KR100823585B1 - Iron Oxide Crushing Collector for Acid Recovery Facility Reactor - Google Patents

Abstract

An object of the present invention is to effectively treat the iron oxide discharged from the reactor of the acid recovery facility, to crush the iron oxide in the lump state to be transported to the powder state, reducing the load of the equipment and the mechanical work is easy to manage equipment It is to provide an iron oxide crushing collector of a reactor for recovering acid.

Accordingly, the present invention, the bottom surface is a leveling device for collecting iron oxide, a vertical rotary feeder to which the iron oxide transferred from the leveling device is dropped, and an oxide for transporting the iron oxide dropped by being connected to the end of the rotary feeder to the iron oxide collection tank A reactor for an acid recovery facility including a conveyor, the reactor comprising: a pulverizing unit for crushing agglomerated iron oxide falling in a rotary feeder mounted on the bottom of the reactor, and on a branch line connected to one side of the rotary feeder; Iron oxide crushing collection device installed in the acid recovery facility reactor characterized in that it comprises a transfer unit for moving the lumped iron oxide to the branch line, the crushed iron pulverized iron oxide is installed at the end of the rotary feeder and put into the oxide conveyor To provide.

Pressing roll, wire mesh belt, screen net, air pipe, grinding plate, grinding drum

Description

Device for crushing and collecting oxidized steel of fluidized bed reactor in hydrochloric acid facility

1 is a perspective view showing a state in which the iron oxide crushing collector is installed in the reactor according to the present invention,

Figure 2 is a perspective view of the iron oxide crushing collection device according to the invention,

Figure 3 is a schematic cross-sectional view showing the operating state of the iron oxide crushing collection device according to the present invention,

4 is a partial detailed view of the iron oxide crushing collection device according to the invention,

5 is a cross-sectional view of FIG. 4 according to the present invention;

Figure 6 is a perspective view of the iron oxide collection device of the reactor according to the prior art.

Explanation of symbols on the main parts of the drawings

10: pressure roll 11,30: drive roll

12: wire mesh belt 13,34,36,53: drive motor

20: branch line 31,32: support roll

33: screen network 35: brush roll

37: air pipe 38: injection nozzle                 

50: hopper 51: grinding plate

52: grinding drum 54: inlet pipe

The present invention relates to an acid recovery facility of a stainless annealing pickling process, and more particularly, to an iron oxide pulverization collection device installed in a reactor of an acid recovery facility for collecting and treating iron oxide.

In general, stainless is subjected to a pickling process, and thus, an oxidative scale generated on the surface of the strip during hot rolling can be chemically removed using hydrochloric acid.

In the pickling process, toxic pollutants such as hydrochloric acid and sulfuric acid are used and discharged. The waste acid used is collected in the waste acid tank, which is an intermediate process, and is sent to an acid recovery facility for reuse. Is played.

That is, since heavy metals (chromium, nickel, etc.) and iron are dissolved in a large amount of waste acid, they are collected as iron oxides in a reactor and then manufactured into pellets and reused as raw materials for steel mills.

The reactor is equipped with a spray boom connected to a hose through which waste acid flows. The waste acid is introduced into the furnace at the upper part of the reactor through the nozzle of the spray boom. It undergoes pyrolysis and oxidation to separate iron oxide and acid gas.

The manufactured iron oxide is collected through the leveling device 110 installed on the bottom of the reactor 100 as shown in FIG. 6 and then freely dropped through the rotary feeder 120, followed by the oxide conveyor 130. It is transported along and stored in the iron oxide collection tank, the branch line 140 is installed in the middle of the rotary feeder 130 and the rotary feeder connection portion of the branch line 140 to filter out the iron oxide falling in the form of a branching line It has a structure in which a filter 141 for circulating is provided.

However, the above-described conventional structure has no means for properly removing the lumped iron oxide when it is caught in the grate screen filter, and the operator checks the screen filter at any time, draws out the filter, and cleans the lumped iron oxide stuck in the filter. There was a factor in wasting human resources.

In addition, when iron oxide is caught in a large amount of filter, the iron oxide is not properly processed by the oxide conveyor and scattered out, and the red iron powder is scattered by the lump-shaped iron oxide falling to the floor, which adversely affects the environment.

In addition, the collecting container containing the lump iron oxide is carried out in a pair of two people by weight, there is a problem that the risk of safety accidents are large.

Accordingly, the present invention has been made in order to solve the above problems, to effectively treat the iron oxide discharged from the reaction furnace of the acid recovery facility, to crush the iron oxide in the lump state to be transferred to the powder state, load of the equipment Its purpose is to provide an iron oxide pulverization collection device for an acid recovery plant reactor that is easy to maintain and mechanically operate.

The present invention for realizing the above object is, in the reactor of the acid recovery equipment, a crushing unit for crushing agglomerated iron oxide which is installed in the rotary feeder mounted on the bottom of the reactor and falling, and on one side of the rotary feeder It is installed on the branch line connected to the installation includes a conveying unit for moving the lump iron iron to the branch line, a crushing unit for crushing the lumped iron oxide transported and installed at the end of the rotary feeder into the oxide conveyor.

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

1 is a perspective view showing a state in which the iron oxide crushing collector is installed in the reactor according to the present invention, Figure 2 is a perspective view showing the iron oxide crushing collector according to the present invention, Figure 3 is iron oxide crushing collection according to the present invention A schematic cross-sectional view showing the operating state of the device.

According to the drawings, the reactor 100 is for producing iron oxide from the waste acid, the bottom surface is a leveling device 110 for collecting the iron oxide, and the vertical rotary to drop the iron oxide transferred from the leveling device 110 The feeder 120 and the rotary feeder 120 is connected to the end includes an oxide conveyor 130 for transporting the dropped iron oxide to the iron oxide collection tank.                     

Herein, the present invention, in the acid recovery facility reactor 100 of the above structure, the crushing unit for crushing the lumped iron oxide is installed in the rotary feeder 120 mounted on the bottom surface of the reactor 100, and the above, The transfer unit is installed on one side of the rotary feeder 120 and is installed on a branch line extending to one side of the oxide conveyor 130 to move the agglomerated iron oxide to the branch line, and the agglomerated iron oxide installed at the end of the rotary feeder 120 is transferred. It includes a crushing unit for crushing and input to the oxide conveyor 130.

The crushing unit is a pair of pressure rolls 10 installed in the inner center of the rotary feeder 120 at the upper part of the separation line, and driving rolls 11 and the pressure rolls 10 driven on both inner surfaces of the rotary feeder 120. Wire mesh belt 12 spanning the roll 11, the rotary feeder 120 is installed outside and is connected to each drive roll 11 includes a drive motor 13 for rotating the drive roll (11).

The drive roll 11 is located above the installation position of the pressure roll 10 so that the iron release belt 12 to form a structure inclined downward toward the pressure roll (10).

Therefore, each wire mesh belt 12 is arranged in a V-shape to enter the iron oxide falling between the pressing roll 10 located in the center.

And looking at the conveying unit is installed up and down on the lower side of the branch line 20 through the drive roll 30 and the rotary feeder 120 is installed on the upper portion of the branch line 20 communicating with the rotary feeder 120. Screen net 33, branch line 20 for filtering the iron oxide in the form of agglomeration of the iron oxide falling across the upper and lower support rolls 31 and 32, the driving roll 30 and the upper and lower support rolls It is installed on the upper and connected to the drive roll 30, the drive motor for rotating the drive roll 30, rotatably installed inside the branch line 20 is in close contact with the upper support roll 31 Brush roll 35, installed in the branch line 20 and connected to the brush roll 35 between the drive motor 36, the upper and lower support rolls (31, 32) for rotating the brush roll 35 A spray furnace installed in the air pipe 37 and the air pipe 37 placed in the width direction inside the screen net 33 toward the screen net 33. 38, via the branch line 20 is connected to the air pipe 37 includes an air hose 39 for supplying air.

According to the present embodiment, the connection between the drive motors 34 and 36, the drive rolls 30, and the brush rolls 35 may include a sprocket wheel installed on the axis of rotation of the drive motor and the axes of the drive rolls 30 and the brush rolls 35. 41) and through the chain 42 connecting the respective sprocket wheel 41.

Accordingly, the powdered iron oxide that has passed through the pulverization part passes through the screen net 33 and falls downward, and the large agglomerated iron oxide is moved along the screen net 33 rotating through the sieve hooked to the screen net 33 and the branching line ( 20) is dropped from the screen net 33 by the brush roll 35 and the sprayed air from the bottom to fall to the branch line 20 lower.

On the other hand, as shown in Figures 4 and 5, the crushed iron oxide discharged through the branch line 20 to finally crushed to form a powder, the hopper connected to the lower end of the branch line (20) 50), the crush plate 51 forming a screw-shaped uneven groove provided on the inclined inner wall of the hopper 50, rotatably installed with a predetermined gap with the lower end of the crush plate 51, the surface of the screw type On the bottom surface of the driving motor 53 and the hopper 50, which are installed on the grinding drum 52 and the hopper 50 having an uneven groove, are connected to the rotating shaft of the grinding drum 52 to rotate the grinding drum 52. Installed and connected to one side of the oxide conveyor 130 includes an inlet pipe 54 for discharging the powdered iron oxide crushed.

The drive motor 53 is connected to the hopper 50 via the reducer 55, and the reducer is connected to the rotary shaft of the grinding drum 52 via the link member 56 inside the hopper 50. .

Hereinafter will be described the operation of the present invention.

The iron oxide manufactured in the reactor 100 and dropped on the rotary feeder 120 is first advanced to the pair of pressure rolls 10 by the wire mesh belt 12 installed in the rotary feeder 120 to pressurize the roll 10. It is crushed while going through.

That is, when the work is in progress, the driving motor 13 of the pulverization unit is operated to rotate the driving roll 11 connected to the driving motor 13, and the driving roll 11 and the pressure roll according to the rotation of the driving roll 11. The wire mesh belt 12 is moved across the 10 to advance the iron oxide falling to the wire mesh belt 12 between the pressure roll (10).

The two pressing rolls 10 having only a small gap are primarily crushed iron oxide entering between the pressing rolls 10 and sent down.

The iron oxide passed through the crushed portion falls on the inclined screen net 33 installed about the middle of the rotary feeder 120.

Among the iron oxides dropped into the screen net 33, the iron oxide in the form of fine powder than the mesh size of the screen net 33 is passed through the screen net 33 as it is, and falls downward. It is caught on the net 33 and placed on the screen net.

On the other hand, the screen net 33 is rotated by the driving roll 30 is rotated by receiving power through the sprocket wheel 41 and the chain 42 in accordance with the operation of the drive motor 34, agglomerated iron oxide The hanging sieve moves downward.

The lumped iron oxide attached and moved to the screen net 33 enters the branch line 20 and is branched by the brush roll 35 which is rotated by the operation of the driving motor 36 in the upper support roll 31. 20) Dropping from inside

In addition, as the air is injected into the screen net 33 through the injection nozzle 38 of the air pipe 37 installed between the upper support roll 31 and the lower support roll 32, All of the lumped iron oxide is dropped from the screen net 33 and falls below the branch line 20.

According to the present invention, the drive motor 34 for rotating the screen net 33 is selectively operated according to the blocked state of the screen net 33, that is, the bottom of the branch line 20 and the screen net 33 When the pressure inside the rotary feeder is detected by comparing the pressure inside the rotary feeder 120 at the upper part, the screen net 33 is considered to be blocked by the iron oxide, and each driving motor 34 of the moving part is considered. ) To move the screen net 33, to rotate the brush roll 35, and to open the solenoid valve 40 of the air hose (39).

On the other hand, the lumped iron oxide moved to the lower portion of the branch line 20 through the moving part is introduced into the hopper 50 through the hopper 50.                     

The agglomerated iron oxide introduced into the hopper 50 is crushed by the grinding drum 52 which is rotated by the operation of the driving motor 53 and the grinding plate 51 of the inner wall of the hopper 50 to form a fine powder and thus an inflow pipe. Through the 54 is input into the oxide conveyor 130.

That is, the grinding plate 51 and the grinding drum 52 are formed with a plurality of uneven grooves, the grinding plate 51 and the grinding drum (as the grinding drum 52 rotates with respect to the fixed grinding plate 51) 52) In the process of lump iron oxide escape through the gap between the crushed by the uneven groove.

The crushed iron oxide is introduced into the oxide conveyor 130 through the inflow pipe 54 without being discharged separately in the form of fine powder and is transferred to the iron oxide collection tank.

As described above, according to the iron oxide pulverization collection apparatus of the acid recovery equipment reactor according to the present invention, mechanically pulverized agglomerated iron oxide can be transported to reduce the time and effort required for the treatment work and to increase the recovery oil of iron oxide. Will be.

In addition, there is an effect that can prevent clogging by iron oxide and environmental pollution by iron oxide splashing.

Claims (4)

The bottom surface includes a labeling device for collecting iron oxide, a vertical rotary feeder to which iron oxide delivered from the labeling device is dropped, and an oxide conveyor connected to the end of the rotary feeder to transport the dropped iron oxide to the iron oxide collection tank. In the reactor of the recovery facility, A pulverizing unit for pulverizing agglomerated iron oxide which is installed in a rotary feeder mounted on the bottom of the reactor and falls; A transfer part installed on a branch line connected to one side of the rotary feeder to move the agglomerated iron oxide to a branch line; Crushing unit installed at the end of rotary feeder to crush the transferred iron oxide and put it into the oxide conveyor Iron oxide crushing collection apparatus of the acid recovery facility reactor comprising a. According to claim 1, wherein the crushing unit is a pair of pressure rolls installed in the inner center of the rotary feeder, drive roll pressure rolls provided on both inner surfaces of the rotary feeder and the wire mesh belt spanning the drive rolls, installed on the rotary feeder outside And a driving motor connected to each driving roll to rotate the driving roll. According to claim 1, wherein the transfer unit is a driving roll is installed on the upper portion of the branch line communicating with the rotary feeder, the upper and lower support rolls installed on the lower side of the branch line through the rotary feeder, the driving roll and Screen net for filtering iron oxide in the form of agglomeration of iron oxides falling across the upper and lower support rolls, a drive motor for rotating the drive roll installed on the branch line, rotatably installed inside the branch line Brush rolls in close contact with the support rolls, branch lines, drive motors for rotating the brush rolls, air pipes placed in the width direction inside the screen nets between the upper and lower support rolls, and installed on the air pipes. An acid recovery nozzle comprising an air hose for supplying air connected to the air pipe through a spray nozzle and a branching line to the air; Iron oxide grinding collector in non-reactor. The crushing plate according to any one of claims 1 to 3, wherein the crushing unit comprises a hopper connected to the lower end of the branch line, a crush plate forming a screw-shaped uneven groove provided on an inclined inner wall of the hopper, and a lower end of the crushing plate. It is installed to be rotatable with a certain gap, and the surface of the grinding drum is formed in the grooves of the concave-convex groove, the drive motor for rotating the grinding drum is connected to the rotary shaft of the grinding drum, installed on the bottom of the hopper and the oxide conveyor Iron oxide crushing collection device of the acid recovery unit reactor characterized in that it comprises an inlet pipe for discharging the powdered iron oxide crushed connected to one side.

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