KR101845237B1 - Apparatus for drying raw material and method for drying thereof - Google Patents

Abstract

The present invention relates to a raw material drying device and a drying method. More specifically, the present invention relates to a raw material drying device designed to dry raw materials such as coal, and a drying method. According to an embodiment of the present invention, the raw material drying device comprises: a drying unit having an internal space for drying introduced raw materials by laterally moving the same; and at least one partition unit dividing the internal space in the drying unit into a plurality of spaces which are connected along a lateral direction. The partition unit is installed while being movable in a vertical direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drying apparatus,

The present invention relates to a raw material drying apparatus and a drying method, and more particularly, to a raw material drying apparatus and a drying method for drying a raw material such as coal.

Demand for coal for iron ore and metallurgical coke production is increasing due to the rapid increase in global crude steel production. Therefore, it is increasingly difficult for coal prices to surge and concerns over the exhaustion of high quality coking coal. Under these circumstances, various technologies have been developed and developed to diversify the coal used in the production of metallurgical coke and to increase the use ratio of the uncooked coal having weak point resistance.

As a pre-treatment technology for coal, a drying technique for reducing moisture of coal charged in a coke oven is mainly utilized. A fluidized bed dryer having excellent drying efficiency is mainly used for moisture drying of coal. Inside the fluidized bed dryer, the coal is fluidized and dried by hot air. The dried coal is discharged from the fluidized bed dryer, and the pulverized coal generated in the process of drying the coal is collected by the dust collector by the supplied hot air flow rate. The pulverized coal collected in the dust collecting facility is mixed with water or a binder to form a certain type of pulverized coal, and the pulverized pulverized coal is mixed with dried coal in a fluidized bed dryer and then supplied into a coke oven to be made into coke.

On the other hand, when coal is dried in a fluidized bed dryer, coal having various particle diameters is supplied into the fluidized bed dryer, hot air is supplied from the lower part of the fluidized bed dryer, and coal is dried while hot air comes into contact with the coal. However, some of the supplied coal can accumulate in the dispersion plate without forming a fluidized bed. This occurs because the particle size of the coal is not uniform. Unfractionated coal or coal having a large particle size of about 10 mm or more can not be formed into a fluidized bed by hot air, and is accumulated on a dispersion plate. Also, even if the moisture content of coal increases according to the seasonal factors or the difference of the origin, the fluidized bed can not be formed by the hot wind and is accumulated in the dispersion plate. When the coal is accumulated on the dispersion plate, there arises a problem that the dispersion hole formed to supply the hot air to the dispersion plate is clogged.

Accordingly, if the flow rate of the hot air is increased so that the coal deposited on the dispersion plate can form a fluidized bed, the energy consumption of the blower is increased and a large amount of fine particles is discharged to the outside of the fluidized bed dryer to lower the process yield, It can act as a cause. In addition, when the phenomenon of clogging of the dispersion holes occurs, it takes more time than 48 hours to separate and repair the equipment, which results in a decrease in productivity and an increase in energy loss required for preheating during operation of the equipment.

KR 10-2012-0075167 A

The present invention provides a raw material drying apparatus and a drying method capable of efficiently drying a raw material.

The present invention also provides a raw material drying apparatus and a drying method capable of reducing energy consumption and reducing environmental pollution.

The apparatus for drying a raw material according to an embodiment of the present invention includes a drying unit having an internal space for drying a raw material to be introduced laterally and drying the raw material; And at least one partition part dividing the inner space of the drying part into a plurality of spaces communicating along the lateral direction, and the partition part is installed to be movable in the vertical direction.

A raw material supply unit connected to one side of the drying unit to supply the raw material; And a discharge unit connected to the other side of the drying unit and discharging the dried raw material to the outside.

The discharging portion may include a first discharging portion and a second discharging portion, and the second discharging portion may be connected to the drying portion at a lower portion of the first discharging portion.

The drying unit may include a dispersion plate provided on the bottom surface and having a plurality of through-holes.

The dispersion plate may be formed to be inclined downward along the moving direction of the raw material.

And a vibration unit for applying vibration to the dispersion plate.

The partition wall partitions the internal space of the drying part into a plurality of spaces communicating at least one of the upper part and the lower part.

The partition wall portion may be installed to be rotatable about an axis extending in a vertical direction.

And a gas supply unit installed at a lower portion of the dispersion plate to supply gas to the inner space.

The gas supply unit may supply the gas at different pressures for the plurality of spaces.

According to another aspect of the present invention, there is provided a method for drying a raw material, the method comprising: dividing a partition wall into a plurality of spaces communicating with an upper portion along a lateral direction; Feeding the raw material to the drying unit; Supplying a gas into the internal space of the drying unit, moving the charged raw material along a communicated upper portion of the internal space and drying the raw material; And discharging the dried raw material to the first discharge portion.

In the process of discharging the dried raw material to the first discharge unit, the discharge amount of the raw material discharged to the first discharge unit can be controlled by rotating the partition wall at a predetermined angle.

The step of discharging the dried raw material to the first discharge unit may control the degree of classification of the raw material by controlling the pressure of the gas supplied to the space adjacent to the first discharge unit among the plurality of spaces.

Raising the partition wall portion to divide an internal space of the drying portion into a plurality of spaces communicating with the lower portion along the lateral direction; Moving the raw material located in the lower portion of the internal space along the communicated lower portion of the internal space; And discharging the moved raw material to the second discharge unit.

The process of moving along the communicated lower portion of the inner space may move the fuel located below the inner space by its own weight on the dispersion plate disposed so as to be inclined downward toward the second discharge portion.

The process of moving along the communicated lower portion of the inner space may move the fuel located at the lower portion of the inner space to the second outlet portion.

According to the raw material drying apparatus and the drying method according to the embodiment of the present invention, it is possible to improve the fluidization of the raw material and efficiently dry the raw material. That is, the raw material having various particle diameters and moisture contents can not flow during the drying of the raw material, and the raw material for forming the fixed layer can be easily discharged, thereby preventing or preventing the clogging of the dispersing plate.

Further, the discharge of the raw material can be controlled by moving or rotating the partition wall in the vertical direction, and the degree of classification of the discharged raw material can be easily controlled by controlling the pressure of the gas supplied to the internal space of the drying unit.

This makes it easy to maintain and repair the pretreatment equipment for drying the raw material, and it is possible to remarkably improve the productivity and energy efficiency of the entire equipment.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the construction of a raw material drying apparatus according to an embodiment of the present invention; Fig.
2 is a view showing a state in which a partition wall moves upward according to an embodiment of the present invention;
3 is a view showing a state in which the partition wall is rotated according to an embodiment of the present invention;
4 is a view schematically showing a configuration of a raw material drying apparatus according to a modified example of the present invention.
5 is a flow chart schematically illustrating a method for drying a raw material according to an embodiment of the present invention.

The raw material drying apparatus and the drying method according to the present invention can not flow during drying of raw materials having various particle sizes and moisture contents and can easily discharge the raw material forming the fixed layer to prevent or prevent clogging of the dispersing plate. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, Is provided to fully inform the user. Wherein like reference numerals refer to like elements throughout.

In each of the embodiments of the present invention described below, an example of drying coke oven coal as a raw material will be described. However, the present invention is not limited thereto, and it goes without saying that the present invention can be applied to all kinds of raw materials having various uses including coal.

FIG. 1 is a view schematically showing the construction of a raw material drying apparatus according to an embodiment of the present invention, FIG. 2 is a view showing a state in which a partition wall moves upward according to an embodiment of the present invention, and FIG. Fig. 5 is a view showing a state in which the partition walls are rotated according to the embodiment. 4 is a view schematically showing a configuration of a raw material drying apparatus according to a modification of the present invention.

Referring to FIGS. 1 to 4, the raw material drying apparatus according to the embodiment of the present invention includes a drying unit 200 having an internal space for drying a raw material to be introduced laterally and drying the raw material; And at least one partition wall part 400 partitioning the internal space of the drying part 200 into a plurality of spaces communicating with each other in the transverse direction. The partition wall part 400 is movable in a vertical direction Respectively. The raw material drying apparatus includes a raw material supply unit 100 connected to one side of the drying unit 200 to supply raw materials; And a discharge unit connected to the other side of the drying unit 200 to discharge the dried raw material to the outside. The discharge unit may include a first discharge unit 300 for discharging the raw material forming the fluidized bed, And a second discharging part 500 for discharging the raw material forming the fixing layer.

The raw material supply unit 100 supplies coal to the internal space of the drying unit 200. The coal is supplied through a raw material supply unit 100 connected to a raw material supply port of the drying unit 200, for example, after a predetermined amount of coal is discharged using a cutter such as a screw feeder at the bottom of the hopper, .

The drying unit 200 may be formed in a hollow shape in which an internal space for receiving and drying coal supplied from the raw material supply unit 100 is formed. The drying unit 200 may include a substantially rectangular cylindrical wall 210 having a lower end opened and a dispersion plate 230 installed on the bottom of the wall 210. The dispersion plate 230 may have a shape of a plate for dividing the inner space of the drying unit 200 at the bottom surface and may include a plurality of plates for uniformly dispersing the gas supplied from the lower portion into the inner space of the drying unit 200 A through-hole 235 may be formed.

The drying unit 200 dries the coal to be introduced by the gas introduced from the dispersion plate 230 in the lateral direction. The raw material supply unit 100 for supplying coal is connected to one side of the drying unit 200 and the coal that is fluidized and dried from the gas introduced from the dispersing plate 230 is discharged to the other side of the drying unit 200 The first discharge unit 300 is connected. Therefore, the coal that is fluidized along the first discharge portion 300 is formed from the raw material supply portion 100, and the coal that is introduced into the internal space flows from the raw material supply portion 100 to the side along the first discharge portion 300 And then dried.

The first discharge unit 300 flows through the internal space of the drying unit 200 to discharge the dried coal to the outside. The coal discharged to the outside may be stored in a storage (not shown) storing the dried coal or may be supplied to a transfer device (not shown) for transferring the dried coal. At this time, the conveying device may be a conveyor belt, and the conveying device may be provided with a hygrometer for measuring the moisture content of the dried coal.

The partition part 400 divides the internal space of the drying part 200 into a plurality of spaces along the lateral direction. Although the internal space of the drying unit 200 is divided into three spaces by the partition 400 in the drawing, the internal space defined by the partition 400 may be divided into a number of the partition walls 400 It is to be understood that the present invention may be embodied in many different ways. A first space 250a and a second space 250b are formed along the first discharge unit 300 from the raw material supply unit 100 with respect to the internal space partitioned by the partition wall unit 400 into a plurality of spaces, And a third space 250c.

The partition part 400 is formed at a height lower than the height of the inner space of the drying part 200. In addition, the partition part 400 is installed in the drying part 200 so as to be movable in the vertical direction. Accordingly, when the partition 400 is located at the lower end of the inner space of the drying unit 200, the partition 400 includes a first space 250a, a second space 250b, 3 space 250c. As the partition 400 moves upward, the inner space is partitioned so that the upper part and the lower part communicate with each other. In the drawing, the partition 400 separating the first space 250a and the second space 250b and the partition 400 partitioning the second space 250b and the third space 250c have the same height The partition walls 400 may be formed to have different heights and the second spaces 250b and the second spaces 250b may be formed to have a different height than the partition walls 400 partitioning the first spaces 250a and the second spaces 250b. A plurality of partition walls 400 may be formed such that the height of the partition wall 400 partitioning the first space 300 and the third space 250c is lowered in order toward the first discharge unit 300 . Although the structure for moving the partition 400 in the vertical direction is not particularly limited, a sliding line may be formed on the inner space of the drying unit 200 and the surface in contact with the partition 400, 400 may be installed so as to be movable in the vertical direction by applying a driving force from a motor or the like provided on the upper part of the drying unit 200 by connecting the chain block.

In addition, the partition 400 may be installed to be rotatable about an axis extending in the vertical direction. That is, when the partition 400 is positioned at the lower end of the inner space of the drying unit 200, the partition 400 includes a first space 250a, a second space 250b, The first space 250a, the second space 250b and the third space 250c are divided into a third space 250c by the rotation of the partition wall portion 400, So that both side surfaces are communicated as shown in Fig. 3 (b). The rotation of the partition 400 may be performed not only when the partition 400 is located at the lower end of the inner space of the drying unit 200 but also when the partition 400 moves upward or after the movement . The structure for rotating the partition 400 about an axis extending in the up and down direction is also not particularly limited, but a rotary shaft extending in the vertical direction is provided on the partition wall 400, It is rotatable by applying a driving force by a motor or the like provided on the upper part.

As shown in the figure, when the inner space of the drying unit 200 is divided into the first space 250a, the second space 250b and the third space 250c, the first space 250a and the second space 250c, The partition part 400 partitioning the space 250b may be movable in the vertical direction and the partition part 400 partitioning the second space 250b and the third space 250c may extend in the vertical direction It can be installed rotatably about the axis. The partition wall 400 separating the first space 250a and the second space 250b and the partition wall 400 partitioning the second space 250b and the third space 250c are all vertically It is also possible to arrange so as to be able to move and rotate. The process of drying and discharging coal according to the movement and rotation of the partition wall portion 400 in the vertical direction will be described later.

The raw material drying apparatus according to the embodiment of the present invention may further include a second discharge unit 500 connected to the drying unit 200 at a lower portion of the first discharge unit 300. The first discharge unit 300 discharges the dried coal, that is, the fluidized bed, to the outside, and the second discharge unit 500 discharges the dried coal to the outside of the inner space of the drying unit 200 That is, the fixed bed, to the outside. Here, the fixed layer does not flow at all over the dispersion plate 230 but refers to coal that is relatively large in size and can not flow smoothly due to the gas introduced from the dispersion plate 230.

The second discharge portion 500 may be connected to the drying portion 200 at a lower portion of the first discharge portion 300. In this case, the lower portion of the first discharge portion 300 may be connected to the first discharge portion 300 in a vertical direction The first discharging unit 300 is connected to the drying unit 200 at a lower position than the first discharging unit 300. The second discharge portion 500 is connected to the drying portion 200 at a position as close as possible to the dispersion plate 230 on the side of the dispersion plate 230 in order to easily discharge the fixing layer fixed on the upper portion of the dispersion plate 230 . The second discharge part 500 may be connected to a discharge valve 510 which can be opened or closed to prevent the coal being dried by the gas introduced from the dispersion plate 230 from being discharged to the outside. The second discharge part 500 may be closed when the fluidized bed is discharged by the discharge valve 510, and the second discharge part 500 may be opened when the fixed bed is discharged.

The structure of the second discharge part 500 is similar to that of the first discharge part 300, and the coal discharged from the second discharge part 500 is stored in a reservoir (not shown) Can be supplied to a transfer device (not shown). At this time, the coal discharged from the first discharge unit 300 and the coal discharged from the second discharge unit 500 may be separately stored or transported, but they may be supplied to the same storage or transfer apparatus, It is also possible to constitute them separately.

The raw material drying apparatus according to an embodiment of the present invention may further include a gas supply unit 600 installed at a lower portion of the dispersion plate 230 to supply a gas. The gas supply unit 600 supplies gas to the internal spaces of the drying unit 200, that is, the first space 250a, the second space 250b, and the third space 250c. The supplied gas may be a hot air having a temperature higher than that of coal supplied to the drying unit 200. The gas supplying unit 600 may supply a high temperature exhaust gas generated in various operations to the first space 250a, And the third space 250c.

The upper portion of the drying unit 200, that is, the upper portion of the first space 250a, the second space 250b, and the third space 250c includes a cyclone 700 for collecting the fine particles generated in the coal drying process Can be installed. The fine particles collected in the cyclone 700 are supplied to a separate processing device for processing the same, for example, a molding machine, and the exhaust gas from which the fine particles have been removed can be introduced into the bag filter. The bag filter collects and removes foreign matter such as dust from the flue gas introduced from the cyclone 700, and the flue gas from which the foreign matter is removed can be discharged to the outside. It goes without saying that the gas supply unit 600 may be connected to the cyclone 700 and the bag filter to supply the gas.

The gas supplier 600 can supply the gas with different pressures to the first space 250a, the second space 250b and the third space 250c in which the inner space of the drying unit 200 is partitioned. That is, a first plenum portion 610a communicating with the dispersion plate 230 is provided in a lower portion of the first space 250a, and a second plenum portion 610a communicating with the dispersion plate 230 is provided in a lower portion of the second space 250b. And a third plenum section 610c communicating with the dispersion plate 230 is installed at a lower portion of the third space 250c so that the pressure of the gas flowing into each plenum section is regulated by the pressure regulating valve 610b, (620a, 620b, 620c).

The inner space of the drying unit 200 may be divided into a plurality of spaces partitioned by the partition unit 400, and gas may be supplied at different pressures. That is, the first space 250a and the second space 250b may be a drying space for drying coal, and the third space 250c may be a classification space for classifying coal. In this case, a strong hot air, that is, a gas having a pressure of 600 mmAQ or more may be supplied to the first space 250a, and a gas having a pressure of usually 300 to 400 mmAQ may be supplied to the second space 250b . The second space 250b is supplied with a lower pressure gas than the first space 250a so that the two stages can be dried in accordance with the lateral movement of the coal introduced into the drying unit 200, Can be improved.

Further, a gas having a weak hot air, that is, a pressure of 50 to 200 mm AQ is supplied to the third space 250c to control the degree of classification of coal discharged after drying. That is, when the pressure of the gas supplied to the third space 250c as the classifying space is high, the amount of the fine particles collected in the cyclone 700 increases and the coal having a relatively large particle diameter can also flow, The particle diameter of the coal discharged to the reactor 300 increases. On the other hand, when the pressure of the gas supplied to the third space 250c is high, the amount of the fine particles collected in the cyclone 700 decreases, and only coal having a relatively small particle size flows and is discharged to the first discharge portion 300 The particle size of the coal is reduced. Accordingly, the pressure of the gas supplied to the third space 250c can be controlled to control the discharge amount of the fine powder, and the degree of classification of the coal discharged to the first discharge unit 300 can be controlled.

FIG. 4 shows a raw material supply apparatus according to a modification of the present invention.

Referring to FIG. 4, the dispersion plate 230 may be formed to be inclined downward toward the moving direction of the raw material forming the fixed layer, that is, toward the second discharge portion 500. When the dispersion plate 230 is configured to be inclined downward toward the second discharge unit 500, the coal forming the fixing layer on the dispersion plate 230 can move toward the second discharge unit 500 due to its own weight. That is, the drying unit 200, which is divided into the first space 250a, the second space 250b, and the third space 250c as the partition wall unit 400 moves upward to discharge the coal forming the fixed layer, The coal that forms the fixed layer through the communicated lower portion moves to the second discharge portion 500 side due to its own weight, so that the coal that forms the fixed layer on the top of the dispersion plate 230 is effectively discharged to the second discharge portion To the part 500 side.

In this case, a vibration unit for applying vibration to the dispersion plate 230 may be further provided. The vibrating part may be composed of a vibrator including a vibrating motor, and may apply a vibration in the vertical direction to the dispersion plate 230. [ The vibration unit may vibrate the entire drying unit 200 including the wall body 210 and the dispersion plate 230, but it is preferable that only the dispersion plate 230 is vibrated independently. To this end, the dispersion plate 230 may be installed on the bottom of the drying unit 200 so as to be movable independently of the wall 210.

When the dispersion plate 230 is inclined downward toward the second discharge unit 500 and vibrations are applied to the dispersion plate 230, the coal that forms the fixed layer through the lower part of the inner space of the communicating drying unit 200 Can be moved toward the second discharge unit 500 more effectively by its own weight. That is, the coal that forms the fixed layer due to its own weight can be moved more efficiently while keeping the inclination angle of the dispersion plate 230 small. In this case, the inclination angle of the dispersion plate 230 may be inclined downwardly by 2 to 5 degrees toward the second discharge portion 500 side.

Hereinafter, a raw material drying method according to an embodiment of the present invention will be described in detail.

A method of drying a raw material according to an embodiment of the present invention includes the steps of lowering the partition wall part 400 and dividing an internal space of the drying part 200 into a plurality of spaces communicating with the upper part along the lateral direction; Feeding the raw material to the drying unit 200; Supplying the gas to the inner space of the drying unit 200 and moving the charged material along the communicated upper portion of the inner space to dry; And discharging the dried raw material to the first discharging unit 300. Here, if the gas is not smoothly introduced into the internal space of the drying unit 200 or the amount of coal dried by the first discharge unit 300 is reduced, a fixing layer is formed on the dispersion plate 230 It can be seen that clogging of the through-hole 235 occurs due to accumulation of coal. In this case, the method of drying a raw material according to an embodiment of the present invention includes the steps of raising the partition 400 to divide the internal space of the drying unit 200 into a plurality of spaces communicating with the lower portion along the lateral direction; Moving the raw material located in the lower portion of the internal space along the communicated lower portion of the internal space; And discharging the moved raw material to the second discharging unit 500. The second discharging unit 500 discharges the coal forming the fixing layer.

First, to dry the raw material, that is, coal, a partition wall portion (not shown) for partitioning the internal space of the drying portion 200 into a first space 250a, a second space 250b, and a third space 250c along the lateral direction 400 are lowered to divide the inner space of the drying unit 200 into a plurality of spaces communicating with the upper portion along the lateral direction.

Then, a gas, that is, hot air is supplied from the gas supply unit 600 to the inner space of the drying unit 200 from the lower part through the dispersion plate 230 to raise the temperature to an atmosphere where the coal can be dried. The gas supplied to the inner space of the drying unit 200 is supplied with a mixed gas composed of coke oven gas (COG) and blast furnace gas (BFG) to the combustion chamber of the coke oven, And may be a coke oven gas, that is, an exhaust gas generated while being burned. The flue gas discharged from the coke oven is approximately 200 ° C and contains a small amount of dust, which is sufficiently usable as a hot air for drying coal.

In addition, the supply of the gas may be performed at different pressures with respect to the first space 250a, the second space 250b, and the third space 250c in which the inner space of the drying unit 200 is partitioned. That is, a strong hot air is supplied through the first plenum portion 610a communicated with the dispersion plate 230 under the first space 250a, and a strong hot air is supplied through the second space 250b, which communicates with the dispersion plate 230 under the second space 250b. The second hot air can be supplied through the second planet portion 610b through the second planet portion 610b and the third planet portion 610c communicated with the minute plate below the third space 250c. As a result, the first space 250a and the second space 250b can be configured as two-stage drying spaces along the lateral direction to improve the drying efficiency, and the third space 250c can be made of coal And a classifying space for adjusting the degree of classification of the sample.

When the internal temperature of the first space 250a is raised to about 180 ° C or more, the internal space of the first space 250a is dried through the raw material supply unit 100 The coal is supplied to the internal space of the unit 200, that is, the first space 250a at a constant speed. At this time, the coal supplied to the first dryer 330a may contain about 8.5 to 10% of water, but it may be supplied with coal containing 13% or more of water depending on season or origin. Coals containing such a large amount of water are aggregated on the dispersing plate 230, so that drying can not be performed smoothly, and a fixed layer is formed.

The coal supplied to the first space 250a is fluidized and heated at the upper part of the dispersion plate 230 by the gas introduced through the dispersion plate 230, and dried. The coal in the first space 250a accumulates and increases in height as the process progresses and the coal accumulated in the first space 250a separates the first space 250a and the second space 250b, And reaches the top of the dispersion plate 230 of the second space 250b.

The coal introduced into the second space 250b also accumulates and increases in height as the process proceeds. When the height accumulated in the second space 250b reaches the height of the partition wall portion 400 separating the second space 250b and the third space 250c, As shown in FIG. In this case, as described above, the pressure of the gas supplied to the first space 250a is maintained higher than the pressure of the gas supplied to the second space 250b, so that the coal is firstly rapidly dried by the high pressure gas, It is possible to improve the drying efficiency by drying the coal evenly by the gas.

The coal introduced into the third space 250c also accumulates and increases in height as the process proceeds. When the height accumulated in the third space 250c reaches the height of the first discharge unit 300 connected to the drying unit 200, the coal dried through the first discharge unit 300 is discharged to the reservoir or transfer device . The amount of the fine particles collected in the cyclone 700 and the degree of classification of coal discharged to the first discharge unit 300 can be adjusted by adjusting the pressure of the gas supplied to the third space 250c. same.

Here, the discharge amount of the raw material discharged to the first discharge unit 300 can be adjusted by rotating the partition 400 about the axis extending in the vertical direction. That is, the inner space of the drying unit 200, that is, the first space 250a and the second space 250b, or the side surfaces of the second space 250b and the third space 250c, The first space 250a and the second space 250b may be separated from each other when the partition wall portion 400 rotates 90 degrees about the axis extending in the vertical direction, Or the second space 250b and the third space 250c communicate with each other in a state in which the side surfaces are entirely opened. Accordingly, the communication area of each space can be adjusted by rotating the partition part 400 partitioning the internal space to increase the discharge amount of the raw material discharged to the first discharge part 300 by a predetermined angle, The discharge amount of the raw material discharged to the discharge portion 300 can be adjusted.

As described above, the entire process of fluidizing and drying coal is performed by lowering the partition 400 such that the inner space of the drying unit 200 is divided into a plurality of spaces communicating with the upper portion along the lateral direction. However, when the coal supplied to the inner space of the dryer by the gas supplied through the dispersion plate 230 does not flow smoothly, that is, when the coal that has been introduced does not form a fluidized bed and forms a fixed bed on the dispersion plate 230 , And coal having a relatively large diameter forming a fixed bed is difficult to be discharged to the outside through the first discharge portion 300.

Accordingly, in the present invention, the coal that forms the fixing layer on the dispersion plate 230, that is, coal having a relatively large particle diameter is discharged to the second discharge portion 500 to suppress clogging of the dispersion plate 230, Can be improved.

When the amount of coal forming the fixing layer on the dispersion plate 230 is accumulated and the gas is not supplied smoothly or the amount of coal discharged to the first discharge portion 300 is reduced or decreased, The partitioning part 400 dividing the inner space of the drying part 200 into the first space 250a, the second space 250b and the third space 250c along the lateral direction is lifted, And divides the internal space of the main body 200 into a plurality of spaces communicating with each other along the lateral direction. In this case, it is needless to say that the inner space of the drying unit 200 may be connected to the lower part or the upper part and the lower part depending on the height of the partition part 400.

When the inner space of the drying part 200 is divided into a plurality of spaces through which the lower part communicates by the rise of the partition part 400, the communicating lower part forms a moving path of the coal forming the fixed layer on the dispersion plate 230 do. Therefore, coal, which forms the fixing layer, can be moved by the coal injection into the raw material supply portion 100 and the coal discharge into the second discharge portion 500, and the discharge valve 510 connected to the second discharge portion 500 And the coal that forms the fixed layer is discharged.

Also, the partition wall portion 400 may be rotated about an axis extending in the vertical direction to open the lower side surface of the inner space, not only in a state where the partition wall portion 400 is raised but also in a lowered state. In this case, the opened lower side of the inner space not only forms a movement path of coal forming the fixing layer on the dispersion plate 230, but also induces the movement of coal forming the fixing layer by the rotational force of the partition part 400 It is possible. That is, the discharge of the raw material discharged to the first discharge part 300 and the coal forming the fixed layer can be discharged by the state in which the partition wall part 400 is rotated around the axis extending in the vertical direction, The coal that forms the fixed layer can be moved by the operation of rotating the unit 400 about the axis extending in the up and down direction, so that the discharge to the second discharge unit 500 can be more easily induced.

While the preferred embodiments of the present invention have been described and illustrated above using specific terms, such terms are used only for the purpose of clarifying the invention, and the embodiments of the present invention and the described terminology are intended to be illustrative, It will be obvious that various changes and modifications can be made without departing from the spirit and scope of the invention. Such modified embodiments should not be individually understood from the spirit and scope of the present invention, but should be regarded as being within the scope of the claims of the present invention.

100: raw material supply part 200: drying part
210: wall 230:
235: through-hole 300: first outlet
400: partition wall part 500: second discharge part
510: exhaust valve 600: gas supply section
700: Cyclone

Claims (16)

A drying unit having an internal space for drying the material to be introduced laterally; And
And at least one partition part dividing an internal space of the drying part into a plurality of spaces communicating along a lateral direction,
The partition wall portion is provided so as to be movable in the vertical direction,
Wherein the partition wall portion is rotatably installed around an axis extending in a vertical direction.
The method according to claim 1,
A raw material supply unit connected to one side of the drying unit to supply the raw material; And
And a discharge unit connected to the other side of the drying unit to discharge the dried raw material to the outside.
The method of claim 2,
Wherein the discharge portion includes a first discharge portion and a second discharge portion,
And the second discharge portion is connected to the drying portion at a lower portion of the first discharge portion.
The method according to claim 1,
Wherein the drying unit includes a dispersion plate provided on a bottom surface and having a plurality of through holes.
The method of claim 4,
Wherein the dispersing plate is formed so as to be inclined downward along the moving direction of the raw material.
The method of claim 4,
And a vibration unit for applying vibration to the dispersion plate.
The method according to claim 1,
Wherein the partition wall partitions the internal space of the drying part into a plurality of spaces communicating at least one of the upper part and the lower part.
delete The method of claim 4,
And a gas supply unit installed at a lower portion of the dispersion plate to supply gas to the inner space.
The method of claim 9,
Wherein the gas supply unit supplies gas at different pressures to the plurality of spaces.
Lowering the partition wall part and dividing the internal space of the drying part into a plurality of spaces communicating with the upper part along the lateral direction;
Feeding the raw material to the drying unit;
Supplying a gas into the internal space of the drying unit, moving the charged raw material along a communicated upper portion of the internal space and drying the raw material; And
And discharging the dried raw material to a first discharge unit,
The process of discharging the dried raw material to the first discharge unit includes:
And the discharge amount of the raw material discharged to the first discharge unit is controlled by rotating the partition wall at a predetermined angle.
delete The method of claim 11,
The process of discharging the dried raw material to the first discharge unit includes:
Wherein the degree of classification of the raw material is controlled by controlling a pressure of a gas supplied to a space adjacent to the first discharge portion among the plurality of spaces.
Lowering the partition wall part and dividing the internal space of the drying part into a plurality of spaces communicating with the upper part along the lateral direction;
Feeding the raw material to the drying unit;
Supplying a gas into the internal space of the drying unit, moving the charged raw material along a communicated upper portion of the internal space and drying the raw material;
Discharging the dried raw material to the first discharge unit;
Raising the partition wall portion to divide an internal space of the drying portion into a plurality of spaces communicating with the lower portion along the lateral direction;
Moving the raw material located in the lower portion of the internal space along the communicated lower portion of the internal space; And
And discharging the moved raw material to a second discharge unit.
15. The method of claim 14,
The process of moving along the communicated lower portion of the inner space comprises:
And the fuel located below the inner space is moved by its own weight on a dispersing plate disposed so as to be inclined downward toward the second discharging portion.
15. The method of claim 14,
The process of moving along the communicated lower portion of the inner space comprises:
And moving the fuel located at a lower portion of the inner space to the second discharge portion.

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