KR20030013786A - An apparatus for blocking dispersion of dust in a coal drier - Google Patents

Abstract

PURPOSE: An apparatus for blocking scattering of dust in coal drier is provided to block internal dust from flowing out to the outside, thereby improve working conditions and prevent environmental pollution by completely sealing gap formed in a connection region between a rotation part that is rotated in a direction and a chute the position of which is fixed. CONSTITUTION: In a facility in which coal is supplied into a cylindrical rotation part(114) rotated in a direction so that the coal is dried in the rotation part(114), the apparatus for blocking scattering of dust in coal drier comprises a condensate water pipe(2) which is arranged in the center of the rotation part(114) so that condensate water generated from the inside of the rotation part(114) is flown into the rotation part(114); a first tank(10) in which circular ring shaped inner spaces (P1) are connected to each other by means of the condensate water pipe(2) and a plurality of connection pipes(12,13), and which is mounted on the outer circumferential surface of the rotation part(114) so that the first tank(10) is rotated together with the rotation part(114); and a second tank(20) that is equipped with circular ring shaped inner spaces (P2) to which the upper part of circular ring shaped guide liners(15) extended from the first tank(10) is slidingly connected so that a certain amount of condensate water is filled in the circular ring shaped inner spaces (P2), and that is connected to a circular ring shaped subsidiary chute(25) so that position of the second tank(20) is fixed for the first tank(10) rotated, wherein the circular ring shaped subsidiary chute(25) is fixedly arranged to encircle upper and lower discharge ports(114a,114b) from which hot gas and coal are discharged.

Description

Dust scattering device of raw coal dryer {AN APPARATUS FOR BLOCKING DISPERSION OF DUST IN A COAL DRIER}

The present invention relates to a device for preventing dust from scattering to the outside in a dryer for drying the raw coal, more specifically, the internal dust by completely sealing the gap generated in the connection portion between the rotating part rotated in one direction and the fixed chute, The present invention relates to a dust scattering device for a raw coal dryer that improves working conditions by preventing leakage to the outside and prevents environmental pollution.

In general, COAL MOISTURE CONTROL PROCESS of steel mills is to systematically dry the existing coke-making raw coal to lower moisture and load it into a post process.

1 is a schematic view showing a general raw coal drying equipment, as shown, the raw coal stored in the colvin 101 is supplied to the side feed feeder 103 side through the belt conveyor 102, and is supplied to the feeder 103 The raw coal thus obtained is a cylindrical rotary part 114 rotated in one direction by a driving source (not shown), a steam pipe 115 installed in the rotary part 114 to provide a heat source for drying the raw coal, and hot gas finished with drying. ) Is equipped with a dryer 110 made of a chute 116 and the like is discharged.

In addition, a discharge feeder 107 is provided at the exit side of the cylindrical part 114 to transfer the dried raw coal to a post process, and another supply of hot gas may be supplied into the rotary part 114 to the supply feeder 103. The hot gas supply fan 108 is connected in communication with the connecting pipe 108a.

Accordingly, the raw coal injected into the cylindrical portion 104 rotating in one direction is dried by the steam heat source provided by the steam pipe 115 and the hot gas heat source provided by the hot gas supply fan 108, and then discharged. Discharge transfer to the post-process through the (107), while a dust collecting device 109 is provided at the end of the chute 116 to discharge the hot gas after the raw coal drying operation to remove the dust contained in the hot gas.

On the other hand, the dryer 110 generates a gap in the connection portion between the cylindrical rotary part 114 and the position-fixed chute 116 rotated in one direction, through which fine dust in the raw coal is dried under the influence of hot gas Scattered to.

Accordingly, in order to seal the space between the rotary part 114 and the chute 116, asbestos (asbestos) made of asbestos material is formed on the outer circumferential surface of the rotary part 114 in contact with both sides of the chute 116 as shown in FIG. 2. asbestos) 118, and then tensioned and pulled the spring wire 119, thereby sealing the connection to prevent dust from flowing out.

However, in the conventional method, when the Asbestos 118 is worn out, internal coal is caught in a gap, or warping occurs, it is difficult to completely seal the dust and thus does not completely block the outflow of dust to the outside, thereby generating air pollution. There was a problem letting.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, the object of which is to completely close the gap generated in the connection portion between the one-way rotating portion and the fixed chute, the internal dust flows out It is to provide a dust scattering device of raw coal dryer that can improve the working conditions and prevent environmental pollution.

1 is a schematic view showing a general raw coal drying equipment,

2 is a block diagram of sealing between the rotating part and the chute of the conventional raw material coal drying equipment,

Figure 3 is a longitudinal sectional view showing a dust scattering device of the raw coal drying machine according to the present invention,

Figure 4 is a perspective view showing a dust scattering device of the raw coal drying machine according to the present invention,

Figure 5 is a use state showing the dust scattering apparatus of the raw coal drying machine according to the present invention.

Explanation of symbols on the main parts of the drawings

2 ..... Condensate piping 3 ...

10 .... 1st tank 12,13 ... connecting pipe

15 .... Judo Liner 16 .... Bracket

20 .... 2nd Tank 25 .... Auxiliary Suit

26 .... fixed plate 106 .... chute

114 .... Rotary 120 .... Rotary Joint

As a technical configuration for achieving the above object, the present invention,

In the equipment for supplying and drying the raw coal into the cylindrical rotating section rotating in one direction,

A condensate pipe disposed at the center of the rotating part such that the condensed water generated in the rotating part is introduced into the rotating part;

A first tank in which the annular inner spaces are connected to each other via the condensate pipe and the plurality of connection pipes, and are mounted on an outer circumferential surface of the rotating part to rotate together with the rotating part;

The upper end of the annular induction liner extending from the first tank is slidably connected and has an annular inner space in which a certain amount of condensate is filled, and surrounds the upper and lower outlets through which hot gas and raw coal are discharged. It is connected to the ring-shaped auxiliary chute is fixedly disposed by the dust scattering device of the raw coal drying machine, characterized in that it comprises a second tank which is fixed relative to the rotating first tank.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is a longitudinal sectional view showing a dust scattering device of the raw coal dryer according to the present invention, Figure 4 is a perspective view showing a dust scattering device of the raw coal dryer according to the present invention, Figure 5 is a raw coal drying machine according to the present invention A state diagram showing the use of dust scattering devices.

The apparatus 1 of the present invention, as shown in Figures 3 to 5, a cylindrical rotary part 114 for drying and discharging the raw coal supplied inside while rotating in one direction by a driving source not shown, and steam heat source when drying the raw coal In addition, by preventing the dust of the raw coal from flowing out through the gap generated between the hot gas discharge chute 106 for discharging the hot gas provided to another heat source, such a device (1) condensate pipe (2) and the annular first tank portion 10 which is rotated together with the rotary part 114 and the second tank 20 which is fixed together with the chute 106.

That is, the condensate pipe (2) is a pipe member disposed in the longitudinal direction in the center of the center of rotation of the rotating part 114 to allow the condensate generated in the rotating part 114 to enter therein.

Here, a rotary joint 120 is connected to the front outer surface of the rotary part 114 to supply steam into the rotary part 114 while being rotated in one direction, and the rotary joint 120 has an inner circumferential surface of the rotary part 114. The steam supply line 121 is connected to supply the high temperature steam to the inlet 115a of the steam pipe 115 disposed in the vicinity of the plurality of steam pipes 115, and the drain line 122 is also connected to discharge the condensed water outside. On the other hand, the inlet 115a of the steam pipe 115 is a disk-type installed in the rotating part 114 to form a chamber (C) to temporarily stay at a constant pressure steam supplied from the steam supply line 121 The vertical bulkhead 123 is exposed. Accordingly, a large amount of condensed water is generated in the chamber C due to the remaining steam and the external temperature difference.

In addition, the condensate pipe (2) has an inlet (3) in communication with the absorption hole (3a) formed in the central portion of the vertical partition wall 123 to allow the inflow of condensate generated in the chamber (C) at the tip In addition, the inlet 3 is preferably configured in a conical shape of the hollow of the outer diameter is increased while going inward to prevent the condensate flowing into the pipe back, the inlet (3) It is preferable to mount the filter member 3b to filter the contaminants contained therein so as to filter the condensed water introduced into the condensed water pipe 2.

In addition, the first tank 10 which is rotated in one direction together with the rotary part 114 is connected to the condensate pipe 2 and the plurality of connection pipes 12, 13 by the condensate pipe 2 and It is a tank member having a ring-shaped inner space (P1) that can be stored a certain amount of condensed water introduced through the connecting pipe (12, 13), the first tank 10 and the outer surface of the rotary part 114 By integrally mounted via the sealing member so that the outflow of the condensate water, it is rotated together with the rotating part 114 rotated in one direction during the drying of the raw material carbon.

Here, the connection branch pipe 12, 13 is a passage extending from the condensate pipe (2) in the radial direction of the rotary part 114, the hot gas finished the drying operation to the top, and discharges the dried raw coal bottom It is a pipe member connected to each lower surface of the ring-shaped first tank 10 mounted before and after the chute 106 as a boundary.

In addition, the second tank 20 positioned relative to the first tank 10 rotated together with the rotary part 114 has an annular guide liner extending radially from an upper surface of the first tank 10. The upper and lower portions of the 15 are connected in a slidable manner so that a predetermined amount of condensed water introduced through the condensate pipe 2, the connection pipe 12, 13, the first tank 10, and the induction liner 15 is fixed. It is a tank member having a ring-shaped inner space (P2) of a certain size to fill.

The second tank 20 is integrally connected to the auxiliary chute 25, which is fixedly arranged to surround the outer circumferential surface with respect to the rotary part 114 rotated in one direction during the raw material drying operation, through the annular fixed plate 26 as a medium. The auxiliary chute 25 has an upper outlet 114a through which the hot gas finished in the rotating part 114 is discharged to the upper portion, and a lower outlet outlet through which the raw coal dried by the heat source is discharged downward. It is a fixing member disposed on the outer circumference of the rotating part 114 in an annular shape to surround (114b).

The auxiliary chute 25 has an upper side outlet 114a and a lower end in communication with each other, and an upper side chute 106 for directing hot gas to the dust collecting equipment 109 and the lower side outlet 114b and an upper end communicate with each other. The lower chute 106 for guiding the raw coal to the discharge feeder 107 side is fixed.

Here, the induction liner 15 is formed to narrow the inner cross-section toward the second tank 20 side to minimize the back flow of the condensed water flowing from the first tank 10 to the second tank 20 side, The condensed water in the second tank 20 flows to the outside while smoothly rotating the first tank 10 with respect to the fixed second tank 20 on both sides of the upper end of the induction liner 15. It is preferable to mount each of the 'c' shaped guide brackets 16 which are slidably assembled to the annular openings of the lower surface of the second tank 20 so as to prevent them.

The operation of the present invention having the configuration as described above will be described.

First, in order to dry the coal briquettes supplied into the cylindrical rotating part 114, high temperature steam is supplied to the high temperature steam through the steam supply line 121 of the rotary joint 120 mounted on one side of the rotating part 114. When supplied into the chamber C formed by the vertical bulkhead 123, the raw coal supplied into the rotating unit 114 rotated in one direction by a driving source not shown is steam pipes 115 whose tip is exposed to the vertical bulkhead 123. Steam is supplied to the dried by the heat source of the hot gas supplied into the rotary unit 114 through the hot gas supply fan 108, the dried raw coal is discharged through the lower outlet formed in the rotary unit 114 On the other hand, the hot gas, which has been dried, is induced and discharged to the dust collector 109 through the upper outlet.

During the raw coal drying operation, condensate is generated in the chamber C of the rotating unit 114 due to a temperature difference, and some of the condensate is discharged to the outside through a drain line, but the other part is an absorption hole formed in the vertical bulkhead 123. It flows into the (3a) side. And, since the absorption hole (3a) is in communication with the condensate pipe (2) having a hollow cone-shaped inlet (3) of the outer diameter is increased to the inside to prevent the condensate flowing into the pipe back flow, The condensed water introduced into the absorption hole 3a flows into the condensed water pipe 2 disposed at the center of the rotating unit 114.

Continuously, the condensed water introduced into the condensed water pipe 2 extends in a direction perpendicular to the longitudinal direction of the condensed water pipe 2 by the one-way rotational force of the rotating part 14 to be integral with the outer circumferential surface of the rotating part 114. It is stored in the first tank (10) through the connection pipes (12, 13) in communication with the inner space (P1) of the first annular ring-shaped tank (10).

The condensed water collected in the inner space P1 of the first tank 10 is connected to the second ring-shaped induction liner 15 by the centrifugal force of the rotating part 114 rotated in one direction during the drying operation of the raw coal. It is introduced into the internal space P2 of the tank 20 and stored therein. In addition, induction of condensed water flows between the first tank 10 rotated together with the rotary part 114 and the second tank 20 fixed to the fixed plate 26 of the fixed auxiliary chute 25. Since the liner 15 is connected to each other, through the gap between the rotary part 114 and the chute 106, it is possible to fundamentally completely prevent the dust of the raw coal from flowing out.

The annular ring type guide bracket 16 mounted on the upper end of the annular guide liner 15 extending radially from the upper surface of the annular first tank 10 is fixed to the auxiliary chute 25. By being assembled in the opening of the lower surface of the second tank 20, the upper end of the guide liner 15 rotated together with the first tank 10 is positioned while minimizing the outflow of condensate in the second tank 20 to the outside. It can be rotated along the lower surface of the fixed second tank 20. At this time, the small amount of condensed water is generated in the steam tube 115, the chamber (C) is filled by the condensed water continues to flow into the condensate pipe (2).

In addition, the induction liner 15 when the condensed water guided from the first tank 10 to the second tank 20 by the centrifugal force of the rotary unit 114 and the supply pressure of the steam passes through the induction liner 15. By expanding the inside of the), the friction portion while minimizing the gap between the opening of the upper side of the rotating induction liner 13 and the lower opening of the second tank 20 that does not rotate to prevent the loss of condensate through it It can cool.

On the other hand, when the operation of drying the raw coal is completed and the rotary unit 114 is stopped, the supply of steam and hot gas to the steam pipe 115 is stopped to stop the generation of condensate, and the steam pressure is lost, Condensed water in the chamber (C) is externally discharged through the drain line (122).

Therefore, according to the present invention having the above-described configuration, the condensed water generated in the rotary part rotated in one direction during the raw coal drying operation is temporarily stored in the inner space of the first and second tanks, and induction is connected between the first and second tanks. By forming a condensate sealing film as a liner, through the gap between the rotating part of the rotating member and the chute of the fixing member completely prevents the dust of the dried raw coal to flow to the outside to prevent the environmental pollution.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (4)

In the equipment for supplying and drying the raw coal into the cylindrical rotary section 114 that rotates in one direction, A condensate pipe (2) disposed at the center of the rotating part (114) so that the condensate generated in the rotating part (114) is introduced therein; The condensed water pipe (2) and the plurality of connection pipes (12, 13) through the ring-shaped inner space (P1) is connected to each other, and is mounted on the outer circumferential surface of the rotating part 114 and the rotating part 114 and In addition, the first tank 10 that rotates, The upper end of the ring-shaped induction liner 15 extending from the first tank 10 is connected in a slidable communication with a ring-shaped inner space (P2) filled with a certain amount of condensate, hot gas, raw coal is discharged A second tank 20 which is connected to the annular auxiliary chute 25 fixedly disposed to enclose the upper and lower outlets 114a and 114b and is fixed with respect to the rotating first tank 10. Dust scattering device of the raw coal drying machine characterized in that it comprises a. The method of claim 1, The condensate pipe (2) has an inlet (3) in communication with the absorption hole (3a) formed in the central portion of the vertical partition 123 in the rotary section 114 to allow the inflow of the condensate in the rotary section 114 at the tip And, the inlet (3) is dust scattering device of the raw coal dryer characterized in that it consists of a hollow cone shape of the outer diameter is increased while going inward to prevent the condensed water introduced into the pipe back. The method of claim 1, The induction liner 15 is characterized in that the inner cross-section is narrower toward the second tank 20 side to minimize the back flow of condensed water from the first tank 10 to the second tank 20 side Dust scattering device of raw coal dryer. The method according to any one of claims 1 to 3, The condensed water in the second tank 20 flows to the outside while smoothly rotating the first tank 10 with respect to the fixed second tank 20 on both sides of the upper end of the induction liner 15. Dust scattering device of the raw coal drying machine, characterized in that the 'c' shaped guide brackets 16 are mounted to the opening of the lower surface of the second tank 20 so as to be prevented.