JP2012088000A - Slag discharge system and method for operating the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slag discharge system capable of easily and efficiently discharging slag, and a method for operating the same.SOLUTION: The slag discharge system includes a slag reservoir 26 for storing water granulated slag 19, a slurry tank 40 which stores the water granulated slag 19 discharged from the slag reservoir 26 and slurry liquid 29 and converts them into slag slurry 41, a slag slurry conveying part 28 having a slag slurry pump 43 for conveying the slag slurry 41, a slag storage tank 30 which separates slurry water 29 from the slag slurry 41 and stores the water granulated slag 19, a recovery pipe 62 for recovering discharge water 33 and supplying it to the slurry tank 40, a weight measuring device 201 for detecting the slag amount of the water granulated slag 19 dropped into or discharged from the slag reservoir 26, and a control means 202 for controlling driving of a slag conveyor 26b in such a manner that the slag conveyor 26b completes the discharge before the next water granulated slag supplying time, according to the amount of slag to be supplied.

Description

  The present invention relates to a slag discharge system that collects and discharges generated slag and a method for operating the slag discharge system.

  There is a technology for generating power by driving a gas turbine with coal gas obtained by gasifying coal. In order to gasify coal, a coal gasification furnace is used. When coal is gasified, slag remains as burnt in the coal gasifier. Such slag needs to be discharged from the coal gasifier. Since slag has fluidity at a sufficiently high temperature, it is generally discharged continuously from a slag hole provided in the lower part of the coal gasification furnace. Below the slag hole, a slag discharge cylinder filled with cooling water is provided. The slag is cooled and solidified by the cooling water, and then discharged from the slag discharge cylinder.

  As a system for discharging slag, there are apparatuses as described in Patent Document 1, Patent Document 2, and Patent Document 3. In any of the devices described in Patent Document 1 or Patent Document 2, the solidified slag is conveyed to a storage tank or the like by a belt conveyor. Further, the device described in Patent Document 3 describes a mechanism that is disposed in a housing and conveys slag to a container by rotating a shaft on which a plurality of flights are mounted.

JP 2002-122319 A JP 2003-88832 A JP-T-2003-518157

  Here, the discharge system described in Patent Document 1 to Patent Document 3 is configured to convey slag by a belt conveyor or a screw. For this reason, there is a problem that the degree of freedom of the apparatus configuration is low because the inclination angle of the conveyor is limited or the conveyor and the screw need to be arranged on a straight line. Moreover, although it can convey reliably by conveying slag with a scraper and a scraping nail, conveyance by one scraper and a scratching nail has a limit in conveyance amount, and conveyance becomes intermittent conveyance. .

  This invention is made | formed in view of the above, Comprising: It aims at providing the operating method of the slag discharge system which can discharge | emit slag more simply and efficiently, and a slag discharge system.

  1st invention which solves the subject mentioned above is a slag reservoir which stores the supplied granulated slag, a slurry tank which stores granulated slag discharged from the slag reservoir, and slurry water, and the inside of the slurry tank A slag slurry transport unit having a slag slurry pump that transports the slag slurry slurried in, a slag storage tank that separates and discharges slurry water from the slag slurry transported from the slag slurry transport unit, and stores the granulated slag, A recovery unit that recovers the discharged water discharged from the slag storage tank and supplies it to the slurry tank, a detection device that detects the slag amount of the granulated slag that falls to or discharged from the slag reservoir, Depending on the amount of granulated slag to be discharged, discharge by the slag conveyor will be completed before the next granulated slag is discharged In slag discharge system characterized in that a control means for controlling the driving of the over motor.

  In a second aspect based on the first aspect, the detection device is provided in the weight measuring device for measuring the weight of the cooling tank or in the cooling tank, and the weight on the slag conveyor for discharging the granulated slag to the outside. It is in the slag discharge system characterized by being at least one of the weight measuring devices to measure.

  A third invention is a slag reservoir for storing discharged granulated slag, a slurry tank for storing granulated slag discharged from the slag reservoir by a slag conveyor and slurry water, and slurrying in the slurry tank A slag slurry transport unit having a slag slurry pump for transporting the slag slurry, a slag storage tank for separating and discharging slurry water from the slag slurry transported from the slag slurry transport unit and storing the granulated slag, and the slag storage Using a slag discharge system comprising a recovery unit that recovers the discharged water discharged from the tank and supplies it to the slurry tank, and a detection device that detects the amount of slag of the granulated slag that is dropped or discharged into the slag reservoir. Depending on the amount of granulated slag that is dropped or discharged, by the slag conveyor until the next granulated slag is discharged Controls the driving of the motor so as to complete the exit, there is a drive of the slurry pump to the operating method of the slag discharge system, characterized by a constant.

  The slag discharge system according to the present invention has an effect that the slag can be discharged while improving the operation controllability.

Drawing 1 is a mimetic diagram showing a schematic structure of one embodiment of a slag discharge system. FIG. 2 is a chart showing in time series the relationship between the slag supply amount from the slag lock hopper, the slag discharge amount of the slag conveyor, the load of the slag slurry pump, and the slag slurry concentration.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited by the following modes for carrying out the invention (hereinafter referred to as embodiments). In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range. Furthermore, the constituent elements disclosed in the following embodiments can be appropriately combined.

  Embodiments of a slag discharge system according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

Drawing 1 is a mimetic diagram showing a schematic structure of one embodiment of a slag discharge system. First, the gasification furnace 12, the slag hopper 14, the on-off valve 16, and the transport vehicle 18 arranged around the slag discharge system 20 shown in FIG. 1 will be described. The gasification furnace 12 gasifies a combustion substance such as coal and supplies the generated gas to the combustion furnace or the like.
Further, the gasification furnace 12 drops the molten slag 13 generated when gasifying the combustion substance at the bottom thereof from the slag hole 15 to the slag cooling water 17 to form a granulated slag 19 and then disposed at the lower part. It is stored in the slag hopper 14. The slag hopper 14 is a storage mechanism that is disposed below the gasification furnace 12, collects the granulated slag 19 generated in the gasification furnace 12, and stores the granulated slag 19. The slag hopper 14 has a funnel shape with a diameter that decreases toward the lower side in the vertical direction, and the water slag 19 generated at the bottom of the gasification furnace 12 is moved downward in the vertical direction. Collect crushed slag 19 in one place. The on-off valve 16 is disposed at the lower end in the vertical direction of the passage path of the granulated slag 19 of the slag hopper 14. The on-off valve 16 switches between starting and stopping the discharge of the granulated slag 19 stored in the slag hopper 14 to the slag discharge system 20 by switching between opening and closing. The granulated slag 19 discharged from the on-off valve 16 is a fluid containing slag cooling water 17.
Here, the molten slag 13 dropped into the slag cooling water 17 is rapidly cooled to become particles of a glassy granulated slag 19, and the size thereof is about several millimeters to several tens of millimeters.

  The conveyance vehicle 18 is a vehicle that carries the granulated slag 19 discharged from the slag discharge system 20 to a predetermined position. A truck can be used as the transport vehicle 18. In addition, although it was set as the structure discharged | emitted to the conveyance vehicle 18 in this embodiment, this invention is not limited to this, It can discharge | emit to various objects.

  Next, the slag discharge system 20 will be described. The slag discharge system 20 drops the molten slag 13 generated in the gasification furnace 12 into the slag cooling water 17 to form a granulated slag 19, and transports the granulated slag 19 discharged from the on-off valve 16 of the slag hopper 14. 18 is a system for discharging. The slag discharge system 20 includes a slag lock hopper 22, a slag reservoir 26, a slag transfer unit (slag slurry transfer unit) 28, a slag storage tank 30, and a discharge port 32.

  The slag lock hopper 22 is a storage unit that temporarily stores the granulated slag 19, and is disposed directly below the on-off valve 16. The slag lock hopper 22 temporarily stores the granulated slag 19 discharged from the on-off valve 16, and then periodically supplies it to the slag reservoir 26, which is a slag cooling unit, via the on-off valve 22a.

  The slag reservoir 26 has a slag reservoir tank 26a and a slag conveyor 26b driven by a motor M, and supplies the granulated slag 19 discharged from the slag lock hopper 22 to the slag transport unit 28 by a predetermined amount. The slag conveyor 26b is a transport mechanism that is dropped into the slag reservoir tank 26a and transports the granulated slag 19 together with water. A part of the slag conveyor 26 b is disposed in the slag reservoir tank 26 a, holds the granulated slag 19 in the slag reservoir tank 26 a, moves it, and discharges it to the slag transport unit 28.

The slag reservoir tank 26a of the slag reservoir 26 is provided with a weight measuring device 201 for measuring the weight of the granulated slag 19 supplied from the slag lock hopper 22, and the supply amount of the granulated slag 19 is measured each time. .
The weight signal of the weight measuring device 201 is sent to the control means 202 and processed. As a result of the arithmetic processing, the slag weight value of the granulated slag 19 and the time until the next slag lock hopper 22 is dropped are processed by the control means 202 until the next supply (fall) from the slag lock hopper 22. In addition, the drive (capacity (number of rotations)) of the motor M of the slag conveyor 26b is controlled so that the discharge to the slurry tank 40 is completed.
By performing this control, the granulated slag 19 is continuously supplied into the slurry tank 40, and a constant amount of slag slurry 41 is always generated. As a result, the slag slurry pump 43 can always be operated at a constant load and only the slurry water 29 is not transported, so that the controllability of the entire system can be improved.

  The slag transport unit (slag slurry transport unit) 28 is a transport mechanism that transports the granulated slag 19 discharged from the slag reservoir 26 to the slag storage tank 30 as a slurry, and includes a slurry tank 40, a transport pipe 42, and a slag It has a slurry pump 43, a liquid level adjusting means 44, a recovery pipe 62, and water receiving parts 63a and 63b. The slurry tank 40 is a tank that stores the granulated slag 19 supplied from the slag reservoir 26 and the slurry water 29. The slurry tank 40 stores the granulated slag 19 dispersed in the slurry water 29. The transport pipe 42 is a pipe that connects the slurry tank 40 and the slag storage tank 30. The slag slurry pump 43 is interposed in the transport pipe 42, and forms a flow in which the slag slurry 41 in which the granulated slag 19 in the slurry tank 40 is dispersed in the transport pipe 42 flows to the slag storage tank 30. As described above, the slag transport unit 28 converts the granulated slag 19 dispersed in the slurry water 29 in the slurry tank 40 into the slag slurry 41 and transports it to the slag storage tank 30 by the transport pipe 42 and the slag slurry pump 43.

  Next, the liquid level adjusting means 44 controls the supply of the slurry water 29 to the slurry tank 40 and adjusts the liquid level of the slurry tank 40. The liquid level adjusting means 44 includes a water storage tank 50, a supply pipe 51, a water supply pump 52, a circulation pipe 53, an overflow pipe 54, an on-off valve 56, a level meter 58, and a liquid level control unit 60. Have. The water storage tank 50 is a tank that stores water. The supply pipe 51 is a pipe that connects the water storage tank 50 and the slurry tank 40. The water supply pump 52 is disposed in the supply pipe 51, and forms a flow in which the slurry water 29 stored in the water storage tank 50 flows toward the slurry tank 40 in the supply pipe 51. That is, the water supply pump 52 flows the water stored in the water storage tank 50 toward the slurry tank 40. The circulation pipe 53 is a pipe that connects a portion of the supply pipe 51 closer to the slurry tank 40 than the water supply pump 52 and the water storage tank 50. Next, the overflow pipe 54 is a pipe that connects the wall surface of the predetermined liquid level of the slurry tank 40 and the water storage tank 50. The overflow pipe 54 is arranged in such a direction that the slurry water 29 in the slurry tank 40 flows when the liquid level of the slurry tank 40 exceeds the connected portion. The overflow pipe 54 discharges the slurry water 29 discharged from the slurry tank 40 to the water storage tank 50.

  Next, the on-off valve 56 is disposed closer to the slurry tank 40 than the portion of the supply pipe 51 where the circulation pipe 53 is provided, and switches between opening and closing the pipe line of the supply pipe 51. The liquid level adjusting means 44 flows through the supply pipe 51 when the on-off valve 56 is opened, the slurry water 29 flowing through the supply pipe 51 is supplied to the slurry tank 40, and the on-off valve 56 is closed. Water is not supplied to the slurry tank 40. When the on-off valve 56 is closed, the water flowing through the supply pipe 51 by the water supply pump 52 is returned to the water storage tank 50 by the circulation pipe 53. Thereby, it can be set as the state which always driven the water supply pump 52, and control with high responsiveness is attained.

  The level meter 58 is a sensor that detects the liquid level (in this embodiment, the water level) of the slurry water 29 in the slurry tank 40. As the level meter 58, various sensors that can detect the position of the liquid surface (water surface) of water (slurry in which water and slag are mixed) stored in the slurry tank 40 can be used.

  The liquid level controller 60 controls the opening / closing operation of the opening / closing valve 56 based on the liquid level detected by the level meter 58. That is, the liquid level control unit 60 switches whether to supply the water stored in the water storage tank 50 to the slurry tank 40 based on the liquid level detected by the level meter 58. The control operation by the liquid level control unit 60 will be described later. Further, the liquid level control unit 60 may control the operation of each unit as necessary in addition to the on-off valve 56. In addition to the liquid level control unit 60, a control unit for controlling each unit may be separately provided.

  The recovery pipe 62, which is a liquid recovery section, is a conduit for recovering the discharged water 33 separated and discharged from the slag storage tank 30, and connects the water receiving section 63a and the slurry tank 40 to connect the water receiving section 63b and the slurry. The tank 40 is connected. The water receiving portions 63 a and 63 b are disposed below the water discharge portion of the slag storage tank 30, and collect the discharged water 33 discharged and separated from the slag storage tank 30. The water receivers 63a and 63b cause the recovered discharged water 33 to flow through the recovery pipe 62. The water receiving portion 63 a is disposed below the inclined portion of the slag storage tank 30, and the water receiving portion 63 b is disposed below the vertical portion of the slag storage tank 30.

  The slag storage tank 30 is a tank that stores the slag slurry 41 transported by the slag transport unit 28. The slag storage tank 30 has a main body 101 and a filter 106. The main body 101 is a hollow tower, and in this embodiment, has a cylindrical shape with a square cross section (horizontal surface), and an end portion with a gradually decreasing diameter is provided on the lower side in the vertical direction. The filter 106 is a member that does not allow the granulated slag to pass but allows the slurry water to pass therethrough, and a plurality of the filters 106 are disposed on the side surface (wall surface) of the main body 101. The plurality of filters 106 are arranged at respective positions in the vertical direction on one surface of the main body 101. As the filter 106, a member in which a plurality of holes having a diameter through which slag cannot pass and water can pass can be used. The slag storage tank 30 is configured as described above. When the slag slurry 41 composed of the granulated slag and the slurry water 29 is supplied from the slag transport unit 28, only the water is discharged from the filter 106 and the discharged water 33 is discharged. At the same time, the granulated slag 19 is stored therein.

  The discharge port 32 is disposed at the lower end of the slag storage tank 30, and controls the execution and stoppage of the granulated slag 19 stored in the slag storage tank 30. The granulated slag 19 discharged from the discharge port 32 is discharged to the transport vehicle 18 that is waiting directly below.

  The slag discharge system 20 is configured as described above, and the granulated slag 19 generated at the bottom of the gasification furnace 12 is recovered by the slag hopper 14, and the granulated slag 19 discharged from the on-off valve 16 is recovered by the slag lock hopper 22. The slag cooling water 17 is temporarily stored together. The slag discharge system 20 drops the granulated slag 19 stored in the slag lock hopper 22 into the slag reservoir tank 26a of the slag reservoir 26 by a predetermined amount every predetermined time, and the slurry tank 40 is moved by the slag conveyor 26b installed in the slag reservoir tank 26a. Transport the fallen objects to.

  The slag discharge system 20 conveys the granulated slag 19 stored in the slurry tank 40 to the slag storage tank 30 as the slag slurry 41 by the slurry water 29 by the transport pipe 42 and the slag slurry pump 43. Moreover, the slurry water 29 conveyed to the slag storage tank 30 together with the granulated slag 19 is discharged from the filter 106 and falls to the water receiving portions 63a and 63b to become discharged water 33. The discharged water 33 that has dropped to the water receiving portions 63 a and 63 b is conveyed to the slurry tank 40 via the recovery pipe 62 and reused as the slurry water 29 again. Further, the liquid level adjusting means 44 maintains the liquid level of the slurry tank 40 within a certain range.

  The slag discharge system 20 continues the slag conveyance described above. In the slag storage tank 30, the granulated slag 19 from which the discharged water 33 is separated is discharged from the discharge port 32 to the transport vehicle 18, and the transport vehicle 18 loads the granulated slag 19 and transports the slag to a predetermined point. To do. The transport vehicle 18 sequentially moves directly below the discharge port 32, and moves to a predetermined point after loading the slag. Thus, the conveyance vehicle 18 repeats conveyance of slag.

Next, the operation of the slag discharge system 20, particularly the slag reservoir 26 and the slag slurry transport unit 28 will be described with reference to FIG.
FIG. 2 is a chart showing the relationship between the slag supply amount from the slag lock hopper 22, the slag discharge amount of the slag conveyor 26b, the load of the slag slurry pump 43, and the slag slurry concentration in time series. In FIG. 2, the situation of five drops from slag discharge I to slag discharge IV is shown.

As shown in FIG. 2, for example, in the first slag discharge I, when the predetermined discharge of the granulated slag 19 from the slag lock hopper 22 is completed, the discharge of the slag of the slag conveyor 26b to the slurry tank 40 is completed. . Incidentally, T ₁ is the open state of the opening and closing valve 22a of the regularly slag lock hopper 22 at regular intervals, a discharge time of the water granulated slag.
Within this time T _1, the granulated slag 19 is dropped from the slag lock hopper 22 to the slag reservoir 26. T ₂ is a state in which the on-off valve 22a is closed.
In this embodiment, the control means 202 processes the slag weight value and the time until the next slag lock hopper 22 is dropped, and the slurry tank 40 is discharged before the next slag lock hopper 22 is dropped. The capacity (number of rotations) of the slag conveyor 26b is controlled so as to be completed.

  As a result, the granulated slag 19 is always continuously discharged within a predetermined time, the slag slurry 41 is always generated, and the slag slurry pump 43 can be continuously driven at a normal load (100%). It is possible to improve the controllability.

This operation procedure will be described.
First, the weight of the slag reservoir 26 is measured. The control means 202 measures the slag weight value when the on-off valve 22a is opened and a predetermined amount of the granulated slag 19 is dropped.

The control unit 202 processes the measured slag weight value and the time until the next slag lock hopper 22 falls from the slag lock hopper 22, and the slurry tank before the next slag lock hopper 22 falls. The capacity (number of rotations) of the motor M of the slag conveyor 26b is controlled so that the discharge to 40 is completed.
Thereby, the slag conveyor 26b is controlled so that the granulated slag 19 is always discharged. As a result, the granulated slag 19 is always dropped in the slurry tank 40. As a result, the slag slurry pump 43 is always operated at a constant load, and the slag storage tank 30 supplies the slag slurry 41.

Specifically, as shown in FIG. 2, when the operation of “slag discharge I” is completed, “slag discharge II” is set.
In the operation of “slag discharge II”, the falling amount of the granulated slag 19 is measured by the weight measuring device 201.
In this measurement, when the amount of the granulated slag 19 is small, the amount of discharge by the slag conveyor 26b may be small until the next “slag discharge III” operation, so the number of rotations of the motor M is controlled to be low.
Next, in the “slag discharge III” operation, the falling amount of the granulated slag 19 is measured by the weight measuring device 201.
In this measurement, when it is determined that the amount of the granulated slag 19 is falling, it is necessary to increase the discharge amount by the slag conveyor 26b until the next slag discharge IV, and the rotation speed of the motor M is increased to a high rotation. Control.

  As a result, the concentration of the granulated slag 19 discharged into the slurry tank 40 changes and the slurry concentration changes, but the supply of only water is lost, and the load of the slag slurry pump 43 can always be constant, Operation controllability is improved.

The slag discharge system 20 is configured as described above, and the granulated slag 19 is mixed with the slurry water 29 and supplied to the slag storage tank 30 in a slurry state, whereby the granulated slag 19 is supplied to the slag storage tank 30. Can be transported.
Moreover, since the slag discharge system 20 is made into a slurry and transports the granulated slag 19, it is possible to increase the degree of freedom of the route of the piping. That is, the slag can be transported even if the transport path is not linear, and the transport path has an arbitrary inclination angle. Thereby, an apparatus can be arrange | positioned compactly.

  Further, by providing a filter 106 on the side surface of the slag storage tank 30 and discharging water (liquid), the water used for transporting the slag can be efficiently and easily discharged from the slag storage tank 30. be able to. In addition, by collecting the water discharged from the filter 106 of the slag storage tank 30 and returning it to the slurry tank 40, the water used for transportation can be used efficiently. Further, even when a part of the granulated slag 19 is discharged from the filter 106, it can be supplied again to the slag storage tank 30 as the slag slurry 41, and the granulated slag 19 can be transported more efficiently. it can.

  In the above embodiment, the weight of the granulated slag 19 falling from the slag lock hopper 22 is measured by the weight measuring device 201. However, the present invention is not limited to this. You may make it measure the fall weight using the weight measuring apparatus which measures the weight on the slag conveyor 26b which discharges the slag 19 outside.

  Furthermore, the slag discharge system 20 maintains the liquid level (water level) of the slurry tank 40 within a certain range by the liquid level adjusting means 44. Thereby, the water held in the slurry tank 40 can be in a certain range, and the slag concentration of the slurry sent from the slurry tank 40 to the slag storage tank 30 can be in the certain concentration range. That is, even if the amount of water discharged from the slag storage tank 30 and recovered into the slurry tank 40 changes, the liquid level in the slurry tank 40 can be kept within a certain range. For example, even if the storage of slag in the slag storage tank 30 has changed and the liquid level has changed, the amount of water discharged from the slag storage tank 30 has changed, and the amount of recovered water has changed. Accordingly, the liquid level adjusting means 44 adjusts the supply of water to the slurry tank 40, so that the liquid level of the slurry tank 40 can be maintained within a certain range.

  Thus, the slag discharge system 20 can suppress the concentration of the slag in the slurry within a certain concentration range, thereby increasing the concentration of the slag and preventing the slurry from being conveyed. For example, the concentration of slag in the slurry can be maintained at 40% or less, and the slag can be appropriately conveyed from the slurry tank 40 to the slag storage tank 30. Moreover, the slag discharge system 20 can convey slag efficiently because the density | concentration of the slag in a slurry can be in a fixed density | concentration range. That is, it can suppress that the quantity of slag contained in a slurry decreases and conveyance efficiency falls. The range of the slag concentration in the slurry is not particularly limited because it varies depending on the configuration of the apparatus, the performance of the pump, and the like. For example, it is preferably 5% to 40%.

  The slag discharge system 20 may control the supply of slag to the slurry tank 40 by controlling the driving of the slag conveyor 26 b of the slag reservoir 26. The supply of slag to the slurry tank 40 may be controlled as being constant.

  In addition, the liquid level adjusting means 44 can provide the overflow pipe 54 so that the liquid level of the slurry tank 40 can be more surely kept below a certain liquid level. Moreover, the liquid level adjusting means 44 can be in a state where the water supply pump 52 is always operated by providing the circulation pipe 53. Thereby, responsiveness can be made high. The water circulated by the liquid level adjusting means 44 and the water stored in the water storage tank 50 may be used for other purposes.

  Further, the liquid level adjusting means 44 of the present embodiment is controlled so as to keep the liquid level within a certain range, but the present invention is not limited to this, and even if the liquid level is controlled to be maintained above a certain level. Good. That is, when it is detected that the liquid level in the slurry tank 40 is lower than a certain liquid level (lower limit value), water may be supplied to the slurry tank 40. Further, water may be constantly supplied, and water exceeding the upper limit value may be recovered by the overflow pipe 54. That is, the liquid level may be maintained at the liquid level at which the liquid is recovered by the overflow pipe 54. In addition, the structure which always supplies water in this way supplies water excessively, and energy efficiency falls.

  In the present embodiment, water is used as the liquid for making the slag into a slurry form, but any liquid other than water may be used as long as it is a liquid.

  As described above, the slag discharge system according to the present invention is useful for discharging slag, and is particularly suitable for cooling slag generated in a combustion furnace and discharging it to a predetermined position.

DESCRIPTION OF SYMBOLS 12 Gasification furnace 13 Molten slag 14 Slag hopper 16 On-off valve 18 Transport vehicle 19 Granulated slag 20 Slag discharge system 22 Slag lock hopper 26 Slag reservoir 26a Slag reservoir tank 26b Slag conveyor 28 Slag conveyor 30 Slag storage tank 32 Discharge port 40 Slurry Tank 41 Slag slurry 42 Transport pipe 43 Slag slurry pump 44 Liquid level adjusting means 50 Water storage tank 51 Supply pipe 52 Water supply pump 54 Overflow pipe 56 Open / close valve 58 Level meter 60 Liquid level control section 62 Recovery pipe 63a, 63b Water receiving section 101 Main body 106 Filter 201 Weight measuring device 202 Control means

Claims (3)

A slag reservoir for storing granulated slag supplied from a slag hopper;
A slurry tank for storing granulated slag discharged from the slag reservoir and slurry water;
A slag slurry transport unit having a slag slurry pump for transporting the slag slurry slurried in the slurry tank;
A slag storage tank that separates and discharges slurry water from the slag slurry conveyed from the slag slurry conveyance unit and stores the granulated slag;
A recovery unit that recovers the discharged water discharged from the slag storage tank and supplies the recovered water to the slurry tank;
A detection device for detecting a slag amount of the granulated slag supplied to the slag reservoir;
A slag discharge system comprising: control means for controlling the drive of the slag conveyor so that the discharge by the slag conveyor is completed before the next supply of the granulated slag according to the amount of the granulated slag to be supplied . In claim 1,
The detection device is at least one of a weight measuring device that measures the weight of the cooling tank, or a weight measuring device that is provided in the cooling tank and measures the weight on the slag conveyor that discharges the granulated slag to the outside. Slag discharge system characterized by. A slag reservoir for storing granulated slag supplied from a slag hopper;
A slurry tank for storing granulated slag and slurry water discharged from the slag reservoir by a slag conveyor;
A slag slurry transport unit having a slag slurry pump for transporting the slag slurry slurried in the slurry tank;
A slag storage tank that separates and discharges slurry water from the slag slurry conveyed from the slag slurry conveyance unit and stores the granulated slag;
A recovery unit that recovers the discharged water discharged from the slag storage tank and supplies the recovered water to the slurry tank;
Using a slag discharge system comprising a detection device that detects the amount of slag of granulated slag supplied to the slag reservoir,
According to the amount of the granulated slag to be supplied, the drive of the slag conveyor is controlled so that the discharge by the slag conveyor is completed before the next granulated slag is supplied, and the drive of the slurry pump is made constant. To operate the slag discharge system.

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