JP2001340442A - Deodorizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance deodorizing effect by effectively decomposing liberated odor (such as organic solvent), in a deodorizing equipment provided with functions that adsorb malodor on an adsorbent and liberate the odor from the adsorbent by acting a high temperature air on the adsorbent that has adsorbed the malodor. SOLUTION: An adsorbing robot that contains the adsorbent and having a passing area 5A of a gas to be treated and a passing area 5B of heated air is freely rotated with a motor 5M and the odor gas liberated by heating is introduced and decomposed on a path to the passing area 5B of the heated air in an odor decomposition unit 18 of a plasma catalyst chamber 17 where plasma discharge is performed.

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 concentrating and decomposing malodorous substances.

[0002]

2. Description of the Related Art A processing apparatus for concentrating and decomposing malodor such as an organic solvent is disclosed in, for example,
An apparatus for concentrating malodorous substances described in JP-A-244125 is known. This treatment device uses activated carbon, zeolite, etc. as an odor adsorbent, and releases and regenerates odors from the adsorbent by applying high-temperature air to the odor (solvent, etc.) adsorbed by the adsorbent. Then, the released odor is heated to a high temperature and decomposed by a platinum catalyst.

[0003]

However, the above-mentioned processing apparatus is characterized in that the odor released from the adsorbent is simply passed through a platinum catalyst layer provided on the deodorizing gas exhaust portion side of the rotor containing the adsorbent. However, since it is oxidized and deodorized by the platinum catalyst layer, and it is possible to reduce the size of the entire apparatus, it is not necessary to burn concentrated malodorous substances in a separate combustion apparatus as in the related art. Although it is economical to carry out at a low cost, there is a problem that the decomposition efficiency when decomposing the released odor is low, and a sufficient deodorizing effect cannot be obtained.

[0004] Accordingly, the technical problems of the present invention are a function of adsorbing malodor and adsorbing it, and a function of removing odor from the adsorbent by applying high-temperature air to the adsorbent adsorbing the malodor. In the deodorizing apparatus provided with the above, the deodorized odor (organic solvent or the like) is efficiently decomposed to enhance the deodorizing effect.

[0005]

Means for Solving the Problems (1) In order to solve the above-mentioned technical problems, the present invention comprises a passage area for a gas to be treated and a passage area for a heated air, as described in claim 1 above. And a deodorizing device configured to rotate an adsorption rotor containing an adsorbent therein around an axis, thereby continuously repeating adsorption of the odor to the adsorbent and release of the odor by the heated air. On the flow passage following the passage of the heated air, the inside is filled with a catalyst, and a plurality of insulating tubes through which an air flow provided with electrodes on the outside and inside are arranged and mounted side by side. The odor decomposition unit, which can apply a plasma power between the electrodes, is configured so as to provide a plasma catalyst chamber having a structure in which a plurality of odor decomposition units are stacked in parallel to the air flow, so that the odor once heated and released from the adsorbent is removed. , Since it is introduced into an odor decomposition unit that performs plasma discharge to decompose odor, discharge decomposition can be performed at a high temperature, and more effective decomposition processing can be performed.

(2) In the present invention, as described in claim 2, the odor decomposition unit is constructed such that a frame having a rectangular outer shape is partitioned into an odor gas introduction chamber and a processing gas discharge chamber by a partition plate. A plurality of insulating tubes filled with a particulate catalyst substance inside the partition plate, the lower end of which is open to the odor gas introduction chamber, and the upper end of which is open to the processing gas discharge chamber. In addition to being configured by being arranged in a line in a row, the odor decomposition unit is configured by providing a connection terminal on the side surface of the frame body, which connects each electrode provided at the center of the outside and inside of each of the insulating tubes. ,
It can be made comparatively thin in units of insulated tubes arranged in a line, and the required number of these can be stacked side by side, and by connecting each electrode to the wiring, the required capacity can be stored in the plasma catalyst chamber. Comparatively easily the plasma catalyst part of
In addition, it can be constructed at low cost.

(3) In the present invention, as described in the third aspect, connection ports communicating with the odor gas introduction chamber and the processing gas discharge chamber are opened on both sides of the frame constituting each odor decomposition unit. Then, by fitting the connection ports of the adjacent odor decomposition units to each other, the respective odor gas introduction chambers and the respective processing gas discharge chambers are formed in the lateral direction on the flow path following the passage area of the heated air, and Each of the lower and upper ports has a plasma catalyst chamber composed of an odor gas inlet chamber and a large number of insulating tubes opened to the processing gas discharge chamber, which are connected to each other. However, by simply arranging them in parallel, it is possible to efficiently process a large amount of gas at the same time, and therefore can be expanded in any manner according to the gas flow rate for processing the plasma catalyst section. Less And enable.

(4) According to the present invention, a spiral spring for preventing the catalyst material from falling off and jumping out is attached to the inside of the upper and lower portions of the insulating tube filled with the catalyst material. Since the upper spiral spring is provided with a knob for removal, when replacing the catalyst in the insulating tube, after removing the odor decomposition unit, remove the knob and take out the upper spiral spring and turn the insulating tube upside down. The catalyst inside can be easily taken out and can be easily filled with the catalyst. The resilient force of the spiral spring and the air permeability allow the catalyst to be filled without affecting the air flow. It is possible to hold the catalyst securely.

(5) Further, in the present invention, as described in the fifth aspect, the odor-decomposed gas stream in the plasma catalyst chamber is discharged to the outside of the body through the heat exchanger and is sucked from the outside of the body. After the air is heat-exchanged through the heat exchanger, the air is heated by a heater and sent into the passage of the heated air of the adsorption rotor. Accordingly, it is possible to reduce the heater power by utilizing the air for deodorization.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a deodorizing apparatus according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front sectional view illustrating the entire configuration of the present invention, and FIG. FIG. 2 is a side cross-sectional view of a main part, and the body of the deodorizing device generally indicated by reference numeral 1 in the figure is partitioned into a suction portion 1X, a deodorization portion 1Y, and an exhaust portion 1Z by partition plates 6, 8 in order from the bottom. Have been
The suction section 1X is partitioned into a suction chamber 4A having a primary suction port 2 and an air filter 3 by a partition plate 4, and a secondary fan chamber 4B having a secondary fan 15F and its fan motor 15M. Have been.

Reference numeral 5 denotes a honeycomb-type adsorption rotor provided in a deodorization chamber 7 in the deodorization section 1Y. The adsorption rotor 5 containing an adsorbent (not shown) such as activated carbon or hydrophobic zeolite therein is driven by a motor 5M. In the deodorizing chamber 7, the air is horizontally rotated. In FIG. 1, the area on the right side is the primary air that enters the suction chamber 4A while being filtered from the primary suction port 2 by the air filter 3. That is,
The passage area 5A of the gas to be treated (odorous gas) is formed, and the area on the left side of the passage area passes through the ducts 13A and 13B while being heated by the heater 14 and passes through the secondary fan 15A.
F is a passage area 5B for the heated air sucked into the fan case 15 side, and the deodorant passes through these two passage areas 5A and 5B alternately and repeatedly according to the rotation of the adsorption rotor 5. I have.

9 is a fan chamber provided in the exhaust part 1Z,
9F is a primary fan rotated by the motor 9M, 10 is a primary exhaust port, and the gas to be processed sucked from the primary inlet 2 by the rotation of the primary fan 9F is removed by the air filter 3 to remove coarse dust. After being collected, the odor is adsorbed by the adsorbent from the suction chamber 4A through the passage area 5A of the gas to be treated in the adsorption rotor 5 to deodorize the odorous substances. The primary exhaust port 10 is configured to be exhausted to the outside.

Further, in the drawing, reference numeral 11 denotes a secondary air inlet opening at the upper part of the deodorizing chamber 7, 12 denotes a heat exchanger also provided in the deodorizing chamber 7, and 13 denotes one end connected to the heat exchanger 12. The other end is connected to the duct 13A, and the secondary air is sucked from the inlet 11 of the secondary air by the rotation of the secondary fan 15F in the fan case 15 provided in the secondary fan chamber 4B. After the secondary air (outside air) is heat-exchanged through the above-described heat exchanger 12 configured to utilize the heat generated by the plasma catalyst unit described later for heating the intake-side air (exchange rate is about 50%). The adsorbent is heated to a high temperature of about 300 ° C. by the heaters 14 in the heater chamber 13 and then enters the passage 5B of the heated air of the adsorption rotor 5 through the duct 13A to adsorb the concentrated malodorous substance. Heating Thus has a mechanism to disengage the malodorous substances.

The air flow containing concentrated malodorous substances released from the adsorbent decomposes the malodorous substances from the duct 13B through the fan case 15 and the duct 16 under the suction of the secondary fan 15F. Plasma catalyst chamber 17
After the odorous substances are decomposed and removed, the air is discharged to the outside air through the heat exchanger 12 and the secondary exhaust port 30. Next, the structure of the plasma catalyst chamber 17 is described with reference to FIG. 3 to FIG. 6 will be described.

FIG. 3 is a partial cross-sectional front view for explaining the structure of the plasma catalyst chamber 17.
Is a lower chamber 17C to which the distal end 16A of the duct 16 is connected by partition plates 17A and 17B on both sides.
And the upper chamber 17D.
As shown in FIG. 2, the exhaust port 17F leading to the
7 through the respective conduits 12A of the heat exchanger 12, and further through the respective ducts 28 and 29.
It leads to the next exhaust port 30.

FIGS. 4, 5 and 6 show a partial cross-sectional side view of a plurality of odor decomposition units 18 stacked in parallel in the plasma catalyst chamber 17 in parallel with the air flow, and FIG. FIG. 3 is a cross-sectional view taken along a line and a line Y-Y. Each odor decomposition unit 18 is configured to be detachable from a plasma catalyst chamber 17 and has an outer shape formed in a substantially rectangular shape. The odor gas introduction chamber 1 that communicates the inside of the frame with the above-described lower chamber 17C by the partition frame 18X.
8 'and a processing gas discharge chamber 18 "communicating with the above-described upper chamber 17D. On both sides of each of the chambers 18' and 18", adjacent odor decomposition units 18, 18... The connection ports 18A, 18A 'for receiving and the connection ports 18 for fitting, which can be freely fitted to each other, can be arranged side by side.
B, 18B 'are formed with openings.

Reference numerals 18E and 18F denote connecting flat plates and fitting frames formed on both side surfaces of each odor decomposition unit 18, and each flat plate 1 of adjacent odor decomposition units 18, 18.
When 8E is fitted into each fitting frame 18F as shown in FIG. 3, fitting connection ports 18B, 18B 'are fitted into adjacent receiving connection ports 18A, 18A', and the adjacent connection ports 18B, 18B 'are fitted. The odor decomposition units 18, 18 are stacked side by side in a state where the respective odor gas introduction chambers 18 'and the processing gas discharge chambers 18 "communicate with each other.

Further, in the figure, 19 ... each odor decomposition unit 1
8, the lower end opening 19S
Into the odor gas introduction chamber 18 ', and
A plurality of (six in the drawing) insulating tubes 9T are mounted in a line with the 9T being opened to the processing gas discharge chamber 18 ″, and each of these insulating tubes 19 is formed using a quartz glass tube or the like.
Is filled with a large number of particulate catalyst substances 20 such as, for example, a platinum catalyst, as shown in FIGS. As shown in the figure, a spiral spring 20A for the lower stopper is fitted, and a spiral spring 20B for the upper stopper with a knob 20C for taking out is fitted on the upper side, so that the catalyst substance 20 can fall off and pop out. Preventing.

A round rod-shaped internal electrode 21 is inserted into each of the insulating tubes 19, and flat external electrodes 25 are attached to both side surfaces thereof. The external electrodes 25, which are connected to the connection terminals 21 'protruding from the front surface of the odor decomposition unit 18 via the electrode plate 22, are further connected to the respective flat external electrodes 25 via a holding frame 18Y which holds the insulating tubes 19 in a line. Also connected to the connection terminals 25 'protruding from the front of the odor decomposition unit 18 and through the connection terminals 21', 25 '.
During this time, a power supply for performing a plasma discharge can be applied.

In the figures, reference numerals 23, 24 and 27 denote insulators, 2
Reference numeral 1A denotes a slit for locking a spiral spring 20A for a lower stopper provided on the lower end side of the internal electrode 21.

The odor decomposition unit 18 constructed as described above
According to the plasma catalyst chamber 17 in which a large number of
The air flow containing the malodorous substances sent into the lower chamber 17C through the duct 16 by the secondary fan 15F is sent to the odor gas introduction chamber 18 'of each odor decomposition unit 18.
From each of the insulating tubes 19, and a plasma discharge is performed inside each of these insulating tubes 19 filled with a large number of particulate catalyst substances 20, and passes between these catalytic substances 20. It is capable of decomposing odorous gas (VOC gas), and the decomposition and discharge product molecules are adsorbed on the surface of the catalyst substance 20 in a state excited by discharge plasma, so that more effective decomposition treatment is performed. Can be.

The heat generated by the decomposition of the offensive odor gas in the plasma catalyst chamber 17 is used in the heat exchanger 12 to heat air for removing the adsorbent (such as zeolite) from the adsorption rotor 5. , The power consumption of the heater 14 can be reduced.

[0023]

As described above, according to the deodorizing apparatus of the present invention, the odor adsorbed by the adsorbent present in the passage area of the heated air is heated and released, and then the released odor is removed. Each of the odor decomposition units in the plasma catalyst chamber capable of applying a plasma discharge, specifically, is sent into an insulating tube filled with a catalyst to decompose the odor. Therefore, discharge decomposition can be performed more effectively at a high temperature, decomposition efficiency can be improved, and odor decomposition can be further promoted.

Further, in the present invention, since the plasma catalyst chamber is constituted by arranging a large number of odor decomposition units in parallel, a large amount of gas can be processed at the same time. Combined with the fact that it is possible to reduce and reduce the size of the catalyst, as well as to facilitate the replacement of the catalyst and to improve the maintainability, it is extremely suitable for use in deodorizing various malodorous substances. .

[Brief description of the drawings]

FIG. 1 is a front sectional view illustrating an entire deodorizing device according to the present invention.

FIG. 2 is a side sectional view of the present invention.

FIG. 3 is a partial cross-sectional front view illustrating a configuration of a plasma catalyst chamber used in the present invention.

FIG. 4 is a partial cross-sectional side view of an odor decomposition unit installed in a plasma catalyst chamber.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a sectional view taken along line YY of FIG. 4;

7A is a front sectional view showing an enlarged insulating tube filled with a catalyst substance, FIG. 7B is a perspective view of a spiral spring for an upper stopper, and FIG. 7C is a spiral spring for a lower stopper. It is a perspective view of.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deodorizing apparatus body 5 Adsorption rotor 5M motor 5A Passage area of gas to be treated 5B Passage area of heated air 12 Heat exchanger 14 Heater 17 Plasma catalyst chamber 18 Odor decomposition unit 18 'Odor gas introduction chamber 18 "Processing gas discharge chamber 18A, 18A 'Connection port for receiving 18B, 18B' Connection port for fitting 19 Insulation tube 20 Particulate catalyst material 20A, 20B Spiral spring 20C Knob 21, 25 Electrode capable of plasma discharge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinya Uchida 1-6-2 Shintoda, Hamamatsu-shi, Shizuoka Amano Co., Ltd. Inside Tsutoda Techno Office (72) Inventor Masanori Hirooka 1-6-, Shintoda, Hamamatsu-shi, Shizuoka 2 Amano Corporation Tsuda Techno Office (72) Inventor Takeshi Tsujimoto 1-6-2 Shintoda, Hamamatsu-shi, Shizuoka Prefecture Amano Corporation Tsuda Techno Office F-term (reference) 4C080 AA07 BB02 CC12 HH02 JJ03 KK10 MM04 QQ12 QQ17 4D012 CA09 CC03 CC05 CG01 CH01 CH05 CK03 CK10 4D048 AA22 CC29 CC36 CC40 CD01 EA03

Claims (5)

[Claims] An adsorption rotor having a passage area for a gas to be treated and a passage area for heated air and rotating an adsorption rotor containing an adsorbent therein about an axis to reduce odor adsorption to the adsorbent. A deodorizing apparatus configured to continuously repeat elimination of odor by heated air, wherein a catalyst is filled inside on a flow passage following a passage area of the heated air, and electrodes are provided outside and inside the center. A plasma catalyst with a structure in which a plurality of insulated tubes through which an air flow can pass are mounted side by side, and a plurality of odor decomposition units that can apply plasma power between these inner and outer electrodes are stacked in parallel to the air flow A deodorizing device characterized by having a chamber. 2. The odor decomposition unit according to claim 1, wherein the inside of the frame having a rectangular outer shape is partitioned by a partition plate into an odor gas introduction chamber and a processing gas discharge chamber, and a particulate catalyst substance is provided inside the partition plate. A plurality of insulated tubes filled with, the lower end opening is opened in the odor gas introduction chamber, and the upper end opening is opened and arranged in a row in the processing gas discharge chamber, and is configured by mounting in a line, 2. The deodorizing apparatus according to claim 1, wherein connection terminals are provided on the side surfaces of the insulating tubes so as to be electrically connected to electrodes provided outside and inside the respective insulating tubes. 3. Opening ports connecting the odor gas introduction chamber and the processing gas discharge chamber on both sides of the frame constituting each odor decomposition unit, and fitting the connection ports of the adjacent odor decomposition units together. Thereby, the odor gas introduction chambers and the processing gas discharge chambers are formed laterally in communication with each other on the flow path following the passage area of the heated air, and the odor gas introduction chambers communicate with the lower end port and the upper end port thereof. 3. The deodorizing apparatus according to claim 1, wherein a plasma catalyst chamber comprising a plurality of insulating tubes opened to the processing gas discharge chamber is formed. 4. A spiral spring for preventing the catalyst substance from dropping and jumping out is mounted inside the upper and lower parts of the insulating tube filled with the catalyst substance, and the upper spiral spring is provided with a knob for taking out. The deodorizing device according to claim 1, 2 or 3, wherein: 5. An air stream decomposed by odor in the plasma catalyst chamber is discharged to the outside of the body through a heat exchanger.
The air sucked from the outside of the container is heat-exchanged through the heat exchanger, and then heated by a heater and sent into a passage of heated air of the adsorption rotor. Or the deodorizing device according to 3.