KR101513091B1 - Apparatus for Alignment and Flattening for Even Drying of Transportation Coal in System for Drying Coal - Google Patents

Abstract

In the present invention, provided is a transferred coal arranging and flattening device in a coal dryer, which efficiently dries coals and accordingly maintains proper moisture content, thereby increasing calorific value of coals and combustion efficiency in thermoelectric power plant and leading to the reduction of fuel consumption where the device is used for uniformly drying transferred coals in a coal dryer comprising a first coal dryer which is made by which a pair of driving sprockets and a pair of vertical motion sprockets are installed at a different position and are connected to a first chain respectively and has a second exhaust gas chamber installed on the lower side of the first chain to capture exhaust gas.

Description

FIELD OF THE INVENTION The present invention relates to an apparatus and method for aligning and flattening coal,

The present invention relates to a device for aligning and planarizing coal for the uniform drying of coal transferred from a coal dryer, and more particularly, to a multi-stage dryer for drying coal using reheated steam, The present invention relates to a sorting and planarizing apparatus for uniformly drying transfer coal for improving the drying efficiency by aligning and planarizing a coal pile to be fed so that reheated steam is uniformly injected into the piles of coal fed into the dryer of the dryer.

Generally, a coal-fired thermal power plant burns approximately 180 tons / hr of coal per 500 MW, and supplies approximately 37 tons of coal to the boiler per diffuser. A 500 MW coal-fired thermal power plant will have approximately six 500-ton capacity coal reservoirs, five of which will be supplied with normal coal, and the other will have a reserve coal reserve It is operated with low-fidelity.

Moreover, in the coal-fired thermal power plant, the standard thermal power design standard for coal is 6,080 Kcal / Kg, designed to use low-moisture bituminous coal of less than 10%. Some coal-fired power plants use imported coal, some of which have an average moisture content of at least 17%, which reduces the combustion efficiency of the boiler. If the calorific value of the coal used as the standard thermal power combustion limit is 5,400 Kcal / Kg is low, it is expected that the power generation will decrease and the fuel consumption will increase due to the decrease of combustion efficiency. In addition, when the coarse coal with a low calorific value of high water content is used, the water content is higher than the design standard and the conveying system for conveying the coal is not smooth, and when the coal is pulverized by the differentiator, the efficiency is lowered, , It may happen that the heat distribution generated in the boiler is operated with drift and abnormal condition. However, in order to reduce fuel costs in thermal power plants, the proportion of sub-bituminous coal is gradually increasing to about 41 ~ 60%.

In addition, with the expectation of the global economic recovery and the destruction of nuclear power plants due to the Japanese earthquake, the demand for coal-fired power plants is expected to rise steadily as the demand for thermal power plants increases. The global coal market is changing from the consumer to the supplier, and it is difficult to supply and supply stable coal. Production of high calorific coal is expected to remain at the current level, which is unbalanced supply and demand.

Among the total coal reserves of the world coal, the low calorific value is about 47%, but the calorific value is low and the water content is high, so the low calorific value burning of high water such as combustion trouble at the time of combustion is difficult to completely ignite in the market. Until now, there has been a high tendency to rely on stable oil prices and low production costs of nuclear power generation worldwide, but there are many plans for the construction of coal-fired thermal power plants due to the rapid rise in oil prices and anxiety about nuclear power generation .

Conventionally, the technique of drying coal (thermal drying) is a rotary drying method in which coal particles in the inside are dried with a high temperature gas while rotating a shell of a cylinder into which coal is charged, and a rotary drying method in which coal is dried from a high temperature (Flash, Pneumatic) drying method in which the gas is raised from the bottom to the top, and a fluid-bed drying method in which the high-temperature drying gas rises to the top with fine particles to dry the coal.

Coal is divided into surface moisture attached to the pores between the coal particles and bonded water which is bound to the pores inside the coal. The surface moisture occupies most of the water sprayed during the washing process, transportation and storage in the mountain, and its amount is determined by the surface area and the water absorption. The smaller the particle size, the larger the surface area and the capillary between particles and particles is formed. And the water content becomes larger. The combined moisture is formed in coal-fired generators, which are lignite, bituminous coal (bituminous coal, bituminous coal), and anthracite. If the coal has a lot of water, the calorific value is lowered and the transportation cost is increased, so it is necessary to control the water in the process of mixing, grinding and separating the coal.

Furthermore, since the pulverized coal is conveyed through a multi-stage dryer, that is, a conveyor having a plurality of through-holes formed therein for passing the reheat steam, or coal conveyed through a plurality of conveying plates while spraying high- There is a problem in that the water contained in the coal can not be effectively dried even if the reheated steam is sprayed in a state where it is not evenly dispersed. As a result, the number and length of the dryer for drying the coal have to be increased, and the amount of the reheated steam for drying has been increased, thereby increasing the cost and time for drying the coal.

As a prior art related to the present invention, Patent Document 1 discloses a method for improving the drying efficiency of a primary coal, which is primarily dried in a low-grade coal stabilizer, by using a wave-type vibration for uniform mixing with a heavy oil powder And a flow plate is provided. The vibration plate allows the low-grade coal and the heavy oil powder to be mixed evenly. The drying steam for drying the coal can not be uniformly sprayed on the surface of the coal, thereby reducing the drying efficiency.

Korean Patent Registration No. 10-0960793 (Jun. 3, 2010, Announcement, High-grade method and apparatus for lower coal)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a coal drying apparatus for drying a coal used as a fuel for a thermal power plant by a reheat steam while transferring coal to a dryer, The objective is to effectively dry the coal by reheating steam injected into the coal by allowing the densities to be uniformly distributed and evenly distributed so that the piles of coal do not accumulate in one place while passing through the reactor.

Another object of the present invention is to improve the combustion efficiency of a thermal power plant boiler by increasing the heating value of coal by making it possible to maintain an appropriate moisture content of coal by effectively drying coal, thereby reducing fuel consumption.

It is another object of the present invention to provide a drying technology and a technology applicable to a thermal power plant that can prevent environmental problems due to incomplete combustion of coal by controlling moisture contained in coal.

In order to achieve the above object, the present invention is characterized in that a pair of first driving sprockets and a pair of first driven sprockets are separated from each other by a predetermined distance and are respectively fastened to first chains, A pair of first guide rails horizontally supporting the first conveying plate are provided below the upper first chain connected between the first driving sprocket and the first driven sprocket, A pair of second guide rails for horizontally supporting the first conveying plate are provided below the lower first chain connected between the first driven sprockets and a pair of first guide rails for horizontally supporting the first conveying plate, A second steam chamber for spraying reheat steam supplied from a reheater is installed under the lower first chain, and a first exhaust gas chamber for collecting exhaust gas is installed on the upper first chain, And, a first and a second coal drier off-gas chamber for collecting exhaust gas on the lower side chain installed first; And a pair of second drive sprockets and a pair of second driven sprockets are separated from each other by a predetermined distance and connected to second chains, a plurality of second transfer plates are hingedly coupled between the second chains, A pair of third guide rails horizontally supporting the second transfer plate are provided below the upper second chain connected between the drive sprocket and the second driven sprocket, A pair of fourth guide rails for horizontally supporting the second transfer plate are provided under the chain, a third vapor chamber for spraying the reheated steam supplied from the reheater is installed below the upper second chain, A third exhaust chamber for collecting exhaust gas is provided on the upper second chain, and a third exhaust chamber for collecting the exhaust gas is installed on the upper second chain, And a second coal dryer installed with a fourth flue gas chamber for collecting coal, wherein the first coal dryer in the first coal dryer is charged with a second coal dryer to perform a secondary drying, A first through hole formed at a predetermined interval in the longitudinal direction and a plurality of lengths in the vertical direction and a first through hole joined to the upturned end of the upturn plate and descending at a predetermined angle toward the rear, And a first and a second aligner made up of a lower steel plate and a fixing member for fixedly supporting the lower plate and the joined up plate, a columnar body, a protrusion formed protruding from the center of the body front side, And a first planarizer comprising a pair of fixing members fixedly supporting the stage, wherein a first planarizer is provided between the first aligner and the second aligner, And a second planarizer is provided behind the second aligner, wherein the first aligner, the first planarizer, the second aligner, and the second planarizer are disposed at a predetermined height from the first conveying plate surface, Wherein the first sorting device and the second sorting device are arranged to horizontally distribute the density of the coal piles transferred from the surface facing the upper side of the first transfer plate and align them so as to be evenly distributed, The planarizer and the second planarizer planarize the coal pile that has passed through the aligner, and the coal pile is planarized at a constant height difference through the first aligner, the first planarizer, the second aligner, and the second planarizer In which the load of the pile of coal to be conveyed is reduced and the reheated steam which is injected through the first conveyance plate is uniformly brought into contact with the surface of the coal particles The present invention provides a sorting and leveling device for even drying of the transferred coal.

Also, in the present invention, the first and second aligners and the first and second planarizers may be respectively installed in the first or second exhaust gas chamber, the second exhaust gas chamber, the third exhaust gas chamber, and the fourth exhaust gas chamber, respectively.

Further, in the present invention, a brush having a plurality of concavities and convexities vertically downwardly formed on a bottom surface to which the rising plate and the falling plate of the aligner are joined may be provided.

Further, in the present invention, a plurality of second through holes may be formed in the lower steel plate at a predetermined interval and width in the transverse direction.

Further, in the present invention, a flat member having elasticity may be coupled to the lower plate longitudinal section.

In the present invention, each of the first planarizer and the second planarizer may have a corner portion protruding forwardly from the bottom edge of the projecting portion, a blade portion protruding from both sides of the edge portion of the projecting portion, And a dispersion projection having a slope of a predetermined slope that widens from the lower portion toward the lower portion.

According to the present invention, an alignment and leveling apparatus for even drying of conveyed coal in a coal drying apparatus includes a plurality of conveying plates for conveying coal, a plurality of conveying plates for conveying coal, By re-heating steam, it is possible to easily remove high-temperature reheated steam from the coal particles by dispersing, equalizing, and leveling the density of the coal pile transferred to effectively remove the moisture contained in the coal, It is possible to prevent the incomplete combustion of coal by removing moisture remaining in the coal, to improve the coal heat quantity, to minimize the emission of pollutants, to reduce the spontaneous ignition rate due to the decrease of water content of the coal, The stability of the coal supply can be improved. In addition, it is possible to use low-calorific charcoal, which is cheaper in price than high-calorie coal, reduce fuel cost and cost due to reduction of coal import quantity, and reduce coal consumption relatively, thereby reducing waste and pollutant discharge And carbon dioxide can be reduced, and the effect of substitution of foreign technology and overseas export of facilities can be expected.

1 is a block diagram showing a coal drying apparatus according to the present invention.
2 is a view showing the front view of the coal drying apparatus according to the present invention.
3 is a schematic view showing a side view of a coal drying apparatus according to the present invention.
FIG. 4 and FIG. 5 are perspective views showing a main portion in which a planarizer and a multi-stage aligner for even drying coal conveyed in the coal drying apparatus according to the present invention are installed.
6 is a perspective view showing an embodiment of the aligner in the coal drying apparatus according to the present invention.
7 is a perspective view showing another embodiment of the aligner in the coal drying apparatus according to the present invention.
8 is a perspective view showing an embodiment of the planarizer in the coal drying apparatus according to the present invention.
9 is a perspective view showing another embodiment of the planarizer in the coal drying apparatus according to the present invention.
10 is a side view showing the operation of the alignment and planarization apparatus for even drying of the transfer coal in the coal drying apparatus according to the present invention.
11 is a front view showing the operation of the alignment and planarization apparatus for even drying of the transfer coal in the coal drying apparatus according to the present invention.
12 is a plan view showing the operation of the aligning and planarizing apparatus for even drying of the transfer coal in the coal drying apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an aligning and planarizing apparatus for uniformly drying transfer coal in a coal drying apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention is intended to uniformly disperse and equalize the load and density of coal charged into the conveying apparatus when the coal is conveyed and conveyed by using a conveying device such as a conveyor or a conveying plate to enhance the drying effect. In addition, the conveying planarizer is installed in a coal drying apparatus for drying coal by injecting high temperature reheating steam while coal is fed into a conveying device of a coal drying device in a coal quantity feeder for feeding a predetermined amount of pulverized coal .

In FIG. 1, the low-lean burn 200 is a place for storing and storing coal for use as a boiler fuel for a thermal power plant. Coal contains surface moisture and internal moisture. Furthermore, the coal stored in the low-leaner (200) is sprayed with water periodically to prevent scattering of coal dust. The coal stored in the low-carbon plant 200 is transferred to the coal drying apparatus 100 through a conveying system or the like. At this time, coal of low-leaner (200) whose moisture has not been removed may be transferred to a drying coal supply tank (300) connected to the coal drying apparatus. The coal stored in the coal supply tank 300 is supplied to the coal drying apparatus 100 by a predetermined amount in the coal quantity feeder 400. The coal drying apparatus 100 includes a first coal dryer 110 and a third coal dryer 170 for naturally drying coal discharged through the second coal dryer 140. The first coal dryer 110 and the second coal dryer 140 have substantially the same structure. The naturally dried coal passing through the third coal dryer (170) is stored in the dry coal storage tank (600) and supplied to the boiler fuel of the thermal power plant (700).

2 and 4 show an example of a coal drying apparatus 100 equipped with a plurality of dispersion planarizers 10 and 20 and a planarizer 30 according to the present invention. The coal drying apparatus 100 includes a coal loader 400 and a coal dryer 140. The coal dryer 100 includes a multi-stage dryer such as a first coal dryer 110, a second coal dryer 140 for secondarily drying coal dried in the first coal dryer, And a third coal dryer 170 for naturally drying the coal dried in the second coal dryer and supplying the dried coal to the dry coal storage tank 600.

The first coal dryer 110 includes a pair of first drive sprockets 111 and a pair of first driven sprockets 112 spaced apart from each other by a predetermined distance and fastened to the first chains 113, A first conveying plate 114 is hingedly coupled between the first drive sprocket 111 and the first driven sprocket 112 and a first conveying plate 114 is hingedly coupled between the first driven sprocket 111 and the first driven sprocket 112, A pair of first guide rails 115 for horizontally supporting the plate 114 and a lower first chain 113b connected between the first drive sprocket 111 and the first driven sprocket 112 A pair of second guide rails 116 for horizontally supporting the first transfer plate 114 are installed and a first steam for spraying the reheated steam supplied from the reheater 500 below the upper first chain 113a, A chamber 120 is provided and a second vapor chamber 123 for spraying the reheated steam supplied from the reheater 500 is installed below the lower first chain 113b, The first off-gas chamber 124 for collecting the exhaust gas over the upper first chain (113a) is provided, and a second off-gas chamber 126 for collecting the exhaust gas over the lower first chain 113 is installed.

The second coal dryer 140 includes a pair of second drive sprockets 141 and a pair of second driven sprockets 142 spaced apart from each other by a predetermined distance and connected to the second chains 143, A plurality of second transfer plates 144 are hingedly coupled between the chains 143 and an upper second chain 143a connected between the second drive sprocket 141 and the second driven sprocket 142, A pair of third guide rails 145 for horizontally supporting the transfer plate 144 are provided and under the lower second chain 143b connected between the second drive sprocket 141 and the second driven sprocket 142, A pair of fourth guide rails 146 for horizontally supporting the second transfer plate 144 are provided and a third guide rail 146 for spraying the reheat steam supplied from the reheater 500 below the upper second chain 143a is provided, A steam chamber 150 is installed and a fourth steam chamber 153 for spraying the reheated steam supplied from the reheater 500 is installed below the lower second chain 143b It said third off-gas chamber 154 for collecting the exhaust gas over the upper second chain (143a) are installed, a fourth off-gas chamber 156 for collecting the exhaust gas over the lower second chain (143b) are provided.

The first transfer plate 114 is provided with a plurality of through holes 114a so that the reheated steam injected from the first and second vapor chambers 120 and 123 passes through the first transfer plate 114 and comes into contact with the coal particles. Is formed. Guard 114b of a predetermined height is provided at left and right sides of the top surface of the first transfer plate 114 so that the charged coal pile does not flow down to the left or right of the first transfer plate 114. [ The guard 114b has a substantially trapezoidal shape and a shape with a wide upper side and a narrow lower side. Therefore, the guards 114b of the first transfer plate 114 are overlapped with the guards 114b adjacent to each other. At this time, it is preferable that the guard 114b of the first transfer plate 114 is installed in a substantially zigzag direction with the guard 114b adjacent to each other. The reheat steam injected from the first and second steam chambers 120 and 123 is supplied to the left and right sides of the bottom surface of the first transfer plate 114 in the first and second steam chambers 120 and 123 The shielding plate 114c is installed so as not to be lost.

The second transfer plate 144 is provided with a plurality of through holes 144 for allowing the reheated steam injected from the third and fourth steam chambers 150 and 153 to pass through the second transfer plate 144, 144a are formed. A guard 144b having a predetermined height is provided on the left and right sides of the upper surface of the second transfer plate 144 so as to prevent the charged coal pile from flowing down to the left or right of the second transfer plate 144. The guard 144b has a substantially trapezoidal shape and an upper light-narrow narrow shape with a narrow lower portion. Therefore, the guards 144b of the second transfer plate 144 are overlapped with the guards 144b adjacent to each other. At this time, it is preferable that the guard 144b of the second transfer plate 144 is provided in a substantially zigzag direction with the guard 144b adjacent to each other. The reheat steam injected from the third steam chamber 150 and the fourth steam chamber 153 is supplied to the left and right sides of the lower end surface of the second transfer plate 144 by the third steam chamber 150 and the fourth steam chamber 153 And the shielding plate 144c is installed so as not to be lost.

4, the dust reducer 1 is installed at the lower end of the coal quantitative feeder 400. [ The dust reducer 1 is installed at a predetermined interval from the surface of the first coal dryer 110 facing the upper side of the plurality of first transfer plates 114. Furthermore, the dust reducer 1 changes the direction of the coal supplied from the coal quantitative feeder 400 through a zigzag shape, a twisted shape, or a spiral shape, and decelerates the speed at which the coal is supplied, So that it is slowed down to the surface facing the upper side of the first transfer plate 114 to suppress dust generation.

6, the aligner 10 includes a lift plate 11 having a slope rising from a front side toward a rear side at a predetermined angle, a lower plate 12 joined to the lift plate end and having a slope lowered at a certain angle ) Are integrally combined. A plurality of first through holes (13) are formed in the rising plate (11) at regular intervals and lengths in the longitudinal direction. The aligner 1, to which the ascending plate 11 and the descending plate 12 are integrally joined, is fixedly supported by a pair of fixing members 15 at each side. One side of the fixing member 15 is coupled to the side where the lift plate 11 and the lower plate 12 are joined and the other side of the fixing member 15 is fixed to the first guide rail 115.

Furthermore, the aligner 10 is arranged to horizontally distribute the density of coal piles transferred from the surface facing the first conveying plate 114 and to perform alignment to even out the distribution. The aligner is installed at regular intervals in the first aligner (10) and the second aligner (20).

In Fig. 7, a plurality of second through holes 14 are formed in the lower plate 12 of the aligner 10 at regular intervals and widths in the transverse direction. The second through holes 14 may be formed in the vertical direction on the lower steel plate 12. Also, the first through hole 13 formed in the rising plate 11 may be formed in the transverse direction. Therefore, the through holes formed in the rising plate 11 and the downward plate 12 can be formed in both the longitudinal direction and the transverse direction, and the longitudinal direction and the transverse direction can be selectively formed.

Further, a flat member 16 having elasticity is joined to the vertical plane of the lower plate 12 of the aligner 10. The flat member 16 is made of a material having elasticity such as synthetic resin or rubber, so that the irregularly conveyed coal can be flattened.

A brush 17 having a plurality of projections and depressions formed vertically downward is provided on the bottom surface of the aligner 10 where the rising plate 11 and the lower plate 12 are joined. The brush 17 disperses the coal dirt C evenly while forming a bone and an acid on the surface of the coal dump C transferred through the lift plate 11. [

8, the planarizer 30 includes a columnar body 31, a projecting protrusion 32 protruding from the central portion of the body, and a pair of fixing members 35 for fixing both side ends of the body 31, Lt; / RTI > That is, the planarizer 30 comprises a columnar body 31. The body 31 may be formed of a polygonal or elliptic shape having a surface capable of uniformly dispersing coal on the transfer device. At the central portion of the front face of the body 31, a spiral protrusion 32 for dividing the center of the coal pile transferred through the first aligner 10 and dispersing it to the right and left is protruded. The projecting portion 32 is formed in a substantially triangular prism shape so as to form an edge having a line of intersection in front of the body 31. Therefore, when the pile of coal is brought into contact with the puddle protrusion 32, the coal particles are divided into left and right sides by the puddle protrusion 32. [ Therefore, the puddle protrusion 32 functions to disperse and flatten the central portion of the coal pile while grasping the center portion of the pile right and left.

The body 31 having the projecting protrusions 32 protruded is provided with a pair of fixing members 35 fixed to one side of the transfer device so that both side ends of the body are fixedly supported. Further, the planarizer 30 is installed at an interval above the conveying device. The planarizer 30 flattens the pile of coal conveyed from the conveying device to a predetermined height so that the reheated steam passing through the conveying device is evenly contacted to the surface of the coal particles. The planarizer is installed at the first planarizer 30 and the second planarizer 40 at regular intervals.

9, each of the first planarizer 30 and the second planarizer 40 is provided with a corner portion 51 protruding forwardly from the bottom edge of the projecting portion, and the edge portion 51 protruding from both sides of the edge of the projecting portion And a dispersion protrusion 50 having a slope of a predetermined slope that widens from the upper portion to the lower portion from the edge portion 51 to the blade portion 52 may be further formed. The dispersing projection 50 is formed with a corner portion 51 protruding forward from the bottom edge of the separating protrusion 32 and a blade portion 52 protruding from both sides of the bottom edge of the separating protrusion 32 is formed in the corner portion 51 do. A slope of a predetermined slope is formed from the corner portion 51 of the dispersing projection 50 to the blade portion 52 and widened from the upper portion to the lower portion. The dispersing protrusions 50 divide the center portion of the coal pile conveyed in the conveying device into a high density central portion across the corner portion 51. The dispersion projections 50 allow the coal piles separated at the corners 31 and the projections 32 to be scattered on both sides along the projections 32 and then descend to the front of the slopes of both sides, Is uniformly dispersed on the surface of the conveying device.

10, the first aligner 10, the first planarizer 30, the second aligner 20, and the second planarizer 40 are disposed on the surface of the first conveying plate 114 at regular intervals, With a step of a predetermined height from the front side to the rear side. The bottom surface of the first planarizer 30 is lower than the bottom surface of the first aligner 10 and the bottom surface of the second aligner 20 is lower than the first planarizer 30, The lower surface of the second planarizer 40 is installed lower.

11A and 11B and 12A and 12B, the coal pile C fed into the surface of the first conveyance plate 114 in the dust reducer 1 is conveyed in a substantially circular arc shape, And may be formed at an irregular height. Further, the density of coal pile C transferred to the center portion and the lower portion is increased by gravity. Therefore, the reheating steam injected from the bottom of the first transfer plate 114 is not uniformly injected into the coal particles in the coal pile C, so that the efficiency of the coal drying can be reduced. At this time, the coal pile C transferred from the first transfer plate 114 is horizontally separated while passing through the bottom of the elevating plate 11 of the first aligner 10. The separated coal pile (C) rises on the surface of the rising plate (11). The coal pile C which has risen to the surface of the rising plate 11 flows under the rising plate 11 through the first through hole 13 or over the rising plate 11 and is transported to the surface of the lower steel plate 12. The coal pile C descending to the surface of the lower steel plate 12 flows into the lower steel plate 12 through the second through hole 14 or passes through the lower surface of the lower steel plate 12 through the surface of the lower steel plate 12 (C) of the coal. The brush 17 disposed vertically on the bottom surface of the first aligner 10 may be evenly arranged so that the surface of the coal pile C passing through the rising plate 11 or passing through the first through hole 13 is formed with mountains and valleys Dispersed. The first sorting machine 10 can distribute or reduce the density and the volume of the coal dumps C by preventing the coal dumps C transferred from the first transfer plate 114 from passing through the first sorting machine 10, So as to be transported evenly. Accordingly, the first aligner 10 scrambles the coal dumps C to be conveyed uniformly, thereby maximizing the drying efficiency.

In addition, the first planarizer 30 further disperses and flattenes the coal pile C through the first aligner 10. At this time, the first planarizer 30 disperses and planarizes the coal pile C at a lower bottom position than the first aligner 10. Therefore, the coal pile C that has passed through the first planarizer 30 is uniformly dispersed and flattened and transported to the surface of the first transfer plate 114.

The conveyed coal pile C passed through the first planarizer 30 is horizontally separated while passing through the bottom of the rising plate 21 of the second aligner 20. The separated coal pile (C) rises on the surface of the rising plate (21). The coal pile C rising to the surface of the rising plate 21 flows under the rising plate 21 through the first through hole 23 or over the rising plate 21 and is transported to the surface of the lower plate 22. The coal pile C descending to the surface of the lower steel plate 22 flows into the lower steel plate 22 through the second through hole 24 or passes through the lower surface of the lower steel plate 22 through the surface of the lower steel plate 22 (C) of the coal. The surface of the coal pile C passing through the rising plate 21 or passing through the first through hole 23 may be evenly formed so that the brush 27 installed vertically on the bottom surface of the second aligner 20 forms a mountain and a crest Dispersed. The second sorting device 20 distributes the coal dumps C and the density of the coal dumps C by preventing the coal dumps C transferred from the first transfer plate 114 from sticking together through the second sorting device 20, So as to be transported evenly. Therefore, the second aligner 20 scrambles the coal pile C to be conveyed uniformly, thereby maximizing the drying efficiency.

Further, the second planarizer 40 further disperses and planarizes the coal pile C through the second aligner 20. At this time, the second planarizer (40) disperses and planarizes the coal pile (C) at a lower bottom position than the second aligner (20). Therefore, the coal pile C passing through the second planarizer 40 is uniformly dispersed and flattened and transported to the surface of the first transfer plate 114.

The coal pile C transferred on the surface of the first transfer plate 114 is divided into a first aligner 10, a first planarizer 30, a second aligner 20 and a second planarizer 40 The load of the coal pile (C), which is repeatedly mixed, dispersed and planarized, is deflected to one side or conveyed to an irregular height, is uniformly dispersed so as not to be deflected to either side, 1 conveying plate 114 to uniformly contact the surface of the coal particles, thereby making it possible to more effectively dry the coal.

5, the first aligner 10, the first planarizer 30, the second aligner 20, and the second planarizer 40 are installed at the front end of the second exhaust gas chamber 126, 1 from the transfer plate 114 to the surface of the lower first transfer plate 114 can be dispersed and planarized. In addition, the first aligner 10, the first planarizer 30, the second aligner 20 and the second planarizer 40 are disposed between the third exhaust gas chamber 154 and the fourth exhaust gas chamber 156 So that the coal dumps C to be conveyed can be dispersed and planarized. Further, the first aligner 10, the first planarizer 30, the second aligner 20, and the second planarizer 40 are provided with the first exhaust gas chamber 124, the second exhaust gas chamber 126, The third exhaust gas chamber 154 and the fourth exhaust gas chamber 156, respectively. Accordingly, the first aligner 10, the first planarizer 30, the second aligner 20, and the second planarizer 40 are disposed between the first exhaust gas chamber 124, the second exhaust gas chamber 126, The third exhaust gas chamber 154 and the fourth exhaust gas chamber 156 and is dispersed and flattened so as to pass through the first conveyance plate 114 and the second conveyance plate 144, The reheated steam is uniformly brought into contact with the surface of the coal particles so that the coal can be dried more effectively.

As described above, the aligning and leveling apparatus for the uniform drying of the transferred coal in the coal drying apparatus of the present invention is characterized in that a plurality of conveying plates for conveying coal are arranged at a high temperature Which is capable of removing moisture contained in coal and effectively drying it. The load of the coal pile to be conveyed is reduced, and the coal is uniformly dispersed and planarized, so that the high-temperature reheated steam can easily contact the coal particles.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who has it will know it easily.

1: dust reduction device 10, 20: aligner 11, 21: lifting plate 12, 22: descending plate 13, 14, 23, 24: through hole 15, 25, 35, 45: fixing member 16, 26: flat member 17 The present invention relates to a coal drying apparatus and a method of manufacturing the coal drying apparatus, and more particularly, to an apparatus for drying coal, And the guide rails 114a and 114a and the guide rails 114a and 114b and the guide rails 114c and 144c are provided on the guide rails 113 and 113, respectively. And the gas discharge pipe 130 is connected to the gas discharge pipe 130. The gas discharge pipe 130 is connected to the gas discharge pipe 130, And a coal supply unit for supplying the coal to the coal supply unit, wherein the coal supply unit comprises: a supply port for supplying the coal; Dry coal reservoir 700: Thermal power plant C: Coal pile

Claims (6)

A pair of first drive sprockets and a pair of first driven sprockets are spaced apart from each other by a predetermined distance and fastened to the first chains, a plurality of first transfer plates are hingedly coupled between the first chains, A pair of first guide rails for horizontally supporting the first transfer plate are provided below the upper first chain connected between the sprocket and the first driven sprocket, and a pair of first guide rails for horizontally supporting the lower first chain A pair of second guide rails horizontally supporting the first transfer plate are provided below the first transfer chamber, a first vapor chamber for spraying the reheated steam supplied from the reheater is provided below the upper first chain, A first exhaust chamber for collecting exhaust gas is provided on the upper first chain, and a second exhaust chamber for collecting the exhaust gas is installed on the lower first chain, A first coal dryer in the second off-gas chamber of the house are installed; And
A pair of second drive sprockets and a pair of second driven sprockets are spaced apart from each other by a predetermined distance and connected to the second chains, a plurality of second transfer plates are hingedly coupled between the second chains, A pair of third guide rails horizontally supporting the second transfer plate are provided below the upper second chain connected between the sprocket and the second driven sprocket and the lower second chain connected between the second drive sprocket and the second driven sprocket A pair of fourth guide rails for horizontally supporting the second conveying plate are provided below and a third steam chamber for injecting the reheated steam supplied from the reheater is provided below the upper second chain, A third exhaust chamber for collecting exhaust gas is provided on the upper second chain, and a third exhaust chamber for collecting the exhaust gas is provided on the upper second chain. A fourth and a second coal dryer in the exhaust gas chamber, which is installed,
Wherein the first coal dryer in the first coal dryer is charged with a second coal dryer to be secondarily dried,
A lift plate having a slope rising from a front side to a rear side at a predetermined angle; a first through hole formed in the lift plate at a predetermined interval and a plurality of lengths in the vertical direction; And a first and a second aligner consisting of a fixing member for fixing and supporting the bonded elevation plate and the lower steel plate,
A first and a second planarizer including a columnar body, a projecting protrusion protruding from the central portion of the body, and a pair of fixing members for fixing both side ends of the body,
A first planarizer is disposed between the first aligner and the second aligner, and a second planarizer is disposed behind the second aligner, wherein a first aligner, a first planarizer, a second aligner, Wherein the first and second conveying plates are provided with a lower step from the front to the rear with a step of a predetermined height from the surface of the first conveying plate,
The first aligner and the second aligner are arranged to horizontally distribute the density of the coal piles transferred on the surface facing the upper side of the first transfer plate and to align them uniformly with the uniform distribution, and the first planarizer and the second planarizer And the coal pile is flattened at a predetermined height difference through the first aligner, the first planarizer, the second aligner, and the second planarizer to reduce the load of the coal pile being conveyed And the reheating steam passing through the first transfer plate is evenly brought into contact with the surface of the coal particles.
2. The apparatus according to claim 1, wherein the first and second aligners and the first and second planarizers are disposed in a first drying chamber, a second drying chamber, a third drying chamber and a fourth drying chamber, respectively, Alignment and leveling device for even drying of transported coal.
The apparatus of claim 1, further comprising a brush having a plurality of projections and depressions formed vertically downwardly on a bottom surface of the elevator plate of the aligner.
The apparatus of claim 1, wherein a plurality of second through holes are formed in the lower steel plate at regular intervals and widths in the transverse direction.
The apparatus of claim 1, further comprising a flat member having elasticity on the lower plate longitudinal section for aligning and planarizing the conveyed coal in the coal drying apparatus.
The flattening machine according to claim 1 or 2, wherein the first planarizer and the second planarizer have corner portions protruding forward from the edge of the bottom of the projecting portion, and a blade portion protruding from both sides of the edge of the bottom portion of the projecting portion, And a dispersion projection having a slope of a predetermined inclination which widens from the upper part to the lower part.

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