JPH0596733U - Waste supply device to incinerator - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce fluctuations in the combustion of waste, especially in large and small waste incinerators, especially in small and medium-sized incinerators. [Structure] A bread conveyor 11 in which a plurality of gutter-shaped breads 11a elongated in the width direction are connected in a waste supply chute 1c closer to the incinerator H than the waste crushing means 9 of the waste supplying device B is disposed from the waste crushing means 9. Bread conveyor 11 is provided in a direction perpendicular to the waste discharge direction and separates the crushed waste that is supplied together at a time from the crushing rotor 5 of the dust crushing means 9.
By distributing and feeding the pans 11a in a substantially equal number in each longitudinal direction in a uniform manner and transporting them, each crushed waste is dispersed and crushed, and several crushed wastes are continuously supplied to the incinerator H at short intervals. Since the combustion peak of the waste can be made continuous, the combustion fluctuation of the waste in the furnace is reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a waste supply device for an incinerator, and more specifically, shortens the waste supply interval when supplying waste not only to large incinerators but also to small and medium-sized incinerators, and makes it continuous. By doing so, the present invention relates to a waste supply device for an incinerator, which can reduce fluctuations in the combustion of the waste in the incinerator.

[0002]

[Prior Art]

 As is well known, when incinerating waste in an incinerator, the waste supply device burns the waste from the waste pit into the hopper of the waste supply device by a crane from the waste pit, burns the waste in the incinerator, and extracts incombustibles. It is a device that performs simple coarse crushing to the extent that it does not hinder the crushing process, and quantitatively continuously feeds the waste after coarse crushing into the incinerator. As such a dust supply device, for example, the one disclosed in Japanese Utility Model Laid-Open No. 3-64322 filed by the applicant of the present application is known.

Hereinafter, an example of the dust supply device B will be introduced with reference to FIG. 6a, which is a schematic sectional configuration explanatory view, and FIG. 6b, which is a detailed view of a portion B of FIG. 6a. A hopper 2 for throwing dust is integrally formed above the casing 1 connected to the incinerator H, and the dust T thrown into this hopper 2 is provided below the hopper outlet 2a at the bottom of the hopper 2. In order to push in quantitatively, a pusher 3 which is reciprocally driven by a pusher working cylinder 4 in the direction of the white arrow, that is, in the left-right direction in the drawing is provided. Further, below the pusher 3, a crushing rotor 5 having a rotary blade 6 having a plurality of claws 6a on its outer peripheral surface is rotatably arranged, and is rotationally driven by a hydraulic motor (not shown). ing.

Further, as shown in FIG. 7, a support base 7 having fixed blades 7 a and 7 b provided at predetermined intervals in the width direction is provided in the support base operating cylinder 8 in opposition to the crushing rotor 5. Therefore, the crushing rotor 5 is oscillated toward the rotary blade 6. In this case, the crushing rotor 5, the rotary blade 6, the claws 6a, the support base 7, the fixed blades 7a and 7b, and the support base operating cylinder 8 push the crusher 5 into the crushing rotor 5 and the fixed blades 7a and 7b. A waste crushing means 9 for crushing the waste that is quantitatively supplied to the waste storage portion 1b formed in the front is configured.

In addition, in order to prevent overcooling in the incinerator H, a counterweight is supported by a support shaft provided in front of the pusher 3 and inside the dust passage 1a of the casing 1. By blocking the waste passage 1a with W, it is a holding plate 10 that prevents the leak air from leaking into the incinerator H, and the ITV provided outside the waste reservoir 1b is It is a camera that monitors the condition of the garbage storage unit 1b.

Therefore, in the waste supply device B having the above-mentioned configuration, the waste T introduced into the hopper 2 from the waste pit by the crane C is pushed into the waste storage section 1b from the hopper outlet 2a by the reciprocating motion of the pusher 3 and the waste is stored. This is crushed by the crushing means 9, the waste T is roughly crushed, and the roughly crushed waste is supplied to the incinerator H through the waste supply chute 1c at the bottom of the casing 1.

[0007]

[Problems to be solved by the device]

 By the way, considering the interval of the dust supply from the waste dust collector B as described above, the size of the waste bag that is pulled out from the collected waste bags and the waste bags that have been broken into bags causes the incinerator to have a unit of seconds. In other words, garbage will be supplied intermittently.

In FIG. 7, the amount of dust that separates from the meshing portion between the crushing rotor 5 and the supporting base 7 at once is (width of crushing rotor) × (width of crushing rotor) when the length of the crushed dust is 10 cm. Engagement dimension) x (dust length) x (bulk bulk specific gravity) = 1.2 m x 0.15 m x 0.1 m x 0.2 T / m ³ x 1000 = 3.6 ≈ 4 kg / cycle. On the other hand, the width of the crushing rotor of the dust collector is related to the size of the refuse to be treated, and the size of the refuse to be collected from general households is 30 to 50 cm. In order to supply, the width of the pusher and the width of the crushing rotor which are 3 to 4 times the size of the waste are required. For this reason, the width of the crushing rotor cannot be significantly reduced to less than 1.2 m regardless of the waste incinerator's waste incineration capacity, so this size is constrained, and even if the waste incinerator's processing capacity is large. Even if the size is small, the amount of dust that falls from the rotor of the dust-feeding device is about 4 kg each time.

Next, considering the relationship between the waste supply amount, the supply interval, and the incineration capacity of the incinerator, in the case of a relatively large 120T / 16h incinerator, incineration per second from the incinerator The capacity is (120 × 1000) / (16 × 3600) = 2.08≈2 kg / sec, and the dust supply interval from the dust collector is 4 kg / 2 kg = 2 sec / cycle. In addition, in the case of a medium-sized 60T / 16h incinerator, the incineration capacity per second is 1 kg / sec, and the waste supply interval is 4 kg / 1 kg = 4 sec / cycle. Further, in the case of a small 30T / 16h incinerator, it becomes 0.5 kg / sec, and the dust supply interval is 4 kg / 0.5 kg = 8 sec / cycle.

By the way, the fluidized bed type incinerator, which is often used as a waste incinerator, is characterized in that it is possible to incinerate all the waste in a short time due to the movement of the sand at a high temperature. The burning speed of waste is extremely fast, and if the supply of waste to the incinerator is intermittent, the burning of waste will also be intermittent. Generally, the dust put in the incinerator is completely burned in about 5 to 15 seconds, but if this is schematically modeled as a burning peak occurs after 5 seconds and burning is completed in 10 seconds, 120T / In the case of a 16h incinerator, it will be as shown in Figure 8a, in the case of a 60T / 16h incinerator, it will be as shown in Figure 8b, and in the case of a 60T / 16h incinerator, it will be as shown in Figure 8c. ..

As shown in these figures, in a large incinerator having a capacity of 120T / 16h, the dust feeding interval is 2 seconds, and correspondingly, the peak of combustion also occurs every 2 seconds. However, in a medium-sized incinerator with a capacity of 60T / 16h, there are considerable strengths and weaknesses in the combustion state of waste, and in the case of a small incinerator with a capacity of 30T / 16h, there are large peaks and valleys in the state of waste combustion. And the combustion state becomes very unstable. In other words, the more stable the combustion state of the waste, the higher the furnace top temperature (850 ° C or higher) becomes stable, and the amount of CO that is unburned gas and the amount of dioxins that are trace harmful substances also decrease. However, if combustion conditions become unstable, they will increase, and it will be impossible to comply with the national guidelines for environmental pollution.

Therefore, an object of the present invention is to make it possible to stably burn waste not only in large incinerators but also in medium- and small-size incinerators by shortening the waste supply interble. It is to provide a waste supply device for an incinerator that can be used if possible.

[0013]

[Means for Solving the Problems]

 The present invention has been made in view of the above problems.Therefore, in order to solve the above problems, the feature of the main means adopted by the waste supply device for an incinerator according to the present invention is that the waste is In a refuse supply device for an incinerator, which is provided with a rotatably driven dust crushing means in which a rotary blade is provided around the outer circumference in a casing that communicates with the incinerator from the outlet side of a charging hopper, Between the waste crushing means and the incinerator, there is provided a waste conveyer for receiving and crushing the waste crushed by the waste crushing means, at a right angle to the waste discharging direction of the waste crushing means.

[0014]

[Action]

 According to the waste supply device for the incinerator according to the present invention, the waste crushed by the waste crushing means is collected in several pieces and simultaneously supplied to the waste conveyor, but here, only in the width direction of the waste conveyor. Instead, the crushed rotor is distributed and supplied in the front and back in the same direction as the width direction of the crushing rotor before being transferred, so that each crushed waste is continuously supplied to the incinerator at short intervals.

[0015]

【Example】

 Hereinafter, an example of a refuse supply device for an incinerator according to an embodiment of the present invention is a schematic cross-sectional configuration explanatory view thereof, FIG. 1, a cross-sectional view taken along line AA of FIG. 1, and a plane of FIG. Fig. 3 of the drawing, and Fig. 4a of the diagram schematically showing the supply condition of the dust crushed by the dust crushing means and supplied from the rotor part, and Fig. 4a schematically showing the supply condition of the dust from the internal bread conveyor. With reference to FIG. 4B of the drawing, the same components as those of the conventional one and those having the same function will be described with the same reference numerals.

First, as shown in FIG. 1, the entire structure of the dust supply device B is such that a hopper 2 for throwing dust is integrally formed above a casing 1 connected to an incinerator H (not shown). Below the hopper outlet 2a in the lower part of the hopper 2, in order to quantitatively push out the dust T thrown into the hopper 2, the pusher operating cylinder 4 reciprocates in the direction of the white arrow, that is, the left and right direction in the figure. A driven pusher 3 is provided.

A crushing rotor 5 having a rotary blade 6 having a plurality of claws 6a on its outer peripheral surface is provided below the front of the pusher 3 and the crushing rotor 5 is driven by a hydraulic motor (not shown). It is designed to be rotated. Further, a support base 7 having fixed blades 7a and 7b arranged at a predetermined interval in the width direction is disposed opposite to the crushing rotor 5, and this crushing rotor 5 is supported by the support base operating cylinder 8. The rotary blade 6 is rockably operated.

In this case, similarly to the conventional dust supply device, the crushing rotor 5, the rotary blade 6, the claw 6 a, the support base 7, the fixed blade 7 a, the support base operating cylinder 8 and the like push out the pusher 3 from the pusher 3. A crushing means 9 is provided for roughly crushing the waste T that is quantitatively supplied to the crushing rotor 5 and the trash storage portion 1b formed in front of the fixed blade 7a and crushing the trash in the trash bag. It

A pressing plate 10 is swingably supported in front of the pusher 3 and inside the casing 1, and is swingably operated by a counterweight W with a support shaft as a center as in the conventional case. It is configured to block the leak air sucked in from the incinerator. As is well understood from the above description, this has the same structure as the conventional waste feeding device.

In the present embodiment, as shown in FIG. 2, the conveying direction of the refuse supply chute 1c on the destination side of the refuse is smaller than that of the refuse crushing means 9 in the casing 1 of the refuse supplying device having the above-described configuration. In addition to internally installing a bread conveyor 11 as a waste conveying conveyor in which a gutter-shaped bread 11a that is long in the width direction is connected in a state of being inclined so as to be higher, a horizontal axis from the bread conveyor 11 to the incinerator H side. The impeller-shaped sealing machine 12 that rotates around the center and prevents the backflow of combustion gas from the incinerator and the inflow of leak air to the combustion furnace side is installed internally. The pan conveyer 11 is controlled in conjunction with the rotation speed of the crushing rotor 5 so as to convey a predetermined amount of dust T without excess or deficiency. FIG. 3 is a plan view showing a plan view of the entire waste supply device, in which the pan conveyor 11 is installed at right angles to the direction in which the waste crushing means 9 of the dust supply device discharges the waste from the crushing rotor 5. Shows the situation.

The operation mode of the waste feeding device having the above-described configuration will be described below. As in the conventional case, the waste T thrown into the hopper 2 by the crane falls from the hopper outlet 2a, and the fallen dust expands and contracts in the pusher 3. By the operation, it is extruded to the dust crushing means 9 side. Then, the extruded waste T is crushed by being bitten between the rotary blade 6 of the crushing rotor 5 of the dust crushing means 9 and the fixed blades 7a and 7b attached to the support base 7 and crushing rotor. It separates from 5 and falls on the pan conveyor 11. When the trash T crushed in this way falls on the pan conveyor 11, the trash T that has fallen spreads in the front-rear direction of the conveying direction of the pan conveyor 11 with the width of the crushing rotor 5 or more. The crushed garbage is put into several breads 11a separately.

The crushed wastes arranged in the conveying direction of the bread conveyor 11 are conveyed by the bread conveyor 11, and the crushed garbage T for each bread is shortened in the feeding interval in accordance with the supply speed of the bread conveyor 11. Therefore, it is supplied to the incinerator H through the sealing machine 12 provided below it.

By the way, the uniformity of the amount of supplied waste in this case will be described with reference to FIGS. 4a and 4b by taking a small incinerator having an incineration capacity of 30T / 16h as an example. 9 pieces of 1.2m wide rotor were crushed to about 10cm long x 15cm thick x 10cm wide, and then 0.3kg x 12 pieces of total about 4kg of dust were crushed every 8 seconds. It is separated from the rotor 5 and supplied to the pan conveyor 11. When such bread is received by the bread conveyor 11, one or two pieces of 0.3 kg of garbage are dispersed and placed on each bread 11a of the bread conveyor 11, and as the bread conveyor 11 moves forward, the garbage of each bread is collected. That is, 1 to 2 pieces of refuse are supplied to the incinerator H.

Therefore, for the rated average supply amount of waste of 0.52 kg / sec [30000 kg / (16 h × 60 min × 60 sec) = 0.52 kg / sec] to the incinerator of 30 T / 16 h, from each actual bread The maximum amount of waste that can be supplied is 0.6 kg / sec for two pieces, and the minimum is 0.3 kg / sec for one piece, which is continuously supplied to the incinerator. Considering such waste supply interval and waste combustion time (about 10 seconds), the combustion of waste in the incinerator is almost completely stabilized, and incomplete combustion of waste is prevented. .. In this embodiment, the sealing machine 12 is provided on the incinerator H side of the pan conveyer 11 as described above because of the stability of combustion due to supercooling in the incinerator due to leakage of cold air into the incinerator side. It was possible to maintain a more stable combustion situation by preventing the fact that it was damaged.

Next, another embodiment relating to the waste supply device for the incinerator is different from the above embodiment with reference to FIG. 5 which is a schematic cross-sectional configuration explanatory diagram of the waste supply device corresponding to FIG. Explaining only the structural points below, this is a crushing rotor 5 side of the casing 1 that is inclined toward the incinerator H side so that the destination is slightly lower, and is used as a trash conveyor via a bellows. The vibration conveyor 11 is provided. A vibration motor M is attached to the outside of the vibrating conveyor 11 on the side opposite to the conveying side.

The operation mode of the waste feeder B according to the above embodiment will be described below. As with the waste feeder in the above embodiment, a total of about 4 kg of about 0.3 kg × 12 pieces is formed. When the dust separates from the crushing rotor 5 every 8 seconds and is distributed in the conveying direction of the vibration conveyor 11 and supplied, 0.3 kg of dust T is separated by the vibration of the vibration conveyor 11 due to the operation of the vibration motor M. Since this is supplied to the incinerator H, this embodiment has the same effect as the above embodiment.

[0027]

[Effect of the device]

 As described in detail above, according to the waste incinerator waste supply device of the present invention, the waste crushed by the waste crushing means is supplied to the waste transport conveyor. Since it is transported in a state that it spreads in the front and rear of the transport direction and is supplied to the incinerator, the dust separated from the crushing rotor is not supplied to the incinerator at a time as in the past, but it is divided into small parts. The waste supply interval shortens the waste supply interval and stabilizes the combustion state, which is extremely effective in preventing the generation of CO gas and dioxins from small and medium-sized incinerators.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional configuration explanatory diagram of a dust supply device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4a is a diagram schematically showing a supply situation of dust crushed by a dust crushing means, and FIG. 4b is a diagram schematically showing a dust transport condition by a pan conveyor.

FIG. 5 is a schematic cross-sectional configuration explanatory diagram of a dust supply device according to another embodiment of the present invention.

FIG. 6a is a schematic cross-sectional configuration explanatory view of a dust supply device according to a conventional example, and FIG. 6b is a detailed view of a B portion of FIG. 6a.

FIG. 7 is a perspective view showing dust crushing means of a dust feeding device according to a conventional example.

[Fig. 8] Fig. 8 shows the relationship between the waste supply status (waste supply interval) by the waste supply device according to the conventional example, the waste incineration pattern, and the waste incineration capacity of the waste incinerator. Fig. 8a shows 120T.
FIG. 8b is a schematic diagram showing a case of a / 16h incinerator, FIG. 8b is a schematic diagram showing a case of a 60T / 16h incinerator, and FIG. 8c is a schematic diagram showing a case of a 60T / 16h incinerator.

[Explanation of symbols]

1 ... Casing, 1a ... Garbage passage, 1b ... Garbage storage part, 1c ... Garbage supply chute, 2 ... Hopper, 2a ... Hopper outlet, 3 ... Pusher, 4 ... Pusher operating cylinder, 5 ... Crushing rotor, 6 ... Rotating blade , 6a ... Claws, 7 ... Support base, 7a, 7b ... Fixed blade, 8 ... Support base working cylinder,
9 ... Garbage crushing means, 10 ... Holding plate, 11 ... Bread conveyor or vibration conveyor, 11a ... Bread, 12 ... Sealing machine,
B ... Garbage supply device, H ... Incinerator, M ... Excitation motor, T ...
Garbage.

Claims (1)

[Scope of utility model registration request] 1. A refuse supply device for an incinerator, comprising a rotary crushable dust crushing means comprising a rotary blade around an outer periphery in a casing communicating with an incinerator from an outlet side of a hopper for throwing refuse. In the above, between the refuse crushing means of the casing and the incinerator, there is provided a waste conveyor which receives and conveys the waste crushed by the waste crushing means at a right angle to the waste discharging direction of the waste crushing means. Characteristic waste supply device to incinerator.