KR102143116B1 - Dust collecting apparatus and dust collecting method - Google Patents

Abstract

The present invention is a dust collector in which a path through which the exhaust gas moves is formed so as to collect dust in the exhaust gas; And a plurality of injectors installed to spray the collecting fluid for collecting dust inside the dust collector, and capable of injecting the collecting fluid in different directions, and can effectively suppress or prevent dust leakage.

Description

Dust collection device and dust collection method {DUST COLLECTING APPARATUS AND DUST COLLECTING METHOD}

The present invention relates to a dust collecting device and a dust collecting method, and more particularly, to a dust collecting device and a dust collecting method capable of effectively suppressing or preventing dust leakage.

In general, the operation of the converter proceeds in the order of blowing the molten iron by blowing oxygen into the converter, the process of releasing the molten iron, and the process of excluding slag in the converter. At this time, in the process of blowing molten iron, the main raw materials, scrap iron and molten iron, are charged into the converter, and oxygen is supplied into the converter using a lance, so that carbon (C), silicon (Si), manganese ( It is an operation that removes Mn), phosphorus (P), sulfur (S), and titanium (Ti). During the process of blowing molten iron, quicklime, light calcined dolomite, sintered ore, and fluorspar are supplied to the converter, and impurities such as silicon (Si), phosphorus (P), manganese (Mn), and titanium (Ti) are removed by forming slag. I can.

On the other hand, when loading scrap iron and molten iron into a converter, flames and exhaust gases are generated by iron oxide and oil vapor contained in the scrap iron. Exhaust gas is also generated when refining the molten iron by injecting oxygen after charging scrap iron and charter to the converter. Since such exhaust gas causes environmental pollution, a dust collection facility is installed in the converter to collect the exhaust gas generated from the converter.

At this time, the dust collecting equipment may include a cooler, an electric dust collector, and a blower. Accordingly, the exhaust gas collected from the converter to the dust collection facility by the suction force of the blower is cooled by the cooler and sent to the electric dust collector, and the electric dust collector collects dust in the exhaust gas. Thereafter, the exhaust gas having a relatively low carbon monoxide concentration in the exhaust gas is burned and removed, and the exhaust gas having a relatively high carbon monoxide concentration may be stored and used as a fuel.

However, if an explosion occurs in the process of blowing molten iron, carbon monoxide and oxygen contained in the exhaust gas react inside the electric precipitator, or the electric precipitator stops working due to an abnormality, etc., an accident may occur in which dust is leaked from the electric precipitator. . Accordingly, dust may leak to the outside and cause environmental pollution.

In addition, when dust is leaked from the electric dust collector, the dust may be included in the exhaust gas stored for use as fuel. Accordingly, when the exhaust gas is supplied to another facility through a pipe or a nozzle in order to use the exhaust gas as a fuel, the inside of the pipe or nozzle is blocked by dust, so that the exhaust gas cannot be supplied to other facilities may occur.

Meanwhile, since the temperature of the exhaust gas generated from the converter is high, even if the exhaust gas is cooled by a cooler, the temperature of the exhaust gas sucked into the blower may be about 150 to 180°C. Accordingly, there is a problem in that the blower is deteriorated and the blower is damaged or the life of the blower is reduced.

KR 2015-0074619 A

The present invention provides a dust collecting device and a dust collecting method capable of effectively suppressing or preventing the outflow of dust.

The present invention provides a dust collector and a dust collection method capable of reducing the temperature of the exhaust gas by cooling the exhaust gas.

The present invention is a dust collector in which a path through which the exhaust gas moves is formed so as to collect dust in the exhaust gas; And a plurality of injectors installed to inject the collecting fluid collecting dust inside the dust collector and capable of injecting the collecting fluid in different directions.

The dust collector may include an inlet member through which exhaust gas can be introduced, a dust collecting member connected to the inlet member and capable of electrostatically collecting dust in the exhaust gas, and a dust collecting member connected to the dust collecting member and capable of discharging the exhaust gas passing through the dust collecting member. It includes a discharge member, and the plurality of injectors are installed on the discharge member.

The injector may include: a first injector installed to inject the collecting fluid in the moving direction of the exhaust gas inside the dust collector; And a second injector spaced apart from the first injector and installed to inject the collecting fluid in a direction crossing the moving direction of the exhaust gas inside the dust collector.

A plurality of the first injectors and the second injectors are provided and alternately disposed with each other.

The first injector may include: a first line disposed to surround at least a portion of an inner circumference of the discharge member, and forming a path through which the collecting fluid moves; And a plurality of first injection members installed on the first line so as to spray the collecting fluid.

The first injection member may include a first nozzle; And a second nozzle spaced apart from the first nozzle and disposed at a different angle from the first nozzle.

The angle between the first nozzle and the second nozzle is 10 degrees or more and 30 degrees or less.

The second injector may include: a second line disposed to surround at least a portion of an inner circumference of the discharge member, and forming a path through which the collecting fluid moves; And a plurality of second injection members installed on the second line so as to spray the collecting fluid toward the center of the discharge member.

It further includes an auxiliary injector installed so as to inject the collecting fluid from inside the first injector and the second injector.

The discharge member is formed to have a narrower width from one side to the other side, and the auxiliary injector is disposed in a region between the middle portion and one side of the discharge member.

The auxiliary injector may include a third line disposed in a space between the first injector and the second injector, and in which a path through which the collecting fluid moves is formed; And a plurality of third injection members installed in the third line so as to inject the collecting fluid into the discharge member.

The inclination is formed between one side and the other side of the discharge member, and further includes a collector connected to the lower side of one side of the discharge member so as to collect dust and collecting fluid collected on one side of the discharge member.

The present invention is a process of introducing exhaust gas into the dust collector; A process of first collecting dust in the exhaust gas inside the dust collector; Secondly collecting dust in the exhaust gas by spraying collecting fluids in different directions inside the dust collecting device; And discharging the exhaust gas to the outside of the dust collector.

The process of injecting the collecting fluid in different directions inside the dust collecting device includes: injecting the collecting fluid along the moving direction of the exhaust gas; And a process of injecting the collecting fluid in a direction crossing the moving direction of the exhaust gas.

The process of injecting the collecting fluid along the moving direction of the exhaust gas includes a process of separating the dust from the exhaust gas by contacting the collecting fluid and the dust, and dropping the dust together with the collecting fluid, and the moving direction of the exhaust gas. The process of injecting the collecting fluid in a direction intersecting with is a process of reducing the moving speed of the exhaust gas.

The exhaust gas includes exhaust gas generated from a converter, and the process of firstly collecting dust in the exhaust gas inside the dust collector includes a process of electrostatically collecting dust in the exhaust gas.

According to embodiments of the present invention, the dust collecting device may collect dust from exhaust gas in duplicate. Accordingly, it is possible to effectively suppress or prevent dust from flowing out of the dust collector. Therefore, it is possible to suppress or prevent the occurrence of environmental pollution due to exhaust gas.

In addition, it is possible to suppress or prevent the outflow of dust to the outside of the dust collecting device, thereby suppressing or preventing the dust from being included in the exhaust gas passing through the dust collecting device. Accordingly, it is possible to suppress or prevent clogging of a pipe or a nozzle forming a path through which the exhaust gas travels by dust. Therefore, it is possible to smoothly move the exhaust gas.

Meanwhile, the temperature of the exhaust gas can be reduced by cooling the exhaust gas in the dust collector. Accordingly, it is possible to suppress or prevent the intake unit that generates a suction force for inhaling exhaust gas from being thermally damaged by the exhaust gas. Accordingly, durability and life of the suction unit can be improved.

1 is a view showing the structure of a dust collecting facility according to an embodiment of the present invention.
2 is a perspective view showing a structure in which a first injector and a second injector are installed on a discharge member according to an embodiment of the present invention.
3 is a view showing the structure of a first injector according to an embodiment of the present invention.
4 is a view showing the structure of a second injector according to an embodiment of the present invention.
5 is a cross-sectional view showing structures of a first injector, a second injector, and a collector according to an embodiment of the present invention.
6 is a view showing the operation of the first injector and the second injector according to an embodiment of the present invention.
7 is a view showing the operation of the first injector, the second injector, and the auxiliary injector according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those skilled in the art is completely It is provided to inform you. The drawings may be exaggerated to describe the invention in detail, and the same reference numerals in the drawings refer to the same elements.

1 is a view showing the structure of a dust collecting facility according to an embodiment of the present invention. Hereinafter, a dust collecting facility according to an embodiment of the present invention will be described.

Referring to FIG. 1, a dust collection facility according to an embodiment of the present invention may be an exhaust gas treatment facility that processes exhaust gas generated in a converter 5. The dust collecting facility may include a hood part 10, a cooling part 20, a dust collecting device 100, a suction part 40, a distribution part 60, a storage part 80, and a discharge part 70. .

At this time, the dust collecting facility can suck the exhaust gas generated from the converter (5). However, the type of exhaust gas sucked by the dust collection facility is not limited thereto and may be various.

The hood portion 10 may be formed in a pipe shape. One end of the hood part 10 may be located above the converter 5, and the other end may be connected to the cooling part 20. Accordingly, the exhaust gas generated inside the converter 5 is sucked into the hood part 10 and can be moved to the cooling part 20.

The cooling unit 20 has a space through which exhaust gas can pass. The cooling unit 20 may inject water, steam, or mist into the exhaust gas passing through the inside. Accordingly, the exhaust gas may be cooled inside the cooling unit 20 to lower the temperature. At this time, the dust in the exhaust gas having a relatively large weight (or dust of coarse particles) may be separated from the exhaust gas by water, steam, or mist, and may be separated from the exhaust gas by falling downward.

In addition, the cooling unit 20 is disposed between the hood unit 10 and the dust collecting device 100. Accordingly, the exhaust gas generated in the converter 5 can be cooled in the cooling unit 20 and supplied to the dust collecting device 100. For example, the cooling unit 20 may cool the exhaust gas of about 900° C. to about 100° C. to 200° C. and move it to the dust collector 100.

The dust collecting device 100 has a space through which exhaust gas can pass. The dust collecting device 100 may be connected to the cooling unit 20. Accordingly, the exhaust gas cooled by the cooling unit 20 may move to the dust collector 100, and the dust collector 100 may collect fine dust in the exhaust gas.

The suction unit 40 may be a blower. The suction unit 40 is connected to the dust collecting device 100. Accordingly, the suction unit 40 may generate a suction force or a blowing pressure through which the exhaust gas of the converter 5 can be sucked into the dust collecting device 100. Accordingly, the suction unit 40 can guide the exhaust gas generated in the converter 5 to the distribution unit 60 after passing through the hood unit 10, the cooling unit 20, and the dust collecting device 100.

The distribution unit 60 may have one end connected to the suction unit 40 and the other end connected to the storage unit 80 and the discharge unit 70. The distribution unit 60 may detect the carbon monoxide concentration of the exhaust gas induced from the suction unit 40. Accordingly, the distribution unit 60 may distribute the exhaust gas to the storage unit 80 or the discharge unit 70 according to the carbon monoxide concentration. That is, exhaust gas that can be used as fuel due to its high carbon monoxide content is supplied to and stored in the storage unit 80, and exhaust gas that is difficult to reuse due to a low carbon monoxide content may be burned in the discharge unit 70 and discharged.

2 is a perspective view showing a structure in which a first injector and a second injector according to an embodiment of the present invention are installed on a discharge member, and FIG. 3 is a view showing a structure of a first injector according to an embodiment of the present invention, and FIG. 4 Is a view showing the structure of a second injector according to an embodiment of the present invention, Figure 5 is a cross-sectional view showing the structure of a first injector, a second injector, and a collector according to an embodiment of the present invention, Figure 6 is a view It is a view showing the operation of the first injector and the second injector according to an embodiment of the present invention. Hereinafter, the structure of the dust collector 100 according to an embodiment of the present invention will be described in detail.

1 and 2, the dust collecting device 100 is a device that collects dust (or dust) in the exhaust gas. The dust collecting device 100 includes a dust collector 110 and a plurality of injectors. At this time, the exhaust gas may be exhaust gas generated from the converter 5, and the dust collecting device 100 may be provided in the dust collecting facility. However, the type of exhaust gas processed by the dust collector 100 and the type of equipment in which the dust collector 100 is provided are not limited thereto and may be various.

In addition, in the following, it will be exemplarily described that the exhaust gas moves from the front end to the rear end of the dust collector 100. That is, exhaust gas may flow into the front end of the dust collector 100 and be discharged to the rear end of the dust collector 100. However, the present invention is not limited thereto, and the direction in which the exhaust gas moves may vary depending on the structure of the device.

The dust collector 110 may extend in the front-rear direction. The dust collector 110 has an exhaust gas movement path extending in the front-rear direction therein. Accordingly, the exhaust gas introduced into the front end of the dust collector 110 may pass through the interior of the dust collector 110 and be discharged to the rear end of the dust collector 110. The dust collector 110 may collect dust in the exhaust gas using an electric dust collection method. The dust collector 110 includes an inlet member 111, a dust collecting member 112, and a discharge member 113.

The inlet member 111 may be connected to the cooling unit 20, and exhaust gas cooled by the cooling unit 20 may be introduced into the inlet member 111. The inlet member 111 may increase in width from one side (or front end) to the other side (or rear end). For example, the inlet member 111 is formed in a conical shape, and the width may increase from a portion where exhaust gas is introduced to a portion discharged. A path through which exhaust gas can move is formed in the inlet member 111, and one side and the other side of the inlet member 111 may be opened.

The dust collecting member 112 is connected to the inlet member 111. The dust collecting member 112 may collect dust from the exhaust gas. For example, the dust collecting member 112 may collect dust in an electric dust collection method. One or a plurality of electric dust collecting plates may be arranged inside the dust collecting member 112. When power is supplied to the electric dust collecting plate, dust may be collected from exhaust gas passing through the dust collecting member 112 due to an electrostatic effect.

In addition, a plurality of dust collecting members 112 may be provided. For example, a first dust collecting member 112a, a second dust collecting member 112b, a third dust collecting member 112c, and a fourth dust collecting member 112d may be provided. The first dust collecting member 112a is connected to the rear end of the inlet member 111, the second dust collecting member 112b is connected to the rear end of the first dust collecting member 112a, and the third dust collecting member 112c is It is connected to the rear end of the second dust collecting member 112b, the fourth dust collecting member 112d is connected to the rear end of the third dust collecting member 112c, and the discharge member 113 is It can be connected to the rear end. Accordingly, the exhaust gas introduced into the inlet member 111 may pass through the plurality of dust collecting members 112 and move to the discharge member 113 after being separated from the dust. Therefore, dust collection efficiency can be improved by collecting dust multiple times. However, the number of the dust collecting members 112 is not limited thereto and may be various.

The discharge member 113 is connected to the dust collecting member 112 and may discharge exhaust gas that has passed through the dust collecting member 112 toward the distribution unit 60. When a plurality of dust collecting members 112 are provided, the discharge member 113 may be connected to the rearmost dust collecting member 112.

In addition, a path through which exhaust gas can move is formed in the discharge member 113, and the front end and the rear end of the discharge member 113 may be opened. The discharge member 113 may be formed to have a narrower width from one side (or front end) to the other side (or rear end). For example, the discharge member 113 may be formed in a conical shape, and the width may decrease from a part where exhaust gas is introduced to a part discharged. Accordingly, a downward slope from the rear end toward the front end may be formed under the discharge member 113.

The injector may be installed to inject the collecting fluid inside the dust collector 110. In detail, an injector may be installed inside the discharge member 113. Accordingly, the injector may inject a collecting fluid capable of collecting dust inside the discharge member 113. Accordingly, dust not collected by the dust collecting member 112 may be collected by the collecting fluid inside the discharge member 113.

In addition, a plurality of injectors may be provided to inject the collecting fluid in different directions. For example, a first injector 120 and a second injector 130 may be provided.

The first injector 120 and the second injector 130 may inject a collecting fluid to collect dust from exhaust gas. For example, the collecting fluid may be cooling water (or water). Thus, when the collecting fluid comes into contact with the exhaust gas, dust may be attached to the collecting fluid and collected. Accordingly, the dust falls below the discharge member 113 together with the collecting fluid, and the exhaust gas may pass through the inside of the discharge member 113.

The first injector 120 is installed on the dust collector 110. In detail, the first injector 120 may be installed to inject the collecting fluid from the inside of the discharge member 113. Accordingly, the collecting fluid injected from the first injector 120 may collect dust that has not been removed from the dust collecting member 112 and may cool the exhaust gas.

In addition, the first injector 120 may inject the collecting fluid in the moving direction of the exhaust gas. For example, the first injector 120 may inject the collecting fluid in the front-rear direction toward the rear end of the discharge member 113. Accordingly, the area in which the collecting fluid is injected from the first injector 120 and the area in which the exhaust gas moves may overlap each other. Therefore, by increasing the size of the area in which the collecting fluid and the exhaust gas can contact, the collecting fluid can easily collect dust in the exhaust gas. Referring to FIG. 3, the first injector 120 includes a first line 121 and a first injection member 122.

The first line 121 may be formed in a pipe shape. A path through which the collecting fluid moves may be formed inside the first line 121. Accordingly, the collecting fluid moving inside the first line 121 may be supplied to the first injection member 122.

In addition, the first line 121 may be disposed to surround at least a portion of the inner circumference of the discharge member 113. For example, the first line 121 may be formed in a circular ring shape. The first line 121 may be directly connected to and supported by the inner wall of the discharge member 113, and is supported by a support member (not shown) provided between the first line 121 and the inner wall of the discharge member 113 It could be.

The first injection member 122 may be installed on the first line. Accordingly, the collecting fluid moving inside the first line 121 is supplied into the first injection member 122 and may be injected in the direction in which the exhaust gas moves inside the discharge member 113.

In addition, a plurality of first injection members 122 may be provided. The first injection members 122 may be disposed to be spaced apart from each other along a direction in which the first line 121 extends. The first injection member 122 includes a first nozzle 122a and a second nozzle 122b.

The first nozzle 122a may extend in the front-rear direction. That is, the first nozzle 122a may be formed to protrude from the first line 121 toward the rear end of the discharge member 113. The front end of the first nozzle 122a is connected to the first line 121, and a jet hole may be formed at the rear end of the first nozzle 122a. Accordingly, the collecting fluid supplied into the first nozzle 122a may be sprayed through the injection port.

At this time, the discharge member 113 is formed to become narrower as it goes from the front end to the rear end. Accordingly, among the exhaust gases introduced into the discharge member 113, the exhaust gas passing through the center of the discharge member 113 moves in the front and rear direction, and the exhaust gas moving toward the inner wall of the discharge member 113 is the discharge member 113 ) It collides with the inner wall and moves along the inner wall. Accordingly, the first nozzle 122a may be arranged to be inclined along the inner wall shape of the discharge member 113, so that the collecting fluid may be sprayed in the moving direction of the exhaust gas moving along the inner wall of the discharge member 113.

The second nozzle 122b is spaced apart from the first nozzle 122a in the extending direction of the first line 121. The second nozzle 122b is disposed to be inclined at an angle different from that of the first nozzle. That is, as shown in FIG. 3A, the first nozzle 122a and the second nozzle 122b may be disposed to be alternately disposed. Accordingly, at least a portion of the collecting fluid sprayed from the second nozzle 122b and the first nozzle 122a may be sprayed toward different regions. Accordingly, the collecting fluid injected from the first nozzle 122a and the second nozzle 122b can contact the exhaust gas in a wider area, and the collecting fluid can collect a larger amount of dust.

In addition, an angle α between the first nozzle 122a and the second nozzle 122b in the horizontal direction in a plane as shown in FIG. 3B may be 10 degrees or more and 30 degrees or less. If the angle α between the first nozzle 122a and the second nozzle 122b is less than 10 degrees, the areas where the collecting fluid is sprayed overlap each other too much, reducing the amount of dust that can be collected by the collecting fluid. can do.

Conversely, if the angle α between the first nozzle 122a and the second nozzle 122b exceeds 30 degrees, one of the first nozzle 122a and the second nozzle 122b is By spraying in a different direction, the size of the area in which the collecting fluid contacts the exhaust gas may be reduced. Accordingly, the first nozzle 122a and the second nozzle are designed to reduce the overlapping of the collecting fluid sprayed from the first nozzle 122a and the second nozzle 122b while allowing the collecting fluid to be injected in the moving direction of the exhaust gas. The angle α between 122b can be adjusted.

Meanwhile, as shown in FIG. 2, a plurality of first injectors 120 may be provided. The first injectors 120 may be spaced apart from each other in the front-rear direction. Accordingly, the first injector 120 may inject the collecting fluid along the moving direction of the exhaust gas at a plurality of positions inside the discharge member 113. Accordingly, the exhaust gas is injected as a whole into the exhaust member 113, so that dust can be easily collected from the exhaust gas.

In addition, since the width of the discharge member 113 decreases from the front end to the rear end, the diameter of the first injector 120 close to the front end of the discharge member 113 is close to the rear end of the discharge member 113. It may be larger than the diameter of the first injector 120. Accordingly, the diameters of the first injectors 120 may decrease from the front end to the rear end.

The second injector 130 and the second injector 130 are installed on the dust collector 110. In detail, the second injector 130 may be installed to inject the collecting fluid from the inside of the discharge member 113. Accordingly, the collecting fluid injected from the second injector 130 can cool the exhaust gas that has passed through the dust collecting member 112 and collect dust that has not been removed from the dust collecting member 112. In this case, the second injector 130 may be disposed to be spaced apart from the first injector 120 in the front-rear direction.

In addition, the second injector 130 may inject the collecting fluid in a direction crossing the moving direction of the exhaust gas. For example, the second injector 130 may inject the collecting fluid in an up-down direction or a left-right direction toward the center of the discharge member 113. Accordingly, the collecting fluid injected from the second injector 130 may reduce the moving speed of the exhaust gas. Accordingly, since the time for the exhaust gas to pass through the inside of the discharge member 113 is delayed, sufficient time to collect the dust is secured, so that the dust can be more effectively collected with the collecting fluid. As shown in FIG. 4, the second injector 130 includes a second line 131 and a second injection member 132.

The second line 131 may be formed in a pipe shape. A path through which the collecting fluid moves may be formed inside the second line 131. Accordingly, the collecting fluid moving inside the second line 131 may be supplied to the second injection member 132.

In addition, the second line 131 may be disposed to surround at least a portion of the inner circumference of the discharge member 113. For example, the second line 131 may be formed in a circular ring shape. The second line 131 may be directly connected to and supported by the inner wall of the discharge member 113, and is supported by a support member (not shown) provided between the second line 131 and the inner wall of the discharge member 113 It could be.

The second injection member 132 may be formed in a nozzle shape. The second injection member 132 may be installed on the second line. Accordingly, the collecting fluid moving inside the second line 131 is supplied into the second injection member 132 and may be injected in a direction crossing the movement direction of the exhaust gas from the inside of the discharge member 113.

In addition, as shown in FIG. 2, a plurality of second injection members 132 may be provided. The second injection members 132 may be disposed to be spaced apart from each other along a direction in which the second line 131 extends. Accordingly, the collecting fluid injected from the second injection member 132 may be injected from the outer portion of the discharge member 113 toward the center.

Meanwhile, a plurality of second injectors 130 may be provided. The second injectors 130 may be spaced apart from each other in the front-rear direction. Accordingly, the second injector 130 may spray the collecting fluid at a plurality of positions inside the discharge member 113 along a direction crossing the moving direction of the exhaust gas. Therefore, it is possible to reduce the moving speed of the exhaust gas over a number of inside the exhaust member 113, and increase the time that the exhaust gas stays inside the exhaust member 113 to secure a sufficient time to remove dust from the exhaust gas. have.

In addition, since the width of the discharge member 113 decreases from the front end to the rear end, the diameter of the second injector 130 close to the front end of the discharge member 113 is close to the rear end of the discharge member 113. It may be larger than the diameter of the second injector 130. Accordingly, the diameters of the second injectors 130 may decrease from the front end to the rear end.

In this case, the first injectors 120 and the second injectors 130 may be connected to a main line (not shown) supplying the collecting fluid. Accordingly, the collecting fluid supplied from the main line may be supplied to the first injectors 120 and the second injectors 130 to be injected into the discharge member 113.

In addition, the first injectors 120 and the second injectors 130 may be alternately disposed with each other. Accordingly, the movement speed of the exhaust gas is reduced by the second injector 130 and dust can be easily collected from the exhaust gas whose movement speed is reduced by the first injector 120.

Meanwhile, as shown in FIG. 5, the dust collecting device 100 may further include a collector 140. Since the width of the discharge member 113 becomes narrower from the front end to the rear end, an inclination may be formed between the front end and the rear end at the bottom of the discharge member 113. Accordingly, the collecting fluid and dust falling below the discharge member 113 may move toward the front end of the discharge member 113 along the slope. The collector 140 is connected to a lower portion of the front end of the discharge member 113 and may collect collecting fluid and dust collected at the front end of the discharge member 113. The collector 140 includes a collection line 142, a valve 143, and a collection container 141.

The collection line 142 may be formed in a pipe shape. The collection line 142 may extend in the vertical direction, the upper end may be connected to the lower portion of the discharge member 113, and the lower end may be connected to the collection container 141. Accordingly, the collecting fluid and dust collected under the discharge member 113 may be discharged to the collection container 141 through the collection line 142.

The valve 143 is installed in the collection line 142. The valve 143 may open and close a path through which the collecting fluid and dust formed in the collection line 142 travel. Accordingly, when the valve 143 opens the inside of the collection line 142, the collected fluid and dust can pass through the collection line 142 and move to the collection container 141, and the valve 143 moves inside the collection line 142. When closed, the collecting fluid and dust may not pass through the collection line 142.

The container 141 may be formed in a box shape. The collection container 141 is connected to the collection line 142, and a space in which the collecting fluid or dust can be accommodated is formed. At least a part of the container 141 may be formed of a transparent material. Therefore, the operator can check the inside of the collection container 141, and when a certain amount of collecting fluid or dust is filled in the collection container 141, the collecting fluid and dust can be collected and processed from the collection container 141.

As described above, the dust collecting device 100 can collect dust from the exhaust gas in duplicate. That is, the dust collecting member 112 may first collect the dust, and the first injector 120 and the second injector 130 can collect the dust secondly by the collecting fluid injected from the inside of the discharge member 113. . Accordingly, even if the operation of the dust collecting member 112 is stopped, the first injector 120 and the second injector 130 collect dust with the collecting fluid, effectively suppressing or preventing the dust from leaking out of the dust collecting device 100 can do.

For example, as shown in FIG. 6, the first injector 120 injects the collecting fluid in the moving direction of the exhaust gas to increase the size of the area in contact with the collecting fluid and the exhaust gas, and the second injector 130 moves the exhaust gas. By spraying the collecting fluid in a direction crossing the direction, the moving speed of the exhaust gas can be reduced. Therefore, it is possible to suppress or prevent the occurrence of environmental pollution due to exhaust gas.

In addition, it is possible to suppress or prevent the dust from leaking out of the dust collecting device 100, thereby suppressing or preventing the dust from being included in the exhaust gas that has passed through the dust collecting device 100. Accordingly, it is possible to suppress or prevent clogging of a pipe or a nozzle forming a path through which the exhaust gas travels by dust. Therefore, it is possible to smoothly move the exhaust gas.

Meanwhile, the temperature of the exhaust gas may be reduced by cooling the exhaust gas with the collecting fluid in the dust collector 100. Accordingly, it is possible to suppress or prevent the suction unit 40 that generates a suction force for sucking the exhaust gas from being thermally damaged by the exhaust gas. Accordingly, durability and life of the suction unit 40 may be improved.

7 is a view showing the operation of a first injector, a second injector, and an auxiliary injector according to another embodiment of the present invention. Hereinafter, a dust collecting device according to another embodiment of the present invention will be described.

Referring to FIG. 7, the dust collecting device may further include an auxiliary injector 160. The auxiliary injector 160 is located in a region where the first injector 120 and the second injector 130 are difficult to inject the collecting fluid, and may inject the collecting fluid. That is, since the first injector 120 and the second injector 130 are disposed close to the inner wall of the discharge member 113, the collecting fluid can be easily injected from the inside of the discharge member 113 to the outer portion, The collecting fluid may not be sprayed to the center of the discharge member 113. Accordingly, the auxiliary injector 160 may be positioned inside the first injector 120 and the second injector 130 to position the auxiliary injector 160 in the center of the discharge member 113, and the auxiliary injector 160 May spray the collecting fluid from the center of the discharge member 113. Accordingly, the collecting fluid is injected as a whole into the discharge member 113, so that dust in the exhaust gas can be easily collected.

On the other hand, when the discharge member 113 is formed to be narrower in width from the front end to the rear end, the distance between the inner wall and the center of the discharge member 113 between the front end and the middle part of the discharge member 113 is relatively It is far, and a distance between the inner wall and the center of the discharge member 113 may be relatively close between the rear end and the middle part of the discharge member 113. Therefore, the first injector 120 and the second injector 130 disposed between the rear end and the middle of the discharge member 113 can inject the collecting fluid to the center of the discharge member 113, but the discharge member ( The first injector 120 and the second injector 130 disposed between the front end portion and the middle portion of 113) may not be able to inject the collecting fluid to the center of the discharge member 113. Accordingly, the auxiliary injector 160 may be disposed in a region between the front end and the middle of the discharge member 113. The auxiliary injector 160 includes a third line 161 and a third injection member 162.

The third line 161 may be formed in a pipe shape. A path through which the collecting fluid moves may be formed inside the third line 161. Accordingly, the collecting fluid moving inside the third line 161 may be supplied to the third injection member 162.

In addition, the third line 161 may be formed along the shape of the inner circumference of the discharge member 113. For example, the third line 161 may be formed in a circular ring shape. It may be supported by a support member (not shown) provided between the third line 161 and the inner wall of the discharge member 113.

In this case, the third line 161 is disposed between the first injector 120 and the second injector 130 and may have a diameter smaller than that of the first injector 120 or the second injector 130. Accordingly, the first injector 120 and the second injector 130 are disposed to surround the outer portion of the discharge member 113, and the third line 161 is disposed to surround the center of the discharge member 113. I can.

The third injection member 162 may be formed in a nozzle shape. The third injection member 162 may be installed on the third line. Accordingly, the collecting fluid moving inside the third line 161 may be supplied into the third spray member 162 and sprayed into the discharge member 113.

In addition, a plurality of third injection members 162 may be provided. The third injection members 162 may be disposed to be spaced apart from each other along a direction in which the third line 161 extends. Accordingly, the collecting fluid sprayed from the second spraying member 132 may be sprayed to the center of the discharge member 113.

Meanwhile, a plurality of auxiliary injectors 160 may be provided. The auxiliary injectors 160 may be spaced apart from each other in the front-rear direction. Accordingly, the auxiliary injector 160 may spray the collecting fluid at a plurality of positions inside the discharge member 113. At this time, some of the auxiliary injectors 160 may inject the collecting fluid in the moving direction of the exhaust gas, and some may inject the cooling water in a direction crossing the moving direction of the exhaust gas.

As described above, the auxiliary injector 160 may inject the collecting fluid into an area where the first injector 120 and the second injector 130 cannot inject the collecting fluid. Accordingly, the collecting fluid can be supplied to the entire inner region of the discharge member 113. Accordingly, dust in the exhaust gas can be more effectively collected.

Hereinafter, a dust collection method according to an embodiment of the present invention will be described.

A dust collection method according to an embodiment of the present invention is a method of collecting dust (or dust) in exhaust gas. The dust collection method is the process of introducing the exhaust gas into the dust collector, the process of first collecting the dust inside the exhaust gas inside the dust collector, the process of collecting the dust inside the exhaust gas second by spraying the collecting fluid in different directions inside the dust collector, And a process of discharging exhaust gas to the outside of the dust collector. At this time, as shown in FIGS. 1 and 2, the exhaust gas may be exhaust gas generated from a converter, and the dust collecting device 100 may be provided in a dust collecting facility.

First, exhaust gas may be introduced into the dust collecting device 100. The exhaust gas of the converter 5 may be sucked into the dust collecting device 100 by the suction force generated by the suction unit 40. Accordingly, the exhaust gas generated in the converter 5 may pass through the hood 10 and the cooling unit 20 and flow into the dust collector 100.

Then, dust in the exhaust gas may be collected by the dust collecting member 112 of the dust collecting device 100. For example, dust in the exhaust gas can be electrostatically collected. When power is applied to the electric dust collecting plate provided in the dust collecting member 112, dust may be collected by the electric dust collecting plate from exhaust gas passing through the dust collecting member 112.

However, if an explosion occurs in the process of blowing the molten iron, carbon monoxide and oxygen contained in the exhaust gas react inside the dust collecting member 112, or the operation of the dust collecting member 112 is stopped due to abnormality, etc., the dust collecting device 100 Accidents in which dust may be released may occur. Therefore, before the exhaust gas is discharged from the dust collector 110, a separate operation of collecting dust from the exhaust gas passing through the dust collecting member 112 may be performed using the collecting fluid. Thus, even if the dust collecting member 112 does not operate, dust may be collected by the collecting fluid inside the discharge member 113. In addition, even if the dust is blown toward the discharge member 113 by adding the electric dust collecting plate inside the dust collecting member 112, the dust is collected by the cooling fluid, so that the dust can be effectively blocked from flowing out of the dust collector 110.

The exhaust gas passing through the dust collecting member 112 moves to the discharge member 113, and the collecting fluid may be injected into the exhaust gas from the inside of the discharge member 113. Therefore, when the collecting fluid and the exhaust gas are brought into contact, the exhaust gas can be cooled by the collecting fluid, and dust can be attached to the collecting fluid and separated from the exhaust gas. The cooled and dust-removed exhaust gas passes through the discharge member 113, and the dust may fall to the lower portion of the discharge member 113 together with the collecting fluid.

At this time, the collecting fluid from the discharge member 113 may be sprayed in two different directions. That is, the first injector 120 may inject the collecting fluid in the moving direction of the exhaust gas inside the discharge member 113. Accordingly, the area in which the collecting fluid is injected and the area in which the exhaust gas moves may overlap each other. Accordingly, by increasing the size of the area in which the collecting fluid and the exhaust gas can contact, the collecting fluid can easily collect dust in the exhaust gas.

In addition, inside the discharge member 113, the second injector 130 may spray the collecting fluid in a direction crossing the moving direction of the exhaust gas. Accordingly, since the direction in which the collecting fluid is injected and the direction in which the exhaust gas moves are different, the collecting fluid can reduce the moving speed of the exhaust gas. Accordingly, the time during which the exhaust gas stays inside the discharge member 113 increases, and dust can be more effectively collected with the collecting fluid.

Meanwhile, the process of injecting the collection fluid in the direction in which the exhaust gas moves and the process of injecting the collection fluid in the direction crossing the direction in which the exhaust gas moves may be performed together. Accordingly, the moving speed of the exhaust gas is reduced with the collecting fluid injected in a direction crossing the moving direction of the exhaust gas, so that the time for the collecting fluid injected in the moving direction of the exhaust gas to contact the exhaust gas can be increased. Accordingly, by increasing the amount of exhaust gas in contact with the collecting fluid injected in the moving direction of the exhaust gas and the time to contact the exhaust gas, dust can be effectively collected from the exhaust gas.

At this time, while blowing is performed in the converter 5, the collecting fluid may be sprayed from the inside of the discharge member 113. Therefore, even if a problem occurs in the dust collection operation during blowing, the dust can be prevented from leaking out of the dust collection device 100 by using the collecting fluid.

Then, the dust is removed and the exhaust gas whose temperature is reduced may be discharged to the outside of the dust collector 100. Thereafter, the exhaust gas may pass through the suction unit 40 and be distributed from the distribution unit 60 to the storage unit 80 or the discharge unit 70 according to the carbon monoxide concentration.

Since dust has been effectively removed from the exhaust gas, when the exhaust gas stored in the storage unit 80 is supplied to other facilities through a pipe or nozzle, it is possible to prevent the inside of the pipe or nozzle from being blocked by dust. In addition, it is possible to prevent environmental pollution by preventing the dust contained in the exhaust gas from being released into the atmosphere through the discharge unit 70.

On the other hand, since the temperature of the exhaust gas is reduced by the collecting fluid, it is possible to prevent damage to the suction unit 40 or the like due to the heat of the exhaust gas. Accordingly, the durability and life of the suction unit 40 can be extended.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims described below, but also by the claims and equivalents.

100: dust collector 110: dust collector
111: inlet member 112: dust collecting member
113: discharge member 120: first injector
130: second injector 140: collector
160: auxiliary sprayer

Claims (16)

A dust collector in which a path through which the exhaust gas moves is formed so as to collect dust in the exhaust gas; And
Including; a plurality of injectors installed to spray the collecting fluid for collecting dust inside the dust collector, and capable of injecting the collecting fluid in different directions,
The injector includes a plurality of first injectors installed to inject the collecting fluid in the moving direction of the exhaust gas inside the dust collector,
The first injector,
A first line disposed to surround at least a portion of the inner circumference of the discharge member and forming a path through which the collecting fluid moves, and
A plurality of first nozzles installed on the first line, and second nozzles installed on the first line at an angle different from the first nozzle so as to spray the collecting fluid toward an area different from the first nozzle Dust collecting device comprising the first injection members. The method according to claim 1,
The dust collector may include an inlet member through which exhaust gas can be introduced, a dust collecting member connected to the inlet member and capable of electrostatically collecting dust in the exhaust gas, and a dust collecting member connected to the dust collecting member and capable of discharging the exhaust gas passing through the dust collecting member. Including a discharge member,
The plurality of injectors are dust collecting devices installed on the discharge member. The method according to claim 2,
The injector,
A second injector spaced apart from the first injector and installed to inject the collecting fluid in a direction crossing the moving direction of the exhaust gas inside the dust collector. The method according to claim 3,
The first injector and the second injector is provided with a plurality of dust collectors arranged alternately with each other. delete delete The method according to claim 3,
An angle between the first nozzle and the second nozzle is 10 degrees or more and 30 degrees or less. The method according to claim 3,
The second injector,
A second line disposed to surround at least a portion of the inner circumference of the discharge member and defining a path through which the collecting fluid moves; And
And a plurality of second injection members installed on the second line so as to spray the collecting fluid toward the center of the discharge member. The method according to claim 3,
A dust collecting device further comprising an auxiliary injector installed to inject the collecting fluid from inside the first injector and the second injector. The method according to claim 9,
The discharge member is formed to have a narrower width from one side to the other side,
The auxiliary injector is a dust collecting device disposed in a region between the middle portion and one side of the discharge member. The method according to claim 9,
The auxiliary injector,
A third line disposed in the space between the first injector and the second injector and defining a path through which the collecting fluid moves; And
And a plurality of third injection members installed on the third line so as to spray the collecting fluid into the discharge member. The method according to claim 3,
A slope is formed between one side and the other side of the discharge member,
A dust collecting device further comprising a collector connected to a lower portion of one side of the discharge member so as to collect the dust collected to one side of the discharge member and the collecting fluid. A process of introducing exhaust gas into the dust collector;
A process of first collecting dust in the exhaust gas inside the dust collector;
Secondly collecting dust in the exhaust gas by spraying collecting fluids in different directions inside the dust collecting device; And
Includes; discharging exhaust gas to the outside of the dust collecting device,
The process of injecting the collection fluid in different directions inside the dust collector includes a process of injecting the collection fluid along the movement direction of the exhaust gas at a plurality of locations inside the dust collector,
The process of spraying the collecting fluid at a plurality of locations inside the dust collecting device,
The process of spraying the collecting fluid with a first nozzle installed in a first line arranged to surround at least a part of the inner circumference of the dust collecting device, and
And spraying a collecting fluid toward an area different from the first nozzle with a second nozzle installed on the first line at an angle different from the first nozzle. The method according to claim 13,
The process of spraying the collecting fluid in different directions inside the dust collecting device,
Dust collection method further comprising a; process of injecting the collecting fluid in a direction crossing the movement direction of the exhaust gas. The method according to claim 13,
The process of injecting the collecting fluid along the moving direction of the exhaust gas includes a process of separating the dust from the exhaust gas by contacting the collecting fluid with the dust, and the process of dropping the dust together with the collecting fluid, and
The process of injecting the collection fluid in a direction crossing the movement direction of the exhaust gas includes a process of reducing a movement speed of the exhaust gas. The method according to any one of claims 13 to 15,
The exhaust gas includes exhaust gas generated from a converter,
The process of first collecting dust in the exhaust gas inside the dust collecting device includes a process of collecting dust in the exhaust gas with electricity.

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