JP4427468B2 - Foreign matter mixed ash treatment equipment - Google Patents

Description

The present invention is attached to an ash treatment facility that collects ash collected by a dust collector, and processing foreign matter-containing ash that collects foreign matter (for example, iron powder and iron rust) generated during cleaning of the hopper of the ash treatment facility together with the ash. Relates to the device.

Conventionally, fly ash present in exhaust gas generated from coal-fired thermal power plants or heavy oil ash present in exhaust gas generated from petroleum-powered thermal power plants is collected by a dust collector and temporarily stored in a hopper. After being stored, it is collected into an ash reservoir through a transfer pipe and recycled (for example, see Patent Document 1).

JP-A-8-291909

Here, when cleaning the hopper of the ash treatment facility, the generated foreign matter is mixed with the ash remaining in the hopper. For this reason, when restarting the operation of the ash treatment facility, the ash containing the foreign matter in the hopper is discharged into the transfer pipe and manually removed from a plurality of inspection holes provided in the transfer pipe. For this reason, it took a long time to remove ash containing foreign matter. In addition, since the ash has a small particle size, there is a problem that the ash scattering is intense when the ash containing foreign matters is discharged from the transfer pipe, and the working environment is extremely deteriorated.

The present invention has been made in view of such circumstances, and foreign matter-contaminated ash that can prevent foreign matter generated during cleaning of a hopper of an ash treatment facility from being scattered together with ash in a short time by preventing ash scattering. An object of the present invention is to provide a processing apparatus.

Processor of contamination ashes according to claim 1 is a transfer pipe for ash arranged below the hopper for temporarily storing the ash collected by the dust collector is discharged from the hopper to the air transport,
An air dryer provided upstream of the transfer pipe and attached to an air supply source having an air intake;
An ash take-off valve that is provided in the transfer pipe on the downstream side of the hopper and guides the ash containing foreign matter conveyed by the transfer pipe to the outside of the transfer pipe;
A high-pressure water ejector that draws ash containing foreign matter taken out of the transfer pipe by the ash take-off valve by flowing high-pressure water to create a decompression space;
A cyclone for separating the ash containing foreign matter to which water has been added by the high-pressure water ejector from the carrier air;
A gas introduction pipe for guiding the carrier air into a pit formed in the floor;
A screen that is disposed at a lower portion of the cyclone, separates the carrier air, removes water from the ash containing foreign matter to which water has been added, and collects the ash containing wetted foreign matter .

In the processing apparatus of contamination ashes according to claim 1 is ash containing foreign matter with the addition of water by high-pressure water ejector air transport, the cyclone, and ash and conveying air containing water is added foreign matter separating Further, since the water is removed from the ash containing the foreign matter to which water has been added by the screen, the foreign matter can be reliably and easily collected together with the ash in a short time while preventing the ash from scattering. As a result, when the operation of the ash treatment facility is resumed, it is possible to prevent the transfer pipe from being blocked by a foreign substance and the ash reservoir from being damaged.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is a plan view of an ash treatment facility provided with a foreign matter-contaminated ash treatment apparatus according to an embodiment of the present invention, and FIGS. 2A and 2B are the foreign matter-contaminated ash treatment apparatus. FIG. 3 is a side view showing the connection state between the hopper and the transfer pipe of the ash treatment facility provided with the ash, an enlarged partial sectional view, FIG. 3 is a side view of the foreign matter mixed ash treatment device, and FIG. FIG. 5 is a plan sectional view of the main body of the high-pressure water ejector of the foreign substance-contaminated ash treatment apparatus, and FIG. 6 is a partially cutaway view of the solid matter separating means of the foreign substance-contained ash treatment apparatus. FIG.

As shown in FIGS. 1 and 2, a foreign matter-mixed ash treatment apparatus 10 according to an embodiment of the present invention temporarily stores ash collected by a plurality of dust collectors (not shown) (for example, electric dust collectors). For example, a plurality of (three in FIG. 1) hoppers 11 arranged in two rows, and an air drying unit provided below the hoppers 11 in each row and provided with ash discharged from the hoppers 11 on the upstream side. An ash treatment facility 16 having transfer pipes 14 and 15 for pneumatically transporting using air supplied from an air supply source 13 including a machine 12 and a reservoir (not shown) of ash conveyed by the transfer pipes 14 and 15. It is a device attached and used.

The foreign matter mixed ash treatment apparatus 10 is provided in the transfer pipes 14 and 15 on the downstream side of the hopper 11 and takes out the ash containing the foreign matters conveyed by the transfer pipes 14 and 15 to the outside of the transfer pipes 14 and 15. A high-pressure water ejector 19 that draws ash containing foreign matter taken out from the transfer pipes 14 and 15 by the ash removal valves 17 and 18 and a high-pressure water ejector 19 The ash containing the foreign matter to which water has been added is separated from the carrier air, and is further provided with a solid material separating means 21 for removing the water over a screen 20 (see FIG. 6). Hereinafter, these will be described in detail.

As shown in FIG. 2, the hopper 11 is provided below the dust collection unit of each dust collector and has, for example, a truncated cone shape with a reduced diameter at the lower part. A discharge portion 22 is provided in a substantially vertical direction below the hopper 11, and one end of an ash discharge pipe 23 is connected to the discharge portion 22. Further, a swing damper 25 is provided at a discharge port 24 provided at the lower end of the discharge portion 22 so as to protrude into the ash discharge pipe 23. Here, the swing damper 25 has a lid 26 that contacts the edge of the discharge port 24 to close the discharge port 24, and one front portion is attached to the lower portion of the lid 26 via a support pin 27, and the other front portion. An arm 28 whose side is taken out from the ash discharge pipe 23, a support shaft 29 that is inserted through the arm 28 and supports the arm 28 so as to be tiltable, and a cylinder (not shown) connected to the other tip of the arm 28 are provided. ing.

With this configuration, by driving the cylinder, one end of the arm 28 can be tilted with the support shaft 29 as a fulcrum, and the lid 26 is attached to the edge of the discharge port 24 accordingly. They can be brought into contact with each other or separated from the edge of the discharge port 24. Therefore, the ash stored in the hopper 11 can be discharged from the discharge port 24 by detaching the cover 26 from the edge of the discharge port 24, and the cover 26 is brought into contact with the edge of the discharge port 24. As a result, the outflow of the ash from the discharge port 24 can be stopped. Since the lid 26 can be tilted with the support pin 27 as a fulcrum, the lid 26 can be reliably brought into contact with the edge of the discharge port 24.

The transfer pipe 14 (15) includes flange connection portions on both sides in the horizontal direction, and the other end of the ash discharge pipe 23 is connected substantially vertically, and the adjacent connection pipes 33 are connected to each other via a flange. The straight pipe 34 to be connected, and the ash take-out pipe 35 for connecting the most downstream connecting pipe 33 and the ash reservoir are provided.
Note that an inspection section 38 including a branch pipe 37 that protrudes obliquely downward and has a seal plate member 36 attached to the opening at the tip is provided at the lower portion of each connection pipe 33. In addition, an air introduction pipe 39 is connected to the upstream flange connection portion of the most upstream connecting pipe 33, and an air supply source 13 is connected to an end of the air introduction pipe 39 via an on-off valve 40. Further, each ash take-out pipe 35 of the transfer pipes 14 and 15 is connected to an ash main transfer pipe 42 provided in an ash reservoir via a flow path switching valve 41 (for example, a three-way valve).

With such a configuration, the ash discharged from the hoppers 11 into the connecting pipes 33 through the air supplied from the air supply source 13 through the transfer pipe 14 (15) is passed through the ash take-out pipe 35. The ash transported into the ash take-out pipe 35 can further flow into the ash reservoir via the flow path switching valve 41 and the ash main transfer pipe 42. Further, by removing the seal plate member 36 from the inspection portion 38, the state of the ash discharged into the connecting pipe 33 can be grasped, and the ash is brought into contact with the edge of the discharge port 24. For example, the degree of adhesion of the lid 26 can be adjusted so that the liquid does not flow into the connecting pipe 33.

As shown in FIG. 1, the ash removal valve 17 (18) of the foreign matter-containing ash treatment apparatus 10 is disposed at a transfer pipe 14 (15) on the downstream side of the hopper 11, that is, an ash removal pipe 35, for example, at an intermediate portion. A first connection port 43 provided to communicate with the upstream portion of the ash take-out pipe 35 from the ash take-out valve 17 (18) and a first connection port 43 communicated with the downstream portion from the ash take-out valve 17 (18) of the ash take-out pipe 35. 2 connection ports 44 and a third connection port 45 communicating with the outside of the ash take-out pipe 35. Further, the ash take-out valve 17 (18) communicates the first connection port 43 and the second connection port 44 and blocks the first connection port 43 and the third connection port 45, or the first connection port. A connection switching unit 46 is provided that allows the port 43 and the third connection port 45 to communicate with each other and blocks the first connection port 43 and the second connection port 44. As the ash removal valve 17 (18), for example, a three-way valve can be used.

Accordingly, when the ash does not contain foreign matter, the connection switching unit 46 of the ash removal valve 17 (18) is operated to connect the upstream portion of the ash removal tube 35 and the downstream portion of the ash removal tube 35, The ash can be conveyed to the ash reservoir via the ash take-out pipe 35 and the flow path switching valve 41. If the ash contains foreign matter, the ash take-out valve 17 (18) is operated to connect the upstream portion of the ash take-out pipe 35 and the outside of the ash take-out pipe 35 to remove the ash containing the foreign matter. Can be led out of the ash take-out pipe 35 from the connection port 45.

As shown in FIGS. 1, 3, and 4, the high-pressure water ejector 19 includes guide pipes 47 and 48 that are flange-connected to the third connection ports 45 of the ash take-out valves 17 and 18, respectively, 48, an ejector body 51 that communicates in a substantially oblique direction from both sides via shut-off valves 49, 50, a high-pressure water supply means 52 provided at one end of the ejector body 51, and an ejector body It has a discharge pipe 53 provided on the other side of 51. With such a configuration, by operating the shut-off valves 49 and 50, ash containing foreign substances can be alternately taken out from both the transfer pipes 14 and 15.

As shown in FIGS. 4 and 5, the ejector main body 51 has a cylindrical body in which connection ports 54 and 55 with the shut-off valves 49 and 50 are formed so as to protrude substantially obliquely at 45 ° toward one side. And an end plate member 58 for fixing and fixing a fixing member 57 provided on one side of the cylindrical body portion 56 and provided in the high-pressure water supply means 52. Further, the ejector body 51 has a connecting portion 59 connected to the other side of the cylindrical body portion 56 via a flange and connected to the base portion of the discharge pipe 53.
The high pressure water supply means 52 includes a high pressure water introduction pipe 61 in which a fixing member 57 is attached to an intermediate portion in the longitudinal direction and a nozzle 60 is provided at the tip, and a pressure connected to the high pressure water introduction pipe 61 with a flange (not shown). A pressure detection tube 62 for holding the meter is provided. Further, the high-pressure water supply means 52 is connected to the flow rate adjusting valve 63 attached to the pressure detection pipe 62 and adjusts the flow rate of the high-pressure water, and is connected to the flow rate adjusting valve 63 (for example, the pressure is 6 to 12 kg / cm ² ). And a high pressure water supply pipe 66 connected to the main valve 64 via a connecting pipe 65.

With such a configuration, high-pressure water can be ejected from the high-pressure water introduction pipe 61 toward the inlet of the discharge pipe 53. At this time, the high-pressure water ejected from the high-pressure water introduction pipe 61 moves in the ejector body 51 at a high speed and flows into the discharge pipe 53, so that the pressure in the ejector body 51 through which the high-pressure water passes decreases. For this reason, the ash removal valve 17 (18) is operated to connect the first connection port 43 and the third connection port 45 to open the shut-off valve 49 (50) to carry the ash containing foreign matter. And then transferred through the transfer pipe 14 (15), the ash removal valve 17 (18) can be taken out from the third connection port 45 to the outside of the transfer pipe 14 (15). It can be drawn into the ejector body 51 together with the carrier air. Then, the ash containing the foreign matter drawn into the ejector body 51 and the carrier air are mixed into the flow of high-pressure water and flow into the discharge pipe 53 as a solid-gas liquid mixture.

As shown in FIGS. 1, 3, and 6, the solid separation means 21 is connected to the discharge pipe 53 of the high-pressure water ejector 19, and an ash collection pipe 67 that takes out the solid-gas-liquid mixture flowing into the discharge pipe 53, And an ash recovery pipe 67.
Here, the ash collection pipe 67 is disposed above the floor 70 by a plurality of pipe mounts 69, and a drain vent valve 71 operated at the time of maintenance is provided on the upstream side of the ash collection pipe 67. It flows out into pits 72 formed on the floor 70. Further, a drain vent valve 71a operated at the time of maintenance is also provided on the downstream side of the ash recovery pipe 67, and the discharged drain flows out into a side groove 85 formed in the floor 70.
The solid matter separation unit 68 has a connection port 73 to the ash recovery pipe 67 on the side, a cyclone 74 that separates the carrier air from the solid-gas / liquid mixture and discharges ash containing foreign matter to which water has been added, and a cyclone 74. A solid-liquid separator 76 having a screen 20 that collects the ash containing the foreign matter wet by removing the water from the ash containing the foreign matter to which water discharged from the discharge port 75 provided in the lower part is added. ing.

In addition, the cyclone 74 is fixed on a gantry 78 provided with movable wheels 77 on both sides of the front and rear sides via attachment members 79, and the solid-liquid separator 76 is attached to the lower part of the gantry 78. It arrange | positions along the guide member 80 provided according to the attachment position. Further, the solid-liquid separator 76 includes a connecting portion 81 into which the discharge port 75 of the cyclone 74 is inserted at the top, and a cylindrical main body having a screen 82 made of, for example, a metal mesh attached to the inside of the side wall. The screen 20 is attached to the lower part of the main body 83.

Accordingly, when the ash containing the foreign matter to which water is added is discharged from the cyclone 74 and falls and hits the screen 20, the ash containing the wet foreign matter passes through the screen 20 and accumulates on the screen 20. Further, when the ash containing foreign matter added with water discharged from the cyclone 74 and moving toward the side wall of the main body 83 hits the screen 82, the ash containing the foreign matter wet through the screen 82 is captured by the screen 82. It falls and accumulates on the screen 20.
The solid material separation unit 68 is disposed above the pit 84 formed on the floor 70, and the water removed by the solid-liquid separator 76 is discharged into the pit 84 and discharged using a side groove 85 communicating with the pit 84. It has become so. The carrier air separated by the cyclone 74 is collected by an exhaust gas pipe 87 provided in the ceiling portion 86 of the cyclone 74 and communicating between the inside and the outside of the cyclone 74, connected to the exhaust gas pipe 87, and attached to the mount 78 by an attachment member 88. It is discharged into the pit 84 from the opening 90 of the pit 84 through the fixed gas introduction pipe 89 and discharged through the side groove 85.

Next, the usage method of the processing apparatus 10 of the foreign material mixed ash which concerns on one embodiment of this invention is demonstrated.
First, for example, the connection switching unit 46 of the ash take-out valve 17 of the transfer pipe 14 is operated to cut off the first connection port 43 and the second connection port 44 to thereby cut off the first connection port 43 and the third connection port. 45 is brought into a communicating state, and the shutoff valve 49 of the high pressure water ejector 19 is closed. Further, by operating the connection switching portion 46 of the ash take-off valve 18 provided in the transfer pipe 15, the first connection port 43 and the second connection port 44 are brought into communication, and the ash take-out pipe 35 of the transfer pipe 15. And the downstream portion of the ash take-out pipe 35 are communicated with each other.

Then, an air intake port (not shown) of the air supply source 13 provided in the transfer pipe 15 is opened, and a constant flow of carrier air is supplied from the air supply source 13 into the transfer pipe 15, and the ash take-out pipe 35, A flow of carrier air flowing into the ash reservoir is formed via the path switching valve 41 and the ash main transfer pipe. Next, the swing damper 25 provided at the discharge port 24 of each hopper 11 provided above the transfer pipe 15 is operated to discharge the ash from each hopper 11 into the connection pipe 33 of the transfer pipe 15. Mix in the flow of carrier air. As a result, the ash collected by the dust collector is transferred to the ash reservoir via the transfer pipe 15.
On the other hand, cleaning of the hopper 11 provided above the transfer pipe 14 is started. At this time, the foreign matter generated by cleaning the hopper 11 falls in the hopper 11 and is stored in the hopper 11 together with the ash remaining in the hopper 11.

Subsequently, after confirming that the shutoff valve 50 of the high pressure water ejector 19 is closed, the main valve 64 of the high pressure water supply means 52 is opened and high pressure water is supplied from the high pressure water supply pipe 66 to the high pressure water introduction pipe 61. To do. At this time, the pressure of the high-pressure water is confirmed by a pressure gauge provided in the pressure detection pipe 62, and pressure adjustment is performed with a high-pressure water supply device (not shown) if necessary, and the flow rate adjustment valve 63 is operated to operate the high-pressure water. Adjust the flow rate. As a result, high-pressure water having a predetermined pressure can be ejected from the high-pressure water introduction pipe 61 and allowed to flow through the cylindrical body portion 56 and flow into the discharge pipe 53 of the connecting portion 59, thereby forming a decompression space in the ejector body 51. can do. Here, the pressure in the ejector main body 51 can be confirmed with a vacuum gauge 91 provided in the cylindrical portion 56. The high-pressure water that has flowed into the discharge pipe 53 enters the cyclone 74 provided in the solid matter separation unit 68 of the solid matter separation means 21 via the ash recovery pipe 67, and the discharge port below the cyclone 74. It flows out into the solid-liquid separator 76 from 75, is discharged into the pit 84 through the screens 20 and 82, and is discharged through the side groove 85.

Next, opening of the air intake port of the air supply source 13 provided in the transfer pipe 14 is started, and a constant flow of carrier air is supplied from the air supply source 13. At this time, since the shutoff valve 49 of the high-pressure water ejector 19 is closed, the transfer pipe 14 and the guide pipe 47 are filled with air. And the vacuum gauge 91 confirms that the decompression space is formed in the ejector main body 51, and makes the shut-off valve 49 open. As a result, the air in the transfer pipe 14 is sucked into the high-pressure water ejector 19 through the induction pipe 47, and a flow of carrier air is formed in the transfer pipe 14. Therefore, the swing damper 25 provided at the discharge port 24 of each hopper 11 is operated to discharge the ash containing foreign matter from the hopper 11 into the connecting pipe 33 of the transfer pipe 14. The ash containing the discharged foreign matter is mixed in the flow of the carrier air and enters the ash take-out pipe 35, and further reaches the third connection port 45 from the first connection port 43 of the ash take-out valve 17 and is transferred to the transfer pipe. 14 is taken out. The ash containing the foreign matter that has reached the third connection port 45 is drawn together with the carrier air into the ejector body 51 that is in a decompressed state, and the ash containing the foreign matter and the carrier air are mixed into the flow of high-pressure water. As a result, the solid gas-liquid mixture flows into the discharge pipe 53.

The solid-gas-liquid mixture that has flowed into the discharge pipe 53 is further discharged into the ash collection pipe 67, passes through the ash collection pipe 67, and is discharged into the cyclone 74 of the solid matter separation unit 68, along the inner wall of the cyclone 74. Start turning motion. As a result, the ash containing the foreign matter to which water in the solid-gas-liquid mixture is added and the carrier air are separated, and the separated carrier air is collected by the exhaust gas pipe 87 of the cyclone 74 and further pits through the gas introduction pipe 89. It is discharged into the pit 84 from the opening 90 of the 84.

On the other hand, the ash containing the foreign matter to which water is added turns while gradually contacting the inner wall of the cyclone 74 to gradually lower the turning position and is discharged from the discharge port 75 into the solid-liquid separator 76. In addition, since the ash containing a foreign substance is in a state in which water is added, no dust is generated from the ash when it is separated from the carrier air by the cyclone 74. When the ash containing the foreign matter to which water has been added is discharged into the solid-liquid separator 76 and blocked by the screens 20 and 82, the water passes through the screens 20 and 82, so that the water becomes wet on the screens 20 and 82. Ashes containing foreign substances accumulate. Thereby, water can be separated. The separated water is discharged into the pit 84 and discharged through the side groove 85.

When the collection of the ash including the foreign matter in the hopper 11 provided above the transfer pipe 14 is completed, the shutoff valve 49 is closed and the air intake port of the air supply source 13 is closed. Then, by operating the connection switching portion 46 of the ash removal valve 17 provided in the transfer pipe 14, the first connection port 43 and the second connection port 44 are brought into communication, and the ash extraction pipe 35 of the transfer pipe 14 is connected. And the downstream portion of the ash take-out pipe 35 are in communication with each other, and the connection switching portion 46 of the ash take-off valve 18 of the transfer pipe 15 is operated to shut off the first connection port 43 and the second connection port 44. The 1st connection port 43 and the 3rd connection port 45 are made into a communication state.

Next, the operation of the dust collector connected to the hopper provided above the transfer pipe 14 is resumed. Subsequently, the air intake port of the air supply source 13 provided in the transfer pipe 14 is opened, and a constant flow of carrier air is supplied from the air supply source 13 into the transfer pipe 14, and the ash take-out pipe 35, the flow path A flow of carrier air flowing into the ash reservoir via the switching valve 41 and the ash main transfer pipe 42 is formed, and the swing damper 25 provided in the discharge port 24 of each hopper 11 is operated to operate each hopper. The ash is discharged from the inside of the pipe 11 into the connecting pipe 33 of the transfer pipe 14 and mixed into the flow of the carrier air. Thereby, the operation | work which conveys the ash collected with the dust collector to the ash storage device via the transfer pipe 14 can be started. In addition, cleaning of the hopper 11 provided above the transfer pipe 15 is started. At this time, the method for collecting ash containing foreign matter stored in the hopper 11 is substantially the same as the method for collecting ash containing foreign matter generated during cleaning of the hopper 11 provided above the transfer pipe 14. The description is omitted.

As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The change in the range which does not change the summary of invention is possible, Each above-mentioned embodiment is possible. The case where the processing apparatus for foreign matter-mixed ash according to the present invention is configured by combining some or all of the forms and modified examples is also included in the scope of the right of the present invention.
For example, although two transfer pipes are connected to the high-pressure water ejector via an ash take-off valve, three or more transfer pipes may be connected to each via an ash take-off valve. Further, a high pressure water ejector may be connected to each transfer pipe via an ash removal valve.

It is a top view of the ash processing equipment with which the processing apparatus of the foreign material mixed ash which concerns on one embodiment of this invention was attached. (A), (B) is the side view and expanded partial sectional view which show the connection state of the hopper and transfer pipe of the ash processing equipment to which the processing apparatus of the foreign material mixed ash was attached, respectively. It is a side view of the processing apparatus of the same foreign material mixed ash. It is a top view of the high pressure water ejector of the processing apparatus of the foreign material mixed ash. It is a plane sectional view of the main-body part of the high pressure water ejector of the processing apparatus of the foreign material mixed ash. It is a partially cutaway sectional side view of the solid-material separation means of the foreign material mixed ash processing apparatus.

10: processing apparatus for foreign matter mixed ash, 11: hopper, 12: air dryer, 13: air supply source, 14, 15: transfer pipe, 16: ash treatment equipment, 17, 18: ash removal valve, 19: high pressure water Ejector, 20: Screen, 21: Solid separation means, 22: Discharge part, 23: Ash discharge pipe, 24: Discharge port, 25: Swing damper, 26: Lid, 27: Support pin, 28: Arm, 29: Support Shaft, 33: connecting pipe, 34: straight pipe, 35: ash take-out pipe, 36: seal plate member, 37: branch pipe, 38: inspection section, 39: air introduction pipe, 40: on-off valve, 41: flow path switching Valve: 42: Ash main transfer pipe, 43: First connection port, 44: Second connection port, 45: Third connection port, 46: Connection switching unit, 47, 48: Induction tube, 49, 50: Shut-off valve, 51: Ejector body 52: High pressure water supply means, 53: Discharge pipe, 54, 55: Connection port, 56: Cylindrical part, 57: Fixing member, 58: End plate member, 59: Connection part, 60: Nozzle, 61: High pressure water introduction Pipe: 62: Pressure detection pipe, 63: Flow rate adjustment valve, 64: Main valve, 65: Connection pipe, 66: High pressure water supply pipe, 67: Ash recovery pipe, 68: Solids separation part, 69: Piping mount, 70 : Floor, 71, 71a: Drain valve, 72: Pit, 73: Connection port, 74: Cyclone, 75: Discharge port, 76: Solid-liquid separator, 77: Swivel wheel, 78: Mount, 79: Mounting member 80: Guide member, 81: Connection part, 82: Screen, 83: Main body part, 84: Pit, 85: Side groove, 86: Ceiling part, 87: Exhaust gas pipe, 88: Attachment member, 89: Gas introduction pipe, 90: Opening, 91: Vacuum gauge

Claims (1)

A transfer tube for the ash to the air transport provided below the hopper for temporarily storing the ash collected by the dust collector is discharged from the hopper,
An air dryer provided upstream of the transfer pipe and attached to an air supply source having an air intake;
An ash take-off valve that is provided in the transfer pipe on the downstream side of the hopper and guides the ash containing foreign matter conveyed by the transfer pipe to the outside of the transfer pipe;
A high-pressure water ejector that draws ash containing foreign matter taken out of the transfer pipe by the ash take-off valve by flowing high-pressure water to create a decompression space;
A cyclone for separating the ash containing foreign matter to which water has been added by the high-pressure water ejector from the carrier air;
A gas introduction pipe for guiding the carrier air into a pit formed in the floor;
A foreign matter, comprising a screen disposed at a lower part of the cyclone, wherein the carrier air is separated and water is removed from the ash containing the foreign matter to which water has been added, and the ash containing the wetted foreign matter is collected. Mixed ash treatment equipment.

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