JP2001334215A - Heat decomposition residue sorting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the mitigation of labor by an operator by decreasing the frequency of cleaning the screen openings of the heat decomposition residue sorting device to such an extent that the frequency is less than that of the conventional type of the device and also the improvement of the operating efficiency of sorting out a heat decomposition residue. SOLUTION: A horizontal hollow rotator 87 which receives the heat decomposition residue originating from a heat decomposition reactor, from one end side in the axial center direction, then stores the residue and rotates, is mounted at an inclined position where the one end side in the axial center direction is higher than the other end side. Further, a plurality of the screen openings 88 are formed in the hollow rotator 87 and residue discharge apertures 101 which are more in number than the screen openings 88 and are used for discharging the heat decomposition residue not sifted down from the screen openings 88, are provided at the other end side in the axial center direction of the hollow rotator 87.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pyrolysis residue.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned pyrolysis residue sorting apparatus has a large vibrating type first sieve for receiving a pyrolysis residue from a pyrolysis reactor, and a pyrolysis residue from the first sieve. Some were provided with a vibrating second sieve having a small sieve for receiving the residue.

[0003]

According to the above-mentioned conventional structure, since each sieve is of a vibrating type, when a long pyrolysis residue such as a wire enters the sieve, it does not come off from the sieve as it is. It was easy.

As a result, there is a problem that the line must be stopped and the sieve must be cleaned frequently, which increases the burden on the operator and reduces the work efficiency due to the stop of the line.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the frequency of cleaning the sieve of a pyrolysis residue sorting apparatus as compared with the conventional apparatus, thereby reducing the labor of the operator. Another object of the present invention is to improve the efficiency of the operation of sorting the pyrolysis residues.

[0006]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] A horizontal hollow rotating body that receives and accommodates the pyrolysis residue from the pyrolysis reactor from one end in the axial direction and rotates the hollow rotary body at one end in the axial direction is higher than the other end. A plurality of sieves are formed in the hollow rotating body, and a sieve mesh or more for discharging the pyrolysis residue that has not leaked from the sieve to the other end of the hollow rotating body in the axial direction. A residue outlet is provided.

[A] [A] A horizontal hollow rotating body receives and accommodates the pyrolysis residue from the pyrolysis reactor from one end in the axial direction and rotates. Since the hollow rotator is set in an inclined position in which one end side in the axial direction is located higher than the other end side, the pyrolysis residue is subjected to the rotational force around the axis in the hollow rotator while receiving the rotational force. It goes to the other end side in the axial direction.

[B] The pyrolysis residue smaller than the sieve leaks from the plurality of sieves, and the pyrolysis residue larger than the sieve is equal to or larger than the sieve on the opposite side from the one end side in the axial direction. It is discharged from the residue outlet.

[C] As described above, the pyrolysis residue is sieved while rotating the hollow rotator having a plurality of sieves, so that even if the elongated pyrolysis residue such as wire enters the sieve, the hollow rotator is removed. With the rotation of, it is easy to come off the sieve. As a result, for example, it is possible to reduce the frequency of cleaning the sieve due to the wire or the like being caught on the sieve, and to reduce the frequency of stopping the line for cleaning the sieve compared to the conventional. Can be.

[Effect] Therefore, the frequency of cleaning the sieve of the pyrolysis residue sorting apparatus can be reduced as compared with the conventional case, the labor of the operator can be reduced, and the line for cleaning the sieve is stopped. The frequency can be reduced as compared with the conventional case, and the work efficiency of the sorting operation of the pyrolysis residue can be improved.

The construction, operation and effect of the invention according to claim 2 are as follows.

[Structure] A horizontal hollow rotating body that receives and accommodates the pyrolysis residue from the pyrolysis reactor from one end in the axial direction and rotates the hollow rotary body at one end in the axial direction is higher than the other end. The hollow rotary body is divided into two sections at a predetermined length ratio in the axial direction, and a plurality of sieves are formed in the hollow rotary body portion of the section corresponding to the one end side. In addition, a predetermined number of scraping blades for scraping the pyrolysis residue that has not leaked from the sieve into the hollow rotating body portion of the section corresponding to the other end side with the rotation of the hollow rotating body. , And a residue discharge port that is equal to or larger than a sieve is provided on a side opposite to the plurality of sieves with the scraping blade interposed therebetween.

[Operation] [d] According to the configuration of claim 2, the same operation as the operation [a] of the configuration of claim 1 can be achieved.

(E) The pyrolysis residue smaller than the sieve leaks from the plurality of sieves, and the pyrolysis residue that does not leak from the sieve enters the scraping blade side, causing the rotation of the hollow rotary body. While being scraped up, it goes to the other end side in the axial direction, and enters the residue discharge port beyond the sieve and is discharged.

[F] As a result, the same operation as the operation [c] by the configuration of claim 1 can be achieved.

[G] Further, by the above-mentioned action [e], the carbon residue adhering to the large pyrolysis residue is subjected to a large thermal decomposition by the impact of the scraped-up pyrolysis residue falling in the hollow rotary body. It can be separated from the residue.

Thus, when the pyrolysis residue discharged from the apparatus is sorted by various metal sorters, the purity of the metal can be reduced without providing a wind separator for sorting the carbon residue from the large pyrolysis residue. Can be sorted with a high state.

[Effects] Therefore, the above operations [d],
According to [e] and [f], the frequency of cleaning the sieve can be reduced as compared with the conventional case, and the labor of the operator can be reduced.
The frequency of stopping the line for cleaning the sieve can be reduced as compared with the conventional case, the work efficiency of the operation of sorting the pyrolysis residue can be improved, and the above operation [g] can reduce the space for the apparatus. The device can be made smaller than before, and the device can be made more compact.

The construction, operation and effect of the invention according to claim 3 are as follows.

[Structure] In the structure of the invention according to claim 2, a coarse material sieving section is provided for passing a coarse material out of the pyrolysis residue above the sieve and above a residue discharge port. A bulky material outlet is provided.

[Operation] In addition to the same operation as the operation according to the second aspect, the following operation can be obtained.

In other words, the bulky substance among the pyrolysis residues is passed through the coarse-matter screening section and above the residue discharge port, enters the bulky substance discharge port, and is discharged.

[Effects] Therefore, in addition to the same effects as the effects of the second aspect, the sorting accuracy can be improved.

The structure, operation and effect of the invention according to claim 4 are as follows.

[0026] In the structure according to the third aspect of the present invention, the large-size sieving section includes a plurality of rod-shaped members extending along the axial direction on the other end side in the axial direction of the hollow rotary body. It is configured to be cantilevered in a state of being arranged in the circumferential direction of the rotating body.

[Operation] In addition to the same operation as the operation according to the configuration of the third aspect, in addition to the above, the oversized sieving portion is provided at the other end side of the hollow rotating body in the axial center direction. Since a plurality of rod-shaped members extending along the core direction are cantilevered in a state of being aligned in the circumferential direction of the hollow rotary body, even a large object such as a lump of wire is hardly caught.

[Effect] Therefore, in addition to the same effect as the effect of the configuration of claim 3, it is possible to further improve the sorting accuracy.

The structure, operation and effect of the invention according to claim 5 are as follows.

[Constitution] In the constitution of the invention according to any one of claims 1, 2, 3, and 4, the tubular pyrolysis residue guide for discharging and guiding the pyrolysis residue leaking from the sieve is provided. It is connected to the outer periphery of the hollow rotating body.

[Operation] The same operation as the operation according to any one of the first, second, third and fourth aspects can be obtained, and the following operation can be obtained.

For example, as shown in FIG. 7 (b), in the case where the thermal decomposition residue guide 104 is not provided, the elongated thermal decomposition residue such as the bent wire 78 is applied to the plate-shaped peripheral wall portion 87A of the hollow rotary member 87. According to the configuration of claim 5, since the thermal decomposition residue guide 104 is provided as shown in FIG. 7 (a), an elongated heat source such as a bent wire 78 is provided. The decomposition residue cannot sandwich the plate-shaped peripheral wall portion 87A of the hollow rotating body 87, so that the wire 78 or the like can be prevented from being caught.

[Effect] Therefore, the same effect as the effect of any one of the first, second, third, and fourth aspects is more easily obtained.

The structure, operation and effect of the invention according to claim 6 are as follows.

[Structure] In the structure according to any one of the first, second, third, fourth and fifth aspects, the distance between the sieves adjacent to each other in the axial direction is at least a set distance.

[Operation] In addition to the same operation as the operation according to any one of the first, second, third, fourth, and fifth aspects, a wire or the like can be obtained by increasing the set distance to some extent. The elongated pyrolysis residue is straddled between the adjacent sieves, that is, one end of the wire is less likely to be caught on one sieve and the other end is caught on the other sieve. .

[Effects] Therefore, claims 1, 2, 3, 4,
5, it is easier to obtain the same effect as the effect of any one of the configurations.

[0038]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a pyrolysis gasification and melting plant which is a plant for treating general waste such as household waste and industrial waste such as car shredder dust and electric appliances.

This pyrolysis gasification and melting plant comprises a pretreatment facility 1, a pyrolysis drum facility 2, a pyrolysis residue sorting facility 3, a high temperature combustion and melting facility 4, a boiler power generation facility 5, and an exhaust gas treatment facility 6.

[Pretreatment equipment 1] The waste stored in the waste pit 7 is crushed by a crusher, and the crushed waste is sent to the pyrolysis drum equipment 2 by a transport device or the like.

[Thermal Decomposition Drum Equipment 2] As shown in FIGS. 1 and 2, the screw feeder 10 receives the waste from the waste pit 7 into the feeder case 11 and the pyrolysis drum 12 (to the thermal decomposition reactor). The waste is thermally decomposed by the pyrolysis drum 12 into a pyrolysis gas and a pyrolysis residue at about 450 ° C. in an oxygen-free or low-oxygen atmosphere.

The pyrolysis drum 12 is provided with a horizontal rotary drum 27 for receiving the waste from the screw feeder 10 into the hollow, and a plurality of heat transfer tubes 28 for flowing a heating gas for heating the waste. 27, a heating gas supply unit 29, a heating gas discharge unit 30, and a pyrolysis gas / pyrolysis residue discharge unit 31 for the heat transfer tube 28 are provided along the longitudinal direction of the rotary drum 27. I have.

A heating gas supply port 39 is provided in the heating gas supply section 29, and a heating gas is supplied to the heating gas supply port 39 from a hot air generating furnace 41.

The pyrolysis gas is supplied to a pyrolysis gas / pyrolysis residue discharge case 4 provided in the pyrolysis gas / pyrolysis residue discharge section 31.
5 is discharged from the pyrolysis gas discharge port 46 on the upper end side and sent to the high-temperature combustion melting furnace 13, and the pyrolysis residue is supplied to the pyrolysis residue discharge port 47 on the lower end side of the pyrolysis gas / pyrolysis residue discharge case 45.
And sent to the pyrolysis residue sorting equipment 3.

[Pyrolysis Residue Sorting Facility 3] As shown in FIG. 3, the pyrolysis residue from the pyrolysis drum facility 2 is conveyed while being cooled by the cooling vibration conveyor 14, and valuable resources such as iron and aluminum are collected. Then, carbon residues other than valuables are sent to the high temperature combustion melting furnace 13. The detailed structure of each part of the facility will be described later.

[High-Temperature Combustion Melting Facility 4] The pyrolysis gas, carbon residue and dust dust are blown into the high-temperature combustion melting furnace 13 from the furnace top side, and these are swirled and burned. Ash and dust particles in the carbon residue are melted and discharged continuously from the furnace bottom.

Since the waste is converted into fuel in the pyrolysis drum facility 2, it can be burned at a low air ratio (1.3), and the exhaust gas is reduced by the low air ratio combustion. Multi-stage combustion and exhaust gas recirculation to reduce NOx, and sufficient residence time to reduce dioxin.

[Boiler power generation equipment] Exhaust gas is cooled in a boiler radiation zone, made to a uniform temperature in a group of evaporating tubes, and then sent to a group of superheated steam tubes. The steam is recovered by the boiler 18 and recovered as electricity by a turbine / generator (not shown).

[Exhaust gas treatment equipment 6] Exhaust gas is treated in the gas cooling chamber 21, the first bag filter 17, the second bag filter 22, and the like, and is exhausted from the chimney 25.

Next, the thermal decomposition residue sorting equipment 3 will be described.

[0052] As shown in FIG.
The thermal decomposition residue from the thermal decomposition residue discharge port 47 (see FIG. 2) is sent to the bucket conveyor 55 via the cooling vibration conveyor 14. The cooling vibration conveyor 14 is a nitrogen-filled water-cooled jacket type, and cools the pyrolysis residue in a nitrogen atmosphere to a temperature (about 80 ° C.) at which ignition does not occur.

Then, the pyrolysis residue from the bucket conveyor 55 is sent to a rotary sieving machine 84 (corresponding to a pyrolysis residue sorting device) via a vibrating conveyor 59 for sealing. The sealing vibrating conveyor 59 accumulates pyrolysis residues on the conveying surface and prevents the outside air from entering the bucket conveyor 55 side.

Next, the rotary sieving machine 84 will be described in detail. As shown in FIG. 3 and FIG.
The horizontal hollow rotator 87, which receives and accommodates the pyrolysis residue from the pyrolysis drum 12 from one end in the axial direction and drives and rotates it, is tilted such that one end in the axial direction is positioned higher than the other end. Is provided. In FIG. 4, O is the axis of the hollow rotary member 87, 85 is the drive roller mechanism of the hollow rotary member 87, and 86 is the idle roller mechanism.

The inclination angle of the hollow rotary member 87 is 10 degrees (another inclination angle in the range of 5 degrees to 15 degrees may be used). The rotation speed of the hollow rotating body 87 is 10 rotations per minute (another rotation speed in the range of 5 rotations per minute to 15 rotations may be used).

The hollow rotator 87 is divided into two sections at a predetermined length ratio (1.5 to 1) in the axial direction, and the hollow rotator portion of the section corresponding to the one end is divided. In addition, a plurality of elongated oval-shaped sieves 88 are formed, and the pyrolysis residue that has not leaked from the sieves 88 is filled in the hollow rotary body 87 in the hollow rotary body portion of the section corresponding to the other end. A plurality of scraping blades 89 that are scraped up with the rotation of
(See FIG. 5).

Below the sieve 88, a first discharge guide 81 for the pyrolysis residue below the sieve is provided.
9 on the opposite side of the plurality of sieves 88, a residue outlet 101 above the sieve and a residue outlet 101 above the sieve
And a second discharge guide 82 facing the second discharge guide 82.

Each of the sieves 88 is set in an inclined position such that the lower side in the flow direction of the pyrolysis residue is located on the upper side, and as shown in FIG. The interval is set to be longer than the set distance, that is, longer than the general length 1 of the elongated pyrolysis residue such as the wire 78 (specifically, the separation distance L in FIG. 6 is 100 m).
The distance is set within a range of m to 300 mm).

Thus, the elongated pyrolysis residue such as the wire 78 straddles the adjacent sieve 88, that is, one end of the wire 78 is on one sieve and the other end is on the other sieve. 88 is less likely to be caught.

The scraping blade 89 has a structure in which a plurality of elongated plate members extending along the axial direction are fixed to the inner peripheral portion of the hollow rotary member 87 so as to be arranged at regular intervals in the circumferential direction of the hollow rotary member 87. I have.

Further, a coarse substance sieving section 105 for passing a coarse substance of the pyrolysis residue above the residue discharge port 101 over a sieve is provided, and the coarse substance sieving section 105 and the hollow rotary member 87 are provided. A discharge case 106 is provided to cover an opening at the other end of the discharge case 106, and a large-size discharge opening 83 is formed at the lower end of the discharge case 106.

As shown in FIG. 8, the large-size sieving section 105 includes a plurality of rod-like members 79 extending along the axial direction on the other end side in the axial direction of the hollow rotational body 87. It is configured to be cantilevered in a state of being aligned in the direction.

With the above structure, the horizontal hollow rotor 87
Receive the pyrolysis residue from the pyrolysis drum 12 from one end in the axial direction and rotate. Since the hollow rotator 87 is set in an inclined position in which one end side in the axial direction is higher than the other end side, the pyrolysis residue is rotated while receiving the rotational force around the axis in the hollow rotator 87. It goes to the other end side in the core direction.

The pyrolysis residue smaller than the sieve 88 leaks from the plurality of sieves 88, and the pyrolysis residue larger than the sieve 88 enters the side of the scraper 89, and While being scooped up with the rotation, it goes to the other end side in the axial direction, enters the residue discharge port 101 beyond the sieve, and is discharged.

The coarse substance among the pyrolysis residues is passed through the coarse substance sieving section 105 and above the residue discharge port 101 through the sieves, enters the large substance discharge port 83 and is discharged.

Hollow rotor 8 having a plurality of sieves 88
Since the pyrolysis residue is sieved while rotating 7, even if the elongated pyrolysis residue such as the wire 78 enters the sieve 88, it tends to come off the sieve 88 with the rotation of the hollow rotary member 87. As a result, for example, the frequency of cleaning the sieve 88 due to the wire 78 or the like being caught on the sieve 88 can be reduced, and the frequency of stopping the line for cleaning the sieve 88 can be reduced. .

Further, the carbon residue adhering to the large pyrolysis residue can be separated from the large pyrolysis residue by an impact when the scraped-up pyrolysis residue falls in the hollow rotary member 87.

Next, the structure around the rotary sieving machine 84 will be described.

The first discharge guide 81 of the rotary sieving machine 84
Is sent to a crusher 98, and then sent to a vibrating screen 97 having a sieve of 1 mm to separate foreign matter and carbon residue. The carbon residue is placed in a carbon residue silo 61, and the foreign matter is placed in a foreign matter bunker. Send to 91.

The pyrolysis residue from the second discharge guide 82 is sent to a magnetic separator 95, and irons are collected in an iron bunker 93.
The pyrolysis residues other than irons are sent to an aluminum sorter 96 and aluminum is collected in an aluminum bunker 96. The pyrolysis residue other than aluminum is sent to the vibrating screen 90. The foreign matter selected by the vibrating screen 90 is sent to the foreign matter bunker 91, and the pyrolysis residue other than the foreign matter is sent to the crusher 98. The bulky material discharged from the bulky material outlet 83 of the discharge case 106 is sent to a bulky material bunker 94.

The gas from the gas discharge port formed above the discharge case 106 is sent to the bag filter 66, and the dust is returned to the upper side of the crusher 98.

The carbon residue from the carbon residue silo 61 is blown into the high-temperature combustion melting furnace 13 from the furnace top side (see FIG. 1).

[Another Embodiment] The ratio between the length of the sieve group and the length of the scraping blade group in the axial direction of the hollow rotary member 87 is not limited to the above numerical value (1.5 to 1). .

As shown in FIG. 7A, the sieve 88
A cylindrical pyrolysis residue guide 104 for discharging and guiding the pyrolysis residue leaking from the hollow rotary member 87 for each sieve 88
May be continuously provided on the outer peripheral portion of.

The rotary sieving machine 84 includes the hollow rotary body 8
7, a sieve mesh group is formed in a portion extending over substantially the entire length, and a sieve or more residue discharge port 1 for discharging the pyrolysis residue that has not leaked from the sieve 88 at the other end of the hollow rotary member 87 in the axial center direction.
01 may be provided.

That is, the horizontal hollow rotator 87, which receives and accommodates the pyrolysis residue from the pyrolysis drum 12 from one end in the axial direction and rotates, is positioned such that one end in the axial direction is higher than the other end. A plurality of sieves 88 are formed on the hollow rotator 87 provided in the inclined position, and a sieve or more is provided at the other end of the hollow rotator 87 in the axial center direction to discharge the pyrolysis residue that has not leaked from the sieve 88. A residue discharge port 101 may be provided.

The shape and posture of the sieve 88 are not limited to the above shapes and postures.

As shown in FIGS. 9 (a) and 9 (b), the large-size sieving section 105 allows the large-size pyrolysis residue to pass over the sieve and above the residue discharge port 101, and , Sieves and other thermal decomposition residues other than bulky substances Residual outlet 1
01 may be provided with a spiral feed member 107 that is dropped.

The numerical values given in the above embodiments are merely examples, and may be other numerical values.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a pyrolysis gasification and melting plant.

FIG. 2 is a schematic longitudinal sectional front view of a pyrolysis drum facility.

FIG. 3 is a schematic diagram of a pyrolysis residue sorting facility.

FIG. 4 is a vertical sectional front view of a pyrolysis residue sorting apparatus.

FIG. 5 is a view taken along AA in FIG. 5;

FIG. 6 is a developed view showing a sieve.

FIG. 7 is a cross-sectional view of a sieve or the like in another embodiment.

FIG. 8 is a BB view in FIG. 5;

FIG. 9 is a front view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Pyrolysis reactor 79 Rod-shaped member 83 Coarse-matter discharge port 87 Hollow rotating body 88 Sieve 89 Scooping blade 101 Residual discharge outlet above sieve 104 Pyrolysis residue guide 105 Coarse-matter sieving section

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) F23G 5/027 ZAB F23G 5/027 ZABZ (72) Inventor Kohei Nakatani 2-33 Kingara-cho 2-chome, Amagasaki City, Hyogo Pref. Inside of Takuma (72) Inventor Masaaki Kurata 2-33, Kinrakuji-cho, Amagasaki-shi, Hyogo F-term in Takuma (Reference) 3K061 AA07 AA23 AB02 AB03 AC01 CA07 DA12 DA18 DA19 DB06 FA03 FA10 FA12 FA21 KA13 3K065 AA07 AA23 AB02 AB03 AC01 CA01 HA02 HA03 HA05 4D021 AA13 AB01 BA18 CA11 CB20 DA13 EA10 4H012 HA00 HB10

Claims (6)

[Claims] 1. A horizontal hollow rotating body that receives and accommodates a pyrolysis residue from a pyrolysis reactor from one end in an axial direction and rotates the hollow rotary body at one end in the axial direction at a higher position than the other end. Provided in an inclined position, forming a plurality of sieves in the hollow rotating body, and at the other end of the hollow rotating body in the axial direction, a sieve or more residue for discharging a pyrolysis residue that did not leak from the sieve. A pyrolysis residue sorting device with an outlet. 2. A horizontal hollow rotating body which receives and accommodates a pyrolysis residue from a pyrolysis reactor from one end in the axial direction and rotates the hollow rotary body at one end in the axial direction higher than the other end. Provided in an inclined posture, the hollow rotary body is divided into two sections at a predetermined length ratio in the axial direction, and a plurality of sieves are formed in the hollow rotary body portion of the section corresponding to the one end side. Along with the other end side, a predetermined number of scraping blades for scraping the pyrolysis residue that has not leaked from the sieve mesh with the rotation of the hollow rotating body, in the hollow rotating body portion of the section corresponding to the other end side. A pyrolysis residue sorting device provided with a residue discharge opening at a side opposite to the plurality of screens across the scraping blade. 3. A coarse substance sieving section for passing a coarse substance among the pyrolysis residues above the sieve and above a residue discharge port, and a coarse substance discharge port for the coarse substance is provided. 3. The apparatus for sorting thermal decomposition residues according to 2. 4. The large-size sieving section includes a plurality of rod-shaped members extending along the axis of the hollow rotating body arranged in the circumferential direction of the hollow rotating body on the other end side in the axial direction of the hollow rotating body. 4. The apparatus according to claim 3, wherein the apparatus is held and supported. 5. A tubular pyrolysis residue guide for discharging and guiding the pyrolysis residue leaking from the sieve is connected to the outer peripheral portion of the hollow rotary body. The apparatus for sorting thermal decomposition residues according to any one of the above. 6. The system according to claim 1, wherein the distance between the sieves adjacent in the axial direction is at least a set distance.
5. The apparatus for sorting thermal decomposition residues according to any one of 5.