Marine carbon capture absorption tower and ship

Abstract

The carbon capture absorption tower comprises a first tower body and a second tower body, the first tower body and the second tower body are of the same structure, a tail gas inlet and an absorbent outlet are formed in the bottom of the first tower body, an absorbent inlet is formed in the upper portion of the second tower body, and a tail gas outlet is formed in the top of the second tower body. A tail gas outlet in the top of the first tower body is communicated with a tail gas inlet in the bottom of the second tower body. The absorbent outlet of the first tower body is communicated with the absorbent inlet of the second tower body through a pipeline. And an inter-tower pump is arranged on a pipeline for communicating the absorbent outlet of the first tower body with the absorbent inlet of the second tower body. The two absorption towers are connected in series, and tail gas passing through the first tower body is discharged from the top and then enters the bottom end of the second tower body for secondary absorption, so that the contact area of the tail gas, filler and an absorbent is ensured, the overall height of the carbon capture system is reduced, and the filler height of a single tower is greatly reduced; the absorption tower is simple in internal structure, convenient to manufacture and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ship, concretely relates to a marine carbon capture absorption tower and ship. BACKGROUND

[0002] With the rapid development of global economy, the increasing consumption rate of fossil fuels leads to the rapid rise of carbon dioxide concentration in the atmosphere. Global warming caused by too high carbon dioxide concentration in the atmosphere will put the earth's organisms at risk, so controlling carbon emissions has become a global problem.

[0003] The current commonly used ship exhaust gas carbon emission reduction method is divided into: using low-carbon fuel, new energy fuel instead of fossil fuel, saving energy, ship exhaust gas carbon emission reduction. Among them, the ship exhaust gas carbon emission reduction usually uses a marine carbon capture system, which uses an organic amine solution to absorb CO2 in the engine exhaust, and then decomposes pure CO2 for storage and use. In the process of absorbing CO2, a special structure absorption tower is needed, and the tower height directly affects the absorption efficiency and the tower diameter related to the allowable absorption exhaust flow, which are important parameters for design. The existing marine carbon capture system design adopts a high tower design to meet the sufficient carbon capture efficiency; the internal structure is mostly a double-layer filler design, each layer is composed of filler support, filler, filler compression grid and liquid distributor. Shanghai Huarun Dadong Shipping Engineering Co., Ltd. has tested and installed a marine carbon capture system on a 14000TEU large container ship, which has the characteristics of high carbon capture absorption efficiency and high CO2 purity. However, the above-mentioned carbon capture system is still only suitable for high-power ship equipment, and for small-power ships, the above-mentioned equipment has large power and serious energy consumption problems.

[0004] The utility model patent with application number "CN202322313186.3" discloses a vertical multi-layer carbon dioxide capture device. The device can switch between mobile and fixed states through the switching assembly, meeting the emission reduction purpose of small and medium-sized enterprises saving money to do big things. However, the absorption tower of the vertical multi-layer carbon dioxide capture device is too high, and it is not easy to install a high tower on a small-power ship, so the tower height needs to be reduced.

[0005] The marine carbon capture system on the market usually uses carbon capture technology for exhaust gas emission of land-based thermal power plants, which has the disadvantages of large space occupation, high difficulty in loading on the ship and low absorption efficiency. The high-rise carbon capture absorption tower has a high center of gravity and is difficult to fix, and it is not easy to pass through when the ship passes through a bridge. The existing solutions are suitable for ships with large displacement and high engine power, and are not suitable for small displacement and low engine power ships, such as small displacement and low engine power ships operating in inland rivers. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of absorption tower equipment suitable for low-power ship type, it is easy to install, and the land area is small, solve the vacancy of low-power carbon capture system absorption tower in present ship industry.

[0007] The utility model discloses a kind of marine carbon capture absorption towers, comprising:

[0008] The first tower body and the second tower body adopt the same structure, are provided with a tail gas inlet and an absorbent outlet at the bottom, are provided with an absorbent inlet at the upper part, and are provided with a tail gas outlet at the top.

[0009] The tail gas outlet at the top of the first tower body is communicated with the tail gas inlet at the bottom of the second tower body through a pipeline.

[0010] The absorbent outlet of the first tower body is communicated with the absorbent inlet of the second tower body through a pipeline.

[0011] A tower inter-pump is arranged on the pipeline, which is communicated with the absorbent outlet of the first tower body and the absorbent inlet of the second tower body.

[0012] Preferably, the absorbent is sprayed into the first tower body and the second tower body by a spray head.

[0013] Preferably, the packing section in the first tower body and the second tower body comprises a liquid level switch, a packing grid plate, packing and packing support.

[0014] Preferably, the height of the packing in the first tower body and the second tower body is at least 70% of the absorption rate index of the carbon capture system.

[0015] Preferably, a tower inter-heat exchanger is further arranged on the pipeline, which is communicated with the absorbent outlet of the first tower body and the absorbent inlet of the second tower body.

[0016] Preferably, a liquid level sensor, a temperature sensor and a pressure sensor are arranged in the first tower body and the second tower body.

[0017] Preferably, the tail gas inlet of the first tower body is inclined downward.

[0018] Preferably, a wire mesh demister is arranged between the absorbent inlet and the tail gas outlet of the first tower body and the second tower body.

[0019] The utility model not only provides a kind of marine carbon capture absorption tower, but also further provides a ship provided with the above-mentioned marine carbon capture absorption tower.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The marine carbon capture absorption tower and the ship provided by the utility model adopt two absorption towers in series connection design, tail gas is discharged from the top of the first tower body and then enters the bottom end of the second tower body for secondary absorption, the contact area of the tail gas with the packing and the absorbent is ensured, and the height of the carbon capture system as a whole is reduced.

[0022] The absorption tower internal mechanism provided by the utility model is simpler, the manufacturing difficulty is low, the double absorption tower series connection design is adopted, the system height is lower, and the utility model is more suitable for small ships. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a carbon capture system absorption tower connection schematic diagram in the utility model embodiment;

[0024] Figure 2 It is a single absorption tower external structure diagram in the utility model embodiment;

[0025] Figure 3 It is a single absorption tower internal structure diagram in the utility model embodiment;

[0026] Figure 4 It is a carbon capture absorption tower arrangement schematic diagram in the carbon capture system in the utility model embodiment.

[0027] In the drawing, 1 is a first tower body, 2 is a second tower body, 3 is a tail gas inlet, 4 is an absorbent outlet, 5 is an absorbent inlet, 6 is an inter-tower pump, 7 is a tail gas outlet, 8 is a liquid level switch, 9 is a packing grid plate, 10 is packing, 11 is packing support, 12 is an inter-tower heat exchanger, 13 is a liquid level sensor, 14 is a wire mesh demister, and 15 is a spray head. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings and not all structures.

[0029] As Figures 1 to 3 Indicated, the technical scheme of the utility model provides a marine carbon capture absorption tower, comprising:

[0030] The first tower body 1 and the second tower body 2 adopt the same structure, the bottom of the first tower body 1 and the second tower body 2 is provided with a tail gas inlet 3 and an absorbent outlet 4, the upper part is provided with an absorbent inlet 5, and the top is provided with a tail gas outlet 6;

[0031] The tail gas outlet 6 at the top of the first tower body 1 is communicated with the tail gas inlet 3 at the bottom of the second tower body 2 through a pipeline;

[0032] The absorbent outlet 4 of the first tower body 1 is communicated with the absorbent inlet 5 of the second tower body 2 through a pipeline;

[0033] A tower inter-pump 7 is arranged on the pipeline through which the absorbent outlet 4 of the first tower body 1 is communicated with the absorbent inlet 5 of the second tower body 2.

[0034] As shown in the drawings, Figure 3 in an embodiment of the utility model, the spray head 15 is used to spray the absorbent into the first tower body 1 and the second tower body 2.

[0035] As shown in the drawings, Figure 3 in an embodiment of the utility model, the filler section in the first tower body 1 and the second tower body 2 includes a liquid level switch 8, a filler grid plate 9, a filler 10 and a filler support 11.

[0036] in an embodiment of the utility model, the height of the filler inside the first tower body 1 and the second tower body 2 is at least 70% of the absorption rate index of the carbon capture system.

[0037] As shown in the drawings, Figure 2 in an embodiment of the utility model, the pipeline through which the absorbent outlet 4 of the first tower body 1 is communicated with the absorbent inlet 5 of the second tower body 2 is further provided with a tower inter-heat exchanger 12.

[0038] As shown in the drawings, Figure 2 in an embodiment of the utility model, the first tower body 1 and the second tower body 2 are internally provided with a liquid level sensor 13, a temperature sensor and a pressure sensor.

[0039] As shown in the drawings, Figure 3 in an embodiment of the utility model, the tail gas inlet 3 of the first tower body 1 is inclined downward.

[0040] As shown in the drawings, Figure 3 in an embodiment of the utility model, a wire mesh demister 14 is arranged between the absorbent inlet 5 and the tail gas outlet 6 of the first tower body 1 and the second tower body 2.

[0041] The following will be further described by an example, and in the embodiment, the absorption tower adopts the structure as shown in the drawings: Figures 1 to 3

[0042] ​The absorbent is sprayed from the absorbent inlet 5 to the absorbent outlet 4 below the first tower body 1, is pumped out through the inter-tower pump 7, passes through the heat exchanger 12, and enters the absorbent inlet 5 of the second tower body 2; the tail gas enters the first tower body from the tail gas inlet 3, flows out from the tail gas outlet 6 at the top end, passes through the pipeline, and flows into the tail gas inlet 3 of the second tower body 2, and then flows out from the tail gas outlet 6 of the second tower body 2.

[0043] As shown in the following Figure 1 The carbon capture system absorption tower part is designed in series connection of two absorption towers, the tail gas passing through the first absorption tower is discharged from the top and then enters the bottom end of the second absorption tower for secondary absorption, and the total height of the packing in the two absorption towers satisfies the system 70% absorption rate index. The absorbent sprayed in the first absorption tower is collected at the bottom end, is cooled and heat-exchanged to maintain the optimal absorption temperature, and is then sprayed in the second absorption tower for secondary absorption. Compared with the existing carbon capture technology, the contact area of the tail gas with the packing and the absorbent is ensured, and the overall height of the carbon capture system is also reduced. Meanwhile, liquid level sensors 12, temperature sensors, pressure sensors and the like are arranged in the two absorption towers to ensure that the absorption tower can be stably operated. Figure 3 As shown in the following

[0044] As shown in the following Figure 4 In the technical scheme of the utility model, besides providing a marine carbon capture absorption tower, a ship provided with the marine carbon capture absorption tower is further provided, Figure 4 In the technical scheme of the utility model, besides providing a marine carbon capture absorption tower, a ship provided with the marine carbon capture absorption tower is further provided,

[0045] The above is the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A marine carbon capture absorption column characterized by: The carbon capture absorption tower comprises: a first tower body (1) and a second tower body (2), the first tower body (1) and the second tower body (2) adopt the same structure, the bottom is provided with a tail gas inlet (3) and an absorbent outlet (4), the upper part is provided with an absorbent inlet (5), and the top is provided with a tail gas outlet (6); the tail gas outlet (6) at the top of the first tower body (1) is communicated with the tail gas inlet (3) at the bottom of the second tower body (2) through a pipeline; the absorbent outlet (4) of the first tower body (1) is communicated with the absorbent inlet (5) of the second tower body (2) through a pipeline; an inter-tower pump (7) is arranged on the pipeline through which the absorbent outlet (4) of the first tower body (1) is communicated with the absorbent inlet (5) of the second tower body (2).

2. A marine carbon capture absorption column according to claim 1, characterised in that: The absorbent is sprayed into the first tower body (1) and the second tower body (2) by a spray head (15).

3. A marine carbon capture absorption column according to claim 2, characterised in that: The packing section in the first tower body (1) and the second tower body (2) comprises a liquid level switch (8), a packing grid plate (9), packing (10) and packing support (11).

4. A marine carbon capture absorption column as claimed in claim 3 characterised in that: The packing height in the first tower body (1) and the second tower body (2) is at least 70% of the absorption rate index of the carbon capture system.

5. A marine carbon capture absorption column as claimed in claim 4, characterised in that: An inter-tower heat exchanger (12) is further arranged on the pipeline through which the absorbent outlet (4) of the first tower body (1) is communicated with the absorbent inlet (5) of the second tower body (2).

6. A marine carbon capture absorption column according to claim 5, characterised in that: A liquid level sensor (13), a temperature sensor and a pressure sensor are arranged inside the first tower body (1) and the second tower body (2).

7. A marine carbon capture absorption column as claimed in claim 6 characterised in that: The tail gas inlet (3) of the first tower body (1) is inclined downward.

8. A marine carbon capture absorption column according to claim 7, characterised in that: A wire mesh demister (14) is arranged between the absorbent inlet (5) and the tail gas outlet (6) of the first tower body (1) and the second tower body (2).

9. A marine vessel provided with a carbon capture system, characterized in that: The carbon capture system is provided with the carbon capture absorption tower according to any one of claims 1-8.

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