WO2019045220A1

WO2019045220A1 - Flattening device and flattening method

Info

Publication number: WO2019045220A1
Application number: PCT/KR2018/005378
Authority: WO
Inventors: 서승국; 김현수; 김다희; 정하명; 유재상
Original assignee: 주식회사 포스코
Priority date: 2017-08-29
Filing date: 2018-05-10
Publication date: 2019-03-07
Also published as: KR101927772B1

Abstract

The present invention relates to a flattening device and a flattening method and, specifically, to a method for flattening raw materials charged in a container, the method comprising the steps of: inserting a leveler into one side of the container; lowering an insert provided in the leveler and inserting the insert into the raw materials; and generating vibration of the insert. By the present invention, charging density and charging level of raw materials can be made uniform.

Description

Planarizer and method thereof

The present invention relates to a flattening apparatus and a method thereof, and more particularly, to a flattening apparatus and a flattening method that can uniformize a charging density and a charging level of a raw material.

Generally, the coke used in the blast furnace operation of a steel mill is subjected to various stages of processing in advance. For example, coke is charged into a carbonization chamber of a coke oven in a large amount (about 32 tons) of coking coal, heated at about 1400 ° C for about 18 hours, extruded and cooled in a separate fire extinguishing facility Process.

In this case, a coking oven is provided at the top of the coke oven to supply coking coal, and a plurality of, for example, four coking ovens for charging coal are installed on the upper surface of the coking oven.

The charging of the coal is carried out by a charging car running on the upper part of the coke oven. After charging the coal from the coal storage tank located in the middle of the coke oven, the coal is moved to the carbonizing chamber to be worked, A certain amount is charged.

In the charging operation, the level of the carburizing chamber (LEVEL) is a factor related to the reduction of the heat consumption and the improvement of the coke productivity. However, it is difficult to escape through the rising pipe because a large amount of gas is generated from the coal during the progress of the carbonization. Therefore, it is important to maintain an adequate level because a certain space is required to escape the generated gas.

Conventionally, since the amount of coal to be charged is determined by measuring the weight of the charging burden, the level of the charging burden charged into the carburizing chamber has not been known. Even if the same amount of coal is charged, the charge amount is determined depending on the experience of the driver because the level difference is large even by the specification of each carbonization chamber and the moisture content of the charging burr. However, when the amount of coal is small, there is a problem that the coke oven may be damaged due to local overheating at the time of carbonization, and the production amount is also lowered. In addition, when the amount of coal charged is large, there is a problem that the passage of the exhaust gas generated at the time of the carbonization is clogged and the heat is unevenly transferred, the quality of the coke is deteriorated and the exhaust gas is discharged to the outside by the coke oven door.

(Prior art document 1) KR1614589 B

(Prior art document 2) KR0893468 B

The present invention provides a planarization apparatus and a method for uniformizing a charging level of a raw material.

The present invention provides a planarization apparatus and method for improving process efficiency and product quality by uniformizing the charging density of a raw material.

A planarization apparatus according to an embodiment of the present invention includes: a leveler insertable into one side of a container; An inserter connected to the leveler such that at least part of the inserter is movable in a vertical direction; And a power source unit capable of supplying power to the insertion unit to generate vibration.

Wherein the container has a space in which a raw material can be received, a slot for charging the raw material into the space, a door capable of inserting the leveler at one side thereof, And can reciprocate from one side of the container to the other side.

The inserting unit includes: a driver connected to the leveler; An insert insertable into the raw material; And a drive shaft connected to the actuator to move the insert in the vertical direction.

The inserter may be connected to the leveler so that when the leveler is pulled into the container, the inserter can be placed on both sides of the entry port.

The insert may be connected to the leveler such that when the leveler is moved, the insert is positioned at a higher position than the bottom of the leveler.

The insert may include a vibrator capable of generating vibration by receiving power from the power source unit.

The insert may form a guide groove in the longitudinal direction on the outer circumferential surface.

The container may comprise a carbonization chamber of a coke oven.

A planarizing method according to an embodiment of the present invention is a method of flattening a raw material charged into a container, comprising the steps of: inserting a leveler into one side of the container; A step of lowering the insert provided in the leveler and inserting the insert into the raw material; And generating vibration in the insert.

The step of inserting the leveler may include a step of disposing the insert on both sides of a bow inlet of the container into which the raw material is to be loaded.

In the process of inserting the leveler into the container, the lower portion of the leveler may be brought into contact with the raw material to flatten the raw material, and the insert may be separated from the raw material.

The process of generating vibration in the insert can flatten the raw material by propagating vibration generated in the insert to the raw material and moving the raw material in a region having a low step difference from a region having a high step difference.

The process of generating vibration in the insert can propagate the vibration generated in the insert to the raw material to move the raw material to a region having a low charging density in a region where the charging density is high to uniformize the charging density of the raw material have.

The process of generating vibration in the insert may include moving the insert in the up-and-down direction while inserting the insert.

A step of raising the insert and separating the insert from the raw material after the process of generating vibration in the insert; And withdrawing the leveler from the container.

According to the embodiment of the present invention, the charging level and the charging density of the raw material charged into the container can be made uniform. For example, it is possible to uniformize the charging level of coal charged into the carbonization chamber in the process of producing the coke, thereby uniformly carrying out the carbonization throughout the coal charged in the carbonization chamber. This makes it possible to suppress the deterioration of the quality of the coke which may occur locally in the carbonization chamber.

In addition, it is possible to uniformize the charging density of coal charged in the carbonization chamber to suppress or prevent the carbonization chamber from being damaged due to the expansion pressure generated during the carbonization, to increase the throughput of the raw material, .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a configuration of a coke oven facility to which a planarizing apparatus according to an embodiment of the present invention is applied; FIG.

2 is a view schematically showing a configuration of a planarization apparatus according to an embodiment of the present invention.

Figure 3 shows various examples of an insert.

4 is a view for explaining an installation position of an insert.

5 is a view showing a use state of the planarization apparatus according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and it is to be understood that these embodiments are merely illustrative of the principles of the invention and are not intended to limit the scope of the invention to those skilled in the art. It is provided to let you know completely.

The planarizing apparatus and method according to the present invention can uniformize the charging level and the charging density of the raw material after charging the raw material into the container. In the embodiment of the present invention, an example of charging coal into a carbonization chamber of a coke oven and then planarizing the coal is described, but the present invention can be applied to planarizing raw materials in various operations. At this time, the raw material may be coal to be a raw material of the coke, and the container may be a carbonized chamber of a coke oven.

FIG. 1 is a view schematically showing the construction of a coke oven facility to which a planarizing apparatus according to an embodiment of the present invention is applied, FIG. 2 is a view schematically showing the construction of a planarizing apparatus according to an embodiment of the present invention, Fig. 4 is a view for explaining an installation position of an insert. Fig.

Referring to FIG. 1, the coke oven facility includes a carbonization chamber 100 for carburizing coal as raw coal, a raw material charging device 200 installed at an upper portion of the carbonization chamber 100 for charging coal into the carbonization chamber 100, And an extruder 300 provided at one side of the carbonization chamber 100 for extruding the gypsum coke which has been completely dried.

A plurality of berthing openings 102 for charging coal are provided in the upper part of the carbonization chamber 100 and lids 104 for opening and closing the berthing openings 102 are provided. A coke oven door 110 for introducing the ram 310 of the extruder for extruding the coke produced in the carbonization chamber 100 is provided at one side of the carbonization chamber 100, A small door 120 is provided for entering the leveler 320 to flatten the raw material loaded in the chamber 100.

The raw material charging device 200 is provided so as to be movable above the carbonization chamber 100 to charge the coal into the carbonization chamber 100 through the inlet of the carbonization chamber 100. The raw material charging apparatus 200 includes a charge car 210 movably installed on a coke oven 100 and a reservoir 210 installed in the charge car 210 to store raw materials, And a loading unit 230 provided in the lower part of the storage unit to be movable up and down to supply coal stored in the storage unit through the entrance.

Such a configuration is well known in the art and will not be described in detail.

The extruder 300 is provided at one side of the carbonization chamber 100 and includes a ram 310 for drawing out the carbonized coke out of the carbonization chamber 100 to the outside, And a leveler 320 for leveling the coal charged in the furnace.

Here, the leveler 320 enters the small door 120 provided at one side of the carbonization chamber 100 and reciprocates to flatten the upper surface of the coal. Even if coal is flattened while reciprocating the leveler 320 in the carburizing chamber 100, a local charging density difference is generated due to the charging level difference occurring at charging. That is, the charging level is high at the lower portion just below the charging port 102 where the coal is charged, and the charging level between the charging port 102 and the charging port 102 or between the charging port 102 and the carbonization chamber 100 The charging level is low. In the region where the charging level is high, the charging density is high due to the load of the coal because a large amount of coal is charged in the region where the charging level is low. On the other hand, the charging density of the low charging level area is relatively lower than that of the charging charging area. When the surface layer of the coal is flattened using the leveler 320 in this state, the coal can only be moved to a region where the charging level is low in a region where the charging level is high, so that the charging density in the carburizing chamber 100 is locally .

Therefore, in the present invention, the leveler 320 for leveling the coal is provided with an insert for generating vibrations so as to uniformize the charging level of the coal in the process of charging the coal to the carbonizing chamber 100 and then planarizing the coal, and at the same time, .

Referring to FIG. 2, the planarization apparatus according to the embodiment of the present invention includes a leveler 320 that can be inserted into one side of a carbonization chamber 100, an insertion unit 400 that is vertically movable in the leveler 320, And a power source unit 500 capable of supplying power to the insertion unit 400 to generate vibration.

The leveler 320 is provided at one side of the carbonization chamber 100 and can enter or exit the inside of the carbonization chamber 100 through a door provided at one side of the carbonization chamber 100, for example, a small door 120.

The leveler 320 is formed in a bar shape which is elongated in one direction and opened in an up and down direction, and a plurality of partition walls 321 may be formed in the longitudinal direction along the length thereof. The leveler 320 has a width similar to that of the carbonization chamber 100 and may be formed longer than the length of the carbonization chamber 100. Here, the length of the carbonization chamber 100 is the same as the movement direction of the leveler 320, and the width of the carbonization chamber 100 may mean a direction crossing the horizontal direction with respect to the movement direction of the leveler 320. Accordingly, the leveler 320 may have a plurality of through-holes passing through the partition walls 321 in the vertical direction. When the leveler 320 is reciprocated within the carbonization chamber 100, the coal charged in the carbonization chamber 100 flows into the through-hole, and the coal charged in the high-level region flows into the low- The surface layer of the coal can be flattened.

At least a part of the inserting part 400 may be provided on the leveler 320 so as to be vertically movable and may be provided on the partition wall 321 provided on the leveler 320 or the inner wall around the through hole.

The inserter 400 includes a driver 410 connected to the leveler 320 and a driving shaft 420 connecting the inserter 420 and the inserter 420 inserted into the coal to the driver 410 so as to be movable up and down 430). At this time, the insert 420 may be a vibrator that receives power from the power source unit 500 and generates vibration.

When the driving shaft 430 is moved up and down by the operation of the driver 410, the driving shaft 430 can move up and down along the moving direction. The insert 420 may be formed with apices at the lower end thereof to minimize resistance when inserted into the coal.

Referring to FIG. 3 (a), the insert 420a may be formed in a conical shape. In addition, it may be formed in the shape of a polygonal pyramid such as a quadrangular pyramid or a pyramid.

Referring to FIG. 3B, a guide groove 421 may be formed on the outer surface of the insert 420b along the longitudinal direction of the insert 420b, for example, along the moving direction of the insert 420b.

Referring to FIG. 3 (c), the insert 420c may be formed in a rod shape. Although the insert 420c is shown here as being composed of four rods, the number of rods is adjustable.

The insert 420 may be formed in various shapes other than the shapes shown.

The drive shaft 430 can move the insert 420 in the vertical direction according to the operation of the driver 410. The drive shaft 430 may be provided so that at least a portion thereof can move along the inside of the insert 420.

The driver 410 can provide a driving force to move the driving shaft 430 in the up-and-down direction, that is, in a linear motion. At this time, the driver 410 and the drive shaft 430 may include a cylinder.

Herein, it is described that the driver 410 is connected to each insert 420, but a plurality of inserts may be moved up and down using one driver.

The power source unit 500 may supply power to the driver 410 and the insert 420 and may be installed outside the carbonization chamber 100.

The inserter 400 may be connected to the leveler 320 so that the leveler 320 is disposed on both sides of the entrance 102 when the leveler 320 is drawn into the carburizing chamber 100. The insert 420 constituting the inserting portion 400 is inserted into the coal so as to impart vibration, thereby moving the raw material to a region where the charging density is relatively low in the charging density region. In addition, in the region where the charging density is high, the charging density in the region where the charging density is relatively low can be increased while the charging density is somewhat reduced.

For this purpose, the insert 420 may be inserted into a region having a high charging density, that is, just below the entry port 102. In this case, the transfer may be performed in a region having the highest charging density, for example, To the valley portion V of the coal layer formed in the carbonization chamber 100 in the region where the charging density is the lowest in the mountain portion P of the carbonization chamber 100, for example. Therefore, as shown in Fig. 4, the ratio of the distance H0 between the region where the charging density is high and the region where the charging density is low, that is, the distance from the mountain portion P to the valley V on both sides of the entry port 102, It is possible to insert the insert 420 at a position H1 of about 2 degrees to uniform the charging density.

On the other hand, when the valley V is deeply formed, even if the coal layer is flattened using the leveler 320, the valley V may not be completely removed. In this case, the valley (V) can be removed by moving and dispersing the coal layer by the vibration provided by the insert (420).

The insert 420 may be disposed at a position higher than the bottom of the leveler 320 so as not to be in contact with the coal layer when the leveler 320 is moved within the carbonization chamber 100. This is to prevent the insert 420 from being damaged by contact with the coal layer when the leveler 320 is moved inside the carbonization chamber 100.

Hereinafter, a method for planarizing coal using the planarization apparatus according to an embodiment of the present invention will be described.

5 is a view illustrating a use state of the planarization apparatus according to an embodiment of the present invention.

The planarization method according to an embodiment of the present invention may include a step of inserting a leveler into one side of a container, a step of inserting the leveler into a raw material by lowering the inserter, and a step of generating vibration in the inserter . Here, the container is a carbonization chamber of a coke oven, and the raw material may be coal.

First, when the carbonized coke is extruded, a new coke is charged into the carbonization chamber 100 of the coke oven. The lift is lowered to attach the lead 104 to the electromagnet to open the entry port 102 and move the charge difference 210 to avoid the lift from the entrance port 102. [ Then, the coal is introduced into the coal inlet chamber 102 of the coke oven through the coal inlet 102 after the coal intake is lowered and inserted into the coal inlet 102.

When the charging of the coal is completed, the loading device 230 inserted in each of the entry ports 102 is sequentially raised and the lift is moved so that the reed 104 is moved to the upper side of the entry port 102 and then lowered, (102).

The small door 120 of the carbonization chamber 100 is opened and the leveler 320 is introduced into the interior of the carbonization chamber 100 through the small door 120 to form the carbonization chamber 100 as shown in FIG. (100). At this time, the leveler 320 may partially planarize the surface of the coal layer as it passes along the upper portion of the coal layer. The inserter 420 installed in the leveler 320 may be disposed on both sides of the intestinal inlet 102.

Thereafter, when the leveler 320 enters the inside of the carbonization chamber 100, power is supplied to the driver 410 through the power supply unit 500. When power is supplied to the driver 410, the driver 410 generates power to move the drive shaft 430 downward, thereby inserting the insert 420 into the coal layer.

When the insert 420 is inserted into the coal layer, the power supply unit 500 supplies power to the insert 420 to generate vibration.

As the insert 420 vibrates, the surrounding coal into which the insert 420 is inserted is moved and dispersed to a region having a low charging density in a region having a high charging density as shown in FIG. 5 (b). The charging density of the coal in the carbonization chamber 100 can be made uniform as a whole.

Further, the coal moves to the valley (V) side not removed by the leveler 320, and the surface of the coal layer is flattened.

The process of generating vibration in the insert 420 may be performed for several seconds to several minutes.

The power supply unit 500 may supply power to the driver 410 to move the insert 420 in the vertical direction while generating vibration in the insert 420. [ In this case, it is possible to accelerate the movement of the coal in the process of moving the insert 420 in the vertical direction, thereby accelerating the uniforming of the charging density and the charging level.

Thereafter, power supplied to the insert 420 is cut off, and power is supplied to the driver 410 to raise the insert 420.

Then, the leveler 320 is retracted and drawn out from the carbonization chamber 100.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims and equivalents thereof.

The planarizing apparatus and method according to the embodiment of the present invention can uniformize the charging density of coal charged in the carbonization chamber of the coke oven at the time of manufacturing the coke oven to suppress or prevent the damage of the carbonization chamber due to the expansion pressure generated during the carbonization The throughput of the raw material can be increased, and the production amount can be improved.

Claims

A leveler insertable into one side of the container;

An inserter connected to the leveler such that at least part of the inserter is movable in a vertical direction; And

And a power supply unit capable of supplying power to the insertion unit to generate vibration.
The method according to claim 1,

The container may include:

And a door for inserting the raw material is formed in the space, a door for inserting the leveler is provided on one side,

Wherein the leveler is reciprocally movable from one side of the container to the other side.
The method of claim 2,

The insertion portion

A driver connected to the leveler;

An insert insertable into the raw material; And

And a drive shaft connected to the driver to move the insert in the vertical direction.
The method of claim 3,

The insertion portion

Wherein the leveler is connected to the leveler so that when the leveler is drawn into the container, the insert is disposed on both sides of the entry port.
The method of claim 4,

Wherein the inserting portion connects to the leveler such that when the leveler is moved, the inserter is disposed at a position higher than the bottom of the leveler.
The method of claim 5,

Wherein the insulator includes a vibrator capable of generating vibration by receiving power from the power source unit.
The method of claim 6,

Wherein the insert has a guide groove formed in a longitudinal direction on an outer circumferential surface thereof.
The method according to any one of claims 1 to 7,

Wherein the container comprises a carbonization chamber of a coke oven.
A method for planarizing a raw material charged into a vessel,

Inserting a leveler into one side of the container;

A step of lowering the insert provided in the leveler and inserting the insert into the raw material; And

Generating vibration in the insert;

&Lt; / RTI >
The method of claim 9,

The step of inserting the leveler comprises:

And disposing the insert on both sides of a bow inlet of the container into which the raw material is to be loaded.
The method of claim 10,

In the course of inserting the leveler into the container,

Contacting the lower portion of the leveler with the raw material to flatten the raw material,

Wherein the insert is spaced apart from the raw material.
The method of claim 11,

The process of generating vibration in the insert includes:

And propagating the vibration generated in the insert to the raw material to move the raw material in a region having a high step difference and a region having a low step difference, thereby planarizing the raw material.
The method of claim 11,

The process of generating vibration in the insert includes:

And propagating the vibration generated in the insert to the raw material to move the raw material to a region having a low charging density in a region where the charging density is high to equalize the charging density of the raw material.
The method according to claim 12 or 13,

The process of generating vibration in the insert includes:

And moving the insert in a vertical direction while inserting the insert into the raw material.
15. The method of claim 14,

After the process of generating vibration in the insert,

Raising the insert to separate it from the raw material;

And withdrawing the leveler from the container.