KR102586716B1 - Metallic catalyst carrier and manufacturing apparatus thereof - Google Patents

Abstract

In the present invention, a metal catalyst carrier includes a case having a space through which exhaust gas passes, a flat plate and a corrugated plate alternately stacked on the case and coated with a catalyst, and the corrugated plate forms a first corrugated plate with the flat plate interposed therebetween. A plate and a second corrugated plate are disposed, and the first corrugated plate and the second corrugated plate are formed by alternating first and second corrugated portions, and the vertices of the first corrugated portion and the vertices of the second corrugated portion face each other. By arranging them to be visible, they can minimize deformation during thermal expansion due to external shocks, vibrations, and temperature changes.

Description

Metal catalyst carrier manufacturing device {METALLIC CATALYST CARRIER AND MANUFACTURING APPARATUS THEREOF}

The present invention relates to an apparatus for manufacturing a metal catalyst carrier, and more specifically, to an apparatus for manufacturing a metal catalyst carrier in which the vertices of corrugated plates stacked on each other coincide with each other.

Pollutants such as nitrogen oxides, sulfur oxides, carbon monoxide, and hydrocarbons contained in exhaust gases pose a great threat to the human environment, and each country is strengthening regulations on harmful emissions or accelerating the development of technologies to reduce them.

In the automotive sector, which produces the highest emissions, exhaust gases have a direct impact on the terrestrial environment in which humans live, so regulatory requests are high and treatment technology has made early progress. In contrast, ship exhaust gas regulations are relatively recent, and practical measures are being actively developed, centered around the International Maritime Organization (IMO) and developed countries.

The International Maritime Organization (IMO) adopted the International Convention for the Prevention of Pollution from Ships (MARPOL) in 1973 as an international convention on preventing marine pollution from ships. Here, nitrogen oxides (NOx) are reduced by 20% compared to the current level in Annex Ⅱ (Tier Ⅱ) starting in 2011, and nitrogen oxide emissions from marine engines are reduced by 80% in Annex Ⅲ (Tier Ⅲ) starting in 2016. It mentions the program. For this reason, in the large ship industry using large engines, research is being actively conducted on large-capacity catalytic converters to purify nitrogen oxides contained in exhaust gas.

Among the green ship exhaust gas post-treatment technologies to respond to the International Maritime Organization's environmental regulations related to the shipbuilding and shipping industries, the Selective Catalytic Reduction (SCR) system has proven performance, safety, and economic feasibility in the field of nitrogen oxides (NOx) reduction. This is in the spotlight.

The SCR system includes a reactor equipped with a honeycomb-structured catalyst carrier, which induces exhaust gas mixed with NOx and ammonia (NH ₃ ) to produce nitrogen and water through a reduction reaction. As a material for catalyst carriers, ceramic extruded materials that are low-cost and easy to mass-produce have been designed, but the use of metal carriers that can be manufactured in thin thickness and have excellent mechanical properties is also increasing.

Unlike automobiles, exhaust gas emissions from very large engines such as ships or plants increase rapidly, and the scale of the selective catalytic reduction system also increases accordingly, requiring a larger carrier. In terms of manufacturing, an integrated catalyst carrier that is simply enlarged in size has problems with manufacturability, such as a lack of equipment to manufacture it, and coating the catalyst is also difficult.

To solve this problem, a method of manufacturing catalyst carriers in module form and assembling them was proposed. This modular manufacturing and assembly structure is recognized as important not only in production but also in maintenance and replacement of carriers.

Republic of Korea Patent Publication No. 10-2012-0117426 is a structure that manufactures a large capacity catalyst carrier in the form of a unit catalyst carrier block and assembles it, but the assembly member is centered on an element for fastening between adjacent unit catalyst carrier blocks. , it has many fastening points and a complex structure.

In addition, the unit catalyst carrier block has a cell forming body in which a number of hollow cells are formed by a corrugated plate/plate assembly made from corrugated and flat metal sheets coated with a catalyst on the surface, and has a polygonal structure corresponding to the shape of the cell forming body. It includes a support for receiving and inserting the cell forming body.

Moreover, the conventional metal carrier, which is implemented using a corrugated/flat plate assembly made from corrugated plates and flat plates made of thin metal plates coated with a catalyst on the surface, involves brazing, welding, and soldering the corrugated corrugations and flat plates. , since it uses a corrugated plate/flat plate assembly integrated by a joining method such as diffusion bonding, productivity is low and it is difficult to secure price competitiveness.

In addition, when manufacturing by alternately stacking corrugated plates and flat plates, if the vertices between the corrugated plates are arranged misaligned, there is a problem that the corrugated plates and flat plates are deformed due to external vibration, impact, or temperature change.

Republic of Korea Patent Publication No. 10-2012-0117426

Therefore, the purpose of the present invention is to provide a metal catalyst carrier that can minimize deformation during thermal expansion due to external shock, vibration, and temperature change by aligning the vertices of the stacked corrugated plates to face each other.

Another object of the present invention is to provide a metal catalyst carrier that can be fixed without separate bonding between the corrugated plate and the flat plate by forming convex portions and concave portions at the vertices of the corrugated plates and forming uneven portions on the flat plate so that they can be inserted into each other. will be.

Another object of the present invention is to produce a metal catalyst carrier that can shorten the manufacturing process by manufacturing the shape of the corrugated plate identically in the manufacturing process for producing the corrugated plate, thereby eliminating the need for a separate cutting process to match the shape of the corrugated plate. Providing manufacturing equipment.

According to one feature of the present invention, the metal catalyst carrier includes a case having a space through which exhaust gas passes, a flat plate and a corrugated plate alternately stacked on the case and coated with a catalyst, and the corrugated plate is between the flat plates. A first corrugated plate and a second corrugated plate are disposed, and the first corrugated plate and the second corrugated plate are formed by alternating first and second corrugated portions, and the apex of the first corrugated portion and the second corrugated plate The vertices of the waveforms are aligned so that they face each other.

A convex portion may be formed at a vertex of the first wave-shaped portion, a concave portion may be formed at a vertex of the second wave-shaped portion, and a concave-convex portion may be formed on the flat plate so that the convex portion may be inserted into the concave-convex portion and the concave-convex portion may be inserted into the concave portion.

The metal catalyst carrier manufacturing apparatus of the present invention includes a transfer unit in which a plurality of plate members having the same size are transferred at regular intervals, and the plate members transferred to the transfer unit rotate in engagement with each other to repeatedly form first and second wave forms. It may include a first forming roller and a second forming roller, and a position alignment unit that forms the same shape of all the plate members by matching the starting point where the plate member is engaged with the first forming roller and the second forming roller.

The position alignment unit includes an input unit that inputs the plate member to the starting point (P) of the first forming roller and the second forming roller, a position detection sensor that detects when the plate member is positioned at the starting point, and a position detection sensor. It may include a control unit that controls the operation of the input unit according to the signal applied from the sensor.

The input unit is operated by either a method in which the control unit controls the transfer unit to input the plate member to the starting point, or a method in which a separate input device is installed on one side of the transfer unit to move the plate member to the starting point. can be used

As described above, in the present invention, by aligning the vertices of the stacked corrugated plates so that they face each other, it is possible to minimize deformation during thermal expansion due to external shock, vibration, and temperature changes.

In addition, convex portions and concave portions are formed at the vertices of the corrugated plates, respectively, and uneven portions are formed on the flat plate so that they are inserted into each other, so that the corrugated plate and the flat plate can be fixed without separate bonding.

In addition, by manufacturing the shape of the corrugated plate to be identical in the manufacturing process for producing the corrugated plate, a separate process for matching the shape of the corrugated plate is unnecessary, thereby shortening the manufacturing process.

1 is a front view of a metal catalyst carrier according to a first embodiment of the present invention.
Figure 2 is a front view of a metal catalyst carrier according to a second embodiment of the present invention.
Figure 3 is a configuration diagram of a metal catalyst carrier manufacturing apparatus according to the present invention.
Figure 4 is a block diagram showing an input unit according to the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Referring to FIG. 1, the metal catalyst carrier according to the first embodiment of the present invention consists of a case 10 with both sides pierced, and flat plates 20 and corrugated plates 30 alternately stacked on the case 10. .

The metal catalyst carrier is installed in engines or furnaces of large plants such as ships, power plants, and incinerators, and produces nitrogen and water through a reduction reaction of exhaust gas mixed with nitrogen oxides (NOx) and ammonia (NH3). It is done.

The catalyst carrier is disposed between the exhaust pipes, and a large-capacity catalyst carrier supporting the catalyst may be disposed in a multi-stage or group form.

Case 10 has a square shape with both ends open, and both ends are connected to an exhaust pipe. The flat plate 20 and the corrugated plate 30 are formed of a heat-resistant thin metal plate, and the thickness is preferably 20 to 100 μm.

The corrugated plate 30 is formed in a wavy or uneven shape, and the flat plate 20 is formed in a flat plate shape, and when stacked alternately inside the case 10, a passage through which exhaust gas passes is formed. The surfaces of the flat plate 20 and the corrugated plate 30 are coated with a catalyst material that reacts with the exhaust gas and purifies it.

The corrugated plate 30 is made by alternately stacking a first corrugated plate 32 and a second corrugated plate 34 with a flat plate 20 in between, and the first corrugated plate 32 and the second corrugated plate ( In 34), the first wave-shaped portion 42, which protrudes convexly upward, and the second wave-shaped portion 44, which protrudes convexly downward, are repeated to form a wave shape.

The vertex (A) of the first corrugated portion 42 of the first corrugated plate 32 and the vertex (B) of the second corrugated portion 44 of the second corrugated plate 34 are assembled to coincide with each other. That is, the vertex A of the first wave-shaped part 42 and the vertex B of the second wave-shaped part 44 are assembled to face each other with the plate 20 in between.

In this way, since the vertices of the corrugated plate 30 are assembled to match each other, the supporting force between the corrugated plates 30 is improved, so that the corrugated plate can be damaged due to external shock or vibration, pressure passing through exhaust gas, and thermal expansion due to temperature changes. Deformation of (30) and plate (20) can be minimized.

As shown in FIG. 2, the metal catalyst carrier according to the second embodiment has a concave portion 50 formed in the longitudinal direction at the vertex of the first corrugated portion 42 of the corrugated plate 30, and the second corrugated portion A convex portion 52 is formed at the vertex of 44 in the longitudinal direction, and an uneven portion 54 is formed at the point where the convex portion 52 and the concave portion 50 meet on the flat plate 20.

Therefore, when the first corrugated plate 32, the flat plate 20, and the second corrugated plate 34 are alternately stacked, the concave portion 50 of the first corrugated plate 32 is formed by the uneven portion of the flat plate 20 ( 54) is inserted, and the convex portion 52 of the second corrugated plate 44 is inserted into the uneven portion 54 of the flat plate 20, so that the first corrugated plate 32, the flat plate 20, and the second corrugated plate (34) The corrugated plate and the flat plate can be fixed without separate bonding as they are interlocked.

Like the metal catalyst carrier according to the first embodiment, in order to assemble so that the vertices between the corrugated plates match each other, all corrugated plates must be manufactured to have the same shape. In other words, only when the starting positions at which the corrugated portions of both edges of the corrugated plate are formed are formed the same can the vertices of the corrugated plate be aligned when assembling the corrugated plate.

In this way, in order to form the same starting position of the edge of the corrugated plate, it can be manufactured by aligning the starting point of the edge of the corrugated plate and cutting it in a separate process after manufacturing the corrugated plate.

In this case, a separate process of cutting the edges of the corrugated plate is required to match the edges of the corrugated plate, resulting in an additional manufacturing process.

The metal catalyst carrier manufacturing apparatus of the present invention manufactures the corrugated plate so that the starting point of the corrugated plate coincides during the manufacturing process, thereby eliminating the need for a separate process of cutting and aligning the edges of the corrugated plate.

As shown in FIG. 3, the catalyst carrier manufacturing apparatus of the present invention includes a transfer unit 60 through which plate members 62 of the same size and flat shape are sequentially transferred, and a plate member 62 transferred by the transfer unit 60. ) and forming rollers 64, 66 that form a wave-shaped waveform so that the first wave-shaped portion 42 and the second wave-shaped portion 44 are formed alternately, and are disposed in front of the forming rollers 64, 66. It includes a position alignment portion 68 that matches the starting point P of the plate member 62 entering the forming rollers 64 and 66.

The transfer unit 60 is a belt conveyor, and a plurality of plate members 62 are arranged in a row and sequentially transferred and supplied to the forming rollers 64 and 66.

The forming rollers 64 and 66 include a first forming roller 64 with gear teeth formed on the outer surface, and a second forming roller 66 that has the same shape as the first forming roller and rotates to engage with the first forming roller 64. It is configured, and when the plate member 62 passes between the first forming roller 64 and the second forming roller 66, the first corrugated portion 42 and the second corrugated portion 44 are formed on the plate member 62. It is formed repeatedly.

As shown in FIG. 4, the position alignment unit 68 has a starting point (P) at which the plate member 62 is engaged with the first forming roller 64 and the second forming roller 66 and the first forming roller 64. ) and the end point of discharge through the second forming roller 66 are aligned to form the same shape of all corrugated plates 30.

As shown in FIG. 4, the position alignment unit 68 aligns the plate member 62 transported by the transfer unit 60 to the starting point (P) of the first forming roller 64 and the second forming roller 66. A position detection sensor that detects when the plate member 62 is positioned at the starting point where the plate member 62 is engaged with the input unit 72 and the first forming roller 64 and the second forming roller 66. It includes (74) and a control unit 76 that controls the operation of the input unit 72 according to the signal applied from the position sensor 74.

The position detection sensor 74 is placed at the starting point (P) to detect the front of the plate member 62, and is installed on the transfer unit 60 to detect the front of the plate member 62 when the front of the plate member 62 is located at the starting point. A method for detecting the back side of (62) can be used.

The insertion unit 72 can apply any method of inserting the plate member 62 to the starting point. For example, a type in which the transfer unit 60 simultaneously functions as an input unit and the operation of the transfer unit 60 is stopped when the plate member 62 reaches the starting point may be applied, and a step for directly moving the plate member 62 may be applied. Motor type or cylinder type can be applied.

Here, the starting point (P) is when the first forming roller 64 and the second forming roller 66 are rotated to engage each other, the plate member 62 is connected to the first forming roller 64 and the second forming roller 66. ), and when the plate member 62 is located at the starting point (P), the points where it engages the first forming roller 64 and the second forming roller 66 always coincide, so that the corrugated plate 30 Corrugated plates of the same shape can be produced continuously.

The operation of the catalyst carrier manufacturing apparatus thus configured will be described below.

The plate member 62 moves along the transfer unit 60 at regular intervals and at a constant speed, and the plate member 62 moves between the first forming roller 64 and the second forming roller 66 according to the operation of the input unit 68. ), when the position sensor 74 detects this and applies it to the control unit 76, the control unit 76 stops the operation of the input unit 68 so that the plate member 62 moves to the starting point. Make sure it is located at (P).

In addition, when the plate member 62 is located at the starting point (P), the position where the plate member 62 is engaged with the first forming roller 64 and the second forming roller 66 always coincides, so that the corrugated plate 30 can be manufactured in the same shape.

10: Case 20: Reputation
30: corrugated plate 32: first corrugated plate
34: second waveform plate 42: first waveform part
44: second waveform part 60: transfer part
62: plate member 64: first forming roller
66: second forming roller 68: position alignment unit
72: input unit 74; Position detection sensor
76: Control unit

Claims (6)

delete delete A transfer unit in which a plurality of plate members having the same size are transferred at regular intervals;
a first forming roller and a second forming roller that engage and rotate with each other to repeatedly form a first wave-shaped part and a second wave-shaped part on the plate member transferred to the transfer unit; and
A position alignment unit that molds all plate members to have the same shape by matching the starting point where the plate member engages the first forming roller and the second forming roller. According to paragraph 3,
A metal catalyst carrier manufacturing device wherein the transfer unit is a belt conveyor on which the plate member is transported in a seated state. According to paragraph 3,
The position alignment unit includes an input unit that inputs the plate member to the starting point (P) of the first forming roller and the second forming roller;
A position sensor that detects when a plate member is located at the starting point; and
A control unit that controls the operation of the input unit according to the signal applied from the position sensor. According to clause 5,
The input unit is one of a method in which the control unit controls the transport unit to input the plate member to the starting point, and a method in which a separate input device is installed on one side of the transport unit to move the plate member to the starting point. A metal catalyst carrier manufacturing device used.

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