JP2019074258A - Sediment treatment method - Google Patents

Abstract

To provide a sediment treatment method capable of improving a slag recovery rate.SOLUTION: A sediment treatment method is used for treating sediment T accumulated in a melting furnace 1 in which a melting section 2 for melting a melting target and a slag hole 3 for discharging the molten melting target from the melting section 2 are formed. In the melting furnace 1, an accumulation section 21 in which the melting target that has not been molten to a level enabling discharge from the slag hole 3 are accumulated and a high-temperature section 22 whose temperature becomes higher than that of the accumulation section 21 during operation are formed in the melting section 2. The sediment treatment method includes the processes of: crushing the sediment T accumulated in the accumulation section 21; and moving the crushed sediment T from the accumulation section 21 to the high-temperature section 22.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a deposit processing method for treating deposits deposited in a melting furnace.

  BACKGROUND ART Conventionally, a melting furnace is known which burns a combustible gas generated in a gasification furnace and melts a slag formation contained in the combustible gas to obtain slag. Patent Document 1 discloses a melting system having a furnace main body in which a combustion chamber for melting slag formations, an outlet for discharging slag, and a gas discharge chamber for discharging exhaust gas after combustion in the combustion chamber are formed. A furnace is disclosed.

  In a conventional melting furnace such as Patent Document 1, a part of the slag formation may be deposited as a deposit in the melting furnace without completely melting during operation. Such deposits are taken out of the furnace when the operation of the melting furnace is stopped. The melting furnace is to be reactivated after the deposit has been removed.

JP, 2016-169881, A

By the way, the slag discharged | emitted from a tap hole may be utilized as products, such as a civil engineering materials, for example.
However, the deposits deposited in the furnace without being discharged as slag during operation, including semi-melts, are not homogeneous, so they can not be used as products even when taken out of the furnace. Therefore, such deposits are taken out of the furnace and discarded after the melting furnace is shut down. As described above, conventionally, a part of the slag formations contained in the combustible gas generated in the gasification furnace is discarded, and there is a problem that the slag can not be recovered sufficiently.

  Then, this invention makes it a subject to provide the deposit processing method which can improve the recovery rate of slag in view of this situation.

The deposit processing method according to the present invention is a melting furnace in which a melting portion for melting a melting object and a spout port for discharging the melted object to be melted from the melting portion are formed, and the inside of the melting portion Processing deposits deposited in the deposition section where the melting target not deposited to the extent of being discharged from the outlet is deposited and in the melting furnace where high temperature sections that become hotter than the deposition section are formed during operation Deposit processing method,
Grinding the deposit deposited on the deposit portion;
Moving the crushed deposit from the deposition section to the high temperature section.

  According to such a configuration, the deposits deposited in the deposition section are crushed and moved to the high temperature section, so that when the melting furnace is operated, the deposits that are not melted can be exposed to the high temperature, The material can be melted to the extent that it is discharged from the outlet. Therefore, the deposit can be melted and recovered, and the recovery rate of slag can be improved.

In one aspect of the present invention, the moving step is a step of moving the crushed deposit to a high temperature part formed at a position away from the tapping hole,
The sediment treatment method is
The method may further include the step of forming a recess extending from the high temperature portion to the outlet.

  According to this configuration, when the deposit moved to the high temperature part is melted during the operation of the melting furnace, the melted deposit flows through the recess extending from the high temperature part to the outlet port and is led to the outlet port. Therefore, the molten deposit can be discharged smoothly from the outlet.

As another aspect of the present invention, in the deposit processing method, the outlet is formed in the high temperature portion, and one end on the outlet side is lower than the other end on the side opposite to the outlet. Placing the crushed deposit on an inclined surface inclined downward,
The process may further include the step of placing the easily meltable melt of the crushed deposits on the other end side of the hard-melt deposits that are more difficult to melt than the easy-melt deposits.

  According to this configuration, on the inclined surface of the high temperature part, the easily molten deposit that is easily melted is placed on the high side, and the hardly molten deposit that is hard to melt is placed on the low side. Therefore, since the deposit placed at the high position of the inclined surface is more likely to melt than the deposit placed at the lower position, the deposit can be gradually melted from the top of the inclined surface, and the deposit The deposit placed on the inclined surface can be made less likely to collapse during the melting of

  As another aspect of the present invention, the deposit processing method may include the step of inserting a wedge member between the end on the tapping hole side of the low melting deposit and the inclined surface.

  According to this configuration, since the deposit located on the lowest side of the inclined surface can be prevented from rolling on the inclined surface by the wedge member, the deposit can be made less likely to collapse.

As another aspect of the present invention, the melting furnace is provided with a high temperature part and a tapping hole side by side,
The sediment treatment method is
The melting furnace may further include a step of circulating hot air for melting deposits transferred to the high temperature part from the high temperature part toward the outlet.

  According to this configuration, since the hot air is circulated from the high temperature part toward the outlet, the deposit in the high temperature part can be exposed to the high temperature hot air, and can be efficiently melted.

  As mentioned above, according to this invention, the deposit processing method which can improve the recovery rate of slag can be provided.

It is a figure which shows the outline of the melting furnace which concerns on this embodiment, Comprising: It is a figure which shows the state which the deposit accumulated in the melting furnace. It is a figure which shows the outline of the melting furnace which concerns on this embodiment, Comprising: It is a figure which shows the state after moving the deposit deposited in the melting furnace to the high temperature part. It is a fragmentary plan view inside a melting furnace, and is a fragmentary plan view for explaining the crevice formed between the high temperature part and the tapping hole. It is a right side sectional view inside a melting furnace, and is a right side sectional view for explaining the crevice formed between the high temperature part and the tapping hole. It is a figure for demonstrating the state on which the easy melting deposit and the low melting deposit were mounted.

  Hereinafter, a deposit processing method according to an embodiment of the present invention will be described with reference to the drawings.

  The deposit processing method is, for example, used in the melting furnace 1 at the time of shutdown of the melting furnace 1 as shown in FIGS. 1 and 2. The melting furnace 1 burns the combustible gas generated in the gasification furnace and melts the ash contained in the combustible gas. First, the configuration of melting furnace 1 will be described.

  Melting furnace 1 receives from the gasifier a mixture of combustible gas produced in the gasifier, non-combustibles not burned in the gasifier, and ash. The melting furnace 1 burns and melts the mixture to form a slag. The melting furnace 1 also discharges the exhaust gas generated by the combustion of the mixture. Hereinafter, what melts and forms slag among the said mixtures may be called a melting object.

  In the melting furnace 1, a melting portion 2 for melting the melting object, an outlet 3 for discharging the melted object (i.e., slag) from the melting portion 2, and an outlet 3 for discharging A discharge unit 4 is formed to flow out the object to be melted into a cooling facility such as a water tank. An object to be melted melted in the melting portion 2 is discharged from the outlet 3 as slag. An object to be melted which is not melted to such an extent that it is discharged from the spout 3 is deposited on the bottom wall in the melting portion 2 or deposited (adhered) on the inner wall.

  One end of the melting portion 2 is in communication with the gasification furnace, and the other end is in communication with a gas cooling portion (see FIG. 1) for cooling the exhaust gas discharged from the inside of the furnace. In the melting part 2, a burner (not shown) for burning the material to be melted is installed. In the present embodiment, the object to be melted discharged from the gasification furnace is melted by the combustion and burner of the flammable gas, the melted portion is discharged as slag from the outlet 3 and the gas portion is directed to the gas cooling section as exhaust gas. Discharged. Therefore, as shown by the arrow in FIG. 1, in the melting unit 2, the hot air W (gas) flows from the gasification furnace toward the gas cooling unit. Hereinafter, based on the flow direction of the hot air W, the gasification furnace side is referred to as the upstream side, and the gas cooling unit side is referred to as the downstream side.

  The melting portion 2 is formed in a tubular shape. The fusion zone 2 of the present embodiment has a shape in which a cylinder is curved in a U-shape. Specifically, melting portion 2 includes a pair of body portions 201 extending in the height direction corresponding to the vertical direction, and a bottom portion 202 connecting the pair of body portions 201 and extending in the horizontal direction corresponding to the horizontal direction. Prepare. At the upper end portion of one of the body portions 201a of the pair of body portions 201, an inlet for allowing the combustible gas to flow from the gasification furnace is formed. An exhaust port for exhausting the exhaust gas to the gas cooling unit is formed at the upper end portion of the other body portion 201b.

  The bottom 202 has a shape that is curved downward in the height direction. The bottom portion 202 is formed to be lowest at the central portion. The bottom portion 202 is formed with an outlet 3. The bottom portion 202 is downwardly inclined toward the outlet 3 so that one end on the outlet 3 side is lower than the other end on the side opposite to the outlet 3 (one or the other trunk 201 side). The inclined surface 23 is configured. That is, in the present embodiment, the outlet 3 is formed at the lowermost end of the bottom portion 202 (the portion located at the lowermost end of the U-shaped molten portion 2). Therefore, the melting target melted at the melting portion 2 is collected at the outlet 3. In the present embodiment, the outlet 3 is formed in the central portion of the bottom portion 202. Since the fusion zone 2 of the present embodiment is formed in a cylindrical shape, the inner surface of the bottom 202 is curved downward in the vertical direction perpendicular to the height direction and the horizontal direction (see FIG. 4), The surface has a laterally extending shape.

  The bottom portion 202 is wide enough to allow an operator to work inside. The bottom portion 202 is formed to have an inner diameter of, for example, 1200 mm to 2500 mm.

  In the melting portion 2, there are formed a deposition portion 21 on which a melting target which is not melted so as to be discharged from the spout 3 is deposited, and a high temperature portion 22 having a higher temperature than the deposition portion 21 during operation. . That is, the deposition T is a portion where the deposit T is deposited in the melting portion 2 and is a portion which becomes higher temperature than the deposition portion 21 during operation, and the deposit of the deposition 21 as described later The portion on which T is moved and placed is the high temperature portion 22. Therefore, depending on the operation condition of melting furnace 1 and the deposition state of deposit T at the time of operation stop of melting furnace 1, the position where deposition part 21 and high temperature part 22 are formed may fluctuate at every operation stop time . In the present embodiment, the melting portion 2 includes a primary-side melting portion 2 a located upstream of the spout 3, and a secondary-side melting portion 2 b located downstream of the spout 3. During operation, the temperature in the primary side melting portion 2a becomes higher than the temperature in the secondary side melting portion 2b. For example, the temperature in the primary side melting portion 2a in operation is around 1300 degrees, and the temperature in the secondary side melting portion 2b is around 1000 degrees. As described later, in the present embodiment, the deposit T deposited on the secondary side melting portion 2b is moved to the primary side melting portion 2a. Therefore, the high temperature part 22 is formed in the primary side fusion part 2a. Therefore, in the present embodiment, the high temperature portion 22 and the outlet 3 are provided side by side in the lateral direction. That is, the high temperature portion 22 is a portion on the upstream side of the outlet 3, and the hot air W flows from the high temperature portion 22 toward the outlet 3.

  The object to be melted is melted by being in contact with the flame from the burner or melted by the hot air W in the melting portion 2. Since the temperature in the secondary side melting portion 2b during operation is lower than the temperature in the primary side melting portion 2a, the object to be melted is difficult to melt in the secondary side melting portion 2b compared to the primary side melting portion 2a . As a result, even if it passes through the primary side melting portion 2a, the object to be melted which is not melted to such an extent that it is discharged from the outlet 3 is relatively difficult to melt in the first place Then, it may deposit on the secondary side melting portion 2b without melting. Therefore, the deposition unit 21 is often formed in the secondary-side melting unit 2 b. However, the melting target may deposit not only on the secondary side melting portion 2 b but also on the primary side melting portion 2 a. Moreover, the melting target may be deposited (adhered) on the walls of the primary side melting portion 2a and the secondary side melting portion 2b.

  In the present embodiment, as described later, the crushed deposit T is moved to the high temperature portion 22 formed at a position away from the outlet 3. Therefore, an area where the deposit T is not placed is formed between the high temperature portion 22 to which the deposit T has been moved and the spout 3. Hereinafter, the region formed between the high temperature portion 22 and the outlet 3 is referred to as an intermediate portion 24.

  The deposit T deposited in the melting portion 2 is sorted into the easily meltable deposit T1 that is easy to melt or the hardly-meltable deposit T2 that is more difficult to melt than the easy-melt deposit T1. The deposit T is sorted into easy-melt deposits T1 or hard-melt deposits T2 on a property basis based on its properties, and easy-melt deposits T1 or hard-melt deposit on a physical basis based on size and mass. There is a case where it is sorted to the thing T2. As the property criteria, for example, the deposit T having a base T of the deposit T lower than a predetermined base T is the easily melted deposit T1, and the base T of the deposit T is a deposit T higher than the predetermined base T. It may be a refractory deposit T2. For example, if the basicity is less than 0.8, it may be a readily meltable deposit T1, and if the basicity is 0.8 or more, it may be a poorly molten deposit T2. As a physical standard, for example, a relatively small deposit T may be the easy-melt deposit T1, and a relatively large deposit T may be the low-melt deposit T2. The small deposit T may be, for example, a deposit T having an outer diameter in a range of 10 mm to 100 mm, and the large deposit T may be, for example, a deposit T having an outer diameter in a range of 100 mm to 500 mm. . Also, as a physical standard, for example, the deposit T having a specific gravity of the deposit T lower than a predetermined specific gravity is the easily meltable deposit T1, and the deposit T having a specific gravity of the higher than the predetermined specific gravity is difficult It may be a molten deposit T2. For example, if the specific gravity is less than 1.2, it may be the easily molten deposit T1, and if the specific gravity is 1.2 or more, it may be the hardly molten deposit T2. However, the size and weight of the deposit T depend on the grinding condition in the grinding process described later. Therefore, a relatively small deposit T may be used as the easily melted deposit T1 and a relatively large deposit T may be used as the hardly molten deposit T2 in a state where the deposit T is crushed. Alternatively, when the deposit T is crushed, the relatively light deposit T may be the easy-melt deposit T1, and the relatively heavy deposit T may be the hard-melt deposit T2. In the present embodiment, since the operation is performed in the melting portion 2, it is preferable that the sorting criteria for the easily melted deposit T1 or the hardly melted deposit T2 be a physical standard that is relatively easy to determine.

  The outlet 3 is a hole formed at the lowermost end of the melting portion 2. The outlet member 30 is installed in the outlet 3 of the present embodiment. The outlet 3 of the present embodiment is a circular hole.

  As shown in FIGS. 3 and 4, the tapping member 30 has a main body 31 placed on the edge of the tapping hole 3 and a groove 32 formed on the main body 31 and serving as a flow path of slag. Equipped with In the present embodiment, the tapping member 30 is formed in an annular shape. The groove portion 32 is formed so that the bottom surface is lower than the top surface of the main body portion 31. Further, in the present embodiment, a pair of groove portions 32 is formed at symmetrical positions with respect to the center. The pair of groove portions 32 is installed at a position corresponding to the lowest position of the primary side melting portion 2a or the secondary side melting portion 2b. While the melting furnace 1 is in operation, the slag flowing out from the primary side melting unit 2a flows out from the groove 32 installed on the primary side melting unit 2a side, and the slag flowing out from the secondary side melting unit 2b is the secondary side It flows out from the groove part 32 installed in the fusion | melting part 2b side.

  The discharge part 4 is a cylindrical member connected to the melting part 2 so that the inner peripheral surface is continuous with the inner peripheral surface of the outlet 3. The discharge part 4 has an opening on the upper end side connected to the melting part 2 and an opening on the lower end side is open to the outside (for example, a water tank for slag cooling). The discharge unit 4 is formed, for example, with an inner diameter that allows an operator to access the inside of the melting portion 2 from the opening on the lower end side while the operation of the melting furnace 1 is stopped. The discharge part 4 is formed so that an internal diameter may become 700 mm-1000 mm, for example.

  The deposit processing method according to the present embodiment is used when the melting furnace 1 configured as described above is shut down. Specifically, the operation of melting furnace 1 is stopped, and the inside of the furnace is used in a state where it has dropped to normal temperature. Hereinafter, the deposit processing method according to the present embodiment will be described.

  In the deposit processing method, a step of grinding the deposit T deposited on the deposition portion 21 in the melting portion 2 and a step of moving the crushed deposit T from the deposition portion 21 to the high temperature portion 22 in the melting portion 2 And In the present embodiment, the moving step is a step of moving the crushed deposit T to the high temperature portion 22 formed at a position away from the outlet 3. The deposit processing method is the high temperature portion 22. The method further includes the step of forming a recess 241 extending from the bottom to the outlet 3. In the deposit processing method of the present embodiment, the crushed deposit T is placed on the inclined surface 23 formed in the high temperature portion 22, and among the crushed deposits T, it is easy to melt. The method further includes the step of placing the easily meltable deposit T1 on the other end side of the hardly meltable deposit T2 that is more difficult to melt than the easily meltable deposit T1. In this case, the deposit processing method may include the step of inserting the wedge member S between the inclined surface 23 and the end P (see FIG. 5) of the refractory deposit T2 on the spout 3 side. . Furthermore, even if the deposit processing method includes the step of circulating the hot air W for melting the deposit T transferred to the high temperature part 22 from the high temperature part 22 toward the outlet 3 in the melting furnace 1 Good.

  In the deposit processing method according to the present embodiment, a working main body is used in the melting section 2 in order to grind and move the deposit T of the deposition section 21. Therefore, the deposit processing method includes the step of the work main body entering the melting portion 2. In the present embodiment, it is assumed that a worker as a work subject enters the melting unit 2, and the worker carries out the work in each step in the melting unit 2.

  In the present embodiment, as shown by the arrows in FIG. 2, the deposit T deposited on the secondary side melting portion 2 b is moved to the primary side melting portion 2 a. That is, in the present embodiment, the deposition part 21 is a part of the secondary side melting part 2 b, and the high temperature part 22 is a part of the primary side melting part 2 a. Further, in the present embodiment, the deposit T deposited on the secondary side melting portion 2b is moved to a position away from the tapping hole 3 in the primary side melting portion 2a. Furthermore, in the present embodiment, the deposit T is placed on the inclined surface 23 of the high temperature portion 22. Each step will be described below.

  In the grinding step, the operator uses a tool such as a chipper to grind the deposit T and peel it off the inner wall of the melting portion 2. That is, the step of grinding can also be expressed as the step of picking up the deposit T.

  In the moving step, the operator moves the crushed deposit T across the outlet 3 to the primary-side melting portion 2 a. Specifically, the worker places the deposit T separated from the inner wall of the secondary melting portion 2b in a container such as a bucket and moves the container to the primary melting portion 2a. The operator takes out the moved deposit T from the container and places it on the primary side melting portion 2a. The operator may carry out the step of moving all of the deposit T on the ground (moving) in the step of grinding, or the portion of the deposit T was ground (in the step of grinding) ) May be carried out. That is, the worker may carry out the moving step after the grinding step, or may alternately carry out the grinding step and the moving step.

  In the moving step, the worker moves the deposit T to a position away from the outlet 3 in the primary side melting portion 2a. Specifically, the worker moves the deposit T to the lower side of the one torso portion 201a. The deposit T can be exposed to the higher temperature portion of the hot air W flowing from the one barrel 201 a to the bottom 202 by moving the one below the one barrel 201 a to the lower side.

  In the step of forming the recess 241, the operator grinds and removes the deposit T deposited on the intermediate portion 24 to form the recess 241. The operator grinds (drops) the deposit T deposited on the intermediate portion 24 using a tool such as a chipper, for example. In the step of forming the recess 241, the recess 241 is formed so as to be connected to the groove 32 formed in the tapping member 30. That is, the recess 241 is a runner for guiding the melted deposit T to the groove 32 when the transferred deposit T melts when the melting furnace 1 is in operation (temperature rise). By forming the concave portion 241 so as to be connected to the groove portion 32, the deposit T melted at the time of temperature rise due to operation passes along the groove portion 32 and emerges. Therefore, the deposit T can be discharged safely at the time of temperature rise.

  As shown in FIG. 5, in the placing step, the large deposit T is placed as one of the hardly molten deposits T2 on one end side of the inclined surface 23 (the outlet 3 side), and the small deposits T are easily deposited by melting. It mounts on the other end side (body part 201 side) of inclined surface 23 as thing T1. That is, the low melting deposits T2 and the high melting deposits T1 are aligned in the lateral direction. In the present embodiment, the easily molten deposit T1 and the hardly molten deposit T2 are sorted and placed as described above after the movement of the deposit T (that is, after the moving step). Therefore, the step of mounting includes the step of sorting the deposit T into the easily melted deposit T1 and the hardly melted deposit T2. Further, in the mounting step, the relatively large deposit T out of the easily meltable deposit T1 is placed on the lower side in the height direction, and the relatively small deposit T is stacked thereon to increase the height. The deposit T may be placed to be bulky in the longitudinal direction. Similarly, in the mounting step, relatively large deposits T among the low melting deposits T2 may be placed on the lower side in the height direction, and relatively small deposits T may be stacked thereon. By moving the large deposit T to the lower side in the height direction as described above, the moved deposit T may be made less likely to collapse.

  Further, as shown in FIG. 5, in the inserting step, the easily molten deposits T1 are collected and put together to form a wedge member S, and the end portion P on the tapping hole 3 side and the inclined surface 23 in the difficultly melting deposits T2. You may insert in between. Further, in the inserting step, another member having a wedge shape may be inserted between the refractory deposit T2 and the inclined surface 23. The inserting step is performed after the low melting deposit T2 is placed. Therefore, the inserting step may be performed after the low melting deposit T2 is placed in the middle of the mounting step, or after the low melting deposit T2 and the high melting deposit T1 are placed. That is, it may be performed after the mounting step.

  After the above operation, after the worker completely withdraws from the melting furnace 1, the melting furnace 1 is operated to carry out the process of circulating the hot air W.

  As described above, the deposit processing method according to the above-described embodiment includes the steps of: grinding the deposit T deposited in the deposition unit 21; moving the crushed deposit T from the deposition unit 21 to the high temperature unit 22; Is equipped. According to this configuration, the deposit T deposited in the deposition section 21 is crushed and moved to the high temperature section 22. Therefore, when the melting furnace 1 is operated, the deposit T remaining without melting is exposed to a high temperature The deposit T can be melted to such an extent that the deposit T is discharged from the outlet 3. Therefore, the deposit T can be melted and recovered, and the recovery rate of the slag can be improved.

  In the above embodiment, the moving step is a step of moving the crushed deposit T to the high temperature part 22 formed at a position away from the outlet 3. The deposit processing method is the high temperature part The method further includes the step of forming a recess 241 extending from the surface 22 to the outlet 3. Therefore, when the deposit T moved to the high temperature part 22 is melted during the operation of the melting furnace 1, the melted deposit T flows through the recess 241 extending from the high temperature part 22 to the outlet 3 to the outlet 3 Led. Therefore, the melted deposit T can be smoothly discharged from the outlet 3.

  Further, in the above embodiment, the deposit processing method is a step of placing the crushed deposit T on the inclined surface 23 formed in the high temperature portion 22, and melting of the crushed deposit T is performed. And a step of placing the easy-to-melt deposit T1 on the other end side of the hard-to-melt deposit T2 which is more difficult to melt than the easy-to-melt deposit T1. According to this configuration, on the inclined surface 23 of the high temperature portion 22, the easily molten deposit T1 that is easy to melt is placed on the high side, and the hardly molten deposit T2 that is hard to melt is placed on the low side. Therefore, since the deposit T placed at a high position on the inclined surface 23 is more likely to melt than the deposit T placed at a low position, the deposit T is gradually melted from above the inclined surface 23 When the deposit T is melted, the deposit T placed on the inclined surface 23 can be made difficult to collapse.

  Moreover, in the said embodiment, the deposit processing method is equipped with the process of inserting the wedge member S between the edge part by the side of the tapping hole 3 in the low melting deposit T2, and the said inclined surface 23. FIG. Therefore, since the deposit T located on the lowest side of the inclined surface 23 can be prevented from rolling on the inclined surface 23 by the wedge member S, the deposit T can be made difficult to collapse.

  Further, in the above embodiment, the melting furnace 1 is provided with the high temperature part 22 and the outlet 3 side by side, and the deposit processing method is carried out from the high temperature part 22 into the melting furnace 1. A step of circulating hot air W for melting the deposit T transferred to the high temperature part 22 toward the mouth 3 is provided. Therefore, since the hot air W is circulated from the high temperature portion 22 toward the outlet 3, the deposit T in the high temperature portion 22 can be exposed to the high temperature hot air W, and can be efficiently melted.

  Moreover, in the said embodiment, after stop of the melting furnace 1, the deposit T deposited in the melting part 2 is moved in the melting part 2, and the melting furnace 1 is restarted. Therefore, the operator does not have to remove the deposit T from the melting portion 2 and further, it is not necessary to discard the removed deposit T. Therefore, according to the above-mentioned embodiment, since it is possible to omit the work of taking out the deposit T, the work of discarding the deposit T and the like, the work load can be reduced.

  The deposit processing method of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

  In the above-mentioned embodiment, although a case where a worker performs a concrete work using a deposit processing method as a work subject is explained, an apparatus may be used as a work subject. For example, a device such as a robot for grinding the deposit T may be introduced into the furnace to automatically grind the deposit T. Alternatively, a device such as a robot for moving the deposit T from the deposition unit 21 to the high temperature unit 22 may be inserted into the furnace to move the deposit T by the device. That is, each operation in the deposit processing method according to the above embodiment may be performed by an apparatus or the like other than the operator.

  Although the said embodiment demonstrated the case where deposit T deposited on the secondary side fusion | melting part 2b was moved to the primary side fusion | melting part 2a, it is not limited to this. Specifically, the deposition part 21 and the high temperature part 22 may both be formed in the secondary side fusion part 2 b. For example, even in the secondary-side fusion zone 2b, the upstream side of the deposition zone 21 may become hotter than the deposition zone 21 during operation. Also, for example, when a burner is additionally installed downstream of the deposition unit 21, the downstream side portion of the deposition unit 21 may be hotter than the deposition unit 21 during operation.

  Also, there may be a case where both the deposition part 21 and the high temperature part 22 are formed in the primary side fusion part 2a. Specifically, when the deposit T is deposited in the vicinity of the outlet 3 in the primary-side melted portion 2 a, the vicinity of the outlet 3 is the depositing portion 21. Then, the deposit T may be moved to the upstream side of the deposition unit 21. Thus, the positions of the deposition unit 21 and the high temperature unit 22 can be set at appropriate positions in the melting unit 2 without being limited to the secondary side melting unit 2 b or the primary side melting unit 2 a.

  In the above embodiment, in the moving step, the operator puts the crushed deposit T in a container such as a bucket and moves the container to the primary-side melting unit 2a, but the invention is limited thereto. It is not a thing. The operator may move the deposit T by throwing the crushed deposit T toward the primary side melting portion 2a, and the means for moving is not particularly limited.

  In the embodiment described above, in the process of forming the recess 241, the worker described the case where the recess T is formed by crushing and removing the deposit T deposited on the intermediate portion 24, but the invention is limited thereto. is not. For example, in the step of forming the concave portion 241, the deposit T moved from the deposition portion 21 to the high temperature portion 22 is arranged from the high temperature portion 22 toward the outlet 3 to form a weir, thereby forming the concave portion 241 It is also good. Further, in the step of forming the concave portion 241, a concaved member may be disposed between the high temperature portion 22 and the outlet 3 to form the concave portion 241. Further, in the step of forming the recess 241, the deposit T deposited on the intermediate portion 24 is removed, and the removed deposit T and the deposit T moved from the deposition portion 21 are heated along the removed portion. The depth of the recess 241 can also be adjusted by arranging from 22 to the outlet 3.

  Although the mounting step includes the step of sorting the deposit T into the easily melted deposit T1 and the hardly melted deposit T2 in the above embodiment, the present invention is not limited to this. The moving step may include the step of sorting the deposit T into the easily melted deposit T1 and the hardly melted deposit T2. Specifically, in the moving step, after the grinding step, the easy-melting deposit T1 and the hard-melting deposit T2 are sorted and then moved sequentially for each easy-melting deposit T1 or hard-melting deposit T2 May be In this case, in the moving step, the low melting deposit T2 may be moved earlier than the easy melting deposit T1, and the low melting deposit T2 may be mounted. Then, the step of moving the easy-melting deposit T1 in a state in which the low-melting deposit T2 is placed and the placement portion is stabilized, and the step of placing the easy-melting deposit T1 may be performed.

DESCRIPTION OF SYMBOLS 1 ... Melting furnace, 2 ... Melting part, 2a ... Primary side melting part, 2b ... Secondary side melting part, 21 ... Deposition part, 22 ... High temperature part, 23 ... Slope surface, 24 ... Intermediate part, 201 ... Body part, 201a ... one body, 201b ... the other body, 202 ... the bottom, 241 ... the recess, 3 ... the outlet, 30 ... the outlet member, 31 ... the main body, 32 ... the groove, 4 ... the outlet, S ... Member, T: Deposit, T1: easy melting deposit, T2: difficult melting deposit, W: hot air

Claims (5)

A melting furnace in which a melting portion for melting a melting object and an outlet for discharging the melted object to be melted from the melting portion are formed, and a degree of discharge from the outlet into the melting portion A deposit processing method for processing deposits deposited in a melting furnace in which a deposition part where non-melted melting target deposits and a high temperature part which becomes hotter than the deposition part during operation are formed,
Grinding the deposit deposited on the deposit portion;
Moving the crushed deposit from the deposition section to the high temperature section. The moving step is a step of moving the crushed deposit to a high temperature part formed at a position away from the outlet port,
The deposit processing method according to claim 1, further comprising the step of forming a recess extending from the high temperature portion to the outlet port. The crushed deposit is formed on the high temperature portion, and the crushed surface is inclined downward toward the outlet so that one end on the outlet side is lower than the other end opposite to the outlet. A process of placing an object,
The method according to claim 1, further comprising the step of placing the easily meltable deposit among the crushed deposits on the other end side of the difficult-to-melt deposits that are more difficult to melt than the easy-melt deposits. Or the deposit processing method as described in 2.   The deposit processing method according to claim 3, further comprising the step of inserting a wedge member between an end on the tapping hole side of the hardly molten deposit and the inclined surface. In the melting furnace, a high temperature part and a tapping hole are provided side by side,
The process according to any one of claims 1 to 4, further comprising the step of circulating hot air for melting deposits transferred to the high temperature part from the high temperature part toward the outlet in the melting furnace. Sediment treatment method.

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