Moisture content measurement system

Abstract

To provide a moisture percentage measurement system that can inhibit a measurement result of a moisture percentage of an object from becoming detached from an actual moisture percentage.SOLUTION: A moisture percentage measurement system includes: an irradiation part for irradiating an object supplied as an objected to be burnt into a combustion furnace with an electromagnetic wave; a detector for detecting the penetrating or reflected electromagnetic wave; and an analysis part for acquiring post-correction moisture information of the object on the basis of pre-correction moisture information acquired on the basis of transmission characteristic of the electromagnetic wave detected by the detector and density related information relating to density of the object.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a moisture content measurement system.

Background Art

[0002] In an incineration facility that incinerates incinerable materials in which various components are mixed, in order to stably burn the incinerable materials supplied into the furnace, it is important to grasp the amount of moisture (moisture content) contained in the incinerable materials. Conventionally, the amount of moisture contained in the incinerable materials has depended on the experience and visual judgment of the operator. Therefore, when the incinerable materials are actually supplied into the furnace, if combustion fluctuations different from the prediction occur, adjustment work may be required. Therefore, in measuring the moisture content of the incinerable materials, a technique that is less dependent on the judgment of the operator is required.

[0003] Patent Document 1 discloses a method of irradiating a powdery, granular, or amorphous bar-shaped substance (object) flowing through a processing line with electromagnetic waves of a predetermined frequency, capturing changes in the amplitude and phase of the electromagnetic waves, and measuring the moisture content of the object based on a calibration curve. Patent Document 2 discloses a waste treatment furnace device that calculates the moisture content according to the variety of the object, such as using a capacitance-type measuring instrument for an object with a relatively high moisture content and using a microwave-type measuring instrument for an object with a high proportion of plastic waste.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, the material inside the hopper of an incineration facility is compacted as it moves towards the furnace, which changes the size of the voids inside the material. In other words, the change in void size changes the dielectric constant of the material, which may affect the transmission of electromagnetic waves and microwaves. Therefore, even if the moisture content of the material can be calculated using the techniques described in, for example, Patent Documents 1 and 2, the measurement results may deviate from the actual moisture content because the material is compacted.

[0006] This disclosure was made to solve the above-mentioned problems and aims to provide a moisture content measurement system that can suppress deviations between the measured moisture content of an object and its actual moisture content. [Means for solving the problem]

[0007] To solve the above problems, the moisture content measurement system according to this disclosure comprises: an irradiation unit that irradiates an object supplied as incinerated material into an incinerator with electromagnetic waves; a detection unit that detects the transmitted or reflected electromagnetic waves; and an analysis unit that acquires the corrected moisture content of the object based on uncorrected moisture information obtained based on the transmission characteristics of the electromagnetic waves detected by the detection unit and density-related information relating to the density of the object. The density-related information includes information indicating the consolidation ratio of the object in the incinerator, the density-related information includes information indicating the measured density of the object obtained based on the measured weight and volume of the object and the consolidation ratio in the incinerator, the uncorrected moisture information includes the uncorrected moisture content and uncorrected moisture weight of the object, the analysis unit obtains the estimated density of the object from the uncorrected moisture content, the analysis unit calculates the density ratio by dividing the measured density by the estimated density, the analysis unit calculates the corrected moisture weight by multiplying the uncorrected moisture weight by the density ratio, and the analysis unit obtains the corrected moisture content by dividing the corrected moisture weight by the total weight of the object. . [Effects of the Invention]

[0008] According to this disclosure, it is possible to provide a moisture content measurement system that can suppress deviations between the measured moisture content of an object and its actual moisture content. [Brief explanation of the drawing]

[0009] [Figure 1] This figure shows the configuration of an incineration facility according to the present disclosure. [Figure 2] This is a perspective view showing the schematic configuration of a fuel supply mechanism and moisture content measurement system according to the present disclosure. [Figure 3] This is a functional block diagram showing the configuration of the analysis unit according to the embodiment of this disclosure. [Figure 4] This is a flowchart showing the operation of the analysis unit according to the embodiment of this disclosure. [Figure 5] This is a hardware configuration diagram showing the configuration of a computer according to the embodiments of this disclosure. [Modes for carrying out the invention]

[0010] The configuration of the moisture content measurement system for the incineration equipment according to the embodiment of this disclosure will be described below with reference to the drawings.

[0011] (Incineration equipment) The incineration equipment according to this embodiment is a waste incineration stoker furnace that incinerates waste such as municipal solid waste as the material to be incinerated.

[0012] As shown in Figure 1, the incineration facility 1000 includes an incinerator 1, a waste heat recovery boiler 8, a cooling tower 9, a dust collector 11, an outlet channel 12, a chimney 13, a waste pit 100, and a moisture content measurement system 50.

[0013] (Incinerator) Incinerator 1 is a furnace that burns the material to be incinerated M while transporting it. As the material to be incinerated M burns in incinerator 1, exhaust gas is generated from incinerator 1. This exhaust gas is sent to a heat recovery boiler 8 located above incinerator 1.

[0014] The waste heat recovery boiler 8 generates steam by exchanging heat between the exhaust gas and water to heat the water. This steam is used in equipment (not shown) located outside the incineration facility 1000. After passing through the waste heat recovery boiler 8, the exhaust gas is cooled in the cooling tower 9 and then sent to the dust collector 11. After soot and dust are removed from the exhaust gas in the dust collector 11, it is discharged into the atmosphere through the outlet passage 12 and the chimney 13.

[0015] Incinerator 1 comprises a furnace body 10, a fuel supply mechanism 3, a stoker 6, a wind box 2, a discharge chute 14, a furnace 7, a forced-air fan 15, a primary air line 16, an air preheater 18, and a secondary air line 17.

[0016] (Furnace body) Inside the furnace body 10, a treatment space V for burning the object to be incinerated M is formed. In this treatment space V, the object to be incinerated M is conveyed from one side to the other side in the conveyance direction Da while burning. The incinerated object to be incinerated M is discharged to the outside of the incinerator 1 through the discharge chute 14.

[0017] Hereinafter, the direction from the discharge chute 14 toward the fuel supply mechanism 3 is referred to as "one side of the conveyance direction Da". The direction in which the object to be incinerated M is conveyed opposite to one side of the conveyance direction Da (the direction from the fuel supply mechanism 3 toward the discharge chute 14) is referred to as "the other side of the conveyance direction Da".

[0018] (Fuel supply mechanism) The fuel supply mechanism 3 is a mechanism that receives the object to be incinerated M from the outside of the incinerator 1 and supplies this object to be incinerated M to the treatment space V inside the furnace body 10. As shown in FIG. 2, the fuel supply mechanism 3 in the present embodiment has a hopper 31 and a feeder 40.

[0019] (Hopper) The hopper 31 is an inlet of the incinerator 1 for supplying the object W as the object to be incinerated M into the furnace body 10. The object W is input into the hopper 31 from the outside of the incinerator 1 by a crane 103. The hopper 31 has an inlet portion 32, an outlet portion 33, and a three-dimensional measuring machine 63b.

[0020] The inlet portion 32 is an inlet portion of the hopper 31 for the object W to enter from the outside. The inlet portion 32 guides the object to be incinerated M supplied from the upper side in the vertical direction Dv to the outlet portion 33 on the lower side in the vertical direction Dv. The inlet portion 32 in the present embodiment has a first inlet portion 32a and a second inlet portion 32b.

[0021] The first inlet section 32a has a funnel shape that widens upward in the vertical direction Dv. The end of the first inlet section 32a on the upward side in the vertical direction Dv is an upper opening 320a. As a result, the object W supplied from the crane 103 is guided into the inside of the first inlet section 32a via the upper opening 320a without scattering into the surroundings. The end of the first inlet section 32a on the downward side in the vertical direction Dv is connected to the second inlet section 32b.

[0022] The second inlet section 32b extends from the upper side to the lower side in the vertical direction Dv, and its cross-section in this vertical direction Dv is rectangular and cylindrical. The end of the second inlet section 32b on the upper side in the vertical direction Dv is connected to the first inlet section 32a. The end of the second inlet section 32b on the lower side in the vertical direction Dv is a lower opening 320b. This lower opening 320b is connected to the outlet section 33.

[0023] In this specification, the vertical direction Dv refers to the direction of gravity perpendicular to the transport direction Da (vertical direction Dv in Figures 1 and 2). That is, the material to be incinerated M, which is introduced from the upper opening 320a of the inlet 32, falls downward from the upper side in the vertical direction Dv according to gravity.

[0024] The outlet section 33 is the outlet portion of the hopper 31 for guiding the object W supplied from the inlet section 32 into the processing space V inside the furnace body 10 as incinerated material M. The outlet section 33 has an inner surface that forms a storage space R for temporarily storing the incinerated material M before supplying the object W into the processing space V inside the furnace body 10. In this embodiment, the outlet section 33 has a box shape that extends in the transport direction Da, which is perpendicular to the vertical direction Dv, which is the direction in which the inlet section 32 extends.

[0025] The exit section 33 has a floor section 34, a ceiling section 36, and a side wall section 35. The floor section 34 extends in the transport direction Da and the furnace width direction Dw, and has a floor surface that forms the bottom portion of the inner surface that defines the storage space R. The floor surface extends in the transport direction Da and the furnace width direction Dw.

[0026] The ceiling portion 36 extends in the transport direction Da and the furnace width direction Dw, and has a top surface that forms the ceiling portion of the inner surface defining the storage space R. The top surface faces the floor surface and extends in the transport direction Da and the furnace width direction Dw in a state parallel to the floor surface.

[0027] The side wall portion 35 connects the floor portion 34 and the ceiling portion 36, and also forms the side portion of the outlet portion 33. The side wall portion 35 has two sides facing each other in the furnace width direction Dw and one side facing the other side in the transport direction Da.

[0028] The two opposing sides in the furnace width direction Dw are surfaces that extend in the transport direction Da and the vertical direction Dv, connecting the floor surface and the ceiling surface, and are connected to the lower opening 320b of the second inlet section 32b.

[0029] In this specification, the furnace width direction Dw means a direction perpendicular to the transport direction Da, which is the direction in which the material to be incinerated M moves within the hopper 31, and the vertical direction Dv, which is the direction in which the inlet 32 ​​extends.

[0030] The side facing the other side in the transport direction Da is a surface that connects to the lower opening 320b of the second inlet 32b and to the two aforementioned side surfaces that face each other in the furnace width direction Dw. The side facing the other side in the transport direction Da is located furthest to the side in the transport direction Da among the inner surfaces that form the storage space R.

[0031] A gap is formed between the lower end of the side facing the other side in the transport direction Da and the end of the floor surface on one side in the transport direction Da. A feeder 40 for pushing the material to be incinerated M toward the processing space V is positioned in this gap so as to be able to reciprocate in the transport direction Da.

[0032] The three-dimensional measuring machine 63b is a device for roughly measuring the volume of an object W that is introduced into the inlet 32. For example, the volume of the introduced object W can be roughly measured by using an ultrasonic height meter or a 3D scanner to determine the position of the waste surface relative to a predetermined reference plane. Alternatively, the volume can be roughly measured by attaching a level gauge (not shown) to the hopper 31 and reading the image of the surface position of the object W. The three-dimensional measuring machine 63b is installed in the first inlet 32a of the inlet 32. In this embodiment, the three-dimensional measuring machine 63b is installed, for example, on the inner surface of the first inlet 32a and measures the volume (hereinafter referred to as the measured volume) of an object W that has fallen from the upper side to the lower side in the vertical direction Dv within the first inlet 32a. The three-dimensional measuring machine 63b transmits the acquired data of this measured volume to the moisture content measuring system 50 installed outside the waste pit 100.

[0033] (feeder) The feeder 40 is a device that supplies the object W, which has been fed into the hopper 31, to the processing space V inside the furnace body 10. The feeder 40 is positioned on the inner surface of the outlet 33 so as to be able to reciprocate in the transport direction Da relative to the floor surface. One end of the feeder 40 on the transport direction Da side is connected to a feeder drive mechanism (not shown) that moves the feeder 40 back and forth by hydraulics or the like. The feeder 40 is able to reciprocate in the transport direction Da within the storage space R by this feeder drive mechanism.

[0034] In this embodiment, the feeder 40 is plate-shaped, extending in the conveying direction Da and the furnace width direction Dw, and having a predetermined thickness. The feeder 40 has an upper surface 40a facing upward in the vertical direction Dv, and an extrusion surface 40b connected to this upper surface 40a and facing the other side in the conveying direction Da.

[0035] The upper surface 40a is the surface on which the material W supplied from the inlet 32 ​​accumulates. The extrusion surface 40b is the surface for pushing the material W accumulated on the floor surface to the other side in the transport direction Da. That is, the feeder 40 intermittently pushes the material M to be incinerated in the storage space R toward the processing space V by reciprocating in the transport direction Da at predetermined timings.

[0036] In this embodiment, the object W is compacted within the storage space R. The object W within the storage space R is viscous and can be considered as a single continuous body that moves as one unit in the transport direction Da within the storage space R. In other words, the object W on the upper surface 40a and the object W on the floor surface are integrated within the storage space R. Therefore, when the extrusion surface 40b of the feeder 40 pushes the object W towards the processing space V, the object W accumulated on the upper surface 40a also moves toward the processing space V in conjunction.

[0037] (Stalker) The stoker 6 shown in Figure 1 is composed of multiple grates (not shown), which form a stoker surface 6a to which the material W is supplied in layers as the material to be incinerated M by the fuel supply mechanism 3. The grates consist of a fixed grate (not shown) and a movable grate (not shown).

[0038] The fixed grate is fixed to the surface of the windbox 2 facing upward in the vertical direction Dv. The movable grate moves at a constant speed in one direction Da (upstream) and the other direction Da (downstream), thereby agitating and mixing the material to be incinerated M on the movable and fixed grates (on the stoker surface 6a) as it is transported downstream. The stoker 6 burns the material to be incinerated M supplied in layers on the stoker surface 6a and transports it toward the discharge chute 14.

[0039] The furnace body 10 has, in order from one side in the conveying direction Da, a drying stage 21, a combustion stage 22, and a post-combustion stage 23. The drying stage 21, combustion stage 22, and post-combustion stage 23 divide the processing space V in the conveying direction Da. The drying stage 21 is a region for drying the material to be incinerated M supplied from the hopper 31 on the stoker 6 prior to combustion.

[0040] The combustion stage 22 and the post-combustion stage 23 are regions for burning the dry material M on the stoker 6. In the combustion stage 22, diffusion combustion occurs due to the pyrolysis gas generated from the material M, producing a bright flame F. In the post-combustion stage 23, combustion of fixed carbon occurs after the diffusion combustion of the material M, so no bright flame F is produced. Therefore, the bright flame F produced during combustion is mainly formed in the combustion stage 22.

[0041] (Wind box) The airbox 2 supplies combustion air from below the stoker 6 toward the processing space V. Multiple airboxes 2 are arranged in the conveying direction Da. In this embodiment, the drying stage 21, the combustion stage 22, and the post-combustion stage 23 are partitioned by the airboxes 2.

[0042] (Discharge chute) The discharge chute 14 is a device for dropping the incinerated material M, which has been reduced to ash after combustion, into an ash extrusion device or the like (not shown) located vertically Dv below the furnace body 10. The discharge chute 14 is provided at the end of the post-combustion stage 23 on the other side in the transport direction Da.

[0043] (furnace) The furnace 7 extends upward in the vertical direction Dv from the top of the furnace body 10. The exhaust gas generated by the combustion of the material to be incinerated M in the processing space V is sent through the furnace 7 to the waste heat recovery boiler 8.

[0044] (Forced air blower) The forced-air blower 15 is a device that pressurizes and pumps air into the furnace body 10 to burn the material to be incinerated M. The forced-air blower 15 has a first forced-air blower 15a and a second forced-air blower 15b. The first forced-air blower 15a pressurizes and pumps combustion air towards the wind box 2 through the primary air line 16. The second forced-air blower 15b pressurizes and pumps combustion air towards the furnace 7 through the secondary air line 17.

[0045] (Primary air line) The primary air line 16 connects the first forced-air blower 15a and the wind box 2. When the first forced-air blower 15a is driven, the air (primary air) necessary for the combustion of the material to be incinerated M is supplied to the wind box 2 through the primary air line 16. The primary air line 16 has a primary air damper 16a. The primary air damper 16a is installed in the middle of the primary air line 16 and regulates the flow rate of primary air in the primary air line 16 by the opening of the damper 16a.

[0046] (Air preheater) The air preheater 18 is a heat exchanger that preheats the air supplied under pressure from the first forced-air blower 15a. The air preheater 18 is located midway through the primary air line 16 and preheats the air flowing from the first forced-air blower 15a toward the wind box 2.

[0047] (Secondary air line) The secondary air line 17 connects the second forced-air blower 15b and the furnace 7. When the second forced-air blower 15b is driven, the air necessary for the combustion of the material to be incinerated (secondary air) is supplied into the furnace 7 through the secondary air line 17. The secondary air supplied into the furnace 7 is directed towards the material to be incinerated M from above the stoker 6. The secondary air line 17 has a secondary air damper 17a. The secondary air damper 17a is installed in the middle of the secondary air line 17 and regulates the flow rate of the secondary air by the opening of the damper 17a.

[0048] (garbage pit) The waste pit 100 stores the waste W and supplies it to the fuel supply mechanism 3. The waste pit 100 includes a waste pit body 101, a platform 102, a crane 103, and a crane control device 107.

[0049] The waste pit body 101 is a chamber for storing the waste W on one side of the transport direction Da from the incinerator 1. The waste pit body 101 is connected to the upper opening 320a of the first inlet 32a at the inlet 32 ​​of the hopper 31. In other words, the inside of the hopper 31 and the inside of the waste pit body 101 are in communication, and the waste W can be supplied from the inside of the waste pit body 101 to the inside of the hopper 31.

[0050] Platform 102 is an entrance for transporting the object W into the waste pit body 101. Platform 102 is connected to an opening for loading that is formed on one side of the waste pit body 101 in the transport direction Da. A garbage truck T loads waste onto platform 102 from outside the incineration facility 1000. The garbage truck T loads the waste, which is the object W it has loaded, into the waste pit body 101.

[0051] The crane 103 grasps a portion of the object W stored in the waste pit body 101 and transfers the grasped object W from the waste pit body 101 to the inlet 32 ​​of the hopper 31 for supply. The crane 103 is installed on the ceiling portion on the upper side Dv in the vertical direction of the waste pit body 101.

[0052] The crane 103 includes a rail 131 installed on the ceiling, a girder 132 that runs along the rail 131, a trolley 133 that traverses the girder 132, a wire 134 suspended from the trolley 133, a hoisting machine 135 that raises and lowers the wire 134, and a grapple 136 attached to the end of the wire 134.

[0053] As shown in Figure 2, the grapple 136 has a base 136a connected to one end of the wire 134, a plurality of claw portions 136b extending from the base 136a and gripping the object W, and a load cell 63a provided on the base 136a.

[0054] The load cell 63a is a sensor that acquires the weight of an object W (hereinafter referred to as the actual weight) when the multiple claw portions 136b grip the object W. The load cell 63a transmits the acquired actual weight data to a moisture content measurement system 50 located outside the waste pit 100.

[0055] The crane control device 107 is a device that controls the movement of the girder 132, the traversal of the trolley 133, the raising and lowering of the wire 134 by the hoisting machine 135, and the gripping operation of the grapple 136.

[0056] (Moisture content measurement system) The moisture content measuring system 50 is a system for measuring the moisture content of the material to be incinerated M supplied into the hopper 31. The moisture content measurement system 50 comprises an irradiation unit 51, a detection unit 52, and an analysis unit 53.

[0057] (Irradiation area) The irradiation unit 51 is a device that irradiates an object W in the storage space R with electromagnetic waves of a frequency belonging to a specific frequency band. The irradiation unit 51 is provided on the side surface (inner wall surface) of the side wall 35 on one side in the furnace width direction Dw of the outlet 33 of the hopper 31. More specifically, the irradiation unit 51 is provided on the side surface of the second inlet 32b on one side in the furnace width direction Dw. Preferably, the irradiation unit 51 is provided at an intermediate position in the vertical direction Dv on the side surface of the second inlet 32b on one side in the furnace width direction Dw. The irradiation unit 51 irradiates electromagnetic waves from the side surface of the second inlet 32b located on one side in the furnace width direction Dw toward the side surface of the second inlet 32b located on the other side in the furnace width direction Dw. In this embodiment, the frequency of the electromagnetic waves irradiated by the irradiation unit 51 belongs to the frequency band of 100 MHz to 1 GHz.

[0058] (Detection unit) The detection unit 52 is an antenna for receiving electromagnetic waves irradiated from the irradiation unit 51 and transmitted through or reflected from the object W. The detection unit 52 is, for example, located on the side of the second inlet 32b of the hopper 31 that is on the other side in the furnace width direction Dw, and faces the irradiation unit 51 in the furnace width direction Dw. The detection unit 52 converts the analog signal indicating the transmission characteristics of the received electromagnetic waves into a digital signal and transmits this digital signal to the analysis unit 53. The transmission characteristics of the electromagnetic waves received by the detection unit 52 include information on changes in amplitude and phase. The detection unit 52 and the analysis unit 53 are connected by wire or wireless.

[0059] (Analysis Department) The analysis unit 53 is a device that receives a digital signal indicating the transmission characteristics of electromagnetic waves transmitted from the detection unit 52 and measures the moisture content of the object W based on this digital signal. As shown in Figure 3, the analysis unit 53 includes a pre-correction moisture information acquisition unit 61, a density-related information acquisition unit 62, and a post-correction moisture information acquisition unit 63.

[0060] (Moisture information acquisition unit before correction) The pre-correction moisture information acquisition unit 61 acquires pre-correction moisture information of the object W in the storage space R. The pre-correction moisture information includes the pre-correction moisture content (pre-correction moisture content) and moisture weight (pre-correction moisture weight) of the object W. In this embodiment, the pre-correction moisture content and moisture weight of the object W are determined, for example, based on the transmission characteristics of the electromagnetic waves received from the detection unit 52 and a predetermined calibration curve. The calibration curve shows the correspondence between the transmission characteristics of the electromagnetic waves irradiated by the irradiation unit 51 and the pre-correction moisture content of the object W, and the correspondence between the transmission characteristics of the electromagnetic waves irradiated by the irradiation unit 51 and the pre-correction moisture weight of the object W.

[0061] (Density-related information acquisition unit) The density-related information acquisition unit 62 acquires density-related information regarding the density of the object W within the storage space R. The following describes the process by which the density-related information acquisition unit 62 acquires density-related information.

[0062] The density-related information acquisition unit 62 pre-stores the consolidation ratio of the object W in the hopper 31 as density-related information, and also acquires the measured weight and measured volume of the object W as density-related information.

[0063] The consolidation ratio is the ratio of the density per unit volume of the object W after it has been consolidated inside the outlet section 33 (storage space R) to the density per unit volume of the object W immediately after it has been introduced into the first inlet section 32a of the hopper 31.

[0064] The method for calculating the consolidation ratio of the object W in this embodiment will be described below. First, at the same time that the object W is fed from the crane 103 into the inlet 32, a marker object is simultaneously supplied to the inlet 32, and the time of supply (hereinafter referred to as the supply time) is acquired. The feeder 40 intermittently pushes the object W towards the processing space V at a constant speed and period, causing this marker object to move through the hopper 31 toward the processing space V.

[0065] Next, it is confirmed that this marker object has been exposed into the processing space V from the outlet 33, and at the same time, the time of exposure (hereinafter referred to as the exposure time) is obtained. In this embodiment, in order to confirm that this marker object has been exposed into the processing space V, for example, a camera (not shown) that can capture the entire connection portion between the outlet 33 of the hopper 31 and the furnace body 10 from the other side in the conveying direction Da may be provided inside the furnace body 10.

[0066] Next, by obtaining the difference between the exposure time and the supply time, the time required for the marker object to move inside the hopper 31 is obtained. Finally, the consolidation ratio is calculated by dividing the time it took for the marker object to move inside the hopper 31 by a predetermined reference time. The consolidation ratio is obtained as a value greater than 1.

[0067] It is known that when the object W is compacted inside the hopper 31, it takes longer to move within the hopper 31 compared to when it is not compacted. In other words, the compaction ratio of the object W can be obtained by utilizing the time required for a marker object to move within the hopper 31. The marker object is one that is highly visible and resistant to damage. The compaction ratio of the object W is periodically obtained by the operator at predetermined intervals, and the obtained compaction ratio is stored in the density-related information acquisition unit 62.

[0068] The density-related information acquisition unit 62 acquires the actual weight of the object W measured by the load cell 63a of the grapple 136 of the crane 103 and the actual volume of the object W measured by the three-dimensional measuring machine 63b of the hopper 31 via wired or wireless connection. Based on the acquired actual weight and volume of the object W, the density-related information acquisition unit 62 acquires the density of the object W (hereinafter referred to as the uncorrected density). That is, the density-related information acquisition unit 62 acquires the uncorrected density by dividing the actual weight by the actual volume.

[0069] The density-related information acquisition unit 62 acquires the density (hereinafter referred to as the measured density) by reflecting the consolidation ratio in the acquired uncorrected density. Specifically, the density-related information acquisition unit 62 acquires the measured density by dividing the uncorrected density by the consolidation ratio.

[0070] (Moisture information acquisition unit after correction) The corrected moisture content acquisition unit 63 acquires the corrected moisture content of the object W based on the uncorrected moisture content and density-related information. The corrected moisture content acquisition unit 63 has in advance stored a calibration curve that shows the correspondence between the moisture content of the calibration curve measured in the hopper 31 and the density of the object W. Based on this calibration curve, the corrected moisture content acquisition unit 63 acquires the density of the object W (hereinafter referred to as the estimated density) from the uncorrected moisture content acquired by the uncorrected moisture content acquisition unit 61.

[0071] The corrected moisture content acquisition unit 63 obtains the corrected moisture content from the estimated density, the measured density acquired by the density-related information acquisition unit 62, and the uncorrected moisture content weight acquired by the uncorrected moisture content acquisition unit 61.

[0072] Specifically, the corrected moisture information acquisition unit 63 calculates the density ratio by dividing the measured density by the estimated density, and then calculates the corrected moisture weight of the object W by multiplying the uncorrected moisture weight by this density ratio. The corrected moisture content information acquisition unit obtains the corrected moisture content by dividing this corrected moisture weight by the total weight of the object W.

[0073] In this embodiment, the total weight of the object W refers to the total weight of the object W inside the hopper 31, and is obtained, for example, by subtracting the weight of the object W supplied from the hopper 31 into the processing space V from the cumulative actual weight measured by the load cell 63a.

[0074] The corrected moisture content obtained by the corrected moisture content acquisition unit 63 in this embodiment can be used as a factor for controlling the operation of the incineration equipment 1000. For example, the rotational speed of the first forced-air blower 15a and the second forced-air blower 15b, the opening degree of the primary air damper 16a and the secondary air damper 17a, the set temperature of the air preheater 18, the control of the feeder 40 (movement speed and reciprocating frequency of the feeder 40), the movement speed of the movable grate of the stoker 6, etc., can be determined based on the corrected moisture content.

[0075] (Operation of the analysis unit) Next, the operation of the analysis unit 53 will be explained with reference to Figure 4.

[0076] The pre-correction moisture information acquisition unit 61 acquires the pre-correction moisture content and pre-correction moisture weight of the object W (step S1). The density-related information acquisition unit 62 acquires the measured weight and volume, and also acquires the measured density from these measured weight and volume and the stored consolidation ratio (step S2).

[0077] The corrected moisture information acquisition unit 63 acquires the estimated density based on the uncorrected moisture content acquired by the uncorrected moisture information acquisition unit 61 (step S3).

[0078] The corrected moisture information acquisition unit 63 acquires the corrected moisture content from the estimated density, measured density, and pre-correction moisture weight (step S4). The analysis unit 53 repeats the above series of operations while the incineration equipment 1000 is in operation.

[0079] (Effects and Benefits) In the moisture content measurement system 50 according to the above embodiment, the corrected moisture content of the object W is obtained based on uncorrected moisture information obtained based on the transmission characteristics of electromagnetic waves and density-related information regarding the density of the object W. That is, by using density-related information, it is possible to correct for the effect on the transmission characteristics of electromagnetic waves caused by changes in the density of the object W. Therefore, it is possible to suppress deviations between the measured moisture content of the object W and the actual moisture content.

[0080] Furthermore, in the moisture content measurement system 50 according to the above embodiment, density-related information includes information indicating the consolidation ratio of the object W. In other words, by reflecting information indicating how much the object W has been consolidated from its state before consolidation, it is possible to correct the influence on the electromagnetic wave transmission characteristics according to the degree of consolidation (consolidation ratio). Therefore, the above effect can be realized with a more specific configuration.

[0081] Furthermore, in the moisture content measurement system 50 according to the above embodiment, density-related information includes information indicating the measured density of the object W, which is obtained based on the measured weight and volume of the object W and the consolidation ratio of the object W. That is, the influence on the transmission characteristics of electromagnetic waves can be corrected based on the actual density obtained from the measured weight and volume of the object W and the degree of consolidation (consolidation ratio). Therefore, the above effect can be realized with a more specific configuration.

[0082] (Other embodiments) Although embodiments of this disclosure have been described in detail above with reference to the drawings, the specific configurations are not limited to those of each embodiment, and additions, omissions, substitutions, and other modifications to the configurations are possible without departing from the gist of this disclosure.

[0083] Figure 5 is a hardware configuration diagram showing the configuration of the computer 1100 according to this embodiment. Computer 1100 includes a processor 1110, main memory 1120, storage 1130, and interface 1140.

[0084] The analysis unit 53 described above is implemented in the computer 1100. The operation of each processing unit described above is stored in the storage 1130 in the form of a program. The processor 1110 reads the program from the storage 1130, loads it into the main memory 1120, and executes the above processing according to the program. The processor 1110 also allocates memory areas in the main memory 1120 corresponding to each of the storage units described above, according to the program.

[0085] The program may be for the purpose of realizing some of the functions that the computer 1100 is to perform. For example, the program may perform functions in combination with other programs already stored in the storage 1130, or in combination with other programs implemented in other devices. In addition, the computer 1100 may be equipped with a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, some or all of the functions realized by the processor 1110 may be realized by the integrated circuit.

[0086] Examples of storage 1130 include magnetic disks, magneto-optical disks, and semiconductor memory. Storage 1130 may be an internal medium directly connected to the bus of computer 1100, or an external medium connected to computer 1100 via interface 1140 or a communication line. Furthermore, if this program is distributed to computer 1100 via a communication line, computer 1100 that receives the distribution may expand the program into main memory 1120 and execute the above processing. In the above embodiment, storage 1130 is a tangible storage medium that is not temporary.

[0087] Furthermore, the program may be intended to implement some of the functions described above. Furthermore, the program may be a so-called differential file (differential program) that implements the aforementioned functions in combination with other programs already stored in the storage 1130.

[0088] In this embodiment, the top surface of the ceiling section 36 is described as being parallel to the floor surface of the floor section 34 and extending in the transport direction Da and the furnace width direction Dw. However, the top surface does not have to be parallel to the floor surface. The top surface may be slightly inclined with respect to the floor surface.

[0089] Furthermore, although the incineration equipment 1000 is a waste incineration stoker furnace in this embodiment, it is not limited to a waste incineration stoker furnace. The incineration equipment 1000 may be a kiln stoker furnace, a biomass fluidized bed boiler, a sludge incinerator, or the like.

[0090] <Note> The moisture content measurement system described in the embodiment can be understood, for example, as follows:

[0091] (1) The moisture content measurement system 50 according to the first embodiment comprises an irradiation unit 51 that irradiates an object W supplied as incinerated material M into the incinerator 1 with electromagnetic waves, a detection unit 52 that detects the transmitted or reflected electromagnetic waves, and analysis units 53, 53a, 53b that acquire the corrected moisture content of the object W based on uncorrected moisture information obtained based on the transmission characteristics of the electromagnetic waves detected by the detection unit 52 and density-related information regarding the density of the object W.

[0092] This allows us to obtain a corrected moisture content using density-related information, thereby correcting the effect of changes in the density of the object W on the transmission characteristics of electromagnetic waves.

[0093] (2) The moisture content measuring system 50 according to the second embodiment is the moisture content measuring system 50 of (1), wherein the density-related information may include information indicating the consolidation ratio of the object W in the incinerator 1.

[0094] This makes it possible to compensate for the influence of the degree of compaction (compression ratio) on the transmission characteristics of electromagnetic waves.

[0095] (3) The moisture content measuring system 50 according to the third embodiment is the moisture content measuring system 50 of (1) or (2), wherein the density-related information may include information indicating the measured density of the object W, which is obtained based on the measured weight and volume of the object W and the consolidation ratio of the object W in the incinerator 1.

[0096] This allows for correction of the influence on electromagnetic wave transmission characteristics based on the actual density obtained from the measured weight and volume of the object W, and the degree of consolidation (consolidation ratio). [Explanation of Symbols]

[0097] 1000... Incineration equipment 1... Incinerator 2... Wind box 3... Fuel supply mechanism 6... Stoker 6a... Stoker surface 7... Furnace 8... Waste heat recovery boiler 9... Cooling tower 10... Furnace body 11... Dust collector 12... Outlet flow path 13... Chimney 14... Discharge chute 15... Forced blower 15a... First forced blower 15b... Second forced blower 16... Primary air line 16 16a... Primary air damper 17... Secondary air line 17 17a... Secondary air damper 18... Air preheater 21... Drying stage 22... Combustion stage 23... Post-combustion stage 31... Hopper 32... Inlet 32a... First inlet 32b... Second inlet 33... Outlet 34... Floor 35... Side wall 36... Ceiling 40... Feeder 40a…Top surface 40b…Extrusion surface 50…Moisture content measurement system 51…Irradiation unit 52…Detection unit 53…Analysis unit 61…Moisture information acquisition unit before correction 62…Density-related information acquisition unit 63…Moisture information acquisition unit after correction 63a…Load cell 63b…Three-dimensional measuring machine 100…Waste pit 101…Waste pit body 102…Platform 103…Crane 107…Crane control device 131…Rail 132…Girder 133…Trolley 134…Wire 135…Hoisting machine 136…Grapple 136a…Base 136b…Claw part 320a…Upper opening 320b…Lower opening 1100…Computer 1110…Processor 1120…Main memory 1130…Storage 1140…Interface Da…Conveying direction Dv…Up and down direction Dw…Furnace width direction F...Bright flame M...Material to be incinerated P...Straight line R...Storage space T...Garbage truck V...Processing space W...Target object

Claims

1. An irradiation unit that irradiates electromagnetic waves onto the object supplied to be incinerated inside the incinerator, A detection unit for detecting the transmitted or reflected electromagnetic waves, An analysis unit that acquires the corrected moisture content of an object based on uncorrected moisture information obtained based on the transmission characteristics of the electromagnetic waves detected by the detection unit and density-related information regarding the density of the object, Equipped with, The density-related information includes information indicating the consolidation ratio of the object in the incinerator. The density-related information includes information indicating the measured density of the object, which is obtained based on the measured weight and volume of the object and the consolidation ratio in the incinerator. The pre-correction moisture information includes the pre-correction moisture content and pre-correction moisture weight of the object. The analysis unit obtains the estimated density of the object from the pre-corrected moisture content, The analysis unit calculates the density ratio by dividing the measured density by the estimated density. The analysis unit calculates the corrected water weight by multiplying the water weight before correction by the density ratio. The analysis unit obtains the corrected moisture content by dividing the corrected moisture weight by the total weight of the object. Moisture content measurement system.

2. The moisture content measurement system according to Claim 1, wherein the analysis unit corrects the influence on the transmission characteristics of electromagnetic waves based on the density-related information, the actual density of the object obtained from the measured weight and volume of the object, and the consolidation ratio.

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