Device for removing black carbon from ship tail gas

Abstract

The utility model discloses a device for removing black carbon from ship tail gas, which is positioned on a ship exhaust pipeline needing decarburization treatment and in front of a carbon dioxide absorption unit. The device mainly comprises a dust removal sprayer, a spraying pump, a residue pump, a supply pump, a black carbon absorption device and the like. Ship tail gas needing to be treated enters the dust removal spray thrower through the flue gas inlet and makes full contact with water mist sprayed from top to bottom, and fine fog drops carrying black carbon fall into a water storage cavity in the bottom of the dust removal spray thrower after being buffered by the porous partition plate. After running for a period of time, turbid liquid deposited at the bottom is lighted to a black carbon absorption device through a residue pump and is uniformly sprayed on an activated carbon adsorption layer, black carbon is firmly adsorbed by activated carbon, and clear water flows to a water storage cavity at the bottom and is lighted to a water storage cavity of a dust removal sprayer through a supply pump.

Description

Technical Field

[0001] The utility model relates to a device for removing black carbon from ship exhaust gas, belonging to the technical field of shipborne carbon capture. Background Art

[0002] As the international community pays more attention to issues such as climate change and global warming, the International Maritime Organization attaches great importance to shipping decarbonization and emission reduction, has carried out a series of work to control shipping carbon emissions, and has issued a series of documents on shipping greenhouse gas emission reduction. At present, the application of carbon capture and storage in the fields of thermal power generation and coal chemical industry in China has made considerable progress. With the continuous maturity of onshore application technology, domestic carbon capture research in the shipping industry has also been carried out in full swing. At present, the decarbonization of the shipping industry mainly uses organic amine solution (mainly MEA solution) to chemically absorb CO2 gas in ship exhaust. However, since there is a large amount of fine black carbon in the ship exhaust, the black carbon in the MEA solution accumulates more and more after a long operation time, making the MEA solution black, reducing the utilization rate, and affecting the efficiency of the MEA solution in absorbing carbon dioxide. Although a filter is added before the carbon dioxide absorption unit, it still cannot completely filter out the fine black carbon. If a smaller filter screen is used, the back pressure of the entire system will increase. Based on this, this device for removing black carbon from ship exhaust is added in the pretreatment stage of ship exhaust. Utility Model Content

[0003] The technical problem to be solved by the device of the utility model is to provide a device for removing black carbon from ship exhaust.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model device is:

[0005] The utility model provides a device for removing black carbon from ship exhaust, which is located before a carbon dioxide absorption unit. The device is mainly composed of a dust removal sprayer, a spray pump, a residue pump, a black carbon absorption device, and a supply pump.

[0006] Furthermore, the dust removal sprayer body is provided with a smoke inlet and a smoke outlet.

[0007] Furthermore, the dust removal sprinkler body is provided with an inclined plate, which can make the sprayed water flow to the right side, and fall to the bottom after being buffered by the porous partition.

[0008] A vertical hole-shaped partition with water holes is set at the bottom of the dust removal sprinkler to play a buffering role. The vertical hole-shaped partition divides the interior into two left and right cavities, which are interconnected through the water holes. The water in the left chamber is relatively clean.

[0009] Furthermore, the dust removal sprayer body is provided with a vertical hole-shaped partition, which divides the water storage chamber at the bottom of the dust removal sprayer into two left and right inner chambers, which are interconnected through the water flow holes, and the water in the left chamber is relatively clean.

[0010] Furthermore, the black carbon absorption device body is provided with an activated carbon adsorption layer, which can absorb black carbon in turbid liquid, and the filtered water is stored in the bottom chamber.

[0011] The exhaust gas from the ship to be treated enters the dust removal sprayer (1) through the flue gas inlet, and is fully contacted with the water mist sprayed from top to bottom. The fine mist droplets carry black carbon and are buffered by the porous partition plate before falling into the water storage chamber at the bottom of the dust removal sprayer. After running for a period of time, the turbid liquid deposited at the bottom is transferred to the black carbon absorption device through the residue pump and evenly sprayed on the activated carbon adsorption layer. The black carbon is firmly adsorbed by the activated carbon, and the clear water flows to the water storage chamber at the bottom. When the liquid level reaches a certain height, the supply pump is started, and the water is then transferred to the water storage chamber of the dust removal sprayer through the supply pump, thereby achieving the purpose of water recycling.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device of the utility model can effectively remove more than 98% of the black carbon content in the ship exhaust gas. Compared with the previous method of removing black carbon with a filter, it effectively reduces the operating back pressure of the system, increases the service life of the MEA solution, and reduces the operating cost of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation of the device of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1 It is the accompanying drawing of the utility model device.

[0016] Figure 2 This is a flow chart of the ship's exhaust gas passing through the device.

[0017] In the attached figure:

[0018] 1. Dust removal sprayer, 2. Spray pump, 3. Residue pump, 4. Black carbon absorption device, 5. Supply pump, 6. Flue gas inlet, 7. Flue gas outlet, 8. Inclined plate, 9. Perforated partition, 10. Vertical perforated partition, 11. Activated carbon adsorption layer. DETAILED DESCRIPTION

[0019] Example 1

[0020] In order to make the purpose, technical scheme and advantages of the implementation of the utility model clearer, the technical scheme in the embodiment of the utility model will be described in more detail below in conjunction with the drawings in the embodiment of the utility model. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the utility model, not all of the embodiments.

[0021] See attached Figure 1 This embodiment provides a device for removing black carbon from ship exhaust gas, which is located on the exhaust pipeline of the ship that needs to be decarbonized and before the carbon dioxide absorption unit. It mainly consists of a dust removal sprayer (1), a spray pump (2), a residue pump (3), a black carbon absorption device (4), a supply pump (5), etc.

[0022] 见附图2，介绍了船舶尾气从船舶主辅机出来，经除尘喷淋器的烟气进口(6)进入，再经由烟气出口(7)出去，最后进入到CO2吸收单元。

[0023] The dust removal sprayer body is provided with a smoke inlet (6) and a smoke outlet (7).

[0024] The dust removal sprayer body is provided with an inclined plate (8) to allow the sprayed water to flow to the right side and fall to the bottom after being buffered by a porous partition (9). A vertical porous partition (10) is also provided in the middle of the bottom with a water flow hole to play a buffering role, dividing the bottom water storage chamber of the dust removal sprayer (1) into two left and right inner chambers, which are interconnected through the water flow holes, and the water in the left chamber is relatively clean. The spray pump (2) can extract the water on the relatively clean side and circulate it to spray and remove black carbon.

[0025] After running for a period of time, the bottom liquid becomes turbid due to a large amount of black carbon entrained in the water. It is then transferred to the black carbon absorption device (4) through the residue pump (3) and evenly sprayed on the activated carbon adsorption layer (11). The black carbon is firmly adsorbed by the activated carbon, and the clear water flows to the water storage chamber at the bottom. When the liquid level reaches a certain height, the replenishment pump (5) is started, and the water is then transferred to the water storage chamber of the dust removal sprayer through the replenishment pump (5), thereby achieving the purpose of recycling water resources. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A device for removing black carbon from ship exhaust, characterized in that: The device is located on the exhaust pipeline of a ship that needs to be decarbonized and before a carbon dioxide absorption unit, and is composed of a dust removal sprayer (1), a spray pump (2), a residue pump (3), a black carbon absorption device (4), and a supply pump (5).

2. The device for removing black carbon from ship exhaust according to claim 1, characterized in that: The dust removal sprayer (1) has a smoke inlet (6) and a smoke outlet (7).

3. The device for removing black carbon from ship exhaust according to claim 1, characterized in that: An inclined plate (8) is arranged inside the dust removal sprayer (1) so that the sprayed water can flow to the right side and fall to the bottom after being buffered by the porous partition plate (9).

4. The device for removing black carbon from ship exhaust according to claim 1, characterized in that: A vertical hole-shaped partition (10) with a water flow hole is arranged at the bottom of the dust removal sprayer (1) to play a buffering role. The vertical hole-shaped partition (10) divides the interior into two left and right inner cavities, which are interconnected through the water flow hole. The water in the left chamber is relatively clean.

5. The device for removing black carbon from ship exhaust according to claim 1, characterized in that: The bottom of the dust removal sprayer (1) is provided with a residue discharge port, and the turbid liquid is sprayed to the black carbon absorption device (4) via a residue pump (3).

6. The device for removing black carbon from ship exhaust according to claim 1, characterized in that: An activated carbon adsorption layer (11) is arranged inside the black carbon absorption device (4) and can absorb black carbon in turbid liquid, and the filtered water is stored in the bottom chamber.

7. The device for removing black carbon from ship exhaust according to claim 1, characterized in that: When the water stored at the bottom of the black carbon absorption device (4) reaches a certain liquid level, the supply pump (5) is started to transport the water to the bottom of the dust removal sprayer (1), thereby achieving the purpose of water recycling.

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