WO2005077846A1 - Millimetric-wave irradiation head and waste disposal system - Google Patents

Abstract

It is intended to conduct disposal of wastes, such as sulfate pitch, at minimized cost and to minimize adverse effects on work force, disposal facilities and environment. Accordingly, there is provided a millimetric-wave irradiation head comprising a tube or rod of heat resistant glass such as quartz glass and, disposed at its one end, a millimetric-wave irradiation part capable of millimetric-wave irradiation toward the heat resistant glass. The portion of heat resistant glass of this millimetric-wave irradiation head is inserted in a waste vessel, and the waste is irradiated with millimetric-wave and thus heated.

Description

 Description Millimeter-wave irradiation head and waste treatment system Technical field

 The present invention relates to a millimeter wave irradiation head for irradiating a container such as a drum can with a high frequency wave, particularly a millimeter wave, and performing a treatment such as gasification on waste in the container, and a millimeter wave irradiation head. It relates to a waste treatment system using a head. Background art

 Highly acidic waste, such as sulfuric acid pitch, is extremely dangerous to handle, and its disposal is extremely difficult. Generally, it is incinerated or solidified by adding a neutralizing agent. The following published patent publication can be cited as a related technology. There is a method in which a neutralizing agent such as slaked lime is added to neutralize the mixture and then heated and dehydrated to form agglomerates, as in the "sulfuric acid pitch treatment method" in JP-A-06-169599. In Japanese Patent Application Laid-Open No. 2002-62073, "Neutralizing agents such as sulfuric acid pitch and waste oil and powders thereof" are described in Japanese Patent Application Laid-Open No. 2002-62073, in which stone powder is mixed with bentonite and stirred while sending hot air to obtain a neutralizing agent. There is a statement to the effect.

Although the handling of sulfuric acid pitch in the treatment cycle involves a great deal of danger, the illegally dumped sulfuric acid pitch has an extremely large danger. In particular, sulfuric acid pitch generated when kerosene makes illegal gas oil It is a serious social problem that people are illegally dumped in drums and other containers without taking care of them. After a long period of time, the tar content has solidified.

 If such sulfuric acid pitch is to be incinerated, a large amount of strong acid gas such as sulfuric acid gas and sulfurous acid gas will be released into the atmosphere, resulting in air pollution and damage to the incineration equipment. In addition, since the incinerated ash contains a large amount of harmful heavy metals, contamination of water and soil becomes a serious problem if it is disposed of improperly.

 It is therefore an object of the present invention to minimize the adverse effects on workers, processing equipment and the surrounding environment, and to enable the disposal of waste such as sulfuric acid pitch at the lowest possible cost. Disclosure of the invention

 Prior to solving the above problems, the present inventor believes that if the sulfuric acid pitch contained in the drum can be processed while being kept in the drum, it would not affect the external environment including the workers. I got the knowledge to say. If so, it can be applied to the treatment of waste other than sulfuric acid pitch.

An object of the present invention is to provide a millimeter-wave irradiation head in which a millimeter-wave irradiation section is provided on one end of a rod made of heat-resistant glass such as quartz glass so as to irradiate the bar with millimeter waves. Is achieved by In addition, the above-mentioned problem is to provide a millimeter wave irradiating section so as to irradiate a millimeter wave toward the cylinder at one end side of a cylinder made of heat-resistant glass such as quartz glass, and This is achieved by providing a millimeter-wave irradiation head that is evacuated. The millimeter-irradiated head is used by inserting a rod or a tube into a container such as a drum.

 That is, when power is applied to the millimeter wave irradiator, the millimeter wave irradiator irradiates millimeter waves from the millimeter wave irradiator toward the rod or the vacuum cylinder, which is made of heat-resistant glass such as quartz glass. Therefore, the millimeter wave is radiated from the heat-resistant glass to the object to be processed in the drum as if it were a fluorescent light. Therefore, if the millimeter-wave irradiation head of the present invention is used, it is possible to perform processing such as gasification in a container such as a drum with the waste such as sulfuric acid pitch contained therein, that is, in the container such as a drum. It is. This effect is significant because it eliminates the need to perform dangerous work such as transferring waste such as sulfuric acid pitch to another treatment container, which is truly a breakthrough. In addition, the millimeter-wave irradiation head of the present invention can be portable or mounted on an automobile so that the waste can be treated at the site where the waste container is placed. Further, a recovery device for heavy metals and the like contained in gas as described later can be provided. The rod or vacuum cylinder can be provided not only in a perfectly linear shape but also in a curved shape as required.

By the way, microwave ovens at home use 2.4 gigahertz microwaves.The present inventor has confirmed that this is not suitable for performing high-efficiency heat treatment of waste. Instead, they concluded that the best results could be obtained by using millimeter waves, especially at frequencies around 38 gigahertz. As a millimeter wave oscillator One example is raising the gyratonic oscillator.

 As for quartz glass, high-purity quartz glass with a purity of 99.8 to 99.9% has been obtained at present, but the characteristics of this glass are extremely high light transmittance, It can be said that evaporated water adheres very little to the quartz glass wall. Therefore, high frequency attenuation and loss can be minimized, and waste gasification and volume reduction can be realized with high efficiency.

 Next, if the millimeter-wave irradiation head is provided with a mounting tool for mounting on the mouth of a container such as a drum can, the posture of the heat-resistant glass in the container can be stabilized. In addition, while irradiating the waste in the container with millimeter waves, the generated gas is sucked out from the other side of the container, and separated by a separate treatment device (for example, the harmful substances contained in the gas are converted into each element. It is a device that performs the process of separating and adsorbing). Therefore, the mounting tool may serve as a stopper that keeps the mouth of the mounting device airtight. In addition, when inserting the millimeter wave irradiation head into the container, it is recommended that the mounting device be used as a bush so that the cylinder does not break when hitting the container mouth. .

When the above-mentioned treatment is applied to the sulfuric acid pitch, harmful gas is taken out and residues such as harmful heavy metals remain on the bottom of the drum. In such a state, the drum can is heated and melted, and can be sent to a process to recover heavy metals such as sulfur, cadmium, and lead remaining with the iron resulting from the melting of the drum can. This application The person applied for the invention of the treatment apparatus at this stage, that is, "Waste treatment method and induction-heating type pyrolysis furnace J, filed on the same day.

 By the way, such a mounting device can be provided with a shape that can be checked by a robot hand. According to this method, since it is possible to automate the robot hand by using a robot hand without removing the millimeter-wave irradiation head from the mouth of the drum, the problem of touching the sulfuric acid pitch and smelling odors is particularly problematic. Will be resolved.

 In addition, such a mounting device may be provided with a temperature sensor. According to this, the temperature inside the drum during the millimeter wave irradiation process can be measured simply by attaching the millimeter wave irradiation head to the mouth of the drum.

 In addition, with respect to such a mounting tool, the mounting tool may be provided with a magnet for absorbing and fixing the mounting tool to a container such as a drum can. As described above, if the attachment is provided, it is possible to stabilize the posture of the heat-resistant glass in a container such as a drum. However, since the magnet is further provided, the magnet is made of metal such as a drum. It is possible to firmly support the millimeter-wave irradiation head by adsorbing it on the part.

 Next, the millimeter-wave irradiation head of the present invention may be provided with a sheath for accommodating the heat-resistant glass portion. Since the millimeter-wave irradiation head is a glass rod made of heat-resistant glass or a cylindrical body made of heat-resistant glass such as quartz glass whose inside is evacuated, make sure that the head is not inadvertently damaged. When not in use, the heat-resistant glass can be protected by storing it inside this sheath.

Next, with regard to the millimeter-wave irradiation head of the present invention, the heat-resistant glass portion It can be detachably attached to the part. Therefore, if it is damaged or old, it can be replaced with a new one. By preparing various kinds of heat resistant glass parts, they can be replaced as needed. For example, it is replaced with a heat-resistant glass part of a length corresponding to the volume and depth of a container such as a drum can.

 The above problem is solved by introducing the millimeter-wave irradiation head according to claim 1 into the container from one side of a container such as a drum can, and connecting the other side to an intake pump via an intake pipe. This is achieved by providing a waste treatment system comprising:

 Open the two container ports provided on a container such as a drum containing the object to be treated such as sulfuric acid pitch, attach a millimeter-wave irradiation head to one port, and an intake pipe to the other port. Connect. The millimeter-wave irradiation head is attached to the container opening such that the cylindrical portion is inserted into a container such as a drum. Then, power is applied to the millimeter wave irradiator and the suction pump is driven to start degassing. As a result, the processing object in the drum can is irradiated with millimeter waves, and the processing object is gasified and discharged from the intake pipe to reduce the volume. The discharged gasified material is sent to another processing device (this is a device that separates and adsorbs harmful substances contained in the gas into each element), and then the processing is performed by this processing device. Leave it to you.

 According to the waste treatment system of the present invention, it is possible to carry out treatment such as gasification while keeping waste in a container such as a drum can, so that there is no need to perform an operation such as transfer to another treatment container. .

This waste treatment system is equipped with a conveyor for transporting containers. In addition, a working robot for removing the millimeter-wave irradiation head and attaching / detaching the intake pipe can be provided toward the conveyor. When the container to be processed is transported on the conveyor and arrives in front of the work robot, the work robot inserts a millimeter-wave irradiation head into this container or attaches an intake pipe. When the gasification process is completed, the working robot extracts the millimeter-wave irradiation head from the container and removes the intake pipe. In addition, the work robot can be made to remove the lid of the container or to perform inspection after processing. Also, a plurality of work robots may be installed.

 According to the present invention, the following effects can be obtained. The millimeter-wave irradiation head according to the present invention is attached to a container such as a drum can while the waste remains therein, and the power is applied. As a result, it is not necessary to perform dangerous work such as transferring waste such as sulfuric acid pitch to another processing container, and it is possible to minimize the adverse effects on workers, processing equipment and the surrounding environment, and to reduce processing costs. Can be reduced. Brief Description of Drawings

 FIG. 1 is a schematic view of a millimeter-wave irradiation head according to a first embodiment of the present invention. FIG. 2 and FIG. 3 are explanatory diagrams of this use state.

 FIG. 4 is an explanatory diagram of the second embodiment.

 FIG. 5 is a schematic diagram of the third embodiment.

 FIG. 6 is a perspective view of a millimeter wave irradiation head according to a fourth embodiment.

FIG. 7 is a schematic view of a threaded portion of a glass rod according to a fifth embodiment. FIG. 8 is an explanatory view of a process in the sixth embodiment. FIG. 9 is an explanatory diagram of the same embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to only these embodiments. Here, the treatment of sulfuric acid pitch as waste is taken as a typical example, and the case where this is put in a drum as a container is described as a typical example.

 First embodiment

 1 to 3 show a first embodiment of the present invention. FIG. 1 shows a millimeter-wave irradiation head, in which a glass tube 2 made of quartz glass is attached in front of an output window 16 of a gyrotron oscillator 1 in a direction in which the millimeter wave is irradiated.

In FIG. 1, reference numeral 10 denotes an electron gun, reference numeral 11 denotes a gamma magnet coil, reference numeral 12 denotes a beam tunnel, reference numeral 13 denotes a cavity, reference numeral 14 denotes a main magnet coil, and reference numeral 1 denotes a main magnet coil. Reference numeral 5 denotes a beam collector, and reference numeral 16 denotes an output window. The frequency band from 30 gigahertz to 300 gigahertz is called a millimeter wave, but this gyroscope 1 uses a millimeter wave having a frequency near 38 gigahertz. Magnetrons are not suitable for oscillating around this frequency, and klystrons have low output. However, since the gyrotron oscillator was developed in the field of nuclear fusion, ample output can be obtained for gasification and volume reduction of waste. Therefore, the millimeter wave irradiator of the present invention Is optimal, but it goes without saying that other types of millimeter wave irradiators may be used. The gyrotron oscillator 1 used here generates a beam with the electron gun 10, interacts with the high-frequency electromagnetic field with the cavity 13 to generate an electromagnetic wave, and converts the electron beam after the interaction. The electromagnetic wave is collected by a beam collector 15 and the generated electromagnetic wave is extracted from an output window 16. Therefore, this electromagnetic wave is applied to the glass tube 2 made of quartz glass.

 The glass tube 2 is a cylindrical body having a hollow portion 21 in a core of a glass shell 20, and the hollow portion 21 is evacuated. The glass tube 2 is fixed to the front of the output window 16 with a support tube 23. That is, the support tube 23 is fixed to the output window 16 so that the output window 16 enters into a position corresponding to half of the length thereof, and the glass tube 2 is fixed and supported by the other half. A mounting lid 24 having a bush is attached to an outer peripheral portion of a portion of the support cylinder 23 covered with the window 16. A temperature sensor 3 for measuring the internal temperature of the drum 9 being heated is attached to the portion of the mounting lid 24 inserted from the mouth 90 of the drum 9, facing outward. A drip 22 which can be chucked by a robot hand is provided on the outer peripheral portion of the output window 16 behind the mounting lid 24 (FIG. 1).

As shown in Fig. 2, the millimeter-wave irradiation head configured as described above is inserted into the drum 9 from the opening 90 with the stopper removed with the glass tube 2 side first, and is inserted into the opening 90. It is mounted so as to cover the mounting lid 24. In FIG. 2, the symbol S is a sulfuric acid pitch into which the glass tube 2 is put. Therefore, the millimeter wave is a gyrotron oscillator. From the sulfuric acid pitch S via the glass tube 2.

 By the way, prior to irradiating the millimeter wave to the sulfuric acid pitch, the suction pipe 4 is attached to the other port 91 of the drum 9 by a mounting lid 40 provided at the end thereof. When the gyrotron oscillator 1 is turned on after such preparation, the entirety of the quartz glass glass tube 2 is irradiated onto the sulfuric acid pitch S in the drum 9, and the sulfuric acid pitch S is rapidly increased in temperature to be gasified. You. The gas and the like generated in this way are sucked out from the port 91 on the other side and sent out to another processing device. Thus, the volume of the waste is reduced, and a residue R remains at the bottom of the drum 9 (FIG. 3). Such a residue R may be processed by another processing apparatus, for example, by pulverizing it into a raw material for a concrete block or the like, or by performing processing such as separating and recovering each type of substance. .

 Therefore, if the millimeter-wave irradiation head of the first embodiment is used, the gasification treatment can be performed while the sulfuric acid pitch is put in the drum 9. This effect is so great that it is not necessary to transfer extremely harmful and dangerous sulfuric acid pitch to another treatment vessel. Further, if a robot is used, the grip 22 can be chucked by the robot hand to automatically attach or detach the grip 22 to / from the mouth 90. By adopting the same configuration as above, the work can be performed without directly touching the drum 9.

 Second embodiment

As shown in FIG. 4, the millimeter-wave irradiation head of this embodiment is the same as the first embodiment described above. It is characterized in that a sheath 5 is provided detachably on a glass tube 2 of a millimeter wave irradiation head in a state. The sheath 5 is made of iron and has a highly acid-resistant liner on the inner surface. The sheath 5 protects the glass tube 2.

 Third embodiment

 As shown in FIG. 5, the millimeter-wave irradiation head of this embodiment is characterized in that the millimeter-wave oscillator 1 and the glass tube 2 are separated and connected therebetween by a waveguide 17. Having. On the glass tube 2 side, there are provided a dalip 22 that can be chucked by a robot hand and a mounting lid 24 that fits into the mouth 90 of the drum 9. Because the millimeter-wave oscillator 1 is separate, it is lightweight and easy to handle by workers and robot hands.

 Fourth embodiment

 The feature of the millimeter-wave irradiation head of this embodiment is that, as shown in FIG. 6, a quartz glass rod 2 is placed in front of the output window of the gyrotron oscillator 1 (see the first embodiment described above). 5 is attached in the direction in which the millimeter wave is irradiated. The glass rod 25 is not a hollow body like the glass tube 2 of the first embodiment described above. The glass rod 25 is fixed to the front of the output window with a support cylinder 23. The millimeter waves are applied to the sulfuric acid pitch from the gyrotron oscillator 1 via the glass rod 25.

A mounting cover 24 having a bush is attached to an outer peripheral portion of a portion of the support cylinder 23 covered with the output window. Two arms 80 are provided from the upper end of the mounting lid 24 so as to extend the arms in the horizontal direction in the figure at an opening angle of 45 degrees. A magnet 8 having a yoke is attached to each of the magnets 8 such that the attraction surface of the magnet 8 faces downward. Each arm 80 is provided with a handle 81.

 The millimeter-wave irradiation head configured as described above is inserted into the drum with the glass rod 25 side first, and attached so as to cover the mounting lid 24 over the mouth of the drum. When the two arms 80 are positioned above the top of the drum, the respective arms 80 are attracted to the iron top of the drum by the magnet 8, so that the millimeter-wave irradiation head is firmly attached. It is supported. When removing the millimeter-wave irradiation head from the drum, the user operates the arm 80 by holding the handle 81 of the arm 80 and separating the arm 80 from the top plate of the drum.

 The handle 81 of the arm 80 may be a grip that can be chucked by a robot hand. Fifth embodiment

 As shown in FIG. 7, the millimeter-wave irradiation head of this embodiment is characterized in that the glass rod 25 can be detachably attached to the millimeter-wave oscillator 1. It has. This uses a socket 27 with a thread cut on the inner wall instead of the support cylinder 23 in the above-described first embodiment, and forms a threaded portion 26 at the upper end of the glass rod 25. With the threaded portion 26, the glass rod 25 is screwed and attached to the socket 27 as if it were a relationship between a light bulb and a socket.

Turning the glass rod 25 counterclockwise removes it from the socket 27, and vice versa. By turning it to the right, you can attach it to socket 27. Therefore, it is possible to replace the glass rod 25 with a required length or a required shape and performance, and this replacement work is also easy. Such a configuration can be similarly applied to the glass tube 2 described above.

 It should be noted that instead of using a socket 27 having a thread cut on the inner wall, a glass rod 25 was fixed by being pressed into the support cylinder, or provided at a position three times symmetrical to the peripheral wall of the support cylinder. It is also possible to design such that the glass rod 25 is fixed by pressing the glass rod 25 from the surroundings with screws. Sixth embodiment

Now, the sulfuric acid pitch processing system of this embodiment will be described with reference to FIGS. 8 and 9. FIG. This is a system to process sulfuric acid pitch by robotic work. When the drum containing the sulfuric acid pitch is carried into the millimeter wave irradiator 60 by the transport device 6, the robot removes the caulking stopper fitted to the mouths 90, 91 of the drum 9 by the robot hand. A millimeter wave irradiation head is attached to 0, and the above-mentioned intake pipe 4 is attached to the mouth 91. The intake pipe 4 is connected to the intake device 63. When the gyrotron oscillator 1 is turned on with the millimeter wave irradiation head mounted, the sulfuric acid pitch S in the drum 9 is heated intensely, gasified, and sucked out of the suction pipe 4. At the end of the treatment, a residue R remains at the bottom of the drum 9 as shown in FIG. In this state, the suction pipe 4 and the millimeter-wave irradiation head are removed from the drum 9 by a robot hand. It is sent to the next-stage induction heating device 62 by the transfer device 61. In the induction heating device 62, the robot puts a high-frequency induction coil on the drum 9 using a robot hand and energizes the same, and heats and melts the residue R together with the drum 9. This processing is an invention filed on the same day by the present applicant, and gasified in this process is sucked out through the intake pipe 4. Heavy metals such as sulfur, iron, lead, etc. remaining with the iron resulting from the melting of the drum 9 can be separately recovered and used. The gasified material sucked from the millimeter-wave irradiation device 60 and the induction heating device 62 by the suction device 63 is applied to a separation and recovery device 64 so as to be adsorbed and recovered for each element type.

 In this whole system, a portion formed by attaching a millimeter wave irradiation head to the mouth 90 of the drum 9 and attaching the suction pipe 4 to the mouth 91 and connecting to the suction pump is the sulfuric acid pitch of this embodiment. A processing system, which is represented in FIG. That is, the robot mechanism 7 has processing stages 70 from S1 to S8 set on a rotating plate 71, which is a conveyor, and S2 to S6 and S8 have auxiliary work. An auxiliary robot 72 is provided.

The millimeter wave irradiation head of the present invention is provided in S2, and the intake pipe 4 is provided in S3. In S1, the drum 9 containing sulfuric acid pitch supplied from the supply line is placed on the turntable 7 1 and sent to S2.In S2, the caulking stopper is removed from the mouth 90 of the drum 9 and millimeter wave irradiation is performed. Attach the head tightly. In the next step S3, the rim is removed from the mouth 91 of the drum 9 and the intake pipe 4 is attached in an airtight manner. In S4, it is checked whether these attachments are secure. In the next stage, S5, power was applied to the millimeter-wave irradiation head to reduce the sulfuric acid pitch. Start gasification. At the next stage S6, degassing from the intake pipe 4 is started. After finishing the processing in the last S7 and confirming the result, the drum 9 is carried out to the next stage. S8 is an idler stage.

 This sulfuric acid pitch processing system is extremely effective, and it is possible to perform gasification and other processing while the sulfuric acid pitch is contained in the drum 9, so it is necessary to perform dangerous work such as transferring to another processing container. Absent. Industrial applicability

 The millimeter-wave irradiation head and the waste treatment system of the present invention can be used not only for the treatment of the sulfuric acid pitch but also for the gasification treatment and the combustion treatment of various applicable wastes. The cross-sectional shape of the heat-resistant glass portion is not limited to a circle. In addition, at the same time as the gasification treatment by the millimeter wave irradiation head, an induction heating coil is arranged around a container such as a drum and the drum and the drum can be heated from the outside by the induced current generated in the drum. However, it is possible to reduce the time required for processing.

Claims

Scope of Claim A millimeter-wave irradiation head in which a millimeter-wave irradiation unit is provided at one end of a rod made of heat-resistant glass such as quartz glass so as to irradiate the bar with millimeter waves. A millimeter wave irradiator is provided at one end of a tube made of heat-resistant glass such as quartz glass so as to irradiate the tube with millimeter waves, and the inside of the tube is evacuated. De. 3. The millimeter-wave irradiation head according to claim 1 or 2, further comprising a mounting tool for mounting on a mouth of a container such as a drum can. 4. The millimeter-wave irradiation head according to claim 3, wherein the mounting tool has a shape capable of being checked by a robot hand. The millimeter-wave irradiation head according to claim 3, wherein the mounting device includes a temperature sensor. 4. The millimeter wave irradiation head according to claim 3, wherein the mounting device includes a magnet for attracting and fixing the mounting device to a container such as a drum. one The millimeter-wave irradiation head according to claim 1 or 2, further comprising a sheath for housing the heat-resistant glass portion. The millimeter-wave irradiation head according to claim 1 or 2, wherein the heat-resistant glass portion is detachably attached to the millimeter-wave irradiation unit. The millimeter-wave irradiation head according to claim 1 or claim 2 is inserted into the container from one side of a container such as a drum can, and the other side is connected to a suction pump via a suction pipe. Waste treatment system. 10. The disposal according to claim 9, comprising a conveyor for transporting the containers, and a working robot for attaching and detaching the millimeter wave irradiation head and attaching and detaching the suction pipe facing the conveyor. Object processing system.