CN107921345B - Exhaust gas purification device - Google Patents
Exhaust gas purification device Download PDFInfo
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- CN107921345B CN107921345B CN201680047405.8A CN201680047405A CN107921345B CN 107921345 B CN107921345 B CN 107921345B CN 201680047405 A CN201680047405 A CN 201680047405A CN 107921345 B CN107921345 B CN 107921345B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
Abstract
The present invention relates to an exhaust gas purification apparatus, comprising: a first delivery pipe portion for inducing the exhaust gas containing the impurities in a first direction; an impurity storage section formed on a bottom surface of the first delivery pipe section and configured to store impurities contained in the exhaust gas; a second conveying pipe part which is communicated with the purified gas outlet formed on the side surface of the first conveying pipe part and is used for guiding the purified gas with impurities separated away to a second direction; and a first baffle plate installed to protrude into the first delivery pipe portion and inducing a rapid change of an air flow direction of the exhaust gas flowing into the first delivery pipe portion to a second direction of the second delivery pipe portion; the first delivery tube section includes: a first inflow portion installed at a position relatively close to the second conveying pipe portion; and a second inflow portion installed adjacent to the first inflow portion and installed at a position relatively distant from the second conveying pipe portion.
Description
Technical Field
The present invention relates to an exhaust gas purifying apparatus, and more particularly, to an exhaust gas purifying apparatus and a baffle plate thereof for use in an apparatus which must remove various ashes or impurities such as suspended matters generated based on the use of fossil fuel.
Background
In general, fossil fuels such as coal, heavy oil, and natural gas are burned in combustion facilities such as thermal power stations, combustion furnaces, and industrial boilers to generate energy. Such fossil fuels, when burned, can contain a large amount of impurities including fines generated after combustion, Ash in solid form (Ash), fuel material in an unburnt state, nitrogen bonds, and carbon bonds. If the gas containing such impurities is discharged into the atmosphere, it may cause atmospheric pollution, and may be connected to a combustion apparatus as the case may be, which may also have an influence on an apparatus for treating the gas generated at the time of combustion. For example, in a selective catalytic reduction process as a smoke exhaust technology for harmlessly treating harmful substances such as NOx, CO, Dioxine, etc. generated in various combustion apparatuses by using a catalyst, such impurities cover the catalytic layer, thereby remarkably reducing the function and characteristics of the catalytic layer. Therefore, a technique for separating and removing impurities contained in the combustion gas is required.
Disclosure of Invention
Technical problem
The invention provides a waste gas purifying device, which can improve the impurity separation performance by inducing the waste gas containing impurities to the direction of an impurity containing part, can promote the separation of the waste gas and the impurities by installing a first baffle plate and a second baffle plate which can induce the rapid change of the air flow direction, and can accelerate the direction conversion to the air flow discharge direction by using an air flow inducing and guiding groove.
Means for solving the problems
An exhaust gas purifying apparatus relating to the technical idea of the present invention for solving the problems may include: a first delivery pipe portion for inducing the exhaust gas containing the impurities in a first direction; an impurity storage section formed on a bottom surface of the first delivery pipe section and configured to store impurities contained in the exhaust gas; a second conveying pipe part which is communicated with the purified gas outlet formed on the side surface of the first conveying pipe part and is used for guiding the purified gas with impurities separated away to a second direction; and a first baffle plate installed to protrude into the first delivery pipe portion and inducing a rapid change of an air flow direction of the exhaust gas flowing into the first delivery pipe portion to a second direction of the second delivery pipe portion; the first delivery tube section includes: a first inflow portion installed at a position relatively close to the second conveying pipe portion; and a second inflow portion installed adjacent to the first inflow portion and installed at a position relatively distant from the second conveying pipe portion.
The first baffle plate may have a front end facing the impurity storage portion and may protrude in a downwardly inclined manner at a first downward angle with respect to a horizontal plane, and a rear end fixed above the purge gas outlet.
The first downward angle may be 30 to 50 degrees.
The first baffle plate may have a first protrusion length of 33% to 42% or more of a first directional distance from a connection point of the purge gas discharge port to a first extension point on the impurity storage unit, the first protrusion length being obliquely protruded toward the impurity storage unit.
The second delivery pipe portion may have a flow path height, a first passage distance being equal to or greater than the flow path height, the flow path height being a height of a flow path for discharging the purge gas, the first passage distance being a distance obtained by subtracting the first projection length from the first orientation distance.
The first delivery duct portion further includes a dividing wall that can separate the first inflow portion and the second inflow portion.
The exhaust gas purification apparatus further includes a second baffle installed to protrude toward the inside of the first delivery pipe portion and inducing a rapid change of an air flow direction of the exhaust gas flowing into the first delivery pipe portion toward a second direction of the second delivery pipe portion.
The second baffle plate may have a front end facing the impurity-containing part and may protrude in a downwardly inclined manner at a second downward angle based on a horizontal plane, and a rear end fixed to a lower end of the partition wall.
The second downward angle may be 30 to 50 degrees.
The second baffle plate may have a second protrusion length that is inclined toward the impurity storage portion and protrudes from a connection point of the partition wall to a second extension point on the impurity storage portion, the second protrusion length being 33% to 42% or more of a second orientation distance.
The impurity housing unit is a funnel-shaped ash bucket that is recessed downward, and has a guide flat surface portion formed so that the surfaces of the first conveying pipe portion and the impurity housing unit are connected to form a flat surface.
Effects of the invention
According to the embodiment of the present invention described above, the exhaust gas purification apparatus can improve the separation performance of separating the impurities contained in the exhaust gas into the impurity housing portion by a rapid change in the flow direction of the exhaust gas.
Further, exhaust gas sucked at a plurality of positions can be purified by one apparatus, and efficiency can be improved by only changing the angle or length of the baffle plate without requiring a separate apparatus or changing the manufacturing method, resulting in simple equipment or easy manufacturing. Of course, the scope of the present invention is not limited to this effect.
Drawings
Fig. 1 is a perspective view illustrating an exhaust gas purifying apparatus according to an embodiment of the present invention.
Fig. 2 to 7 are diagrams illustrating exhaust gas purification devices according to various embodiments of the present invention.
Fig. 8 is a diagram illustrating an operation state of the exhaust gas purifying apparatus of fig. 1.
Fig. 9 is a comparison table showing the impurity removal rate and the pressure difference based on the baffle angle of the exhaust gas purification apparatus of fig. 2.
Fig. 10 is a comparison table showing the impurity removal rate and the pressure difference based on the length of the baffle plate of the exhaust gas purification apparatus of fig. 3.
Detailed Description
Best mode for carrying out the invention
The embodiments of the present invention are provided so that those skilled in the art having ordinary knowledge in the art can more fully understand the present invention, and the following embodiments may be modified into various forms without limiting the scope of the present invention. Rather, this embodiment is provided so that this disclosure will be thorough and complete, and will fully convey the technical concept of the invention to those skilled in the art. Also, the thickness or size of each layer in the drawings is exaggerated for convenience of explanation.
Fig. 1 is a perspective view illustrating an exhaust gas purifying apparatus 100 according to an embodiment of the present invention.
As shown in fig. 1, the impurity storage device may include a first transfer pipe portion 10, a second transfer pipe portion 20, an impurity storage portion 30, and a first baffle 40.
As shown in fig. 1, the first delivery pipe portion 10 may be formed in a shape that can guide the exhaust gas G1 containing the impurities 1 in the first direction. For example, the first delivery pipe portion 10 is configured to guide the exhaust gas G1 containing the impurity 1 in the first direction (downward direction in fig. 1), the impurity 1 may be powder generated after combustion, Ash (Ash) in a solid state, fuel in an unburnt state, unburnt non-combustible matter, nitrogen bonds, carbon bonds, or the like, and the first delivery pipe portion 10 may be formed into a delivery pipe having various shapes such as a cubic cylinder, a pipe, or the like.
As shown in fig. 1, the first transporting duct portion 10 may include a first inflow portion 11 installed at a relatively close position from the second transporting duct portion 20, and a second inflow portion 12 installed adjacent to the first inflow portion 11 and at a relatively far position from the second transporting duct portion 20. For example, the first delivery duct portion 10 may further include a partition wall 50, and the partition wall 50 may serve to partition the first inflow portion 11 and the second inflow portion 12.
For example, as shown in fig. 1, the first delivery pipe portion 10 may be formed by combining a plurality of delivery pipes connected at different positions, or may be formed by separating one delivery pipe so that the impurities 1 can be more effectively purified.
The partition wall 50 may be formed by combining a plurality of ducts, as shown in fig. 1, or may be installed for separating ducts. The partition wall 50 may be installed in the form of a plate, and may be installed in the shape of a polygonal pillar extending in a lateral direction in order to increase the inflow pressure of the inflow exhaust gas G1. For example, as shown in fig. 1, the partition wall 50 is installed in the form of a pentagon pillar lying horizontally in a lateral direction, and the lower inflow part is formed to be narrower and the pressure of the inflowing exhaust gas G1 may be higher than the inflow pipes formed at the upper parts of the first and second inflow parts 11 and 12 into which the exhaust gas G1 flows. As a result, the impurity 1 loses its momentum due to the rapidly decreasing pressure in the relatively wide impurity storage portion 30, and the inflow exhaust gas G1 can be purified by the impurity storage portion 30 because of the rapidly decreasing flow velocity and weight.
As shown in fig. 1, the first inflow portion 11 may be installed at a position closer to the second delivery pipe portion 20, and the exhaust gas G1 flowing in the first inflow portion 11 may flow more rapidly toward the second delivery pipe portion 20, but the direction of the flow of gas is changed based on a later-described partition wall and flows toward the second delivery pipe portion 20.
As shown in fig. 1, the second inflow portion 12 may be installed on the second delivery pipe portion 20 at a position farther than the first inflow portion 11, and the exhaust gas G1 flowing in the second inflow portion 12 flows toward the second delivery pipe portion 20 relatively more slowly than the exhaust gas G1 flowing in the first inflow portion, but may be purified and flow toward the second delivery pipe portion 20 based on inertia or centrifugal force due to a partition wall described later.
Although not shown, the first inflow portion 11 and the second inflow portion 12 may be formed by coupling a plurality of transfer pipes connected at different positions.
As shown in fig. 1, the second duct portion 20 may communicate with a purge gas discharge port H formed on a side surface of the first duct portion 10, and may induce a purge gas G2 from which the impurities 1 are separated in a second direction (rearward in fig. 1). For example, the second delivery tube portion 20 may be in a cubic cylindrical shape, or may be in various shapes such as a cylindrical shape and a tubular shape.
Here, the second direction may be a direction in which the exhaust gas G1 flowing in through the first delivery pipe portion 10 flows into a treatment device for treating harmful components of the exhaust gas G1 before being finally discharged to the outside. In this case, the treatment device may be a selective catalytic reduction device, and the exhaust gas G1 flowing in the second direction may flow into a catalytic layer constituting the selective catalytic reduction device.
As shown in fig. 1, the impurity housing portion 30 is formed on the bottom surface of the first conveying pipe portion 10 and can house the impurities 1 contained in the exhaust gas G1 that is induced to fall in the first direction. The impurity housing part 30 may be a funnel-shaped hopper (hopper) that is recessed downward, and may stack the impurities 1 downward.
As shown in fig. 1, the first baffle 40 is installed in a convex manner inside the first delivery pipe portion 10, and induces the exhaust gas G1 flowing into the first delivery pipe portion 10 to abruptly change its flow direction to a second direction in the direction of the second delivery pipe portion.
As shown in fig. 1, the first baffle plate 40 may be installed to protrude toward the inside of the first delivery pipe portion 10 so that the exhaust gas G1 of the first delivery pipe portion 10 passes through the impurity storage part 30 to be diverted toward the second delivery pipe portion 20. Also, the first baffle plate 40 may be formed with a circular surface in order to facilitate the direction change of the exhaust gas G1 but is not necessarily limited thereto.
As shown in fig. 1, the front end of the first baffle plate 40 protrudes downward toward the impurity containing section 30 at a first downward angle a1 with reference to the horizontal plane, and the rear end of the first baffle plate 40 can be fixed above the purge gas outlet H.
As shown in fig. 1, the first baffle plate 40 can induce the exhaust gas G1 flowing in the first direction through the first delivery pipe portion 10 to sharply change its direction toward the second delivery pipe portion 20. That is, after the exhaust gas G1 flowing in through the first conveying pipe portion 10 flows in the first direction (downward direction in fig. 1), the direction of the gas flow is abruptly changed toward the second direction, which is the direction of the second conveying pipe portion 20, by the first baffle plate 40. When such a sudden change in the direction of the flow occurs, the impurities 1 having a constant mass contained in the exhaust gas G1 tend to move continuously in the first direction due to inertia (or centrifugal force), and cannot move to the impurity housing unit 30 in response to such a sudden change in the direction of the flow, and can be separated from the exhaust gas G1.
Therefore, most of the impurities 1 can be accommodated in the impurity accommodating portion 30 by the rapid change in the gas flow induced by the first baffle plate 40, and the purified gas G2 from which only the impurities 1 are removed can be discharged to the outside through the second delivery pipe portion 20.
Fig. 2 to 7 are diagrams illustrating exhaust gas purification devices 200, 300, 400, 500, 600, and 700 according to various embodiments of the present invention.
As shown in fig. 2, the first baffle plate 40 of the exhaust gas purification apparatus 200 according to another embodiment of the present invention may be fixed above the purified gas discharge port H so as to face the impurity storage 30 and be installed to be inclined downward with respect to a horizontal plane. For example, in order to discharge the exhaust gas G1 flowing into the first transfer pipe portion 10 to the second transfer pipe portion 20, the first baffle plate 40 may be installed so that the inflow of the exhaust gas G1 is not obstructed in the first transfer pipe portion 10 and the discharge of the purge gas G2 is not obstructed in the second transfer pipe portion 20, and the first baffle plate 40 may be installed to be inclined at the first downward angle a1 with respect to a horizontal plane, thereby improving the purge efficiency to the maximum. For example, when the first downward angle a1 is a certain angle or more or less, the inflow port is widened and the discharge port is narrowed, so that an excessive pressure difference between the inflow port and the discharge port may cause a decrease in purification efficiency, and thus, the first downward angle a1 may be 30 to 50 degrees.
As shown in fig. 3, the first baffle plate 40 of the exhaust gas purifying apparatus 300 according to another embodiment of the present invention may be installed to protrude a certain distance. For example, the length of the first baffle plate 40 that protrudes obliquely toward the impurity containing part 30 may be the first protruding length B1. The imaginary extension point of the first baffle plate 40 located on the impurity containing section 30 may be the first extension point 41, and the distance from the connection point of the first baffle plate 40 and the purge gas discharge port H to the first extension point 41 may be the first orientation distance C1.
As shown in fig. 3, the first protrusion length B1 may be more than 33% to 42% of the first orientation distance C1 in order to maximize the purification efficiency of the first baffle plate 40. For example, if the first protrusion length B1 is too long, the inflow port and the exhaust port are narrowed, the discharge of the foreign substances 1 is slowed, and the purification efficiency is lowered, and if the first protrusion length B1 is too short, the rotational force of the foreign substances 1 is lowered, and the purification efficiency is lowered.
As shown in fig. 3, the second transfer duct portion 20 may include a flow path height E, and a distance when the exhaust gas G1 flowing in the first transfer duct portion 10 flows in and passes through the first baffle 40 may be the flow path height E or more. For example, the first passing distance D1 of the first orientation distance C1 minus the first projection length B1 may be the flow path height E or greater.
That is, the first protrusion length B1 is formed in such a manner that the first passing distance D1 through which the exhaust gas G1 flowing in the first delivery pipe portion 10 passes is equal to or greater than the flow path height E formed in the second delivery pipe portion 20, so that the purification efficiency can be maximally improved.
As shown in fig. 4, the exhaust gas purifying apparatus 400 according to another embodiment of the present invention may further include a second baffle plate 60, wherein the second baffle plate 60 is installed to protrude toward the first inflow portion 11, and induces the exhaust gas G1 flowing into the first inflow portion 11 to sharply change its flow direction toward the second direction of the second delivery pipe portion 20.
As shown in fig. 4, the second baffle 60 may be fixed below the partition wall 50 and installed to be inclined downward with respect to a horizontal plane toward the impurity storage part 30. For example, in order to discharge the exhaust gas G1 flowing into the first transfer pipe portion 10 to the second transfer pipe portion 20, the second baffle plate 60 may be installed so as not to obstruct the inflow of the exhaust gas G1 in the first transfer pipe portion 10 and not to obstruct the discharge of the purge gas G2 in the second transfer pipe portion 20, and may be installed to be inclined at the second downward angle a2 with respect to a horizontal plane, thereby maximizing the purge efficiency. For example, when the second downward angle a2 is equal to or greater than a certain angle, the inflow port is widened and the discharge port is narrowed, and the pressure difference between the inflow port and the discharge port is excessively large, which may reduce the purification efficiency, and thus, the second downward angle a2 may be 30 to 50 degrees.
As shown in fig. 6, the second baffle 60 of the exhaust gas purifying apparatus 600 according to another embodiment of the present invention may be installed to protrude a certain distance. For example, the length of the second baffle plate 60 that protrudes obliquely toward the impurity containing part 30 may be the second protruding length B2. Further, the virtual extension point of the second baffle plate 60 located on the impurity containing section 30 may be the second extension point 42, and the distance from the connection point of the second baffle plate 60 and the purge gas discharge port H to the second extension point 42 may be the second orientation distance C2.
As shown in fig. 6, the second baffle plate 60 may have a second protrusion length B2 of 33% to 42% or more of the second orientation distance C2 in order to maximize the purification efficiency. For example, if the second protrusion length B2 is too long, since the inflow port and the discharge port are narrowed, the discharge of the foreign substances 1 is slowed, and the purification efficiency is lowered, and if the second protrusion length B2 is too short, the rotational force of the foreign substances 1 becomes small, and the purification efficiency is lowered.
As shown in fig. 7, the impurity housing part 30 of the exhaust gas purifying apparatus 700 according to another embodiment of the present invention is a funnel-shaped ash bucket that is recessed downward, and a guide flat part 70 whose surface can be formed flat may be formed between the first conveying pipe part 10 and the impurity housing part 30.
As shown in fig. 7, the induced flat part 70 serves to make the direction of the air flow change sharply and is induced to a direction different from the first direction, and particularly, a sharp vortex can be induced more easily by forming a kind of inclined surface. The flow velocity of the induced flat portion 70 in the impurity housing portion 30 is significantly reduced, but the induced flat portion 70 and the baffle plates 40 and 60 generate a rapid vortex flow, and the impurity 1 falls toward the impurity housing portion 30 by a centrifugal force.
On the contrary, the inducing plane portion 70 is formed as a curved surface, and the distance from the first baffle plate 40 to the inducing plane portion 70 is relatively increased, so that the first baffle plate 40 can be increased by a length corresponding to the distance difference, and the air flow direction converting effect based on the first baffle plate 40 can be improved when the length of the first baffle plate 40 is increased.
Fig. 8 is a diagram illustrating an operation state of the exhaust gas purification apparatus 100 of fig. 1.
As shown in fig. 8, the exhaust gas purification apparatus 100 induces the exhaust gas G1 in the first direction in the first delivery pipe portion 10 including the first inflow portion 11 and the second inflow portion 12, and the flow direction is abruptly (suddenly) changed to the second direction in the direction of the second delivery pipe portion 20 by the first baffle plate 40 through the first delivery pipe portion 10.
At this time, the impurities 1 are stacked by the impurity storage part 30 of the hopper (hopper) and the purified gas G2 from which only the impurities 1 are removed is discharged to the outside by the second delivery pipe part 20.
In order to facilitate understanding of the present invention, experimental examples to which the above technical ideas are applied will be described below. The following experimental examples are only for the purpose of facilitating understanding of the present invention, and the present invention is not limited to the following experimental examples.
[ Experimental example ]
In this experiment, in order to confirm the change in the impurity removal rate due to the change in the angle of the baffle plate, the same conditions were used for all the descriptions, and a difference in the change in the angle of the baffle plate or the length of the baffle plate was confirmed.
Fig. 9 is an explanatory result of the first experiment.
The first experiment was conducted on the changes in flow rate and pressure based on the angles of the baffles, which were 30 degrees, 38 degrees, 45 degrees, 60 degrees, and 75 degrees with respect to the horizontal plane. In the first experiment, type 1 was an experiment in which the angle of the baffle was 30 degrees, type 2 was 38 degrees, type 3 was 45 degrees, type 4 was 60 degrees, and type 5 was 75 degrees.
Table 1 is a list showing the average pressure difference between the inflow port and the exhaust port of experiment 1.
TABLE 1
In table 1, the first inlet is an inlet installed at a position distant from the discharge port, and the second inlet is an inlet installed at a position adjacent to the discharge port.
As can be seen from table 1, as the baffle angle gradually decreased downward from type 1(30 degrees) to type 5(75 degrees), the average pressure of the inflow port and the pressure of the discharge port gradually decreased, the pressure difference between the inflow port and the discharge port decreased in the range from type 1(30 degrees) to type 3(45 degrees) and increased again, and the pressure difference was the greatest in type 5(75 degrees).
It can be seen that the baffles can be angled in order to maintain a pressure differential between the inlet and outlet ports.
Table 2 is a table showing the removal rate of experiment 1 based on the size of impurities.
TABLE 2
In table 2, the first inlet is an inlet installed at a position distant from the outlet, and the second inlet is an inlet installed at a position adjacent to the outlet.
As shown in Table 2, the removal rate was measured by changing the baffle angle when the sizes of the impurities were 100 μm, 140 μm and 200 μm. From this, it is understood that the impurity removal rate gradually decreases as the baffle angle gradually decreases from type 1(30 degrees) to type 5(75 degrees), and the average removal rates from type 1(30 degrees) to type 3(45 degrees) are all 70% or more.
Fig. 9 is a comparison table showing the impurity removal rate and the pressure difference based on the baffle angle of the exhaust gas purification apparatus 200 of fig. 2.
As shown in fig. 9, the baffle plate is formed in a downward direction from type 1(30 degrees) to type 5(75 degrees), the pressure difference (△ P) between the inlet and outlet ports is gradually increased, and the removal rate is gradually decreased when the sizes of the impurities are 100 μm and 140 μm and 200 μm, so that the pressure of the inlet and outlet ports is small based on the angle of the baffle plate, and the installation angle of the baffle plate is 30 degrees to 50 degrees, thereby increasing the removal rate of the impurities.
Fig. 10 is an explanatory result of the second experiment.
The second experiment was an experiment of the change in flow velocity and pressure based on the length of the baffle, by varying the proportion of the length of the baffle relative to the directional distance. The orientation distance is the distance from the connection point of the baffle plate and the purge gas outlet to the virtual extension point of the baffle plate. The ratio of the baffle length to the orientation distance is 1: the 0.54 experiment was of type 6, 1: 0.49 is type 7, 1: 0.43 is type 8, 1: 0.38 is type 9, 1: 0.32 is type 10 and 1: 0.27 is type 11.
Table 3 is a list showing the average pressure difference between the inlet and outlet ports of experiment 2.
TABLE 3
In table 3, the first inlet is an inlet installed at a position distant from the outlet, and the second inlet is an inlet installed at a position adjacent to the outlet.
As shown in table 3, the average pressure of the inlet and the pressure of the outlet decreased as the length of the baffle became shorter from type 6 (1: 0.54) to type 11 (1: 0.27), and the pressure difference between the inlet and the outlet also decreased as the length of the baffle became shorter from type 6 (1: 0.54) to type 11 (1: 0.27).
Table 4 is a table showing the removal rate based on the size of impurities in experiment 1.
TABLE 4
In table 4, the first inlet is an inlet attached to a position distant from the outlet, and the second inlet is an inlet attached to a position adjacent to the outlet.
As shown in Table 2, the removal rate was tested by changing the length of the baffle plate when the impurity size was 100 μm, 140 μm, 200 μm. From this, it is found that the impurity removal rate is highest in the type 6 (1: 0.54) when the impurity size is 100 μm.
Further, when the impurity size was 200 μm, the removal rate was high in type 6 (1: 0.54), type 7 (1: 0.49), type 8 (1: 0.43) and type 9 (1: 0.38), and relatively low in type 10 (1: 0.32) and type 11 (1: 0.27) in which the length of the baffle plate was short.
Fig. 10 is a comparison table showing the impurity removal rate and the pressure difference based on the length of the baffle plate of the exhaust gas purification apparatus 300 of fig. 3.
As shown in FIG. 10, as the length of the baffle plate becomes shorter from type 6 (1: 0.54) to type 11 (1: 0.27), the pressure difference between the inlet and outlet ports (△ P) and the removal rate decreased at impurity sizes of 100 μm, 140 μm and 200 μm.
Thus, if the length of the baffle plate becomes short, the pressure difference between the inflow port and the outflow port is reduced and it is known that the removal rate is lowered, and therefore, in order to form a small pressure difference between the inflow port and the outflow port and maintain a high impurity removal rate, the ratio of the length of the baffle plate with respect to the orientation distance is set to 1: more effective is 0.38 or more.
The invention has been described with reference to the embodiments shown in the drawings, which are intended to be illustrative only, and various modifications and equivalent other embodiments will be apparent to those skilled in the art based on the teachings herein. Therefore, the true technical scope of the present invention should be determined based on the technical idea of the appended claims.
Industrial applicability
According to the embodiment of the present invention, the exhaust gas purification apparatus can improve the separation performance of separating the impurities contained in the exhaust gas into the impurity housing unit by the rapid change of the flow direction of the exhaust gas.
Further, exhaust gas sucked at a plurality of positions can be purified by one apparatus, efficiency can be improved only by changing the angle or length of the baffle plate without a separate apparatus or a manufacturing method, and manufacturing cost of the exhaust gas purifying apparatus can be reduced with the effect of simple equipment or easy manufacturing.
Claims (9)
1. An exhaust gas purifying apparatus, characterized in that the apparatus comprises:
a first delivery pipe portion for inducing the exhaust gas containing the impurities in a first direction;
an impurity storage section formed on a bottom surface of the first delivery pipe section and configured to store impurities contained in the exhaust gas;
a second conveying pipe part which is communicated with the purified gas outlet formed on the side surface of the first conveying pipe part and is used for guiding the purified gas with impurities separated away to a second direction; and
a first baffle plate installed to protrude into the first delivery pipe portion and inducing a rapid change of an air flow direction of the exhaust gas flowing into the first delivery pipe portion to a second direction in a direction of the second delivery pipe portion;
the first delivery tube section includes: a first inflow portion installed at a position relatively close to the second conveying pipe portion;
a second inflow portion installed adjacent to the first inflow portion and installed at a relatively distant position from the second conveying pipe portion; and
a dividing wall which can separate the first inflow part and the second inflow part; and the number of the first and second electrodes,
the exhaust gas purification apparatus further includes:
and a second baffle plate installed to protrude toward an inside of the second inflow portion, and inducing a rapid change of an airflow direction of the exhaust gas flowing into the second inflow portion toward a second direction of the second delivery pipe portion.
2. An exhaust gas purifying apparatus as set forth in claim 1,
the first baffle plate has a front end surface projecting toward the impurity housing portion and inclined downward at a first downward angle with respect to a horizontal plane, and a rear end fixed above the purified gas discharge port.
3. An exhaust gas purifying apparatus as set forth in claim 2,
the first downward angle is 30 to 50 degrees.
4. An exhaust gas purifying apparatus as set forth in claim 2,
and a first baffle plate having a first protrusion length of 33% to 42% of a first directional distance from a connection point of the purge gas discharge port to a first extension point on the impurity accommodating portion, the first protrusion length being obliquely protruded toward the impurity accommodating portion.
5. An exhaust gas purifying apparatus as set forth in claim 4,
the second delivery pipe portion has a flow path height, a first passage distance being equal to or greater than the flow path height, the flow path height being a height for discharging the purge gas flow path, the first passage distance being a distance obtained by subtracting the first projection length from the first orientation distance.
6. An exhaust gas purifying apparatus as set forth in claim 1,
the front end of the second baffle plate protrudes towards the impurity containing part and inclines downwards at a second downward angle based on the horizontal plane, and the rear end of the second baffle plate is fixed at the lower end part of the partition wall.
7. An exhaust gas purifying apparatus as set forth in claim 6,
the second downward angle is 30 to 50 degrees.
8. An exhaust gas purifying apparatus as set forth in claim 6,
and a second protrusion length of the second baffle plate, which protrudes obliquely toward the impurity-containing part, is 33% to 42% of a second directional distance from a connection point of the partition wall to a second extension point on the impurity-containing part.
9. An exhaust gas purifying apparatus as set forth in claim 1,
the impurity containing part is a funnel-shaped ash bucket which is sunken downwards, an inducing plane part is formed between the first conveying pipe part and the impurity containing part, and a plane is formed on the surface of the inducing plane part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2015-0128449 | 2015-09-10 | ||
| KR1020150128449A KR101781096B1 (en) | 2015-09-10 | 2015-09-10 | Cleaning apparatus of exhaust gas |
| PCT/KR2016/009570 WO2017043793A1 (en) | 2015-09-10 | 2016-08-29 | Exhaust gas purifying apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107921345A CN107921345A (en) | 2018-04-17 |
| CN107921345B true CN107921345B (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680047405.8A Active CN107921345B (en) | 2015-09-10 | 2016-08-29 | Exhaust gas purification device |
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| Country | Link |
|---|---|
| KR (1) | KR101781096B1 (en) |
| CN (1) | CN107921345B (en) |
| WO (1) | WO2017043793A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6491734B1 (en) * | 1999-11-23 | 2002-12-10 | Hyundai Motor Company | Air cleaner for internal combustion engine with internally formed air inlet pipe |
| CN102822468A (en) * | 2011-03-18 | 2012-12-12 | 株式会社小松制作所 | Exhaust gas purification device |
| CN104470616A (en) * | 2012-07-16 | 2015-03-25 | 美泰真科技有限公司 | Exhaust gas purification apparatus and baffle thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6290742B1 (en) * | 1999-12-23 | 2001-09-18 | Durr Industries, Inc. | Baffle system for separating liquid from a gas stream |
| JP2003265378A (en) | 2002-03-17 | 2003-09-24 | Masaaki Kimura | Dust separator for separating dust by applying physical force such as inertial force, centrifugal force, gravity or the like to be used for vacuum cleaner or dust collector |
| KR100624823B1 (en) * | 2004-11-10 | 2006-09-18 | 엘지전자 주식회사 | Baffle Filter |
| JP2007054371A (en) | 2005-08-25 | 2007-03-08 | Masaaki Kimura | Vacuum cleaner which separates dust by physical force such as inertia force, centrifugal force, gravity |
-
2015
- 2015-09-10 KR KR1020150128449A patent/KR101781096B1/en active IP Right Grant
-
2016
- 2016-08-29 CN CN201680047405.8A patent/CN107921345B/en active Active
- 2016-08-29 WO PCT/KR2016/009570 patent/WO2017043793A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6491734B1 (en) * | 1999-11-23 | 2002-12-10 | Hyundai Motor Company | Air cleaner for internal combustion engine with internally formed air inlet pipe |
| CN102822468A (en) * | 2011-03-18 | 2012-12-12 | 株式会社小松制作所 | Exhaust gas purification device |
| CN104470616A (en) * | 2012-07-16 | 2015-03-25 | 美泰真科技有限公司 | Exhaust gas purification apparatus and baffle thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170030920A (en) | 2017-03-20 |
| WO2017043793A1 (en) | 2017-03-16 |
| CN107921345A (en) | 2018-04-17 |
| KR101781096B1 (en) | 2017-10-10 |
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