Washers equipped with flow guiding shapes

Abstract

The present invention provides a scrubber equipped with a flow guiding shape, which includes a scrubber body whose front surface forms a flow inlet and whose upper end forms a discharge outlet, whereby greenhouse gases in exhaust gas are removed by seawater injection, exhaust gas from a marine engine flows in from the flow inlet, and exhaust gas passing through an internal space is discharged from the discharge outlet; an exhaust gas guide portion, which is coupled to the rear end of the flow inlet, whereby a flow-in space of exhaust gas is formed, and which is composed of a rear plate that guides downward exhaust gas flowing in through the flow inlet and side plates that are respectively coupled to both sides of the rear plate; and a flow guiding shape, which is maintained at a certain height from the bottom plate upper end of the scrubber body, whereby exhaust gas guided downward by the exhaust gas guide portion is uniformly diffused to the internal space so that the exhaust gas is discharged from the discharge outlet, wherein the scrubber minimizes accumulation or stagnation of exhaust gas inside the scrubber body.

Description

Technical Field

[0001] The present invention relates to a scrubber equipped with a flow-guiding shape, which minimizes the accumulation or stagnation of exhaust gas inside the scrubber body. Background Technology

[0002] In recent years, the overuse of fossil fuels has led to the emission of large amounts of greenhouse gases, resulting in global warming and frequent related environmental disasters.

[0003] Therefore, a range of technologies for capturing and storing representative greenhouse gases (i.e., carbon dioxide) without emitting them (i.e., carbon dioxide) have attracted attention. Among CCS technologies, chemical absorption is the most commercially viable technology in terms of its ability to handle large-scale processes.

[0004] In addition, carbon dioxide emissions are regulated by the International Maritime Organization (IMO) Energy Efficiency Design Index (EEDI). As a 40% reduction in 2008 emissions is required by 2030, technologies for eliminating carbon dioxide emissions or capturing existing emissions are gaining attention, with the goal of reducing 2008 emissions by more than 50% by 2050.

[0005] Currently, there are no commercially viable examples of the aforementioned technologies for reducing carbon dioxide emissions or capturing generated carbon dioxide on ships. Furthermore, methods using hydrogen or ammonia as fuel are under development but have not yet been commercialized.

[0006] Furthermore, to reduce sulfur oxides in ship exhaust, one option is to use marine light diesel oil (MGO) with a SOx content of less than 0.5%, which is a high-grade fuel. However, this option uses a high-grade fuel, thus increasing operating costs (OPEX). Another option is to use LNG-fueled ships. Although this is a system that uses LNG as a feedstock, the initial capital expenditure (CAPEX) is too high, and even considering the operating costs of using high-quality fuel, the payback period is 15 to 20 years, making it highly impractical. As an alternative, an exhaust gas cleaning system (EGCS) becomes a feasible option. Although it requires initial installation costs, and considering the operating costs of using high-grade fuel, its payback period is within 3 years, making it feasible.

[0007] Therefore, a technology is needed that can more effectively improve the waste gas flow structure of the waste gas purification system to achieve smooth waste gas discharge.

[0008] Patent Document 1: Korean Patent Publication No. 10-1895192 (Venturi Integrated Washing Device, September 4, 2018) Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a scrubber equipped with a flow guide shape, which can make the exhaust gas flow smoothly without stagnation or accumulation, and minimize the occurrence of cavitation without deviating to one side.

[0010] To achieve the above objectives, embodiments of the present invention provide a scrubber equipped with a flow-guiding shape, comprising: a scrubber body having an inlet formed on its front surface and an outlet formed at its upper end, thereby removing greenhouse gases from exhaust gas by seawater jetting, exhaust gas from a ship engine flowing in through the inlet and exhaust gas passing through the internal space exiting through the outlet; an exhaust gas guide section, which is attached to the rear end of the inlet, thereby forming an exhaust gas inflow space, and is composed of a rear plate and side plates, the rear plate being opposite to the inlet, thereby guiding the exhaust gas flowing in through the inlet downwards, the side plates being respectively attached to both sides of the rear plate; and a flow-guiding shape, which is formed at a certain distance from the lower end of the exhaust gas guide section and maintained at a certain height from the upper end of the bottom plate of the scrubber body, thereby uniformly diffusing the exhaust gas guided downwards by the exhaust gas guide section into the internal space, so that the exhaust gas exits through the outlet.

[0011] The flow guide shape can be composed of a first flow divider and a second flow divider. The first flow divider is formed symmetrically and obliquely, thereby diverting the exhaust gas from the side plate at the lower end of the exhaust gas guide and guiding it to the outer direction. The second flow divider is formed obliquely, thereby guiding the exhaust gas from the lower end of the exhaust gas guide to the outer direction of the rear plate.

[0012] Furthermore, the flow guide shape can be composed of a first flow divider and a second flow divider. The first flow divider is formed with an arc-shaped cross-section structure, thereby diverting the exhaust gas from the side plate at the lower end of the exhaust gas guide and guiding it to the outer direction. The second flow divider is formed with a streamline shape, thereby guiding the exhaust gas from the lower end of the exhaust gas guide to the outer direction of the rear plate.

[0013] Furthermore, a nozzle section for spraying seawater downwards can be formed inside the exhaust gas guide section.

[0014] Furthermore, one or more stages of tower packing can be formed between the outer side of the exhaust gas guide and the inner surface of the scrubber body.

[0015] The advantage of this invention is that by allowing the exhaust gas to flow smoothly without stagnation or accumulation, and without deviating to one side while minimizing cavitation, the exhaust gas can be smoothly discharged into the atmosphere. Attached Figure Description

[0016] Figure 1 A washer equipped with a flow-guiding shape is shown according to an embodiment of the present invention.

[0017] Figure 2 Show each Figure 1 The diagram shows an exploded view of the exhaust gas guide section and the guide shape of the scrubber equipped with the guide shape.

[0018] Figure 3 Show Figure 1 The front structure of the washer equipped with a flow guide shape is shown.

[0019] Figure 4 and Figure 5 Show each Figure 1 The flow analysis results of the washer equipped with the guide shape are shown.

[0020] Explanation of reference numerals in the attached figures

[0021] 110: Washer body; 111: Inlet / outlet

[0022] 112: Discharge port; 113: Base plate

[0023] 114: Injection nozzle; 120: Exhaust gas guide unit

[0024] 121: Back panel; 122: Side panel

[0025] 130: Guide shape; 131: First splitter plate

[0026] 132: Second splitter plate; 133: First splitter plate

[0027] 134: Second splitter plate. Detailed Implementation

[0028] Hereinafter, embodiments of the present invention having the above features will be described in further detail with reference to the accompanying drawings.

[0029] According to an embodiment of the present invention, a scrubber equipped with a flow-guiding shape includes: a scrubber body 110, wherein an inlet 111 is formed on its front surface and an outlet 112 is formed at its upper end, thereby removing greenhouse gases from exhaust gas by seawater jetting; exhaust gas from a ship engine flows in through the inlet 111 and exhaust gas passing through an internal space A is discharged through the outlet 112; and an exhaust gas guide 120, which is attached to the rear end of the inlet 111, thereby forming an exhaust gas inflow space B, and is composed of a rear plate 121 and a side plate 122, the rear plate 121 being connected to the inlet 111. Yes, thus the exhaust gas flowing in through the inlet 111 is guided downwards, and the side plates 122 are respectively attached to both sides of the rear plate 121; and the guide shape 130 is formed at a certain distance from the lower end of the exhaust gas guide section 120, and maintains a certain height from the upper end of the bottom plate 113 of the scrubber body 110, thereby evenly diffusing the exhaust gas guided downwards by the exhaust gas guide section 120 into the internal space A, so that the exhaust gas is discharged from the outlet 112. The focus of the scrubber is to minimize the accumulation or stagnation of exhaust gas inside the scrubber body 110.

[0030] The following describes in detail, with reference to the accompanying drawings, a washer equipped with a flow-guiding shape.

[0031] First, such as Figure 1 As shown, in the scrubber body 110, one or more inlets 111 are formed on the front surface, and an outlet 112 is formed at the upper end. Exhaust gas from the engines (not shown) of large ships such as liquefied natural gas carriers and oil tankers flows in from the inlets 111 and is discharged from the outlet 112 after passing through the internal space A. Thus, the exhaust gas flows from the inlets 111 to the outlet 112 to remove greenhouse gases from the exhaust gas by seawater jetting.

[0032] Next, see Figure 1 and Figure 2 The exhaust gas guide section 120 is attached to the rear end of the inlet 111, thereby forming an exhaust gas inflow space B, and is composed of a rear plate 121 and a side plate 122. The rear plate 121 is opposite to the inlet 111, thereby guiding the exhaust gas flowing in through the inlet 111 downward. The side plates 122 are attached to both sides of the rear plate 121 respectively.

[0033] The upper end of the rear plate 121 can be formed as a curved panel with a certain radius of curvature, and the lower end is formed as a flat plate, thereby guiding the exhaust gas flowing in horizontally downward.

[0034] Next, see Figure 1 and Figure 2The guide shape 130 is formed at a certain distance from the lower end of the exhaust gas guide section 120 and maintains a certain height from the upper end of the bottom plate 113 of the scrubber body 110, thereby uniformly diffusing the exhaust gas guided downward by the exhaust gas guide section 120 into the internal space A, so that the exhaust gas is discharged from the exhaust port 112, in order to minimize the exhaust gas from deflecting to one side or cavitation in the internal space A of the scrubber body 110, so that the exhaust gas from the spray nozzle 114 (see Figure 3 The sprayed seawater and other washing water are evenly diffused into the exhaust gas, thereby effectively washing the gas. The spray nozzle 114 is formed at the upper end of the internal space A of the main body 110 of the scrubber.

[0035] Specifically, such as Figure 2 As shown in (a) and (b), the flow guide shape 130 can be composed of a pair of first diverter plates 131 and second diverter plates 132. The pair of first diverter plates 131 are formed symmetrically and obliquely to divert exhaust gas from the side plate 122 at the lower end of the exhaust gas guide 120 to the outward direction, thereby guiding the exhaust gas to the internal space A. The second diverter plate 132 is formed obliquely, thereby guiding the exhaust gas from the lower end of the exhaust gas guide 120 to the outward direction of the rear plate 121 to the internal space A (see...). Figure 1 (b)

[0036] Or, such as Figure 2 As shown in (c), the flow guide shape 130 can be composed of a first flow divider 133 and a second flow divider 134. The first flow divider 133 is formed with an arc-shaped cross-section structure to divert the exhaust gas from the side plate 122 at the lower end of the exhaust gas guide section 120 to the outer direction, thereby guiding the exhaust gas to the internal space A. The second flow divider 134 is formed with a streamline shape, thereby guiding the exhaust gas from the lower end of the exhaust gas guide section 120 to the outer direction of the rear plate 121 to the internal space A.

[0037] Furthermore, a nozzle section (not shown) for downward spraying seawater can be formed inside the exhaust gas guide section 120, thereby removing sulfur oxides (SO₄) by guiding the exhaust gas downward. x It contains particulate components such as carbon soot for washing.

[0038] Furthermore, one or more stages of column packing can be formed between the outer side of the exhaust gas guide section 120 and the inner surface of the scrubber body 110. For example, column packing used to increase the contact area per unit volume can be formed in multiple stages, and column packing suitable for the process can be selected according to the contact area per unit area, the gas pressure drop, and the flooding velocity. Channeling can be prevented by forming a solution redistributor (not shown) between the column packings formed in multiple stages.

[0039] also, Figure 4 and Figure 5 Show each Figure 1 The flow analysis results of the washer equipped with the guide shape are shown. Figure 4 (a) shows the streamline of a scrubber equipped with a guide shape 130, and (b) shows the streamline of a scrubber without a guide shape 130. In (a), compared to (b), the exhaust gas can be smoothly discharged through the exhaust port 112 by allowing the exhaust gas to flow smoothly without stagnation or accumulation and without deflection to one side while minimizing cavitation.

[0040] also, Figure 5 (a) shows the velocity field of a scrubber equipped with a guide shape 130, and (b) shows the velocity field of a scrubber without a guide shape 130. Compared to (b), in (a), the exhaust gas flows relatively smoothly without stagnation or accumulation, and can thus be smoothly discharged through the exhaust port 112.

[0041] Therefore, with the above-mentioned structure of the scrubber equipped with the flow-guiding shape, the exhaust gas flows smoothly without stagnation or accumulation, and minimizes cavitation without deviating to one side, thus allowing it to be smoothly discharged into the atmosphere.

[0042] It should be understood that the embodiments and structures shown in the drawings in this specification are merely preferred embodiments of the present invention and do not represent all technical concepts of the present invention. Therefore, various equivalents and modifications may exist as alternatives when this application is filed.

Claims

1. A washer equipped with a flow-guiding shape, comprising: The main body of the scrubber has an inlet formed on its front surface and an outlet formed at its upper end, thereby removing greenhouse gases from the exhaust gas by seawater jetting. Exhaust gas from the ship's engine flows in through the inlet and exhaust gas passing through the internal space is discharged through the outlet. An exhaust gas guide section, which is attached to the rear end of the inlet to form an exhaust gas inflow space, is composed of a rear plate and side plates. The rear plate is opposite to the inlet, thereby guiding the exhaust gas flowing in through the inlet downwards. The side plates are respectively attached to both sides of the rear plate. The guide shape is formed at a certain distance from the lower end of the exhaust gas guide section and maintains a certain height from the upper end of the bottom plate of the scrubber body, thereby evenly diffusing the exhaust gas guided downward by the exhaust gas guide section into the internal space, so that the exhaust gas is discharged from the discharge port. The upper end of the rear plate is formed as a curved panel with a certain radius of curvature, and the lower end is formed as a flat plate. The flow guide shape is composed of a first flow divider and a second flow divider. The first flow divider is symmetrically and obliquely formed, thereby diverting and guiding the exhaust gas from the side plate at the lower end of the exhaust gas guide section to the outward direction. The second flow divider is obliquely formed, thereby guiding the exhaust gas from the lower end of the exhaust gas guide section to the outward direction of the rear plate. A nozzle section for spraying seawater downwards is formed inside the exhaust gas guide section. One or more stages of tower packing are formed between the outer side of the exhaust gas guide and the inner surface of the scrubber body.

2. The washer equipped with a flow-guiding shape according to claim 1, characterized in that: The flow guide shape is composed of a first flow divider and a second flow divider. The first flow divider is formed with an arc-shaped cross-section structure, thereby diverting the exhaust gas from the side plate at the lower end of the exhaust gas guide and guiding it to the outer direction. The second flow divider is formed with a streamline shape, thereby guiding the exhaust gas from the lower end of the exhaust gas guide to the outer direction of the rear plate.

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