh air, which is about 5000 times, in order to not detect the bad smell. Adsorption with activated carbon has a long adsorption life only for a short time because a large amount of ammonia gas is adsorbed in the processing of raw garbage.

The present invention has been made in view of the above facts, and an object of the present invention is to deodorize a garbage processing machine that decomposes microorganisms to treat garbage and maintains odor component purification for a long period of time. To provide.

[0005]

A deodorizing device for a garbage disposer according to claim 1 of the present invention is connected to a processing chamber 1 for disposing of garbage by decomposition of microorganisms and discharged from this processing chamber 1. A deodorizing device of a garbage processor for purifying gas containing an odorous component, said device comprising a first purifying chamber 3 for purifying ammonia in the gas on the gas inlet 2 side, and a first purifying device. The gas having passed through the chamber 3 is introduced to have a second purification chamber 4 for purifying sulfides in the gas, and the first purification chamber 3 is converted into gas.
Tomo comes from the spray chamber 31 for spraying the heated aqueous solution
In addition, the second purification chamber 4 has an oxidation catalyst layer heated at the front.
41 and a porous adsorbent layer 42 at the rear part .

With the above structure, the gas content is high.
Ammonia is removed first, followed by sulfide purification.
Also, since the aqueous solution is sprayed, the contact area increases and
High efficiency of removing ammonia. Moreover, with the above configuration,
Since the gas from which ammonia has been removed in the first purification chamber 3 has been heated, it does not lower the surface temperature of the oxidation catalyst layer 41, so the purification function of the oxidation catalyst layer 41 is high. Further, since the sprayed aqueous solution is also heated, the removal efficiency of ammonia is high in this respect as well .

According to a second aspect of the present invention, there is provided a deodorizing device for a garbage disposer according to claim 1, wherein the oxidation catalyst layer 41 is provided on the surface of a heater 43 having fins 44. , Ru, Rh, Pb, Ag, Os, I
A coating film containing at least one of r, Pt, and Au is formed.

According to a third aspect of the present invention, in the deodorizing apparatus for a garbage disposer according to claim 1 or 2 , in the deodorizing apparatus for a garbage disposer, the sprayed aqueous solution is a phosphoric acid aqueous solution. Characterize.

According to a fourth aspect of the present invention, in the deodorizing device for a garbage disposer according to claim 1 or 2 , in the deodorizing device for a garbage disposer, hypochlorite is added to the sprayed aqueous solution. It is characterized by being an aqueous solution.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail. FIG. 1 is a schematic view schematically showing a main part of a deodorizing device of a garbage disposal according to an embodiment of the present invention.

The debris processing apparatus to which the deodorizing apparatus of the present invention is applied has a processing chamber 1 for processing the debris by decomposition by microorganisms. The gas generated in the above treatment contains a large amount of ammonia and a small amount of sulfur compounds as odorous components. Specifically, ammonia accounts for 99% by volume or more in the odor component of the generated gas. The present invention is a deodorizing device for a garbage disposal that purifies such odorous gas and maintains it in a good state for a long period of time.

The deodorizing device is connected to the processing chamber 1 and has a first purification chamber 3 for purifying ammonia on the gas inlet 2 side.
The second purification chamber 4 for purifying sulfides is provided on the side of the purified gas discharge port 6. The feature of the present invention is that the first purification chamber 3
Is provided with a spray chamber 31 for spraying the gas with the aqueous solution. The first purification chamber 3 is provided with a water storage tank 32 that stores an aqueous solution (including only water), and the water is aspirated from the water storage tank 32 by a pump or the like and sprayed into the spray chamber 31 from above. Ammonia in the gas dissolves in the aqueous solution and is removed, but since the aqueous solution is sprayed in particular, the contact area between the aqueous solution and the gas increases and the ammonia removal efficiency increases. In addition, water tank 3
If a water supply port and a drain port are provided in 2, the aqueous solution can be easily replaced, and thus it is easy to handle.

As the above-mentioned aqueous solution to be sprayed, it is preferable to use an aqueous solution of phosphoric acid because ammonia dissolved in simple water may be released again. When the phosphoric acid aqueous solution is used, the ammonia in the gas is neutralized, and the ammonia salt is not released again, so that the efficiency of ammonia removal is increased. Furthermore, it is preferable to add hypochlorous acid to the above-mentioned aqueous solution because a bactericidal action can be obtained.

The gas that has passed through the first purification chamber 3 is introduced into the second purification chamber 4. The second purification chamber 4 is, for example, a porous adsorbent layer 4 as a device for purifying sulfide.
2 is provided. Examples of the porous adsorbent forming the porous adsorbent layer 42 include activated carbon and zeolite. A fan 5 is provided at the exhaust port 6 of the deodorizing device, and by operating the fan 5, the gas moves in the direction shown by the arrow in the figure.

As described above, since the deodorizing device first removes ammonia having a large content in the gas, it protects the porous adsorbent layer 42 such as activated carbon for purifying sulfides from ammonia and its function. The decrease can be prevented. As a result, the purification of odorous components can be maintained for a long period of time.

Next, a deodorizing apparatus according to an embodiment of the present invention shown in more detail than FIG. 1 will be described with reference to FIG. FIG. 2A is a cross-sectional view showing the outline of the main part, and FIG. 2B is an explanatory view of a heater used for it.

In the above deodorizing device, a gas suction port 2 is formed on the upper wall surface of the device main body, and a water tank 32 for storing an aqueous solution is provided above the first purification chamber 3 adjacent to the suction port 2. The structure is such that the aqueous solution is sprayed from the sprinkling pipe 33 into the spray chamber 31. A water supply port 34 is formed in the water storage tank 32, and an aqueous solution is supplied as needed. The spray chamber 31
Is provided with a heater 43 and heats the inside of the spray chamber 31. The bottom surface of the spray chamber 31 is an inclined plate 36,
The sprayed aqueous solution is collected in a slanted downward direction, and the collected aqueous solution is drained from the drain port 35 to the outside. The gas that has passed through the first purification chamber 3 is exhausted above the inclined plate 36,
Has been introduced into the purification room 4 of. The second purification chamber 4 is
A heater 43 having an oxidation catalyst layer 41 formed on the surface thereof is provided above, and a porous adsorbent layer 42 that traverses the second purification chamber 4 is provided below. The oxidation catalyst layer 41 is made of Ru, Rh, Pb, A.
A coating film containing at least one of g, Os, Ir, Pt, and Au is formed. The heater 43 is a rod-shaped heating wire type and has fins 44 attached to the periphery thereof. The heater 43 is heated to oxidize and decompose sulfide components such as methyl disulfide in the gas due to the oxidation catalytic action of the material. Activated carbon is provided as the porous adsorbent layer 42. A fan 5 is provided below the second purification chamber 4, and a safety cover 7 is provided at the exhaust port 6.

From the gas introduced into the deodorizing device, ammonia is removed in the first purification chamber 3 and sulfides are removed in the second purification chamber 4. At this time, the gas from which ammonia has been removed is introduced into the oxidation catalyst layer 41 in a heated state, so that the surface temperature of the oxidation catalyst layer 41 is not lowered, and the purification function of the oxidation catalyst layer 41 is enhanced. . Since it has both the oxidation catalyst layer 41 and the porous adsorbent layer 42, it has a high purification function for sulfide components. Further, since the sprayed aqueous solution is also heated, the removal efficiency of ammonia is high.

The deodorizing device of the garbage disposal of the present invention is not limited to the above-mentioned embodiment, and for example, a photocatalyst such as titanium oxide may be provided between the first purification chamber 3 and the second purification chamber 4. The layer and an ultraviolet lamp for irradiating the photocatalyst layer are provided,
The purification capacity may be further improved.

[0020]

EFFECT OF THE INVENTION Deodorizing device for garbage disposal according to the present invention
Since the spraying an aqueous solution, increasing the contact area of the solution and gas, with the removal efficiency of the ammonia is increased, since the previously removed more ammonia having weight-containing gas, such as activated carbon for purifying sulfide porous The quality-based adsorbent layer 42 can be protected from ammonia and its functional deterioration can be prevented.
As a result, the purification of odorous components can be maintained for a long period of time.

Furthermore, since the gas from which ammonia has been removed in the first purification chamber 3 has been heated, the surface temperature of the oxidation catalyst layer 41 is not lowered, so the oxidation catalyst layer 41
The purification function is high. As a result, the function of purifying odorous components is further improved.

[Brief description of drawings]

FIG. 1 is a schematic view schematically showing a main part of a deodorizing device of a garbage disposal according to an embodiment of the present invention.

FIG. 2A is a cross-sectional view showing an outline of a main part of a deodorizing apparatus for a garbage disposal according to an embodiment of the present invention, and FIG. 2B is an explanatory view of a heater used therein . Is.

[Explanation of symbols]

1 processing room 2 suction port 3 First purification room 4 second purification room 5 fans 31 spray chamber 32 water tank 41 Oxidation catalyst layer 42 Porous adsorbent layer

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-57-159524 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B09B 3/00 B01D 53/34 116

Claims (4)

(57) [Claims] 1. A deodorizing device for a garbage disposal machine, which is connected to a processing chamber (1) for processing garbage by decomposing microorganisms and purifies gas containing an odorous component discharged from this processing chamber (1). Therefore, the above device introduces a first purification chamber (3) for purifying ammonia in the gas and a gas that has passed through the first purification chamber (3) into the gas suction port (2) side, There is a second purification chamber (4) for purifying the sulfide therein, and the first purification chamber (3) is a spray chamber (3) for spraying a gas heated aqueous solution.
1) and the second purification chamber (4) has a front part
Oxidation catalyst layer (41) heated to the end and porous at the rear
A deodorizing device for a garbage disposal, comprising a system adsorbent layer (42) . 2. The oxidation catalyst layer (41) according to claim 1,
On the surface of the heater (43) with fins (44), Ru,
Any of Rh, Pb, Ag, Os, Ir, Pt, Au
The deodorizing device for a garbage disposal according to claim 1, wherein a coating film containing one or more of them is formed . 3. The aqueous solution to be sprayed is an aqueous phosphoric acid solution.
The deodorizing device for a food waste disposer according to claim 1 or 2 . 4. The hypochlorous acid is added to the sprayed aqueous solution.
1. The method according to claim 1 or claim 2, which is an aqueous solution.
Item 2. A deodorizing device for a garbage processor according to item 2 .