WO2017098712A1 - 灰排出システム - Google Patents
灰排出システム Download PDFInfo
- Publication number
- WO2017098712A1 WO2017098712A1 PCT/JP2016/005050 JP2016005050W WO2017098712A1 WO 2017098712 A1 WO2017098712 A1 WO 2017098712A1 JP 2016005050 W JP2016005050 W JP 2016005050W WO 2017098712 A1 WO2017098712 A1 WO 2017098712A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clinker
- ash
- separator
- box
- discharge system
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/001—Ash removal, handling and treatment means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/002—Ash and slag handling in pulverulent fuel furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01001—Sorting and classifying ashes or fly-ashes from the combustion chamber before further treatment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01003—Ash crushing means associated with ash removal means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01009—Controls related to ash or slag extraction
Definitions
- the present invention relates to an ash discharge system for discharging ash from a boiler furnace bottom.
- coal fired boiler equipped with a furnace for burning finely pulverized coal.
- Some of the coal-burning ash particles generated in the boiler furnace melt and agglomerate with each other to form a porous mass (clinker ash) and fall to the furnace bottom.
- a water-sealed conveyor system that continuously discharges clinker ash by a water-sealed drag chain conveyor installed at the furnace bottom, or a dry type installed at the furnace bottom
- a dry clinker conveyor system that discharges continuously or intermittently with a clinker conveyor
- the conveyor apparatus described in Patent Document 1 includes a conveyor belt in which a collection region is located below the bottom opening of the boiler furnace, and a housing that surrounds the conveyor belt.
- the high temperature discharge discharged from the boiler furnace falls on the conveyor belt, and the high temperature discharge is cooled while being conveyed by the conveyor belt.
- Some large clinker sizes as described above have a long side of 1 m or more. Such a high-temperature large clinker may become clogged on the conveyor, and an operator may have to crush the large clinker with a burning stick or the like inserted through an inspection window provided on the conveyor.
- the inventors separated the large clinker from the flow of clinker ash conveyed along a predetermined path, discharged the large clinker to the outside of the apparatus, and the large clinker was removed.
- the idea was to send clinker ash to the conveyor.
- the present invention has been made in view of the above circumstances, and an object thereof is an ash discharge system for discharging ash from the bottom of a boiler furnace, and the flow of clinker ash from the bottom of the boiler furnace to a conveyor device.
- the purpose of the present invention is to propose a “large block clinker” that is a clinker exceeding a predetermined size from the clinker ash flow.
- An ash discharge system is an ash discharge system for discharging clinker ash from the bottom of a boiler furnace,
- a conveyor device for carrying out the clinker ash from below the furnace bottom; Passing through the large clinker which is provided in the flow path of the clinker ash from the furnace bottom to the conveyor device and allows the clinker ash having a size not larger than the predetermined size among the clinker ash to be passed and which exceeds the predetermined size.
- a separator having a separator for preventing the above.
- the large clinker that is a clinker exceeding a predetermined size can be separated and removed from the main stream of the clinker ash. Accordingly, only the clinker ash having a predetermined size or less falls on the conveyor device, and the conveyance path in the conveyor device can be prevented from being blocked by the massive clinker.
- the separation device includes an inlet through which the clinker ash flows, an outlet through which the clinker ash flows out to the conveyor device, and a box provided with a discharge port through which the massive clinker is discharged.
- a discharge valve device that opens and closes the discharge port, and the separator may be provided in a flow path of the clinker ash from the inlet to the outlet.
- the massive clinker separated from the main stream of clinker ash by the separation device can be discharged out of the device through the discharge port. Therefore, generation
- each of the vertical line of the opening surface of the outlet and the vertical line of the opening surface of the discharge port has an inclination from a vertical direction, and has a horizontal component in a direction in which the inclinations of the normal lines are opposite to each other.
- the outlet and the outlet may be formed at the bottom of the box, and the separator may be disposed so as to close the opening surface of the outlet.
- the massive clinker is separated from the main stream of the clinker ash while the clinker ash rolls over the separator, and the clinker ash that has passed through the separator passes through the outlet and is sent to the conveyor device 4. Then, the separated massive clinker can reach the discharge port formed at the bottom of the box opposite to the outlet and be discharged from the discharge port.
- a refractory material may be attached to the box.
- the box forming the clinker ash flow path can be provided with heat resistance and fire resistance that can cope with high temperature clinker ash.
- the separation device may further include an enclosure that surrounds the discharge port of the box, and the large clinker may be discharged into the enclosure through the discharge port.
- the diffusion of dust generation accompanying the discharge of the large block clinker from the separation device is prevented, and the high temperature block clinker can be isolated from the outside. Further, since the enclosure forms a closed space including the inside of the separation device, it is easy to maintain the negative pressure in the boiler furnace.
- the separation device includes a sensor that detects the large clinker staying at or near the discharge port, and the discharge valve device has a predetermined amount of the large clinker by the sensor. It may be configured to open the outlet when detected.
- the massive clinker can be automatically discharged from the separation device, and clogging of the separation device can be avoided.
- the ash discharge system may further include a charging valve device that is provided in the clinker ash flow path to the furnace bottom and the separation device and opens and closes the flow path.
- the charging valve device can switch between the charging and stopping of the separation device and the clinker ash to the downstream thereof.
- the separator may include a casing that is detachably coupled to a box that forms a flow path of the clinker ash from the furnace bottom to the conveyor device.
- the ash discharge system may further include a base having a plurality of wheels and a support portion for supporting the separator not attached to the box in the same posture as when attached to the box.
- the separator can be moved in a posture to be attached to the box, so that the separator can be easily attached and detached.
- a large clinker that is a clinker exceeding a predetermined size can be separated from the clinker ash flow in the clinker ash flow path from the bottom of the boiler furnace to the conveyor device.
- FIG. 1 is a conceptual diagram showing a schematic configuration of an ash discharge system according to an embodiment of the present invention.
- FIG. 2 is a conceptual diagram showing a schematic configuration of an ash discharge system according to a modification.
- the ash discharge system 1 is a system for carrying out clinker ash (bottom ash) that has fallen to the bottom of the boiler furnace 10 from the boiler furnace 10.
- the ash discharge system 1 generally includes a hopper 2, a separation device 3, and a conveyor device 4 from the upstream side to the downstream side along the flow of clinker ash movement.
- the hopper 2 receives the clinker ash falling from the boiler furnace 10 and discharges it to the downstream side (that is, the separation device 3).
- the hopper 2 is disposed below the boiler furnace 10 and is connected to the bottom of the boiler furnace 10.
- the separation device 3 receives the clinker ash discharged from the hopper 2, and the clinker ash exceeding a predetermined size from the main stream (main stream) of the clinker ash (hereinafter referred to as “large block clinker” for convenience of explanation). The remaining clinker ash is discharged to the downstream side (that is, the conveyor device 4).
- the structure of the separation device 3 will be described in detail later.
- the clinker ash flow path between the hopper 2 and the separation device 3 or the clinker ash flow path from the hopper 2 to the separation device 3 is switched between charging and stopping of the clinker ash to the separation device 3,
- a charging valve device 21 capable of adjusting the amount of clinker ash charged into the separation device 3 is provided.
- the conveyor device 4 conveys the clinker ash that has passed through the separation device 3 to the downstream side while cooling.
- the conveyor device 4 includes a casing 41 and a conveyor transport unit 42 that is built in the casing 41.
- the clinker ash that has fallen to the furnace bottom of the boiler furnace 10 passes through the hopper 2 and is introduced into the separation device 3.
- the massive clinker is separated from the main stream of clinker ash by the separating device 3, and the main stream of clinker ash from which the large clinker clinker has been removed is discharged to the conveyor device 4.
- the clinker ash introduced into the conveyor device 4 is conveyed downstream by the conveyor conveyance unit 42.
- the clinker ash carried out from the furnace bottom of the boiler furnace 10 by the conveyor device 4 may be finely crushed by a crusher (not shown) or may be collected by a collection hopper (not shown).
- the hopper 2 has one or a plurality of cone portions 24 corresponding to the length of the boiler furnace 10 in the longitudinal direction.
- a closing valve device 21 is provided at or below the outlet 20 of each cone portion 24.
- the closing valve device 21 according to the present embodiment is composed of a plurality of flaps 22 and their driving means 23, and temporarily closes the flaps 22 and shuts off the flow path in an emergency to temporarily remove clinker ash in the hopper 2. Can be put on hold.
- the closing valve device 21 operates the flap 22 to adjust the opening degree of the closing valve device 21 in a stepless or stepwise manner from closing to full opening, thereby adjusting the flow rate of the clinker ash. You may be comprised so that it can do.
- An inlet 30 of a box 31 that forms a flow path of clinker ash in the separation device 3 is connected to the outlet 20 of the cone portion 24 of the hopper 2.
- the box body 31 has a hopper shape (funnel shape) whose cross-sectional area decreases as it goes downward.
- a fireproof material 313 having impact resistance may be attached inside the box 31.
- the box body 31 is provided with an inlet 30 through which the clinker ash flows, an outlet 36 through which the clinker ash flows out toward the conveyor device 4, and an outlet 35 through which the massive clinker is discharged.
- the box body 31 has a first bottom portion 71 inclined from the horizontal and a second bottom portion 72 inclined from the horizontal in a direction opposite to the first bottom portion 71.
- the first bottom portion 71 and the second bottom portion 72 intersect at the bottom portion of the box body 31, whereby the bottom portion of the box body 31 is tapered.
- An outlet 36 of the box 31 is opened at the first bottom 71 of the box 31.
- a discharge port 35 of the box body 31 is opened at the second bottom portion 72 of the box body 31.
- Each of the perpendicular line P1 of the opening surface of the outlet 36 and the perpendicular line P2 of the opening surface of the discharge port 35 has an inclination from the vertical direction, and the inclinations of these perpendicular lines P1 and P2 have horizontal components in opposite directions.
- the separator 33 is arrange
- the opening surface refers to a virtual plane formed by the opening edge.
- the first bottom portion 71 is located on the extension line of the center line C of the inlet 30, and the second bottom portion 72 is located in a position away from the extension line of the center line C of the inlet 30 in the horizontal direction. Yes. As a result, the main stream of clinker ash introduced into the box 31 of the separation device 3 is prevented from dropping directly into the discharge port 35.
- the separator 33 allows passage of clinker ash having a predetermined size or less and prevents passage of clinker ash (large block clinker) exceeding a predetermined size.
- the upper surface of the separator 33 is inclined 35 to 60 degrees from the horizontal so that the clinker ash that has fallen is sieved while rolling over it.
- the separator 33 according to the present embodiment is composed of a plurality of grizzly bars arranged in parallel, and the interval between the grizzly bars (ie, sieve mesh) is a value in the range of 200 to 400 mm.
- the clinker ash that cannot pass through the separator 33 that is, the clinker ash having a minimum side dimension larger than the mesh size is the “large clinker”.
- the structure of the separator 33 and the size of the mesh are not limited to the above, and the dimension of the minimum side that defines the large clump clinker also changes according to the size of the mesh of the separator 33.
- the inlet of the chute 32 is connected to the lower surface of the separator 33.
- the outlet of the chute 32 is connected to the casing 41 above the conveyor transport section 42 of the conveyor device 4.
- the chute 32 coupled to the separator 33 forms a passage for sending the clinker ash that has passed through the separator 33 to the conveyor device 4.
- the massive clinker that cannot pass through the separator 33 rolls down on the upper surface of the separator 33 and reaches a discharge port 35 that is located at the tip of the separator 33.
- the lowest position of the discharge port 35 is the same as or lower than the lowest position of the inlet of the chute 32.
- the discharge port 35 is provided with a discharge valve device 38 that opens and closes the discharge port 35.
- the discharge valve device 38 according to the present embodiment includes a flap 381 that can close the discharge port 35, a drive mechanism 382 thereof, and a control device 383.
- the drive mechanism 382 is, for example, a hydraulic cylinder.
- the separation device 3 includes a sensor 384 that detects a large clinker that has reached the discharge port 35.
- This sensor is, for example, a weight sensor that detects a change in load applied to a flap 381 provided in the discharge valve device 38, an object detection sensor that detects an object in the discharge port 35, and an image or video of the discharge port 35 that is captured by the camera.
- the control device 383 of the discharge valve device 38 controls the drive mechanism 382 to operate the flap 381 so that the discharge port 35 is opened when the sensor 384 detects a predetermined amount of massive clinker.
- the operator may visually check the presence or absence of the massive clinker existing in the storage space 37 through the inspection window 39 provided in the box 31 and the operator may manually operate the discharge valve device 38.
- the control device 383 of the discharge valve device 38 may be configured to open the discharge port 35 at a predetermined time interval measured by a timer.
- the discharge port 35 is provided with an enclosure 62 surrounding the discharge port 35.
- the enclosure 62 forms a closed space including the inside of the separation device 3 leading to the boiler furnace 10.
- a container 61 is provided below the discharge port 35 to accommodate the massive clinker that has fallen through the discharge port 35.
- the enclosure 62 is provided with an entrance / exit 621 for carrying the container 61 out of the enclosure 62.
- the clinker ash introduced into the box 31 from the hopper 2 falls onto the upper surface of the separator 33.
- the clinker ash that has passed through the separator 33 passes through the chute 32 and is fed into the conveyor device 4.
- the massive clinker that could not pass through the separator 33 rolls down the upper surface of the separator 33 and reaches the discharge port 35.
- the discharge port device 38 opens the discharge port 35 that is closed in a steady state.
- the discharge port 35 is opened, the massive clinker is discharged from the box 31 through the discharge port 35 and is dropped into the container 61 and stored. In this way, the large clinker is separated from the main stream of clinker ash of the ash discharge system 1 by the separation device 3, and the separated large clinker is recovered.
- the separator 33 receives a strong impact from the clinker ash that has fallen from the hopper 2, so that fatigue and deformation are larger than those of other components, and the separator 33 is periodically used to maintain its function. Or it is exchanged as necessary. Therefore, the separator 33 is configured to be detachable from the box 31 so that maintenance work including replacement of the separator 33 is easy.
- the separator 33 has a casing 33 a that can be attached to and detached from the box 31.
- the casing 33a is coupled to the box body 31 and the chute 32 by fasteners (not shown) including bolts and nuts.
- the casing 33 a forms a part of the clinker ash flow path from the furnace bottom of the boiler furnace 10 to the conveyor device 4.
- the separation device 3 may include a temporary placement table 45 that supports the separator 33 that is removed from the box 31 during maintenance (that is, not attached to the box 31). Good.
- the temporary table 45 may be installed on the separation device 3 or may be used only during maintenance.
- the casing 33a of the separator 33 is attached to the box 31 in a posture inclined from the horizontal in accordance with the inclination of the opening of the outlet 36 of the box 31.
- the temporary placement table 45 includes a support portion 45 a that supports the separator 33 in a posture inclined from the horizontal as in the case where the separator 33 is attached to the box body 31.
- the temporary placing table 45 can move the support portion 45a, that is, the separator 33 supported by the support portion 45a.
- the temporary placing table 45 according to the present embodiment is a travelable carriage including a plurality of wheels 45b, the temporary placing table 45 is not limited to the above as long as the support unit 45a can be moved.
- the temporary placing table 45 may be a lifting table provided with a jack capable of moving up and down the support portion 45a.
- the separator 33 supported by the temporary placement table 45 is inclined from the horizontal as in the case of being attached to the box 31. As described above, if the temporary placement table 45 is used, the separator 33 can be moved in a posture to be attached to the box 31, so that the separator 33 can be easily attached and detached.
- the temporary placement table 45 is placed on the support frame 46.
- the temporary table 45 can move forward and backward with respect to the outlet 36 of the box 31 by traveling on the support frame 46.
- the temporary table 45 may be provided with an elevating device (not shown) that raises and lowers the support portion 45a up and down.
- the temporary placement table 45 can bring the separator 33 closer to the box 31 up to the mounting position of the separator 33 in the box 31.
- the temporary placing table 45 can move the separator 33 away from the box body 31 to a position where the separator 33 does not interfere with the box body 31 and the conveyor device 4.
- the support frame 46 may be provided across the conveyor device 4 or may be omitted by providing legs on the temporary placement table 45.
- the ash discharge system 1 of the present embodiment includes the conveyor device 4 that carries out the clinker ash from the bottom of the furnace bottom of the boiler furnace 10, and the clinker ash flow path from the furnace bottom to the conveyor device 4. And a separation device 3 having a separator 33 that allows passage of clinker ash having a size equal to or smaller than a predetermined size among the clinker ash and prevents passage of large clinker ash that is larger than a predetermined size.
- the ash discharge system 1 of this embodiment in the clinker ash flow path from the furnace bottom of the boiler furnace 10 to the conveyor device 4, a large block clinker that is a clinker exceeding a predetermined size is separated from the main stream of clinker ash. . Therefore, only the clinker ash having a predetermined size or less falls on the conveyor device 4, and the conveyor device 4 can be prevented from being blocked by the massive clinker. In addition, since the impact of the clinker ash falling on the conveyor device 4 is reduced, the impact resistance of the conveyor device 4 is reduced compared to a conventional conveyor configured to transport large clinker. Since the width and height of the device 4 can be reduced, this also improves the flexibility of the layout of the ash discharge system 1.
- the separation device 3 is provided with an inlet 30 through which the clinker ash flows, an outlet 36 through which the clinker ash flows into the conveyor device 4, and a discharge port 35 through which the massive clinker is discharged. And a discharge valve device 38 that opens and closes the discharge port 35.
- the discharge port 35 by opening the discharge port 35 with the discharge valve device 38, the massive clinker separated from the main stream of clinker ash can be discharged out of the separation device 3 through the discharge port 35. Therefore, occurrence of clogging due to the large clinker in the separating apparatus 3 can be avoided, and even if clogging occurs, it can be easily removed.
- each of the perpendicular P1 of the opening surface of the outlet 36 and the perpendicular P2 of the opening surface of the discharge port 35 has an inclination from the vertical direction, and the inclination of these perpendicular lines P1 and P2
- the outlet 36 and the outlet 35 are formed at the bottom of the box 31 so as to have horizontal components in the opposite directions.
- the separator 33 is arrange
- the massive clinker is separated from the main stream of the clinker ash while the clinker ash rolls over the separator 33, and the clinker ash that has passed through the separator 33 passes through the outlet 36 and is sent to the conveyor device 4. .
- the separated massive clinker reaches a discharge port 35 formed at the bottom of the box body 31 opposite to the outlet 36, and reaches a discharge port 35 formed at the bottom of the box body 31 opposite to the outlet 36. It can be discharged from the outlet 35.
- a discharge port 35 is formed on the opposite side of the outlet 36 at the bottom of the box 31 of the box 31, a space (here, the enclosure 62) for discharging the large clinker from the discharge port 35 is used as a box. It can be secured adjacent to the body 31.
- a refractory material 313 is affixed to the box 31.
- the box body 31 forming the clinker ash flow path can be provided with heat resistance and fire resistance that can cope with high-temperature clinker ash.
- the separation device 3 further includes an enclosure 62 that surrounds the discharge port 35 of the box 31, and is configured to discharge the massive clinker into the enclosure 62 through the discharge port 35. Has been.
- the massive clinker discharged from the separation device 3 through the discharge port 35 is discharged into the space sealed by the enclosure 62. Therefore, the diffusion of the dust generation accompanying the discharge of the large clinker is prevented, and the high temperature large clinker can be isolated from the outside.
- the separation device 3 includes a sensor that detects a large block clinker staying at or near the discharge port 35, and the discharge valve device 38 has a large amount of a predetermined amount by the sensor. When the block clinker is detected, the discharge port 35 is opened.
- the massive clinker can be automatically discharged from the separation device 3, and clogging of the separation device 3 can be avoided.
- the generation frequency of large clinker is not high, once it occurs, the normal flow of clinker ash in the ash discharge system 1 is inhibited. Therefore, when the massive clinker is automatically discharged in this way, the labor of the operator can be reduced and the stable operation of the ash discharge system 1 can be maintained.
- the ash discharge system 1 of the present embodiment is further provided with a closing valve device 21 that is provided in the clinker ash flow path to the furnace bottom of the boiler furnace 10 and the separator 3 and opens and closes this flow path.
- the charging valve device 21 can be used to switch between the charging and stopping of the separation device 3 and the clinker ash downstream thereof. Therefore, for example, when the separation device 3 or the device provided downstream thereof is malfunctioning, the closing valve device 21 can close the clinker ash flow path for maintenance.
- the separator 33 is a casing 33a that is detachably coupled to the box 31 that forms the clinker ash flow path from the bottom of the boiler furnace 10 to the conveyor device 4. have.
- the separator 33 can be removed from the box 31 together with the casing 33a when the separator 33 is replaced. Further, the separator 33 can be exchanged together with the casing 33a. Thereby, the attaching / detaching operation and the maintenance operation of the separator 33 are facilitated.
- the temporary placement table (base) 45 having a support portion 45a that supports the separator 33 that is not attached to the box body 31 in the same posture as when the box body 31 is mounted.
- the separator 33 not attached to the box 31 includes a separator 33 removed from the box 31 and a separator 33 attached to the box 31 from now on.
- the separator 33 removed from the box body 31 can be handled in the same posture as when attached to the box body 31, so that the separator 33 can be easily attached and detached and maintained. It becomes.
- the ash discharge system 1 employs a conveyor system that takes out ash from the boiler furnace 10 in a dry manner.
- the configuration of the separation device 3 according to the ash discharge system 1 can also be applied to a water-sealed (wet) conveyor type ash discharge system.
- a water-sealed clinker hopper is used as the hopper 2 having the above-described configuration, and a water-sealed scraper conveyor device or a water-sealed chain conveyor is used as the conveyor device 4.
- An apparatus may be used.
- Ash discharge system 2 Hopper 3: Separation device 4: Conveyor device 5: Crusher 10: Boiler furnace 21: Input valve device 30: Inlet 31: Box body 32: Chute 33: Separator 35: Discharge port 36: Outlet 38 : Discharge valve device 45: Temporary stand (unit) 61: Container 62: Enclosure 71: First bottom 72: Second bottom 381: Flap 382: Drive mechanism
Abstract
Description
前記炉底の下方から前記クリンカ灰を搬出するコンベヤ装置と、
前記炉底から前記コンベヤ装置までの前記クリンカ灰の流路に設けられ、前記クリンカ灰のうち所定サイズ以下のクリンカ灰の通過を許容し且つ前記所定サイズを超えるクリンカ灰である大塊状クリンカの通過を阻止するセパレータを有する分離装置とを、備えることを特徴としている。
2 :ホッパ
3 :分離装置
4 :コンベヤ装置
5 :破砕機
10 :ボイラ火炉
21 :投入バルブ装置
30 :入口
31 :箱体
32 :シュート
33 :セパレータ
35 :排出口
36 :出口
38 :排出バルブ装置
45 :仮置き台(台)
61 :コンテナ
62 :エンクロージャ
71 :第1底部
72 :第2底部
381 :フラップ
382 :駆動機構
Claims (9)
- ボイラ火炉の炉底からクリンカ灰を排出する灰排出システムであって、
前記炉底の下方から前記クリンカ灰を搬出するコンベヤ装置と、
前記炉底から前記コンベヤ装置までの前記クリンカ灰の流路に設けられ、前記クリンカ灰のうち所定サイズ以下のクリンカ灰の通過を許容し且つ前記所定サイズを超えるクリンカ灰である大塊状クリンカの通過を阻止するセパレータを有する分離装置とを、備える、灰排出システム。 - 前記分離装置は、前記クリンカ灰が流入する入口、前記コンベヤ装置へ前記クリンカ灰が流出する出口、及び、前記大塊状クリンカを排出する排出口が設けられた箱体と、前記排出口を開閉する排出バルブ装置とを有し、前記入口から前記出口までの前記クリンカ灰の流路に前記セパレータが設けられている、
請求項1に記載の灰排出システム。 - 前記出口の開口面の垂線及び前記排出口の開口面の垂線の各々が鉛直方向からの傾きを有し、これらの垂線の傾きが相反する向きの水平方向成分を有するように、前記出口及び前記排出口が前記箱体の底部に形成されており、
前記出口の開口面を塞ぐように前記セパレータが配置されている、
請求項2に記載の灰排出システム。 - 前記箱体に耐火材が内貼りされている、
請求項2又は3に記載の灰排出システム。 - 前記分離装置は、前記箱体の前記排出口を囲うエンクロージャを更に有し、前記大塊状クリンカを前記排出口を通じて前記エンクロージャ内に排出するように構成されている、
請求項2~4のいずれか一項に記載の灰排出システム。 - 前記分離装置は、前記排出口又はその近傍に滞留している前記大塊状クリンカを検出するセンサを備え、
前記排出バルブ装置は、前記センサにより所定量の前記大塊状クリンカが検出されると、前記排出口を開放するように構成されている、
請求項2~5のいずれか一項に記載の灰排出システム。 - 前記炉底と前記分離装置までの前記クリンカ灰の流路に設けられ、この流路を開閉する投入バルブ装置を更に備える、
請求項1~6のいずれか一項に記載の灰排出システム。 - 前記セパレータは、前記炉底から前記コンベヤ装置までの前記クリンカ灰の流路を形成している箱体に着脱可能に結合されたケーシングを有している、
請求項1~7のいずれか一項に記載の灰排出システム。 - 前記箱体に取り付けられているときと同じ姿勢で前記箱体に取り付けられていない前記セパレータを支持する支持部を有する台を更に備えている、請求項8に記載の灰排出システム。
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CN108369004A (zh) | 2018-08-03 |
CN108369004B (zh) | 2020-03-03 |
EP3388745B1 (en) | 2023-06-28 |
TWI640723B (zh) | 2018-11-11 |
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