Demisting device for decarburization of ship tail gas

Abstract

The utility model discloses a demisting device for decarburization of ship tail gas, and belongs to the technical field of ship tail gas treatment. A demisting device for ship tail gas decarburization comprises a first barrel and further comprises a baffle plate assembly arranged in the first barrel, a connecting barrel is arranged at the bottom of the first barrel, and a flue gas inlet pipe is fixedly arranged on the side wall of the connecting barrel; a second barrel is arranged at the top of the first barrel, and a wire mesh demister is fixedly arranged in the second barrel; according to the utility model, the flue gas discharge outlet pipeline of the ship tail gas decarburization absorption unit is communicated with the flue gas inlet pipe, fine liquid drops carried in the flue gas can be effectively removed after the flue gas passes through the baffle plate assembly and the wire mesh demister, and the collected liquid flows to the system decarburization agent circulating cabin through the discharge pipe at the bottom of the connecting cylinder, so that the purpose of demisting is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship exhaust treatment, in particular to a demisting device for decarbonizing ship exhaust. Background Art

[0002] In recent years, human activities have released large amounts of greenhouse gases into the environment, accelerating global warming. This increase in greenhouse gas concentrations has led to rising temperatures worldwide. Scientific observations have shown that the concentration of carbon dioxide in Earth's atmosphere has risen from 280 parts per million (ppm) before the Industrial Revolution to 387 ppm today. This threatening climate change has led to a series of existential crises for humanity, making global warming one of the most serious environmental issues facing humanity and garnering widespread international attention. The shipping industry has long been known for its environmental friendliness, but in recent years, the increasing number of vessels and their larger size have resulted in significant emissions of carbon dioxide and other greenhouse gases into the atmosphere.

[0003] In the field of marine exhaust decarbonization systems, there is a decarbonization absorption unit that utilizes a powerful centrifugal force field generated by high-speed rotation to achieve extremely intense gas-liquid contact. The liquid contacts the flue gas at extremely high relative speeds in a curved flow channel, creating conditions of high dispersion, high mixing, high turbulence, and rapid interface renewal. This significantly improves the efficiency of gas-liquid two-phase mass transfer, making it possible to replace traditional, massive towers with highly rotating centrifugal equipment. However, this also presents a new challenge: how to remove the fine droplets, commonly known as mist, entrained in the flue gas exiting the decarbonization absorption unit. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that it is inconvenient to remove fine droplets in the flue gas, and to propose a demisting device for decarbonizing ship exhaust gas.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A demisting device for decarbonizing ship exhaust gas comprises a first cylinder, and also includes: a baffle assembly arranged in the first cylinder, a connecting cylinder is provided at the bottom of the first cylinder, and a flue gas inlet pipe is fixedly provided on the side wall of the connecting cylinder; a second cylinder is provided on the top of the first cylinder, and a wire mesh demister is fixedly provided in the second cylinder.

[0007] In order to evenly distribute the smoke, preferably, a plurality of groups of special-shaped smoke baffles are fixedly provided in the connecting tube, the special-shaped smoke baffles are located at the outlet end of the smoke inlet pipe, and ear plates are fixedly provided on the side walls of the connecting tube.

[0008] In order to facilitate the detection of the pressure in the device and timely clean the baffle assembly and the wire mesh demister, further, a sensor interface is fixedly provided on the connecting tube, and a discharge pipe is fixedly provided on the bottom of the connecting tube.

[0009] In order to facilitate the discharge of the treated flue gas, preferably, a discharge cylinder is provided on the top of the second cylinder, a flue gas outlet is opened on the top of the discharge cylinder, and a detector interface is fixedly provided on the discharge cylinder.

[0010] Furthermore, an annular plate is fixedly provided on the inner wall of one end of the first cylinder close to the connecting cylinder, and the bottom of the baffle assembly abuts against the top of the annular plate.

[0011] Furthermore, an L-shaped pressure plate is provided in the second cylinder, and the two ends of the L-shaped pressure plate are respectively against the top of the baffle assembly and the bottom of the wire mesh demister. A rectangular pressure plate is provided in the discharge cylinder, and the bottom of the rectangular pressure plate is against the top of the wire mesh demister.

[0012] Compared with the prior art, the present invention provides a demisting device for decarbonizing ship exhaust gas, which has the following beneficial effects:

[0013] 1. This demisting device for ship exhaust decarbonization connects the flue gas outlet pipe of the ship exhaust decarbonization absorption unit with the flue gas inlet pipe. After passing through the baffle assembly and wire mesh demister, it can effectively remove the fine droplets entrained in the flue gas. The collected liquid flows through the discharge pipe at the bottom of the connecting tube to the system decarbonizer circulation tank, thereby achieving the purpose of demisting.

[0014] 2. The demisting device for ship exhaust decarbonization can make the flue gas distribution more uniform, stabilize the flue gas flow field, and effectively shorten the distance from the flue gas inlet to the baffle module, thereby reducing the overall height of the demisting device by fixing a special-shaped flue gas baffle in the connecting tube.

[0015] The parts not involved in this device are the same as the existing technology or can be implemented by using the existing technology. The utility model connects the flue gas discharge outlet pipeline of the ship's exhaust decarbonization absorption unit with the flue gas inlet pipe, and after passing through the baffle assembly and the wire mesh demister, it can effectively remove the fine droplets entrained in the flue gas. The collected liquid flows to the system decarbonizer circulation cabin through the discharge pipe at the bottom of the connecting tube, thereby achieving the purpose of demisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a demisting device for decarbonizing ship exhaust gas proposed in the present invention;

[0017] Figure 2 This is a cross-sectional view of a demisting device for decarbonizing ship exhaust gas proposed by the utility model;

[0018] Figure 3 This is a partial schematic diagram of a demisting device for decarbonizing ship exhaust gas proposed by the utility model;

[0019] Figure 4 The present invention is a flow chart of a demisting device for decarbonizing ship exhaust gas.

[0020] In the figure: 1. baffle assembly; 101. first cylinder; 2. wire mesh demister; 201. second cylinder; 3. sensor interface; 4. detector interface; 5. discharge pipe; 6. ear plate; 7. flue gas inlet pipe; 8. flue gas outlet; 801. discharge cylinder; 9. special-shaped flue gas baffle; 901. connecting cylinder; 10. annular plate; 11. L-shaped pressure plate; 12. rectangular pressure plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0023] Example:

[0024] Reference Figures 1-4A demisting device for decarbonizing ship exhaust gas comprises a first cylinder 101, and further comprises: a baffle assembly 1 is arranged in the first cylinder 101, a connecting cylinder 901 is arranged at the bottom of the first cylinder 101, and a flue gas inlet pipe 7 is fixedly arranged on the side wall of the connecting cylinder 901; a second cylinder 201 is arranged at the top of the first cylinder 101, and a wire mesh demister 2 is fixedly arranged in the second cylinder 201. The wire mesh demister 2 is mainly composed of a wire mesh block composed of a wire mesh and a wire mesh grid and a supporting device for fixing the wire mesh block. The wire mesh is a gas-liquid filter mesh made of various materials, and the gas-liquid filter mesh is composed of metal wire or non-metal wire. The non-metallic wire of the gas-liquid filter mesh is twisted from multiple strands of non-metallic fibers, and can also be a single strand of non-metallic wire. The wire mesh demister 2 can not only filter out larger liquid foam suspended in the airflow, but also filter out smaller and tiny liquid foam. During use, the flue gas outlet pipe of the ship's exhaust gas decarbonization absorption unit is connected to the flue gas inlet pipe 7, and the flue gas enters the connecting tube 901. After the flue gas is diverted by the special-shaped flue gas baffle 9, the distribution becomes more uniform. After passing through the baffle assembly 1 and the wire mesh demister 2, the fine droplets entrained in the flue gas can be effectively removed. These fine droplets are commonly known as mist. The collected liquid flows through the discharge pipe 5 at the bottom of the connecting tube 901 to the system decarbonizer circulation chamber, thereby achieving the purpose of demisting. Flanges are fixedly provided on the connecting tube 901, the first cylinder 101, the second cylinder 201 and the discharge tube 801. Then, the connecting tube 901, the first cylinder 101, the second cylinder 201 and the discharge tube 801 are connected from bottom to top with bolts, and a sealing gasket is provided between the two sets of flanges to improve the sealing effect of the connection and prevent leakage during use. Moreover, the connection with flanges and bolts makes assembly and disassembly easy, which can improve the efficiency of maintenance and cleaning.

[0025] Reference Figure 2 , a plurality of groups of special-shaped smoke baffles 9 are fixedly arranged in the connecting tube 901, and the special-shaped smoke baffles 9 are provided with two to eight groups, preferably two groups. The special-shaped smoke baffles 9 are located at the outlet end of the smoke inlet pipe 7, and ear plates 6 are fixedly provided on the side walls of the connecting tube 901. The ear plates 6 are used to facilitate the fixing of the connecting tube 901, thereby improving the stability during use. When in use, by fixing the special-shaped smoke baffles 9 in the connecting tube 901, the smoke distribution can be made more uniform, the smoke flow field can be stabilized, and the distance from the smoke inlet to the baffle module can be effectively shortened, thereby reducing the height of the defogger device as a whole.

[0026] Reference Figure 1 and Figure 2A sensor interface 3 is fixedly provided on the connecting tube 901, preferably a pressure sensor, and a discharge pipe 5 is fixedly provided at the bottom of the connecting tube 901. A solenoid valve is fixedly provided on the discharge pipe 5 to facilitate the collected droplets to flow to the system decarbonizer circulation chamber, thereby ensuring the stability of the decarbonizer solution composition of the decarbonization system. When in use, a pressure sensor is provided in the connecting tube 901. When the pressure sensor outputs a high-value alarm, the wire mesh demister 2 and the baffle assembly 1 can be disassembled, inspected, cleaned and maintained when the system is shut down, thereby improving the use effect.

[0027] Reference Figure 1-Figure 3 An exhaust cylinder 801 is provided at the top of the second cylinder 201, a flue gas outlet 8 is opened at the top of the exhaust cylinder 801, and a detector interface 4 is fixedly provided on the exhaust cylinder 801. A carbon dioxide detector is preferably installed at the detector interface 4 to detect the carbon dioxide content in the exhaust flue gas and improve the decarbonization treatment effect.

[0028] Reference Figure 2 and Figure 3 An annular plate 10 is fixedly mounted on the inner wall of one end of the first cylinder 101 near the connecting cylinder 901, abutting the bottom of the baffle assembly 1 against the top of the annular plate 10. The sidewalls of the baffle assembly 1 abut against the inner wall of the first cylinder 101, and a sealing gasket is provided between the bottom of the baffle assembly 1 and the top of the annular plate 10, which can improve the sealing effect, facilitate the assembly and disassembly of the baffle assembly 1, and improve maintenance efficiency.

[0029] Reference Figure 2 and Figure 3 An L-shaped pressure plate 11 is arranged in the second cylinder 201, and the two ends of the L-shaped pressure plate 11 are respectively against the top of the baffle assembly 1 and the bottom of the wire mesh demister 2. A rectangular pressure plate 12 is arranged in the discharge cylinder 801, and the bottom of the rectangular pressure plate 12 is against the top of the wire mesh demister 2. When in use, the rectangular pressure plate 12 and the L-shaped pressure plate 11 can improve the stability of the baffle assembly 1 and improve the use effect.

[0030] In the present utility model, the baffle assembly 1 has a good ability to capture droplets of larger particle size, while the wire mesh demister 2 plays a complementary role, which can capture small droplets of 10 microns or even less than 10 microns in size. The two complement each other and can almost completely and effectively remove the droplets entrained in the flue gas. The captured droplets flow to the system decarbonizer circulation chamber through the discharge pipe 5 of the device, ensuring the stability of the decarbonizer solution components of the decarbonization system. In addition, two special-shaped flue gas baffles 9 are provided at the outlet end of the flue gas inlet pipe 7 of the device body, and their optimal layout position can be simulated by simulation software, thereby shortening the height of the entire L-shaped demisting device and facilitating the layout and installation on the actual ship.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A demisting device for decarbonizing ship exhaust gas, comprising a first cylinder (101), characterized in that: Also includes: A baffle assembly (1) is provided in the first cylinder (101); a connecting cylinder (901) is provided at the bottom of the first cylinder (101); a smoke inlet pipe (7) is fixedly provided on the side wall of the connecting cylinder (901); A second cylinder (201) is provided on the top of the first cylinder (101), and a wire mesh demister (2) is fixedly provided inside the second cylinder (201).

2. A demisting device for decarbonizing ship exhaust gas according to claim 1, characterized in that: Multiple groups of special-shaped smoke baffles (9) are fixedly provided in the connecting tube (901), the special-shaped smoke baffles (9) are located at the gas outlet end of the smoke inlet pipe (7), and ear plates (6) are fixedly provided on the side walls of the connecting tube (901).

3. A demisting device for decarbonizing ship exhaust gas according to claim 2, characterized in that: A sensor interface (3) is fixedly provided on the connecting tube (901), and a discharge pipe (5) is fixedly provided on the bottom of the connecting tube (901).

4. A demisting device for decarbonizing ship exhaust gas according to claim 1, characterized in that: A discharge cylinder (801) is provided at the top of the second cylinder (201), a smoke outlet (8) is opened at the top of the discharge cylinder (801), and a detector interface (4) is fixedly provided on the discharge cylinder (801).

5. A demisting device for decarbonizing ship exhaust gas according to claim 4, characterized in that: An annular plate (10) is fixedly provided on the inner wall of one end of the first cylinder (101) close to the connecting cylinder (901), and the bottom of the baffle assembly (1) abuts against the top of the annular plate (10).

6. A demisting device for decarbonizing ship exhaust gas according to claim 5, characterized in that: An L-shaped pressure plate (11) is provided in the second cylinder (201), and two ends of the L-shaped pressure plate (11) respectively abut against the top of the baffle assembly (1) and the bottom of the wire mesh demister (2). A rectangular pressure plate (12) is provided in the discharge cylinder (801), and the bottom of the rectangular pressure plate (12) abuts against the top of the wire mesh demister (2).

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