JPWO2005019727A1 - Tire and other waste treatment system, method for the same, and tire and other waste treatment furnace - Google Patents

Abstract

The present invention provides a processing system for wastes such as tires that can continuously process waste tires and the like and can accurately remove toxic substances such as dioxins generated from exhaust gas. Is an issue. A waste processing system according to the present invention is characterized by a plurality of processing furnaces 100 for containing waste in a sealed state so as to generate dry distillation gas from the waste, and the dry distillation gas generated in the processing furnace 100 A gas combustion section that uses the energy burned, and a dry distillation gas flow path that feeds dry distillation gas from the processing furnace 100 to the gas combustion section, and the processing furnace 100 discharges exhaust gas in the furnace A path 320 is provided, and the exhaust path 320 is provided so that the exhaust gas passes through a region where the exhaust gas is maintained at a certain temperature or higher by the gas combustion unit. 311 and 321 are provided. [Selection] Figure 1

Description

  The present invention relates to a waste treatment system, a treatment method thereof, and a waste treatment furnace, and more particularly, is an invention suitable for treatment of waste tires.

  In collecting dry distillation gas from waste tires, in general, waste tires are made into chips, the chip-like waste tires are dry-distilled in a dry distillation furnace to obtain dry distillation gas, and waste tires after dry distillation The ash is made into ash by another processing means.

  In such a processing method, it is necessary to chip the tire, and it is necessary to process the waste tire after obtaining the carbonization gas by a processing means different from the carbonization furnace, which is very complicated. It was.

  In addition, there has been a problem in that the carbonization gas cannot be generated and the carbonization gas cannot be continuously used until the waste tire is removed from the furnace after the carbonization.

In addition, with respect to the carbonization treatment of waste tires, there are known ones provided with a pair of carbonization furnaces and boilers (Patent Document 1). However, harmful exhaust gas such as dioxin is generated in the treatment of waste tires. However, in Patent Document 1, no such consideration is made.
JP-A-8-94043

  Accordingly, in view of the above problems, the present invention can treat waste tires and the like continuously, and can also treat wastes such as tires that can accurately remove toxic substances such as dioxins generated from exhaust gas. The problem is to provide a system.

  The present invention has been made to solve the above-mentioned problems, and the feature of the present invention as a waste treatment system for tires and the like is that the waste is sealed in order to generate dry distillation gas from the waste such as tires. A plurality of processing furnaces, a gas combustion section that uses energy obtained by burning dry distillation gas generated in the processing furnace, and a dry distillation gas flow path for supplying dry distillation gas from the processing furnace to the gas combustion section. The treatment furnace is provided with a discharge path for discharging exhaust gas in the furnace, and the discharge path passes through a region where the exhaust gas is maintained at a certain temperature or higher by the gas combustion unit. An open / close valve is provided in the dry distillation gas flow path and the discharge path.

  In the processing system according to the present invention having the above-described configuration, dry distillation gas is generated by one processing furnace, the dry distillation gas is introduced from the dry distillation gas flow path to the gas combustion section, and burned. For example, it can be used for a blast furnace. And after generation | occurrence | production of dry distillation gas in said one processing furnace, it can start dry distillation in another processing furnace, can supply dry distillation gas to a gas combustion part, and uses dry distillation gas continuously as a heat source. Can do. In addition, after the generation of the dry distillation gas as described above, the exhaust gas generated in the processing furnace is kept at a certain temperature or higher by the gas combustion section by closing the dry distillation gas flow path of one processing furnace and opening the discharge path. The dioxins in the exhaust gas can be removed by passing through the region. Further, in one furnace, waste can be brought to ashing after dry distillation, and there is no need to transfer waste after dry distillation to other treatment means as before.

  In the processing system according to the present invention, it is preferable that the on-off valve is provided close to the inside of the processing furnace as described in claim 2.

  By adopting this configuration, temperature control in the furnace can be easily performed. Further, in the case of processing a tire, it is possible to prevent an adverse effect that a pitch of tar or the like that solidifies evaporated oil sticks to the flow path. Note that “close to the furnace” means that an open / close valve is provided in the processing furnace, or an open / close valve is provided in the vicinity of the processing furnace of a pipe line connected to the processing furnace.

  In addition, the processing system according to the present invention is provided with dry distillation air supply means for supplying air to the processing furnace as described in claim 3, and air supplied during dry distillation by the dry distillation air supply means. The amount is preferably controlled by the control means.

  In the treatment system adopting the above-described configuration, the dry distillation of the waste in the furnace can be controlled by adjusting the amount of air by the control means, and a desired dry distillation gas is generated at a desired time. be able to. Here, the control means, for example, adjusting the amount of air according to the temperature in the furnace. More specifically, for example, if the inside of the furnace is below a predetermined temperature, a constant amount of air is supplied, If so, it is possible to stop the air supply, and to perform a process of restarting the air supply when the temperature is lower than the predetermined temperature. Further, for example, the air supply amount can be adjusted according to the start time from the start of dry distillation.

  Further, in the processing system according to the present invention, an upper supply port for supplying air to the processing furnace is provided at an upper portion of the processing furnace, as defined in claim 4. The air supply is preferably controlled by control means.

  In the treatment system adopting the above-described configuration, air can be supplied from the upper supply port after dry distillation, and an accurate amount of air can be supplied for ashing waste. In particular, even when the upper supply port is closed during dry distillation and the upper supply port is clogged with oil or the like, the oil is easily removed by the supplied air pressure because it is provided at the upper part.

  Further, in the treatment system according to the present invention, as described in claim 5, the exhaust gas discharged from the discharge passage passes through a region maintained at a certain temperature or higher by the gas combustion unit and is cooled on the downstream side thereof. It is preferable to be provided.

  According to the treatment system having the above configuration, dioxins can be more reliably removed by cooling the exhaust gas after passing through a region of a certain temperature or higher.

  Moreover, it is preferable that the processing system according to the present invention has suction means for sucking the air in the gas combustion section downstream from the gas combustion section as described in claim 6.

  According to the processing system having the above-described configuration, the gas combustion unit can be set to a negative pressure by the suction means as compared with the processing furnace. For this reason, backfire from the gas combustion unit to the processing furnace (fire of the gas combustion unit is Backflow to the processing furnace) can be prevented in advance.

  In addition, a feature of the processing method according to the present invention is a method of processing waste such as tires in a processing furnace. In the processing furnace, waste is generated in a sealed state to generate dry distillation gas and generated in the processing furnace. The carbonization gas is combusted in the gas combustion section through the carbonization gas flow path to use energy, and after a certain period of time, the dry distillation gas flow path of the processing furnace is closed to open the exhaust path, and the exhaust gas is burned to the gas And passing a region maintained at a certain temperature or higher by a section, generating a dry distillation gas in a sealed state in another processing furnace, and generating the dry distillation gas generated in the other processing furnace via a dry distillation gas channel The point is to use energy by burning in the gas combustion section.

  In the processing method according to the present invention having the above-described configuration, dry distillation gas is generated by a single processing furnace, the dry distillation gas is introduced from the dry distillation gas flow path to the gas combustion section and burned, and by the combustion heat For example, it can be used for a blast furnace. And after generation | occurrence | production of dry distillation gas in said one processing furnace, in order to start dry distillation in another processing furnace and to supply dry distillation gas to a gas combustion part, dry distillation gas can be utilized continuously as a heat source. . In addition, after the generation of dry distillation gas as described above, the dry distillation gas flow path of one processing furnace is closed to open the discharge path, and the exhaust gas generated in the processing furnace is held at a certain temperature or higher by the gas combustion unit. The dioxin in the exhaust gas can be removed by passing through the region. Further, in one furnace, waste can be brought to ashing after dry distillation, and there is no need to transfer waste after dry distillation to other treatment means as before.

  Moreover, it is preferable that the processing method according to the present invention employs a configuration in which the amount of air supplied to the processing furnace at the time of dry distillation is controlled by control means.

  In the processing method having the above-described configuration, by controlling the amount of air by the control means, it is possible to control the carbonization of waste in the furnace, and to generate a desired carbonization gas at a desired time. Can do. Here, the control means, for example, adjusting the amount of air according to the temperature in the furnace. More specifically, for example, if the inside of the furnace is below a predetermined temperature, a constant amount of air is supplied, If so, it is possible to stop the air supply, and to perform a process of restarting the air supply when the temperature is lower than the predetermined temperature. Further, for example, the air supply amount can be adjusted according to the start time from the start of dry distillation.

  Further, in the treatment method according to the present invention, it is preferable to supply air from an upper supply port provided at an upper portion of the treatment furnace after dry distillation, as described in claim 9.

  According to the treatment method adopting the above configuration, air can be supplied from the upper supply port after dry distillation, and an appropriate amount of air can be supplied for ashing waste. In particular, even when the upper supply port is closed during dry distillation and the upper supply port is clogged with oil or the like, the oil is easily removed by the supplied air pressure because it is provided at the upper part.

  Further, according to the treatment method of the present invention, as described in claim 10, the exhaust gas discharged from the discharge passage is allowed to pass through a region maintained at a certain temperature or higher by the gas combustion section, and cooled downstream thereof. It is preferable to do.

  According to the treatment method having the above configuration, dioxins can be more reliably removed by cooling the exhaust gas after passing through a region of a certain temperature or higher.

  In the processing method according to the present invention, it is preferable that the air in the gas combustion section is sucked by suction means from the downstream side of the gas combustion section.

  According to the processing method having the above-described configuration, the gas combustion unit can be made to have a negative pressure than the processing furnace by the suction means, and therefore, backfire from the gas combustion unit to the processing furnace can be prevented in advance. it can.

  In addition, a feature of the processing furnace according to the present invention is a processing furnace for waste such as tires that generates dry distillation gas from waste such as tires, and a dry distillation gas outlet for supplying dry distillation gas, And an opening / closing valve for opening and closing the flow path of the dry distillation gas delivery port and the discharge port.

  In the processing furnace according to the present invention having the above-described configuration, a dry distillation gas is generated, and the dry distillation gas is sent out from a dry distillation gas outlet, for example, introduced into a gas combustion section and burned, and by the combustion heat For example, it can be used for a blast furnace. In addition, after generation of dry distillation gas as described above, the open / close valve of the dry distillation gas delivery port of the processing furnace is closed and the open / close valve of the discharge port is opened, and the exhaust gas generated in the processing furnace is made constant by, for example, the gas combustion section. Dioxins in the exhaust gas can be removed by passing through a region maintained above the temperature. Further, in one furnace, waste can be brought to ashing after dry distillation, and there is no need to transfer waste after dry distillation to other treatment means as before. In addition, since the on-off valve is provided in the processing furnace itself, temperature control and the like in the furnace can be easily performed, and the adverse effect that the pitch of tar or the like that solidifies the evaporated oil is stuck in the flow path can be prevented. . In addition, by connecting the processing furnace to a plurality of gas combustion sections, after the generation of the dry distillation gas in one processing furnace, start the dry distillation in another processing furnace, and supply the dry distillation gas to the gas combustion section The carbonized gas can be continuously used as a heat source.

  In addition, the treatment furnace according to the present invention is provided with dry distillation air supply means for supplying air into the furnace as described in claim 13, and the amount of air supplied during dry distillation by the dry distillation air supply means. Is preferably controlled by the control means.

  In the processing furnace having the above-described configuration, by controlling the amount of air by the control means, it is possible to control the dry distillation of waste in the furnace, and to generate a desired dry distillation gas at a desired time. Can do. Here, the control means, for example, adjusting the amount of air according to the temperature in the furnace. More specifically, for example, if the inside of the furnace is below a predetermined temperature, a constant amount of air is supplied, If so, it is possible to stop the air supply, and to perform a process of restarting the air supply when the temperature is lower than the predetermined temperature.

  Further, in the processing furnace according to the present invention, as described in claim 14, an upper supply port for supplying air is provided in an upper portion of the furnace, and air supply from the upper supply port is: It is preferably controlled by control means.

  According to the processing furnace employing the above configuration, air can be supplied from the upper supply port after dry distillation, and an appropriate amount of air can be supplied for ashing waste. In particular, even when the upper supply port is closed during dry distillation and the upper supply port is clogged with oil or the like, the oil is easily removed by the supplied air pressure because it is provided at the upper part.

  The processing furnace according to the present invention has an opening for carrying waste into the furnace and a lid for closing the opening, as defined in claim 15. It is preferably provided so as to be slidable with respect to the furnace body and to be pressed against the furnace body by the clamping means.

  According to the processing furnace having the above configuration, waste can be carried in and out from the opening, and the inside of the furnace can be sealed by closing the lid. In particular, since the lid body is provided so as to slide with respect to the furnace body and press against the furnace body side by the clamping means, the lid body can be more reliably compared with those provided to be rotatable with a hinge. The inside of the furnace can be sealed.

  As described above, according to the processing system of the present invention, after the generation of dry distillation gas in one processing furnace, it is possible to start dry distillation in another processing furnace and supply the dry distillation gas to the gas combustion section, Continuously, the carbonized gas can be used as a heat source. In addition, after the generation of the dry distillation gas as described above, the exhaust gas generated in the processing furnace is kept at a certain temperature or higher by the gas combustion section by closing the dry distillation gas flow path of one processing furnace and opening the discharge path. The dioxins in the exhaust gas can be removed by passing through the region. Further, in one furnace, waste can be brought to ashing after dry distillation, and there is no need to transfer waste after dry distillation to other treatment means as before.

It is a flowchart for showing the whole structure of the processing system of the waste tire which concerns on embodiment of this invention. It is a schematic plan view of the processing furnace and melting furnace of the system of the same embodiment. It is a side view of the processing furnace and melting furnace of the embodiment. It is a schematic plan view of the processing furnace of the system of the embodiment. It is an AA line end view of FIG. It is a schematic sectional side view of the processing furnace of the system of the embodiment. It is a schematic back view of the processing furnace of the system of the embodiment. It is a principal part enlarged plan view of the processing furnace of the system of the embodiment.

Explanation of symbols

T tire 100 processing furnace 101 frame 102 refractory 103 iron plate 104 support fitting 105 explosion safety hole 110 dry distillation gas outlet 120 outlet 140 opening 140 lower supply port 141 lower pipe 150 upper supply port 151 upper pipe 152 air supply line 152a main pipe 152b trunk pipe 152c branch pipe 160 air blower 200 blast furnace 201 opening / closing door 202 air blower 210 melting chamber 211 dry distillation gas burner 212 ignition burner 213 control burner 220 holding chamber 221 molten aluminum discharge port 222 control burner 223 auxiliary burner 230 exhaust gas discharge port 310 dry distillation gas feed Path 311 On-off valve 320 Discharge path 321 On-off valve 400 Lid 401 Frame 402 Refractory 403 Hanging metal fitting 404 Protrusion 410 Electric motor 411 Sprocket 415 Rotating roller 416 Sprocket 18 Chain 420 clamping means 421 support bracket 430 wire 440 poster member 441 guide rail 450 connecting frame 460 reinforced frame 470 counterweight 500 cooling tower 600 bag filter 700 sulfur removal unit 800 blower

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a flowchart for showing the overall configuration of a waste tire processing system according to an embodiment of the present invention. FIG. 2 is a schematic plan view of a processing furnace and a melting furnace of the system according to the embodiment. FIG. 3 is a side view of the processing furnace and melting furnace of the same embodiment (however, illustration of the exhaust gas discharge port of the blast furnace is omitted). 4 to 8 are explanatory views of the processing furnace of the system of the embodiment, FIG. 4 is a schematic plan view, FIG. 5 is an end view taken along line AA of FIG. 4, and FIG. 7 is a schematic rear view, and FIG. 8 is an enlarged plan view of a main part.

  First, the overall configuration of the processing system of the present embodiment will be described. As shown in FIG. 1, the present system includes a plurality of waste tires T that are sealed in order to generate dry distillation gas from the waste tire T (this embodiment). 2) two processing furnaces 100, a blast furnace 200 (gas combustion section) that melts aluminum using the energy obtained by burning dry distillation gas generated in the processing furnace 100, and a blast furnace provided downstream of the blast furnace 200 A cooling tower 500 that cools the exhaust gas discharged from 200, a bag filter 600 that is provided on the downstream side of the cooling tower 500 for removing dust from the exhaust gas discharged from the cooling tower 500, and a downstream side of the bag filter 600 And a sulfur removal device 700 that removes sulfur compounds from the exhaust gas discharged from the bag filter 600 and releases them to the atmosphere.

  The sulfur removal device 700 is provided to remove sulfur processed material components in the gas by bringing the gas discharged from the bag filter 600 into contact with water and to release the sulfur processed product component from the discharge port to the atmosphere. The bag filter 600 has a filter that removes dust and the like from the gas cooled by the cooling tower 500. Here, in the gas flow path connecting the sulfur removing device 700 and the bag filter 600, a blower 800 is provided on the downstream side to suck exhaust gas (so that the bag filter 600 side has a negative pressure).

  The cooling tower 500 is provided to cool the exhaust gas by introducing the exhaust gas discharged from the blast furnace 200 into the tower and injecting cold water into the tower. In the present embodiment, the exhaust gas of about 850 degrees discharged from the blast furnace 200 is provided to be rapidly cooled to about 200 degrees by the cooling tower 500.

  The blast furnace 200 includes a melting chamber 210 for melting aluminum and a holding chamber 220 for holding the aluminum melted by the melting chamber 210.

  The holding chamber 220 is provided with a molten aluminum discharge port 221 for discharging molten aluminum to the outside, and a burner 222 for maintaining the temperature in the holding chamber 220 at a certain level (850 degrees or more). 223 is provided. Here, two burners 222 and 223 are provided. The burner 222 includes a control burner 222 that is mainly used and an auxiliary burner 223 that is used as an auxiliary. Both of the control burner 222 and the auxiliary burner 223 are heavy oil burners. It is composed of

  Further, the melting chamber 210 has a dry distillation gas burner 211 for combusting the dry distillation gas from each processing furnace 100, and two dry distillation gas burners 211 are provided corresponding to the number of the processing furnaces 100. ing. Furthermore, the melting chamber 210 is provided with an ignition burner 212 for igniting the dry distillation gas burner 211, and a control burner 213 for keeping the temperature in the melting chamber 210 at a certain level (1000 degrees or more). Both the ignition burner 212 and the control burner 213 are composed of a heavy oil burner.

  In addition, 201 in the figure has shown the opening / closing door of the blast furnace 200. FIG. Reference numeral 202 denotes an air blower for supplying air to each burner 211.

  The blast furnace 200 and the processing furnace 100 include a dry distillation gas supply path 310 that supplies the dry distillation gas generated in the processing furnace 100 to the blast furnace 200, and exhaust gas generated when the waste tire T is processed in the processing furnace 100 after dry distillation. They are connected by a discharge path 320 that supplies the blast furnace 200. The tip of the carbonization gas supply path 310 is connected to the carbonization gas burner 211, and the carbonization gas burns in the carbonization gas burner 211. Note that two carbonization gas supply paths 310 and discharge paths 320 are provided corresponding to the number of the processing furnaces 100 (in FIG. 1, the two discharge paths 320 are joined together and illustrated. However, each discharge path 320 is connected to the melting chamber 220 as shown in FIG.

  The dry distillation gas supply path 310 and the discharge path 320 are each provided with on-off valves 311 and 321. The on / off valves 311 and 321 are controlled to be opened and closed by a control means (not shown). More specifically, the open / close valves 311 and 321 of the open / close valve 311 of the dry distillation gas supply path 310 are opened and the open / close valve 321 of the discharge path 320 is closed while dry distillation gas is generated. Is controlled such that the on-off valve 311 of the dry distillation gas supply passage 310 is closed and the on-off valve 321 of the discharge passage 320 is opened.

  Further, the blast furnace 200 has an exhaust gas discharge port 230 for discharging the gas in the furnace to the downstream side. Here, as shown in FIG. 2, the blast furnace 200 is formed in the upper part of the holding chamber 220.

  Further, the discharge path 320 for supplying the exhaust gas from the processing furnace 100 to the blast furnace 200 is connected to the blast furnace 200 so as to pass through the blast furnace 200 for a predetermined time (2 seconds) or more. In the present embodiment, the discharge path 320 is connected to the upper part of the holding chamber 220 of the blast furnace 200 having a certain distance from the exhaust gas outlet 230 of the holding chamber 220 as shown in FIGS. More specifically, as shown in FIG. 2, the connection ports between the two discharge paths 320 and the holding chamber 220 are arranged so that the distance from the exhaust gas discharge port 230 of the holding chamber 220 is the same in plan view. The exhaust gas supplied into the blast furnace 200 from each discharge path 320 is provided so as to be discharged from the exhaust gas outlet 230 of the blast furnace 200 after passing through the same time.

Next, the configuration of the processing furnace 100 will be described.
The processing furnace 100 of the present embodiment is for carbonizing the waste tire T in the furnace, and then reaching ashing (hereinafter, the process leading to ashing after carbonization may be referred to as “fire”). . As shown in FIGS. 5 and 6, the processing furnace 100 includes a furnace body that includes a frame 101 and a refractory 102 supported by the frame 101, and the inside of the furnace is surrounded by a refractory 102 such as a brick. It is surrounded by.

  The refractory 102 is supported by a frame 101 around the refractory 102. In particular, the refractory constituting the upper wall is substantially Y-shaped provided on an iron plate 103 fixed to the frame 101 as shown in FIG. The support metal fitting 104 is used. Such a configuration can be obtained by laminating and solidifying a clay-like refractory on the iron plate 103 after welding the support fitting 104 to the iron plate 103.

Further, as shown in FIG. 6, the processing furnace 100 includes a dry distillation gas outlet 110 for supplying a dry distillation gas obtained from the waste tire T to the blast furnace 200 as described above, and a waste tire T after dry distillation. The exhaust port 120 for discharging the exhaust gas generated from the blast furnace 200 to the holding chamber 220 of the blast furnace 200 is provided. That is, the dry distillation gas delivery port 110 and the discharge port 120 constitute a part of the aforementioned dry distillation gas delivery route 310 and the delivery route 320, respectively.
Further, the processing furnace 100 is provided with the open / close valves 311 and 321 controlled by the control means as described above at the dry distillation gas delivery port 110 and the discharge port 120, respectively (in FIG. 6, in the dry distillation gas delivery port). The illustration of the on-off valve 311 on the outlet 110 side is omitted). In the present embodiment, the dry distillation gas outlet 110 is formed on one side wall of the processing furnace 100 (a side wall facing an opening 130 described later), and the discharge port 120 is the upper wall of the processing furnace 100. Is formed.

  The processing furnace 100 is provided with air supply means 140 and 150 for supplying air into the furnace, and the amount of air supplied by the air supply means 140 and 150 is controlled by a control means (not shown). ing. Moreover, the processing furnace 100 has a plurality of types of air supply means 140 and 150, and specifically, a plurality of lower supply ports 140 (air supply means for dry distillation) that supply air from the lower side in the furnace. And a plurality of upper supply ports 150 (fire-fired air supply means) for supplying air from the upper side in the furnace.

  The processing furnace 100 is provided with temperature detection means (not shown) for measuring the temperature in the furnace, and the control means controls the amount of air supplied by the air supply means 140 and 150 depending on the temperature of the temperature detection means. It is adjusted.

  The upper supply port 150 is provided on the upper wall of the processing furnace 100. As shown in FIGS. 5 and 6, the upper supply port 150 is one end of an upper pipe 151 that penetrates the refractory 102 and the iron plate 103. The other end of the upper pipe 151 is connected to the air supply pipe line 152. As shown in FIG. 4, the air supply pipe line 152 is connected to an air blower 160 and branched into two main pipes 152a, a main pipe 152b branched into three from the main pipe 152a, and the main pipe 152b. The branch pipe 152c is branched and connected to the upper pipe 151. The main pipe 152a is provided with an open / close valve (not shown) whose opening and closing is controlled by a control means (not shown). The open / close valve is closed during dry distillation and is controlled to open during a fire. ing.

  5 and 6, the lower supply port 140 is formed below the side wall of the processing furnace 100, and the lower supply port 140 is a lower part that penetrates the refractory 102 constituting the side wall. One end of the pipe 141 is configured to be exposed in the furnace. The lower pipe 141 is connected to a lower air supply pipe (not shown), and the air supply pipe is connected to the air blower 160. The air blower 160 has its air supply amount controlled by control means. The lower air supply pipe is also provided with an on-off valve (not shown), and when the temperature in the furnace exceeds a certain temperature, the control means is closed. Is controlled by.

  In addition, an explosion safety hole 105 closed by a lid is formed on the upper wall of the processing furnace 100. Further, the processing furnace 100 is provided with an ignition burner 106 for raising the waste tire T to a temperature at which dry distillation can be performed. As the ignition burner 106, a natural gas burner is preferably used. Further, the ignition burner 106 is supplied with air by an air blower 202 that supplies air to the burners 211 of the blast furnace 200. Further, reference numeral 107 in FIG. 1 denotes a nitrogen gas supply device for supplying nitrogen gas into the furnace in an emergency.

  Further, as shown in FIG. 6, the processing furnace 100 is provided with an opening 130 on one side for carrying the waste tire T into the furnace, and has a lid 400 for closing the opening 130. ing. As shown in FIGS. 6 to 8, the lid 400 is provided so as to move up and down by the vertical movement means 410, and is pressed against the furnace main body side by the clamp means 420 when moved to the lower side. Is provided. Here, the clamp means 420 is supported by a clamp support fitting 421 fixed to the frame 101 of the furnace body.

  In addition, the lid 400 includes a frame 401 provided in a lattice shape and a refractory 402 attached to the frame 401. When the frame 401 is pressed by the clamp means 420, It is provided so that the inside of the furnace can be sealed.

  Further, as shown in FIGS. 6 and 7, a hanging metal fitting 403 to which a wire 430 is attached is fixed to the lid body 400 at two upper portions thereof, and is provided so as to be lifted upward by the wire 430. ing.

  Further, a column member 440 is fixed to the frame 101 of the furnace body, and an electric motor 410 is attached to the upper portion of the column member 440 as the vertical movement means for lifting the lid 400 upward. More specifically, a pair of column members 440 are fixed to the frame 101 of the furnace body, and a connection frame 450 is fixed to an upper part of the pair of column members 440. It is fixed to the other end of the reinforcing frame 460 whose one end is fixed to the frame 101.

  Further, as shown in FIGS. 7 and 8, the electric motor 410 and a rotating roller 415 rotated by the electric motor 410 are fixed to the connection frame 450 in a pair of left and right. The pair of left and right rotating rollers 415 are respectively provided in the front and rear, and are rotatably supported by a roller support attached to the connection frame 450. Here, the sprocket 411 is attached to the output shaft of the electric motor 410, and the sprocket 416 is also attached to the shaft of the rotating roller 415. The chain 418 is wound around the sprockets 411 and 416, and the rotational force is transmitted. Is provided. Further, the wire 430 is hooked on the outer periphery of the rotating roller 415, and the lid body 400 is provided to move up and down by the rotation of the rotating roller 415. Further, a counterweight 470 (not shown in FIG. 8) is attached to the other end of the wire 430, and is balanced with the lid 400.

  Further, the lid 400 is provided with protrusions 404 made of rollers on both sides, and the pillar member 440 is provided with a guide rail 441 with which the protrusions 404 can be engaged as shown in FIG. When the lid 400 is raised, the projection 404 is engaged with the guide rail 441 so that the lid 400 can be raised in a stable state. Further, the guide rail 441 is provided at a position where the engagement with the projection 404 is released when the lid 400 is located at the lowest position (when the lid 400 is located at the closed position of the opening 130). When the lid 400 is positioned at the lowermost position, it is provided so as to be pressed against the furnace body by the clamping means 420.

  Next, a waste tire processing method using the above processing system will be described below.

  First, in one processing furnace 100, the lid 400 is raised and the waste tire T is carried into the furnace through the opening 130. At the time of carrying in, a large number of waste tires T are carried in as they are (without being crushed) from the opening 130 by, for example, a forklift.

  After the waste tire T is carried into the furnace, the lid 400 is lowered and the lid 400 is pressed against the furnace main body by the clamp means 420 to seal the inside of the furnace. When the lid 400 is moved up and down, the lid 400 is guided by the guide means 441, so that the lid 400 can be moved up and down accurately.

  After the inside of the furnace is sealed by the lid 400 as described above, air is supplied from the lower supply port 140 while the temperature is raised by the ignition burner 106. The amount of air at the start of the supply is supplied at a theoretical air amount of 3 to 4 (the amount of air required for complete combustion is 10) necessary to incinerate the stored tire.

  When the inside of the processing furnace 100 reaches a constant temperature (about 250 ° C.), dry distillation of the waste tire T is started. Thus, when the temperature inside the furnace reaches a certain level or more, the lower supply port 140 The amount of air supplied is controlled to a theoretical air amount of about 0.2 to 0.3. Note that the ignition burner 106 is in an OFF state after the inside of the furnace reaches a certain temperature or higher. Further, the upper supply port 150 is closed at the start of the dry distillation (no air is supplied).

  When the inside of the furnace reaches a certain temperature (for example, 500 degrees) or more during dry distillation, the control means controls the air supply from the lower supply port 140. Specifically, when the temperature has become equal to or higher than a certain temperature, the air supply from the lower supply port 140 is once stopped, and then the planned air amount (theoretical air amount 0.2 to 0.3) is exceeded. When a small amount of air is supplied and the temperature falls below a certain temperature (for example, 500 degrees), the normal operation (air supply with a theoretical air amount of 0.2 to 0.3) is resumed. Further, when the inside of the furnace becomes a certain temperature (for example, 250 degrees) or less, the control means supplies more air than the normal operation for supplying air from the lower supply port 140 to a certain temperature (for example, 250 degrees). When it becomes above, the said normal driving | operation (the air supply of theoretical air amount 0.2-0.3) is restarted. Note that the air blower 160 may be provided so as to adjust the air supply amount according to time. As described above, by adjusting the supplied air, the speed of dry distillation of the waste tire T and the amount of dry distillation gas can be adjusted accurately.

  As described above, when dry distillation gas is generated from the waste tire T, the open / close valve 311 of the dry distillation gas supply path 310 is opened and the open / close valve 322 of the discharge path 320 is closed. As a result, the generated carbonization gas is supplied to the carbonization gas burner 211 of the blast furnace 200 via the carbonization gas supply path 310. And in this dry distillation gas burner 211, dry distillation gas is combusted and the temperature rise of the melting chamber 210 of the blast furnace 200 can be aimed at. When the temperature of the melting chamber 210 of the blast furnace 200 becomes below a certain level, the control burner 213 is ignited to keep the temperature of the melting chamber 210 above a certain temperature (for example, 1000 degrees). Further, the holding chamber 220 is also maintained at a certain temperature (for example, 850 degrees) or more by the control burner 222 and the auxiliary burner 223.

  Further, as described above, during the dry distillation gas combustion by the dry distillation gas burner 211, the blower 800 provided on the downstream side is turned on. Thereby, since the blast furnace 200 becomes a negative pressure rather than the processing furnace 100, the backfire from the blast furnace 200 to the processing furnace 100 can be prevented.

  The aluminum melted as described above is taken out from the molten aluminum discharge port 221 through the holding chamber 220.

  Further, after a certain period of time has elapsed since the start of the carbonization (for example, after 12 hours), the on-off valve 311 of the dry-distillation gas supply path 310 of the processing furnace 100 is closed and the on-off valve 322 of the discharge path 320 is opened. In the other processing furnace 100, the waste tire T is carried into the furnace, and dry distillation is started. That is, after the dry distillation in one processing furnace 100 is completed, the dry distillation in the other processing furnace 100 is started. For this reason, combustion of the dry distillation gas in a melting furnace can be performed continuously.

  In the processing furnace 100 in which the open / close valve 311 of the dry distillation gas supply path 310 is closed and the open / close valve 322 of the discharge path 320 is opened as described above (in the processing furnace 100 after dry distillation is completed), only the lower supply port 140 is used. Instead, the air supply from the upper supply port 150 is started. Thereby, the amount of air necessary for ashing can be supplied, and the waste tire T after dry distillation can be completely ashed. Even if the upper supply port 150 is closed by oil or the like during dry distillation, the oil or the like can be easily removed by the supplied air pressure because the supply port 150 is provided downward.

  Thus, the exhaust gas generated when the waste tire T is ashed is discharged through the discharge path 320 to the holding chamber 220 maintained at a certain temperature or higher. The exhaust gas discharged into the holding chamber 220 is discharged from the exhaust gas discharge port 230 together with other exhaust gases in the blast furnace 200. Since the connection port of the discharge path 320 is separated from the exhaust gas discharge port 230 by a certain distance or more, the exhaust gas stays in the holding chamber 220 maintained at a certain temperature or more for a certain time or more.

  The exhaust gas discharged from the exhaust gas discharge port 230 is rapidly cooled to about 200 degrees in the cooling tower 500, then dust is removed by the bag filter 600, and the sulfur compound is removed by the sulfur removing device 700, and then the air is discharged into the atmosphere. Will be released. For this reason, this processing system releases a gas with a very small amount of dioxin and sulfur compounds to the atmosphere.

  Further, after the ashing as described above is completed and the temperature in the furnace becomes below a certain level, the lid 400 of the processing furnace 100 is raised to remove the ashed waste tire T from the opening 130. Then, as described above, the waste tire T is carried in and prepared so that the dry distillation can be started after the dry distillation by the other processing furnace 100 is completed. Then, after the dry distillation in the other processing furnace 100 is completed, the dry distillation as described above is performed.

  The present embodiment is configured as described above and treats the waste tire T by the above-described method. However, the present invention is not limited to this, and the design can be changed as appropriate within the intended scope of the present invention. .

  In other words, the system of the above embodiment has been described for melting aluminum as a gas combustion unit that uses the energy obtained by burning dry distillation gas. However, the gas combustion unit may employ a boiler, a generator, or the like. Is possible.

Claims (15)

A plurality of treatment furnaces for containing waste in a sealed state so as to generate dry distillation gas from waste such as tires;
A gas combustion section that uses energy obtained by burning dry distillation gas generated in the processing furnace;
A dry distillation gas flow path for supplying dry distillation gas from the processing furnace to the gas combustion section,
The treatment furnace is provided with a discharge path for discharging the exhaust gas in the furnace, and the discharge path is provided so as to pass through a region where the exhaust gas is maintained at a certain temperature or higher by the gas combustion unit. ,
An on-off valve is provided in the dry distillation gas passage and the discharge passage, and a waste treatment system for tires and the like. The processing system according to claim 1,
The on-off valve is provided in the vicinity of the furnace of the processing furnace, and is a waste processing system such as a tire. The processing system according to claim 1 or 2, wherein
Disposal of tires, etc., characterized in that dry distillation air supply means for supplying air to the processing furnace is provided, and the amount of air supplied during dry distillation by the dry distillation air supply means is controlled by the control means Material processing system. A processing system according to any one of claims 1 to 3,
An upper supply port for supplying air to the processing furnace is provided at an upper portion of the processing furnace, and air supply from the upper supply port is controlled by a control unit. Waste disposal system. A processing system according to any one of claims 1 to 4,
The exhaust gas discharged from the discharge passage passes through a region maintained at a certain temperature or higher by the gas combustion unit, and is disposed so as to be cooled on the downstream side thereof. Material processing system. A processing system according to any one of claims 1 to 5,
A waste treatment system for tires or the like, comprising suction means for sucking air in the gas combustion section downstream from the gas combustion section. A method of treating waste such as tires in a treatment furnace,
Generating carbonization gas in a sealed state in the treatment furnace,
Combusting the carbonization gas generated in the treatment furnace in the gas combustion section through the carbonization gas flow path and using the energy,
After the elapse of a certain time, the dry distillation gas flow path of the processing furnace is closed to open the exhaust path, and the exhaust gas is allowed to pass through a region maintained at a certain temperature or higher by the gas combustion unit, and the waste in other processing furnaces. Generate dry distillation gas in a sealed state,
A method for treating a waste such as a tire, wherein the carbonization gas generated in the other processing furnace is burned in a gas combustion section through a carbonization gas flow path to use energy. The processing method according to claim 7, comprising:
A method for treating waste such as tires, wherein the amount of air supplied to the treatment furnace during dry distillation is controlled by a control means. The processing method according to claim 7 or 8, comprising:
A method for treating waste such as tires, characterized in that after dry distillation, air is supplied from an upper supply port provided in an upper part of the processing furnace. A processing method according to any one of claims 7 to 9,
A method for treating waste such as tires, characterized in that exhaust gas discharged from the discharge passage passes through a region maintained at a certain temperature or higher by the gas combustion section and is cooled downstream thereof. A processing method according to any one of claims 7 to 10,
A method for treating waste such as tires, characterized in that air in the gas combustion section is sucked by suction means from the downstream side of the gas combustion section. A processing furnace for waste such as tires that generates carbonized gas from waste such as tires,
In addition to having a dry distillation gas delivery port for delivering dry distillation gas and an exhaust port for discharging exhaust gas,
An on-off valve is provided to open and close the flow path of the dry distillation gas outlet and outlet, and a waste processing furnace such as a tire. A processing furnace according to claim 12,
Waste such as tires characterized in that dry distillation air supply means for supplying air into the furnace is provided, and the amount of air supplied during dry distillation by the dry distillation air supply means is controlled by the control means Processing furnace. A processing furnace according to claim 12 or 13,
An upper supply port for supplying air is provided in the upper part of the furnace, and the air supply from the upper supply port is controlled by a control means. Processing furnace. A processing furnace according to any one of claims 12 to 14,
Having an opening for carrying waste into the furnace and a lid for closing the opening;
The lid body is provided so as to be slidable with respect to the furnace body, and is provided so as to be pressed against the furnace body side by a clamping means.

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