KR101939203B1

KR101939203B1 - Catalyst support module for mass catalyst reactor

Info

Publication number: KR101939203B1
Application number: KR1020160014229A
Authority: KR
Inventors: 김명수; 김통복
Original assignee: 주식회사 아모그린텍
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2019-01-17
Also published as: KR20170093292A

Abstract

The catalyst carrier module of the present invention includes a case having a space through which exhaust gas passes, a flat plate and a corrugated plate alternately stacked without being bonded to the case and coated with a catalyst, A fixing unit for fixing the case to the case is formed, so that the flat plate and the corrugated plate can be fixed without a separate joining step, shortening the manufacturing process and reducing the manufacturing cost.

Description

[0001] CATALYST SUPPORT MODULE FOR MASS CATALYST REACTOR [0002]

The present invention relates to a catalyst support module for a large-capacity catalyst reactor in which a flat plate and a corrugated plate can be alternately stacked and fixed without a separate bonding process.

Pollutants such as nitrogen oxides, sulfur oxides, carbon monoxide, hydrocarbons, etc. contained in the exhaust gas are a great threat to the human environment, and countries are also accelerating the development of technologies for enhancing or reducing the regulation of harmful emissions.

The automobile sector, which has the largest amount of emissions, has a direct impact on the on-the-ground environment in which human lives, and thus the demand for regulatory control is high and the treatment technology has been advanced from early on. On the other hand, regulations on ship's exhaust gas have been relatively recent, and IMO and advanced countries are actively preparing countermeasures.

In 1973, the International Maritime Organization (IMO) adopted the International Convention for the Prevention of Pollution from Ships (MARPOL) as an international Convention on the Prevention of Marine Pollution from Ships. In this case, the emissions of nitrogen oxides (NOx) from ship engines that reduce emissions by 20% from Annex II (Tier II), which starts in 2011, and 80% from Annex III (Tier Ⅲ) I am referring to the program. Therefore, in a large ship industry using a large-sized engine, researches on a large-capacity catalytic converter for purifying nitrogen oxides and the like contained in the exhaust gas are actively conducted.

In the field of NOx reduction in green ship exhaust gas treatment technology to respond to environmental regulations related to shipbuilding and marine industry of International Maritime Organization, selective catalytic reduction (SCR) system with proven performance, safety and economical efficiency Is getting popular.

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

Unlike an automobile, a large-sized engine such as a ship or a plant sharply increases exhaust gas emissions, so that the size of a selective catalytic reduction system also increases, and a larger-sized carrier is required. In terms of manufacturing, the integrated catalyst carrier having a large size by merely increasing the size has a problem in manufacturability such as a lack of facilities for producing the same, and coating of the catalyst is also difficult.

In order to solve this problem, a method of manufacturing a catalyst carrier in a module form and assembling the catalyst carrier has been proposed. Such modular production and assembly structures are important not only for production but also for maintenance and replacement of the carrier.

Korean Patent Laid-Open Publication No. 10-2012-0117426 (Patent Document 1) discloses a structure in which a large-capacity catalyst carrier is produced in the form of a unit catalyst carrier block and assembled, or a structure in which an assembly member is fastened between adjacent unit catalyst carrier blocks It has a lot of fastening points and a complicated structure.

In addition, in the unit catalyst carrier block of Patent Document 1, a cell-formed body in which a plurality of hollow cells are formed by a wave plate / flat plate assembly fabricated from a flat plate and a wave plate made of a thin metal plate coated with a catalyst on the surface corresponds to the shape of the cell- And a support for receiving and inserting the cell-formed body as a polygonal structure.

Furthermore, conventional metal carriers implemented using metal plate wafers coated with a catalyst on their surface and wafers / flat plate assemblies made from flat plates are used for brazing, welding, soldering, And a diffusion / bonding joining method such as diffusion bonding, the productivity is low, and it is difficult to secure price competitiveness.

When the metal carrier module used in a catalytic reactor for an automobile or a home appliance is laminated and fixed without bonding a corrugated plate to a flat plate, it is difficult to apply because it resonates with vibration generated in an engine or a motor in operation, In the case of large ships or power generation facilities, such noise is not a problem.

Korean Patent Laid-Open Publication No. 10-2014-0064358 (Patent Document 2) discloses a winding type metal carrier for forming a large-capacity catalyst carrier, which is wound around one axis so that a flat plate and a corrugated plate are alternately arranged, The flat plate and the corrugated plate include a polygonal winding section formed to have a polygonal section for each winding and a core section inserted into the center of the polygonal winding section and formed in a wound form.

The wrapping-type metal carrier of Patent Document 2 can reduce the weight of the carrier, reduce the welding cost, and improve the workability by omitting the outer can or the housing and fixing the flat plate and the corrugated plate in a polygonal winding state.

However, the metal carrier of Patent Document 2 has a winding type structure, and since the core portion is separately fabricated and assembled, there is a limit to improvement in productivity.

On the other hand, the exhaust gas discharged from a large-scale plant such as an automobile, a household appliance, a power plant or an incinerator contains a pollutant such as sulfur oxides, carbon monoxide and hydrocarbons in addition to nitrogen oxides.

The large-scale catalytic reactor can be applied to a selective catalytic reduction (SCR) system for reducing nitrogen oxides (NOx) according to a catalyst coated on a metal carrier, and can be applied to Pt / Rh, Pd / Rh or Pt / Pd / (CO), nitrogen oxides (NOx) and hydrocarbons (HC) based compounds contained in the exhaust gas in an automobile when using a three way catalyst, can be applied to an exhaust gas catalytic converter for removing these compounds simultaneously And can be applied to a catalytic reactor that is used in a reformer of a fuel cell to induce a chemical reaction of hydrocarbons.

: Korean Patent Publication No. 10-2012-0117426 : Korean Patent Publication No. 10-2014-0064358

Accordingly, it is an object of the present invention to provide a catalyst carrier module for a large-capacity catalyst reactor capable of shortening the manufacturing process and reducing the manufacturing cost, because the plate and the corrugated plate can be fixed without a separate joining process.

In order to achieve the above object, a catalyst carrier module of the present invention comprises a case having a space through which exhaust gas passes, a plate and a corrugated plate alternately stacked on the case and coated with a catalyst, A fixed unit for fixing the plate and the corrugated plate to the case is formed.

The fixing unit may include a fixing part formed integrally with the case and bent at an angle of 180 degrees with respect to an inner direction of the case and engaged with an edge of the flat plate and the corrugated plate.

The fixing part includes a first fixing part extending from a first front side of the case, a second fixing part extending from a second front side of the case disposed opposite to the first side, And a fourth fixing part extending from a second rear side of the case.

The fixing unit may include a bent part formed integrally with the case and bent at an angle of 90 degrees and hooked to the edge of the flat plate and the corrugated plate.

The fixing unit includes a fixing slot formed to penetrate through a side surface of the case, and a fixing member fixed to the first case and the second case, which are fitted to the fixing slots and aligned adjacent to each other, And a wedge member for fixing the plate and the corrugated plate to be laminated.

The wedge member includes a fitting groove portion into which the first case and the second case are fitted, a first fixing protrusion protruding from one side of the fitting groove portion and fixing the flat plate and the corrugated plate laminated to the first case, And a second fixing protrusion protruding from the other side and fixing the plate and the corrugated plate laminated to the second case.

The fixing unit may include a spacer member inserted into the inner surface of the case to fix the flat plate and the corrugated plate and formed of a heat resistant material.

The fixing unit may include a welding portion for welding and fixing the inner surface of the case and the end portion of the flat plate and the corrugated plate.

As described above, the catalyst carrier module of the present invention can fix a flat plate and a corrugated plate laminated in a case without a separate joining process by forming a fixing unit in a case, thereby shortening the manufacturing process and reducing manufacturing cost.

1 is a perspective view of a catalyst carrier module according to a first embodiment of the present invention.
2 is a cross-sectional view of a catalyst carrier module according to a first embodiment of the present invention.
3 is a cross-sectional view of a catalyst carrier module according to a second embodiment of the present invention.
4 is a perspective view of a catalyst carrier module according to a third embodiment of the present invention.
5 is a partially enlarged cross-sectional view of a catalyst carrier module according to a third embodiment of the present invention.
6 is a perspective view of a catalyst carrier module according to a fourth embodiment of the present invention.
7 is a cross-sectional view of a catalyst carrier module according to a fifth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of these terms should be based on the content of this specification.

FIG. 1 is a perspective view of a catalyst carrier module according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of a catalyst carrier module according to a first embodiment of the present invention.

1 and 2, a catalyst carrier module 10 according to a first embodiment of the present invention includes a case 12 penetrating both sides thereof, a flat plate 22 alternately stacked on the case 12, And a corrugated plate (24).

The catalyst carrier module 10 is installed in an engine or furnace such as a ship, a power plant, a large plant such as an incinerator, and exhaust gas mixed with nitrogen oxide (NOx) and ammonia (NH3) Respectively.

The catalyst carrier module 10 is disposed between the exhaust pipes, and a large-capacity catalyst carrier for supporting the catalyst therein may be arranged in a multi-stage or single-stage configuration.

The case 12 has a rectangular shape with both ends opened so that the catalyst carrier 20 can be stacked, and both ends thereof are connected to the exhaust pipe. The flat plate (22) and the corrugated plate (24) are formed of a heat resistant metal thin plate, and the thickness is preferably 20 to 100 mu m.

The corrugated plate 24 is formed in a wavy shape or a concavo-convex shape, and the flat plate 22 is formed in a flat plate shape. When the corrugated plates 24 are alternately stacked in the case 12, a passage through which the exhaust gas passes is formed. The surface of the flat plate 22 and the corrugated plate 24 is coated with a catalyst material that reacts with and purifies the exhaust gas.

The flat plate 22 and the corrugated plate 24 of the present invention are alternately stacked inside the case 12 without being bonded to each other since they are not subjected to a separate bonding process. Therefore, a fixed unit is formed in the case 12 so that the flat plate 22 and the corrugated plate 24, which are not bonded to each other, can be maintained in a fixed state without being separated from the case 12.

The fixed unit according to the first embodiment is formed so as to extend from the case 12 of the rectangular shape and is bent at an angle of 180 degrees inward of the case 12 so that the end portion of the fixed unit is located at the edge of the flat plate 22 and the corrugated plate 24 And a fixing unit 30 for maintaining the state in which the flat plate 22 and the corrugated plate 24 are laminated while being held in the case 12. [

The fixing unit 30 is integrally formed with the case 12 and alternately stacks the flat plate 22 and the corrugated plate 24 on the case 12. After the fixing unit 30 is bent at an angle of 180 degrees, The end portion of the wave plate 30 is engaged with the edge of the flat plate 22 and the corrugated plate 24 to fix the flat plate 22 and the corrugated plate 24.

The fixing portion 30 includes a first fixing portion 32 extending from the first front side 14 of the case 12 and a second fixing portion 32 extending from the front side of the case 12 disposed to face the first side 14. [ A second fixing portion 34 extending from the two side surfaces 16 and a third fixing portion 36 extending from the rear first side surface 14 of the case 12, And a fourth fixing portion 38 extending from the second fixing portion 16.

3, the fixing unit according to the second embodiment is integrally formed with the case 12 and is bent at an angle of 90 degrees from the side surface of the case 12, And a bending portion 31 contacting the edge of the base portion 24.

Since the fixing portion 30 according to the first embodiment and the bending portion 31 according to the second embodiment are integrally formed with the case 12 when the case 12 is manufactured, .

When the fixing section 30 or the bent section 31 is bent after the flat plate 22 and the corrugated plate 24 of the case 12 are alternately stacked, the fixing of the flat plate 22 and the corrugated plate 24 The manufacturing process can be simplified.

As shown in FIGS. 4 and 5, the fixed unit according to the third embodiment includes a fixed slot 40 formed to pass through the side surfaces of the first case 50 and the second case 52, respectively, The first case 50 and the second case 52 are fixed to each other so that the catalyst carrier 20 is not separated from the first case 50 and the second case 52 And a wedge member (60) for fixing.

When the catalyst carrier 20 is stacked in the first and second cases 50 and 52 in the vertical direction, the fixing slots 40 are also formed on the side surfaces of the first case 50 and the second case 52 And is formed long in the vertical direction. That is, the fixing slots 40 are elongated in the same direction as the direction in which the catalyst coatings 20 are stacked.

When the catalyst carrier module is used in a large capacity, a plurality of catalyst carrier modules are used in combination in the vertical direction or the left and right direction.

For example, when the first catalyst carrier module and the second catalyst carrier module are arranged in the left-right direction, the first case 50 and the second case 52 are arranged in the horizontal direction, and the first case 50 The side surfaces 42 and the second side surfaces 44 of the second case 52 are arranged in contact with each other.

At this time, the first fixing slot 46 formed in the first case 50 and the second fixing slot 48 formed in the second case 52 are arranged to communicate with each other, and the wedge member 60 is arranged in the first Through the fixing slot 46 and the second fixing slot 48 to fix the first case 50 and the second case 52 together.

The wedge member 60 has a fitting groove portion 62 to be fitted into the first case 50 in a state in which the second case 52 is in contact with the first case 50, A first fixing protrusion 64 for fixing the catalyst carrier 20 stacked on the second case 52 and a second fixing member 62 for fixing the catalyst carrier 20 protruding from the other side of the fitting groove 62 and stacked on the second case 52 And includes a projection 66.

When the plurality of catalyst carrier modules are combined to realize a large capacity, the wedge members 60 are fitted into the fixing slots 40 to fix the catalyst carrier modules, and at the same time, Since the flat plate 22 and the corrugated plate 24 are fixed to the second case 52, the assembling process can be greatly reduced.

6, the fixing unit of the catalyst carrier module according to the fourth embodiment includes a spacer member 70 fitted to both sides of the case 12 to fix the flat plate 22 and the corrugated plate 24, . &Lt; / RTI >

When the spacer member 70 is formed of a heat-resistant material such as ceramic or metal and inserted into the case 12 in the longitudinal direction, the flat plate 22 and the end portion of the corrugated plate 24 are pressed by the spacer member 70, (12).

These spacer members 70 can be inserted not only on both sides of the case 12, but also on the upper and lower surfaces.

7, the fixing unit of the catalyst carrier module according to the fifth embodiment has a structure in which the flat plate 22 and the corrugated plate 24 are alternately stacked on the case 12, And a second welded portion 82 welded between the inner surface of the case 12 and the corrugated plate 24. The first welded portion 80 is welded between the corrugated plate 22 and the inner surface of the case 12,

Since the welding is performed only between the flat plate 22 and the inner surface of the case 12 and between the corrugated plate 24 and the inner surface of the case 12, Can be greatly reduced and the manufacturing process can be simplified.

In the above description of the embodiment, the catalyst carrier module is used in a large-capacity catalytic reactor. However, the present invention is not limited to the case where the corrugated plate and the flat plate are brazed to form an integrated corrugated plate / The present invention is not limited to a large-capacity catalytic reactor and can be applied to any reactor as long as it uses a catalyst carrier module formed by stacking alternately in a can.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: catalyst carrier module 12: case
14: first side 16: second side
20: catalyst carrier 22: flat plate
24: corrugated plate 30:
31: Bend section 40: Fixing slot
60: Wedge member

Claims

A case having a space through which the exhaust gas passes; And
And a plate and a corrugated plate alternately stacked on the case and not coated with each other and coated with a catalyst,
Wherein the case has a fixing unit for fixing the flat plate and the corrugated plate to the case,
The fixing unit includes a fixing slot formed to penetrate a side surface of the case; And
And a wedge member fixed to the first case and the second case, the wedge member being fixed to the first case and the second case, the wedge member being fixed to the first case and the second case, .

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The method according to claim 1,
Wherein the wedge member includes: a fitting groove portion into which the first case and the second case are fitted;
A first fixing protrusion protruding from one side of the fitting groove portion and fixing the flat plate laminated on the first case and the corrugated plate; And
And a second fixing protrusion protruding from the other side of the fitting groove portion and fixing the flat plate laminated on the second case and the corrugated plate.

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