KR101315235B1 - Filter device for reducing exhaust-gas of a ship - Google Patents

Abstract

PURPOSE: A greenhouse gas reduction filter for a ship is provided to efficiently remove nitrogen oxide, sulfur oxide, etc. in exhaust gas using filter balls which has excellent porosity and a specific surface area. CONSTITUTION: A greenhouse gas reduction filter for a ship comprises a cylindrical filter case (1), a lower mesh net (2), a middle mesh net (3), an upper mesh net (4), and porous material filter balls. The filter case is mounted on a smokestack for exhaust gas. The lower, middle, and upper mesh nets are installed in the inner side of the filter case at regular intervals in a partition shape along the height direction of the filter case. The filter balls fill a space between the lower and middle mesh nets, and a space between the middle and upper mesh nets respectively. For the filter balls, two kinds of filter ball are used with a basic carrier of natural mordenite: a NOx removing ball where a reaction catalyst of nitrogen oxides (NOx) is coated or mixed and a SOx removing ball where an absorbent of sulfur oxides (SOx) is mixed. The NOx removing ball and SOx removing ball are separated into the space between the lower and middle mesh nets, and the space between the middle and upper mesh nets in order to fill the spaces.

Description

Filter device for reducing exhaust-gas of a ship}

In the present invention, two to three mesh nets are provided in a partition form in a cylindrical filter case, and porous filter balls are filled in the space provided between the respective mesh nets, thereby exhausting through the pores between the filter balls. In addition to the smooth discharge of gas, the filter ball with excellent porosity and specific surface area allows for efficient removal of nitrogen oxides and sulfur oxides in the exhaust gas, and can be easily installed in the communication of the exhaust gas. The present invention relates to a portable greenhouse gas reduction filter optimized for exhaust gas treatment of a ship of 130 Kw (176 PS) or less, especially a small fishing boat, by providing a portable product having a simple prefabricated structure capable of one input, collection and recycling.

Due to the rapid industrialization of modern society, the use of fossil fuels such as petroleum and coal has increased exponentially, and the air pollution caused by various harmful gases emitted in the combustion process of fossil fuels is also getting worse day by day. Phenomenon, acid rain, and the like, and the global warming problem caused by the greenhouse effect has recently emerged.

The main culprit of air pollution is the exhaust gas emitted from the engine, thermal power plant, or plant of the vehicle in the state of containing nitrogen oxides (NOx), sulfur oxides (SOx), and dust. As awareness increases, emission regulations for exhaust gases are strictly enforced, and research and development of devices for treating and reducing air pollutants contained in exhaust gases to meet emission standards are being actively conducted.

In response to this trend, the International Maritime Organization (IMO), a subsidiary of the United Nations, has also regulated the emission of nitrogen oxides and sulfur oxides from exhaust gases emitted from ships mainly using diesel engines. In case of oxides, emission regulations of less than 2 g / kwh will be applied from 2016 when Tier III takes effect. In case of sulfur oxides, emission controls of less than 1% in Sulfur Emission Control Area (SECA) have already been in effect since July 2010. Is being applied.

The nitrogen oxide is thermal NOx generated by the reaction of nitrogen and oxygen in the air in the high temperature region, Prompt NOx produced by the hydrocarbon generated from the fuel reacts with the nitrogen in the air, and the nitrogen component contained in the fuel is oxidized in the combustion process. It is classified as fuel NOx, but NO and NO _{2 which} are generated during combustion of fuel are the majority, and sulfur oxide is SO _{2 which} is mainly the oxidized sulfur component in the combustion process. do.

As described above, nitrogen oxides in the exhaust gas generated by the combustion reaction of fossil fuel are removed, and nitrogen oxides and nitrogen or urea as a reducing agent are injected into the catalyst of the V ₂ O ₅ -TiO ₂ series, and the nitrogen oxides and Selective Catalytic Reduction (SCR), which is converted to water and removed, is typically used.

In the SCR method, the nitrogen oxide removal efficiency is 90% under the operating temperature of 350 to 400 degrees, but dust or soot in the exhaust gas is attached to the SCR catalyst layer, causing the catalyst layer to be clogged. In addition, the low-density catalyst can only be installed in the SCR reactor, which causes the volume of the SCR reactor to be larger than necessary, thereby reducing the space utilization of the vessel.

Selective Non Catalytic Reduction (SNCR), another nitrogen oxide removal method, removes nitrogen oxides by directly injecting ammonia, which is a reducing agent, into high-temperature exhaust gas, and does not require a separate catalytic reactor. On the other hand, the cost is low, but the reaction temperature must be kept high and the nitrogen oxide removal efficiency is lower than 60%.

In addition, the method of removing sulfur oxides is largely divided into wet and dry methods. The wet treatment method is to clean sulfur oxides with water or an alkaline solution. Although the reliability of the process is excellent through the research process, it has the disadvantage of requiring a large amount of water and generating secondary pollutants.

On the other hand, the dry treatment method is used to remove sulfur oxides using calcium hydroxide or sodium (Na) -based absorbent, which can reduce the generation of secondary pollutants and does not require reheating of the exhaust gas compared to the wet treatment method. However, there are disadvantages in that the removal efficiency of sulfur oxides is low and the absorbent is expensive.

The above-described exhaust gas treatment method is applied to large vessels in most cases, and it is not only practically difficult to apply to the exhaust gas treatment of small vessels below 130 Kw (176 PS), especially fishing vessels, but also to owners of small vessels. It is a huge economic burden.

Nevertheless, the IMO's Air Pollution Prevention Regulations (MARPOL 73/78, Annex VI-September 1997) are concerned with ozone depleting substances, nitrogen oxides (NOx), sulfur oxides (SOx), volatile organic compounds (VOCs) and incinerators on board. In addition, the emission regulations are strictly regulated, and 11 countries including the Netherlands, Cyprus, Germany, Switzerland, Finland, Luxembourg, Belgium and the United Kingdom are implementing regulations according to the 48th meeting of the MEPC. In addition, relevant laws will soon be revised in Korea through the automatic enforcement of NOx Technical Code.

In the case of small vessels of 130Kw (176PS) or less, especially fishing vessels, which are more than 10,000 vessels when accepting domestic legislation, the provisions of the Convention may be accommodated in domestic legislation. Not only is it expected to occur, but there is also a high possibility that it will lead to a weakening of the competitiveness of the fishing industry by passing on additional cost burdens for the installation and inspection of the exhaust gas treatment system to small fishermen.

Based on this situation, there is a need for a plan to reduce exhaust gas pollutants in small ships, and to develop a reasonable and economical NOx and SOx abatement device capable of realizing this. -House Gas) IMO's policy and implementation on emissions reduction will be adopted at the General Assembly resolutions, so the CO ₂ , CH ₄ , N ₂ O, HFC, PFC, SF _6, etc. Preparation of fishing vessels for regulated substances is also necessary.

Republic of Korea Patent No. 10-1111093 (Notice date: March 05, 2012) Republic of Korea Patent Publication No. 10-2012-0084040 (published: July 27, 2012)

The present invention has been made in order to meet the above requirements, it is installed in the form of a partition between two to three mesh nets in the cylindrical filter case, porous filter in the space provided between each mesh net By filling the ball, it is possible to smoothly discharge the exhaust gas through the gaps between the filter balls, and efficiently remove nitrogen oxides and sulfur oxides in the exhaust gas by filter balls having excellent porosity and specific surface area. By providing a portable product that has a simple assembly structure that can be easily installed in the gas communication and easily inserts, collects and recycles the filter ball, it can be used for vessels of 130Kw (176PS) or smaller, especially small fishing boats. The technical problem is to provide a GHG reduction filter optimized for exhaust gas treatment.

In addition, the present invention is installed by detachably inserting the dust tray provided with the filter plate of the mesh mesh net or porous plate into the lower end of the filter case, the removal of nitrogen oxide and sulfur oxide by the filter ball process also ever possible, as the filter bowl exhausting the two types of cation exchange capacity is excellent natural mordenite carrier in the NO _X removal containing the absorbent of the NOx catalyst and SOx ball and SO _X removal see By applying to the treatment of the gas, not only can provide a very reasonable and economical exhaust gas treatment system required for small vessels, but also the existing SCR scheme mainly applied to large vessels can be applied to the greenhouse gas reduction filter of the present invention. Another technical challenge is to make it possible to use as a catalytic reactor.

As a means for solving the above technical problem, the marine greenhouse gas reducing filter of the present invention, the cylindrical filter case is mounted to the communication of the exhaust gas; A lower mesh net, an intermediate mesh net and an upper mesh net installed in a partition form at regular intervals along the height direction of the filter case from the inside of the filter case; And a filter ball made of a porous material filled in a space corresponding to the lower mesh net and the middle mesh net and a space corresponding to the middle mesh net and the upper mesh net, respectively. It is also possible to fill the filter ball in one space provided by the lower mesh net and the upper mesh net without installing the mesh net.

In addition, the marine greenhouse gas reducing filter of the present invention further comprises a dust tray that is detachably inserted into the filter case at a position corresponding to the lower mesh net, wherein the dust tray has a cylindrical shape. A mesh mesh is installed at the bottom of the tray body of the tray, or a perforated plate-shaped strain plate is formed at the bottom of the tray mesh to protrude at a narrow interval. The front side is characterized in that the grip handle is installed.

In addition, the filter ball is characterized in that it is made of spherical particles having a diameter of 2mm ~ 10mm by using a natural mordenite (Mordenite), the filter ball as a basic carrier using natural mordenite nitrogen Two types of NOx removal balls coated or mixed with oxide reaction catalyst and SOx removal balls mixed with absorbent of sulfur oxide are used, and NOx is placed in the space between lower mesh net, middle mesh net and upper mesh net. Removing and filling the removal ball and the SOx removal ball, respectively, or a mixture of NOx removal ball and SOx removal ball in a space provided by the lower mesh and the upper mesh mesh at a predetermined ratio, the NOx removal The diameter of the ball and the SOx removal ball is characterized in that it is easy to distinguish.

According to the present invention as described above, in the state in which the exhaust gas can be smoothly discharged through the pores between the filter balls, the nitrogen and sulfur oxides in the exhaust gas and the like efficiently by the filter ball having excellent porosity and specific surface area. It is a portable product that can be easily attached to the exhaust gas communication and has a simple assembly structure.It is optimized for exhaust gas treatment of ships of 130Kw (176PS) or less, especially small fishing boats. It is effective to provide a greenhouse gas reduction filter.

In addition, two of the processing of the particulate component by the dust tray with the removal of nitrogen oxides and sulfur oxides by the filter bowl also has the possible effect, each NO _X removing one minutes is easy, by different diameter ball and SO _X removal see By applying the branch filter ball to the exhaust gas treatment, it is possible not only to provide a very reasonable and economical exhaust gas treatment system required for a small vessel, but also to the existing SCR system mainly applied to a large vessel. It is to provide a very useful effect such as using a greenhouse gas reduction filter as a catalytic reactor.

1 is an exploded perspective view of a marine greenhouse gas reduction filter according to the present invention.
2 is an external perspective view of the combined state of FIG.
3 is a side sectional view of Fig. 2; Fig.
4 is a side sectional view showing another embodiment of the present invention.
Figure 5 is a side cross-sectional view showing another embodiment of the present invention.
6 is a sectional view taken along the line AA in Fig. 5;
7 and 8 are a perspective view and a side cross-sectional view showing another application example of the dust tray.

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

Marine greenhouse gas reduction filter 10 according to an embodiment of the present invention, as shown in Figures 1 to 3, respectively, based on the cylindrical filter case (1) mounted on the communication 20 of the exhaust gas The lower mesh net 2, the middle mesh net 3 and the upper mesh net 4 are partitioned at regular intervals along the height direction of the filter case 1 inside the filter case 1. Installed in, the inner space of the filter case (1) corresponding to between the lower mesh net (2) and the middle mesh net (3) corresponding to between the middle mesh net (3) and the upper mesh net (4) The inner space of the filter case 1 is filled with a filter ball 15, which is a porous material.

As described above, since the greenhouse gas reduction filter 10 of the present invention is installed in the communication 20 which is the final exhaust part of the exhaust gas of the marine diesel engine or the incinerator provided on board, the communication ( In consideration of the various forms of 20), a prefabricated structure that can cope with this should be provided to the filter case 1, and in FIG. 3, the communication 20 is fitted to the upper and lower sides of the filter case 1. The manner of assembly is shown.

In addition, the greenhouse gas reduction filter 10 of the present invention is based on the external beauty, but has an appropriate weight so as not to cause deformation of the communication 20 by the sea wind or vibration, and the filter case (1) Is made of a metal material excellent in corrosion resistance, and by coating a surface of the corrosion resistant paint and the like to a thickness of 30㎛ or more, it is preferable to maintain sufficient durability in the corrosion environment of the sea and the corrosion environment of the exhaust gas.

Thus, the filter case 1 is not a transparent material that can be seen from the outside of the mesh network (2) (3) (4) structure as shown in Figures 1 and 2, but the greenhouse gas reduction filter according to the present invention It is to be noted that the filter case 1 is assumed to be a transparent material so that the basic structure of (10) can be more clearly shown.

In addition, in the case of the lower mesh net 2, the intermediate mesh net 3 and the upper mesh net 4, a metal net having excellent corrosion resistance is used in consideration of the conditions used in the corrosive exhaust gas of high temperature. Corrosion-resistant paints or the like may be coated on the surface of the metal mesh, and each mesh net 2, 3, 4 may be fixed to the inside of the filter case 1 by welding, and the filter case 1 may be It is also possible to install each mesh net (2) (3) (4) in a prefabricated manner by forming a stepping step, an assembly protrusion, or the like on the inner circumferential surface thereof.

Each of the mesh nets 2, 3 and 4 is a component that allows the smooth flow of the exhaust gas and at the same time supports the filter balls 15 filled on the upper side thereof. (3) (4) The size of the mesh (Mesh) is enough that the filter ball 15 does not fall out to the bottom, and is used for the production of the mesh nets (2) (3) (4). The diameter (thickness) of the metal mesh to be used is sufficient so that deformation or short-circuit does not occur due to external impact or the like, and, if necessary, reinforces at the outer circumferential edge of each mesh network You can also create a dragon border.

As described above, since the lower mesh net 2, the intermediate mesh net 3 and the upper mesh net 4 are installed in the form of partitions in the cylindrical filter case 1, the filling and replacing of the filter ball 15 is performed. To make the work easier and easier, the filter case 1 can be divided into three bodies with each mesh net 2, 3 and 4 as a base plate, and then disassembled and assembled between the bodies. Most desirable.

To this end, as shown in FIG. 3, the filter case 1 includes a lower body 11 having the lower mesh net 2 as the bottom plate, and an intermediate body 12 having the lower mesh net 3 as the bottom plate. While divided into three parts of the upper body 13 having the upper mesh net 4 as the bottom plate, the lower body 11 and the middle body 12 and the upper body 13 provides a fitting assembly structure. It is connected to the body assembly 14 so as to be disassembled and assembled.

Therefore, the portion where the filter case 1 is connected to the communication 20 is the lower side of the lower body 11 and the upper side of the upper body 13, as shown in Figure 3, the lower body 11 in the drawing The communication tube 20 is inserted into the inner peripheral edge of the lower side inner peripheral portion and the upper body 13 of the fitting type, and the support jaw 9a and the upper body 13 protruded from the inner peripheral edge of the lower body 11. The upper mesh net 4, which is the bottom plate of the, provides a supporting structure of the communication 20.

However, the lower body 11 and the upper body 13 may be inserted into the inner circumferential edge of the communication 20, in this case, the lower body 11 and the upper body 13 in communication with the outer peripheral edge Hanging jaws and the like for supporting the 20 should be provided, and unlike the method shown in FIG. 3, the exhaust gas reducing device 10 of the present invention may be assembled at the top of the communication 20. There is only a lower body 11 is connected to the communication (20).

As a component corresponding to still another essential part of the present invention, there is provided a dust tray (5) detachably inserted into the filter case (1) at a position corresponding to the lower portion of the lower mesh network (2). The tray 5 is provided with a mesh mesh 6 at the bottom of the cylindrical tray body 5a, and a grip 7 for connection is installed at the front side of the tray body 5a.

As described above, the dust tray 5 is detachably inserted into the filter case 1, and as shown in FIGS. 1 and 3 more clearly, the dust tray is disposed at the lower side of the filter case 1. A lower end opening 8 into which the tray body 5a of (5) is inserted is formed, and a storage space 9 for the dust tray 5 having the lower opening 8 as an inlet is a lower end of the filter case 1. It is provided on the inside, the support jaw (9a) provided in the lower body 11 for assembly with the communication 20 is also to support the dust tray (5).

In addition, as a means for maintaining the mounting state of the dust tray (5) more firmly, the gripping handle (7) is connected to the front side of the cylindrical tray body (5a) by using an arc-shaped frame On the other hand, a wedge-shaped assembly gap 5b is provided between both end portions of the grip handle 7 and the tray body 5a, and corresponds to both ends of the lower opening 8 through the assembly gap 5b. Lower body 11 is made to be inserted into the fitting.

In addition, as shown in Figs. 1 and 6, by forming the fastening holes (7a) (8a) on both sides of the gripping handle (7) and the lower end of the lower body 11 corresponding thereto, the lower opening 8 The dust tray 5 inserted into the inside of the filter case 1 is fixed to the filter case 1 using fastening means such as bolts when necessary.

The detachable assembly structure of the filter case 1 and the dust tray 5 described above is just one representative example that can be applied to the present invention. In addition, the detachable assembly structure of various methods can be applied, and the mesh mesh ( 6) It is also preferable to use a metal mesh coated with a corrosion-resistant metal or a corrosion-resistant paint, and to apply a mesh of about 1-2 mm for collecting and treating dust.

The reason why dust can be collected by the mesh mesh 6 of the dust tray 5 as described above is that the dust component passing through the mesh mesh 6 is discharged between the filter balls 15 by the discharge pressure of the exhaust gas. While the pores do not pass through and remain in the vicinity of the lower mesh network (2), the aggregated dust components in the situation where the exhaust gas is not discharged fall into the mesh mesh (6) and the mesh mesh (6) Because it lies on the top.

In addition, since the dust itself is very light in weight, the amount of the dust component placed on the mesh mesh 6 falls back to the lower side communication 20 by its own weight is not so large, and the dust tray (for dust collection) In the process of removing 5) from the filter case (1), a small amount of dust may be scattered, but may be negligible in consideration of the total amount of dust collected, and the dust tray (5) used for collecting dust is washed after washing. It can be refitted and used.

Vessel greenhouse gas reduction filter 10 according to the present invention needs to ensure a smooth discharge flow of the exhaust gas so that the output of the marine diesel engine is not reduced, according to the existing fabric filter having a fabric structure Since it is not applicable, it is preferable to use the filter ball 15 manufactured in the form of a ball so as not to interfere with the exhaust flow of the exhaust gas based on a carrier having a pore of about 30 μm.

The filter ball 15 may be removed by adsorbing nitrogen oxide and sulfur oxide components and fine dust components of the mist (Mist) level contained in the exhaust gas using a carrier, which is a porous material, each filter ball 15 With the air gap provided between), a smooth exhaust flow of the exhaust gas is induced, and the specific surface area (surface area in contact with the exhaust gas) for the treatment of the exhaust gas can be improved by 50% or more compared with the conventional fabric filter. As a result, it is possible to maintain excellent processing performance even if the size and capacity of the product is reduced, and provides the advantage of easy collection and recycling of the filter.

The porous filter ball 15 used in the present invention as described above may be applied to the existing activated carbon, etc., but by mounting the greenhouse gas reduction filter 10 directly to the communication 20, high humidity environment or various vibrations It is most preferable to use a mordenite material, which is a kind of natural zeolite, in consideration of the use conditions exposed to the back and the molding conditions in the form of balls.

As described above, mordenite, a natural mineral, has a cation substitution capacity (ideal value: 210 meq / 100 g) necessary for the treatment of exhaust gas at about 160 meq / 100 g, and thus has a very good cation substitution capacity compared to about 110 meq / 100 g of activated carbon. In addition, it possesses large pores equivalent to about 30 times that of activated carbon, but maintains its molecular porosity that exceeds that of activated carbon, so it has excellent adsorption performance of various pollutants, and has durability of Moss hardness 7 and Shore hardness 110. It is also an excellent material.

Fabrication of the filter ball 15 using the mordenite as described above, the mordenite obtained as a natural mineral as a base material is processed into a powder form, and then compressed into spherical particles having a predetermined diameter Or a sintering method is applied, it is preferable that the diameter of the filter ball 15 used in the present invention is in the range of 2mm ~ 10mm.

The reason for setting the diameter of the filter ball 15 in the range of 2 mm to 10 mm as described above is that when the filter ball 15 having a diameter of less than 2 mm is used, the total specific surface area required for the treatment of the exhaust gas can be increased. When the filter balls 15 are too tightly adhered to each other, they may interfere with the smooth flow of the exhaust gas, and when the diameter of the filter balls 15 exceeds 10 mm, the filter balls 15 may be slightly advantageous in terms of smooth exhaust gas. However, this is because the overall specific surface area required for the treatment of the exhaust gas is reduced.

In addition, the storage space provided by the lower body 11 and the intermediate mesh net 3 and the upper mesh as an inner space of the filter case 1 corresponding to the lower mesh net 2 and the intermediate mesh net 3 The ratio of filling the filter ball 15 in the storage space provided by the intermediate body 12 as the inner space of the filter case 1 corresponding to the net 4 is preferably about 50% to 90% of the space. Do.

The reason why the filling ratio of the filter ball 15 is about 50% to 90% as described above is to ensure the treatment efficiency of the exhaust gas by the filter ball 15 at a predetermined level or higher, and to filter the upper portion of the space inside. By providing a free space in which the ball 15 is not filled, it reduces the discharge resistance of the exhaust gas by the filter ball 15, and allows each filter ball 15 to oscillate or move slightly within the space. Blockage of the passage is also to be prevented.

In consideration of all the above aspects, by filling the appropriate amount of the filter ball 15 of the appropriate size in the storage space provided by the lower body 11 and the intermediate body 12, the communication 20 and In the process of exhaust gas discharged through the connected filter case 1, the respective filter balls 15 filled in the lower body 11 and the middle body 12 adsorb various contaminants in the exhaust gas step by step. It is advantageous to remove it.

Even more preferably, the NOx removal ball 15a in which the reaction catalyst of nitrogen oxide is coated or mixed with a natural mordenite as a basic carrier as the filter ball 15, and the SOx removal ball 15b in which the absorbent of sulfur oxide is mixed After manufacturing two kinds of), the NOx removal ball 15a and the SOx removal ball 15b are stored in the lower body 11 corresponding to the lower mesh net 2 and the intermediate mesh net 3. The space and the intermediate mesh net 3 and the upper mesh net 4 is to be separately filled in the storage space of the intermediate body 12 corresponding to.

When the above method is applied, the NOx removal ball 15a filled in the lower body 11 in the drawing selects and removes nitrogen oxides in the exhaust gas, and removes SOx filled in the middle body 12 in the drawing. The ball 15b selects and removes sulfur oxides in the exhaust gas, and the bottom dust tray 5 efficiently filters and removes various contaminants contained in the exhaust gas in a stepwise manner. It becomes possible.

The reaction catalyst of nitrogen oxide and the sulfur oxide absorbent applied to the NOx removal ball 15a and the SOx removal ball 15b are a catalyst of V ₂ O ₅ -TiO ₂ series and calcium hydroxide or sodium (Na Since various types are known, including a series of absorbents, a suitable one can be selected and applied, and a method of applying a reaction catalyst and an absorbent to a mordenite carrier may also be applied to various methods such as powder mixing or deposition or nanocoating. have.

In the case of the coating method, it is preferable to apply to the metal catalyst, the nano-coating method that the mordenite carrier can maintain molecular scale porosity is most preferred, and in the case of powder mixing method, it is preferable to apply to the non-metal catalyst or absorbent. In addition, considering the production cost and reactivity of the filter ball 15 at the same time, it is preferable to add the reaction catalyst or the absorbent component to about 10wt% to 20wt% of the mordenite powder.

In addition to the above reaction catalyst or absorbent, it is also possible to apply a reactant capable of neutralizing or purifying the contaminants by directly reacting with nitrogen oxides and sulfur oxides to the mordenite carrier, and such a reagent has not been developed until now. It is expected to be developed through continuous research.

Figure 4 shows another embodiment of the present invention, the mounting flange (1a) is provided on the upper side and the lower side of the filter case (1) as an assembly means for installing the filter case (1) in the communication (20) On the other hand, the screw fastening method is applied to the body assembly 14 between the lower body 11 and the intermediate body 12 and the upper body 13, the NOx removal ball 15a and SOx removal ball 15b mutually By having a different diameter to facilitate differentiation between each filter ball 15, the rest of the configuration is made in the same manner as the previous embodiment.

In FIGS. 3 and 4, the NOx removal ball 15a is filled in the storage space provided by the lower body 11, and the SOx removal ball 15b is filled in the storage space provided by the intermediate body 12. The removal of nitrogen oxide is preceded by the removal of sulfur oxide prior to the removal of sulfur oxides in the treatment of nitrogen oxide, which is a commonly applied method for treating exhaust gas, but the NOx removal ball 15a is removed from the intermediate body 12 and SOx removal is performed. It is also possible to fill the lower body 11 with the ball 15b.

Figure 5 shows another embodiment of the present invention, the lower mesh net 2 and the upper mesh net 4 is installed in the interior of the filter case 1, one storage space by the lower body (11) In the provided state, the filter ball 15 is filled in the inside of the space, but the NOx removal ball (15a) and SOx removal ball (15b) having a different diameter is mixed and filled in a certain ratio, other than that The rest of the configuration is the same as in the previous embodiment.

In other words, the embodiment illustrated in FIG. 5 may be omitted from the intermediate mesh net 3 and the intermediate body 12 in the embodiments illustrated in FIGS. 3 and 4, but the lower body 11 may be provided. The NOx removal ball 15a and the SOx removal ball 15b are mixed and filled in one storage space at a predetermined ratio, while the dust tray 5 is provided on the inner lower part of the filter case 1 to prevent from exhaust gas. It is miniaturized to maintain the function of treating nitrogen oxides, sulfur oxides and dust components.

Therefore, the embodiment shown in FIG. 5 is preferably applied to a low load treatment condition where the pollution degree of exhaust gas is relatively low, and the mixing ratio of the NOx removal ball 15a and the SOx removal ball 15b is 50:50. However, it is preferable to increase the mixing amount of the filter ball 15 of the required type according to the distribution of pollutants contained in the exhaust gas, and in general, since the processing load of nitrogen oxides is increased, the mixing amount of the NOx removal ball 15a is increased. A lot.

Of course, the embodiment shown in Figures 3 and 4 can also be applied to the filling method of mixing the NOx removal ball (15a) and SOx removal ball (15b) in the storage space of the lower body (11) and the intermediate body (12). 4 and 5, the NOx removal ball 15a is shown to have a large diameter, it is also possible to make the diameter of the SOx removal ball 15b larger than the diameter of the NOx removal ball 15a.

7 and 8 show another application example of the dust tray 5 used in the greenhouse gas reduction filter 10 of the present invention, instead of the mesh mesh 6 at the bottom of the tray body 5a. And the filtering plate 16 is installed, and the filtering plate 16 has a narrow inlet passage and a narrow conical passageway 16a having a narrow upper outlet, which is tightly spaced over the entire surface of the filtering plate 16. It becomes a perforated plate of the embossing form formed protrudingly.

When the filter plate 16, which is an embossed porous plate, is applied in place of the mesh mesh 6 as described above, the dust component can be collected more effectively because the lower inlet is wider and the upper outlet is larger. Due to the structural characteristics of the narrow conical passage 16a, when the exhaust gas is discharged, dust components can easily pass through each of the conical passages 16a, but in a situation where the exhaust gas is not discharged, the lower mesh network 2 This is because the dust component filtered in the vicinity does not escape to the narrow upper side exit of the conical passage 16a and is placed on the upper surface of the trapping plate 16 corresponding to the periphery of the conical passage 16a.

In addition, since each of the conical passages 16a is formed to protrude to the upper surface of the trapping plate 16, the collected dust components are concentrated in the concave space between each of the conical passages 16a. Even in the process of separating the dust tray 5 from the filter case 1, the dust components are hardly scattered so that a very clean collection operation is possible.

According to the ship greenhouse gas reduction filter 10 of the present invention as described above, the porous filter ball having excellent porosity and specific surface area in a state to enable the smooth discharge of the exhaust gas through the gap between the filter ball 15 ( 15) it is possible to efficiently remove nitrogen oxides and sulfur oxides in the exhaust gas, it can be easily mounted on the flue gas communication 20, easy to insert and collect the filter ball 15, and simple It is possible to provide a portable product having a prefabricated structure.

In addition to the removal of nitrogen oxides and sulfur oxides by the filter ball 15, it is also possible to process the dust components by the dust tray 5, as well as the NO _x removal ball that can be easily distinguished by different diameters ( by two filter bowl (15, 15a) and sO _X removal ball (15b)) ever applied to the treatment of exhaust gases, as well as to provide an exhaust gas processor of a very rational and economical manner required for the small vessels In the existing SCR method, which was mainly applied to large vessels, the greenhouse gas reduction filter 10 of the present invention can be utilized as a catalytic reactor.

In other words, in the case of a small vessel, the ammonia, urea component or the like, which is a reducing agent of nitrogen oxide, is mixed into the exhaust gas while the greenhouse gas reduction filter 10 of the present invention is mounted on the communication 20. By adding only, it is possible to apply the SCR system with excellent processing performance in an easy and economical manner, and in the case of large vessels, the GHG reduction filter 10 of the present invention is added to the existing SCR system as a catalytic reactor. That means more efficiency.

Ultimately, by presenting a realistic alternative that is optimally applicable to the exhaust gas treatment of vessels of less than 130 kilowatts (176 PS), particularly small fishing vessels, minimizing complaints that may arise when the IMO Convention is applied to national legislation. In addition, it is possible to contribute to securing fishery competitiveness in the future by avoiding the burden of the cost of installing and inspecting the exhaust gas treatment system for small fishermen.

Finally, although the greenhouse gas reduction filter 10 according to the present invention is proposed for a small ship, the exhaust gas is discharged to a facility in which nitrogen oxides, sulfur oxides or volatile organic compounds are discharged, such as various incineration (burning) facilities and coating facilities. Not only can it be applied for treatment, but also fills the filter ball 15 in the dust tray (5) It will be apparent that it is possible to utilize the internal space of the dust tray (5) for the exhaust gas treatment.

1: filter case 1a: mounting flange 2: lower mesh net
3: middle mesh net 4: upper mesh net 5: dust tray
5a: Tray body 5b: Assembly interval 6: Filter mesh
7: Grip handle 7a, 8a: Fastening hole 8: Lower opening
9: Storage space 9a: Base 10: Greenhouse gas filter
11: lower body 12: middle body 13: upper body
14: body assembly 15: filter ball 15a: NO _X removal ball
15b: SO _X removal ball 16: Filter plate 16a: Conical passage
20: communication

Claims (12)

In a greenhouse gas reduction filter that removes nitrogen oxides (NO _X ) and sulfur oxides (SO _X ) in the exhaust gas discharged from an engine of a ship or an incinerator in a ship,
The greenhouse gas reduction filter 10, the cylindrical filter case (1) mounted on the communication 20 of the exhaust gas; A lower mesh net 2, an intermediate mesh net 3 and an upper mesh net 4 installed in a partition form at regular intervals along the height direction of the filter case 1 in the filter case 1; Filter ball which is a porous material filled in the space corresponding to the lower mesh net 2 and the middle mesh net 3 and the space corresponding to the middle mesh net 3 and the upper mesh net 4, respectively. (15), including,
The filter ball 15 has two kinds of NOx removal balls 15a coated with or mixed with a nitrogen oxide reaction catalyst and SOx removal balls 15b mixed with a sulfur oxide absorbent using natural mordenite as a basic carrier. Used,
The NOx removal ball 15a and the SOx removal ball 15b are spaces between the lower mesh net 2 and the intermediate mesh net 3 and between the intermediate mesh net 3 and the upper mesh net 4. Marine greenhouse gas filter, characterized in that the filling is separated and filled in the space corresponding to each. The method according to claim 1, wherein the greenhouse gas reduction filter 10, the dust tray (5) which is detachably inserted into the filter case (1) at a position corresponding to the lower mesh net (2) is installed. Including as,
The dust tray 5 is characterized in that the mesh mesh net 6 is installed at the bottom of the cylindrical tray body 5a, and the grip handle 7 is connected to the front side of the tray body 5a. Marine Greenhouse Gas Reduction Filter. The method according to claim 1, wherein the greenhouse gas reduction filter 10, the dust tray (5) which is detachably inserted into the filter case (1) at a position corresponding to the lower mesh net (2) is installed. Including as,
The dust tray 5 is provided with a trap plate 16 on the bottom side of the cylindrical tray body (5a), the grip handle (7) is connected to the front side of the tray body (5a),
The trap plate 16 is characterized in that the conical passage (16a) of the shape of the lower inlet is wide and the upper outlet is narrow and protrudes at a tight interval over the entire surface of the filter plate (16) Marine greenhouse gas filter. The vessel according to any one of claims 1 to 3, wherein the filter ball 15 is made of spherical particles having a diameter of 2 mm to 10 mm using natural mordenite. Greenhouse Gas Reduction Filter. delete The ship greenhouse gas reduction filter according to claim 4, wherein the NOx removal ball (15a) and the SOx removal ball (15b) are manufactured to have different diameters. In a greenhouse gas reduction filter that removes nitrogen oxides and sulfur oxides in the exhaust gas discharged from an engine of a ship or an incinerator in a ship,
The greenhouse gas reduction filter 10, the cylindrical filter case (1) mounted on the communication 20 of the exhaust gas; A lower mesh net 2 and an upper mesh net 4 installed in a partition form at regular intervals along the height direction of the filter case 1 in the filter case 1; And a filter ball 15 which is a porous material filled in a space corresponding to the lower mesh net 2 and the upper mesh net 4;
The filter ball 15 has two kinds of NOx removal balls 15a coated with or mixed with a nitrogen oxide reaction catalyst and SOx removal balls 15b mixed with a sulfur oxide absorbent using natural mordenite as a basic carrier. Used,
The NOx removal ball (15a) and SOx removal ball (15b) is mixed in a predetermined ratio to reduce the greenhouse gas for ships, characterized in that filled in the space between the lower mesh net 2 and the upper mesh net (4) filter. The method according to claim 7, wherein the GHG reduction filter 10, the dust tray (5) is detachably inserted into the filter case (1) at a position corresponding to the lower mesh net (2). Including as,
The dust tray 5 is characterized in that the mesh mesh net 6 is installed at the bottom of the cylindrical tray body 5a, and the grip handle 7 is connected to the front side of the tray body 5a. Marine Greenhouse Gas Reduction Filter. The method according to claim 7, wherein the GHG reduction filter 10, the dust tray (5) is detachably inserted into the filter case (1) at a position corresponding to the lower mesh net (2). Including as,
The dust tray 5 is provided with a trap plate 16 on the bottom side of the cylindrical tray body (5a), the grip handle (7) is connected to the front side of the tray body (5a),
The trap plate 16 is a marine greenhouse, characterized in that the conical passage (16a) of the lower inlet is wider and the upper outlet is narrower protruding at a tight interval over the front of the filter plate (16) Gas reduction filter. 10. The vessel greenhouse gas reduction filter according to any one of claims 7 to 9, wherein the filter ball (15) is made of spherical particles having a diameter of 2 mm to 10 mm using natural mordenite. delete The ship greenhouse gas reduction filter according to claim 10, wherein the NOx removal ball (15a) and the SOx removal ball (15b) are manufactured to have different diameters.

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