JP7223183B1 - Gasification equipment, incineration treatment equipment and gasification method - Google Patents

Abstract

A gasification facility, an incineration treatment facility, and a gasification method that can suppress the expansion of a dry area are provided. A gasification facility includes at least one gasification facility main body that gasifies a material to be processed input from the upstream side while moving the material to the downstream side, and an uppermost stream in the transport direction in which the material to be processed is transported. a suction part for sucking the gas in the inner space of the gasification equipment main body from the upstream side of the downstream end of the gasification equipment main body located on the side. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present disclosure relates to a gasification facility, an incineration facility, and a gasification method.

Patent Literature 1 describes a rotary kiln type incinerator that includes a rotary kiln and a stoker furnace. The rotary kiln type incinerator described in Patent Document 1 gasifies the wastes fed from the hopper in the rotary kiln, and then incinerates the residue that has not been gasified in the rotary kiln in the stoker furnace. In this rotary kiln type incinerator, a part of the exhaust gas is recirculated to the kiln inlet (hereinafter referred to as EGR) to control the oxygen concentration in the kiln and perform suppressed combustion.

Japanese Patent Publication No. 4-65289

In a gasification facility such as a rotary kiln described in Patent Document 1, after an object to be processed that is fed upstream is dried, the temperature rises as it moves downstream and is gasified. That is, on the upstream side of the gasification equipment, a drying area for removing moisture from the material to be treated is formed, and on the downstream side of the drying area, the gasification area is formed. However, in the above gasification equipment, when a material to be treated with a high water content is introduced, the dry area expands, and even if the EGR amount is decreased and the oxygen mixing rate is increased, a predetermined gasification rate can be obtained. It may become difficult to secure a sufficient gasification area.

An object of the present disclosure is to provide a gasification facility, an incineration treatment facility, and a gasification method capable of suppressing expansion of a dry area.

In order to solve the above problems, the gasification equipment according to the present disclosure includes at least one gasification equipment main body that gasifies a material to be processed that is input from an upstream side while moving the material to be processed to a downstream side; a suction part for sucking the gas in the inner space of the gasification equipment main body from the upstream side of the downstream end of the gasification equipment main body located on the most upstream side in the conveying direction of the gasification equipment main body, wherein the suction part is and a flow control unit capable of adjusting the flow rate of the gas sucked from the inner space .

The incineration equipment according to the present disclosure includes the gasification equipment and a reburning chamber for burning the combustion gas generated by the gasification treatment of the gasification equipment main body.

A gasification method according to the present disclosure is a gasification method in which a material to be processed that is input from the upstream side is gasified while being moved downstream by a gasification facility that includes at least one gasification facility main body, The gas in the inner space of the main body of the gasification equipment is sucked from the upstream side of the downstream end of the main body of the gasification equipment on the most upstream side, and the gasification is performed based on the position of the flame in the inner space of the main body of the gasification equipment. Increases or decreases the flow rate of the gas sucked from the inner space of the equipment body .

According to the gasification equipment, the incineration equipment, and the gasification method of the above aspects, it is possible to suppress the expansion of the dry area.

1 is a diagram showing a schematic configuration of an incineration facility according to a first embodiment of the present disclosure; FIG. It is a graph of the simulation result in the gasification equipment of the comparative example, in which the horizontal axis is the distance from the upstream end, and the vertical axis is the temperature of the object to be treated and the heat flux from the flame to the object to be treated. It is a graph in a comparative example, in which the horizontal axis is the distance from the upstream end, the vertical axis is the combustible content of the material to be treated, and the mass flow rate of water. 3 is a graph corresponding to FIG. 2 in an embodiment of the present disclosure; 4 is a graph corresponding to FIG. 3 in an embodiment of the present disclosure; FIG. 2 is a diagram corresponding to FIG. 1 in the second embodiment of the present disclosure; FIG. 7 is a diagram showing an example of camera arrangement and its viewing angle in the second embodiment of the present disclosure; FIG. 4 is a block diagram showing a schematic configuration of a control device according to a second embodiment of the present disclosure; FIG. FIG. 4 is a functional block diagram of a control device in the second embodiment of the present disclosure; FIG. It is a figure corresponding to FIG. 1 in the third embodiment of the present disclosure. FIG. 11 is a functional block diagram of a control device according to a third embodiment of the present disclosure; FIG. FIG. 2 is a diagram corresponding to FIG. 1 in a first modified example of each embodiment of the present disclosure; FIG. 2 is a diagram corresponding to FIG. 1 in a second modified example of each embodiment of the present disclosure;

Gasification equipment, incineration treatment equipment, and gasification methods according to embodiments of the present disclosure will be described below with reference to the drawings.
<First embodiment>
《Configuration of incineration facility》
FIG. 1 is a diagram showing a schematic configuration of an incineration facility according to the first embodiment of the present disclosure.
The incineration facility of the first embodiment is a so-called rotary kiln type incinerator, and is capable of incinerating industrial waste such as plastics and sludge with a high water content. As shown in FIG. 1, the incineration facility 1 of the first embodiment includes a supply hopper 10, an input device 11, a rotary kiln (gasification facility main body) 12, a stoker furnace (gasification facility main body) 13, and ash A cooling tank 14 , a reburning chamber 15 , a boiler 16 , an exhaust gas treatment device 17 , a funnel 18 , an air supply device 19 , an exhaust gas recirculation section 20 and a suction section 21 are provided. The gasification facility of the present disclosure has at least one gasification facility body. In this embodiment, two gasification equipment bodies, a rotary kiln 12 and a stoker furnace 13, are provided. The stoker furnace 13 can also be called an incinerator for incinerating the residue discharged from the rotary kiln 12 .

The supply hopper 10 has a supply port 10a for the material to be processed, and sequentially supplies the material to be processed input to the supply port 10a to the input device 11 . The supply hopper 10 exemplified in this embodiment extends vertically and has a supply port 10a at its upper end. In addition, the supply hopper 10 has a plurality of (two in this embodiment) dampers 25, and by alternately opening and closing these dampers 25, it is possible to adjust the supply amount of the material to be processed to the feeding device 11. It's becoming

The loading device 11 loads the material to be processed into the rotary kiln 12 through the transport path. The loading device 11 exemplified in this embodiment has a pusher 26 that pushes the workpieces supplied from the supply hopper 10 toward the rotary kiln 12 . The pusher 26 of this embodiment is configured to push the workpiece supplied from above in the horizontal direction or slightly below the horizontal direction. The workpiece pushed by the pusher 26 is pushed from the upstream end 12u of the rotary kiln 12 into the inner space 12i of the rotary kiln 12 . In the following description, the conveying direction of the workpiece conveyed in the rotary kiln 12 is referred to as the conveying direction Dt, the upstream direction of the conveying direction Dt is the upstream side Dtu, and the downstream direction of the conveying direction Dt is the downstream side. Dtd.

The rotary kiln 12 thermally decomposes and gasifies the material to be processed that has been introduced into the inner space 12i while conveying the material to be processed from the upstream end 12u toward the downstream end 12d. In this embodiment, the rotary kiln 12 and the stoker furnace 13 are arranged in series in the transport direction Dt of the material to be processed, and the rotary kiln 12 serves as the most upstream gasification equipment main body. The rotary kiln 12 has a rotatable cylindrical kiln body 27 with a refractory layer (not shown) on its inner wall. The material to be processed, which is put into the inner space 12i of the kiln main body 27 surrounded by the refractory layer, is stirred by the rotation of the kiln main body 27, for example, by the heat transmitted from the downstream side Dtd, and , the temperature rises as it moves downstream Dtd. Then, the object to be processed is thermally decomposed and gasified by this temperature rise. That is, in the area near the upstream end 12u of the rotary kiln 12, a dry area is formed in which the material to be processed is not gasified, and the material to be processed is gasified on the side closer to the downstream end 12d than the dry area. A gasification zone is formed. The axis of rotation of the kiln body 27 of this embodiment extends horizontally or slightly downwardly inclined toward the downstream.

The object to be processed in the inner space 12i of the rotary kiln 12 is gasified by the suppressed combustion in the oxygen-deficient state. Combustion gas generated by gasifying the material to be processed in the rotary kiln 12 flows mainly from the downstream end 12 d through the space above the stoker furnace 13 and into the reburning chamber 15 . On the other hand, the residue of the material to be processed that has not been gasified is supplied from the downstream end 12 d of the rotary kiln 12 to the stoker furnace 13 .

The stoker furnace 13 incinerates the residue of the material to be processed that has not been gasified by the rotary kiln 12 . The stoker furnace 13 of this embodiment incinerates the residue dropped from the downstream end 12d of the rotary kiln 12 on a fire grate. The residue incinerated by the stoker furnace 13 is cooled by the ash cooling tank 14 and then taken out. The stoker furnace 13 thermally decomposes and gasifies a part of the residue (combustible matter) when incinerating the residue. In other words, as described above, the stoker furnace 13 functions not only as an incinerator for incinerating the residue, but also as a main body of gasification equipment for gasifying part of the residue.

The reburning chamber 15 burns the combustion gas thermally decomposed and gasified by the rotary kiln 12 and the combustion gas thermally decomposed and gasified by the stoker furnace 13 using a flame. The gas combusted by this reburning chamber 15 is sent to the boiler 16 . The boiler 16 burns incomplete combustion gas, cracked gas, etc. generated in the reburning chamber 15 . The gas sent out from the boiler 16 is subjected to a treatment to remove harmful substances such as nitrogen oxides and a cooling treatment by the exhaust gas treatment device 17, and then is released to the outside air through the funnel 18. FIG.

The air supply device 19 supplies incineration air to the stoker furnace 13 and the reburning chamber 15 . That is, the oxygen concentration of the air supplied by the air supply device 19 is such that the residue in the stoker furnace 13 and the combustion gas in the reburning chamber 15 can be completely burned. The air supply device 19 has a fan 22 capable of adjusting the amount of air supplied to the stoker furnace 13 and the reburning chamber 15 .

The exhaust gas recirculation unit 20 supplies (in other words, recirculates) the exhaust gas treated by the exhaust gas treatment device 17 from the outlet of the exhaust gas treatment device 17 to the inner space 12i from the upstream end 12u of the rotary kiln 12 . The exhaust gas treated by the exhaust gas treatment device 17 is gas with an oxygen concentration lower than that of the atmosphere. In addition, this exhaust gas is also a low-temperature, high-humidity gas. The exhaust gas recirculation unit 20 has an EGR fan 23 capable of adjusting the flow rate (in other words, EGR amount) of the exhaust gas to be recirculated to the rotary kiln 12 .

When the flow rate of the exhaust gas recirculated to the rotary kiln 12 by the exhaust gas recirculation unit 20 is increased, the oxygen concentration and temperature in the inner space 12i of the rotary kiln 12 are lowered. On the other hand, when the flow rate of the exhaust gas recirculated by the exhaust gas recirculation unit 20 is reduced, the oxygen concentration in the inner space 12i increases, the oxidation of the material to be treated progresses, and the temperature in the inner space 12i also rises. However, if the temperature of the material to be processed rises too much, the refractory layer of the kiln body 27 may be damaged. Therefore, the exhaust gas recirculation unit 20 of the present embodiment adjusts the flow rate of the exhaust gas to be recirculated, thereby preventing the temperature of the object to be processed introduced into the inner space 12i from rising excessively. In the present embodiment, the case where the incineration facility 1 includes the exhaust gas recirculation unit 20 has been described. You may

The suction unit 21 sucks the gas in the inner space 12i from the upstream side Dtu of the rotary kiln 12, which is the main body of the gasification equipment located on the most upstream side, from the downstream end 12d. More specifically, the suction unit 21 guides the sucked gas to the outside of the rotary kiln 12 . Here, when the stoker furnace 13 is regarded as a main body of gasification equipment, the incineration equipment 1 of this embodiment is provided with two main bodies of gasification equipment, the rotary kiln 12 and the stoker furnace 13 . The suction unit 21 of the incineration equipment 1 of the present embodiment is arranged upstream of the rotary kiln 12 and the stoker furnace 13, which are the main bodies of these two gasification equipments. The gas in the inner space 12i is sucked from the upstream side Dtu.

The suction unit 21 of this embodiment includes a suction pipe 28 and a flow rate adjustment unit 29 .
The suction pipe 28 allows the inner space 12i of the rotary kiln 12 and the inner space 15i of the reburning chamber 15 to communicate with each other. A first end portion 28a of the suction pipe 28 exemplified in the present embodiment is arranged near the upstream end 12u of the rotary kiln 12 and opens toward the downstream side Dtd, that is, the side where the downstream end 12d is arranged. The suction pipe 28 exemplified in the present embodiment extends from the first end 28a to the upstream side Dtu, and the wall portion 31 of the loading device 11 forming the conveyance path of the material to be processed on the upstream side Dtu from the upstream end 12u. penetrates. After passing through the wall portion 31 , the suction pipe 28 extends toward the reburning chamber 15 . Furthermore, the second end 28b of the suction pipe 28 opposite to the first end 28a is connected to the reburning chamber 15 . Here, the case where the suction pipe 28 extends to the outer peripheral side through the wall portion 31 is illustrated, but the position where the suction pipe 28 extends to the outer peripheral side of the rotary kiln 12 is not limited to the position of the wall portion 31. For example, the kiln Any position other than the rotating portion of the rotary kiln 12, such as a position between the main body 27 and the charging device 11, may be used.

The flow rate adjusting section 29 can adjust the flow rate of gas sucked from the inner space 12i. In this embodiment, a variable flow rate suction fan 30 is used as the flow rate adjustment unit 29 . That is, by operating the suction fan 30, the gas in the inner space 12i of the rotary kiln 12 is sucked from the first end 28a of the suction pipe 28 into the inner channel, and the gas flowing into the inner channel of the suction pipe 28 is fed into the reburning chamber 15 through the inner passage of the suction pipe 28 . In this first embodiment, the combination of the rotary kiln 12, the stoker furnace 13, and the suction unit 21 or the combination of the rotary kiln 12 and the suction unit 21 constitute the gasification facility of the present disclosure.

Next, an example and a comparative example of the present disclosure will be described with reference to FIGS. 2 to 5. FIG. It should be noted that the conditions of the example and the comparative example are the same except for the presence or absence of the suction unit 21 . That is, the water content of each of the objects to be treated in the example and the comparative example is the same. Furthermore, the case where the distance from the upstream end 12u to the downstream end 12d of the rotary kiln 12 in this embodiment and the comparative example is 15 m is illustrated.
FIG. 2 is a graph of simulation results in the gasification facility of the comparative example, in which the horizontal axis is the distance from the upstream end, and the vertical axis is the temperature of the object to be treated and the heat flux from the flame to the object to be treated. is. FIG. 3 is a graph in a comparative example, in which the horizontal axis is the distance from the upstream end, the vertical axis is the combustible content of the material to be treated, and the mass flow rate of water. 2 and 3 are on the same scale, the left end of the horizontal axis is the upstream end 12u of the rotary kiln 12, and the right end of the horizontal axis is the downstream end 12d of the rotary kiln 12. be.

(Comparative example)
As shown in FIG. 2, in the case of the comparative example that does not have the suction part 21, the heat flux of the radiant heat generated by the flame existing near the downstream end 12d (indicated by the thin line in FIG. 2, the value is the right horizontal axis) peak (eg, about 35 kW/m ² ) is closer to the downstream end 12d (eg, 10 to 11 m) than the longitudinal center of the rotary kiln 12 (eg, 7.5 m). The heat flux of this radiant heat gradually increases from the upstream end 12u (0 m) toward the peak. When the heat flux of radiant heat reaches the peak, the heat flux gradually decreases toward the downstream end 12d (for example, 15m). This decrease in heat flux is due to the fact that the temperature rise of the object to be processed slows down near the downstream end 12d.

The temperature of the object to be processed in the comparative example (indicated by the thick line in FIG. 2, the values are shown on the left horizontal axis) is measured at a predetermined distance (for example, 4 ~5 m). This is because the moisture contained in the object to be processed evaporates even though the heat flux of the radiant heat is increasing. The upper range is called the dry region. The length of this dry area increases or decreases according to the water content of the material to be treated (indicated by the thick line in FIG. 3). After exiting the drying zone, the temperature of the object to be processed rises with the increase in heat flux, and reaches the upper limit temperature near the downstream end 12d (for example, 13 to 15 m).

As shown in FIG. 3, the mass flow rate of the combustible portion of the object to be treated (indicated by the thin line in FIG. 3) does not change in the dry region and gradually decreases as the temperature of the object to be treated rises. In this comparative example, the combustible content (for example, also referred to as residue) remaining up to the downstream end 12d was about 20%. In other words, in the rotary kiln 12, 80% of the combustible matter contained in the material to be processed is gasified, and the remaining 20% is sent to the stoker furnace 13 without being gasified, and is burned in the stoker furnace 13 (in other words, gasification). In FIG. 3, the mass flow rate of the water content of the object to be treated is indicated by a thick line, and when the mass flow rate of the water content of the object to be treated becomes substantially zero, it escapes from the above drying region. . That is, only the moisture evaporates in the dry area, during which the temperature of the object to be treated is kept at 100° C. as shown in FIG. Combustible matter volatilizes. Here, since the material to be processed moves at a predetermined speed in the rotary kiln 12, the combustible content and water content of the material to be processed are represented by the mass flow rate.

(Example)
FIG. 4 is a graph corresponding to FIG. 2 in an embodiment of the present disclosure. FIG. 5 is a graph corresponding to FIG. 3 in an embodiment of the present disclosure. Note that the horizontal axis of FIG. 4 and the horizontal axis of FIG. 5 have the same scale.
As shown in FIG. 4, in the case of this embodiment in which the gas in the inner space 12i is sucked by the suction part 21, the heat flux of the radiant heat (indicated by the thin line in FIG. 4) due to the flame existing near the downstream end 12d is The peak (for example, about 35 kW/m ² ) is slightly closer to the upstream end 12u (for example, 6 to 7 m) than the longitudinal center of the rotary kiln 12 (for example, 7 to 8 m). That is, it can be seen that the peak of the heat flux moves closer to the upstream end 12u than in the comparative example. The rate of increase of the heat flux from the upstream end 12u toward the peak in this embodiment is higher than the rate of increase of the heat flux in the comparative example.

Furthermore, as can be seen from the temperature of the object to be processed in the example (indicated by the thick line in FIG. 4), the drying area in this example is shorter than the drying area in the comparative example (for example, the distance from the inlet is 1 m 3 to 4 m from the position)). In other words, in the example, drying of the object to be processed is completed in a short time, and the position where the temperature starts to rise after drying is closer to the upstream end 12u than in the comparative example. That is, since the length of the rotary kiln 12 is constant, the ratio of the dry area is reduced, so that the gasification area in which gasification is performed is relatively expanded. In the comparative example of FIG. 2, the range of 4.2 m to 15 m is the gasification region, but in the example of FIG. 5, the range of 3.2 m to 15 m is the gasification region, which is expanded I know there is.
As in the comparative example, the temperature of the object to be treated starts to rise after exiting the drying zone in this example as well. It can be seen that the temperature of the object to be processed reaches the peak temperature at a shorter distance.

As shown in FIG. 5, the water mass flow rate of the example (indicated by the thick line in FIG. 5) drops earlier than the water mass flow rate of the comparative example at the same distance from the upstream end 12u (inlet). ing. That is, since the drying region of the example is shorter than the drying region of the comparative example, the mass flow rate of the combustible component (indicated by the thin line in FIG. 5) begins to decrease earlier. In the example, the rate of decrease in the mass flow rate of the combustible component is also higher than in the comparative example. In this example, the combustible content (in other words, residue) remaining up to the downstream end 12d was approximately 10%.

(Effect)
In the above-described first embodiment, the gas in the inner space 12i is sucked from the upstream side Dtu of the rotary kiln 12, which is the main body of the gasification equipment on the most upstream side, from the downstream end 12d.
As a result, when the material to be processed put into the rotary kiln 12 is gasified while being moved to the downstream side Dtd, the flame of the downstream side Dtd can be guided and drawn into the upstream side Dtu. Therefore, the peak of the heat flux due to the radiant heat of the flame can be moved to the upstream side Dtu. In addition, since forced convection is generated to draw the high-temperature gas from the downstream side Dtd to the upstream side Dtu, it is possible to accelerate the drying and temperature increase of the object to be processed along with the radiant heat.
Therefore, even in the case of gasifying an object to be treated with a high water content, it is possible to sufficiently secure the gasification region of the rotary kiln 12 by suppressing the expansion of the drying region.

In the first embodiment described above, the suction unit 21 includes the flow rate adjustment unit 29 .
Thereby, the flow rate of the sucked gas can be adjusted according to the water content of the object to be processed and the calorie of the object to be processed.
Therefore, it is possible to prevent the temperature of the object to be processed that is put into the inner space 12i of the rotary kiln 12 from rising excessively, and as a result, the thermal load on the rotary kiln 12 can be reduced.
Moreover, since the residue coming out of the rotary kiln 12 can be reduced, it is possible to suppress the generation of unburned residue when the residue is incinerated in the stoker furnace 13 .

In the above-described first embodiment, the gas sucked by the suction portion 21 is allowed to flow into the reburning chamber 15 .
As a result, the combustion gas contained in the sucked gas can be burned in the reburning chamber 15 . Here, the gas sucked by the suction unit 21 is the gas that flows from the upper space of the stoker furnace 13 into the inner space 12i when drawing the flame of the downstream side Dtd of the rotary kiln 12 . The gas sucked from the suction part 21 is partially generated when the primary air blown from under the grate of the stoker furnace 13 comes into contact with the combustible gas volatilized from the combustibles in the stoker furnace 13 and the rotary kiln 12 at a high temperature. It is a so-called low-oxygen gas that has a lower oxygen concentration than the oxygen concentration in the air after combustion. Therefore, the gas with a low oxygen concentration sucked by the suction part 21 is subjected to reductive combustion in the reburning chamber 15 . In the reburning chamber 15, combustion gas generated by incineration of the residue in the stoker furnace 13 is also burned, so that nitrogen oxides generated in the stoker furnace 13 can be reduced.

Here, the gas flowing into the inner space 12i from the downstream end 12d of the rotary kiln 12 is a high temperature gas of about 900° C. and contains a large amount of oxygen. The reason why such a large amount of oxygen is contained is that the gas flowing into the inner space 12i from the downstream end 12d of the rotary kiln 12 contains a large amount of air (oxygen) blown from the grate of the stoker furnace 13. be. Therefore, when the gas flows in the inner space 12i toward the upstream side Dtu, there is an effect of promoting combustion while oxygen remains. On the other hand, after consuming oxygen on the way to the upstream end 12u of the rotary kiln 12, the combustion stops, but the high temperature gas has the effect of heating the material to be processed. Further, in the present embodiment, the gas flow from the vicinity of the downstream end 12d of the rotary kiln 12 toward the upstream end 12u of the rotary kiln 12 causes the flame igniting the flame near the downstream end 12d and the material to be processed in the inner space 12i to flow upstream. By guiding to the side Dtu, the object to be processed in the vicinity of the upstream end 12u can be heated, and the evaporation of water contained in the object to be processed can be accelerated.

Furthermore, in the above-described first embodiment, both the exhaust gas recirculation section 20 and the suction section 21 are provided for the rotary kiln 12 . As a result, when the property of the material to be treated that is thrown into the supply hopper 10 is so-called plastic-rich, which contains a large amount of plastic, the exhaust gas recirculation unit 20 is mainly operated, while the property of the material to be treated has a high moisture content. In the case of sludge, the suction unit 21 can be mainly used for operation. Therefore, it becomes possible to expand the property range of the material to be processed that can be handled by the same rotary kiln 12 .

In addition, the gas flow from the downstream end 12d to the upstream end 12u is generated in the inner space 12i of the kiln body 27 by the suction by the suction part 21, so that the flame rising from the object to be processed inclines toward the upstream side Dtu. As a result, it is possible to increase the amount of radiant heat transferred from this flame to the object to be treated located on the upstream side Dtu, thereby increasing the temperature of the object to be treated. In addition, by increasing the temperature of the object to be processed, the ignition position of the flame of the object to be processed can be moved to the upstream side Dtu in the inner space 12i, so that the amount of radiant heat transfer to the object to be processed can be further increased. can be done.

Furthermore, in the first embodiment described above, compared to the case where the kiln body 27 is heated by flowing the heat medium from the downstream side Dtd on the outer peripheral side of the kiln body 27 toward the upstream side Dtu, the gas in the inner space 12i By sucking in, the flame of the downstream side Dtd is drawn into the inner space 12i, and the radiant heat of the drawn-in flame can directly raise the temperature of the object to be processed, so the drying area can be efficiently reduced. can be made

<Second embodiment>
Next, the incineration facility in the second embodiment of the present disclosure will be described based on the drawings. This second embodiment differs from the first embodiment only in that the state of the inner space 12i is monitored to control the flow rate adjusting section. Therefore, in the description of the second embodiment, the same reference numerals are given to the same parts as in the first embodiment, and redundant description is omitted.

FIG. 6 is a diagram corresponding to FIG. 1 in the second embodiment of the present disclosure.
As shown in FIG. 6, the incineration facility 101 of the second embodiment includes a supply hopper 10, a charging device 11, a rotary kiln 12, a stoker furnace 13, an ash cooling tank 14, a reburning chamber 15, and a boiler. 16, an exhaust gas treatment device 17, a funnel 18, an air supply device 19, an exhaust gas recirculation unit 20, a suction unit 121, a monitoring device 41, and a control device . Note that the exhaust gas recirculation section 20 may be omitted as in the first embodiment.

(monitoring device)
A monitoring device 41 monitors the state of the inner space 12 i of the kiln body 27 . A monitoring device 41 of this second embodiment includes a camera 43 as a detection end. This camera 43 photographs the inside of the inner space 12 i of the kiln body 27 and outputs the information of the photographed image to the control device 42 . A visible camera can be used as the camera 43 . 6 and 7 schematically show the camera 43 installed near the upstream end 12u of the rotary kiln 12 and the schematic layout of the camera 43. As shown in FIG. These are arranged in portions that do not affect the transportation of the object to be processed. For example, in FIG. 7, a window flange may be provided on a non-rotating fixed portion near the upstream end 12u of the rotary kiln 12, and the camera 43 may be fixed at a position to look through the window flange.

FIG. 7 is a diagram showing an example of camera arrangement and its viewing angle in the second embodiment of the present disclosure.
As schematically shown in FIGS. 6 and 7, the camera 43 of the second embodiment is installed at the position of the upstream end 12u of the kiln body 27 in the transport direction Dt. Shooting towards 12d. In this second embodiment, the viewing angle θ of the camera 43 is about 30°. This camera 43 is arranged vertically above the filling level of the object to be processed (in other words, the upper limit position of the object to be processed). The inlet of the rotary kiln 12 of the present embodiment faces an inlet of a charging device 11 for charging the material to be processed into the rotary kiln 12 . At the input port of the input device 11, the material to be processed may accumulate up to the upper end of the input port. Therefore, the camera 43 of the second embodiment is installed vertically above the upper end position of the input port of the input device 11 in the inlet of the rotary kiln 12 . In addition, since the input device 11 of the second embodiment includes the pusher 26 , the camera 43 may be arranged above the upper end portion of the pusher 26 . Furthermore, the camera 43 of this second embodiment is installed facing obliquely downward on the downstream side Dtd. By installing the camera 43 in this way, even if the viewing angle θ is about 30°, it becomes possible to photograph the object to be processed spread out in the transport direction Dt in a wider range.

When the kiln body 27 is divided into four parts in the direction of the rotation axis, the camera 43 of this second embodiment can photograph a range from a position of 1/4 to a position of 3/4 from the upstream end 12u. Since the material to be processed filled in the inner space 12i is gasified toward the downstream side Dtd, the filling level of the material to be processed (solid) decreases. Note that FIG. 6 shows an example in which the camera 43 is arranged in the loading device 11, but for convenience of illustration, the position of the camera 43 is set to the upstream side Dtu from the actual installation position (near the upstream end 12u of the rotary kiln 12). and

(Control device)
FIG. 8 is a block diagram showing a schematic configuration of a control device according to the second embodiment of the present disclosure;
As shown in FIGS. 6 and 8, the control device 42 controls the flow rate adjusting section 29, which is a so-called operation terminal, based on the monitoring result of the monitoring device 41. FIG. More specifically, the control device 42 obtains the position of the flame inside the kiln body 27 based on the image captured by the camera 43, and controls the flow rate adjusting section 29 based on the position of the flame. That is, the control device 42 controls the flow rate of gas sucked by the flow rate adjusting section 29 based on the position of the flame. Of course, in addition to the position of the flame, it is also possible to freely control the flow rate of the sucked gas by the flow rate adjusting unit 29 together with other physical quantities such as the amount of material to be processed, the combustion temperature, etc.

(Hardware configuration)
As shown in FIG. 8, the control device 42 of the second embodiment includes a CPU 53 (Central Processing Unit), a ROM 54 (Read Only Memory), a RAM 55 (Random Access Memory), an HDD 56 (Hard Disk Drive), a signal transmission/reception module 47, etc. is a computer such as a so-called PC (personal computer).

(function block)
FIG. 9 is a functional block diagram of a control device in the second embodiment of the present disclosure;
As shown in FIG. 9, the CPU 53 of the control device 42 executes a program stored in advance in a storage device such as the ROM 54 or the HDD 56 to control the signal input unit 57, the flame position determination unit 58, the suction amount calculation unit 59, Each functional configuration of the output unit 60 is realized.
The signal input unit 57 receives the information of the captured image of the camera 43 input to the signal transmission/reception module 47 at predetermined intervals.

The flame position determination unit 58 determines the position of the flame inside the kiln body 27 based on the captured image received by the signal input unit 57 . Specifically, the position of the flame in the conveying direction Dt of the object to be processed is obtained by image analysis of the captured image of the camera 43 . Here, the flame position means the most upstream position Dtu in the transport direction Dt of the flame generated in the inner space 12i. Furthermore, the position of the flame can also be rephrased as the boundary position between the burning area of the material to be processed near the downstream end 12d and the non-burning area adjacent to the upstream side Dtu of this burning area. . The position of the flame in the transport direction Dt has a correlation with the size of the dry area. That is, the closer the flame position is to the downstream end 12d, the larger the dry area may be, while the closer the flame position is to the upstream end 12u, the smaller the dry area is.

The suction amount calculation unit 59 obtains the gas flow rate (volume flow rate) to be drawn by the flow rate adjustment unit 29 based on the position of the flame obtained by the flame position determination unit 58 . More specifically, when it is determined that the flame exists at the downstream side Dtd of the predetermined reference range of the flame position, the suction amount calculation unit 59 increases the gas flow rate sucked by the flow rate adjustment unit 29, When it is determined that there is a flame on the upstream side Dtu from the reference range, the flow rate of the sucked gas is decreased by the flow rate adjusting section 29 . Here, the flow rate of the gas sucked by the flow rate adjusting section 29 has a correlation with the position of the flame, and can be obtained by simulation or experiment. The suction amount calculator 59 of the second embodiment obtains the flow rate of the gas to be sucked using a table, map, formula, etc. of flame positions and gas flow rates stored in advance in the ROM 54 or the like.

The output unit 60 outputs a control signal to the suction fan 130 of the suction unit 121 via the signal transmission/reception module 47 so as to suck the gas at the flow rate calculated by the suction amount calculation unit 59 . A flow rate sensor (not shown) for detecting the flow rate of the gas sucked by the suction fan 130 is provided, and the output unit 60 feedback-controls the suction fan 130 based on the detection result of the flow rate sensor. may Of course, along with other physical quantities, the amount of material to be processed, the combustion temperature, etc., the flow rate of the sucked gas can also be freely controlled by the flow rate adjusting section 29 according to the need.

(Effect)
According to the incineration equipment 101 of the second embodiment, the flow rate of the gas sucked by the suction part 121 can be automatically adjusted according to the position of the flame inside the kiln body 27 of the rotary kiln 12 .
Therefore, it is not necessary for the operator to manually adjust the flow rate of the sucked gas, so that the burden on the operator can be reduced while improving the gasification rate of the material to be processed at the downstream end 12d of the kiln body 27. .

Furthermore, since the position of the flame is obtained based on the image captured by the camera 43, the number of parts is not increased compared to the case where a plurality of sensors for detecting the position of the flame are arranged side by side in the rotary kiln 12. can be suppressed.
Moreover, since the camera 43 is a visible camera, an expensive camera is not required, and an increase in cost can be suppressed.
Since it is possible to monitor the inside of the kiln from the image captured by the camera, it is possible to detect an abnormal operating state when the occupied volume of the material to be processed in the kiln or the height of the flame changes suddenly.

<Third embodiment>
Next, the incineration facility in the third embodiment of the present disclosure will be described based on the drawings. This third embodiment differs from the second embodiment only in that the monitoring device detects the state quantity of the gas sucked by the suction unit. Therefore, in the description of the third embodiment, FIG. 8 is used, the same parts as in the second embodiment are given the same reference numerals, and duplicate descriptions are omitted.

FIG. 10 is a diagram corresponding to FIG. 1 in the third embodiment of the present disclosure.
As shown in FIG. 10, the incineration facility 201 of the third embodiment includes a supply hopper 10, a charging device 11, a rotary kiln 12, a stoker furnace 13, an ash cooling tank 14, a reburning chamber 15, and a boiler. 16, an exhaust gas treatment device 17, a funnel 18, an air supply device 19, an exhaust gas recirculation unit 20, a suction unit 221, a monitoring device 241, and a control device 242. Note that the exhaust gas recirculation section 20 may be omitted as in the first and second embodiments.

A monitoring device 241 monitors the state of the inner space 12 i of the kiln body 27 . A monitoring device 241 of the third embodiment includes a detection device 44 that detects the state of the gas sucked by the suction part 221 as a detection end. The detector 44 detects at least one of the temperature, humidity, oxygen concentration, carbon monoxide concentration (CO) and carbon dioxide concentration (CO ₂ ) of the gas sucked from the inner space 12i of the kiln body 27 . The detection device 44 outputs information on the detection result of the above detection to the control device 242 . Note that the number of detection devices 44 is not limited to one. For example, as the plurality of detection devices 44, a detection device that detects temperature, a detection device that detects humidity, a detection device that detects oxygen concentration, and a detection device that detects carbon monoxide concentration and carbon dioxide concentration are individually provided. may

(Hardware configuration)
Since the hardware configuration of the control device 242 of the third embodiment is the same as that of the control device 42 of the second embodiment (see FIG. 8), detailed description thereof will be omitted.

(function block)
FIG. 11 is a functional block diagram of a control device according to the third embodiment of the present disclosure;
As shown in FIG. 11, the CPU 53 of the control device 242 executes a program stored in advance in a storage device such as the ROM 54 and the HDD 56 to control the signal input unit 257, the flame position determination unit 258, the suction amount calculation unit 259, Each functional configuration of the output unit 260 is realized.
The signal input unit 257 receives information on the detection result of the detection device 44 input to the signal transmission/reception module 47 at predetermined intervals.

The flame position determination unit 258 determines the position of the flame inside the kiln body 27 based on the detection result of the detection device 44 received by the signal input unit 57 . The flame position determining unit 258 obtains the position of the flame in the conveying direction Dt of the object to be processed using a table, map, formula, or the like of at least one of temperature, humidity, and oxygen concentration and the position of the flame. These tables, maps, and formulas can be obtained through simulations, experiments, etc., and are stored in advance in storage devices such as the ROM 54 and the HDD 56 .

For example, when the detection device 44 detects the temperature, the temperature of the gas sucked by the suction part 221 becomes higher as the position of the flame is closer to the upstream end 12u, and lower as it is closer to the downstream end 12d. Further, for example, when the detection device 44 detects humidity, the humidity of the gas sucked by the suction unit 221 becomes higher as the position of the flame is closer to the downstream end 12d, and lower as it is closer to the upstream end 12u. Furthermore, when the detection device 44 detects the oxygen concentration, the oxygen concentration of the gas sucked by the suction part 221 becomes higher as the position of the flame is closer to the upstream end 12u, and lower as it is closer to the downstream end 12d. The carbon monoxide concentration (CO) and the carbon dioxide concentration (CO ₂ ) increase as the flame position approaches the upstream end 12u, and decrease as the flame position approaches the downstream end 12d. The case where at least one of the temperature, humidity, oxygen concentration, carbon monoxide concentration (CO), and carbon dioxide concentration (CO ₂ ) is detected by the detection device 44 has been described. , oxygen concentration, carbon monoxide concentration (CO), and carbon dioxide concentration (CO ₂ ). detection accuracy is improved.

The suction amount calculator 259 is the same as in the above-described second embodiment, and calculates the gas flow rate (volumetric flow rate) to be sucked by the flow rate adjuster 29 based on the flame position obtained by the flame position determination section 258 . The suction amount calculator 259 of the second embodiment obtains the gas flow rate to be sucked by using a flame position and gas flow rate table, map, formula, etc., stored in advance in the ROM 54 or the like.

The output unit 260 also has the same configuration as in the second embodiment. The output unit 260 outputs a control signal to the suction fan 230 of the suction unit 221 via the signal transmission/reception module 47 so as to suck gas at the flow rate calculated by the suction amount calculation unit 259 .

(Effect)
According to the incineration equipment 101 of the third embodiment, without using a camera as in the second embodiment, the amount of gas sucked by the suction part 221 is adjusted according to the position of the flame in the kiln body 27 of the rotary kiln 12. Flow rate can be adjusted automatically.
Therefore, since the operator does not need to manually adjust the flow rate of the sucked gas, it is possible to improve the gasification rate of the material to be processed at the downstream end 12d of the kiln body 27 and reduce the burden on the operator.

<First modification of each embodiment>
FIG. 12 is a diagram corresponding to FIG. 1 in the first modified example of each embodiment of the present disclosure.
In the above-described first to third embodiments, the case where the material to be processed is gasified by the rotary kiln 12 and the stoker furnace 13 will be described, and the kiln body 27 of the rotary kiln 12 is the gasification equipment body on the most upstream side. A case is illustrated. That is, in the first to third embodiments described above, the case where the dry area of the rotary kiln 12 is reduced by sucking the gas with the suction unit 21 has been exemplified. However, it is not limited to the case where the kiln body 27 of the rotary kiln 12 is the gasification equipment body on the most upstream side. For example, the suction unit of the present disclosure can also be applied to incineration facilities that do not include a rotary kiln 12.

As shown in FIG. 12, the suction part 321 of the incineration equipment 301 in this first modified example sucks the gas in the inner space 13i of the stoker furnace 13 from the upstream side Dtu of the downstream end 13d of the stoker furnace 13 . The suction part 321 of the modified example of each embodiment supplies the gas guided to the outside of the stoker furnace 13 to the inner space 15 i of the reburning chamber 15 arranged above the stoker furnace 13 . Into the stoker furnace 13, the material to be processed that has been pressed by the loading device 11 is loaded. The object to be processed that has been put into the stoker furnace 13 in this way moves to the downstream side Dtd as the gasification progresses.

The object to be processed introduced into the stoker furnace 13 forms a dry zone in a range close to the upstream end 13u, and forms a gasification zone in the downstream side Dtd of this dry zone. By increasing or decreasing the flow rate of the gas sucked by the suction part 321, a predetermined gasification rate can be obtained in the same manner as in the above-described embodiments.

(Effect)
According to this first modification, the suction part 321 sucks the gas in the inner space 13i of the stoker furnace 13 from the upstream side Dtu of the downstream end 13d of the stoker furnace 13. Unlike the configuration in which the gas in the combustion section is extracted from the downstream side Dtd and supplied to the reburning chamber 15, the flame of the downstream side Dtd of the stoker furnace 13 can be drawn into the upstream side Dtu. It is possible to reduce the dry area formed in the range close to 13u.

Although the stoker furnace 13 has been described as an example of the incineration facility 301 described above, the stoker furnace 13 is not limited to any facility that gasifies the material to be treated while conveying it from the upstream side to the downstream side. do not have. Further, in the first to third embodiments, the case where the rotary kiln 12 and the stoker furnace 13 are provided has been described, but the incineration facility may be provided with only the rotary kiln 12 and without the stoker furnace 13 . In this case, the downstream end 12 d of the rotary kiln 12 should be communicated only with the inner space 15 i of the reburning chamber 15 .

<Second modification of each embodiment>
FIG. 13 is a diagram corresponding to FIG. 1 in a second modified example of each embodiment of the present disclosure.
In each of the above-described embodiments, the case where the gas in the inner space 12i is sucked by the suction fans 30 and 130 and the flow rate of the gas is adjusted has been described. However, it is not limited to this configuration. Since the pressure in the inner space 15i of the reburning chamber 15 is lower than that in the inner space 12i of the rotary kiln 12, for example, when the gas in the inner space 12i can be supplied to the reburning chamber 15 by the pressure difference between them, the first embodiment Alternatively, the suction fan 30 may be omitted and the suction pipe 28 alone may be used for suction (not shown) without providing a flow rate adjusting unit. Alternatively, as shown in FIG. It may be replaced with a variable damper 48 as the flow rate adjusting section 29 capable of adjusting the cross-sectional area of the flow path. The configuration of the variable damper 48 is also applicable to the second and third embodiments. In this case, the suction fan 130 of the second embodiment and the suction fan 230 of the third embodiment are replaced with the variable damper 48. , the controller 42, 242 controls the opening of the variable damper 48 to adjust the flow rate of the sucked gas.

<Other embodiments>
Although the embodiments and modifications have been described above with reference to the drawings, the specific configuration is not limited to the above, and various design changes and the like can be made.
In the first embodiment described above, the case where the position of the flame is moved to the upstream side Dtu and the downstream side Dtd only by increasing or decreasing the flow rate of the gas sucked by the suction portion 21 has been described. However, the configuration is not limited to the above. You can For example, when increasing the amount of material to be fed, the amount of moisture supplied to the drying area increases, making it difficult for the temperature of the material to rise, and the position of the flame moves downstream Dtd. can be done. On the other hand, if the amount of air supplied to the stoker furnace 13 is increased, the amount of heat generated by partial combustion with the combustible gas generated from the material to be processed in the inner space 12i of the kiln body 27 increases, so the high temperature region of the inner space 12i increases. can be increased to reduce the dry area and move the flame position upstream Dtu.

In the second embodiment described above, the case where the position of the flame is obtained using the visible camera has been described. However, camera 43 is not limited to a visible camera. For example, an infrared camera, a thermoviewer, or the like may be used. For example, when the camera 43 needs to pass through gas containing dust, it is effective to use an infrared camera whose wavelength is longer than that of visible light.

In the above-described second and third embodiments, the control device 42 executes the program to perform the functional configuration of the signal input unit 57, the flame position determination unit 58, the suction amount calculation unit 59, and the output unit 60 in software. A case of realizing However, each functional configuration of the signal input unit 57, the flame position determination unit 58, the suction amount calculation unit 59, and the output unit 60 may be realized by hardware.

For example, in each of the above-described embodiments, the case where the suction units 21 , 121 , 221 supply the sucked gas to the reburning chamber 15 has been described. However, it is not limited to this configuration. For example, the sucked gas may be combusted outside the reburning chamber 15, or may be detoxified without being combusted.

<Appendix>
Some or all of the gasification equipment, the incineration equipment, and the gasification method described in the embodiments can also be described in the following supplementary notes, but are not limited to the following.

(1) The gasification equipment according to the first aspect includes at least one gasification equipment main body 12, 13 for gasifying a material to be processed that is input from the upstream side while moving the material to the downstream side, and the material to be processed. The gas in the inner spaces 12i and 13i of the gasification equipment bodies 12 and 13 is sucked from the upstream side Dtu from the downstream end 12d of the gasification equipment bodies 12 and 13 located on the most upstream side in the conveying direction of the gasification equipment bodies 12 and 13. Suction parts 21, 121, 221, 321 are provided.
A rotary kiln and a stoker furnace can be mentioned as the main body of the gasification equipment.
For example, when a rotary kiln and a stoker furnace are installed in series from the upstream side in the transport direction Dt, the rotary kiln is the gasification equipment main body located on the most upstream side. In addition, when a plurality of rotary kilns are installed in order from the upstream side in the transport direction Dt, the rotary kiln located on the most upstream side is the gasification facility main body located on the most upstream side. Furthermore, when only one rotary kiln is installed, this rotary kiln becomes the main body of gasification equipment located on the most upstream side, and when only one stoker furnace is installed, this stoker furnace is located on the most upstream side. It will be the main body of the gasification facility located in
By configuring in this way, when the material to be processed that has been put into the gasification equipment main bodies 12 and 13 is gasified while being moved to the downstream side Dtd, the flame on the downstream side Dtd can be drawn into the upstream side Dtu. . Therefore, the peak of the heat flux due to the radiant heat of the flame can be moved to the upstream side Dtu. In addition, since forced convection is generated to draw the high-temperature gas from the downstream side Dtd to the upstream side Dtu, it is possible to accelerate the drying and temperature increase of the object to be processed along with the radiant heat.
Furthermore, the ignition position of the material to be treated in the main body of the gasification equipment can be moved to the upstream side.
Therefore, even in the case of gasifying an object to be treated with a high water content, it is possible to suppress the expansion of the drying area and sufficiently secure the gasification area of the gasification equipment bodies 12 and 13 .

(2) The gasification facility according to the second aspect is the gasification facility of (1), wherein the suction units 21, 121, and 221 are capable of adjusting the flow rate of the gas sucked from the inner space 12i. A flow rate adjusting unit 29 is provided.
A suction fan and a variable damper are examples of the flow rate adjusting unit.
By configuring in this way, the flow rate of the sucked gas can be adjusted according to the water content of the object to be treated and the calorie of the object to be treated.
Therefore, it is possible to prevent the temperature of the object to be processed from rising too much, and as a result, the thermal load on the gasification equipment 12, 13 can be reduced.

(3) The gasification facility according to the third aspect is the gasification facility of (2), comprising monitoring devices 41 and 241 for monitoring the state inside the gasification facility main body 12; and controllers 42 and 242 for controlling the flow rate adjusting unit 29 based on the monitoring result of 241 .
With this configuration, it is not necessary for the operator to manually adjust the flow rate of the sucked gas. can reduce the burden on

(4) The gasification facility according to the fourth aspect is the gasification facility of (3), comprising a camera 43 for photographing the inside of the gasification facility main body 12 as the monitoring device 41, and the control device 42 obtains the position of the flame in the main body 12 of the gasification equipment based on the photographed image of the camera 43, and controls the flow rate adjusting section 29 based on the position of the flame.
By configuring in this way, the position of the flame can be obtained based on the image captured by the camera 43, so compared to the case where a plurality of sensors for detecting the position of the flame are arranged side by side in the gasification equipment main body 12. , it is possible to suppress an increase in the number of parts.

(5) The gasification facility according to the fifth aspect is the gasification facility of (3) or (4), wherein the temperature, humidity, and oxygen of the gas sucked by the suction unit 221 as the monitoring device 241 A detection device 44 for detecting at least one of concentration, carbon monoxide concentration, and carbon dioxide concentration is provided, and the control device 242 detects the flame inside the gasification equipment main body 12 based on the detection result of the detection device 44. The position is obtained, and the flow control unit 29 is controlled based on the position of the flame.
By configuring in this way, for example, even if the space for installing the camera 43 cannot be secured, the position of the flame can be obtained based on the detection result of the detection device 44 .

(6) The incineration equipment 1, 101, 201, 301 according to the sixth aspect includes the gasification equipment of any one of (1) to (5) and the gasification treatment of the gasification equipment bodies 12, 13. and a reburning chamber 15 for burning the combustion gas generated by.
By configuring in this way, the combustion gas generated by the main bodies 12 and 13 of the gasification equipment can be incinerated in the reburning chamber 15 .

(7) The incineration equipment 1, 101, 201, 301 according to the seventh aspect is the incineration equipment 1, 101, 201, 301 of (6), wherein the suction units 21, 121, 221 are The gas thus obtained is caused to flow into the reburning chamber 15 .
With this configuration, the combustion gas contained in the gas sucked by the suction units 21 , 121 , 221 can be burned in the reburning chamber 15 . Further, since the gas sucked by the suction parts 21 , 121 , 221 has a low oxygen concentration, it can be reductively burned in the reburning chamber 15 . Therefore, in the inner space 15i of the reburning chamber 15, for example, nitrogen oxides can be reduced.

(8) The incineration equipment 1, 101, 201, 301 according to the eighth aspect includes the gasification equipment according to any one of (2) to (5) and the gasification treatment of the gasification equipment bodies 12, 13. and a reburning chamber 15 for combusting the combustion gas generated by and suction fans 30 and 130 provided in the suction pipe 28 as the flow rate adjusting unit 29 and capable of adjusting the flow rate of the gas from the gasification equipment main body 12 toward the reburning chamber 15. .
By configuring in this manner, the flow rate of gas directed to the reburning chamber 15 can be easily adjusted by the suction fans 30 and 130 .

(9) The incineration equipment 1, 101, 201 according to the ninth aspect includes the gasification equipment according to any one of (2) to (5) and the combustion generated by the gasification treatment of the gasification equipment body 12. and a reburning chamber 15 for combusting gas, and the suction part 221 causes the gasification equipment main body 12 to move due to the pressure difference between the inner space 15i of the reburning chamber 15 and the inner space 12i of the gasification equipment main body 12. A suction pipe 28 that guides the gas in the inner space 12i of the above to the reburning chamber 15, and a flow rate adjustment unit 29 that is provided in the suction pipe 28 to direct the gas from the gasification equipment main body 12 to the reburning chamber 15. and a variable damper 48 capable of adjusting the flow rate.
With this configuration, the variable damper 48 can easily adjust the flow rate of the gas toward the reburning chamber 15 .

(10) In the gasification method according to the tenth aspect, the gasification equipment having at least one gasification equipment main body 12, 13 moves the material to be processed input from the upstream side Dtu to the downstream side Dtd. In the gasification method, the gas in the inner spaces 12i and 13i of the gasification equipment bodies 12 and 13 is sucked from the upstream side Dtu from the downstream end 12d of the gasification equipment bodies 12 and 13 on the most upstream side. do.
By doing so, the flame on the downstream side Dtd can be drawn into the upstream side Dtu, so even when gasifying the material to be treated with a high water content, it is possible to suppress the expansion of the dry region.

(11) The gasification method according to the eleventh aspect is the gasification method of (10), wherein the gasification equipment is determined based on the positions of the flames in the inner spaces 12i and 13i of the gasification equipment bodies 12 and 13. The flow rate of the gas sucked from the inner spaces 12i, 13i of the main bodies 12, 13 is increased or decreased.
By doing so, for example, in the case of an object to be treated with a high water content, the flow rate of the sucked gas can be increased to suppress the expansion of the dry area, while the moisture content of the object to be treated is low. In this case, the temperature of the object to be processed can be prevented from rising excessively by reducing the flow rate of the sucked gas. As a result, it is possible to reduce the thermal load on the gasification equipment bodies 12 and 13 while suppressing a decrease in the gasification rate.

(12) A gasification method according to a twelfth aspect is the gasification method of (11), wherein the position of the flame is obtained based on an image of the inner space 12i of the gasification equipment main body 12 .
By doing so, the position of the flame can be easily obtained.

(13) The gasification method according to the thirteenth aspect is the gasification method of (11), wherein the temperature, humidity, and oxygen concentration of the gas sucked from the inner space 12i of the gasification equipment body 12 are A position of the flame is determined based on at least one of them.
By doing so, the position of the flame can be easily obtained.

Reference Signs List 1, 101, 201, 301 Incineration facility 10 Supply hopper 10a Supply port 11 Input device 12 Rotary kiln 12i Inner space 12u Upstream end 12d Downstream end 13 Stoker furnace 13i Inner space 14 Ash cooling Tank 15 Reburning chamber 16 Boiler 17 Exhaust gas treatment device 18 Funnel 19 Air supply device 20 Exhaust gas recirculation unit 21, 121, 221 Suction unit 22 Fan 23 EGR fan 25 Damper 26 Pusher 27 DESCRIPTION OF SYMBOLS Kiln main body 28... Suction piping 29... Flow rate adjustment part 30, 130, 230... Suction fan 31... Wall part 41, 241... Monitoring device 42, 242... Control device 43... Camera 44... Detecting device 48... Variable damper 53... CPU 54 ... ROM 55 ... RAM 56 ... HDD 57, 257 ... Signal input section 58, 258 ... Flame position determination section 59, 259 ... Suction amount calculation section 60, 260 ... Output section

Claims (11)

at least one main body of gasification equipment that gasifies the material to be treated that is input from the upstream side while moving the material to the downstream side;
a suction unit for sucking the gas in the inner space of the gasification equipment main body from the upstream side of the downstream end of the gasification equipment main body located on the most upstream side in the conveying direction in which the material to be processed is conveyed;
with
The suction unit is
A flow rate adjustment unit capable of adjusting a flow rate of the gas sucked from the inner space is provided.
Gasification facility. a monitoring device for monitoring the internal state of the main body of the gasification equipment;
a control device that controls the flow rate adjustment unit based on the monitoring result of the monitoring device;
The gasification facility of claim 1 , comprising: Equipped with a camera for photographing the inside of the main body of the gasification facility as the monitoring device,
3. The gasification facility according to claim 2 , wherein the control device obtains the position of the flame within the main body of the gasification facility based on the image captured by the camera, and controls the flow rate adjustment unit based on the position of the flame. . A detection device that detects at least one of the temperature, humidity, oxygen concentration, carbon monoxide concentration, and carbon dioxide concentration of the gas sucked by the suction unit as the monitoring device,
4. The control device according to claim 2 or 3 , wherein the control device obtains the position of the flame in the main body of the gasification facility based on the detection result of the detection device, and controls the flow rate adjustment unit based on the position of the flame. Gasification facility. The gasification facility according to any one of claims 1 to 4 ;
a reburning chamber for burning the combustion gas generated by the gasification process of the main body of the gasification equipment;
Incineration facility with 6. The incineration facility according to claim 5 , wherein the suction unit causes the sucked gas to flow into the reburning chamber. The gasification facility according to any one of claims 1 to 4 ;
a reburning chamber for burning the combustion gas generated by the gasification process of the main body of the gasification equipment;
The suction unit comprises
a suction pipe that communicates the inner space of the reburning chamber and the inner space of the main body of the gasification equipment;
a suction fan provided in the suction pipe as the flow rate adjusting unit and capable of adjusting the flow rate of the gas from the main body of the gasification equipment to the reburning chamber;
Incineration facility with The gasification facility according to any one of claims 1 to 4 ;
a reburning chamber for burning the combustion gas generated by the gasification process of the main body of the gasification equipment;
The suction unit comprises
a suction pipe for guiding the gas in the inner space of the main body of the gasification equipment to the reburning chamber by means of a differential pressure between the inner space of the reburning chamber and the inner space of the main body of the gasification equipment;
a variable damper provided in the suction pipe as the flow rate adjusting unit and capable of adjusting the flow rate of the gas flowing from the main body of the gasification equipment to the reburning chamber;
Incineration facility with A gasification method for gasifying a material to be treated that has been input from the upstream side while moving the material to the downstream side by means of a gasification facility that includes at least one gasification facility main body,
The gas in the inner space of the main body of the gasification equipment is sucked from the upstream side of the downstream end of the main body of the gasification equipment on the most upstream side, and the gasification is performed based on the position of the flame in the inner space of the main body of the gasification equipment. A gasification method that increases or decreases the flow rate of the gas sucked from the inner space of the equipment body . 10. The gasification method according to claim 9 , wherein the position of the flame is determined based on an image of the inner space of the gasification equipment body. 10. The gasification method according to claim 9 , wherein the position of the flame is determined based on at least one of the temperature, humidity, and oxygen concentration of the gas sucked from the inner space of the gasification equipment body.

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