JP2020106201A - Combined treatment facilities - Google Patents

Abstract

To provide a combined treatment facilities comprising an incineration facility capable of power generation and a crush facility, which can prevent power consumption from exceeding a generation power amount.SOLUTION: The combined treatment facilities comprise: the incineration facility including an incineration furnace and a generator; the crush facility including a crusher and a supply device for supplying second-class waste to the crusher; a power consumption measuring instrument for measuring power consumption that is power amounts to be consumed in the incineration facility and the crush facility; a generation power amount measuring instrument for measuring a generation power amount that is a power amount generated by the generator; and a control device. The incineration facility and the crush facility are configured operable by power generated by the generator. The control device calculates a surplus power amount by subtracting the power consumption from the generation power amount and controls the supply device in such a manner that a supply speed of supplying the second-class waste to the crusher is made low in a case that the surplus power amount becomes equal to or less than a predetermined first threshold.SELECTED DRAWING: Figure 4

Description

The present invention relates to a combined treatment facility equipped with an incineration facility and a crushing facility for treating waste.

As a waste treatment facility, there are an incinerator equipped with an incinerator for incinerating the waste, and a crushing facility for crushing the waste to recover the resource from the waste. In order to make the electric power consumed in the incineration facility and the crushing facility and the facility space efficient, a composite treatment facility including all of these facilities is known.

Some incinerators are equipped with a generator and use the steam generated by the exhaust heat generated when incinerating the waste treated in the incinerator (hereinafter referred to as the first-class waste) to generate electricity. is there. In a complex treatment facility equipped with such an incinerator, each facility is operated using electric power generated by a generator of the incinerator.

Further, Patent Document 1 below discloses that electric power generated by a power generation facility is supplied to a plurality of facilities in a complex processing facility including a plurality of facilities including a power generation facility. More specifically, in Patent Document 1 below, a solid fuel conversion system for generating solid fuel from combustible waste, a power generation system for generating power by energy generated from a boiler burning the solid fuel, and solid fuel conversion In the combustible waste treatment integrated system equipped with an ash melting treatment system for treating unsuitable fuel generated from the system and treating ash generated from the power generation system, the electric power generated by the power generation system is solid It is disclosed to be supplied to a fueling system and a power generation system.

Similar to such a configuration, in a complex treatment facility including an incineration facility and a crushing facility capable of generating power, the power of the complex treatment facility is covered by the power generated by the generator of the incinerator facility. When the amount of power consumed in the complex processing facility is less than the amount of power generated by the generator, the surplus power can be sold to the outside. On the other hand, when the amount of electric power consumed in the complex treatment facility is larger than the amount of electric power generated by the generator, it is necessary to purchase electricity from the outside. Therefore, it is desired that the amount of electric power generated by the generator be as large as possible or more than the amount of electric power consumed in the combined treatment facility.

JP, 9-72521, A

However, the amount of electric power generated by the generator changes according to the supply amount (per unit time) of the first-class waste to be processed. When there are multiple incinerators (for example, two) installed in the incinerator, some of the incinerators may be stopped if the supply amount of the first-class waste is below a predetermined level. Conceivable. In addition, some of the plurality of incinerators may be stopped in order to maintain the incinerator while continuously performing the incineration process. If some incinerators are shut down, the amount of power generated by the generator will be reduced accordingly.

Further, in the conventional combined treatment facility, the incineration facility and the crushing facility are operated as independent systems. For example, the incineration facility and the crushing facility are installed in different buildings, and the workers engaged in each facility are also individually assigned. Therefore, in the conventional combined treatment facility, it is difficult to automatically adjust the amount of electric power consumed in the entire combined treatment facility according to the amount of electric power generated by the generator of the incineration facility.

Under the present circumstances, when the amount of electricity generated by the generator of the incinerator is low, the crusher's worker is verbally informed so that the crusher's worker can reduce the power consumption of the crusher. Is adjusted to. However, in such a mode, there is a possibility that unintended power purchase may occur due to the adjustment in the crushing equipment not being in time, or the adjustment amount not being in good agreement with the amount of decrease in the generated power amount.

Therefore, an object of the present invention is to provide a combined treatment facility including an incineration facility capable of generating power and a crushing facility, which can suppress the power consumption amount from exceeding the generated power amount. To do.

In order to solve the above-mentioned problems, a combined treatment facility according to an aspect of the present invention provides an incinerator for incinerating a first-class waste and an incinerator for incinerating the first-class waste in the incinerator. An incinerator equipped with a generator that generates electric power using the steam generated by the generated exhaust heat, and for crushing the second-class waste in order to recover the resource from the second-class waste Crushing equipment provided with a crusher and a supply device for supplying the second type waste to the crusher, and consumption for measuring the amount of electric power consumed in the incinerator and the crushing equipment A power amount measuring device, a power generation amount measuring device for measuring a generated power amount that is the amount of power generated by the generator, and a control device, and the incineration facility and the crushing facility are the generators. The control device is configured to be operable by generated electric power, and the control device calculates a surplus power amount by subtracting the power consumption amount from the generated power amount, and the surplus power amount is equal to or less than a predetermined first threshold value. In this case, the supply device is controlled so that the supply speed for supplying the second type waste to the crusher is slow.

According to the above configuration, the surplus power amount is calculated by subtracting the power amount (power consumption amount) consumed in the complex processing facility from the power amount (power generation amount) generated by the generator. When this surplus power amount becomes equal to or lower than the predetermined first threshold value, the supply speed of the second-class waste supplied to the crusher of the crushing facility becomes slow. As a result, the processing load on the crusher is reduced, and the amount of power consumed by the crusher is reduced. In this way, when the amount of surplus power decreases to a certain extent, the combined power processing facility automatically reduces the processing load of the crusher, which has relatively large power fluctuations, so that the power consumption exceeds the power generation amount. Can be suppressed.

The control device controls the supply device so that the supply speed becomes a second speed lower than a predetermined first speed when the surplus power amount is equal to or less than the first threshold value, and the surplus power is controlled. Even if the supply device is controlled so that the supply speed becomes a third speed lower than the second speed when the amount of electric power becomes equal to or less than a predetermined second threshold value smaller than the first threshold value. Good. According to this, it is possible to reduce the processing load of the crusher step by step as the surplus power amount decreases, and to ensure that the power consumption exceeds the power generation amount while maximizing the processing capacity of the crushing equipment. Can be suppressed.

The control device continues the control for slowing down the supply speed until the surplus power amount becomes equal to or lower than the first threshold value and becomes higher than the first threshold value again, and the surplus power amount is set. The control for slowing down the supply speed may be canceled when the state where is larger than the first threshold value continues for a predetermined time. According to this, after the surplus power amount becomes equal to or less than the first threshold value, the supply rate does not return to the original value until the state of being larger than the first threshold value continues for a predetermined time again. By returning the supply speed to the original value after the power generation amount exceeds the power consumption amount has stabilized, the power consumption amount exceeds the generated power amount due to the increase in the power consumption amount due to the restoration of the supply speed. It is possible to prevent the situation. This can prevent the supply rate from changing frequently.

The crusher includes a first crusher and a second crusher, and the supply device includes a first supply device for supplying the second type waste to the first crusher and a second crusher. And a second supply device for supplying the second type waste crushed by the first crusher, and the control device controls when the surplus power amount is equal to or less than the first threshold value. The supply speed of at least one of the first supply device and the second supply device may be controlled to be slow.

The incineration facility may include a plurality of the incinerators, and the number of the incinerators used for incinerating the first type waste may be changed according to the amount of the first type waste. According to this, even if some incinerators out of multiple incinerators are stopped due to changes in the amount of Type 1 waste to be incinerated in maintenance or incineration facilities, the combined treatment facility will continue to operate. However, by generating power, it is possible to prevent the power consumption from exceeding the power generation. Therefore, it is possible to flexibly operate the complex processing facility.

The incineration facility may be configured to be able to transmit surplus power of the power generated by the generator to the outside of the complex treatment facility. As a result, surplus power can be sold, and the complex processing facility can be operated efficiently.

ADVANTAGE OF THE INVENTION According to this invention, in a complex treatment facility provided with the incineration facility and the crushing facility which can generate electric power, it can suppress that power consumption exceeds the power generation.

It is a block diagram which shows schematic structure of the composite processing facility which concerns on one embodiment of this invention. FIG. 2 is a schematic configuration diagram showing an example of the incineration facility in FIG. FIG. 3 is a schematic configuration diagram showing an example of the crushing equipment in FIG. FIG. 4 is a graph showing an example of the temporal change of the surplus power amount and the temporal change of the supply speed controlled accordingly in the present embodiment.

Hereinafter, a composite processing facility according to an embodiment of the present invention will be described. FIG. 1 is a block diagram showing a schematic configuration of a complex processing facility according to an embodiment of the present invention. As shown in FIG. 1, the composite processing facility 1 according to the present embodiment includes an incineration facility 2 and a crushing facility 3.

The incineration facility 2 includes at least one incinerator 21 for incinerating the first-class waste. In the present embodiment, two incinerators (first incinerator 21a and second incinerator 21b) are provided. In the present embodiment, the first-class waste means, for example, combustible waste and the like that is the target of incineration processing in the incinerator 21.

Furthermore, the incineration facility 2 includes a generator 22 that generates electric power using steam generated by exhaust heat generated when incinerating the first-class waste in the incinerator 21. Although one generator 22 is provided in the present embodiment, a plurality of generators may be provided.

FIG. 2 is a schematic configuration diagram showing an example of the incineration facility in FIG. Only one incinerator 21 is shown in FIG. The incinerator 2 is an incinerator 21 having a furnace chamber 203 for incinerating waste using oxygen-containing gas, and a steam recovery device that recovers exhaust heat as steam from incinerator exhaust gas discharged from the incinerator 21. A boiler 204. A hopper 205 and a dust feeder 206 are arranged on the side of the incinerator 21 opposite to the boiler 204, and an exhaust path 207 for exhaust gas extends from the boiler 204 to a chimney 208. Although not shown, the exhaust path 207 is provided with an economizer, a temperature reducing tower, a dust collector, and a blower in order from the upstream side.

A storage tank (waste pit) 209 is provided on the side of the hopper 205 opposite to the furnace chamber 203 for temporarily storing the first-class waste to be put into the incinerator 21. A crane 210 is provided above the storage tank 209. The waste stored in the storage tank 209 is loaded into the hopper 205 by the crane 210. The dust feeder 206 intermittently operates at a predetermined interval (for example, at intervals of 0.5 to 3 minutes) to send the waste put into the hopper 205 into the furnace chamber 203 of the incinerator 21.

The incinerator 21 has a stoker provided below the furnace chamber 203. The stalker functions as a waste transportation means. The stoker has a dry stoker 211, a combustion stoker 212, and a post-combustion stoker 213 in order from the side closer to the dust feeder 206. That is, these stokers 211 to 213 are arranged in the waste moving direction. Below the drying, burning and post-combustion stokers 211 to 213, air boxes 214 to 216 are provided, respectively. Further, the incinerator 21 has a re-combustion chamber 217 that is continuous with the furnace chamber 203 between the furnace chamber 203 and the boiler 204. Although the combustion stoker 212 has one stage in the example of FIG. 2, it may have two or more stages. The drying, burning, and post-combustion stokers 211 to 213 operate intermittently at intervals different from each other, for example.

In the furnace chamber 203, combustion gas is generated by thermal decomposition and partial oxidation reaction of waste, and this combustion gas is burned together with the waste. The re-combustion chamber 217 is for completely burning the combustion gas flowing out of the furnace chamber 203. The ash after burning the waste is discharged from a discharge port 218 provided adjacent to the post-combustion stoker 213.

In the boiler 204, steam is generated by the exhaust gas (exhaust heat) discharged from the incinerator 21. More specifically, as shown in FIG. 2, the boiler 204 includes a radiant chamber 219 arranged above the reburning chamber 217, a first flue 220 through which the radiant chamber 219 communicates with the upper part, and a first flue. 220 and the 2nd flue 221 which a lower part communicates with each other. The steam generated from the exhaust heat in the boiler 204 is sent to the turbine 222 connected to the generator 22 and used for power generation. Most of the exhaust gas that has passed through the boiler 204 flows through the exhaust path 207 and then is discharged from the chimney 208 into the atmosphere.

The incineration facility 2 includes a first controller 24 that controls each device 2a of the incinerator 2 including the incinerator 21 and the generator 22. The first control device 24 is composed of one or a plurality of control devices arranged in a central control room or the like of the incineration facility 2. The first control device 24 includes a calculation unit, a storage unit, a communication unit, and the like (all not shown), and inputs a detection value from a sensor or the like (not shown) provided in each device 2a of the incineration facility 2. Then, a control signal is output to each device 2a of the incinerator 2 based on the detected value or the operation command input by the worker.

The crushing facility 3 is configured as a facility for performing a crushing process and a sorting process for recovering a resource material from the second-class waste. The crushing equipment 3 includes at least one crusher 31 for crushing the second type waste, and a supply device 32 for supplying the second type waste to the crusher 31. In the present embodiment, the type 2 waste refers to waste that is subject to crushing processing in the crusher 31, such as combustible bulky waste, non-combustible bulky waste, and incombustible waste. As such, in the present specification and claims, the terms first-class waste and second-class waste simply distinguish the difference between being supplied to the incineration facility 2 and being supplied to the shredding facility 3. It is used to Therefore, for example, a part of the second type waste may include the first type waste.

FIG. 3 is a schematic configuration diagram showing an example of the crushing equipment in FIG. The crushing equipment 3 includes, as the crusher 31, a first crusher 31a and a second crusher 31b. In accordance with this, the crushing equipment 3 includes, as the supply device 32, a first supply device 32a and a second supply device 32b. That is, the first supply device 32a is configured to supply the second type waste to the first crusher 31a, and the second supply device 32b is crushed to the second crusher 31b by the first crusher 31a. It is configured to supply second-class waste. Each of the supply devices 32a and 32b is configured as a transfer conveyor such as an apron conveyor.

The downstream end of the first supply device 32a is arranged on the input port side provided at the top of the first crusher 31a. The upstream end of the first supply device 32a is a discharge port of a receiving hopper 302 that temporarily stores the second-type waste that is input from the receiving yard 301 where the second-type waste is accumulated and discharges the second-type waste by a predetermined amount. Placed on the side. The upstream end of the second supply device 32b is arranged on the discharge port side of the first crusher 31a. The downstream end of the second supply device 32b is arranged on the input port side provided at the upper part of the second crusher 31b.

Transport conveyors 304 and 305 are provided below the discharge port provided in the lower portion of the second crusher 31b. The transport conveyors 304 and 305 transport the second type waste (crushed material) crushed by the second crusher 31b to the sorting device 306.

The first crusher 31a includes a rotary blade, and roughly crushes the second-class waste by rotating the blade. The second crusher 31b includes a rotary hammer that rotates in the cylindrical space, and the second-type waste crushed by the first crusher 31a is provided with comb-shaped structures and a rotary hammer provided on the inner wall of the cylindrical space. And crush it more finely. The rotary hammer of the second crusher 31b rotates faster than the rotary blade of the first crusher 31a.

Although not shown, the first shredder 31a is provided with an explosion-proof blower to prevent the first shredder 31a from being filled with flammable gas. Further, the second crusher 31b may also be provided with an explosion-proof blower. For example, in a horizontal crusher as shown in FIG. 3, an explosion-proof blower may be provided. On the other hand, in a vertical type crusher, since the inside of the crusher is naturally exhausted by the rotation of the rotor, an explosion-proof blower is often unnecessary.

The sorting device 306 is configured to sort the second-class waste (crushed material) crushed by the crusher 31 into predetermined resource materials, incombustible materials, and combustible materials. The sorting device 306 includes a first sorting machine 307 that sorts the crushed material according to the presence or absence of magnetism, and a second sorting machine 308 that sorts the crushed material according to the particle size difference (size of the lump).

The first sorter 307 is provided above the downstream end of the transport conveyor 305, and is configured to generate a magnetic force downward. The first sorter 307 attracts the iron content (crushed iron) of the crushed material on the transport conveyor 305 by magnetic force, and stores the crushed iron in the first bunker 311 via the first chute 309. The remaining crushed material containing no iron is sent to the second sorter 308 via the second chute 310.

The second sorter 308 is provided with a drum (not shown) having a rotation axis along the longitudinal direction, and is configured so that the crushed material is thrown into the inside of the drum from an input port provided at one end in the longitudinal direction. There is. A plurality of holes are opened in the cylindrical surface of this drum. The plurality of holes include one or a plurality of types of diameters. For example, when a plurality of holes opened on the cylindrical surface of the drum have two kinds of diameters, the hole on the side closer to the drum inlet has a smaller diameter and is provided on the side farther from the drum inlet (the other end in the longitudinal direction). The diameter of the hole on the side close to the discharge port) is large. The second sorter 308 screens the crushed material put into the drum as the drum rotates around the rotation axis, and selects the crushed material according to the particle size (particle diameter) of the crushed material.

The crushed material discharged to the outside of the drum through a small hole provided in the drum is stored in the second bunker 312 as an incombustible material. The crushed material discharged to the outside of the drum through a large hole provided in the drum is sorted into crushed aluminum and other residues by using a magnetic force with an aluminum sorter (not shown). The crushed aluminum is stored in the third bunker 313. The residue that did not pass through any of the holes is discharged from the discharge port provided at the other longitudinal end of the second sorter 308, and is discharged as a combustible substance to the storage tank 209 of the incineration facility 2 via the discharge conveyor 314. Sent. Similarly, the residue of the aluminum sorter is also sent to the storage tank 209 via the discharge conveyor 314.

Although not shown in the drawing, wind power sorting is performed by a blower for sorting in each place of the sorting device 306. The sorting blower sends sorting air to each discharge path of the first sorting machine 307 and the second sorting machine 308, and is attached to the incombustible material, the crushed iron or the crushed aluminum discharged from each of the sorting machines 307 and 308. Blow off flammable materials. A cyclone device and a bag filter or the like (not shown) are provided on the downstream side of the air blower for sorting in the blowing direction, and after the combustibles and the like contained in the sorting air are removed by the cyclone device, the bag filter, and the like, Sorting air is released to the atmosphere.

The crushing equipment 3 includes a second control device 34 that controls each device 3a of the crushing equipment 3 including the crusher 31 and the supply device 32. The second control device 34 is composed of one or a plurality of control devices arranged in the central control room or the like of the crushing equipment 3. Similarly to the first control device 24, the second control device 34 also includes a calculation unit, a storage unit, a communication unit, and the like (none of which are shown), and a sensor or the like provided in each device 3a of the crushing equipment 3 (Fig. A detection value from (not shown) is input, and a control signal is output to each device 3a of the crushing equipment 3 based on the detection value or an operation command input by a worker.

The electric power generated by the generator 22 of the incineration facility 2 is transmitted to each device 2a of the incineration facility 2 via the first power transmission line 23. Further, the electric power generated by the generator 22 of the incineration facility 2 is also transmitted to each device 3a of the crushing facility 3 via the second power transmission line 33 branched from the first power transmission line 23. The devices 2a and 3a of the facilities 2 and 3 operate by using the electric power generated by the generator 22 as a power source. In FIG. 1, the first control device 24, the second control device 34, a first power consumption amount measuring device 25, a second power consumption amount measuring device 35, and a generated power amount measuring device 26, which will be described later, are provided. Although shown as being external to each device 2a, 3a of the facility 2,3, these devices may also be powered by the power supplied by the generator 22.

The first and second power transmission lines 23 and 33 are configured to be connectable to the external power line 41 connected to the external commercial power system 4. As a result, it is possible to supply (purchase) the power (external power) supplied from the commercial power system 4 to the devices 2a and 3a of the facilities 2 and 3, respectively. The complex processing facility 1 can also supply the electric power generated by the generator 22 to the commercial power system 4 (sell to an electric power company or the like) via the external electric power line 41.

A generated power amount measuring instrument 26 is provided between the generator 22 and each of the power transmission lines 23 and 33. The generated power amount measuring device 26 measures the generated power amount Wg, which is the amount of power generated by the generator 22. Information on the measured power generation amount Wg is sent to the second control device 34 of the crushing equipment 3.

Further, the incineration facility 2 is provided with a first power consumption amount measuring device 25 that measures a first power consumption amount Wc1 that is the amount of power consumed by (the respective devices 2a of) the incineration facility 2. Similarly, the crushing equipment 3 is provided with a second power consumption meter 35 that measures the second power consumption Wc2, which is the amount of power consumed by (the respective devices 3a of) the crushing equipment 3. The total of the first power consumption Wc1 and the second power consumption Wc2 is the power consumption Wc consumed in the complex processing facility 1. Information on the power consumptions Wc1 and Wc2 measured by the power consumption measuring devices 25 and 35 is sent to the second controller 34 of the crushing equipment 3.

The information on the first power consumption Wc1 measured by the first power consumption meter 25 and the information on the generated power Wg measured by the generated power meter 26 is the first controller 24 of the incinerator 2. Can also be sent to.

The second control device 34 calculates the surplus power amount Ws by subtracting the power consumption amount Wc from the generated power amount Wg. More specifically, the second controller 34 calculates (generated power amount Wg)-{(first power consumption amount Wc1)+(second power consumption amount Wc2)}. In the present embodiment, the surplus power amount Ws is equal to the power sale amount. When the surplus power amount Ws has a negative value, the power purchase state is set. The second control device 34 monitors a temporal change in the calculated surplus power amount Ws.

The second controller 34 supplies the supply device 32 so that the supply speed V for supplying the second type waste to the crusher 31 becomes slower when the surplus power amount Ws becomes equal to or less than the predetermined first threshold value W1. To control. Hereinafter, in this specification, the supply speed of the first supply device 32a is referred to as a first supply speed V1, and the supply speed of the second supply device 32b is referred to as a second supply speed V2. The control targets in the present embodiment are the first supply speed V1 of the first supply device 32a and the second supply speed V2 of the second supply device 32b.

FIG. 4 is a graph showing an example of the temporal change of the surplus power amount and the temporal change of the supply speed controlled accordingly in the present embodiment. The first graph from the top in FIG. 4 is a graph showing the temporal change of the surplus power amount Ws (the vertical axis is the surplus power amount Ws and the horizontal axis is the time t), and the second graph is the second supply. It is a graph which shows the time change of the 2nd supply speed V2 of the apparatus 32b (The vertical axis|shaft makes it the 2nd supply speed V2, and a horizontal axis makes time t), and the 3rd graph is the 1st supply apparatus 32a 1st. 6 is a graph showing a change over time of the supply speed V1 (the vertical axis represents the first supply speed V1 and the horizontal axis represents time t).

In the present embodiment, the second control device 34 does not control the second supply device 32b to slow the second supply speed V2 when the surplus power amount Ws is larger than the first threshold value W1. Accordingly, the second supply device 32b operates at the first speed Va preset as the second supply speed V2. The first speed Va is set to, for example, the rated (maximum) speed of the second supply speed V2.

The second controller 34 sets the second supply speed V2 to the second speed Vb lower than the first upper limit value Va when the surplus power amount Ws becomes equal to or lower than the first threshold value W1, and the second speed Vb is set to the second speed Vb. The second supply device 32b is controlled to be Vb. The first upper limit value Va is set to, for example, the rated (maximum) speed of the second supply speed V2.

Similarly, when the surplus power amount Ws becomes equal to or smaller than a predetermined second threshold value W2 smaller than the first threshold value W1, the second control device 34 sets the second supply speed V2 to be lower than the second speed Vb. It is set to the third speed Vc, and the second supply device 32b is controlled so that the third speed Vc is achieved. Further, when the surplus power amount Ws becomes equal to or smaller than the predetermined third threshold value W3 smaller than the second threshold value W2, the second control device 34 sets the second supply speed V2 to be lower than the third speed Vc. The speed is set to four speeds Vd, and the second supply device 32b is controlled so as to be the fourth speed Vd. Note that, for example, the fourth speed Vd may be 0. In this case, the second control device 34 performs control to stop the operation of the second supply device 32b.

In the example of FIG. 4, the surplus power amount Ws becomes less than or equal to the first threshold value W1 at time t1, so that the second supply speed V2 is set from the first speed Va to the second speed Vb (<Va). .. Further, since the surplus power amount Ws becomes equal to or less than the second threshold value W2 at the time t2, the second supply speed V2 is set from the second speed Vb to the third speed Vc (<Vb).

Here, the calorific value per unit amount of the first-class waste varies with the season, time, etc. because the state of the first-class waste varies with humidity, temperature, and the like. For example, the calorific value per unit amount due to the incineration of the first-class waste becomes small because the amount of water contained in the waste increases in the summer. Further, the amount of the first-class waste carried into the storage tank 9 changes from time to time.

On the other hand, the incineration process of the first-class waste in the incineration facility 2 has operational restrictions. For example, the upper and lower limit values of the incineration amount per unit time of the incinerator 21, the upper and lower limit values of the capacity of the storage tank 9, the stop period (maintenance period) of the incinerator 21 or the generator 22, and the continuous operation of the incinerator 21. There is an upper limit for the period.

The upper limit value of the incineration amount and the upper limit value of the capacity of the storage tank 9 are predetermined for each incineration facility 2 as a value indicating the upper limit of the performance of the incineration facility 2. The lower limit value of the incineration amount and the lower limit value of the capacity of the storage tank 9 are previously determined for each incineration facility 2 as the minimum necessary value for the incinerator 21 to continuously perform the incineration process of the first-class waste. There is. The stop period of the incinerator 21 is set as a constraint on the maintenance of the incinerator 21, for example, X times a year, Y days stop per time, etc. The same applies to the suspension period of the generator 22. The continuous operation period of the incinerator 21 is predetermined to maintain the capacity of the incinerator 21.

In the incinerator 2 provided with a plurality of incinerators 21a and 21b, the stop period of one incinerator 21 is performed during the operating period of the other incinerator 21. When the capacity of the first-class waste stored in the storage tank 9 becomes small, some of the plurality of incinerators 21a and 21b are stopped. Therefore, in the incinerator 2 including the two incinerators 21a and 21b as shown in FIG. 1, only the second incinerator 21b is operated (one furnace operation) during the suspension period of the first incinerator 21a. .. Similarly, during the suspension period of the second incinerator 21b, only the first incinerator 21a operates.

In such a single furnace operation, the amount of power generated by the generator 22 is greatly reduced as compared with the case where both of the two incinerators 21a and 21b are operating. Further, as described above, the power generation amount of the power generator 22 may vary depending on the state of the first-class waste and/or the amount of the first-class waste carried into the storage tank 9.

According to the above configuration, the surplus power amount Ws is calculated by subtracting the power amount (power consumption Wc) consumed in the complex processing facility 1 from the power amount (power generation power Wg) generated by the generator 22. When this surplus power amount Ws becomes less than or equal to the predetermined first threshold value W1, the second supply speed V2 of the second-class waste supplied to the second crusher 31b of the crushing equipment 3 is reduced. As a result, the processing load of the second crusher 31b is reduced, and the amount of power consumed by the second crusher 31b is reduced. In this way, when the surplus power amount Ws is reduced to some extent, the processing load of the second crusher 31b having a relatively large power fluctuation in the crushing equipment 3 of the combined processing facility 1 is automatically reduced, Even if the power generation amount of the generator 22 fluctuates, it is possible to prevent the power consumption amount Wc from exceeding the power generation amount Wg.

In particular, the second crusher 31b, which is a high-speed crusher, performs impact crushing, and therefore, compared with the first crusher 31a, changes in the processing load due to changes in the properties and supply amount of the second-class waste (that is, The fluctuation of power consumption) is relatively large. Therefore, since the second supply speed V2 is used as the control target for suppressing the power consumption Wc, the second-class waste is supplied to the second crusher 31b as the generated power Wg decreases. The amount is reduced. As a result, the processing load on the second crusher 31b is reduced, and the power consumption Wc of the entire combined processing facility 1 can be effectively suppressed.

As described above, according to the above configuration, it is possible to prevent the surplus power amount Ws from becoming a negative value in advance, so that it is possible to prevent unexpected power purchase, and the power is generated by the generator 22. It is possible to stably sell surplus power out of the available power. Therefore, it is possible to reduce the operating cost of the complex processing facility 1 and increase the efficiency of operation.

Further, when the generated power amount Wg decreases, the worker of the incineration facility 2 does not need to notify the worker of the crushing facility 3 that the generated power Wg has decreased, and the worker of the crushing facility 3 also generates the generated power. It is no longer necessary to perform a manual change operation that slows down the supply speed of the supply device 32 as the amount Wg decreases. Therefore, according to the above configuration, the burden on the worker of the complex processing facility 1 can be reduced. Moreover, it is possible to automatically adjust an appropriate supply speed according to the generated electric power amount Wg without relying on the operator's sensual manual change operation.

In addition, even if some of the plurality of incinerators 21 are stopped due to maintenance or a change in the amount of type 1 waste to be incinerated in the incinerator 2, the combined treatment facility 1 continues to operate. However, by generating power, it is possible to prevent the power consumption from exceeding the power generation. Therefore, it is possible to flexibly operate the combined processing facility 1 having the plurality of incinerators 21.

Further, according to the above configuration, by setting a plurality of threshold values W1 to W3 and changing the second supply speed V2 accordingly, the processing load of the second crusher 31b is reduced to the surplus power amount Wc. Accordingly, it can be reduced stepwise. Therefore, it is possible to suppress the power consumption amount Wc from exceeding the generated power amount Wg while ensuring the maximum processing capacity in the crushing equipment 3.

In the present embodiment, the second control device 34 slows the second supply speed V2 until the surplus power amount Ws becomes equal to or lower than the first threshold value W1 and becomes higher than the first threshold value W1 again. Control (set V2=Vb) is continued. Further, the second control device 34 controls the second supply speed V2 to be slow when the state in which the surplus power amount Ws is larger than the first threshold value W1 continues for a predetermined time (during the delay time Td). Is canceled (V2=Va).

In the example of FIG. 4, after the surplus power amount Ws becomes equal to or less than the second threshold value W2 at time t2, the surplus power amount Ws becomes larger than the first threshold value W1 again at time t3. From time t3 to time t4 after the delay time Td elapses, the state in which the surplus power amount Ws is larger than the first threshold value W1 continues, so that the second supply speed V2 changes from the third speed Vc to the first speed Va. Return to.

According to this, after the surplus power amount Ws becomes equal to or smaller than the first threshold value W1, the state of being larger than the first threshold value W1 continues for a predetermined time again (becomes larger than the first threshold value W1. Until the delay time Td elapses), the second supply speed V2 does not return to the original value. By increasing the power consumption amount Wc by returning the second supply speed V2 to the original state by performing the return control to return the second supply speed V2 to the original state after the state where the generated power amount Wg exceeds the power consumption amount Wc is stabilized As a result, it is possible to prevent the power consumption amount Wc from exceeding the generated power amount Wg. Thereby, it is possible to prevent the second supply speed V2 from changing frequently.

In addition, when the control for stopping the operation of the second supply device 32b is performed when the surplus power amount Ws becomes equal to or less than the third threshold value W3, the surplus power after the operation stop of the second supply device 32b is performed. The return control of the second supply speed V2 may not be performed regardless of whether the power amount Ws becomes larger than the first threshold value W1. In this case, a separate restart may be required in the second supply device 32b.

Further, in the present embodiment, as shown in FIG. 4, the second control device 34 makes the first supply in the first supply device 32a so as to follow the control of the second supply speed V2 in the second supply device 32b. Control the speed V1. The first speed Ve, the second speed Vf, and the third speed Vg of the first supply speed V1 correspond to the first speed Va, the second speed Vb, and the third speed Vc of the second supply speed V2, respectively.

When controlling the second supply speed V2 in the second supply device 32b to be slow, if the first supply speed V1 is maintained at the first speed Ve, the treatment of the second kind waste in the first crusher 31a Since the amount does not change, the amount (second amount per unit length) of the second type waste transported to the second supply device 32b may increase. In such a case, depending on the crushing equipment 3, the processing load on the second crusher 31b may increase, and there is a risk of overload.

On the other hand, according to the present embodiment, as the second supply speed V2 becomes slower, the first supply speed V1 also becomes slower. Therefore, the amount of the second type waste flowing in the second supply device 32b (unit: The amount per length) can be made even.

In the present embodiment, an example in which the first supply speed V1 is controlled in the same manner as the second supply speed V2 is shown, but the control timings of the two need not be exactly the same. For example, the other supply speed may be changed after the change timing of one supply speed. Further, for example, the second supply speed V2 is controlled to be gradually decreased in a plurality of stages (four stages of the first speed Va to the fourth speed Vd) as described above, while the first supply speed V1 is set. However, the control may be performed with a smaller number of stages (two stages of the first speed Ve to the second speed Vf).

Further, in the present embodiment, the supply speeds V1 and V2 in the respective supply devices 32a and 32b are configured to be changeable by a manual change operation of the worker. When the surplus power amount Ws is larger than the first threshold value W1, the supply speeds V1 and V2 can be freely changed by performing a manual change operation. When the surplus power amount Ws becomes less than or equal to the first threshold value W1, a manual change operation is performed to reduce the supply speeds V1 and V2 from the supply speeds V1 and V2 set at that time. Change operation is allowed.

That is, when the surplus power amount Ws is larger than the first threshold value W1, it can be set higher than the first speed Va by the manual operation of changing the second supply speed V2, or set below the first speed Va. Can also When the surplus power amount Ws becomes equal to or less than the first threshold value W1, the changeable range in the manual change operation of the second supply speed V2 is set to be equal to or less than the second speed Vb. When the surplus power amount Ws becomes equal to or less than the second threshold value W2, the changeable range in the manual change operation of the second supply speed V2 is set to be equal to or less than the third speed Vc. The first supply speed V1 can be similarly set.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various improvements, changes, and modifications can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, the mode in which the control for reducing the second supply speed V2 itself is performed according to the surplus power amount Ws has been described, but instead of this, the control for reducing the control range of the second supply speed V2. You may go. That is, when the surplus power amount Ws becomes equal to or less than the first threshold value W1, the second control device 34 sets the first threshold to the upper limit value or the median value of the speed range in which the second supply speed V2 is allowed. It may be set to a value smaller than the upper limit value or the median value of the speed range when the value is larger than the value W1. Further, the second control device 34 may perform control so as to change the entire speed range (upper limit value and lower limit value) according to the surplus power amount Ws.

Further, in the above-described embodiment, the mode in which the manual change operation of the second supply speed V2 is allowed regardless of whether the surplus power amount Ws is larger than the first threshold value W1 has been described, but the present invention is not limited to this. Absent.

For example, the second control device 34 permits the manual change operation of the second supply speed V2 only when the surplus power amount Ws is larger than the first threshold value W1, and the surplus power amount Ws is the first threshold value W1. In the following cases, the manual change operation may be prohibited. That is, in the example of FIG. 4, the second supply speed V2 may be fixed to the second speed Vb or the third speed Vc lower than the first speed Va from time t1 to time t4. The above-described embodiment is also applicable to a mode in which the manual change operation cannot be performed regardless of whether the surplus power amount Ws is larger than the first threshold value W1.

Further, in the above-described embodiment, when the surplus power amount Ws becomes equal to or less than the first threshold value W1, a control for gradually decreasing the second supply speed V2 using a plurality of threshold values W1 to W3 is performed. Although the mode of performing is illustrated, it is not limited to this. For example, the second control device 34 may change the second supply speed V2 so as to follow the change in the surplus power amount Ws when the surplus power amount Ws becomes equal to or less than the first threshold value W1.

Further, in the above-described embodiment, the second control device 34 calculates the surplus power amount Ws, controls the second supply speed V2 of the second supply device 32b according to the change of the surplus power amount Ws, and follows it. Although the mode of controlling the first supply speed V1 of the first supply device 32a has been described above, the present invention is not limited to this. For example, only the second supply speed V2 of the first supply speed V1 and the second supply speed V2 may be controlled, or only the first supply speed V1 may be controlled.

In the above embodiment, the second controller 34, which is the controller of the crushing facility 3, functions as a controller that controls the supply speed with respect to the change in the surplus power amount Ws. The first control device 24, which is the control device of the above, may exhibit the above function. Further, a higher-level control device that controls the first control device 24 and the second control device 34 may be provided, and the higher-order control device may exhibit the above function.

Further, the first control device 24 and the second control device 34 may cooperate to exert the above-mentioned function. For example, the first controller 24 calculates the surplus power amount Ws and compares it with the first threshold value W1. When the surplus power amount Ws is equal to or less than the first threshold value W1, the supply in the supply device 32 is performed. A command to start the control for reducing the speed may be transmitted to the second control device 34. The second control device 34 may execute the control of decreasing the supply speed in the supply device 32 by receiving the command.

Further, in the above-described embodiment, after the surplus power amount Ws becomes equal to or lower than the first threshold value W1, the state of being higher than the first threshold value W1 continues for a predetermined time (first threshold value W1). The mode in which the return control of the second supply speed V2 is not performed until the delay time Td elapses after the time becomes larger has been described, but the present invention is not limited to this, and the return control may be performed immediately (delay time Td=0. May be).

Further, in the above embodiment, after the surplus power amount Ws becomes equal to or less than the second threshold value W2, the surplus power amount Ws becomes equal to or less than the first threshold value W1 even if the surplus power amount Ws becomes greater than the second threshold value W2. As long as there is, the return control of the second supply speed V2 is not performed. That is, the control at the third speed Vc is maintained. However, instead of this mode, for example, when the state in which the surplus power amount Ws becomes larger than the second threshold value W2 continues for a predetermined time after the surplus power amount Ws becomes equal to or less than the second threshold value W2. Alternatively, the control may be changed to the second speed Vb. That is, the return control of the second supply speed V2 may be performed stepwise.

Further, in the above-described embodiment, the incinerator 2 having the stoker type incinerator 21 is exemplified, but the generator 22 that generates electric power by using the steam generated when incinerating the waste in the incinerator 21 is used. The incinerator 2 provided is not limited to this. For example, the above-described embodiment can be applied to a complex treatment facility including an incinerator having a fluidized bed type incinerator.

Moreover, in the said embodiment, although the incinerator 2 provided with the two incinerators 21a and 21b was illustrated, the number of incinerators is not restricted to this. For example, the incinerator 2 may have one incinerator, or may have three or more incinerators. Further, when the number of incinerators used for incineration of the first-class waste is changed depending on the amount of the first-class waste in the case of having three or more incinerators, at least one of them should be selected. Stop or run one. Further, the number of incinerators that operate may be changed stepwise according to the amount of the first-class waste.

Further, in the above-described embodiment, the equipment including the sorting device 306 as the crushing equipment 3 is illustrated, but the crushing equipment 3 does not include the sorting device 306, and the crushing process using the crusher 31 is mainly performed. Includes intermediate processing equipment.

INDUSTRIAL APPLICABILITY The present invention is useful in a combined processing facility including an incineration facility capable of generating power and a crushing facility in order to prevent power consumption from exceeding the power generation amount.

1 Combined processing facility 2 Incinerator 3 Crushing equipment 21, 21a, 21b Incinerator 22 Generator 25 First power consumption meter (power consumption meter)
26 Generator Power Measuring Instruments 31, 31a, 31b Crushers 32, 32a, 32b Supply Device 34 Second Control Device (Control Device)
35 Second power consumption meter (power consumption meter)

Claims (6)

An incinerator for incinerating the first-class waste, and a generator for generating power using steam generated by exhaust heat generated when the first-class waste is incinerated in the incinerator are provided. Incineration equipment,
Crushing provided with a crusher for crushing the second-class waste and a supply device for supplying the second-class waste to the crusher to recover a resource from the second-class waste Equipment and
A power consumption amount measuring device for measuring the power consumption amount which is the power amount consumed in the incineration facility and the crushing facility,
A generated power amount measuring device that measures a generated power amount that is the amount of power generated by the generator,
And a control device,
The incineration facility and the crushing facility are configured to be operable by electric power generated by the generator,
The control device calculates a surplus power amount by subtracting the power consumption amount from the generated power amount, and when the surplus power amount is equal to or less than a predetermined first threshold value, the crusher receives the second power. A combined treatment facility, wherein the supply device is controlled so that the supply speed of supplying seed waste is slow. The control device is
When the surplus power amount is equal to or less than the first threshold value, the supply device is controlled so that the supply speed becomes a second speed lower than a predetermined first speed,
The supply device is controlled so that the supply speed becomes a third speed lower than the second speed when the surplus power amount becomes equal to or less than a predetermined second threshold value smaller than the first threshold value. The complex processing facility according to claim 1. The control device is
Until the surplus power amount becomes equal to or lower than the first threshold value and becomes higher than the first threshold value again, control for slowing the supply speed is continued,
The complex processing facility according to claim 1, wherein the control for slowing down the supply speed is released when the state in which the surplus power amount becomes larger than the first threshold value continues for a predetermined time. The crusher includes a first crusher and a second crusher,
The supply device includes a first supply device for supplying the second type waste to the first crusher, and the second type waste crushed by the first crusher to the second crusher. A second supply device for supplying,
The control device controls to slow down the supply speed of at least one of the first supply device and the second supply device when the surplus power amount becomes equal to or less than the first threshold value. The complex processing facility according to claim 1. The incineration facility includes a plurality of the incinerators, and the number of the plurality of incinerators used to incinerate the first type waste is changed according to the amount of the first type waste. The complex processing facility according to any one of 1. The combined treatment facility according to any one of claims 1 to 5, wherein the incineration facility is configured to be able to transmit surplus power of the power generated by the generator to the outside of the combined treatment facility.

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