JPH05315070A - Deodorizing smoke consumer using dielectric heating element - Google Patents

Abstract

PURPOSE:To perform deodorization and smoke consumption by forming the atomosphere of high temperature by the generation of a dielectric heating unit, arranged in a pipe line connected to an exhaust port of an incinerator or an internal combustion engine, and allowing exhaust to pas through in this atmosphere. CONSTITUTION:A device s formed of a tubular base unit 2 formed with a pipe line 6 coated with a radio wave transmitting heat insulating material 3 in the internal peripheral part to further cover an almost outside total unit with a radio shield material 13, dielectric heating unit arranged in the concerned base unit pipe line and a microwave oscillator 4 arranged between the radio shield material and the radio wave transmitting heat insulating material 11 to supply a microwave emitted to the concerned dielectric heating unit, to connect one end part of the pipe line to an exhaust port of an incinerator or internal combustion engine. Space 12, formed between the radio wave transmitting heat insulating material and the radio shield material, may be ventilated, and a blowing means 5, connected to an incinerator connected side in the pipe line to blow air toward an exhaust side, may be mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing and smoke eliminating device connected to an incinerator or an exhaust port of an internal combustion engine. Specifically, a high temperature atmosphere is formed by the heat generated by the dielectric heating element arranged in the pipe, and the exhaust gas is passed through the high temperature atmosphere.
The present invention relates to a deodorizing and smoke eliminating device using a dielectric heating element for performing deodorization and smoke elimination.

[0002]

BACKGROUND OF THE INVENTION Conventionally, high-frequency radio waves, mainly microwaves (about 1 GHz to
The principle of dielectric heating, which radiates 30 GHz) to heat the substance by itself, has been widely and generally known. This principle has been widely used in various fields such as adhesion of microwave ovens and laminated single plate materials, sterilization of foods, and the like.

However, most of these have been used for the purpose of directly treating the processed substance by generating heat. The heat generated by an object (dielectric heating element) generated by the dielectric heating principle is used for other purposes, for example, as a heat source for incinerators and boilers, and also for incinerators or internal combustion engines such as engines. The indirect use of the so-called dielectric heating phenomenon, which was used as a heat source for exhaust gas treatment, has not been performed so much.

By the way, theoretically, it is possible to obtain a heat generation temperature by dielectric heating up to a considerably high temperature of 2000 ° C. or higher, but there is no heat generating body capable of withstanding this, and this development has been awaited. However, in recent years, a heating element that enables this has been developed, and several cases have begun to appear. But,
As an example of using this heating element, for example, only a high temperature incinerator for waste of medical equipment has been manufactured.

[0005]

DISCLOSURE OF THE INVENTION The present invention applies such a dielectric heating element as a secondary combustion chamber of an incinerator and utilizes it in a device for deodorizing and smoking the exhaust gas from the incinerator.
Further, such a device can be used as a device for treating exhaust gas of an internal combustion engine such as an engine.

Conventionally, the secondary combustion chamber has been operated using a burner using gas or liquid as fuel. In particular, the exhausted gas also contains toxic gas, and in terms of preventing air pollution, the treatment of this waste gas has become an increasingly important issue in recent years. For that reason, it is an effective method to remove the bad odor by passing the waste gas through a high temperature atmosphere to decompose it.

However, these have an upper limit to the internal temperature, and in order to maintain a high temperature, the size of the device becomes large and the amount of fuel consumption must be large. Therefore, the present invention focuses on the highly heat-resistant dielectric heating element, forms a high-temperature atmosphere by this high-temperature heat generation, and allows exhaust gas to pass through this to perform deodorization and smoke elimination by thermal decomposition. The present invention provides a deodorizing and smoke eliminating device that uses a novel dielectric heating element that is capable of achieving high energy efficiency.

[0008]

In order to achieve the above object, the deodorizing and smoke eliminating apparatus using the dielectric heating element of the present invention is configured as follows. That is, a conduit is formed inside,
And a tubular base body substantially entirely outside of which is covered with a radio wave shielding material, a dielectric heating element arranged in the base conduit, and a microwave oscillating device for supplying and radiating microwaves to the dielectric heating element. It is characterized in that one end of the pipeline is connected to an exhaust port of an incinerator or an internal combustion engine.

Further, as a further structure, a tubular base body whose inner peripheral portion is covered with a radio wave transmitting heat insulating material, and substantially the entire outside thereof is covered with a radio wave shielding material, and the base body pipeline. A dielectric heating element disposed inside the microwave heating device and a microwave oscillating device for supplying and radiating a microwave to the dielectric heating element, the microwave oscillating device being disposed between the radio wave shielding material and the radio wave transmitting heat insulating material. One end is characterized by being connected to an incinerator or an exhaust port of an internal combustion engine.

Further, a space may be formed between the radio wave transmitting heat insulating material and the radio wave shielding material, and the space may be ventilated. An air supply unit that communicates with the incinerator connection side in the pipe line and supplies air toward the discharge side may be attached. In this case, the ventilation that has flowed through the space may be supplied to the inside of the pipe by the air supply unit.

[0011]

With this construction, the present invention operates as follows. The microwave radiated from the microwave oscillating device causes the dielectric heating element in the pipeline to generate heat, so that the space inside the pipeline becomes a high temperature atmosphere. When the exhaust gas of the incinerator flows into the atmosphere, the toxic gas contained therein is thermally decomposed and rendered harmless. At the same time, the smoke will be extinguished so that it cannot be seen.

In addition, the air flowing through the ventilation space absorbs heat and has a heat insulating effect. Further, by supplying the heated ventilation to the inside of the pipe by the air supply device, the flow velocity of the pipe is increased and the exhaust efficiency of the incinerator is improved without lowering the internal temperature.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one example of a concrete embodiment of the hot air combustion apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a vertical cross-sectional view showing the entire apparatus of the present embodiment, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 (without piping). Further, FIG. 3 is a plan view showing a state in which the apparatus of the embodiment is attached to the incinerator.

The device 1 of this embodiment is mainly composed of a substrate 2, a dielectric heating element 3, a microwave oscillating device 4, and an air supply means 5. The base body 2 has a pipe line 6 formed therein, one end portion 6a of which is connected to an exhaust port 8 of an incinerator 7, and the other end portion 6b of which is connected to an inflow port 10 of a dust collector 9. There is. The inner peripheral portion 6s of the conduit 6 is formed of a radio wave transmitting heat insulating material 11 such as ceramic. Further, the entire outer side of the outer space, through the ventilation space 12, metal, etc.
It is covered with a radio wave shielding material 13 formed by a known technique. This prevents the radiated microwave from leaking to the outside together with the heat insulation in the pipe line 6.

A plurality of rod-shaped dielectric heating elements 3 each having an appropriate length are embedded in the inner peripheral portion 6s of the conduit 6 at a part of one end thereof in the radio wave transmissive heat insulating material 11, and most of the other portion is not covered. It is planted and arranged almost vertically so that it is exposed. The dielectric heating element 3 is planted from the upper, lower, left, and right directions (in FIG. 2) of the inner peripheral portion 6s toward the center, and is arranged in the horizontal direction in the inner peripheral portion 6s (in FIG. 1). It is divided into 3 groups and divided into 3 groups 3a, 3b and 3c.

The dielectric heating element 3 used here is
The one that meets the desired standard is appropriately selected from several types that currently exist, but by way of example, the desired name and "Arcabo" (manufacturer: Nara Seiki Co., Ltd.) were able to obtain the desired desired effect. Further, the sectional shape of the conduit 6 is not limited to the rectangular shape, and may be a circular shape or an elliptical shape as appropriate.

Furthermore, in this embodiment, the dielectric heating element 3 is used.
The rods are arranged by arranging the rods, but the present invention is not limited to this. For example, a columnar body that matches the inner diameter of the pipe line 6 is formed, and innumerable in the pipe line direction. The dielectric heating element 3 may have a shape in which small tubes are arranged in an opening. Since the dielectric heating element 3 is molded by using ceramic as a main component, its shape can be appropriately set.

Next, the microwave oscillating device 4 is made to correspond to the three groups 3a, 3b, 3c of the dielectric heating element 3 from the outside of the radio wave transmitting heat insulating material 11 constituting the pipe 6, and (see the drawings). (In the above), they are arranged independently above and below. It should be noted that this arrangement is not limited to the upper and lower sides, and may be the upper, lower, left, or right sides. The microwave oscillating device 4 is configured by using a magnetron, which is a known technique, and various control devices are arranged inside the microwave oscillating device 4. Therefore, the microwave oscillating device 4 is arranged outside the radio wave shield 13 which is less affected by heat. A waveguide 14 is connected to this, and is arranged outside the radio wave transmitting heat insulating material 11 excluding the radio wave shielding material 13 so as to open in a position direction corresponding to the dielectric heating element 3. Thereby, the microwave oscillated from the microwave oscillating device 4 is supplied to the dielectric heating elements 3a, 3b,
It is supposed to radiate to 3c.

In this way, the dielectric heating element 3 is divided into three groups,
The microwave oscillating device 4 corresponding to each of them is arranged so as to control the operation of each microwave oscillating device 4 so that each heating element group 3a, 3b, 3
This is because the temperature inside the conduit 6 can be controlled in a wide range by appropriately setting the heat generation point in c. Next, pipeline 6
The air supply pipe 1 is provided on the exhaust port 8 side (right side in FIG. 1).
5 are communicated. The air supply pipe 15 is connected to the air supply means 5 such as a blower. This air is supplied to the other end 6 of the conduit 6.
The flow rate is set to flow toward b, which improves the exhaust efficiency from the incinerator 7, and when the dust collector 9 connected to the next stage is, for example, a cyclone type, , The flow velocity is increased and it becomes more effective.

A pipe 1 for mainly feeding air from the air supply means 5 to the air supply pipe 15 and the ventilation space 12 for absorbing heat.
6 is connected. Furthermore, from the air supply means 5 to the air supply pipe 1
5, a jet pump 17 is interposed between the air pumps 5, and the air heated by flowing in the ventilation space 12 is recovered by the intake pipe 18 and is combined with the air supply of the air supply means 5 to form the conduit 6 I am trying to send air to. The reason why the jet pump 17 is used in this way is to avoid damage to the air supply means 5 due to high temperature air.

The air supply pipe 15 connected from the air supply means 5 into the pipe line 6 is not essential, and if the exhaust gas flow rate from the exhaust port 8 is high, it is not necessary to install the pipe. The intended effect of the invention is achieved. Further, numeral 19 is an exhaust pipe for allowing the ventilation in the ventilation space 12 to escape to the outside of the atmosphere if necessary. In the deodorizing and smoke eliminating device 1 of the present embodiment configured as described above, as a result of the implementation, the microwave oscillating device 4 of 1.2 KW output is arranged vertically and the dielectric heating element group 3 corresponding to this is set to 50. As a result of heat generation, the heat generation temperature reached about 2000 degrees. As a result, the exhaust gas from the incinerator 7 was completely deodorized, and the waste smoke was extinguished so that it could not be visually recognized.

[0022]

[Effects] With the above structure, the present invention has the following effects. Since the dielectric heating element is used as a heat source, a high temperature can be obtained, and the energy conversion efficiency is high, so that energy can be saved. This leads to cost savings and has a great economic effect.

Further, since the high temperature atmosphere can be easily obtained by selecting the dielectric heating element, the toxic gas contained in the exhaust gas can be effectively decomposed and the smoke can be extinguished. Therefore, if this device is connected to the next stage of various incinerators and internal combustion engines, effective prevention of air pollution can be expected. Further, since the air warmed in the ventilation space is sent to the inside of the pipe by the air sending means, there is an advantage that the internal temperature drop can be made smaller than sending only the outside air.

In principle, oxygen is not required to generate heat from the dielectric heating element, so the gas sent to the heating space need not be air, and combustion exhaust gas can be circulated and sent, resulting in thermal efficiency. Also has the effect of improving. Furthermore, the deodorizing and smoke eliminating apparatus of the present application does not require piping for supplying fuel and oxygen, and can be configured to have a simple and compact appearance, and therefore an apparatus equipped with various incinerators and internal combustion engines. It can be applied to a wide range, for example, as a measure against automobile exhaust gas.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the entire device of this embodiment.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 (pipes are omitted).
Is shown.

FIG. 3 is a plan view showing a state in which the deodorizing and smoke eliminating device of the device of this embodiment is attached to an incinerator.

[Explanation of symbols]

1 ... Device of this Example 2 ... Base 3.
..Dielectric heating elements 3a, 3b, 3c ... Dielectric heating element group 4.
..Microwave oscillating device 5 ... Air supply means 6 ... Pipe line 6a
.. (Pipe line) one end 6b .. (Pipe line) other end 6s
.. (Pipeline) inner circumference 7 ... Incinerator 8 ... Exhaust port 9
..Dust collector 10 ... Inlet 11 ...
..Ventilation space 13 ... Radio wave shielding material 14 ... Waveguide 15
..Air pipe 16 ... Piping 17 ... Jet pump
18 ... Suction pipe 19 ... Exhaust pipe

Claims (5)

[Claims] 1. A tubular base body (2) having a pipe line (6) formed inside and having substantially the entire outside covered with a radio wave shielding material (13), and a tubular base body (2) arranged in the pipe line (2). And a microwave oscillating device (4) for supplying and radiating microwaves to the dielectric heating element (3), wherein one end (6a) of the pipeline (6) is an incinerator. (7) or a deodorizing and smoke eliminating device using a dielectric heating element, which is connected to an exhaust port (8) of an internal combustion engine. 2. A tubular substrate (2) having a pipe line whose inner peripheral portion is covered with a radio wave transmissive heat insulating material (11) and whose substantially outer side is covered with a radio wave shielding material (13). A dielectric heating element (3) arranged in the conduit (2), the radio wave shielding material (13) and a radio wave permeable heat insulating material (11)
And a microwave oscillating device (4) for supplying and radiating microwaves to the dielectric heating element (3), wherein one end (6a) of the pipe (6) is an incinerator (7). Or a deodorant smoke eliminating device using a dielectric heating element, which is connected to an exhaust port (8) of an internal combustion engine. 3. A dielectric heating element according to claim 2, wherein a space (12) is formed between the radio wave transmitting heat insulating material (11) and the radio wave shielding material (13), and the space is ventilated. Deodorizing and smoke removing device using the body. 4. An air supply means (5), which is connected to the incinerator connection side in the pipe line (6) and supplies air toward the discharge side, is attached. A deodorizing and smoke eliminating device using the dielectric heating element described in 3. 5. The dielectric heating according to claim 4, wherein the ventilation flowing through the space (12) according to claim 3 is sent to the inside of the pipe line (6) by the sending means (5). Deodorizing and smoke removing device using the body.